Set to trip on either an increasing or decreasing control signal, the Mite 70 will vent one port to atmosphere while it locks up the pressure in a second line. The tripped position is then held indefinitely until the control signal is restored and a manual reset button is pushed. The trip point is adjustable from 6.9 to 690 kPa (1 to 100 psi) with a simple screw stem. The Mite 70 can also be tripped on demand from a separate remote signal. Use the Mite 70 to open safety valves in emergency situations, trigger an alarm while locking up a valve or actuate diaphragm motor valves, air cylinders or other pneumatic actuators.
Snap-acting air signal monitor
MITE 73
The Mite 73 is similar in design and function to the Mite 70. A sensitive line monitoring diaphragm and up to four inputs allow even more versatility. When tripped by either an increasing or decreasing signal, one output is vented to atmosphere while the other is locked up. The Mite 73 can be tripped by remote and is also capable of being reset pneumatically for fully automated control.
Snap acting relays enable designers to build a certain safety factor into a system. Primary air (pilot air, signal air) is used to operate the relay under normal operating conditions, but if the primary air supply should drop below a certain pressure, the relay will switch to a secondary air supply. Switching the air supply may lead to the valve remaining in its current position, retracting, or extending. The action dictated by the secondary air supply is often linked to the desired fail-safe position of the valve.
We have a high level of traceability for every activity which our positioners go through during production
