K-TEK Corp., a manufacturer of instrumentation for level, pressure, and temperature measurement, has announced the BETA Air Relay, a new, pilot-operated, snap action pneumatic switch from BETA N.V. The switch features a patented, snap-action mechanism that is said to do away with problems associated with throttling bands. Unlike other pilot-operated vent valves, the Air Relay can be fine-tuned for accurate increasing or decreasing action, according to the company.
The switch features a narrow deadband, as low as 10 mbar, and supports pilot supply and signal pressures up to 7.0 bar.
Designed for valve control, bleed-off shut-down, or alarm applications - both offshore and on - the BETA Air Relay can also be safely used in hazardous areas, including Zone 0 (no spark) applications. The switch is available in two configurations: TYPE SA for Normally Closed (N.C.) operation and TYPE SB for Normally Open (N.O.) operation.
The BETA Air Relay has been certified by KEMA for use in potentially explosive atmospheres.
To view the data, visit: http://www.telesian.com/marketing/vpr/ktek/ktek022309-ds.pdf.