{"title":"Thermal Mass Flow Meters","description":"\u003cp\u003eThermal mass flow meters measure the mass flow rate of gases by monitoring how much heat is carried away from a heated sensor by the moving gas stream. They are widely used in both industrial settings—such as process control, emissions monitoring, and natural gas measurement—and in laboratory environments where precise gas delivery and monitoring are needed. Thermal mass meters are available in two main configurations: inline, where the sensor is built into the flow body for high accuracy in dedicated lines, and insertion, where a probe is inserted into larger ducts or pipes to measure flow at a representative point. Because they directly measure mass flow without the need for pressure or temperature compensation, thermal mass flow meters are convenient and reliable, though their performance can be influenced by gas composition and cleanliness.\u003c\/p\u003e","products":[{"product_id":"thermal-mass-flow-meter-controller","title":"Thermal Mass Flow Meter\/Controller \u003cbr\u003e for Gas Flow \u003cbr\u003e1\" to 2\"","description":"\u003cp\u003eOur thermal Mass Flow Meter or Controller is capable of providing direct measurement of mass flow, as opposed to most other methods that measure volumetric flow \u0026amp; require separate measurements for temperature \u0026amp; pressure in order to calculate density \u0026amp;, ultimately, the mass flow.\u003c\/p\u003e\n\u003cp\u003eWe also sell gas Mass flow Controllers built to measure air \u0026amp; gas. These flow meters shipping from stock (usually within 48hrs) \u0026amp; are configured for you.\u003c\/p\u003e\n\u003cp\u003eOur EASY to use gas Mass Flow Controllers are in stock at prices that beat our competition.\u003c\/p\u003e\n\u003c!--split--\u003e\n\u003ch5\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h5\u003e\n\u003ch3\u003eThermal Mass Flow Meter\/Controller Specifications\u003c\/h3\u003e\n\u003cdiv class=\"product-bullet-list\"\u003e\n\u003cul\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eChoose Material 316 SS, 6061 T6 Aluminum or Nylon 6\/6\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eVery low pressure drop for Natural Gas Flow Measurement into boilers.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\n\u003cspan style=\"font-weight: 400;\"\u003eChoose Air Flow ranges:\u003c\/span\u003e\n\u003cul\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eFor 1\":  0- 10, 15, and 0-20 SCFM. \u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eFor 2\":  0- 40, 50, 60, 70, 80 SCFM.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eCustom flows available, just note what you need.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eAccuracy: +\/- 1% of reading plus +\/-0.5% of full scale\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eRepeatability of +\/- 0.2% of full scale\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003e1” MNPT Pipe size\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eOLED Display\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eMeasures any inert gas and any non-condensing clean gas\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eFlammable gases: methane, propane, digester gas, natural gas\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003e100:1 turndown\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\n\u003cspan style=\"font-weight: 400;\"\u003eTemperature: \u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e    \u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e    \u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e    \u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e    \u003c\/span\u003e\n\u003cul\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eGas: -40°F (-40°C) to 350°F (200°C)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\n\u003cspan style=\"font-weight: 400;\"\u003eAmbient: -40° F to 120° F (-40° C to 50° C)\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e   \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\n\u003cspan style=\"font-weight: 400;\"\u003e\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003eSS \u0026amp; Aluminum Max Pressure 25 PSIG  \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\n\u003cspan style=\"font-weight: 400;\"\u003eNylon 6\/6 Max Pressure 25 PSIG  \u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e    \u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e    \u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eAdjustable Response time from 0.1 to 6 seconds to achieve 63% of final value\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003ePower Requirement: 18 to 30 VDC (regulated), 125 mA maximum;   \u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eWetted Materials: Nylon 6\/6, 6061T6 Aluminum, \u0026amp; 316 stainless-steel\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eOutput signals: Modbus RTU, USB-RS-232, 4–20 mA , 0–5 VDC, and User definable pulse output or frequency for totalized or flow rate indication\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eDigital communications solutions include: Modbus RTU, USB, \u0026amp; Bluetooth\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eIP66 Enclosure\u003cbr\u003e\u003cbr\u003e\u003ca title='1\"Tactical Flow Meter Brochure' href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/1-InchMFM-Revh.pdf?281406721728263953\" target=\"_blank\"\u003eDownload Brochure\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch5\u003e\u003cstrong\u003eInstructions\u003c\/strong\u003e\u003c\/h5\u003e\n\u003ch5\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp style=\"text-align: left;\"\u003eThe Tactical Flow Meter boasts a power fail tolerant datalog storage system that is a significant improvement over conventional \"SD Card\" file storage\/file management systems.