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NSF/ANSI Certified Turbine Flow Meters

Turbine Flow Meter, 0.026 to 0.65 GPM, Trogamid, 1/4" NPT, 3 Pin Mini DIN


Item# BV1000TRN025A

In stock

Lead Time (If not in stock): 20 weeks
Turbine Flow Meter, 0.026 to 0.65 GPM, Trogamid, 1/4" NPT, 3 Pin Mini DIN BV1000TRN025A BV1000TRN025A
  • Compact size
  • Measurement in any meter orientation
  • Operating pressure up to 362.50 psi (25 bar)
  • Temperature range of –4…212° F (–20…100° C)

BV1000TRN025A Model Options

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Flow Range
Process Connection Type
Process Connection Size
Connector Type
Media type
Output Signal
Max Process Temperature
Wetted Materials

  • Power Source 5 to 24 Vdc
  • Burst Pressure 2900 psi (200 bar)
  • Output (Hz) NPN sinking open collector
  • Output Current Max. 20 mA (Pull-up resistor required. See wiring diagram in User Manual.)
  • Repeatability < 0.50 % under the same operating conditions
  • Viscosity Up to 16 cSt

The Vision Turbine Meters comply with the lead-free provisions of the Safe Drinking Water Act. Available models include meters that are:

  • Bisphenol A (BPA)-free
  • Certified to NSF/ANSI Standards 61 and 372


    The rotor is turned by the liquid force proportional to flow. A Hall effect sensor supplies pulses that can be used for digital or analog signal processing. The generated pulses are specified as a K-factor.


    Liquid flow causes a bladed turbine inside the meter housing to turn at an angular velocity directly proportional to the velocity of the liquid measured. As the blades pass beneath a magnetic pickup coil, a frequency signal is generated. Each pulse is equivalent to a discrete volume of liquid. The frequency pulse is directly proportional to the turbine angular velocity and the flow rate. The large number of pulses provides high resolution. As the mass of the turbine is small, the response time is fast. It is not necessary to install a straight length of pipeline upstream of the meter. The simple mechanical construction of the Vision meter provides a long lifespan without any loss of accuracy. Pressure spikes less than the burst pressure rating do not affect the measurements.

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    Rated 5 out of 5 by from Turbine Flow Meter, 0.26 to 6.6 GPM, Trogamid, 3/8 I have used multiple iterations of these flow meters are they are reliable and easy to configure for our needs.
    Date published: 2022-08-05
    Rated 5 out of 5 by from 1/4 inch flow meter Flow meter works great much better than the previous model pull up resistance is easy to get right
    Date published: 2022-03-11
    Rated 5 out of 5 by from As described. Good product Has been working well and will be ordering more of these
    Date published: 2023-11-27
    Rated 5 out of 5 by from Excellent little meter for low-flow applications. A compact, well made, and very precise device. Wiring it up took about 15 minutes, and it integrates easily into any device that can measure square-wave frequency or count pulses. Very satisfied with the devices precision.
    Date published: 2023-05-08
    Rated 2 out of 5 by from Not Plug & Play I purchased this sensor under the assumption that I could connect in to my OMB-DAQ-2408 and read the frequency of pulses through DAQami. Although DAQami supports frequency on counter channels, this feature wasn't available for my device. After spending 10hrs screwing about and downloading DASYlab, I called customer support. They recommended I buy a 500$ signal conditioner. Reminder-- This 125$ sensor also needs an external pull up resistor because it would've been too expensive to integrate inside the device. I understand that Omega does not create these devices or any of the software but it was a very frustrating experience that could've been avoided with a better shop page.
    Date published: 2023-01-30
    Rated 3 out of 5 by from Product Ethanol Compatibility it is good with water but not compatible with ethanol
    Date published: 2023-01-20
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    loading all QA

    Do you have any advice on wiring the pull-up resistor with an Arduino? I have tried and can't get my Arduino to read the signal from the brown wire, all I get are zeros. I'm sure I'm doing something wrong but would love any resources you could provide.

    Asked by: Plis
    Thank you for your inquiry. A customer supplied pull-up resistor of 1.2 ~ 2.2 KOhm, 1/4 Watt between Red &amp; Brown and should be able to have your Arduino sense the pulse.
    Answered by: Application Engineer JC
    Date published: 2023-10-06

    I would like to use a Raspberry Pi to count the pulses, but the Raspberry Pi GPIO uses 3.3 V logic. The data sheet indicates an input voltage range of 5-24 V. What is the amplitude of the output pulses?

    Asked by: Gregory B
    Thank you for your inquiry! The amplitude of the output will match that of the supply voltage used with the unit. If a 5V supply is used the square wave will reach and amplitude of 5V and then drop to 0V.
    Answered by: Application Engineer JM
    Date published: 2022-07-25

    What is the sampling rate?

    Asked by: Charles Chip III
    Thank you for your inquiry. The sampling rate for this flow meter is instantaneous as a result of the frequency output.
    Answered by: Applications Engineer JJC
    Date published: 2023-12-12

    Are these flow meters chemical resitant?

    Asked by: Gera
    Thank you for your inquiry. Chemical compatibility is the responsibility of customers to check against the wetted materials of the flow meter to the liquid being measured. If it is not a corrosive liquid, then, it is or will be compatible.
    Answered by: Application Engineer JC
    Date published: 2023-05-01

    What is the IP rating of this device?

    Asked by: TMGP
    Thank you for your inquiry. Unfortunately, it does not have an IP rating, only for indoor use.
    Answered by: Applications Engineer JJC
    Date published: 2023-11-14

    What is the conversion between the output frequency (Hz) and flow rate (lpm)? I couldn't find it in the datasheet.

    Asked by: JasonBayArea
    Thank you for your inquiry about the flow meter. There is an equation that directly liniks HZ to flow rate and goes as follows: f = (Q x K)/60 where f is Hz Q is the flow rate in gallons per minute K is the K-factor which is typically in pulses per gallons or pulses per volume determine by the flow meter
    Answered by: Application Engineer JC
    Date published: 2023-08-23

    Do you sell a monitor and/or cataloguer compatible with this flow meter?

    Asked by: Alex2022
    Thank you for your inquiry about the flow meter. The DPF75 meter will display both flow rate and total volume or the DPF78 meter will display only the flow rate.
    Answered by: Application Engineer JC
    Date published: 2022-06-17

    What range should we expect the K-factor for pulse to flowrate conversion to be (for water)? Would you recommend finding this for each flowmeter or just using a consistent value for each fluid type? Thank you.

    Asked by: chris3435
    Thank you for your inquiry. The K-factor is listed on the data sheet in both pulses per gallon and pulses per Liters and ideally for water. In the event you are using a different liquid that is not water, you will need to adjust for a new K-factor and the following equation can assist: f = (K x Q)/60 f = Hz K = pulses per gallon Q = is the flow rate in GPM
    Answered by: Application Engineer JC
    Date published: 2023-09-19
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