Product catalog
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- HM23 Special Pressure Transducer for Air Conditioner, Refrigerating and Compressor
- HM23Y Special Pressure Transducer for Oilfield and Mining Well
- HM24 Economical Pressure Sensor and Transducer
- HM25 Industrial - type Pressure Transducer
- HM26 Ceramic Capacitor Pressure Transducer
- HM27 Vacuum / Absolute Pressure Transducer
- HM28 Sapphire Pressure Transducer
- HM29 Digital ? Intellectual Pressure / Differential Pressure Transducer
- HM50 Anti - corrosive Pressure Transducer
- HM60 Anti - explosive Pressure Transducer
- HM70 Hygienic Flat - membrane Pressure Transducer
- HM80 High - temperature Pressure Transducer
- HM90 High - frequency Dynamic Pressure Transducer
- HM91 Micro Pressure Sensor and Transducer
Contact Us
南京宏沐科技有限公司
銷售部地址：南京市高鐵南站南廣場(chǎng)
電話：400-063-9658
手機(jī)：18951963348同微信號(hào)
傳真：025-52150140
郵箱：njhongmu@hmsensor.com
HM21F Lightning Liquid Level Transducer
Description
HM21F 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.
Features of Product
☆ Simply installation, easy operation, strong interchangeability;
☆ Power supplied from 12V battery under special condition to solve the problem of power supplying in the field.
☆ Designed with lightning device and intrinsically safe explosion–proof capacity and may apply to all kinds of hazardous sites.
☆ 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.
☆ 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
（防雷液位變送器，防雷液位傳感器，防雷水位傳感器，防雷水位變送器，防雷水位計(jì)）
適用于野外江、河、湖、水庫、高位水箱，尤其是南方強(qiáng)雷區(qū)以及北方高山地區(qū)水文水利的液位測(cè)量
Details
? ? ? 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.
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 | ± 0.25% FS | ± 0.4% FS | ± 1% FS |
Long-term stability | Typical: ± 0.1% FS | Maximum: ± 0.2% FS | |
Range of operating temperature | Integrated: - 20℃～70℃ | Split: - 20℃～80℃ | |
Range of compensating temperature | Integrated: - 10℃～55℃ | Split: - 10℃～70℃ | |
Zero point temperature drifting | Typical: ± 0.02% FS / ℃ | Typical: ± 0.05% FS / ℃ | |
Sensitivity temperature drifting | Typical: ± 0.02% FS / ℃ | Typical: ± 0.05% FS / ℃ | |
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: ￠7.2mm PVC, special | ||
Insulation resistance | 100MΩ， 500V DC | ||
Protection degree | 1P68 |
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Thermal lagging | ± 0.1% FS | ||
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. 500g | ||
? ? ? Features of Product ? ? ?
☆ Simply installation, easy operation, strong interchangeability;
☆ Power supplied from 12V battery under special condition to solve the problem of power supplying in the field.
☆ Designed with lightning device and intrinsically safe explosion–proof capacity and may apply to all kinds of hazardous sites.
☆ 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.
☆ 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.
HM21F | Lightning Liquid Level Transducer |
| Guideline of Selection | Lightning Liquid Level Transducer | ||||||||||
| Range | Measuring Range | ||||||||||||
| 0 ~ X mH2O or 0 ~ X KPa | |||||||||||||
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| Code | Structural form (maximum range of operating scale) | ||||||||||
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| C1 | Integrated: (0 ~ 200mH2O) | ||||||||||
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| C2 | Split: (0 ~ 10mH2O) | ||||||||||
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| C3 | Inserted: (0 ~ 4mH2O) | ||||||||||
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| Code | Overall accuracy (linear + repeatability + lagging) | ||||||||
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| 0 | ± 0.1% FS | ||||||||
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| 1 | ± 0.4% FS | ||||||||
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| 2 | ± 0.25% FS | ||||||||
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| Code | Signal Output (standard power supply of energization) | ||||||
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| A1 | 4 ~ 20mA(12 ~ 36V DC) | ||||||
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| V1 | 1 ~ 5V(12 ~ 36V DC) | ||||||
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| V2 | 0 ~ 5V DC(12 ~ 36V DC) | ||||||
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| Code | Additional functions | ||||
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| F1 | G 1 1 / 2 external thread (split and inserted) | ||||
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| F2 | DN 20 flange (split and inserted) | ||||
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| F0 | Special | ||||
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| E | Intrinsically safe explosion - proof type Ex ia II CT5 | ||||
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HM21F ( 0 ~ 10mH2O) | —C 1 | — 1 | — A1 |
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| — E | Lightning Liquid Level Transducer | |||||||
Tips of Selection
- The medium to be measured shall be compatible with the material contacting with the product. Meanwhile, it is needed to be indicated with density of the medium to be measured under the measuring status (except for water).
