Chapter
1
1.
Channel 1 Gain Pot
3.
Channel 1 Balance Pot
2.
Channel 1 Calibrate Switch
4.
Recorder Output Jack
6.
Channel 2 Calibrate Switch
5.
Channel 2 Gain Pot
7.
Channel 2 Balance Pot
8.
Gain Select Jumper
Hardware
Features
Alarm Status Display
Fault Status - High and Low
Door Label
Channel 1-Channel 2 calibrate switch
Wiring diagram for (2) sensor inputs
2. and 6.
Channel Calibrate Switch
Three-position switch used for setup.
AZ (Auto Zero ON) position is the normal run
position.
CAL position (calibrate) is used with Gain pot
to set calibration numbers.
OFF position is used with Balance pot to zero
sensor.
OFF position turns Auto Zero off.
1. and 5.
Channel Gain Potentiometer
Used to set calibration numbers. Set three-
position switch to CAL setting.
4.
Recorder Output
Jacks for analog or track output of sensor data.
One jack for each channel. Can be used with
chart recorders or Helm Ramcorder™ data
recorder.
3. and 7.
Channel Balance Potentiometer
Used to zero balance the sensor during setup.
Set three-position switch to OFF position.
Gain Selector
High and Low Cam
Jumper Setting
Located at Bottom
Left Corner of Module
Black Jumper
Used to amplify the sensor input.
This switch is factory set at high
range. Under normal operating
conditions, the setting should not
be changed. Personnel
responsible for the calibration of
the Helm StrainGage module
make the determination of the
range setting during the
calibration process.
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