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003eWhile both our datalog storage system and a conventional \"SD Card\" storage systems utilize flash storage technology our storage system concatenates each event or data at the end of the file using a simple pointer system where the pointers stored in EEPROM and the data is stored sequentially after the last event.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003eIf the power goes out in the middle of a storage event in a conventional \"SD Card\" system and the entire file can be lost.  If a power outage occurs during the middle of writing an event in our storage system the worst case is corruption of a single event at most.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003eAgain, SD Card technology can lose an entire file while the Tactical Flow Meter datalog storage system would only lose a single event.\u003c\/p\u003e\n\u003ch5\u003e\u003cstrong\u003eVideos\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp\u003eThe video below shows how the Tactical Flow Meter works and what advantages it has over conventional Thermal Mass Flowmeters.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003cdiv data-id=\"oyFpEr75fb4\" class=\"youtube-lite\"\u003e\n\u003cdiv class=\"youtube-lite__thumbnail\"\u003e\n\u003cimg loading=\"lazy\" alt=\"Video Thumbnail\" src=\"https:\/\/img.youtube.com\/vi\/oyFpEr75fb4\/hqdefault.jpg\"\u003e \u003cbutton class=\"youtube-lite__play\"\u003e▶\u003c\/button\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tactical Flow Meter","offers":[{"title":"1\" Mass Flow Meter \/ 316-Stainless Steel","offer_id":36353689033,"sku":"TFM1-SS-10","price":3100.0,"currency_code":"USD","in_stock":true},{"title":"1\" Mass Flow Meter \/ 6061 T6 Aluminum","offer_id":36354315145,"sku":"TFM1-AL-10","price":2900.0,"currency_code":"USD","in_stock":true},{"title":"1\" Mass Flow Meter \/ Nylon 6\/6","offer_id":36354315529,"sku":"TFM1-NY-10","price":2800.0,"currency_code":"USD","in_stock":true},{"title":"1\" Mass Flow Controller \/ 316-Stainless Steel","offer_id":46314358603945,"sku":null,"price":4195.0,"currency_code":"USD","in_stock":true},{"title":"1\" Mass Flow Controller \/ 6061 T6 Aluminum","offer_id":46314358636713,"sku":null,"price":4095.0,"currency_code":"USD","in_stock":true},{"title":"1\" Mass Flow Controller \/ Nylon 6\/6","offer_id":46314358669481,"sku":null,"price":3995.0,"currency_code":"USD","in_stock":true},{"title":"2\" Mass Flow Meter \/ 316-Stainless Steel","offer_id":46154427498665,"sku":null,"price":3300.0,"currency_code":"USD","in_stock":true},{"title":"2\" Mass Flow Meter \/ 6061 T6 Aluminum","offer_id":46154427662505,"sku":null,"price":3000.0,"currency_code":"USD","in_stock":true},{"title":"2\" Mass Flow Meter \/ Nylon 6\/6","offer_id":46154427826345,"sku":null,"price":2900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/products\/1_inch_Stainless_Mass_FLow_MeterWithDisplay.png?v=1571610970"},{"product_id":"low-flow-tactical-flow-meter-battery-powered-for-2-years","title":"15 SLPM to 100 SLPM Low Flow Tactical Flow Meter, Battery Powered for 2 years","description":"\u003ch2\u003e\u003cstrong\u003eMASS FLOW METER 0-15 and 100 SLPM SIZE RANGES\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cb\u003eSpecifications\u003c\/b\u003e\n\u003c\/h2\u003e\n\u003ch3 style=\"float: left;\"\u003e\u003cb\u003e\u003cimg style=\"float: left;\" src=\"\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/LCD_MassFlowMeter_compact.png?v=1527362451\" alt=\"\"\u003eFeatures LARGE LCD display, shows the Flow Rate, Total Flow, Temperature, Flow Units, Total Units, Temperature Units, and the gas number is shown along with battery charge indicator.\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eThe battery will typically last more than 2 years under normal use (Not included with meter). If the user needs an analog output or ModBus RTU then a power supply of 12-24 VDC with a capability of 50 mA must be used to power the loops. Battery power switch on top of unit.\u003c\/b\u003e\u003c\/p\u003e\n\u003cul style=\"font-weight: 400;\"\u003e\n\u003cli\u003eFlow Body Material 316 SS\u003c\/li\u003e\n\u003cli\u003eSelect 15 SLPM or 100 SLPM relative to Nitrogen Other ranges available.\u003c\/li\u003e\n\u003cli\u003eAccuracy: +\/- 1.5% of reading + 0.5% FS\u003c\/li\u003e\n\u003cli\u003eRepeatability of +\/- 0.5% of reading\u003c\/li\u003e\n\u003cli\u003e1\/4\", 3\/8\"  and 1\/2\" Male NPT\u003c\/li\u003e\n\u003cli\u003eLCD Display\u003c\/li\u003e\n\u003cli\u003eMeasures any inert gas and any non-condensing clean gas.\u003c\/li\u003e\n\u003cli\u003eFlammable gases: methane, propane, digester gas, natural gas\u003c\/li\u003e\n\u003cli\u003e100:1 turndown\u003c\/li\u003e\n\u003cli\u003eTemperature:                \u003c\/li\u003e\n\u003cul style=\"font-weight: 400;\"\u003e\n\u003cli\u003eGas: 14°F (-10°C) to 131°F (55°C)\u003c\/li\u003e\n\u003cli\u003eAmbient: 14°F (-10°C) to 149°F (65°C)              \u003c\/li\u003e\n\u003cul style=\"font-weight: 400;\"\u003e\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul style=\"font-weight: 400;\"\u003e\n\u003cul style=\"font-weight: 400;\"\u003e\n\u003cul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cli\u003eBattery Life is Typically 2 years with D Cell 3.6 V 1900 mAh Lithium Ion Battery Also runs on 12-24 VDC WITHOUT the need for a battery. Battery not included because of shipping restrictions.