Siemens Model 61VH High-Capacity Booster Pneumatic Relay. RKC MA901-8DD01-MM-4ABC-NN/1/Y Digital Multiloop Temperature Controllers.

Siemens Model 61VH VHC Booster Relay 

Model 61VH is a high-capacity volume booster designed for use on control valve actuators that require very fast stroking speed. In addition, it can respond to small or gradual input changes without jeopardizing steady-state accuracy or stability. It is particularly well suited to double-acting, largevolume actuators. This relay contains an integral stabilizing bypass valve, eliminating the need for an externally piped bypass. The bypass opening is controlled by a screwdriver adjustment in the body of the relay which permits tuning for optimal dynamic response. It is recommended that the bypass valve be opened 1/4-turn (counter-clockwise) at initial start-up.

RKC MA901-8DD01-MM-4ABC-NN/1/Y Digital Multiloop Temperature Controllers

RKC MA900 / MA901 Digital Multiloop Temperature Controllers

The MA901 controls up to 8 channels in a compact 1/4 DIN size. Communication function, alarm function, and digital contact inputs are available.

● Measurement accuracy: ±0.3% of displayed value

● Sampling time: 0.5 sec.

● 4ch (MA900) or 8ch (MA901) temperature control on one controller

● Abundant functions such as multi-memory area function, contact input/output, communication

● Plug-in construction

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