Caron 6105 User Manual
Page 17
Model 6105 Operations Manual Rev I
03/03/2014
Page 17 of 22
CALIBRATION
The temperature and humidity systems can all be calibrated as necessary. CARON
recommends an annual calibration check of each system. Before making a
calibration adjustment, allow the cabinet to stabilize a minimum of 12 hours from a
power off condition. If the unit has been in operation, allow a minimum of 3 hours of
stable operation at all set-points. If you do not have the appropriate reference
instruments to perform calibration, contact CARON’s service department for on-site
calibration at
. Caron also provides validation services
which ensures that the unit is functioning properly according to IQ, OQ and PQ
protocols which satisfy FDA guidelines for qualification verification of equipment.
Calibration Procedure:
1. Place an external temperature/humidity detector* as close to the center of the chamber as
possible. Allow sufficient time for the chamber and the sensor to stabilize. It is
recommended to place the detector with only the heat on to allow the sensor to stabilize to the
temperature. Once the sensor has had sufficient time to stabilize; turn the humidity on. This
should eliminate condensation on the sensor.
It is recommended that the acceptable range is ± 1ºC and ± 2% RH.
2. If the reading difference is within the acceptable range; no changes will need to be made. If
the difference is greater than the acceptable range; use the following steps to adjust the
controller to be within the acceptable range. The difference will be used as the offset below.
3. To make the adjustment to controllers, press and hold the ‘infinity’ and ‘advance’ keys
simultaneously for 6 seconds. Once the Programming Page has come up; release the keys.
Using the ‘advance’ key; scroll through until the P4 parameter is displayed. Use the ‘up’ and
‘down’ keys to scroll up/down until CAL is displayed. Hit the ‘infinity’ key to save the
changes and the main screen will be displayed.
4. To get the CAL setting; press the ‘advance’ key until CAL is displayed. You can now use the
‘up’ and ‘down’ keys to put the necessary offset as determined above. Hit the ‘infinity’ key to
save the setting and the main screen will be displayed. Allow the chamber to stabilize and
repeat as necessary until the readings are within acceptable range. Record final readings
below.
5. Repeat Step 2 to return to P4 of the Programming Page. Use the ‘up’ and ‘down’ keys to
return the setting from CAL to NONE. Press the ‘infinity’ key once to save the setting and
return to the main screen.
*Caron recommends using NIST traceable device to calibrate the controllers. A Vaisala HMI41/HMP46
temperature/humidity detector or a similar device is recommended. A “wick” type sensor is not
recommended due to the likelihood that the sensor will become saturated and give inaccurate readings.