Lakeshore 335 - Monitor Units; Polarity and Monitor out Scaling Parameters

5.6.1 Monitor Units 73
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5.6.1 Monitor Units
The Monitor Units parameter determines the units of the Control Input sensor to use
for creating the proportional voltage output. The Monitor Out scaling parameter set
-
tings will be entered using the units chosen for this parameter.
Menu Navigation:
Output SetupQOutput 2QOutput Type (Voltage)QOutput Mode (Monitor Out)Q
Control Input (None, Input A, Input B)QMonitor Out Units (Kelvin, Celsius, or Sensor)
Default: Kelvin
Interface Command: ANALOG
5.6.1.1 Polarity and Monitor Out Scaling Parameters
In the Monitor Out and Open Loop modes, the voltage output can be configured as
either unipolar (0 V to +10 V) or bipolar (–10 V to +10 V). In bipolar mode, the Monitor
Out –10 V setting determines the temperature or sensor value at which the output
should be –10 V. In unipolar mode, the Monitor Out 0 V setting determines the tem
-
perature or sensor value at which the output should be 0 V. The Monitor Out +10 V
setting determines the temperature or sensor value at which the output should be
+10 V in either unipolar or bipolar modes.
For example, if Polarity is set to Bipolar, then setting the Monitor Out –10 V parameter
to 0 K and the Monitor Out +10 V parameter to 100 K will cause the voltage output to
correspond to the input temperature as shown in
FIGURE 5-4. In this case if the actual
reading was 50 K, then the output would be at 0 V (middle of the scale).
FIGURE 5-5 shows the output if the Polarity parameter is set to Unipolar. In this case if
the actual reading was 50 K, the voltage output would be +5 V (middle of the scale).
Menu Navigation:
Output SetupQOutput 2 QOutput Type (Voltage)QOutput Mode (Monitor Out)Q
Control Input (None, Input A, Input B)QMonitor Out Units (Kelvin, Celsius, or Sensor)
QPolarity (Unipolar or Bipolar)
Output SetupQOutput 2 QMonitor Out 0 V (Unipolar) or -10 V (Bipolar)Q(See note
below)
Output SetupQ Output 2 QMonitor Out +10 V Q(See note below)
FIGURE 5-3 Unipolar and bipolar mode
FIGURE 5-4 Analog output with polarity set to bipolar
FIGURE 5-5 Output with polarity parameter set to unipolar
Bipolar
Lowest Middle Highest
–10 V 0 V +10 V
0 V +5 V +10 V
Lowest Middle Highest
Input mode
Input
Output
Input
Output
Unipolar
Bipolar
0 K 50 K 100 K
–10 V 0 V +10 V
Input
Output
0 V +5 V +10 V
0 K 50 K 100 K
Input
Output
Unipolar
ENTER