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Model 9002 Operating Modes
and Adjustments
Operating Modes
The Model 9002 has the following three operating modes:
Measurement Mode - The sensor operates in the measurement mode.
Adjustment Mode - Allows for adjustment of sensor operational
characteristics, including:
• Altitude correction
• Configuration of display/output
• Adjust measurement range
• Adjust analog output signal range, and
• Adjust relay set point and dead band.
Calibration Mode - This mode can be used to calibrate the sensor in the
field.
Keypad Buttons
Clear Button - Allows to Exit
Adjustment or Calibration mode and
return to measurement mode.
Mode Button - When in the
Adjustment Mode, the mode button
will advance the Model 9002 to the
next variable that can be adjusted.
Arrow Button - Allows user to
increase or decrease values or choose
between selected variables.
Enter Button - Programs new settings
or selection into the sensor.
Clear + Mode (3 sec) - Enter
Adjustment Mode
Clear + Enter (3 sec) - Enter Calibration Mode
Adjusting the Sensor
Using the Onboard Keypad
The sensor is shipped with the factory default settings (as shown in
Table 1 below), which can be adjusted, using the keypad and display.
When in Adjustment Mode, the selection of various adjustment
parameters appears sequentially in the order detailed below. Pressing
clear at any time will exit the Adjustment Mode.
If an adjustment is made to any of the sensor parameters,
Note:
it will be retained by the
is powered OFF. Adjustments to the output of the sensor
will only apply to the unit of measure selected for the
display mode. The non-selected display mode will
continue to operate at its factory setting. For example, if
the output range of the dew point measurement is
adjusted, the grains/lb settings will not be affected and
remain at the initial factory settings.
Page 2
clear
mode
enter
Clear
Mode
Arrow
Enter
Button
Button
Button
Button
even when the sensor
Model 9002
Factory Settings
Table 1: Model 9002 Default Factory Settings
Default
Measurement Unit
Selected Measurement
Dew Point
Unit
Display
°F Dew Point
Measurement Range
0 to 80 °F Dew
Point
Analog Output
0 - 10 V and
4 - 20 mA
Relay Set Point
55°F Dew Point
Relay Hysteresis (Dead
2°F Dew Point
Band)
Altitude
N/A
Adjustments Required for Installation
Select Display Units (°F dew point or grains/lb) (Factory set for dew
point.) - The units selected for display on the LCD will also correspond
to the units used for the analog output and relay setting of the Model
9002.
Set Elevation - Since the density of air and gases are affected by
altitude, a correction must be made to the reading in grains/lb units,
depending on the altitude. The sensor is factory set for sea level
operation.
Calibration - It is also recommended that the user perform a single point
zero or ambient calibration of the sensor to ensure maximum accuracy at
start-up. For details, see the "Calibration" section on page 4.
Adjustment Mode
1. Hold the Clear + Mode buttons for 5 seconds.
2. Each adjustment mode will appear sequentially on the display.
Pressing Mode or Enter will move to the next adjustment value. The
sequence that adjustment values will appear are as follows:
• Altitude
• Display Units
• Analog Output, and
• Relay
Altitude Adjustment
1. Use the Arrow button to adjust altitude up or down in 500 ft.
increments.
2. When altitude is set, press Enter to store the correction in the sensor.
3. Press Mode to move to water vapor display or Clear to exit the
Adjustment Mode.
Display/Output Units between Dew Point (DEW PT) or
Grains/lb (Grains)
1. Press Mode button to leave or skip the elevation selection.
2. Use Arrows to select GRAINS or DEW PT.
3. Press Enter to confirm selection.
4. Press Mode to move to SETTINGS or Clear to exit the Adjustment
Mode.
Dew Point
Grains/lb
Grains/lb
0 - 140 Grains/lb
0 - 10 V and
4 - 20 mA
65 Grains/lb
5 Grains/lb
Sea Level (0 feet)
Telaire Vaporstat™ Model 9002
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