Product details
The sensitive element of the YZB490 differential pressure transmitter is a solid piezoresistive sensitive chip. The spaces between the chip and the two convoluted diaphragms are injected with silicone oil. The differential pressure exerts a force on the convoluted diaphragms at the two ends, squeezing the silicone oil in between which then transmits it to the sensitive chip. And the sensitive chip is connected with signal treatment circuit by conductor wire. The piezoresistive effect of semiconductor silicon material is employed by the product to realize the conversion between differential pressure and electric signal. Due to the good linear relationship between the signal outputted by the Wheatstone bridge on the sensitive chip and the differential pressure, the differential pressure can be measured correctly. It is suitable for measuring differential pressures in various air or liquid pipes of different industries, such as oil, chemical and electrical industries, as well as hydrological sector.
Performance Index
Range code |
0A |
02 |
03 |
07 |
08 |
09 |
10 |
12 |
13 |
Unit |
kPa |
MPa |
|||||||
Measuring range |
0~35 |
0~70 |
0~100 |
0~200 |
0~350 |
0~700 |
0~1 |
0~2 |
0~3.5 |
Positive overpressure allowed |
70 |
150 |
200 |
400 |
700 |
1400 |
2.0 |
4.0 |
7.0 |
Negative overpressure allowed |
35 |
70 |
100 |
200 |
350 |
700 |
1.0 |
1.0 |
1.0 |
Static pressure |
≤20MPa |
Minimum |
Typical Value |
Maximum |
Unit |
||
Accuracy |
0.5 |
±%FS |
|||
Zero temperature error |
≤200kPa |
0.75 |
1.25 |
±%FS, reference 25°C |
|
>200kPa |
0.5 |
0.75 |
|||
Temperature error at full range |
≤200kPa |
0.75 |
1.25 |
||
>200kPa |
0.5 |
0.75 |
|||
Long-term stability |
≤200kPa |
0.5 |
±%FS / year |
||
>200kPa |
0.2 |
Static pressure impact |
0.05 |
±%FS, each 100kPa |
Compensation temperature |
0~50 |
°C |
Working temperature |
-10~80 |
|
Storage temperature |
-40~120 |
Electrical Performance
Power supply: two wires 15V~28V DC three wires 15V~28V DC
Output signal: two wires 4mA~20mA DC three wires 0/1V~5V DC, 0mA~10/20mA DC
Electrical connection: connector or seven-core cable with response time (10%~90%):≤1ms, insulation resistance: 100MΩ, 50VDC
Structural material
Shell: Stainless steel 1Cr18Ni9Ti
Convoluted diaphragm: Stainless steel 316L O-shaped sealing ring: Fluororubber Infused liquid: Silicone oil pressure connection: G1/4 internal thread
Ambient conditions
Vibration: the change ≤1% after vibration under 3gRMS, 30Hz~2000Hz impact: the change ≤1% after impact under 100g, 10ms
Medium: liquid or gas compatible with the structure material
Outline Structure
(Unit: mm)
Electrical connection
Connector connection Cable connection
The guard grating shall be provided with this intrinsic safety explosion-proof transmitter to constitute an intrinsic safety explosion-proof system. The electrical connection is shown in the following figure:
≤35kPa Transmitter explosion-proof level and parameters: |
Guard grating explosion-proof level and parameters: |
|
ExiaII BT6 Ga |
ExiaIIC |
|
Ui: 28V DC Ii:93mA DC |
Uo: 28V DC Io:93mA DC |
Po: 0.65W |
Li: 0.1mH Ci: 0.29μF Pi: 0.65W |
||
>35kPa Transmitter explosion-proof level and parameters: |
Guard grating explosion-proof level and parameters: |
|
ExiaII CT6 |
ExiaIIC |
|
Ui: 28V DC Ii:93mA DC |
Uo: 28V DC Io:93mA DC |
Po: 0.65W |
Li: 0.1mH Ci: 0.044μF Pi: 0.65W Selection Guide |
YZB490 |
Piezoresistive Differential-pressure Transmitter |
||||||||||
Code |
Measuring range |
||||||||||
X[0~X] kPa or MPa |
Range code |
Measuring range kPa |
Allowable overpressure kPa |
Range code |
Measuring range MPa |
Allowable overpressure MPa |
|||||
Positive |
Negative |
Positive |
Negative |
||||||||
0A |
0~35 |
70 |
35 |
09 |
0~0.7 |
1.4 |
0.7 |
||||
02 |
0~70 |
150 |
70 |
10 |
0~1.0 |
2.0 |
1.0 |
||||
03 |
0~100 |
200 |
100 |
12 |
0~2.0 |
4.0 |
1.0 |
||||
07 |
0~200 |
400 |
200 |
13 |
0~3.5 |
7.0 |
1.0 |
||||
08 |
0~350 |
700 |
350 |
||||||||
Code |
Output signal |
||||||||||
E |
4mA~20mA DC |
||||||||||
F |
1V~5V DC |
||||||||||
J |
0V~5V DC |
||||||||||
Q |
0mA~10mA DC |
||||||||||
U |
0mA~20mA DC |
||||||||||
V |
0V~10V DC |
Code |
Structural material |
|||||||||
Isolation diaphragm |
Interface |
Shell |
||||||||
22 |
Stainless steel 316L |
Stainless steel |
Stainless steel |
|||||||
24 |
Stainless steel 316L |
Stainless steel 316L |
Stainless steel 316L |
|||||||
Code |
Additional function |
|||||||||
C4 |
G1/4 internal thread pressure interface |
|||||||||
B1 |
Connection by 4-core connector |
|||||||||
B2 |
Cable connection with cable length of 1.5m |
|||||||||
M3 |
3 1 LCD digital display meter (with only 4mA~20mA DC output) 2 |
|||||||||
M4 |
3 1 LED digital display meter (with only 4mA~20mA DC output) 2 |
|||||||||
i |
The intrinsic safety explosion-proof type ExiaⅡCT6(>35kPa) /ExiaⅡBT6Ga(≦35kPa) |
|||||||||
T |
Marine product |
|||||||||
YZB490 [0~100]kPa E 22 C4B2 complete model and specification |
Notes for Selection
1. It is recommended to install three valve groups between the measuring point and the transmitter to ensure that the measured medium is stressed into the positive and negative chambers of the transmitter slowly and evenly, so that the reliable operating of the transmitter can be ensured.
2. It is recommended to make the pressure interfaces at the two ends horizontal upon installation, so as to minimize the impact of installation on the product.
3. Upon model selection, please consider that the static pressure at the measuring point shall not be over 20MPa and the overpressure on the positive and negative chambers of the transmitter shall not be over the specified value of the product.
4. During ordering, please note that the M3 and M4 digital display meters are not included for explosion-proof product and marine use product.
5. The digital display meter document is included in the document for YZB480 pressure transmitter.
6. For any special requirement, please feel free to contact us and show it in the purchase order.
http://www.youchurtsensor.com/