Elcometer 319 Standard - Specification Details; Operating Range; Accuracy; Resolution

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Note: The formula used for calculation of Twb and SH uses a fixed value of air pressure set at
1.0 atmosphere (1013 mbar). The accuracy of the Twb and SH will vary at other values of atmospheric
pressure. This variation may be greater than ±1°C for Twb and ±1%/10mb for SH.
OPERATING RANGE
• Surface temperature (built-in probe) Ts -20°C to 80°C (-4°F to 176°F)
• External temperature (Elcometer external probe)Ts -40°C to 200°C (-40°F to 392°F)
• Air temperature Ta -20°C to 80°C (-4°F to 176°F)
• Relative humidity RH 0 % to 100 % RH
• Specific humidity SH 0 g/kg to 325 g/kg (0 gr/lb to 2275 gr/lb)
• Gauge LCD display -20°C to 80°C (-4°F to 176°F)
ACCURACY
• Surface temperature (built-in probe) Ts ±0.5°C (±1°F)
• External temperature (Elcometer external probe)Ts ±2.0°C (±4°F)
• Air temperature Ta ±0.5°C (±1°F)
• Relative humidity RH ±3%
• Specific humidity SH ±8%
RESOLUTION
• Surface temperature (built-in probe) Ts 0.1°C (0.1°F)
• External temperature (Elcometer external probe)Ts 0.1°C (0.1°F)
• Air temperature Ta 0.1°C (0.1°F)