Wika CTM9100-150 Bedienungsanleitung PDF herunterladen (Seite 18)

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18 WIKA operating instructions, models CTD9100, CTB9100, CTM9100

11263911.02 05/2014 GB/D

6. Commissioning, operation

Medium Calibration range Flash point

Distilled water 5 ... 90 °C none

Dow Corning 200 Fluid with 5 CS -40 ... +123 °C 133 °C

Dow Corning 200 Fluid with 10 CS -35 ... +155 °C 163 °C

Dow Corning 200 Fluid with 20 CS 7 ... 220 °C 232 °C

Dow Corning 200 Fluid with 50 CS 25 ... 270 °C 280 °C

6.1 Operating position

The operating position of the calibrator or the micro calibra-

tion bath is in the vertical orientation, since this guarantees

an optimal temperature distribution in the metal block or

liquid bath.

6.2 Inserts with metal block

In order to achieve the greatest possible accuracy, the use

of exactly matched inserts is necessary. For this, diameter of

the specimen must be accurately determined. The bore for

the insert is obtained by adding +0.5 mm.

6.3.1 Properties of the calibration liquid

Dierent calibration liquids, due to their specic properties,

deliver varying calibration results. A compensation to the

calibration liquid used in each case should, if necessary, be

performed by the manufacturer at the factory.

Recommended calibration liquids for the dierent tempera-

ture ranges:

Water as a calibration liquid

■

Only use distilled or demineralised water, otherwise the

calibrator tank can become strongly scaled and soiled.

Silicone oil as a calibration liquid

■

Only use the silicone oil recommended here.

■

When working with silicone oil, sucient ventilation should

be ensured in the room since it can give o pollutants.

■

Since silicone oil is hygroscopic, after use, always close

the calibration bath using the transport cover.

Only use clean calibration liquids. The

checking of temperature sensors and other

temperature measuring devices may lead to

the contamination of the calibration liquid.

These contaminants, through the rotational

movement of the magnetic stirrer, may

cause an abrasive eect on the bottom tank.

Wear safety goggles!

Do not allow silicone oil to come into contact

with the eyes.

■

Clean the tank

■

Before calibration, clean the sensors

■

Replace the worn magnetic stirrer

■

Replace the contaminated, cloudy calibration liquid

6. Commissioning, operation

Following use, the inserts should be

removed using the replacement tools

and then the sleeve and block should be

cleaned. This prevents the sleeves becom-

ing jammed in the heating block.

6.3 Preparation of the micro calibration bath

In order to achieve the highest possible accuracy for a micro

calibration bath, it should be lled with an appropriate calibra-

tion liquid.

Inserts

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 99 100

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