Volumetric flow measurement
Instantaneous and integrated fuel flow rate measurement on bench/board fuel consumption test
The volumetric flow rate refers to the volume of flow per fixed amount of time.
The volumetric flow rate can be easily measured by installing the FP series flow detectors in the flow path and combining them with the digital flow meter FM-3100 or DF-2200.
Since the volume changes (expansion/contraction) depending on temperature, it is important to control temperature during measurement.
Flow detectors/ Flow meters
Standard type FP-5000 series
Pressure loss compensation type FP-213S/2140S
On-board type FP-4135
There are two types of digital flow meters: standard type and on-board type.
FM-3100 Digital Flow Meter
DF-2200 On-Board Fuel Flow Meter
| Specifications | Digital Flow Meter FM-3100 | On-Board Digital Flow Meter DF-2200 |
|---|---|---|
| Applicable detector | FP series/ FD-5110/ FX series/ FZ series * Please select the compatible module (sold separetely) with each detectors. |
FP-4135/MF-3200/FP-213S/2140S FP-5131/5133, FP-5141/5143 |
| Power source | AC100 V to 240 V ± 10 % 80 VA or less (when connected to the FP-2140S and the FM-3100) |
DC10 to 28 V, 28 VA or less |
| Operating temperature range | 0 to +50 °C | 0 to +50 °C *Operating temperature range of AC adapter is 0 to +40 °C. |
| Operating humidity range | 10 to 85 % (without condensation) | 5 to 80 % |
| Storage temperature range | -10 to +60 °C | -10 to +60 °C |
| Storage humidity range | 10 to 85 % (without condensation) | 5 to 85 % |
| Outer dimension | 240（W）× 99（H）× 297（D） mm *The projection is not included. | 170（W）× 49（H）× 120（D）mm *The projection is not included. |
| Weight | Approx. 3 kg | Approx. 800 g |
| Conforming standard | CE marking (FM-0311) LVD Directive 2014/35/EU Standard EN61010-1 EMC Directive 2014/30/EU Standard EN61326-1 ClassA Group1 RoHS Directive 2011/65/EU Standard EN50581 |
LVD Directive 2014/35/EU Standard EN61010-1 (with AC adapter) (with AC adapter) EMC Directive 2014/30/EU Standard EN61326-1 RoHS Directive 2011/65/EU Standard EN50581 |
| Measurement items | Time/ temperature/ pressure Module for FP/FD : instantaneous flow rate, instantaneous density Module for FZ : instantaneous flow rate, instantaneous density Module for FX : instantaneous flow rate |
Instantaneous flow rate/time / temperature/ pressure/ integrating flow rate |
| Accessory | AC power cable, FM-0012 analog output conversion adapter (D-Sub to BNC 0.5m), instruction manual | DC power cable with clamp |
Temperature Sensors
FP-5000 series Volumetric Flow Detectors
In volumetric flow rate measurement, it is important to measure the temperature at the time of measurement together with the flow rate.
Temperature/pressure sensor unit for FP-5000 seires is available (as option).
FP-4135 On-board Volumetric Flow Detector
Built-in temperature sensor
Temperature measurement range : -30 °C to +100 °C
Temperature accuracy : Class A
Flow detector with pressure loss compensation function
The EH-0081 temperature sensor, the EH-0082 pressure sensor are required to install when adding tempresure/pressure sensor to FP-213S, 2140S. They can be added by the block (made-to-order) instead.
Measurement principle
Four pistons are arranged radially in the flow detection unit, and move back and forth repeatedly according to the flow of fluid from the inlet to the outlet. The pistons are rotated by the crankshaft, and their movement is transmitted to the magnetic-coupled rotation detection unit. The rotary encoder mounted on the rotation detection unit generates pulse signals in accordance with the amount of piston movement, and they are calculated and displayed to obtain instantaneous flow rate/total flow rate in calculation/display section. The pulse signals generated by two pair of light-projecting/receiving elements with 90-degree phase difference are judged its rotating direction to perform accurate flow rate measurement without being affected by back-flow or pulsation.
System configuration
Case Study
When the fuel was cooled by the heat exchanger ①, the volumetric flow rate measured by the FP-4135 increased for a instant due to the contraction of liquid caused by cooling. As for the FP-5134, it decreased due to cooling. You can see that the temperature change of the fuel affects the measurement result.
Test condition
- - Let the fuel flow at a constant rate.
- - Not let cooling water flow through the heat exchanger ① at firsrt.
- - At the timing when 10 seconds have passed in the time series graph, let cooling water of 15 ℃ flow rapidly through the heat exchanger ①.
Related information
Last update:2022/03/31