The ITCH (Instrument Temperature Control Heater) Assembly is 100% mechanical, operating solely based on ambient and/or fluid temperature changes controlled by a wax motor.
The thermostatic wax actuator located at one extreme of the TV/SC-A valve operates like the thermostat in an oven, automatically senses the internal enclosure temperature, and regulates steam flow to the heater coil to maintain the desired temperature. The TV/HAT at the steam inlet keeps the steam supply hot to prevent freezing even when the TV/SC-A valve is closed. The TV/HAT at the coil outlet regulates condensate discharge temperature for maximum economy with minimized overheating potential.
The ITCH Heater Assembly comes complete with a steam coil, mounting bracket, and TV/SC-A valve assembly, two TV/HAT valves, and two weather-tight bulkhead fittings for 3/8 tubing connections.
The ITCH Assembly, instrument temperature control valve assures accurate temperature control in an instrument or analyzer enclosure. It will maintain enclosure temperature accurately over a wide range of ambient temperatures with steam supply pressures from 15 PSIG (1 BAR) to 200 PSIG (13.8 BAR) without danger of overheating delicate instruments.
This self-contained unit provides a reliable, economical alternative to costly, hazardous electric heating. No special NEMA-7 or 9 housings are required even in potentially explosive environments.
- Exclusive self-actuating Thermoloid® blend wax thermal actuator
- All stainless-steel construction
- Compact, low mass – fast response
- Corrosion-resistant – long service life
- Ram-type plug for tight reliable shutoff
- Operating temperatures unaffected by variable inlet pressures
- Wide choice of set-points available
- Self-operating – no external power source required
- Economically controls steam flow
- Maintain enclosure temperature accurately over a wide range of ambient temperatures
- Eliminates danger of overheating
- Complete kit with standard tube connections for quick and easy installation
PART NUMBER 1
3/8” ITCH ASSEMBLY