Precision Control Systems ChamberIR E4 - Manual (Page 18)

Page 17 of 19
To control rapid rates in high response application a closed loop temperature controller should
be used. To reduce excessive inrush current, always preheat lamp filament for at least ½
second before applying full voltage.
Operating Procedures
The following procedures are used to operate the Model E4 Quad Elliptical Heating chamber.
Warning
Prior to operation, ensure all installation procedures are
performed as described in section 4, Installation
1. Unlock hinge fastener and open up unit
2. Center and locate specimen within Heating Chamber opening, and if desired, attach
thermocouples to specimen.
3. Close unit and lock hinge fastener
4. Turn on coolant water. Check for leaks and obstructions in coolant flow lines.
5. Select appropriate voltage level on power controller or input power source and switch
power to On. (See table 2-1 for input voltage ratings for lamps used in appropriate model
E4)
6. Control heating rate for desired time interval and switch power to off.
7. Allow heat to dissipate from heating chamber and specimen, then open unit and remove
specimen.
8. Visually inspect lamps and interior reflector surfaces of heating chamber for foreign
matter and contamination. Clean (if required) before installing another specimen. (Refer
to section 5, Maintenance, for proper cleaning procedures.)
Maximum specimen temperature depends on:
a) Conduction and convection heat loss
b) Surface area;
c) Reflectivity of specimen. Up to
3000˚F for short periods, i.e., a few seconds, is permissible
where above parameters are relatively small.
Warning
Do not exceed 2000˚F continuous specimen setpoint temperatures