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Rigel 2

Weather Sensors

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RIGEL 2 MT-A420

PV module temperature sensor, analog 4-20 mA output

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  • AccuracyClass A
  • IP RatingIP65
  • Temp Range-40 to +150 C
  • SensorRTD PT1000
RIGEL 2 MT-RTD1K

PV module temperature sensor, PT1000 resistance output

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  • AccuracyClass A
  • IP RatingIP65
  • Temp Range-40 to +150 C
  • SensorRTD PT1000
RIGEL 2 MT-RS485

PV module temperature sensor, RS485 Modbus RTU output

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  • AccuracyClass A
  • IP RatingIP65
  • Temp Range-40 to +150 C
  • SensorRTD PT1000

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The three models measure the same way and differ in their output. Pick the input your logger has.

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Your match: RIGEL 2 MT-A420

RIGEL 2 MT-A420

Your match

RIGEL 2 MT-A420

PV module temperature sensor, analog 4-20 mA output

  • Output4 to 20 mA Current
  • Current consumption0.5 mA
  • Operating temperature-40 C to +150 C

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RIGEL 2 MT-RTD1K

Your match

RIGEL 2 MT-RTD1K

PV module temperature sensor, PT1000 resistance output

  • OutputResistance Output (PT1000)
  • Resolution0.001 C
  • Operating temperature-40 C to +150 C

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RIGEL 2 MT-RS485

Your match

RIGEL 2 MT-RS485

PV module temperature sensor, RS485 Modbus RTU output

  • OutputRS485 MODBUS RTU
  • Supply voltage12 VDC / 24 VDC
  • Operating temperature-40 C to +80 C

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RIGEL 2 MT-A420

Rigel 2 MT-A420 is the analog version of Rigel 2, with a 4-20 mA current output for data loggers and SCADA analog inputs. It measures PV module back-surface temperature with an IEC 60751 Class A PT1000 element, for IEC 61724-1:2021 Class A monitoring systems.

Features

  • Class A Accuracy

    The PT1000 element meets the IEC 60751 Class A tolerance, ±(0.15 + 0.002|t|) °C, suitable for IEC 61724-1:2021 Class A monitoring systems.

  • Faster Thermal Response

    Ultra-low-mass RTD PT1000 element delivers sub-second thermal response — capturing rapid PV module temperature changes with fidelity.

  • Bifacial PV Ready

    Low-profile 7.2 mm body mounts flush on the rear surface of bifacial modules without obstructing rear-side irradiance.

  • IP65 Rugged Body

    Aluminium 6082 enclosure with IP65 ingress protection — sealed for deployment across desert, tropical, and coastal environments.

  • Self-Adhesive Mount

    Ships with a high-performance VHB adhesive pad rated for −40°C to +150°C — module-ready in minutes, no drilling or tools needed.

  • 3 Output Variants

    Available in Analog 4–20 mA (MT-A420), PT1000 Resistance (MT-RTD1K), and RS485 Modbus RTU (MT-RS485) — integrates with any data logger or SCADA system.

Technical Specifications

RIGEL 2 MT-A420

Specifications

Output Signal4 to 20 mA Current
Temperature Range-40 C to +150 C
AccuracyIEC 60751 Class A, ±(0.15 + 0.002|t|) °C
Uncertainty+-0.3 deg
Resolution0.01 C
Sensor Element TypeRTD PT1000 Class A
Current Consumption0.5 mA

Physical

Operating Temperature-40 C to +150 C
Ingress ProtectionIP65
MaterialAluminium 6082
DimensionsDia. 25.4 mm x Thickness 7.2 mm
Weight<15 g (excl. cable weight)
Cable Diameter0.216 cm (0.085 in.)
Cable Length2 meters

* |t| is the numerical value of the temperature in C, irrespective of sign.

RIGEL 2 MT-RTD1K

Rigel 2 MT-RTD1K is the resistance version of Rigel 2: the PT1000 element is read directly by the data logger's RTD input. It measures PV module back-surface temperature with an IEC 60751 Class A PT1000 element, for IEC 61724-1:2021 Class A monitoring systems.

Features

  • Class A Accuracy

    The PT1000 element meets the IEC 60751 Class A tolerance, ±(0.15 + 0.002|t|) °C, suitable for IEC 61724-1:2021 Class A monitoring systems.

  • Faster Thermal Response

    Ultra-low-mass RTD PT1000 element delivers sub-second thermal response — capturing rapid PV module temperature changes with fidelity.

  • Bifacial PV Ready

    Low-profile 7.2 mm body mounts flush on the rear surface of bifacial modules without obstructing rear-side irradiance.

  • IP65 Rugged Body

    Aluminium 6082 enclosure with IP65 ingress protection — sealed for deployment across desert, tropical, and coastal environments.

  • Self-Adhesive Mount

    Ships with a high-performance VHB adhesive pad rated for −40°C to +150°C — module-ready in minutes, no drilling or tools needed.

  • 3 Output Variants

    Available in Analog 4–20 mA (MT-A420), PT1000 Resistance (MT-RTD1K), and RS485 Modbus RTU (MT-RS485) — integrates with any data logger or SCADA system.

