Wet temperature

Naturally ventilated humid temperature sensor

Thermometer probe with wet bulb and natural ventilation.
ISO7726 standard. The Pt100 element is closed inside a wet cotton sock from a water tank. The water tank has a high reflection factor to avoid water temperature increase due to radiant sources. This sensor is needed for WBGT (ISO77243) heat stress index assessment.

• Wet temperature measurement with natural ventilation as required for the calculation of the WBGT index (ISO7243) in fixed and/or outdoor installation;
• Disegnaed as described in the ISO7726 standard for the “wet bulb temperature”;
• 1/2 litre water tank for more than 30 days water autonomy;
• Well protected by the solar radiation;
• In-house ISO17025 calibration laboratory;
• Accessories for 4-20mA and RS485 output.

PN DMA121A—DMA122
Wet temperature Principle Pt100 DIN-A (Class A EN60751)
Type RTD 4 wires
Measuring range 0…80°C
Accuracy 0.15°C (@0°C)
Output Pt100 DIN-IEC 751 table (EN 60751)
Resolution 0.01°C
Response time (T90 Air) 10 min. (air flow 0,2 m/s)
General Information Standard ISO7726
Protection IP66
Power consumption None
Operative temperature 0…80°C
Cable L=5 m
Mounting On DYA049
Water tank capacity • 50 cl (DMA121A)
• 100 cl (DMA122)
Water refill Every 30 days (25°C, 60% RH)
Data logger compatibility M-Log (ELO008)
R-Log (ELR515)
E-Log, A-Log

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