electric-pneumatic valve positioner

Model：ZPD series
Category：electric-pneumatic valve positioner
origin：SHANGHAI

SHANGHAI AUTOMATION INSTRUMENTATION CO. LTD. NO.?11?AUTOMATION INSTRUMENTATION FACTORY Shanghai Yi Electric Actuator SHANGYI ELECTRIC ACTUATOR SHANGYI BRAND SHANGZIYI THEMOCOUPLE AND PRESSURE GAUGE Electric-pneumatic valve positioner

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ZPD series electric-pneumatic valve positioner

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

SHANGHAI AUTOMATION INSTRUMENTATION CO. LTD.

NO. 11 AUTOMATION INSTRUMENTATION FACTORY

Shanghai Yi Electric Actuator

SHANGYI ELECTRIC ACTUATOR

SHANGYI BRAND

SHANGZIYI THEMOCOUPLE AND PRESSURE GAUGE

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

Gas consumption: ≤1000L/h

Resistance : Ⅲ series： Flameproof Increased Safety Complex and general 300±100Ω

intrinsically safe type 450±10Ω

Ⅱ series: 1200±20Ω

Basic error: ≤±1%

Hysteresis : ≤1%

Dead band : ≤0.4%

Travel range of actuator : 10～60mm

Isolated resistance : ≥20MΩ

Environment temperature: －25～55℃

Relative humidity : 5%～100%

Weight: 5㎏

Connection thread of cable: M20×1.5