- Please indicate when placing an order in case of battery power supplying.
- The F1, F2, and F0 shown as the additional functions are only suitable for split–type liquid level transducer and inserted–type liquid level transducer.
- The code E, an additional functional code for selection, and intrinsically safe explosion-proof Ex ia II CT5 must be power supplied via safety barrier.
- The length of cable shall be L = X m + 1m. Please indicate for extension when placing an order. There are two kinds of cable material. The polyurethane is more flexible with good wear resistance, which may be selectively used. Under the condition without special indication, the PVC cables shall be supplied.
- The corresponding relationship of 1m water column under standard condition ( i.e. 4℃, g = 9.80665 m / s2) shall be 1 mH2O = 0.1kgf / cm2 = 9.8kPa
- Please contact us in case of the other special requirements and clearly indicate them when placing an order.
Product selection
HM21F | Lightning Liquid Level Transducer |
| Guideline of Selection | Lightning Liquid Level Transducer | ||||||||||
| Range | Measuring Range | ||||||||||||
| 0 ~ X mH2O or 0 ~ X KPa | |||||||||||||
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| Code | Structural form (maximum range of operating scale) | ||||||||||
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| C1 | Integrated: (0 ~ 200mH2O) | ||||||||||
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| C2 | Split: (0 ~ 10mH2O) | ||||||||||
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| C3 | Inserted: (0 ~ 4mH2O) | ||||||||||
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| Code | Overall accuracy (linear + repeatability + lagging) | ||||||||
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| 0 | ± 0.1% FS | ||||||||
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| 1 | ± 0.4% FS | ||||||||
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| 2 | ± 0.25% FS | ||||||||
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| Code | Signal Output (standard power supply of energization) | ||||||
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| A1 | 4 ~ 20mA(12 ~ 36V DC) | ||||||
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| V1 | 1 ~ 5V(12 ~ 36V DC) | ||||||
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| V2 | 0 ~ 5V DC(12 ~ 36V DC) | ||||||
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| Code | Additional functions | ||||
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| F1 | G 1 1 / 2 external thread (split and inserted) | ||||
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| F2 | DN 20 flange (split and inserted) | ||||
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| F0 | Special | ||||
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| E | Intrinsically safe explosion - proof type Ex ia II CT5 | ||||
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HM21F ( 0 ~ 10mH2O) | —C 1 | — 1 | — A1 |
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| — E | Lightning Liquid Level Transducer | |||||||
Tips of Selection
The medium to be measured shall be compatible with the material contacting with the product. Meanwhile, it is needed to be indicated with density of the medium to be measured under the measuring status (except for water). Please indicate when placing an order in case of battery power supplying. The F1, F2, and F0 shown as the additional functions are only suitable for split–type liquid level transducer and inserted–type liquid level transducer. The code E, an additional functional code for selection, and intrinsically safe explosion-proof Ex ia II CT5 must be power supplied via safety barrier. The length of cable shall be L = X m + 1m. Please indicate for extension when placing an order. There are two kinds of cable material. The polyurethane is more flexible with good wear resistance, which may be selectively used. Under the condition without special indication, the PVC cables shall be supplied. The corresponding relationship of 1m water column under standard condition ( i.e. 4℃, g = 9.80665 m / s2) shall be 1 mH2O = 0.1kgf / cm2 = 9.8kPa Please contact us in case of the other special requirements and clearly indicate them when placing an order.
