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Xtester- IDK32 Humidity and Temperature probes suitable calibration device
Calibration instructions
Generally the following apply: - Room temperature: 23°C ±2K - Instruments, calibrating device and the humidity standard must be at the same temperature. 1K temperature difference between the humidity standard and sensor can result in up 6% rh humidity error. - No draughts in the calibration room. - No direct sunshine. - The values of the humidity standards apply at 23°C. - If the temperature is different from the standard temperature of 23°C, the corresponding value of the humidity standard has to be taken into account. Preparation Provision of the humidity standard, calibration device and test object. When using EM(V)-15/25 carefully unscrew the filter from the probe. Remove the knurled lid of the calibration device. Insert or screw the probe with sensor carefully into the calibration device. Place a textile pad in the lid of the calibration device. Handling Hold the ampoule of the selected humidity standard at the neck and bring the entire contents into the further, lower part of the ampoule by swinging or lightly tapping against the glass. Break the ampoule at the marked place and empty it completely on the center of the textile pad while tapping it lightly. Align the probe so that the opening for the lid points downwards. Screw on the lid with calibration solution. The sensor, probe or screw-in thread may not come into contact with the humidity standard. Place the probe with calibration device on the lid of the calibration box. Switch the instrument on. Adaptation time The time to reach the humidity equilibrium depends upon the humidity standard. 45 min. for 0.5, 5, 10, 11.3, 20, 35, 50, 65% rh 60 min. for 75.3, 80% rh 120 min. for 95% rh Calibration The instrument is ready for calibration after the adaptation time. Adjustment of ROTRONIC instruments ROTRONIC sensors have an imprinted characteristic. Adjustment at one, two, three or four different humidity values depends upon whether a basic adjustment or merely a readjustment is performed. Please note the instrumentspecific operating instructions. Adjustment of outside instruments Refer to the operating instructions of the corresponding instrument to perform correct adjustment. Important After every calibration the textile pad must be renewed and the lid washed out with water and well dried. Also check the calibration device for cleanliness. Accessories You will find the required calibration accessories in the ROTRONIC humidity and temperature measurement catalogue. Shelf life of humidity standards The humidity standards are filled in gas tight glass ampoules. Their shelf life is therefore almost unlimited. ROTRONIC guarantees the usage property for ten years without limitations, provided the standards are stocked at 10…30 °C in the original package. |
