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Liquid Filled Pressure Transmitter MS321B
Liquid Filled Pressure Transmitter MS321B
Supplier Info
[China Supplier]
Contact Person : Ms. Moshu Judy
Tel : 86-029-89198955
Fax : 86-029-87305086
Product Detail
1)0~200mH2O or 0~2MPa 2)Anti -lightning 3)High Accuracy and Quality 4)Class III lightning design

• • • Overview of Product • • •

MS321B lightning liquid level transducer measures the liquid level using the principle that the liquid static pressure is 

directly proportion to the liquid height. This series of product is specially designed for the thundering areas in the 

Southern China using advanced silicon piezoresistive sensitive element made by German HELM Company, 

supported with HELM patent lightning device. It is suitable for hydrographic and water conservancy 

liquid level measurement in the river, lake, and reservoir. It has successfully been 

applied in many hydrographic industries.

  

  • • • Technical Data of Product • • •

Measuring range

0 ~ 0.5m…200mH2O or 0 ~ 5KPa…2MPa

Permissible over pressure

Two times of full–scale pressure

Medium to be measured

The gas or liquid compatible with 316 stainless steel,  

corrosion–proof type subject to special conditions

Overall accuracy

(Linear, repeatability, lagging)

 ± 0.25% FS  

 ± 0.5% FS

 ± 1% FS

Long-term stability

Typical:  ± 0.1% FS/Year     

Maximum:  ± 0.2% FS/Year

Range of operating temperature

Integrated: - 20°C~70°C

Split (Inserted): - 20°C~80°C

Range of compensating temperature

Integrated: - 10°C~55°C

Split (Inserted): - 10°C~70°C

Zero point temperature drifting

Typical:  ± 0.02% FS / °C

Typical:  ± 0.05% FS / °C

Sensitivity temperature drifting

Typical:  ± 0.02% FS / °C

Typical:  ± 0.05% FS / °C

Range of power supplying 

12 ~ 36V DC( generally 24V DC)

Signal output

4~20mA / 1 - 5V DC / 0~5V DC

Load resistance 

≤(U - 12) / 0.02Ω

Material of structure

Enclosure: Stainless steel 1Cr18Ni9N

Membrane: Stainless steel 316L

Sealing: Fluorubber

Cable: Φ7.2mm PVC, special

Insulation resistance

100MΩ, 500V DC

Protection degree

1P68

  

Response time

≤2ms

Safe explosion - proof

Ex ia II CT5

Lightness degree

Class III lightning design (10000V / 5000kA); 

( Optional 20000V / 10000A) under special condition 

Weight

Approx. 250g

• • • Features of Product • • •

1.Simply installation, easy operation, strong interchangeability;

2.Power supplied from 12V battery under special condition to solve the problem of power supplying in the field.

3.Designed with lightning device and intrinsically safe explosion proof capacity and may apply to all kinds of hazardous sites.

4.The high quality sensor is designed with high sensitivity and fast response to accurately reflect tiny change 

   of dynamic or static liquid level, with high accuracy of measurement.

5.Fine and unique zero point, temperature drifting, non linear compensation to ensure good accuracy and 

   long term stability of the instruments and meters with the working condition. 

• • • Application of Product • • •

It applies to river, lake, reservoir, and overhead water tank, especially for hydrographic and water conservancy liquid level 

measurement in the thundering areas in the Southern China and Mountainous area in the Northern China.

Liquid Filled Pressure Transmitter MS321B

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