\u003c\/li\u003e\n\u003cli\u003eSUPER FAST Response time 250 milliseconds.\u003c\/li\u003e\n\u003cli\u003ePower Requirement: 12 to 24 VDC (regulated), 50 mA maximum;   \u003c\/li\u003e\n\u003cli\u003eWetted Materials may include: 316 stainless-steel, Silicon Nitride, Pyrex Glass, Alumina ceramics, gold, aluminum, nickel, FR-4 and Pb-free solder may come in contact with gas.\u003c\/li\u003e\n\u003cli\u003eOutput signals: Modbus RTU, 4–20 mA , 0–5 VDC, and User definable pulse  output (3VDC) for flow rate indication. Totalizer is non-resettable suitable for billing applications. \u003c\/li\u003e\n\u003cli\u003eDigital communications: Modbus RTU \u003c\/li\u003e\n\u003cli\u003eProof Pressure 1.2 MPa, 175 PSIG.\u003c\/li\u003e\n\u003cli\u003eNEMA 1 Enclosure for Lab and indoor use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca title='1\"Tactical Flow Meter Brochure' href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/1-InchMFMR829g.pdf?4914467433057142029\" target=\"_blank\"\u003e\u003cimg alt=\"\" src=\"\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/products\/Dimensions_grande.png?v=1527359353\"\u003e\u003c\/a\u003eBattery not included, We are not authorized to ship Lithium Batteries for safety reasons, Order battery with these specs. EEMB 3.6 V D Size Lithium Battery ER34615 19000 mAh Li SOCL2 UL Certified Non Rechargeable 3.6 Volt Lithium Thionyl Chloride Battery. Easy to get from Amazon\u003c\/p\u003e\n\u003cp\u003e\u003ca title=\"Model 5100 Mass Flow Meter Quick Manual Rev 9\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/MF5100_QuickManual_R9.pdf?v=1601331754\" target=\"_blank\"\u003eBrochure and Quick Manual \u003c\/a\u003e(QR Code for Smart Phone Uaers)\u003c\/p\u003e\n\u003cp\u003e\u003cimg data-mce-fragment=\"1\" height=\"296\" width=\"296\" alt=\"QR Code 5100 Series Mass Flow Meter Manual Rev 9\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/qr-codeManualR-9_f413cf04-e70d-41bf-9f60-b100a48e1f2b_480x480.png?v=1601331963\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/qr-codeManualR-9_f413cf04-e70d-41bf-9f60-b100a48e1f2b_480x480.png?v=1601331963\"\u003e  \u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"float: none;\" alt=\"Low FLow Meter ModBusPoll Infographic\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/Low-Flow-Meter-ModBus-Poll-Infographicpng_2048x2048.png?v=1622662289\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eGas K-Factors for GCF Term:\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eAir (calibrated gas, GCF = 1000), N2 (no change, GCF = 1000), O2 (no change, GCF = 1000); Argon (GCF=1150); and CO2 (GCF=740). \u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"font-weight: 400;\"\u003e\n\u003cul style=\"font-weight: 400;\"\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e","brand":"Tactical Flow Meter","offers":[{"title":"0-15 SLPM \/ I have my own","offer_id":42082355085481,"sku":"LMFM51-2 15 lpm no conn","price":2215.0,"currency_code":"USD","in_stock":true},{"title":"0-15 SLPM \/ DB-15 with 8' Cable","offer_id":42082355118249,"sku":"LMFM51-3 15 lpm 8 ft cable","price":2235.0,"currency_code":"USD","in_stock":true},{"title":"0-15 SLPM \/ DB-15 with 10' Cable","offer_id":42082355151017,"sku":"LMFM51-4 15 lpm 10 ft cable","price":2255.0,"currency_code":"USD","in_stock":true},{"title":"0-100 SLPM \/ I have my own","offer_id":42082355216553,"sku":"LMFM51-6 100 lpm no conn","price":2215.0,"currency_code":"USD","in_stock":true},{"title":"0-100 SLPM \/ DB-15 with 8' Cable","offer_id":42082355249321,"sku":"LMFM51-7 100 lpm 8 ft cable","price":2235.0,"currency_code":"USD","in_stock":true},{"title":"0-100 SLPM \/ DB-15 with 10' Cable","offer_id":42082355282089,"sku":"LMFM51-8 100 lpm 10 ft cable","price":2255.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/products\/MF-5000-MassFlowMeter.png?v=1629500859"},{"product_id":"mems-thermal-mass-flow-meter-natural-gas","title":"Thermal Mass Flow Meter \u003cbr\u003efor Gas Flow (Methane and Natural Gas) \u003cbr\u003e1\/2\" to 2\" NPT","description":"\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eOur thermal Flow meters feature our proprietary MEMS time-of-flight mass flow sensor installed in a laminar flow channel that forms a boundary layer ensuring laminar flow exists in the desired measurement area.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eA thermal time-of-flight meter works well for methane and natural gas applications because it directly measures gas mass flow based on heat transfer, making it highly accurate even at low flow rates and low pressures, without needing external temperature or pressure compensation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eThermal time-of-flight meters work well for boilers because they accurately measure flow in high-temperature, variable conditions without obstructing the flow or being affected by pressure and density changes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eConventional thermal mass flow meters have sensitivity to the thermal properties of the gas as well as to the gas flow conditions. Our time of flight mass flow meter, utilizing the time of flight of micro pulses of thermal bursts of energy, has no sensitivity to temperature or gas properties when the system is “zeroed” in the desired gas. It is a pure “mass velocity” measuring machine that does not care about gas temperature or composition.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eTime of Flight Thermal mass flow meters for gases and air shipping from stock \u0026amp; configured for you. OEM customers welcome.