Baker Hughes Druck Dry PTC 200, Инструкция по эксплуатации

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English–PTC Temperature Calibrators | 39
11.1.2 Annually
1. Visually inspect all parts of the calibrator for corrosion, wear and damage.
2. Have a trained technical person carry out an electrical safety inspection.
11.1.3 Recalibration
It is recommended to send the calibrator to Druck for recalibration after 36 months, or after a
maximum of 500 operating hours, whichever is sooner.
11.1.4 Calibration Liquid
Calibration liquids become contaminated with age and with use. The speed at which this occurs
depends greatly on the type of liquid and the usage behavior.
1. Replace contaminated or aged calibration liquid.
11.1.5 Magnetic Stirrer
The magnetic stirrer is subject to mechanical wear and tear during normal operation. The
magnetic stirrer has a limited lifetime and requires periodic replacement. The fillet in the middle
of the magnetic stirrer reduces the friction during the rotary movement. Once the fillet has worn,
the stirring function can no longer be guaranteed because of the increased friction.
1. Check the fillet of the magnetic stirrer for wear and tear. Replace the magnetic stirrer if
necessary.
11.1.6 Mains Fuses
The mains fuses of the calibrator are located on the front side and are integrated in the mains
connection. If mains voltage is present, but the display is dark and the fan is not running, check
the mains fuses. Replace the fuses if necessary.
1. Disconnect the mains connection cable from the calibrator.
2. Prise open the fuse compartment from the bottom with a fingernail or a flat screwdriver.
3. Remove the compartment with the fuses.
4. Check the fuses and replace any blown fuses.
Note: Always replace both fuses, even if only one has blown.
5. Fit the fuse compartment back in place and connect the mains connecting cable. See
Section 4.2.
Note:
Should the fuses blow repeatedly, there is probably a fault with the calibrator. Send the
calibrator to Druck for repair.
11.2 Calibration
11.2.1 Recalibration
The calibrator is adjusted and tested with measuring equipment in accordance with recognized
national standards prior to delivery.
The calibrator should, depending on the application situation, be inspected at appropriate
intervals on the basis of ISO 10012.
It is recommended to send the calibrator to Druck for recalibration after 36 months, or after a
maximum of 500 operating hours, whichever is sooner.
WARNING
Only use fuses of the same type.
For fuse specification, see Section 13.