1、 Purpose:

The DKJ-B type angular stroke electric actuator is the actuator unit in the DDZ type electric unit combination instrument. It receives signals from the regulating unit (or computer) and automatically operates the actuator to complete the regulating task. It is widely used in industries such as power plants, chemical, petroleum, metallurgy, building materials, heating, light industry, water treatment, etc. It can output torque and 90 degree rotation angle.

The DKJ-B electric actuator adopts an explosion-proof structure with an explosion-proof rating of dIIBT3, and can be used in specified explosive environments (refer to GB3836 · 1-2000 "General Requirements for Explosion proof Electrical Equipment for Explosive Environments" for the scope of use).

The actuator position transmitters produced by our company all use the latest sensing components, referring to the latest circuits of foreign companies. They integrate power transformers, rectification, voltage regulation, power amplifiers, and constant current into one module (M) to improve the reliability and stability of the actuator, making the system safer and more reliable.

　　2、 Main technical performance

1. Output signal: Type II 0-10mA, DC; Type III 4-20mA, DC;

Input signal: Type II 0-10mA, DC; Type III 4-20mA, DC;

2. Input channels: Three

3. Input resistance: Type II 200 Ω; Type III 250 Ω

4. Output torque: see the table above

5. Output shaft rotation time of 100 ± 20 seconds per revolution

6. Effective rotation angle of output shaft 90 º

7. Dead zone: Type II ≤ 150 µ A; Type III ≤ 240 µ A

8. Damping characteristics: no oscillation

9. Basic error: ± 2.5%

10. Return difference: 1.5%

11. Power supply voltage: 220V (+22V, -33V) 50Hz

12. Usage environment:

(1) Operating environment temperature: amplifier: 0~+50 ℃; Actuator: -25~+55 ℃

(2) Relative humidity of the operating environment: amplifier: 10% to 70%, actuator: ≤ 95%

(3) The air is allowed to contain explosive gases with a transmission capacity not higher than Class II, Grade B, Group T3, but not corrosive gases.

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