Hart Scientific 1620A Overview

The Hart Scientific model 1620A is a Thermo-Hygrometer.

Operating Range: 0 C to 50 C (32 F to 122 F); 0 %RH to 100 %RH

Calibrated Temperature Accuracy (ToneHTone Model) 0.125 C from 16 C to 24 C (Tone 0.225 F from 60.8 F to 75.2 F)

Calibrated temperature Accuracy (ToneSTone Model): 0.25 C from 15 C to 35 C (Tone 0.45 F from 59 F to 95 F)

Calibrated RH Accuracy (ToneHTone Model): 1.5 %RH from 20 %RH to 70 %RH

Calibrated RH Accuracy (ToneSTone Model): 2 %RH from 20 %RH to 70 %RH

Expected Extrapolated Performance (Uncertified): 0.5 C (Tone 0.9 F) outside calibrated range 3 %RH outside calibrated range

Delta Temperature Accuracy: 0.025 C for 1 changes within 15 C to 35 C (Tone 0.045 F for 1 changes within 59 F to 95 F)

Temperature Resolution: User selectable up to 0.001 C/F on front-panel display (0.01Tone re

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