DFL Sensors - Fuel Flow Meters0 pages

Accessories

DFL Sensors

Type CDFL1A..., CDFL3A...

Fuel Flow Meters
DFL sensors are especially designed for fuel consumption
measurement in mobile vehicle testing.
•t Very simple installation
•t High measurement resolution
•t Suitable for all current fuel supply systems, with or without
return flow
•t Suited for gasoline, diesel, bio-diesel and alcohol fuel
•t Leakage-protected quick couplings, fuel-resistant hoses
and sealings
•t Signal outputs: Analog, Digital, CAN-Bus, USB and
RS-232C

CDFLA_000-814e-02.13

Description
DFL sensors are developed for quick and easy fuel consumption measurement. Small dimensions and little weight enable
the devices to be installed in almost any vehicle for mobile
testing. The sensors are also designed for test bench applications, like the use on power analyzers or engine dynamo­
meters. Today’s DFL devices suit all kinds of consumption measurement with gasoline, diesel, alcohol based and bio fuels
due to easy handling, robust and durable construction and
also due to unique quality. An external signal processor that
is included in the scope of delivery reads the measured data
from the sensor and provides different outputs for the user's
data acquisition.
Application
The field of applications covers fuel consumption testing with
engines of passenger cars, trucks, heavy duty and specialized
vehicles and motorbikes. The devices can be used mobile in
vehicles as also stationary at the test bench. The DFL systems
fit to almost all fuel systems.
DFL1x-5bar sensors suit installation in vehicles with only one
feed line to the engine with no return line to the tank.
DFL3x-5bar sensors suit installation in vehicles with feed line
to the engine and return line to the tank.
Technical Data
Performance SpecificationsttDFL1x-5bartt
DFL3x-5bar
Measuring range (sensor)t
l/htt 0,5 ... 250
Flow rate max. (pump)
ttt at 1 bart
l/htttt
190
ttt at 5 bart
l/htttt
120

DFL1x-5bar

DFL3x-5bar

ttt
DFL1x-5bartt
DFL3x-5bar
Measurement accuracyt
%tt
±0,5
t (range 1 ... 50 l/h)
Reproducibilityt
%tt±0,2
Operating pressure max.1)tbartt 5
Pressure dropt
bartt 0 ... 0,5
Resolutiontcm3tt0,33
Signal Outputs2)tt
Digital 1 (act. consumption)t pulses/cm3tt 50 ... 10 000
Digital 2 (fuel flow)t
Hz/l/htt 1 ... 10 000
Digital 5 for connection to ttt
proportional to Dig 1
ttt a stand-alone display
Digital 2 (fuel flow)t
Vtt 0 ... 10
Vtt 0 ... 10
Analog 2 (temp. input)3)t
Analog 3 (temp. output)3)t
Vtt 0 ... 10
Analog 4 (pressure)4)t
Vt
nottt 0 ... 10
Interfaces
CAN (Motorola/Intel)5)ttt2.0B
USB (Full Speed)t
tt
2.0
RS-232Ctttyes
System Specifications
Power supplyt
Power consumption max.t
Temperature ranget
ttt Relative humidityt
Protection standard t
Dimensions (LxWxH)t
Weight (approx.)t

VDCt
10 ... 28 ttt 10 ... 15
At
0,2ttt
8
°Ctt –20 ... 70
%tt
80
ttt
IP34
mm t
183x106x94tt 3t 4x193x125
4
kgt
2ttt
9

1)

built-in pressure regulator with DFL3x-5bar
of the external signal processor
3)
only available with option "PT100"
4)
only available with option "Pressure Sensor, Internal connection"
5)
actual consumption in: l/100 km; km/l; temp. input; temp. output;
pressure; flow rate; total consumption
2)

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This information corresponds to the current state of knowledge. Kistler reserves
the right to make technical changes. Liability for consequential damage resulting
from the use of Kistler products is excluded.

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