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Unit Meter
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Temperature Meter
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Pressure Meter
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Flow Meter
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Analysis Meter
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Level Meter
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Weighing Meter
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Tachometer
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Physical Meter
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Marine Meter
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Regulation Meter
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Supply Unit
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Logic Switch
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Dashboard Cabinet
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Display Record
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Actuator
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Pneumatic Valve
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Electric Valve
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Control System
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Verifying Attachment
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Complete Equipments
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Instrument Accessories
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Instrument Component
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Home> actuator >> pneumatic actuator accessories >> ZPD-2121-B electric-pneumatic valve positioner

Product number:MC-000054004236
Product name:electric-pneumatic valve positioner
Product Type:ZPD-2121-B
Product nameplate:SAIC
Project Category:actuator >> pneumatic actuator accessories >>
Manufacturer:Shanghai Automation Instrumentation Co., Ltd.
Sales unit: Shanghai Automation Instrumentation Marketing Center
Information download:Click to enter the download page

Introduction
Specifications

positioner is auxiliary instruments used with pneumatic adjusting valve, receive DC signal from electric regulating instruments and convert the signal to corresponding pneumatic signal, control adjusting travel. By the action of feedback system , make the travel and signal change proportionally, then ensure the correct position of valve. If used with positioner, can overcome the friction of valve stem, speed up the movement of valve. Widely used in oil、chemical、metallurgy、power station and textile automation system of industries
Structure principle

Mainly made up of shell, torque motors, zero body, nozzle - tailgate, junction box

Designed according to torque balance principle

Series	Model	Input signal	Output pressure	Air pressure	Explosion-proof type
Series	Model	mA.DC	kpa	Mpa	（Certificate No.）
Ⅲ type	ZPD－1111－B	4～20	20～100	0.14	deⅡBT4(GyB89-187) iaⅡCT5(GyB89-188)
	ZPD－1112－B	4～20	40～200	0.26	deⅡBT4(GyB89-187) iaⅡCT5(GyB89-188)
	ZPD－1121－B	4～12 12～20	20～100	0.14	deⅡBT4(GyB89-187)
	ZPD－1122－B	4～12 12～20	40～200	0.26	deⅡBT4(GyB89-187)
	ZPD－1111	4～20	20～100	0.14	General type
	ZPD－1112	4～20	40～200	0.26
	ZPD－1121	4～12 12～20	20～100	0.14
	ZPD－1122	4～12 12～20	40～200	0.26
	ZPD－2111－B	0～10	20～100	0.14	deⅡBT4(GyB89-187)
	ZPD－2112－B	0～10	40～200	0.26
	ZPD－2121－B	0～5 5～10	20～100	0.14
	ZPD－2122－B	0～5 5～10	40～200	0.26