\u003cbr\u003e\u003cbr\u003eEASY to use Low Flow Mass Flow Meters. Check our stock \u0026amp; prices that beats our competition\u003c\/span\u003e\u003c\/p\u003e\n\u003c!--split--\u003e\n\u003ch5\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h5\u003e\n\u003ch3\u003eThermal Mass Flow Meter Specifications\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/TFM-5700-Specifications.png?v=1727910226\" alt=\"Thermal Flow Meter Specifications\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003eNatural Gas Flow Meter Features\u003c\/h3\u003e\n\u003cdiv class=\"product-bullet-list\"\u003e\n\u003cul\u003e\n\u003cli\u003eNatural Gas Flow Meter for burners.\u003c\/li\u003e\n\u003cli\u003eMethane Gas Flow Meter for Billing\u003c\/li\u003e\n\u003cli\u003eGeneral purpose gas mass flow meter\u003c\/li\u003e\n\u003cli\u003eFast response time, customizable to 1 msec\u003c\/li\u003e\n\u003cli\u003eIP55 \/ NEMA  enclosure\u003c\/li\u003e\n\u003cli\u003eLarge dynamic range, over 100:1 S\u003c\/li\u003e\n\u003cli\u003eSerial, Analog and LCD interface\u003c\/li\u003e\n\u003cli\u003eCustomer accessible 3 button user Interface\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch5\u003e\u003cspan\u003e\u003cstrong\u003eInstructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003e\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/Quick_Manual_TFM5700_TOF_Series_Rev_3.4.pdf?v=1657903065\" title='Inline Methane and Natural Gas Mass Flow Meter 1\/2\" to 2\" NPT' target=\"_blank\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #2b00ff;\"\u003eTFM Thermal Meter Manual \u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"Methane Flow Meter Part Number System\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/Methane_Mass_Flow_Meter_Part_Numbers_600x600.png?v=1613604488\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/TFM-5700_TOF_Meter_Brochure-R4_24426710-2073-49e2-a59e-30cfca8218ba.pdf?v=1613593798\" title=\"Inline Methane and Natural Gas Flow Meter Brochure\" style=\"color: #2b00ff;\" target=\"_blank\"\u003eSeries TFM-5700 Brochure for Methane Mass Flow Meter\u003cbr\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch5\u003e\u003cstrong\u003eGas Conversion Factor\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp\u003eThe \u003cspan class=\"Yjhzub\"\u003eGas Conversion Factor (GCF)\u003c\/span\u003e is used to adjust flow readings when the meter is measuring a gas different from its default calibration gas (usually \u003cspan class=\"Yjhzub\"\u003eAir\u003c\/span\u003e or \u003cspan class=\"Yjhzub\"\u003eNitrogen\u003c\/span\u003e). Because different gases have unique thermal properties, such as density and specific heat, applying the correct GCF ensures measurement accuracy across various media\u003c\/p\u003e\n\u003ctable height=\"586\" data-sae=\"\" data-animation-nesting=\"\" style=\"border-collapse: collapse; width: 305px;\" width=\"303\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 106.333px;\" width=\"106\"\u003e \u003ccol style=\"width: 132.333px;\" width=\"133\"\u003e \u003ccol style=\"width: 64.3333px;\" width=\"64\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 30.0pt;\" height=\"40\"\u003e\n\u003ctd style=\"height: 30.0pt; width: 80pt;\" width=\"106\" class=\"xl65\" height=\"40\"\u003e\u003cstrong\u003eGas\u003cspan data-complete=\"true\" data-wiz-uids=\"kCnIpc_z,kCnIpc_10\"\u003e\u003c!--Sv6Kpe[[null,null,\u0026quot;2e2e6e83-1f03-41d4-aabf-3f51adbcf22f\u0026quot;,null,null,0,0,\u0026quot;\u0026quot;,\u0026quot;\u0026quot;]]--\u003e\u003c\/span\u003e\u003c!--Sv6Kpe[]--\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border-left: none; width: 100pt;\" width=\"133\" class=\"xl65\"\u003e\u003cstrong\u003eConversion Factor (GCF)\u003c!--Sv6Kpe[]--\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border-left: none; width: 48pt;\" width=\"64\" class=\"xl65\"\u003e\u003cstrong\u003eMenu Setting\u003c\/strong\u003e\u003c\/td\u003e\n\u003c!--Sv6Kpe[]--\u003e\n\u003c\/tr\u003e\n\u003c!--Sv6Kpe[]--\u003e\n\u003ctr data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 15.0pt;\" height=\"20\"\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 15.0pt; border-top: none; width: 80pt;\" width=\"106\" align=\"left\" class=\"xl66\" height=\"20\"\u003eAir\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"border-top: none; border-left: none; width: 100pt;\" width=\"133\" class=\"xl65\"\u003e1\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"border-top: none; border-left: none; width: 48pt;\" width=\"64\" class=\"xl65\"\u003e1000\u003c\/td\u003e\n\u003c!--Sv6Kpe[]--\u003e\n\u003c\/tr\u003e\n\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e\n\u003ctr data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 15.0pt;\" height=\"20\"\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 45.0pt; border-top: none; width: 80pt;\" width=\"106\" align=\"left\" class=\"xl66\" height=\"60\" rowspan=\"3\"\u003eNitrogen\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd style=\"border-top: none; width: 100pt;\" width=\"133\" class=\"xl67\" rowspan=\"3\"\u003e\n\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e1\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"border-top: none; width: 48pt;\" width=\"64\" class=\"xl67\" rowspan=\"3\"\u003e1000\u003c\/td\u003e\n\u003c!--Sv6Kpe[]--\u003e\n\u003c\/tr\u003e\n\u003c!