6
5. Operating Connections and Precautions
1. When operating in the thermocouple output mode, the CL300A has the
ability to simulate up to 10 T/C types plus mV into devices which
measure thermocouples:
NOTE
: If the CL300A is improperly connected to a low impedance load
(either a short or near short) the display will flash.
FIGURE 2
SIMULATING A THERMOCOUPLE OUTPUT
2. When operating in the thermocouple Measure Mode the CL300A can be
used to read the temperature of a thermocouple probe.
In this mode, the CL300A will detect an open circuit should the thermo-
couple junction malfunction. In this case, the display will indicate “OL”. It
will also indicate “OL” if no probe is connected in the Input Mode.
FIGURE 3
READING A THERMOCOUPLE PROBE
1Kohm or
greater input
impedance
Thermocouple
device under test
Use thermocouple wire for
the type selected (e.g. if a
"J" T/C is being simulated,
you must use "J" wire.)
Thermocouple
mini-connector