Manual

6.3 Checking sample temperature

56 768 KF Oven

6.3 Checking sample temperature

For GLP requirements it may be necessary to check the sample temperature of the Oven

with the 6.5615.000 measuring equipment. The actual measurement of the temperature is

carried out with a type K thermal element (with yellow plug) and a suitable temperature

measuring device. Purchase this measuring device separately at your laboratory equip-

ment agency.

Proceed as follows:

1. Fill a similar amount of sample (or NaCl) as for your applications into the 6.2415.010

boat of the measuring equipment.

If you normally work with Al inserts, fold insert into the boat and fill in sample (or

NaCl).

2. Introduce temperature probe into the tube of the 6.2415.010 boat. Clip the guide rod

onto the boat and set both into the insert tube of the Oven. Place the temperature

probe in the middle of the boat (where you normally place your sample).

3. Screw cover onto the insert tube. Pull the sealing wire/cover app. 20 cm away from

the cover (otherwise the boat can't be moved into the Oven).

4. Move the boat into the Oven (key <BOAT IN>).

You may now screw the sealing onto the cover.

5. Switch on heater (key <HEATER>) and pump (key <PUMP>) of the Oven and set a

gas flow as for your applications, e.g. 100 mL/min.

6. Adjust the sample temperature (key <PARAM>).

7. Plug the yellow plug into the temperature measuring device and set device to

"Measure".

8. Wait until a stable sample temperature is reached (app. 20 minutes).

9. Read temperature of the temperature measuring device.

10. If you screwed the sealing onto the cover, unscrew it.

Remove boat from Oven (key <BOAT OUT>).

If there is any difference between the measures temperature and the sample temperature

of the Oven, you may correct it as follows:

Example:

Nominal temperature (key <PARAM>).......................................200 °C

Temperature at the measuring device .......................................205 °C

1. Correction of the nominal temperature

Set the temperature to 195 °C (key <PARAM>).

2. Temperature correction

Temperature correction (key <CONFIG>, >oven settings).......... - 5 °C

In the Oven display you will see the currently measured temperature without correction. The

highest and lowest temperatures in the result report as well are the measured temperatures

of the Oven without correction.