Sonel PVM-1020 KIT

1. PVM-1020 Photovoltaic Meter

The Sonel PVM-1020 is one of the world’s smallest photovoltaic system meters with an extensive range of measurement functions. All functions are easily selected using a rotary switch, while additional settings can be adjusted with conveniently placed buttons. The backlit display and buttons enhance usability, especially in shaded environments such as ground-mounted PV systems. The device’s large memory significantly streamlines post-measurement documentation.

PVM-1020 | Key Features

• Supports Category 1 measurements as per IEC 62446-1.
• AUTO mode enables a sequence of measurements with a single press of the START button.
• Converts measured parameters to STC conditions (IEC 60891) when paired with the IRM-1 solar radiation and temperature meter.
• reSYNC function: Automatically supplements measurement results with environmental parameters upon reconnection with the IRM-1.
• Long-range LoRa radio interface for seamless IRM-1 communication.
• Built-in Bluetooth for wireless data transfer to a computer.
• Large storage capacity: 100 objects with 40 cells each.
• Backlit buttons and display for improved visibility in low-light environments.

PVM-1020 | Measured Parameters

• Open circuit voltage of a PV panel or string – up to 1000V DC.
• RMS voltage of AC networks – up to 600V, with frequency measurement.
• Short circuit current of PV panels or strings – up to 20A DC.
• Insulation resistance of PV panels – measuring voltages: 250V, 500V, 1000V, with simultaneous measurement of RISO+ and RISO-.
• Insulation resistance of AC circuits – measuring voltages: 250V, 500V, 1000V.
• Protective conductor and equipotential bonding resistance – measured with ±200mA current.
• Low-current resistance measurement with audible and visual signaling.
• PV panel operating current and AC current – measured using an external clamp.
• AC/DC power measurement.
• Diode test – 200mA test current, automatic polarity detection.
• Blocking diode testing – up to 1000V DC.

PVM-1020 | Durability & Protection

Designed for tough environmental conditions, the PVM-1020 is housed in a rugged IP65-rated enclosure, ensuring protection against dust and water—a crucial feature for outdoor PV installations.

PVM-1020 | Communication & Software

Measurement data can be wirelessly transferred to a computer via Bluetooth. The Sonel Reader software allows easy data saving, export to various formats, and report printing. For electrical shock protection reports, the optional Sonel Reports PLUS software is available.

PVM-1020 | Trouble? reSYNC!

If the PVM-1020 temporarily loses connection with the IRM-1, measurements can continue uninterrupted. Once communication is restored, the reSYNC function will automatically update results with the missing environmental parameters recorded by the IRM-1, ensuring all data is converted into STC conditions.

2. IRM-1 Solar Radiation & Temperature Meter

Despite its compact size, the IRM-1 is an essential tool for PV system testing. It measures solar radiation levels, panel temperatures, and ambient temperatures, providing crucial data for STC condition adjustments.

IRM-1 | Key Features

• Measures solar radiation and temperature for precise PV analysis.
• LoRa interface ensures long-range communication with the master meter.
• Automatic data synchronization via the reSYNC function.
• Built-in compass and inclination sensor for precise panel orientation.
• Data recorder for pre-installation site analysis and shading diagnostics.
• Extensive storage: 999 cache memory cells and 5000 recorded measurements (overwriting available for continuous recording).

IRM-1 | Measured Parameters

• Solar radiation intensity (irradiance) – displayed in W/m² or BTU/ft²/h.
• PV panel temperature – measured in °C or °F.
• Ambient temperature – measured in °C or °F.
• Panel inclination angle.
• Panel orientation – determined using a built-in compass.

IRM-1 | Durability & Protection

Like the PVM-1020, the IRM-1 features a robust IP65-rated enclosure, ensuring dust and water resistance—essential for outdoor PV system testing.

IRM-1 | Communication & Software

Data from the IRM-1 can be transferred via USB to a computer. Additionally, its built-in LoRa wireless interfaceenables automatic long-distance data exchange with the master meter.