ATEX (Ex d) LoRaWAN temperature and humidity sensor

WSLRWEX-ATH is a LoRaWAN sensor equipped with explosion-proof Ex d components and a built-in, high-grade ambient temperature and humidity sensor.

Thanks to very low energy consumption and intelligent software, the entire device—including the wireless module and sensor—can operate from a single 3.6 V battery for at least five years when transmitting data every 15 minutes. The device supports all LoRaWAN frequency bands.

Typical applications

Monitoring ambient temperature and humidity in warehouses and locations where flammable gases or dust may be present.

Applications

Automatic ventilation systems, facility monitoring, indoor air-quality control, warehouse monitoring and temperature monitoring.

Application notes

Accuracy: determine the required measurement-accuracy level.

Operating temperature range: ensure that the sensor's operating range corresponds to the conditions in the intended application.

Response time: select a sensor with a response time suitable for the application's requirements.

Dimensions and energy consumption: for portable or battery-powered devices, compact sensors with low energy consumption should be selected.

Resistance to environmental conditions: check that the sensor is compatible with the operating environment, including resistance to contact with chemicals and other contaminants.

Sensor type:
Digital, factory-calibrated, transmitting humidity and temperature values. Available in an integrated version or an external version with a cable.

Humidity measurement range and accuracy:
0–100% RH, ±2.0%

Humidity measurement resolution:
0.1%

Temperature measurement range and accuracy:
from −40 to 85°C, ±0.2°C

Temperature measurement resolution:
0.1°C

COMMUNICATION

Spreading factors (SF):
SF7–SF12

Antenna:
External 2.0 dBi antenna

Battery:
1 × C-type battery, 3.6 V DC — battery not included

Radio frequency and transmit power:
860–930 MHz, 14–20 dBm, configurable for the following regions: EU868, IN865, RU864, KR920, AS923, AU915 and US915

Protocol:
LoRaWAN®, Class A

Data-transmission modes:
At specified time intervals, after activation with a magnetic key, and when an alarm event occurs

Wireless-module compliance:
ETSI EN 300 220, EN 303 204 – Europe
FCC CFR47 Part 15 – United States
ARIB STD-T108 – Japan

CERTIFICATES AND EXPLOSION PROTECTION

Ex d certificates:
FTZU 03 ATEX 0207U, TÜV CY 18 ATEX 0206158 X, IECEx FTZU 12.0017U and IECEx MSC 19.0001X

Explosion-protection marking:
ATEX II 2G Ex db IIC T5/T6 Gb
ATEX II 2D Ex tb IIIC T100/T85°C Db

Standards compliance:
ATEX 2014/34/EU, IEC/EN 60079-0, IEC/EN 60079-1 and IEC/EN 60079-31

Applications:
Hazardous gas zones 1 and 2, and dust zones 21 and 22

TECHNICAL PARAMETERS

Operating temperature:
from −40 to 85°C

Housing:
Powder-coated cast aluminum; IP66 degree of protection

Mounting:
Holes for wall mounting

Product dimensions:
H 163 × W 94 × D 72 mm, without antenna

Net weight:
1.5 kg without battery