Technical Specifications

RIGEL 2 MT-RTD1K

Physical

Operating Temperature-40 C to +150 C
Ingress ProtectionIP65
MaterialAluminium 6082
DimensionsDia. 25.4 mm x Thickness 7.2 mm
Weight<15 g (excl. cable weight)
Cable Diameter0.216 cm (0.085 in.)
Cable Length2 meters

Specifications

Output SignalResistance Output (PT1000)
Temperature Range-40 C to +150 C
AccuracyIEC 60751 Class A, ±(0.15 + 0.002|t|) °C
Resolution0.001 C
Sensor Element TypeRTD PT1000 Class A

* |t| is the numerical value of the temperature in C, irrespective of sign.

RIGEL 2 MT-RS485

Rigel 2 MT-RS485 is the digital version of Rigel 2, reporting over RS485 Modbus RTU to a data logger or SCADA system. It measures PV module back-surface temperature with an IEC 60751 Class A PT1000 element, for IEC 61724-1:2021 Class A monitoring systems.

Features

  • Class A Accuracy

    The PT1000 element meets the IEC 60751 Class A tolerance, ±(0.15 + 0.002|t|) °C, suitable for IEC 61724-1:2021 Class A monitoring systems.

  • Faster Thermal Response

    Ultra-low-mass RTD PT1000 element delivers sub-second thermal response — capturing rapid PV module temperature changes with fidelity.

  • Bifacial PV Ready

    Low-profile 7.2 mm body mounts flush on the rear surface of bifacial modules without obstructing rear-side irradiance.

  • IP65 Rugged Body

    Aluminium 6082 enclosure with IP65 ingress protection — sealed for deployment across desert, tropical, and coastal environments.

  • Self-Adhesive Mount

    Ships with a high-performance VHB adhesive pad rated for −40°C to +150°C — module-ready in minutes, no drilling or tools needed.

  • 3 Output Variants

    Available in Analog 4–20 mA (MT-A420), PT1000 Resistance (MT-RTD1K), and RS485 Modbus RTU (MT-RS485) — integrates with any data logger or SCADA system.

Technical Specifications

RIGEL 2 MT-RS485

Physical

Operating Temperature-40 C to +80 C
Ingress ProtectionIP65
Material (Sensing Element)Aluminium 6082
Material (Circuitry)ABS
Dimensions (Sensing Element)Dia. 25.4 mm x Thickness 7.2 mm
Weight<20 g (excl. cable weight)
Cable TypeLi2YD11Y-24 AWG BRD
Cable InsulationExtruded Polyurethane

Specifications

Output SignalRS485 MODBUS RTU
Temperature Sensing Range-40 C to +150 C
AccuracyIEC 60751 Class A, ±(0.15 + 0.002|t|) °C
Uncertainty+-0.3 deg
Resolution0.01 C
Sensor Element TypeRTD PT1000 Class A
Supply Voltage12 VDC / 24 VDC

* |t| is the numerical value of the temperature in C, irrespective of sign.

Applications

  • Solar PV Module Temperature Monitoring

    The Rigel 2 is the IEC-specified sensor for back-of-module (BOM) temperature measurement on mono- and bifacial PV panels — essential for Performance Ratio and yield assessment.

  • Surface Temperature Monitoring

    Wide operating range from −40°C to +150°C and IP65 protection make the Rigel 2 suitable for general-purpose surface temperature measurement on outdoor structures and equipment.

Built to Work Together

The Altair ATRH sensor, Rigel 2 module sensor, and Xtreme data logger form one bankable monitoring chain — from field to cloud.

  1. 1

    Altair / Rigel

    Sensor. Measure air temperature, humidity and PV module temperature to IEC 61724-1:2021 Class A.

  2. 2

    Xtreme XG

    Logger. Reads every sensor on site, stores the data and sends it on over Ethernet, Wi-Fi or LTE.

  3. 3

    DaLI

    Firmware. The web console built into every Xtreme station, for setup and checks on site.

  4. 4

    Live3

    Cloud. See every station, get told when something is wrong, and fix it without a site visit.

Select Your Model

MT-A420Analog 4-20 mA, product code 55009
MT-RTD1KPT1000 Resistance, product code 55006
MT-RS485RS485 Modbus RTU, product code 55020
ComplianceIEC 61724-1:2021
AccuracyClass A

Used in

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Contact

Ask for a price on Rigel 2, or talk to one of our engineers about your application.

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Offices

India

Head office and design centre, Pune

Plot No. 7, Lane No. 5, Laxman Nagar, Balewadi
Pune, Maharashtra 411045, India

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Factory, Pune

Vivan Kohli Industrial Park, Shed No. 5, Gat No. 446
Old Pune-Mumbai Highway, Naigaon, Kanhe Phata, Talegaon
Pune, Maharashtra 412106, India

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Sales and support, Bengaluru

First Floor, Building No. 11, Sai Anugraha
Jeevan Bhima Nagar Main Road
Bengaluru, Karnataka 560075, India

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Sales and support, Vijayawada

Door No. 52-1/4-8D, Plot No. 9, 5th Cross Road
Veterinary Colony
Vijayawada, Andhra Pradesh 520008, India

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International

Aeron Systems Pvt. Ltd., Sharjah

Saif Executive Office # P8-17-02
Sharjah Airport International Free Zone Authority
PO Box 8000, Sharjah, U.A.E.

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