Chart Installation
1. Press the pen home key to make pens move to the outside of
the chart.
2. Press the pen lifting bar to raise the pens. Remove the record-
ed chart if present.
3. Place the new appropriate chart on the chart hub – being cer-
tain that the edge of the chart slides under the chart guide clips
located at the outside of the chart.
Note: The chart should lay flat on the dial face.
4. Set time by inserting a coin into the groove in the chart hub and
turning clockwise until the correct hour (and day if applicable)
on the chart is referenced to the timing clip.
5. Lower the pen lifting bar so that the pen tips rest firmly on the
paper.
6. Press the pen home key to return the pens to position. At the
end of one recording time cycle, simply repeat steps 1-5,
replacing the used chart with a new one.
7
Pen Installation
Calibration
Calibrate RH/Dew Point
(using salt capsules)
1. Turn the unit on and use dip switch #5 to select humidity or
dew point. Use dip switch #3 to select °F or °C (°F = #3 Off) or
(°C = #3 On)
2. To activate the calibration mode, turn the unit off. Now press
the “On/Off” key and the “Up Arrow” at the same time. The dis-
play should read “UC” in the upper right hand corner of the dis-
play to indicate you are in the “User Calibration” mode.
3. Place the probe of the unit into a 11% salt capsule or 75% salt
capsule, by removing the cap and inserting the probe. Allow
approximately 2 hours for the unit to stabilize.
For best results, calibrate the unit at the level typically monitored
during normal operation.
4. Match the CR10 reading with either 11% or 75%, depending
on the salt capsule being used. To raise the RH/Dew Point
reading, press the “Up Arrow” key. To lower the reading, press
the “Down Arrow” key.
5. When calibration is complete, simply press the “On/Off” key to
save calibration settings.
Calibrate Temperature
1. Press the “On/Off” key & “Up Arrow” key simultaneously to
enter the “User Calibration” mode. Use dip switch #3 to select
°F or °C. (°F = #3 Off) or (°C = #3 On) The display should read
“UC” in the upper right hand corner of the display.
2. Place the CR10 probe, along with your precision temperature
instrument (your temperature standard) into a controlled envi-
ronmental chamber allowing both instruments to completely
stabilize, approximately 1 hour.
For best results, calibrate the unit at levels typically monitored dur-
ing normal operation.
3. Match the CR10 reading with your precision temperature
instrument.
4. To raise temperature reading, press the “Alarm Set” key. To
lower the temperature reading press the “Alarm On/Off” key.
Each key press adjusts the reading by 1°F.
5. When calibration is complete, simply press the “On/Off” key to
save calibration settings.
Calibrating is stored in memory even after you turn the unit off.
User calibration information will not be lost if AC power fails.
1. Press the “Pen Home” key to return pen to the home posi-
tion.
2. Use the pen lifter to raise the pens.
3. Gently lift the cartridge slightly and slide it off the pen arm.
4. With the pen tip facing the chart, and the new pen cap off,
thread the pen arm through the sleeve on the underside of
the pen. Slide the cartridge back until you feel the notch in
the pen arm seat securely around the plastic portion of the
pen tip.
E-90-CR10 6/22/05 3:14 PM Page 7
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