EVAP Pressure Sensor

Evap fuel vapor pressure sensor is a kind of pressure sensor based on MEMS technology.

Feature and benefits

The working temperature range is wide, from - 40 ℃ to 130 ℃, with full temperature compensation

High precision relative pressure sensor can detect minimal leakage in the system

With broken line detection, output alarm function

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

Evap is used to measure the pressure in the fuel evaporation system to help reduce gas leakage to the atmosphere.

Operate
Basic principle

The pressure sensitive unit of evap sensor is affected by pressure, which leads to the change of piezoresistance value of Wheatstone bridge, which is converted into voltage signal. The signal is amplified and compensated by signal conditioning circuit to obtain proportional voltage output. The proportional voltage output is proportional to the pressure difference between evaporation system and surrounding atmospheric pressure, which is used to detect leakage in evaporation system.

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
 
130
 
PRESSURE RANGE
P
-3.75
 
3.5
kPa
Customizable
SUPPLY VOLTAGE
Vcc
4.5
5
5.5
V
 
SUPPLY CURRENT
Icc
 
2.9
10
Ma
 
LOAD RESISTANCE
RL
1
 
 
 
NOMINAL OUTPUT
Vout
0.5
 
4.5
V
Customizable
UPPER CLAMPING LEVEL
VCL-HI
 
4.7
 
V
Customizabl
LOWER CLAMPING LEVEL
VCL-LO
 
0.3
 
V
Customizable
OUTPUT PRESSURE ACCURACY
Err
-0.247
-0.348
 
0.247
0.348
kPa
kPa
@10℃~80℃
@-40~130℃
PRESSURE RESPONSE TIME
T
 
2
 
ms