SPH intelligent electric pneumatic valve positioner is an intelligent instrument product independently developed by Shanghai Automation Instrument Co., Ltd. It is based on microprocessor technology and is used for controlling pneumatic linear or angular actuators, and can achieve HART communication function. The auxiliary function can achieve 4-20mA position feedback of valve position. In the pneumatic system, it adopts piezoelectric technology, completely overcoming the drawbacks of traditional nozzle baffle structure, improving anti vibration ability, and saving gas source consumption. This product can not only be used with various types of pneumatic actuators, but also eliminates the need for accessories such as travel switches and valve position transmitters. It is a new generation valve positioner that fully meets the requirements of intelligent instruments for fieldbus control systems.
major function
◎ LCD display function
◎ Self diagnostic function
◎ Parameter configuration function
◎ Travel characteristic correction function
◎ Position feedback function
◎ Supports HART communication
Basic parameters
Input signal: 4~20mA analog signal
Gas source pressure: 0.14-0.6MPa
Gas consumption: 0.04Nm3/h (under standard conditions, when the gas source pressure is 0.14MPa)
Usage environment:
◎ Environmental temperature:- 30～+70℃
Relative humidity: 5% to 95%
Tracheal interface: NPT1/4 (standard type)
Shell protection level: IP65
Travel: 10mm~100mm (straight travel)
Communication interface: Supports HART communication on 4-20mA
performance index
Input load voltage: 6.2V
Input impedance: 310 ± 10 Ω
Accuracy level: ± 1.0%
Return difference: ± 1.0%
Dead zone: 0.4%~10% (adjustable)
Anti electromagnetic interference:
GB/T17626.2-1998 Electromagnetic Compatibility Testing and Measurement Techniques - Electrostatic Discharge Immunity Test
GB/T17626.3-1998 Electromagnetic Compatibility Testing and Measurement Techniques - Radio Frequency Electromagnetic Field Radiation Immunity Test
GB/T17626.4-1998 Electromagnetic compatibility testing and measurement techniques - Electrical fast transient burst immunity test
GB/T17626.5-2008 Electromagnetic Compatibility Testing and Measurement Techniques - Surge (Impulse) Immunity Test
GB/T17626.8-1998 Electromagnetic Compatibility Testing and Measurement Techniques - Power Frequency Magnetic Field Immunity Test
Ordering Notice
Order data: Order number
SP electric pneumatic valve positioner: SP *—****—**
Standard design
Basic module (with display, keyboard, configuration functions) - D
Based on HART communication - H
Based on Profibus PA communication - P
Based on FF communication - F
Based on EPA communication - E
Design Series
Basic product -1
Improved Type -2
actuator
Single action -0
Dual action -1
explosion-proof
None -0
Intrinsic Safety Type - I
Output/Safe Location
Single action:
When the signal is cut off, the gas is discharged by the actuator (safety reset) -1
When the signal is interrupted, the actuator locks in the current position -2
Dual effect:
When the signal is cut off, the gas is discharged by the actuator (safety reset) -5
When the signal is interrupted, the actuator locks in the current position -6
Analog/digital feedback module
Without -0
Plug in analog feedback, signal range 4-20mA, two-wire system -1
Digital feedback, maximum and minimum limits -2
Emergency Action Module -3
Plug in analog feedback, signal range 4-20mA, two-wire system with digital feedback, maximum and minimum limit -4
Plug in analog feedback, signal range 4-20mA, two-wire system with emergency action module -5
Mechanical limit switch
Without -0
Mechanical limit feedback, maximum, minimum -1
With SJ2-SN (NC or logic "1") -2
With SJ2-SIN (NO or logic "0") -3
24V/AC micro limit switch -5