【 Flow Meter 】 FM-110

Flow meter
For a single fuel flow detector

FM-110 背面 

Equipped with all the required functions and performance for the measurement of fuel flow

Three simultaneous ways to measure the flow   Instantaneous, time-averaged flow, and total flow

Voluminous measured data output    Analog, USB data, and pulse output


  • High-speed response   Analog output updated every 1ms
  • Simultaneous output of 5 analog channels   Five different analog outputs are possible simultaneously, as instantaneous flow, total flow, average flow of total time, temperature, and pressure
  • USB data output   Display data can be output as USB data simultaneously with analog output
  • A single pulse conveniently output every 0.1mL for overall management of total flow
  • Insulation   Each input and output part is provided with isolation
  • Erroneous operation is prevented by a key lock function
  • Temperature and pressure measurement (option)
  • Added function for temperature-corrected volume flow rate

Introduction to Functions

【High-speed analog output】
Updated analog output every 1ms at high speed. Rapid variations in the fuel flow are measured with precision. And it can be used in connection with measurements to verify correspondence with the throttle opening.

【Display switching】
You can switch and view different measurement displays even when taking measurements. Using the “MONI” key, you can conveniently switch the display between 4 patterns of the 8 different types, the instantaneous flow, the average flow of total time, the total flow, the total time, the previous total flow, and the previous total time, as well as the pressure and temperature.

【Automatic measurement using the time-up function】
It is possible, for example, to set the total time in advance as 20 seconds and make repeated measurements of the average flow over 20 seconds.  Data for the instantaneous flow, temperature, and pressure are continuously measured in real time.




FM-110 Vehicle-mounted flow meter

Display method 16-digit x 2 rows, character height approx. 5.6mm, character LCD, green backlight
Range of display and measurement
  Instantaneous flow and average flow
  of total time
-99.999 to 999.999((L, mL, kg, g)/(hour, minutes))
  Total flow -99999.999 to 999999.999(m)L/(k)g
  Pressure 0.0 to 1000.0kPa
  Temperature -20.0 to 80.0
Display refresh time 0.1s/1.0s
Accuracy Excludes the accuracy of the sensor
  Instantaneous flow and average flow
  of total time
±50ppm (RD) ±1digit
  Total flow ±1digit
  Pressure ±0.5kPa
  Temperature ±0.5
Signal input
Number of inputs 1 input (HR10A-10R-12S(71)(Hirose Electric Co., Ltd.)), HR10-10P-12P(73) plug
Supply voltage for the sensor 12V, 100mA (max
Flow sensor
  Output signal format A/B phase / UP/DOWN
  Trigger level 2.5V (74HC14 equivalent)
  Voltage resistance -10V to +15V
  Pull-up Pulled up to 5V by 10kΩ
  Input frequency 50kHz
Temperature sensor
  Element Pt100, 3-wire system, excitation current 0.2mA
Pressure sensor
  Input range 1-5V (1V = 0kPa
Contact input
Number of inputs 2 inputs (screwless terminal block ML-4000 (Sato Parts))
Functions Start, stop and reset for the total measurement of the 0V terminal and during a short circuit.
Trigger level 2.5V
Voltage resistance -10V to +80V
Pull-up Pulled up to 12V by 4.7kΩ
Pulse output
Number of outputs 1 output (BNC receptacle)
Output items 1/10/100/1000P/mL: single pulse output for each 0.1mL increase in total flow
Output voltage 0-5V (0.5V (max) voltage drop at 1kΩ load)
Analog output
Number of outputs 5 outputs (BNC receptacle), instantaneous flow, total flow, average flow of total time, pressure, and temperature
Refresh time Instantaneous flow: 1ms, total flow (1ms for each measurement taken), and average flow of total time (for each measurement taken), pressure and temperature : 50ms
Output range ±10V (using D/A 16-bit)
Accuracy Instantaneous, total, and average flow of total time: ±0.1% (FS)
Pressure: ±0.15% (FS)
Temperature: ±0.6% (FS)
Allowable load resistance 10kΩ
Interface USB mini-B
(output of display values, and receiving at the PC side using general-purpose software)
General specification
Insulation Power supply input/sensor signal input and contact input/analog output and pulse output
Power supply input voltage (power) DC9V to 32V, 5W (max)
External dimensions (mm) W: 140 H: 40 D: 100 (excluding projecting parts)
Weight Approx. 480g
Operating temperature and humidity range 0 to 40/85%RH or less (with no condensation)
Accessories AC adaptor (1), adhesive rubber feet (4), DC plug cable with a lock (1) and without a lock (1)

Related Case Studies


Measurement of Fuel Flow on an Actual Vehicle

Low-pressure loss fuel flow detector.


Fuel Flow Measurement on a Test Bench

Example measurement with a fuel line.