Intelligent Electro-Pneumatic Positioner

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Intelligent Electro-Pneumatic Positioner

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Description

Features

Pneumatic	Supply Air Pressure	0.14～0.7 MPa
	Valve Leakage	<0.6L / H
	Air Consumption	<36L / H
	Air Supply	According to ISO8573-1 Size and density of particulates: Class 4 Oil concentration: Class 4 Dewpoit:Class 4 or 10K below operating temperature
Input/Output	Actuator	Single acting, Double acting
	Travel Range	Linear: 10~100mm(10-20mm,1:6 transmission ratio is optional); Rotation angle:30~105º
	Input Current	4~20mADC,Minimum input current:>3.8mA,split range start and end point adjustable
	Feedback Output	4～20mA DC
	Digital Input	1 dry contract
	Digital Output	Electronic switch:2 channel
	PiezoValves Switch Time	Average failure free time: >2billion
	Output Characteristic	Linear, 1:30, 30:1, user defined (20points)
	Communication	HART
Display	LCD	2×7 digitals, dimension:22×38mm
Display	Pressure Gauge	Optional, displaying the in and out pressure
Operate	Self Tuning	Automatic calibrate the Zero and Span, dead band
	Self Diagnose	Show the value of input current , travel time, dead band, etc.
	Manual	3 keys on the front panel
Precision	Dead Zone	0.1~10%adjustable
	Linearity	≤±0.5% FS
	Hysteresis	≤0.5% FS
Environment	Ambient Temperature Range	General type:-(40~80)°C
	Ambient Temperature Range	Intrinsic safety: -40~+50°C(T6) /65°C(T5) /80°C(T4)
	Relative Humidity	5～95%RH
	Vibration Resistance	15～150Hz@2g
	IP ProtectionLevel	IP65（According to customer needs）
	Explosion-Proof Type	Exia IIC T4~T6 Ga, ExiaD 20 T80/T95/T130
Appearance	Weight	2 .0 kg
	Dimension	170×96×92mm
	HousingMaterial	AluminiumDiecasting

RG intelligent valve positioner is a two-wire system instrument made by RG. The positioner is a control accessory of pneumatic valve. It is widely used in automatic control systems of petroleum, chemical, electricity, metallurgy, paper and pulp industry and other fields.

RG intelligent valve positioner accepts the 4~20mA valve setting analog signal from the control system. This valve setting value will be converted by an analog to digital converter (ADC) to digital signal then input to CPU. At the same time,instrument gets the actual valve position from location sensors. The two signals are compared by the instrument software so as to control the intake and exhaust of the pneumatic actuator, and drive the valve to reach set point (refer to Figure2-1).

RG intelligent valve positioned is based on micro process or technology. It can overcome friction and the imbalance power on the control valve well, and improve the response speed of control valve, which makes the position set rapidly and accurately. It is not only able to completely substitute conventional valve positioner, but also is able to directly access HART network, exchanging information between control system and positioner.