Thermo Scientific ThermoFlex10000, Installation, Operation And Maintenance Manual

Page: 172 / 210

Section 8
8-4 ThermoFlex
Thermo Scientific
Internal Fluid
Temperature Sensor
(rdt1) Calibration
The ThermoFlex was designed to minimize the need for calibration.
However, if calibration is desired or recommended by our Sales, Service and
Customer Support, please use the following procedure.
This procedure requires a running chiller and a calibrated reference
thermometer.
Note Non insulated applications may cause the internal temperature and
an external reference temperature to differ and to fluctuate. If inaccurate
calibration is suspected, place the reference thermometer as close to the
ThermoFlex process outlet as possible.

Note
If it is more convenient, perform the low-end calibration before
doing the high-end.

Do not pick calibration points that are outside the safe operating limits of
the fluid in your application. For example with water, 40°C and 5°C are
typical high and low calibration points.
Run the temperature to a suitable high-end calibration point. Place a
calibrated reference thermometer in the reservoir. Ensure the fluid
temperature is stabilized.
To enter the Calibration Loop ensure the controller display is displaying the
process fluid temperature, see the diagram on next page. Press and hold the
and then press the key. The display will indicate CAL
.
Press the
key and the controller will display
rtd1 . Press
again and the controller will display
r1 H
(high-end calibration).
Press
again and the controller will flash between
r1 H
and the temperature.
Press to adjust the temperature to match the reference thermometer.
Press the
key again to accept the value.
Riton
®
(optional drain fitting)
Tank
Polyethylene
Brass
EPDM
Pyrex
®
Press the key until
StorE
is displayed, press to save
the new value, press to not save it.