TM-485 Series - Advanced Temperature Sensor Converters for Photovoltaics

Details

Both TM3-485 PRO and TM4-485 share the following characteristics:

Dual input channels for flexible temperature monitoring:
- Option to measure two points of module temperature
- Alternatively, measure one module temperature and one ambient temperature
RS-485 Modbus RTU output for reliable, long-distance signal transmission (up to 600m)
Robust design for outdoor use:
- IP67-rated coated grey aluminum casing
- Resin conformal coating for enhanced protection
Wide operating temperature range
Shielded cable for improved signal integrity
Compatibility with various monitoring systems (e.g., Smartlogger 3000, Sungrow Ermes, Higeco, Envolve)
Fast response to temperature changes
Strong adhesion to surfaces with low surface tension (e.g., Tedlar)

Compatible with any PT100 or PT1000 temperature sensor (2, 3, or 4-wire configuration)
High-precision measurements:
- Overall precision: ± 0.2°C
- Dedicated 16-bit converter for enhanced accuracy
Wider temperature measurement range:
- Sensor 1: -40°C to +110°C
- Sensor 2: -30°C to +110°C
Ideal for applications requiring high-precision temperature measurements

Sensor Type:
- TM3-485 PRO: Compatible with any PT100 or PT1000 sensor
- TM4-485: Uses a proprietary silicon sensor
Precision:
- TM3-485 PRO: ± 0.2°C
- TM4-485: ± 2.2°C
Temperature Range:
- TM3-485 PRO: Wider range (-40°C to +110°C for Sensor 1)
- TM4-485: -30°C to +85°C for both sensors
Calibration:
- TM3-485 PRO: Depends on the PTC sensor used
- TM4-485: Factory calibrated with two reference points

The TM-485 series is ideal for:

Select the TM3-485 PRO for:
- Applications requiring high-precision measurements
- Compatibility with existing PT100 or PT1000 sensors
- Wider temperature range requirements
Choose the TM4-485 for:
- General-purpose temperature monitoring in photovoltaic systems
- Applications where moderate precision is sufficient
- Scenarios benefiting from factory-calibrated sensors

Product Names: TM3-485 PRO and TM4-485 (Temmeter-485)
Output: RS-485, standard Modbus RTU protocol
Signal Distance: At least 600 m
Non-linearity: ≤ 0.3%
Supply Voltage: 8 – 30 V DC, consumption < 0.06 A (protected against reverse polarity and overvoltage)
Power Consumption: 0.1 W (@ 12V)
Encapsulation: Resin conformal coating
Casing: IP67 – Coated grey Aluminium
Connectors:
- INPUT: M12 – 8 Pin FEMALE
- OUTPUT: M8 4 Pin MALE
Dimensions: 97 x 64 x 34 mm
Operating Humidity: 0 to 95% RH
Weight: 200 g