Temperature sensor Convertor for Photovoltaics – Temmeter 485
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Temperature sensor Convertor for Photovolatics – Temmeter 485
Temmeter-485 (TM3-485 PRO ® & TM4-485) are 2 converters from temperature sensor to RS-485 Modbus output.
Temmeter-485 is a high resistance temperature sensor convertor for photovolatic modules (solar panel), based on a PT100 temperature sensor.
Both converters are a good complement as where thermopile pyranometers are used; They do not have a socket for the module’s temperature sensors, so they are a perfect complement as resistive temperature sensor convertor for those who use a thermopile pyranometer.
Note: Solar modules exposed to high temperature produce less power than same module at 25°C. Correct Performance Ratio (P/R) calculation requires the correct formula. In Southern Europe, PV module temperatures can reach 85°C during the Summer; in those cases the losses of output power are lower of about 25%.
Soluzione Solare temperature sensor convertors are designed for outdoor use and rapid response to temperature variations (from several milliseconds to a few seconds) in order to guarantee precise Performance Ratio calculations.
Key features
- TM4-485 differs from the TM3-485 model for the accuracy.
- TM3-485 convert values read from any PT 100/PT1000 to RS485 Modbus through a dedicated 16 bit converter and precision is ± 0.2° C.
- TM4-485 convert values read from a Silicon sensor encapsuled and distributed by us to RS485 modbus. Precision is ± 2.2° C.
Both models have 2 input channel for temperature measurements. Those 2 channels can be used for 2 points of module temperature or 1 module temperature and 1 ambient temperature.
Note: For identification of the probes TM4-485 is labelled with LM61 and TM3-485 is labelled with PT100.
If the connection is interchanged the temperature sensor convertor will not function.
Advantages
- Faster response to changes in temperature (< 5 seconds for increasing temperature; < 25 seconds for decreasing temperature);
- Strong adhesion to surfaces with low surface tension such as Tedlar;
- Measurement precision above the required standards of a PT100 class A sensor;
- Shielded cable.
Datasheet
| NAME | TM 4-485 | TM 3-485 | |||
| Convertor from our Silicon Temp.Sensor to RS485 | Convertor from any PTC to RS485 | ||||
| Reference standard IEC 60751 | |||||
| The converter is compatible with Smartlogger 3000, Sungrow Ermes, Higeco, Envolve and many others. | |||||
| Measured Value | Sensor 1 -30 ÷ +85 °C toll. ± 3 °C | Sensor 1 -40 ÷ +110 °C toll. ± 0.2 °C | |||
| Sensor 2 -30 ÷ +85 °C toll. ± 3 °C | Sensor 2 -30 ÷ +110 °C toll. ± 0.2 °C | ||||
| Temperature Sensor | Silicon Sensor TM4 resolution | Any PT100 or PT1000 at 2-3-4 wires resolution |
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| Precision of the T.sensor | ± 2.2ºC | Depending by the PTC. With TM3 prec.± 0.15ºC | |||
| Precision of converter | 0.1° C | ||||
| Precision Overall | ± 2.2ºC | ± 0.2ºC | |||
| Calibration | Each TM4 is made by a T.I, Instrument sensor factory calibrated | with 2 reference points using precision reference resistances. | |||
| Output | Serial: RS485, standard Modbus RTU protocol. Distance-Covered (signal): atleast 600 m |
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| Non-linearity | ≤0.3% | ||||
| Supply Voltage | 8 – 30 V dc consumption < 0.06 A Protected against reverse polarity and overvoltage |
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| Consumption (@ 12V) | 0.1 W | ||||
| Encapsulation | Resin conformal coating | ||||
| Casing | IP67 – Coated grey Aluminium | ||||
| Connector | INPUT: M 12 – 8 Pin FEMALE OUTPUT: M8 4 Pin MALE |
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| Dimensions | 97x64x34 mm | ||||
| Operating temperature | -40 ÷ 125 °C toll. ± 0.2° C | ||||
| Box Working temperature | (-30 ÷ +85 °C) | ||||
| Operating humidity | 0 ÷ 95% RH | ||||
| Weight | 200 gr | ||||
** when ordering, specify the version
Pyranometers
Anemometers
Temperature sensors