1/2" to 12" MAG Flow Meter.
MAG Flow Meters at the prices of High-End Clamp On Ultrasonic Flow Meters and feature accuracies of 0.5% of READING.
Amazing Sensitivity for conductivity requiring a minimum of 10 micro Siemens/cm (compared to more than 20 micro Siemens/cm required for competitors)
Electromagnetic flow meters, (aka mag meters or magnetic meters), are volumetric flow meters which do not have any moving parts. This lack of moving parts reduces the need for maintenance or replacement. Our mag flow meters have an accuracy over a wide flow range that can often exceed ± 0.5% of flow rate.
Our MAG flow meters are ideal for liquids. They ship from stock and are configured for you. In-stock and at prices that beats our competition.
Features LARGE LCD display, shows the Instantaneous Flow Rate, Total Flow, in user selectable units.
- Electrode Material: 316L SS
- Wetted Materials Teflon, 304 SS, & 316 SS
- Flow Body Material 304 SS
- Flow Velocity 0.3 - 12 m/s Nominal 0.3 - 10 m/s for 0.5% Accuracy
- Accuracy: +/- 0.5% of reading in water (From 0.3 m/s to 10 m/s)
- Repeatability of +/- 0.15% of reading
- 1/2" to 4" 150# ANSI flange connections, up to 8" available.
- LCD Display
- Liquid: 14°F (-10°C) to 350°F (180°C)
- Ambient: 14°F (-10°C) to 140°F (60°C)
- Power Requirement: 24 VDC 20 Watts maximum;
- Output signals: Modbus RTU, 4–20 mA, and 0-10 KHz for flow rate indication
- Digital communications: Modbus RTU
- Proof Pressure 1.6 MPa, 230 PSIG.
- Display: Flow rate, Flow rate 0-100%, and total flow
- Wiring connection to enclosure size: M20 x 1.5
- Factory Final QC Test Certificate
- Integral Electronics
- Electronics Enclosure: IP65
Magnetic flow meters (MAG flow meters) are volumetric flow meters for measuring CONDUCTIVE LIQUIDS [Not Gases] (Min conductivity of 5 microsiemens/cm2) that operate without any moving parts and are ideal for potable water and wastewater applications as well as ideal for any conductive or water based clean or dirty fluid. Magnetic flow meters will generally not work with hydrocarbons, distilled water, and many non-aqueous solutions as they require a conductive fluid of 5 microSiemens/cm minimum.
The table below gives a guideline of the nominal maximum GPM for various pipe sizes. Flows in well designed piping systems, to minimize wear and noise, and energy, are typically no more than 10 m/s max. Note these meters can easily go to 12 m/s for systems, such as high pressure fire fighting systems and blowdown systems.
MAG Meter Installation requirements:
Quick video above showing how to use the front panel buttons. The SECRET password to CHANGE variables is 03210 where 00521 is for VIEWING only. To get back to NORMAL operation hold the Enter button (the rightmost button) for 3 to 5 seconds. Password to Configure Calibration is 19818
Video above shows how to set up the Flow Units and Full Scale for those units. Note that this scaling is for driving the 4-20 mA and the frequency output so that the Full Scale value at 20 mA and at full scale Frequency is the number that is set. In this case the 4-20 and the frequency will output 20 mA and 5,000 Hz when the display shows 200 GPM. If the display goes OVER 200 GPM the 4-20 and the Frequency will increase until it "bumps it's head" on the maximum value. If the value on the display is GREATER than the value in Full Scale then one would adjust this value to accommodate the anticipated maximum value.
The video above shows how to set up the meter for Pulse and Frequency and shows how the 4-20 mA is configured.
Simulating and validating the 4-20 mA output using the User Interface with 03210 is detailed below. You may ALTER these values (AnalogZero and AnlgRange) using 03210 and they will revert when you exit.
Note the 4-20 mA output for this meter is POWERED by the meter. DO NOT connect to a PLC that provides 24 VDC. Connection is made to the 4-20 mA signal using a reading mode just like a Fluke Meter configured to read 4-20 mA DC. The MAG meter provides the 24 VDC for outputting the value to the INPUT of your PLC. Every PLC has the ability to be configured to read this type of 4-20 mA output. (Note: From the main menu the AnalogZero is 49 hits of the UP arrow.) (ADJUSTMENT of the 4-20 Output drive is attained using secret password of 19818 and is risky to use.)
If the meter indicates a NEGATIVE flow you may REVERSE the flow using Menu 8: Flow Direction and change it from the indicated value to either the REVERSE or FORWARD value.
Note: If the flow indicates a NEGATIVE FLOW number AND you know it is going from LEFT to RIGHT Menu 8 may be used to FLIP the sign. The Flow Direct is a "switch" to take care of the "Right Hand Rule" with regards to the direction of the current vector in Faraday's Law and does not require the direction to agree with the arrow on the meter.
If the meter indicates a NEGATIVE flow on the display and does not output 4-20 mA it means that Menu 13: SigmaN Ena can be set to ENABLE to allow the 4-20 to indicate flow in both the + and negative direction. Set Menu 13: SigmaN Ena to DISABLE if you do not want flow to indicate if the flow reverses. In this case the mA will go to 0 mA to indicate reverse flow, but not the magnitude in rate. However, the NEGATIVE Totalizer will account for the negative flow.
IMPORTANT NOTE: This meter is not a "Loop Powered" device, unlike almost all temperature and pressure transducers that are loop powered. This meter takes 500 mA to run so you can see that they can not be Loop Powered. It is CRITICAL that 24 VDC is NOT connected to the 4-20 mA signal lines of COM and I+ where COM is connected to the "low" side,-, of the 4-20 mA and the I+ is connected to the "high" side,+. Your PLC has a mode in it to read these meters that does NOT involve sending power to the meter. These meters are SOURCING the 24 VDC. Connecting 24 VDC to the Current Output lines may void warranty.
The video below shows how to VALIDATE the 4-20 mA signal into your PLC or reading device. Note: If this DOES NOT WORK a likely cause is the power supply does not have enough "power" to provide to the meter. The meter requires a MAX of 500 mA so have a power supply that has the capability to DELIVER 500 mA, even on "start up" where the inrush current given to the electromagnetic coils can rush over 500mA for a few milliseconds.
How to Reset the Totalizer in the MAG Meter. The Password to set the password for the totalizer reset is 19818. We show Clr Sum Key as the 24'th element in the menu structure. The video shows how to set the Totalizer Reset password to 10000.
View video above to see how an INSERTION MAG meter is installed, which is DIFFERENT than the flange meters on this product page. Please visit INSERTION MAG meter product listing if you discover you need an Insertion Mag Meter.
Note: The following display orientations can be ordered so the user does not have to orient in the field.
Where to get Power Supplies, Gaskets, Nuts and Bolts Link
MAG Meter Conductivity chart for various fluids. LINK.
Refer to this chart to ensure your fluid has sufficient conductivity to honor Faraday's Law that is the essence of the MAG Meter.
MAG Meter Theory and Wiring
Battery Powered MAG Meter Specifications
4-20 mA Connection to Battery Powered MAG meter
Battery Powered MAG Meter User instruction video overview:
MAG Meter Grounding Ring Sets
Visit Grounding RIng page here
Insertion MAG Meter overview.View video above to see how an INSERTION MAG meter is installed, which is DIFFERENT than the flange meters on this product page. Please visit INSERTION MAG meter product listing if you discover you need an Insertion Mag Meter. Note: The following display orientations can be ordered so the user does not have to orient in the field.
View video above to see examples of LabVIEW programs we supply to Universities and some customers to assist in getting their projects online.