Cata-Dyne™
Infrared Oven
Operation and Instructional Manual - Temperature Measurements
Temperature Measurements
It is possible to read the approximate internal thermocouple
temperature of each heater using nothing more than a
simple multi-meter, either analog or digital. The thermocouple
pre-amps convert the thermocouple signals into currents
so that wire resistance doesn’t effect the value. The
current is then turned into voltages by precision resistors
on the CPU card. These voltages can be read right at
the pre-amp terminal blocks on the CPU card as shown
in the following table.
The internal thermocouples are placed at the rear
of the catalyst pad inside the heater. Note that the
internal temperature of the heater can be very different
from the temperature at the face of the heater. The
notes to the right of the voltages are based upon software
versions CIS2b2c and CIS3a0X.
|
Temp
(°C)
|
Volts
|
Notes:
Software Versions CIS2b2c & CIS3a0X
|
|
100
|
1.29
|
Minimum preheat temperature
with electric elements
|
|
125
|
1.41
|
Minimum operate temperature
|
|
150
|
1.54
|
Hot start threshold temperature
|
|
200
|
1.79
|
|
|
250
|
2.04
|
|
|
300
|
2.31
|
|
|
350
|
2.55
|
Max startup temp (begin preheat
duty-cycle modulation)*
|
|
400
|
2.81
|
|
|
450
|
3.06
|
|
|
500
|
3.33
|
|
|
550
|
3.59
|
|
|
600
|
3.85
|
|
|
650
|
4.12
|
|
|
700
|
4.39
|
|
*Preheat duty-cycle modulation – This is a safety
feature designed to limit the maximum temperature while
the electric elements are powered. The controller will
turn the preheat contactor on and off when the temperature
exceeds 350 degrees Celcius. The ratio off “on time”
to “off time” or duty cycle is varied to prevent over
heating.
If you have any further questions, or for further assistance,
please contact:
CCI Thermal Technologies Inc.
(1-800-661-8529)
or
Trinity Electronics Systems Ltd. (1-888-480-3199)
|
