GPF/DPF Differential Pressure Sensor

DPF/GPF differential pressure sensor is a kind of sensor designed based on MEMS technology to measure the pressure difference between two sides of the object.

Feature and benefits

The working temperature range is wide, from - 40 ℃ to 140 ℃, with full temperature compensation

Fluorinated gel encapsulation protection to adapt to poor exhaust environment

Excellent over and back pressure protection, back pressure - 24 V, over voltage 28 v

Appearance and customer interface can be compatible with Sensata products

SMT for EMA fabrication process

According to customer requirements, a variety of ranges can be customized

Application

The differential pressure sensor outputs the differential pressure signal at both ends of the particulate filter in the exhaust system for ECU to select the appropriate regeneration time of the particulate filter for exhaust emission management, which can reduce the particulate matter by up to 90%.

Operate
Basic principle

The pressure sensitive unit of the pressure difference sensor is affected by the pressure change at both ends of the particulate trap, resulting in the change of the piezoresistance value of the Wheatstone bridge, which is converted into a voltage signal. The signal is amplified and compensated by the signal conditioning circuit, and the pressure difference signal is sent to the ECU. The ECU judges the accumulation degree of particles in the trap according to the pressure difference, and determines the regeneration trigger time.

Connection options

Customized to customer choice of connection system

Packaging Options

Custom packaging can be provided to meet any need, please contact KESENS Engineering for details.

Functional Characteristics
PARAMETER
NOTE
MIN.
NOM.
MAX.
UNITS
COMMENT
TEMPERATURE RANGE
T
-40
 
140
 
PRESSURE RANGE
P
-20
 
80
kPa
Customizable
SUPPLY VOLTAGE
Vcc
4.5
5
5.5
V
 
SUPPLY CURRENT
Icc
 
2.4
10
Ma
 
LOAD RESISTANCE
RL
1
 
 
 
NOMINAL OUTPUT
Vout
0.5
 
4.5
V
Customizable
UPPER CLAMPING LEVEL
VCL-HI
 
4.7
 
V
Customizable
LOWER CLAMPING LEVEL
VCL-LO
 
0.3
 
V
Customizable
OUTOUT PRESSURE ACCURACY
Err
-1.5
-2.5
 
1.5
2.5
kPa
kPa
@ 0℃~80℃
@ -40℃~140℃
PRESSURE RESPONSE TIME
T
 
2
 
ms