TESTO 6381 Instruction Manual page 109

Material
• Probe shaft: Stainless steel
• Line: Sheathed, FEP
• Connector: ABS plastic
Accuracy (at 25 °C/77 °F)*
• Humidity
◦ ± (1.0 % RH + 0.007 x reading) for 0 to 90 % RH
◦ ± (1.4 % RH + 0.007 x reading) for 90 to 100 % RH
◦ 0.02 % RH/K, dependent upon the process temperature
(with a deviation of 25 °C/+77 °F)
◦ 0.02 % RH/K, dependent upon the electronics temperature
(with a deviation of 25 °C/+77 °F)
• Temperature
◦ ±0.15 °C (0.27 °F) with slope PT1000 class AA
* Refer to the charts below for the correlation between
temperature and accuracy.
Reproducibility
• Better than ±0.2 % RH
Sensor
• Response time without protective filter: t 90 max. 15 sec.
Probe dimensions
• Diameter of probe shaft: 12 mm
• L = approx. 200/300/500/800 mm
• L – A = 165/265/465/765 mm
• A, see 6.2.1.4. Table Protection caps
Cable length incl. probe shaft and filter
• Customized for duct version
Pressure resistance
• PN 10 (probe tip)**
** If installing probe under pressure, use cutting ring screw
connection (order no. 0554 1795).
Measuring accuracy of testo 6612 duct probe
Humidity error, absolute |±% RH| as a factor of process humidity
(% RH)
6 testo 6610 probes
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