Product Description
FISCHER TEMP/HUMIDITY GAUGE - Dial w/ White Face & Brass Case
Test certificate included!
A beautiful durable Fischer / Lufft instrument with easy-to-read face. These units have been giving accurate readings for many years.
Made in Germany by Fischer (Lufft previously) and accurate to RH: ±3% RH (30 ... 95%), + 1 scale division and Temp: ±1°C (0 - 40° C) + 1 scale graduation.
The humidity is sensed by a durotherm element that is a synthetic hygroscopic fiber that expands and contracts in response to the moisture in the air. Housing is solid brass, polished and lacquered.
The temperature is indicated by the actuation of a bimetallic spring which transmits changes by expansion and contraction.
The calibration and certification are done under ISO-9001 control. The measurement of the temperature and relative humidity remains correct if the pressure goes up or down.
This is confirmed for the pressure range of 600 … 1200 hPa (mbar) = 8.7 … 17.4 PSI.