- 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
HM1151 Capacitor -type Differential Pressure Transducer
HM1151 capacitor -type differential pressure transducer adopts advanced technology and equipment that we introduced from the foreign countries, of which key raw material, elements and components are imported and strictly assembling and commissioning has been made for the complete machines. It features advanced design principle, full specifications and variants, and simple installation and operation etc. The intellectual series has been researched and developed lately are a kind of intellectual transducer more suitable condition of China, featuring very strong operating value. This series of product has widely been used for such industries as petroleum, chemical, metallurgical, electric power, food, paper making, medical and pharmaceutical, and mechanical manufacturing etc.
Features of Product
Application of Product
☆ High accuracy, good stability
? ? ? Working Principle? ? ?
The process pressure is transferred to the central measuring membrane of δ chamber through the isolating membrane on both sides or one side. The central membrane is a tensioned elastic element, which may generate corresponding deformation displacement for the pressure difference on the both side applied on it, of which displacement is direct proportion to the pressure difference. The maximum displacement is approximately 0.1mm. This displacement is converted into a differential capacitance formed on the capacitor pole board and the differential capacitance is converted into 2 – wire 4 ~ 20mA signal output through electronic circuit.
HM1151 Capacitor -type Differential Pressure Transducer
? ? ? Functional Indicators? ? ?
Liquid, gas, or vapor
Range of measurement:
0 ~ 0.125KPa ~ 40MPa
4 ~ 20mA
Power supply of energization
12 ~ 45V DC (24V DC generally)
Related to the power supply of energization. The load impedance RL has a relationship to the voltage of the power supply: RL ≤50 (VS – 12) Ω
Pointer type with an indication 0 ~ 100% scale, LCD display (0 ~ 100% linear) and square root indication 0 ~ 10 scale.
Explosion – proof:
a. Explosion – isolating type d II BT4
b. Intrinsically safe type in II CT6
Measuring scale and zero point:
Externally and continuously adjustable
Positive and negative immigration:
The lower and upper limit of the scale shall not exceed the scale limit after positive and negative immigration.
Maximum positive immigration: 500% of the minimum measuring scale
Maximum negative immigration: 600% of the minimum measuring scale
Range of temperature:
The range of operating temperature for the amplifier: -29 ~ +93℃ (: -25 ~ +70℃ for LT type)
The measuring element filled with silicon oil: : -40 ~ +104℃
Flange –type transducer filled with high – temperature silicon oil: : +15 ~ +315℃; that filled with general silicon oil: : -40 ~ +150℃
Static pressure and overloading pressure:
4, 10, 25, 32MPa
Relative humidity (RH) 0 ~ 100%
Volume intake capacity:
Damping (step response):
Continuously adjustable, between 0.2s ~ 1.67s generally when filled with silicon oil.
2s, preheating is unnecessary.
± 0.25% FS; ± 0.5% FS
None (≤ 0.1%)
Not exceeding the absolute value of the basic tolerance for the maximum scale within six months.
Influence of temperature:
Under the maximum scale: zero position tolerance is ± 0.1% / 55℃, the total tolerance is ± 0.15% / 55℃.
Under the minimum scale: zero position tolerance is ± 0.1% / 55℃, the total tolerance is ± 0.2% / 55℃.
Influence of vibration:
On the any axial direction, the tolerance is ± 0.05% / g of the upper limit of the measuring range when the frequency of vibration is 200Hz.
Influence of power supply:
Less than 0.005% / V of the scale output
Influence of load:
The load has no influence to it if the power supply is stable.
Influence of installing position:
0.24KPa zero point tolerance may be generated, as a maximum, but it may be corrective, without influence to the measuring scale.
Isolating membrane: 316LSST, Hastelloy alloy C, MONEL, or tantalum.
Gas exhaust / liquid discharging valve: 316LSST, Hastelloy alloy C, MONEL
Flange and joint: Electroplated carbon steel, 316LSST, Hastelloy alloy C, or MONEL
O – ring contacting medium: NBR, fluorubber
Oil filled: Silicon oil or inertia oil
Enclosure of electronic parts: Low – copper aluminum alloy
Pressure – leading connecting part:
The connecting screw hole on the pressurized vessel or chamber is 1 / 4 ~ 18NPT, the connecting screw hole on the pressure – leading joint is 1 / 2 ~ 14NPT.
Connecting hole of the signal wire:
G1 / 2
Approximately 5.4kg (excluding accessories)
The flanged joints, gas exhaust valves and liquid discharging valves and one book of instruction manual have been provided for all the variants in the factory before delivery.