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Teracom TSH331, IP54 Temperature and humidity sensor
Teracom TSH331, IP54 Temperature and humidity sensor
TSH331 updates and replaces TSH330 and provides reliable temperature and humidity monitoring for industrial and infrastructure applications that require protection against dust and water sprays. As an IP54 temperature and humidity sensor, it communicates via RS-485 using the widely adopted Modbus RTU protocol, enabling straightforward integration into industrial automation environments.
A precision capacitive element measures relative humidity, while a bandgap sensor measures temperature. Internal electronics digitize both signals using a 12-bit analog-to-digital converter, ensuring stable, repeatable readings and consistent long-term measurement performance across demanding operating conditions.
This IP54 temperature and humidity sensor supports multi-drop RS-485 installations, allowing multiple devices to operate on a single bus with individually assigned Modbus addresses. The architecture simplifies system expansion and makes the sensor suitable for distributed monitoring within industrial ecosystems, including PLC-based and SCADA-controlled installations.
The rugged enclosure protects the sensor against dust ingress and water sprays, while the cable gland with locknut and screwless terminal block simplify wiring and speed up installation. TSH331 integrates seamlessly with Teracom controllers as well as third-party automation platforms, enabling flexible deployment in mixed-vendor systems.
Features:
• ±3.0% RH accuracy for reliable environmental monitoring
• 14-bit temperature and 12-bit humidity measurement resolution
• RS-485 interface supporting up to 247 devices on a single bus
• Native Modbus RTU communication for PLC and SCADA integration
• LED indicator for communication and device status
• Rugged IP54 enclosure for industrial and infrastructure environments
Applications:
• Industrial automation and process environment monitoring
• Environmental monitoring in greenhouses, agriculture, and controlled facilities
• Telecom sites and remote technical facility monitoring
• Server rooms and data center climate supervision
• Humidity and temperature monitoring in building management systems (BMS).
• PLC and SCADA-based distributed monitoring systems
Compatible Devices:
• Industrial PLCs supporting Modbus RTU communication
• Energy monitoring module TCW260
• Temperature and humidity data logger TCW210-TH
• SCADA systems and third-party Modbus RTU controllers
• Industrial IoT module TCW242
• 4G LTE universal IO module TCG140-4
| Specifications | ||
| Physical characteristics |
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| Dimensions | 68 x 105 x 35mm | |
| Weight | 70g | |
| Environmental limits | ||
| Operating temperature range | -20 to 60°C | |
| Operating relative humidity range | 10 to 90% (non-condensing) Recommended operating range is 20% to 80% RH (non-condensing) over –10 °C to 60 °C Prolonged operation beyond these ranges may result in a shift of sensor reading, with slow recovery time |
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| Long term drift typical | ±0.25%RH/year, ±0.05°C/year Higher drift might occur due to contaminant environments with vaporized solvents, adhesives, packaging materials, etc. |
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| Storage temperature range | -20 to 60°C | |
| Storage relative humidity range | 10 to 90% (non-condensing) | |
| Ingress protection | IP54 | |
| Power requirements | ||
| Operating voltage range | (including -15/+20% according to IEC 62368-1): 4.5 to 26VDC | |
| Current consumption | 5 mA@5VDC | |
| Humidity measurements | ||
| Accuracy (min) | ±3.0%RH (in 20 to 80 %RH range) | |
| Accuracy (max) | ±5.0%RH (in 10 to 90 %RH range) | |
| Resolution | 0.1 %RH | |
| Temperature measurements | ||
| Accuracy (min) | ±0.4°C (in -10 to +60°C range) | |
| Accuracy (max) | ±0.6°C (in -20 to +60°C range) | |
| Resolution | 0.1 °C | |
| Interface | ||
| Response time ≤ 50ms |
Master response time-out ≥ Response time + Answer time The answer time depends on the number of bits and the baud rate |
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