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A thermohygrograph records air temperature and relative humidity on a continuous basis. It is used to monitor the optimum temperature and humidity where these factors are important.
measuring element temperature
bimetal -35°C to 45°C +/- 0.5K (Model 425)
-15°C to 65°C +/- 0.5K (Model 425S & 425QS)
Measuring element air humidity
Hair 0 to 100% +/- 3% at 20...100% rh
It is fitted with either a quartz clock or a clockwork motor, switchable between one, seven or 31 day drum rotation. Please specify choice when ordering.
Mechanical drum clock acc. to Din 58658
revolution cycle Model 425 & 425S day 25.6h
Electronic Quartz clock
revolution cycle Model 425QS day 25.6h
Please specify clock type when ordering.
drum material: plastic
chart paper holder material: brass nickel plate
write range 80mm for each measuring element.
60 sheets of week chart paper
4 fibre pens
Battery Mignon (AA) 1.5V (R6) (for electronic quartz clock)
Length 290 x breath 145 x height 260mm
Please Contact us for price.
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