Kobold AFH-G Operating Instruction Download Page 5

AFH-G

AFH-G 07/02

Seite 5

80º C is given as the maximum temperature value. Higher temperatures can only
be tolerated for a short period of time. The eventual result is a change in the
molecular structure which causes a constant error. The maximum temperature of
80º C only applies, however, if no harmful substances (acids, solvents etc.) are
present in the medium.

4.4. Humidity 

and 

tolerance diagram

5. Instrument  Inspection

These devices are checked before dispatch and sent away in perfect condition.
Should the damage to a device be visible, we recommend a thorough inspection
of the delivery packing. In case of damage, please inform your parcel service/
forwarding agent immediately, since they are responsible for damages during
transit.

Scope of delivery:

·

  Measuring Unit Model “AFH-G”

·

 Operating Instructions

6. Mechanical  connection

Unavoidable sources of interference should be kept at a good distance
from the control systems.

Data and signalling lines should not be used in parallel with control,
networking and power lines.

Summary of Contents for AFH-G

Page 1: ...Operating Instruction for Humidity Temperature Measuring Instrument Model AFH G...

Page 2: ...ulation applying to procedural safety and the prevention of accidents 2 Contents 1 Note 2 2 Contents 2 3 Specific Application 3 4 Operating Principles 3 5 Instrument Inspection 5 6 Mechanical connecti...

Page 3: ...ise to a measurable change in length The length of the plastic fibres is thus a measure of the relative humidity The swelling effect acting primarily in the longitudinal direction is sensed by an elec...

Page 4: ...ain their long term stability it is important that the measuring elements undergo a special ageing process details of which cannot be given here 4 3 Reaction of the sensor Due to the law of diffusion...

Page 5: ...spection These devices are checked before dispatch and sent away in perfect condition Should the damage to a device be visible we recommend a thorough inspection of the delivery packing In case of dam...

Page 6: ...rectly to the source of the trouble A suit able suppressor has the added advantage that components such as relays mi croswitches etc have a longer service life Further difficulties during installation...

Page 7: ...AFH G AFH G 07 02 Seite 7 7 Electrical connection 7 1 Passive sensors 7 2 Active sensors...

Page 8: ...erage temperature coefficient 0 1 RH K at 20 C and 50 RH Allowed air speed 8 m s with gauze protection optional 15 m s Half life at V 2 m s 1 2 min Sensor length 220 mm Sensor material stainless steel...

Page 9: ...ents Such substances are resin aerosols lacquer aerosols smoke depos its etc The water resistant property of the Kobold sensors allows for cleaning using water Solvents cannot be used for this purpose...

Page 10: ...ecuring lacquer When the lacquer is removed the screw can be adjusted After calibration the adjuster screw should again be secured Important The air s capacity to absorb water is influenced among othe...

Page 11: ...AFH G AFH G 07 02 Seite 11 12 Dimensions...

Page 12: ...sole responsibility that the product Humidity Temperature Measuring Instrument Model AFH G to which this declaration relates is in conformity with the standards noted below DIN EN 60730 2 1 1993 VDE 0...

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