--Sv6Kpe[]--\u003e\n\u003ctr style=\"height: 15.0pt;\" height=\"20\"\u003e\u003c\/tr\u003e\n\u003ctr style=\"height: 15.0pt;\" height=\"20\"\u003e\u003c\/tr\u003e\n\u003ctr data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 15.0pt;\" height=\"20\"\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 45.0pt; border-top: none; width: 80pt;\" width=\"106\" align=\"left\" class=\"xl66\" height=\"60\" rowspan=\"3\"\u003eOxygen\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd style=\"border-top: none; width: 100pt;\" width=\"133\" class=\"xl67\" rowspan=\"3\"\u003e\n\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e0.99\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"border-top: none; width: 48pt;\" width=\"64\" class=\"xl67\" rowspan=\"3\"\u003e990\u003c\/td\u003e\n\u003c!--Sv6Kpe[]--\u003e\n\u003c\/tr\u003e\n\u003c!--Sv6Kpe[]--\u003e\n\u003ctr style=\"height: 15.0pt;\" height=\"20\"\u003e\u003c\/tr\u003e\n\u003ctr style=\"height: 15.0pt;\" height=\"20\"\u003e\u003c\/tr\u003e\n\u003ctr data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 15.0pt;\" height=\"20\"\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 45.0pt; border-top: none; width: 80pt;\" width=\"106\" align=\"left\" class=\"xl66\" height=\"60\" rowspan=\"3\"\u003eArgon\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd style=\"border-top: none; width: 100pt;\" width=\"133\" class=\"xl67\" rowspan=\"3\"\u003e\n\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e1.45\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"border-top: none; width: 48pt;\" width=\"64\" class=\"xl67\" rowspan=\"3\"\u003e1450\u003c\/td\u003e\n\u003c!--Sv6Kpe[]--\u003e\n\u003c\/tr\u003e\n\u003c!--Sv6Kpe[]--\u003e\n\u003ctr style=\"height: 15.0pt;\" height=\"20\"\u003e\u003c\/tr\u003e\n\u003ctr style=\"height: 15.0pt;\" height=\"20\"\u003e\u003c\/tr\u003e\n\u003ctr data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 15.0pt;\" height=\"20\"\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 45.0pt; border-top: none; width: 80pt;\" width=\"106\" align=\"left\" class=\"xl66\" height=\"60\" rowspan=\"3\"\u003eHelium\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd style=\"border-top: none; width: 100pt;\" width=\"133\" class=\"xl67\" rowspan=\"3\"\u003e\n\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e1.45\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"border-top: none; width: 48pt;\" width=\"64\" class=\"xl67\" rowspan=\"3\"\u003e1450\u003c\/td\u003e\n\u003c!--Sv6Kpe[]--\u003e\n\u003c\/tr\u003e\n\u003c!--Sv6Kpe[]--\u003e\n\u003ctr style=\"height: 15.0pt;\" height=\"20\"\u003e\u003c\/tr\u003e\n\u003ctr style=\"height: 15.0pt;\" height=\"20\"\u003e\u003c\/tr\u003e\n\u003ctr data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 15.0pt;\" height=\"20\"\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 45.0pt; border-top: none; width: 80pt;\" width=\"106\" align=\"left\" class=\"xl66\" height=\"60\" rowspan=\"3\"\u003eCarbon Dioxide\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd style=\"border-top: none; width: 100pt;\" width=\"133\" class=\"xl67\" rowspan=\"3\"\u003e\n\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e0.74\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"border-top: none; width: 48pt;\" width=\"64\" class=\"xl67\" rowspan=\"3\"\u003e740\u003c\/td\u003e\n\u003c!--Sv6Kpe[]--\u003e\n\u003c\/tr\u003e\n\u003c!--Sv6Kpe[]--\u003e\n\u003ctr style=\"height: 15.0pt;\" height=\"20\"\u003e\u003c\/tr\u003e\n\u003ctr style=\"height: 15.0pt;\" height=\"20\"\u003e\u003c\/tr\u003e\n\u003ctr data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 15.0pt;\" height=\"20\"\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 45.0pt; border-top: none; width: 80pt;\" width=\"106\" align=\"left\" class=\"xl66\" height=\"60\" rowspan=\"3\"\u003eMethane\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd style=\"border-top: none; width: 100pt;\" width=\"133\" class=\"xl67\" rowspan=\"3\"\u003e\n\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e0.72\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"border-top: none; width: 48pt;\" width=\"64\" class=\"xl67\" rowspan=\"3\"\u003e720\u003c\/td\u003e\n\u003c!--Sv6Kpe[]--\u003e\n\u003c\/tr\u003e\n\u003c!--Sv6Kpe[]--\u003e\n\u003ctr style=\"height: 15.0pt;\" height=\"20\"\u003e\u003c\/tr\u003e\n\u003ctr style=\"height: 15.0pt;\" height=\"20\"\u003e\u003c\/tr\u003e\n\u003ctr data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 15.0pt;\" height=\"20\"\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 45.0pt; border-top: none; width: 80pt;\" width=\"106\" align=\"left\" class=\"xl66\" height=\"60\" rowspan=\"3\"\u003eAmmonia\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd style=\"border-top: none; width: 100pt;\" width=\"133\" class=\"xl67\" rowspan=\"3\"\u003e\n\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e0.73\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"border-top: none; width: 48pt;\" width=\"64\" class=\"xl67\" rowspan=\"3\"\u003e730\u003c\/td\u003e\n\u003c!--Sv6Kpe[]--\u003e\n\u003c\/tr\u003e\n\u003c!--Sv6Kpe[]--\u003e\n\u003ctr style=\"height: 15.0pt;\" height=\"20\"\u003e\u003c\/tr\u003e\n\u003ctr style=\"height: 15.0pt;\" height=\"20\"\u003e\u003c\/tr\u003e\n\u003ctr data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 15.0pt;\" height=\"20\"\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 45.0pt; border-top: none; width: 80pt;\" width=\"106\" align=\"left\" class=\"xl66\" height=\"60\" rowspan=\"3\"\u003ePropane\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd style=\"border-top: none; width: 100pt;\" width=\"133\" class=\"xl67\" rowspan=\"3\"\u003e\n\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e0.36\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"border-top: none; width: 48pt;\" width=\"64\" class=\"xl67\" rowspan=\"3\"\u003e360\u003c\/td\u003e\n\u003c!--Sv6Kpe[]--\u003e\n\u003c\/tr\u003e\n\u003c!