We often purchase DVC6200 transmitters. When asked whether a valve positioner is single acting or double acting, is it necessary? Today we will study the differences and functions between single and double acting. So that we can confirm the product as soon as possible.
1.Can we confirm whether it is single acting or double acting through the complete coding of the nameplate?
We can determine whether a person is single acting or double acting based on the model code.
| Code | Amplifier Type | Type | Description |
|---|---|---|---|
| 5A | Relay C | Single-acting Direct Acting | Only A output driven, spring return actuator |
| 5B | Relay B | Single-acting Reverse Acting | Only B output driven, spring return actuator |
| 5C | Relay A | Double-acting | A and B two independent air pressure outputs, no spring cylinder |
DVC6200HC 5A → Single acting
DVC6200HC 5C → Double acting
2. Check the number of pressure gauges on the front to confirm whether they are single acting or double acting?
Double acting: Panel with 3 pressure gauges (supply, output A, output B), 2 independent pneumatic output ports A+B
Single function: The panel only has 2 pressure gauges (gas supply+single output), using only one of A or B, and the other is blocked/unused
3、 Check the pneumatic amplifier (remove the side chamber cover)
Direct differentiation of DVC6200 amplifier relay models:
Relay A (A amplifier)=double acting
Internal dual amplification (can be observed through internal amplifier), simultaneously outputting A and B to hedge against air pressure
Relay B/Relay C (B/C amplifier)=single acting
Single channel amplification, the other channel only exhausts, unable to simultaneously output two pressures
4.Use a hand reader to quickly confirm the basic parameter information of the locator.
We can quickly confirm single acting and double acting through the above methods. Finally, we can also confirm whether the DVC6200 locator is single acting or double acting through communication using a handheld device. If you have a hand reader, you can quickly confirm. Handwritten devices can quickly confirm many parameter contents, basic information of locators, and functional settings.
We can provide other Fisher products such as DVC6200 mentioned above. If you are interested in our products. Looking forward to your inquiry.
Introduction of Xi ‘an Lilu Trading Co., LTD
Xi ‘an Lilu Trading Co., Ltd. is a professional import and export focus on transmitter, flow meter, positioner instrument industry provider. We have a huge advantage in the following brand ROSEMOUNT, YOKOGAWA, HONEYWELL, SMC, IMI NORGREN, ABB, ENDRESS + HAUSER, FISHER, YTC, AZBIL, SIEMENS, SCHNEIDER and some European brands.
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