Flush-mounted temperature transmitter 3S-MT-PT1000-U

Pt10000-10 Vvoltage output

Product overview
The 3S-MT-PT1000-U is a module temperature sensor that measures photovoltaic module backside temperature in °C using a PT1000 probe placed between backsheet layers with an EVA film. An integrated transducer converts the PT1000 signal to an analog 0–10 V output for direct integration with dataloggers, gateways and PLCs featuring 0–10 V inputs.

What is Module Temperature Sensor?
The sensor monitors the rear-surface temperature of PV modules in degrees Celsius. Because cell temperature affects short-circuit current and open-circuit voltage, accurate module temperature measurement is essential for performance assessment and thermal management of solar plants.

Working principle
A high-precision PT1000 probe senses module temperature. The measurement is processed by an electronic board enclosed in a UV-resistant housing which linearises and transduces the PT1000 signal to an analog 0–10 V output. The device is rated IP67 for outdoor operation.

Installation guidance
Follow IEC 61724-1:2021 placement recommendations: mount the probe at the center of a cell near the module midpoint, avoiding cell boundaries. Apply sensor on a dry, clean area of the backsheet using the supplied 3M® tape. Ensure surface is free from contaminants and take care in cold conditions where dew or residue may hinder adhesion.

Advantages

• Accurate PR estimation: provides precise module temperature data required for reliable Performance Ratio calculations.
• Overheat protection: real-time temperature input enables control systems to mitigate overheating and reduce risk of long-term damage.
• Weather adaptability: enables dynamic operational responses to changing weather to maximise energy yield.

Why SEVEN Sensor solutions?
SEVEN products use quality components and the sensor structure mirrors PV module backside construction to reproduce comparable heat-transfer behaviour. The 3S-MT-PT1000-U is designed in accordance with Annex B of IEC 61724-1:2021 and IEC 60751:2022, delivering resolution ≤ 0.1 °C and uncertainty ±1 °C.

Technical specifications

• Item code: 3S-MT-PT1000-U
• Sensor type: PT1000
• Measuring range: -40 °C to +85 °C
• Accuracy: ±0.1 °C
• Resolution: 0.1 °C
• Data output: Analog 0–10 V
• Power supply: 12–30 V DC
• Power consumption: 15 mA @ 24 V DC
• Electrical connection: 1.2 m and 2 m cables 2x2x0.22 mm² (24 AWG) LI2YC11Y-TP PUR, UV- and weather-resistant
• Operating temperature: -40 °C to +85 °C
• Enclosure dimensions: 65 mm x 115 mm x 55 mm (W x L x H)
• Sensor cover: Ø 33 mm x 3.5 mm (plastic) / Ø 35 mm x 2 mm (EVA)
• Weight: 267 g
• IP rating: IP67
• Enclosure material: ABS
• Mounting method: 3M® tape on module backside
• Standards: Class A according to IEC 60751:2022 and IEC 61724-1:2021