Fischer Dial Shows Relative Humidity and Temperature in both Fahrenheit and Centigrade at a glance.

Model: Fischer HTAB-176
NIST Certification available

In Germany, Fischer / Lufft has been making fine meteorological instruments for over 100 years. Abbeon has been offering their high quality instruments here in the U.S. for over 50 years.

The Fischer instrument shown here has a white faceplate with black lettering. 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. The thermometer is actuated by a bimetallic spring which transmits changes in temperature through expansion and contraction. Housing is solid brass, polished and lacquered.

The Abbeon Certified Hygrometer Model HTAB-176 is certified to be accurate within ± 3% + 1 graduation. The dial indicates the complete range of 0 to 100% relative humidity. Each instrument has been tested at three different positions of the dial at temperatures ranging from 32° to 230°F. The calibration and certification are done under ISO-9001 control. The bi-metallic thermometer is accurate to ±1°C (0 - 70° C) + 1 scale graduation with a range of -20 to 100° Centigrade and 0 to 210° Fahrenheit. Graduations are 1° for Centigrade, 2° Fahrenheit and 1% RH.

This humidity indicator has a One-year guarantee. Some of our humidity indicators working on the same principle as this instrument have been in use for over 10 years and are giving satisfactory service day after day, month after month, and year after year. Both the humidity and temperature are directly read without any calculations whatsoever.

Solid 6-inch overall brass case drilled for wall mounting. Shipping weight: 3 pounds. Color differentiated 5-inch dial with black letters and numbers and a red pointer.

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