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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These sensors are classified as ISO 9060 Secondary Standard. With a total daily uncertainty of only 2% within 0…180° field of view, fast response time,
N. 8/16 analog inputs , n.4 digital inputs,Input extension using MASTER/SLAVE configurations , Extremely low power consumption
Accurate temperature measurements (0.1°C) , Availability of extrnal converters for 4-20 mA e Mod-bus-RTU outputs
LSI Lastem has a wide range of models to cover any need for meteorological … First Class pyranometers. Pyranometers with 5% total daily accuracy (ISO9060)