--Sv6Kpe[]--\u003e\n\u003ctr style=\"height: 15.0pt;\" height=\"20\"\u003e\u003c\/tr\u003e\n\u003ctr style=\"height: 15.0pt;\" height=\"20\"\u003e\u003c\/tr\u003e\n\u003ctr data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 15.0pt;\" height=\"20\"\u003e\n\u003ctd data-complete=\"true\" data-sfc-cp=\"\" style=\"height: 45.0pt; border-top: none; width: 80pt;\" width=\"106\" align=\"left\" class=\"xl66\" height=\"60\" rowspan=\"3\"\u003eHydrogen\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd style=\"border-top: none; width: 100pt;\" width=\"133\" class=\"xl67\" rowspan=\"3\"\u003e\n\u003c!--Sv6Kpe[]--\u003e\u003c!--Sv6Kpe[]--\u003e1.01\u003c!--Sv6Kpe[]--\u003e\n\u003c\/td\u003e\n\u003ctd aria-owns=\"action-menu-parent-container\" data-complete=\"true\" data-sfc-cp=\"\" style=\"border-top: none; width: 48pt;\" width=\"64\" class=\"xl67\" rowspan=\"3\"\u003e1010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 15.0pt;\" height=\"20\"\u003e\u003c\/tr\u003e\n\u003ctr style=\"height: 15.0pt;\" height=\"20\"\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch5\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003c\/h5\u003e\n\u003ch3\u003eFeatures LARGE LCD display, shows the Flow Rate, Total Flow\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/Methane_Mass_Flow_Meter_User_Interface_480x480.png?v=1613604325\" alt=\"Natural Gas Flow Meter Display\" loading=\"lazy\"\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eThe TFM-5700 Methane Flow meter outputs mass flow rate, total and outputs 4-20 mA as well as ModBUS RTU.\u003c\/b\u003e\u003c\/p\u003e\n\u003ch3\u003eMethane Mass Flow Meter Flow Ranges\u003c\/h3\u003e\n\u003ctable height=\"166\" width=\"562\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 552px;\"\u003e\n\u003cp\u003e\u003cb\u003e1\/2\" NPT TMF5700 Flow Meter 0-20 SCFH, \u003cbr\u003e0- 0.33 SCFM \u003c\/b\u003e\u003cb\u003eor \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e1\/2\" NPT TMF5700 Flow Meter 0-650 SCFH, \u003cbr\u003e0- 10.8 SCFM\u003c\/b\u003e\u003cb\u003e \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e1\" NPT TMF5700 Flow Meter 0-240 SCFH, \u003cbr\u003e0- 41.2 SCFM \u003c\/b\u003e\u003cb\u003eor \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e1\" NPT TMF5700 Flow Meter 0-2500 SCFH, \u003cbr\u003e0- 41.6 SCFM\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e2\" NPT TMF5700 Flow Meter 0-3000 SCFH, \u003cbr\u003e0- 50 SCFM \u003c\/b\u003e\u003cb\u003eor \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e2\" NPT TMF5700 Flow Meter 0-6200 SCFH, \u003cbr\u003e0- 103 SCFM\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eNote: The maximum \"safe velocity\" within a pipe for natural gas and other flammable hydrocarbons is 30 m\/s\u003c\/p\u003e\n\u003ch5\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cdiv class=\"cgt-content\" style=\"text-align: start;\"\u003e\n\u003ch3\u003eMethane and Natural Gas Flow Meter Dimensions\u003ca title='2\" NPT Methane Mass Flow Meter Dimensions' href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/TFM-5700_Meter_Dimensions_R_1.pdf?v=1613594595\"\u003e\u003cbr\u003e\u003cimg style=\"color: #212b36; font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 1.4em;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/Methane_and_Natural_Gas_Flow_Meter_Dimensions_for_1_and_2_Inch_NPT_600x600.png?v=1613594517\" alt='1\" and 2\" NPT Methane and Natural Gas Flow Meter Dimensions' loading=\"lazy\"\u003e\u003cbr\u003e\u003c\/a\u003e\n\u003c\/h3\u003e\n\u003ch4\u003e\u003cstrong\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003ca title=\"Methane and Natural Gas Flow Meter Dimensions for 1 and 2 inch NPT sizes\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/TFM-5700_Meter_Dimensions_R_1.pdf?v=1613594595\" style=\"color: #2b00ff;\" target=\"_blank\"\u003eMethane and Natural Gas Flow Meter Dimensions link\u003cbr\u003e\u003cbr\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h4\u003e\n\u003ch5\u003e\n\u003cstrong\u003eWiring Guide\u003c\/strong\u003e\u003cspan style=\"color: #000000;\"\u003e\u003c\/span\u003e\n\u003c\/h5\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/Wiring_Guide_480x480.png?v=1614186623\" alt=\"Natural Gas Flow Meter Wiring Guide\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/Natural_Gas_Flowmeter_Wiring_Description_98b33e92-a68b-4177-9dad-5ee55ced8c41_1024x1024.png?v=1614186876\" alt=\"Natural Gas Flow Meter Wiring Guide\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cstrong\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/TFM-5700_TOF_Meter_Brochure-R4_24426710-2073-49e2-a59e-30cfca8218ba.pdf?v=1613593798\" title=\"Inline Methane and Natural Gas Flow Meter Brochure\" style=\"color: #2b00ff;\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch5\u003e\u003cstrong\u003eTheory\u003c\/strong\u003e\u003c\/h5\u003e\n\u003ch4\u003e\u003cstrong\u003eTFM-5700 Series Natural Gas Flow Meter Principle of Operation:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eOur TFM-5700 TOF Mass Flow meters feature our proprietary and state-of-the-art MEMS thermal time-of-flight mass flow sensor installed in a laminar flow channel that forms a boundary layer ensuring laminar flow exists in the desired measurement area.\u003cbr\u003e\u003cbr\u003eThe flow measurement, using our innovative time of flight MEMS technology, provides superior accuracy over conventional thermal mass flow meters. We utilize a a very low power micro heater that is pulsed where we measure the time the pulse takes to arrive at the measuring point located a precise distance away. The flow meter is a \"mass velocity measuring machine\" that measures the gas thermal properties to extract the density for true Mass Flow Rate Indication.