ChangShu Huier Petroleum & Chemistry Industrial Instrument Co.,Ltd
Address: Yangzijiang Road ,Changshu Economic Development Zone, Changshu City,Jiangsu Province
Tel: +86 138 6260 8564
Contact: Allen Qiu
WhatsApp: +86 138 6260 8564
WeChat / Skype: qiuallen64
1. General Informaion
HIC is electric-pneumatic valve positioner, which can be used in linear travel and angle travel actuator. It is a two-wire system device. Its power supply comes from 4—20mA input signal. The actuator can be single-action (spring recovery) or double-action (pneumatic open or pneumatic close).
Ø The movement of actuator drives the resetting shaft of the positioner, passes on to the position sensor, then be transformed to electrical signal.
Ø The inputted 4—20mA signal and actual position are passed on to CPU through A/D transforming. Microprocessor uses these data to calculate the control deviation by applying advanced algorithm, and drives the I/P module through PWM digital signal.
Ø I/P module is the pneumatic output module of positioner. It includes guiding stage and simulative 3/3 slide valve assistant stage. The guiding stage transforms electrical signal into air pressure to drive the actuator through nozzle flapper and electromagnetic coil.
2. Technical Parameters
1. Input signal:4—20mA, it can be set as split-travel control input according to user’s
requirement. The split travel range can be set between 20—100%.
2. Simulate feedback signal: 4-20mA DC [24V DC connect load in series in the power supply circuit (ampere meter).
3. Output switch signal supply voltage: 24VDC
4. Air supply:
Instrument air source: oil-free, water-free, dust-free. (clean class: particle size less than 5 um, particle density less than 5mg/m3.
Oil content: consistence less than 1mg/m3, pressure point less than operating temperature.
Air supply pressure: 0.14-0.7Mpa (note: do not exceed the maximum operating pressure).
5. Air consuming: ＜0.03kg/h (nothing to do with air supply pressure)
6. Function direction:
Forward direction: signal 4—20mA＝position 0—100％
Reverse direction: signal 20—4mA＝position 0—100％
7. Characteristic curve:
1) Linear equal percentage
8. Electric current sampling precision: ≤0.1%
9. Fine adjustment range: 0.3％—10％ adjustable
10. A/D conversion sampling rate: 5ms
11. Quick closing range value: locating signal range 0-20% (if the value is lower than the setting value,
the positioner will drive the actuator to the closing position immediately)
12. Environment adaptability:
Environment temperature: －20～70℃ work
Environment temperature: －30～85℃ storage, transportation
Relative humidity: ＜75％ (short time 95%) no condensation phenomenon
13. Anti-explosion grade: plant essential safety type
Anti-explosion standard: ExibⅡCT6
International safety certification: TUV
14. Housing material: aluminium
15. Electric connection: G1/2
16. Pneumatic connection: NPT1/4
17. Weight: 2Kg
18. Dimension: 245x90x1
3. Order Information
Note: Special specifications and requirements can be ordered separately