Product catalog
- HM10 High - accuracy Pressure Sensor
- HM20 General - type Pressure Transducer Description
- HM22 High - accuracy Pressure Transducer
- 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
電話：400-063-9658
手機：18951963348同微信號
傳真：025-52150140
郵箱：njhongmu@hmsensor.com
HM27 Vacuum / Absolute Pressure Transducer
Description
HM27 series of vacuum / absolute pressure transducer is a new series of product specially used for vacuum measuring control released in China by German HELM, which fully has solved the problem of difficult vacuum measurement. This series of product has three variants i.e. HM27G negative pressure transducer, HM27A absolute pressure transducer, HM27CA capacitor thin – membrane absolute pressure transducer, which has widely been used for such fields as pharmaceutical, medical equipment, airspace and aerospace, scientific research, leakage detection, accessories of automation equipment. HM27G negative pressure transducer adopts HELM mono – crystalline silicon thick – membrane sensor, provided with high – accuracy signal processing circuit, with performance stability and reliability, which has solved such disadvantages of domestic diffused silicon – type negative vacuum product as unstable signal and short service life. The normal ranges are 0 ~ 100KPa and 0 ~ 50KPa etc.
Features of Product
☆ Fully provided with German HELL made high – accuracy sensing elements, with maximum accuracy up to 0.1% FS
☆ Stable and reliable performance, may be continuously operated for a long time, with good long – term stability
☆ May apply to measure corrosive medium under special requirements
☆ Strong overloading immunity ☆ Fast response
☆ May be used for hazardous site, with intrinsically safe type Ex ia II CT5
☆ Structural diversification, design may be customized at the customer’s special requirements.
Application of Product
Details
HM27A negative pressure transducer adopts such new high technologies of German HELM as advanced absolute pressure chip, temperature automatic compensation, and normalized circuit commissioning etc. to expand the absolute pressure range to 5KPa, as a minimal, and to greatly enhance the overall accuracy of the product. This variant features advanced technology, superior performance, reliable quality, small dimensions. It features more advantages and high ratio of performance to cost comparing with the same type of domestic absolute pressure product. |
Technical Data
Medium to be measured | The gas or liquid, and compatible with 316 stainless steel | |||
Type of pressure | Negative gauge pressure (G), silicon – type absolute pressure (A), capacitor thin – membrane absolute pressure (CA) | |||
Overloading capacity | Two times for negative gauge pressure, several dozens to several hundred times for micro - scale absolute pressure | |||
Measuring range | Negative gauge pressure: 0 ~ 5KPa…-_50KPa…-100Kpa | |||
Overall accuracy | ± 0.1% FS | ± 0.25% FS | ± 0.5% FS | |
Long – term stability | Typical: ± 0.1% FS / year | Maximum: ± 0.1% FS / year | ||
Range of operating temperature | -20～+80℃ | |||
Range of Compensating temperature | -10～+80℃ |
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Ambient temperature | -20～+80℃ |
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Zero point temperature drifting | Typical: ± 0.01% FS / ℃ | Typical: ± 0.15% FS / ℃ | ||
Sensitivity temperature drifting | Typical: ± 0.01% FS / ℃ | Typical: ± 0.15% 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 | |||
Enclosure protection degree | Plug type (IP65); cable type (IP67) | |||
Safe explosion – proof | Ex ia II CT5 | |||
Tolerance of vibration | ≤ ± 0.01% FS(Axles X, Y, and Z, 200Hz / g) | |||
Resolution | Infinite small (theoretical), 1 / 100000 (general) | |||
Response time (10% ~ 90%) | ≤1ms | |||
Product selection
HM27 | Vacuum / Absolute Pressure Transducer |
| Guideline of Selection | Vacuum / Absolute Pressure Transducer | ||||||||||
| Type of pressure | Gauge pressure (G, may not be indicated); absolute pressure (A), capacitor thin – membrane absolute pressure (CA) | ||||||||||||
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| Range | Measuring Range | |||||||||||
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| 0 ~ X KPa or 0 ~ X MPa | ||||||||||||
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| Code | Overall accuracy (linear + repeatability + lagging) | ||||||||
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| 1 | ± 0.5% FS | ||||||||
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| 2 | ± 0.25% FS | ||||||||
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| 3 | ± 0.1% 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 DC (12 ~ 36V DC) | ||||||
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| V2 | 0 ~ 5V DC (12 ~ 36V DC) | ||||||
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| V3 | 0.5 ~ 4.5V DC (12 ~ 36V DC) | ||||||
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| Code | Additional functions | ||||
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| F1 | M20 x 1.5 external thread | ||||
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| F2 | G 1 / 4 external thread | ||||
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| F3 | Clamped type | ||||
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| F0 | Special | ||||
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| W1 | Cable type (IP67, 2m) | ||||
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| W2 | Socket type (IP65, DIN 43650) | ||||
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| W3 | Airspace and aerospace plug | ||||
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| P | Flushed membrane type | ||||
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| E | Intrinsically safe explosion - proof type Ex ia II CT5 | ||||
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HM27 A( 0 ~ 10KPa) |
| — 1 | — A1 | — F1 | — W2 Vacuum / Absolute Pressure Transducer | |||||||||
Tips of Selection
- The medium to be measured shall be compatible with the material contacting with the product.
- 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.
- Please contact us in case of the other special requirements and clearly indicate them when placing an order.