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/Time-Of-Flight_Graphic.png?v=1613605916\" alt=\"Time of Flight Flow Meter\" style=\"width: 145px; height: 189px; object-fit: contain;\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is this an improvement over conventional Thermal Mass Flow Meters?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eConventional thermal mass flow meters have sensitivity to the thermal properties of the gas as well as to the gas flow conditions. Our time of flight mass flow meter, utilizing the time of flight of micro pulses of thermal bursts of energy, has no sensitivity to temperature or gas properties when the system is \"zeroed\" in the desired gas.\u003cbr\u003e\u003cbr\u003eIt is a pure \"mass velocity\" measuring machine that does not care about gas temperature or composition. Consider conventional thermal mass flow meters you may have used in the past that have to be calibrated for the specific gas and do not do well when the temperature of the gas changes rapidly.\u003cbr\u003e\u003cbr\u003eThe TFM-5700 series of Mass Flow Meters has no such sensitivity. As well, these meters are blazing fast compared to conventional thermal mass flow meters, and they take VERY VERY VERY little power to run.\u003cbr\u003e\u003cbr\u003eNote: Our thermal mass flow meters are an improvement to most \"top brand\" flow meters on the market, we invite you to investigate them. \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/Power_Supplies_Bolts_Gaskets_and_more.pdf?v=1605288973\" title=\"Where to get 24 VDC Power Supplies and flange bolts and gaskets\" target=\"_blank\"\u003eWhere to get Power Supplies, Gaskets, Nuts and Bolts\u003c\/a\u003e\u003c\/strong\u003e\u003c\/h4\u003e\n\u003ch5\u003e\u003cstrong\u003eVideos\u003c\/strong\u003e\u003c\/h5\u003e\n\u003ch4\u003eModBUS RTU quick video:\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eSimple instructions and details regarding the use of ModBus RTU with the TFM5700 Series Methane and Natural Gas Mass Flow Meter flow meter..\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"youtube-lite\" data-id=\"ENp5nBIAs2Q\"\u003e\n\u003cdiv class=\"youtube-lite__thumbnail\"\u003e\n\u003cimg src=\"https:\/\/img.youtube.com\/vi\/ENp5nBIAs2Q\/hqdefault.jpg\" alt=\"Video Thumbnail\" loading=\"lazy\"\u003e \u003cbutton class=\"youtube-lite__play\"\u003e▶\u003c\/button\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eVideo Below showing our Generic ModBus Program:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"youtube-lite\" data-id=\"3yBtgBUG_Zk\"\u003e\n\u003cdiv class=\"youtube-lite__thumbnail\"\u003e\n\u003cimg src=\"https:\/\/img.youtube.com\/vi\/3yBtgBUG_Zk\/hqdefault.jpg\" alt=\"Video Thumbnail\" loading=\"lazy\"\u003e \u003cbutton class=\"youtube-lite__play\"\u003e▶\u003c\/button\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Tactical Flow Meter","offers":[{"title":"1\/2\" 0-20 SCFH (0-0.33 SCFM)","offer_id":41700698194089,"sku":"TFM5700-BASE","price":1400.0,"currency_code":"USD","in_stock":true},{"title":"1\" 0-240 SCFH (0-4 SCFM)","offer_id":41700742037673,"sku":"TFM5700-BASE-7","price":1500.0,"currency_code":"USD","in_stock":true},{"title":"1\" 0-300 SCFH (0-5 SCFM)","offer_id":41700714053801,"sku":"TFM5700-BASE-6","price":1500.0,"currency_code":"USD","in_stock":true},{"title":"1\" 0-1200 SCFH (0-10 SCFM)","offer_id":41700698226857,"sku":"TFM5700-BASE-2","price":1500.0,"currency_code":"USD","in_stock":true},{"title":"1\" 0-3000 SCFH (0-50 SCFM)","offer_id":41700698259625,"sku":"TFM5700-BASE-3","price":1500.0,"currency_code":"USD","in_stock":true},{"title":"2\" 0-3000 SCFH (0-50 SCFM)","offer_id":41700698292393,"sku":"TFM5700-BASE-4","price":2000.0,"currency_code":"USD","in_stock":true},{"title":"2\" 0-10000 SCFH (0-166 SCFM)","offer_id":41700698325161,"sku":"TFM5700-BASE-5","price":2000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/products\/NaturalGasFlowMeter0.5InchClean6_60086805-e313-485b-be27-6035075dd537.png?v=1629501026"},{"product_id":"industrial-thermal-mass-flow-meter-gas","title":"Thermal Mass Flow Meter \u003cbr\u003e for Industrial Gas Flow \u003cbr\u003e1\/2\" to 8\"","description":"\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eAn industrial thermal flow meter is a precision instrument designed to measure the flow rate of gases in pipelines using the principles of heat transfer. Unlike mechanical meters that rely on moving parts, thermal flow meters use a heated sensor element placed in the gas stream. As the gas passes over the sensor, it carries away heat in proportion to its mass flow rate. The instrument continuously monitors the energy required to maintain a constant sensor temperature, translating this data into highly accurate flow measurements.  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eTypically, the instrument contains two temperature sensors—one that is actively heated and one that serves as a reference. When gas flows through the pipe, it absorbs heat from the heated element. The rate of heat loss is directly proportional to the mass flow rate of the gas, allowing the device to measure mass flow without requiring separate pressure or temperature compensation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eBecause thermal flow meters measure mass flow rather than volumetric flow, they are less sensitive to fluctuations in pressure and temperature that can cause errors in other flow measurement technologies. They are especially effective in applications with low-velocity or low-density gases where differential pressure devices (like orifice plates or Venturi meters) may lack sensitivity. Additionally, their design without moving parts ensures long-term stability and low maintenance in industrial environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003c!