BAS LC-22C Instruction Manual - page 11
Universal Liquid Probe
1.
Ensure that the stainless steel probe is plugged into the jacks marked “PROBE 1" or
”PROBE 2" and observe the color code used on the jacks.
2.
Turn the main power on to the LC-22C. Rotate the display selector knob to “SENS 1"
or ”SENS 2", depending upon which channel is being used for measurement. The
digital display will read the probe temperature in degrees C.
3.
The measured temperature is available as an analog voltage at the “OUTPUT” screw
terminals on the back panel. This six position terminal strip is detachable: pull straight
back for release. Probe 1 outputs are the labeled “+ 1 -”, probe 2 outputs are labeled
“+ 2 -” on the back panel.
4.
An analog voltage of 100 mV (0.1 volt) is equivalent to 1°C. For example:
+8.92 volts = +89.2°C
-0.36 volts = - 3.6°C
This voltage may be recorded using a strip chart recorder. Set the full scale input of the
recorder to 10 volts. Observe the marked polarity.
5.
To control the temperature while measuring it, first turn off the main power to the LC-22C.
Connect the power cable of the heating device (75 watts maximum) to the appropriate
heater jack, i.e., “HTR 1" if ”PROBE 1" is the corresponding sensor channel.
Turn the main power on and select the corresponding channel setpoint LED. Rotate the
setpoint heater knob to obtain the desired control temperature. The actual probe
temperature can be observed by changing the display selector knob to the controlled
channel’s sensor LED, marked “SENS 1" or ”SENS 2".
TEMPERATURE MEASUREMENT/CONTROL MODE
Section 4. OPERATION
9