Description
Product introduction:
Model: ZPD-2121-B
Name: electric-pneumatic valve positioner
Manufacturer: Shanghai Automation Instrumentation Co., Ltd.
Application: ZPD-2121-B electric-pneumatic valve 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 |
|
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 |
40～200 |
0.26 |
|||
|
ZPD-1121-B |
4～12 12～20 |
20～100 |
0.14 |
deⅡBT4(GyB89-187) |
|
|
ZPD-1122-B |
40～200 |
0.26 |
|||
|
ZPD-1111 |
4～20 |
20～100 |
0.14 |
General type |
|
|
ZPD-1112 |
40～200 |
0.26 |
|||
|
ZPD-1121 |
4～12 12～20 |
20～100 |
0.14 |
||
|
ZPD-1122 |
40～200 |
0.26 |
|||
|
|
ZPD-2111-B |
0～10 |
20～100 |
0.14 |
deⅡBT4(GyB89-187) |
|
ZPD-2112-B |
40～200 |
0.26 |
|||
|
ZPD-2121-B |
0～5 5～10 |
20～100 |
0.14 |
||
|
ZPD-2122-B |
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
Shanghai Automation Instrumentation Co., Ltd.NO. 11 AUTOMATION INSTRUMENTATION FACTORY
Shanghai Yi Electric Actuator
SHANGYI ELECTRIC ACTUATOR
SHANGYI BRAND