--split--\u003e\n\u003ch5\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h5\u003e\n\u003ch6 style=\"font-size: 1.17em; font-weight: bold; margin: 1em 0;\"\u003eThermal Mass Flow Meter Specifications\u003c\/h6\u003e\n\u003cdiv class=\"product-bullet-list\"\u003e\n\u003cul\u003e\n\u003cli\u003eMaterial: 316L SS\u003c\/li\u003e\n\u003cli\u003eFlow Range: 0.5 Nm\/s - 100 Nm\/s\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAccuracy:  ±0.5% Full Scale ±1% Reading\u003c\/li\u003e\n\u003cli\u003eTurndown: 100:1\u003c\/li\u003e\n\u003cli\u003eRepeatability:  ±0.2% Reading\u003c\/li\u003e\n\u003cli\u003eResolution:  0.0244% Full Scale\u003c\/li\u003e\n\u003cli\u003ePipe Size: \n\u003cul\u003e\n\u003cli\u003eInline: 1\/2\" to 8\" 150# ANSI flange connections, 1\/2\" to 4\" NPT connections\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInsertion: 6\" to 72\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eTemperature: -40°C to 125°C\u003c\/li\u003e\n\u003cli\u003ePressure:  Per connection rating\u003c\/li\u003e\n\u003cli\u003ePower Requirement: 24 VDC \u0026amp; 85-240 VAC standard\u003c\/li\u003e\n\u003cli\u003eMax Power:  15 Watts\u003c\/li\u003e\n\u003cli\u003eOutput signals: 4-20mA and Pulse\u003c\/li\u003e\n\u003cli\u003eDigital communications: Modbus RTU\u003c\/li\u003e\n\u003cli\u003eSensor:  Dual platinum coil thermal mass flow sensors\u003c\/li\u003e\n\u003cli\u003eLCD Display: LED + 4-button keypad\u003c\/li\u003e\n\u003cli\u003eWiring connection to enclosure size: M20 x 1.5\u003c\/li\u003e\n\u003cli\u003eFactory Final QC Test Certificate\u003c\/li\u003e\n\u003cli\u003eIntegral Electronics\u003c\/li\u003e\n\u003cli\u003eElectronics Enclosure: Aluminum Ex Proof, IP66\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch5\u003e\u003cstrong\u003eInstructions\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/Quick_Start_Thermal_Mass_Flow_Meter_Manual_V3.4_.docx.pdf?v=1757010952\" title=\"MAG-Meter-Quick-User-Manual-Style-2\" target=\"_blank\"\u003eTFM Thermal Flow Meter User Manual v3.4\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Tactical Flow Meter","offers":[{"title":"1\/2\" \/ ANSI","offer_id":46257879744681,"sku":"ThermI-AN-1_2","price":2240.0,"currency_code":"USD","in_stock":true},{"title":"1\/2\" \/ NPT","offer_id":46257879777449,"sku":"ThermI-NPT-1_2","price":2240.0,"currency_code":"USD","in_stock":true},{"title":"3\/4\" \/ ANSI","offer_id":46257879842985,"sku":"ThermI-AN-3_4","price":2280.0,"currency_code":"USD","in_stock":true},{"title":"3\/4\" \/ NPT","offer_id":46257879875753,"sku":"ThermI-NPT-3_4","price":2280.0,"currency_code":"USD","in_stock":true},{"title":"1\" \/ ANSI","offer_id":46257879941289,"sku":"ThermI-AN-1","price":2320.0,"currency_code":"USD","in_stock":true},{"title":"1\" \/ NPT","offer_id":46257879974057,"sku":"ThermI-NPT-1","price":2320.0,"currency_code":"USD","in_stock":true},{"title":"1 1\/4\" \/ ANSI","offer_id":46257880039593,"sku":"ThermI-AN-1_1_4","price":2360.0,"currency_code":"USD","in_stock":true},{"title":"1 1\/4\" \/ NPT","offer_id":46257880072361,"sku":"ThermI-NPT-1_1_4","price":2360.0,"currency_code":"USD","in_stock":true},{"title":"1 1\/2\" \/ ANSI","offer_id":46257880137897,"sku":"ThermI-AN-1_1_2","price":2400.0,"currency_code":"USD","in_stock":true},{"title":"1 1\/2\" \/ NPT","offer_id":46257880170665,"sku":"ThermI-NPT-1_1_2","price":2400.0,"currency_code":"USD","in_stock":true},{"title":"2\" \/ ANSI","offer_id":46257880236201,"sku":"ThermI-AN-2","price":2480.0,"currency_code":"USD","in_stock":true},{"title":"2\" \/ NPT","offer_id":46257880268969,"sku":"ThermI-NPT-2","price":2480.0,"currency_code":"USD","in_stock":true},{"title":"2 1\/2\" \/ ANSI","offer_id":46257880334505,"sku":"ThermI-AN-2_1_2","price":2680.0,"currency_code":"USD","in_stock":true},{"title":"2 1\/2\" \/ NPT","offer_id":46257880367273,"sku":"ThermI-NPT-2_1_2","price":2680.0,"currency_code":"USD","in_stock":true},{"title":"3\" \/ ANSI","offer_id":46257880432809,"sku":"ThermI-AN-3","price":2880.0,"currency_code":"USD","in_stock":true},{"title":"3\" \/ NPT","offer_id":46257880465577,"sku":"ThermI-NPT-3","price":2880.0,"currency_code":"USD","in_stock":true},{"title":"4\" \/ ANSI","offer_id":46257880531113,"sku":"ThermI-AN-4","price":3040.0,"currency_code":"USD","in_stock":true},{"title":"4\" \/ NPT","offer_id":46257880563881,"sku":"ThermI-NPT-4","price":3040.0,"currency_code":"USD","in_stock":true},{"title":"5\" \/ ANSI","offer_id":46257880629417,"sku":"ThermI-AN-5","price":3520.0,"currency_code":"USD","in_stock":true},{"title":"6\" \/ ANSI","offer_id":46257880727721,"sku":"ThermI-AN-6","price":3880.0,"currency_code":"USD","in_stock":true},{"title":"8\" \/ ANSI","offer_id":46257880826025,"sku":"ThermI-AN-8","price":4800.0,"currency_code":"USD","in_stock":true},{"title":"Insertion 3\/4\" \/ ANSI","offer_id":46447838789801,"sku":"ThermI-Ins-3_4","price":2240.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/files\/TFM_Thermal_ANSI_Front.webp?v=1767891061"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1571\/4565\/collections\/TFM_Thermal3_3dfe9432-9401-49dd-bdf8-170b76e15b1f.jpg?v=1757520506","url":"https:\/\/www.tacticalflowmeter.com\/collections\/thermal-mass-flow-meters\/thermal-mass-flow-meter.oembed","provider":"Tactical Flow Meter","version":"1.0","type":"link"}