Redline Operating Manual RE / RF / RI 12/2010
page 33/46
7.
Calibrating and adjusting the temperature controller
Check the temperature controller for accuracy every year (calibration) and, if necessary, adjust it
(adjustment).
7.1
Required measuring equipment
An electronic measuring and display device with a valid calibration certificate and which has been
approved by a recognized standards or calibration authority or regulatory body.
RE / RF: Measuring range:
≥
20 °C /
68°F
up to 250 °C /
482°F
RI: Measuring range:
≥
20 °C /
68°F
up to 70 °C /
158°F
at 10 % r.H. to 70 % r.H.
The sensor should be connected to the display instrument via a slim cable that can be placed over the
door gasket of the redLINE chamber without this causing a leak.
7.2
Check (calibration)
•
Attach the temperature sensor of the reference measuring device to a tray in the center of the usable
volume and place the sensor cable over the door gasket in a way that it is possible to close the glass
door (RI) and the chamber door. Close the glass door (RI) and the chamber door.
•
Turn on the redLINE chamber and set the lower adjustment temperature. Wait for 60 minutes after the
interior temperature has first reached the set-point to permit equilibrating.
•
Compare the temperature displayed on the controller display to the reading of the reference
measuring device. Note down the value of the reference measuring device and the difference to the
value shown on the controller.
•
Then set the upper adjustment temperature. Wait for 60 minutes after the interior temperature has first
reached the set-point to permit equilibrating.
•
Compare the temperature displayed on the controller display to the reading of the reference
measuring device. Note down the value of the reference measuring device and the difference to the
value shown on the controller.
Adjusting the temperature controller is necessary if the temperature displayed on the controller deviates
by more than ±1 K (RE / RF) resp. ±0.5 K (RI) from the temperature shown by the reference measuring
device.
7.3
Two-point adjustment procedure
Press the configuration button for at least one second to enter the access menu “Level 1”. With the
arrow-up key toggle to “Level 2” and enter the password “1” in the “Code” display. Afterwards the
controller reverts automatically to the main menu.
Main menu
(e.g. Standby)
1 sec.
SELECT ACCESS
LEVEL
