• • • 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