Fischer Humidity and Temperature – Dial w/ Black Face.
The Durable Fischer HTAB-169 Hygrometer is certified to be accurate within ±3% RH (30 … 95%), + 1 scale division.
The dial indicates the complete range of 0 to 100% relative humidity. Each instrument has been tested for accuracy at 3 points on the scale for high, medium and low readings. The calibration and certification are done under ISO-9001 control.
The bimetallic thermometer on the model HTAB-169 is accurate to ±1% of scale and has a range of -10° to 190°F.
Gradations are 1% RH and 2° Fahrenheit.
- Gleaming finish, housing is solid brass, polished and lacquered.
- Overall diameter 6″
- Dial 5″
- Case drilled for wall mounting
- Black dial with white numbers and letters
- Manufactured and tested under ISO-9001
- Plastic lens available upon request
- Accuracy ±3% RH + 1 scale division
Because these are mechanical instruments, they will not hold the ± 3% accuracy on the far ends of the scale (below 20% and above 95%). 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.
