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Sonel PVM-1021 Pro – photovoltaic meter – PV system tester Up to 1000 V
2 199.00 $
The Sonel PVM-1021 Pro is a professional photovoltaic meter kit designed for thorough commissioning and diagnostic testing of PV systems with a maximum DC voltage of 1000 V. The main photovoltaic meter — PVM-1021 — handles the full electrical test sequence required under EN 62446-1 category 1: open-circuit voltage, short-circuit current, insulation resistance (DC and AC sides), protective earth continuity, and AC/DC power.
The companion IRM-1 solar radiation and temperature meter feeds real-time irradiance and panel temperature data directly to the PVM-1021 via LoRa, enabling automatic STC conversion per EN IEC 60891 without any manual data entry. The reSYNC feature ensures no results are lost if the two devices drift out of range during work on large ground-mounted arrays — the PVM-1021 retroactively fills in the environmental data once the link is re-established. Both instruments are built for outdoor use, with the photovoltaic meter rated IP54 and the IRM-1 at IP65.
| Weight | 1.3 kg |
|---|---|
| Dimensions | 24.4 × 16.9 × 7.1 cm |
Online sales are only available in Europe and Southern Africa.
To obtain a quote for shipping outside these regions, please contact us using the form below.
The Sonel PVM-1021 Pro components and features
The Sonel PVM-1021 Pro is ideal for:
- EN 62446-1 category 1 commissioning of new PV installations, including string and array testing
- Measuring open-circuit voltage (Voc) and short-circuit current (Isc) up to 1000 V DC / 20 A DC
- Insulation resistance testing on both DC and AC sides at 250, 500, and 1000 V simultaneously (RISO+ and RISO−)
- Verifying protective earth continuity and equipotential bonding (±200 mA, EN IEC 61557-4)
- Automatic STC conversion using live irradiance (W/m²) and temperature data from the paired IRM-1 meter
- Diagnosing panel shading problems using the IRM-1’s built-in recorder (5000 records)
- Testing blocking diodes at 1000 V DC and forward-bias diode testing at 200 mA
- AC/DC power measurement and clamp-based current measurement up to 400 A
- Pre-construction solar resource surveys using the IRM-1’s inclination sensor and compass
The results from the Sonel PVM-1021 Pro – photovoltaic meter can be used for:
- Producing EN 62446-1 compliant commissioning documentation via Sonel Reports PLUS software
- Converting field measurements to Standard Test Conditions (STC) per EN IEC 60891 for accurate panel performance verification
- Comparing measured Voc, Isc, and power against manufacturer datasheet values at STC
- Identifying underperforming strings or panels through insulation resistance and continuity results
- Verifying inverter input parameters and AC output voltage (up to 600 V RMS) post-installation
- Supporting warranty claims and performance guarantees with traceable, calibrated measurement records
- Exporting structured measurement data (100 objects × 40 cells) to a computer via Bluetooth for report generation
What’s in the Pro kit
- PVM-1021 photovoltaic meter
- IRM-1 solar radiation and temperature meter
- Solar radiation meter mounting kit for PV panels
- Temperature probe for PV panels and ambient temperature
- Test leads 1.2 m — black, blue, yellow (1 each)
- Crocodile clips 1 kV 20 A — black, red, yellow (1 each)
- Pin probe 1 kV (banana socket) red
- MC4-to-banana sockets adapter (set of 2)
- C-PV clamp
- 5 V power supply with USB 2.0 output and detachable micro-USB cable
- Strap
- L4 carrying case
- AA 1.5 V batteries (4×)
- AAA 1.5 V batteries (2×)
- Factory calibration certificate — PVM-1021
- Factory calibration certificate — IRM-1
Unboxing video
Kit Components:
Key Features
- EN 62446-1 category 1 compliant — covers all mandatory PV commissioning tests in a single kit
- Automatic STC conversion via live LoRa link to the IRM-1 — no manual data entry on site
- reSYNC — automatically backfills environmental data if the wireless link drops mid-measurement
- One-press AUTO mode runs the full test sequence without manual function switching
- Simultaneous DC and AC insulation resistance measurement (RISO+ and RISO−) at 250, 500, or 1000 V
- Blocking diode test at 1000 V DC with automatic polarity detection
- Clamp-based AC/DC current and power measurement up to 400 A / 100 kW
- IRM-1 logs irradiance, panel temperature, tilt, and orientation — doubles as a pre-construction survey tool
- 100 objects × 40 cells memory, Bluetooth export, compatible with Sonel Reports PLUS
- IP54 (PVM-1021) and IP65 (IRM-1) — built for outdoor use on ground-mounted arrays
Measured parameters:
- The open circuit voltage of the PV panel or a chain of panels, up to 1000V DC.
- RMS voltage of the AC network up to 600 V with frequency measurement.
- Short circuit current of a PV panel or chain of panels – up to 20 A DC.
- Insulation resistance of PV panels – measuring voltage of 250, 500 or 1000 V, simultaneous measurement of two values: RISO+ and RISO-.
- Insulation resistance of AC circuits – measuring voltage 250, 500 or 1000 V.
- Resistance of protective conductors and equipotential bonding with ± 200 mA current. Low-current resistance measurement, audible and visual signaling.
- Measurement of PV panels operating current and AC current – all with external clamp.
- AC/DC power Measurement.
- Diode test with 200 mA current, automatic polarity detection. Test of blocking diodes with 1000V DC voltage.
Ingress protection and durability:
The meter performs well in harsh environmental conditions. Protection against the ingress of dust and water is provided by the housing rated at IP54. This is especially important for measurements on photovoltaic systems, which are outdoor installations.
Communication and software:
Measurement data from the PVM-1021 can be transferred to a computer via Bluetooth wireless communication. Saving the downloaded data to popular formats.
Sonel PVM-1021 Pro Technical Specifications
|
Parameter |
Range/Value |
|
Voltage |
|
|
DC voltage (Voc) |
0–1000 V, ±(0.5% m.v. + 2 digits) |
|
AC voltage (RMS) |
0–600 V, ±(2% m.v. + 2 digits) |
|
Current |
|
|
Short-circuit current (Isc) |
0–20 A DC, ±(1% m.v. + 2 digits) |
|
Clamp current (operating / AC) |
0–400 A, ±(5% m.v. + 2 digits) |
|
Insulation resistance |
|
|
DC side (250 / 500 / 1000 V) |
0–300 MΩ, ±(8% m.v. + 8 digits) |
|
AC side — 250 V |
0.25 kΩ–2 GΩ, ±(3% m.v. + 8 digits) |
|
AC side — 500 V |
0.25 kΩ–5 GΩ, ±(3% m.v. + 8 digits) |
|
AC side — 1000 V |
0.5 kΩ–9.999 GΩ, ±(3% m.v. + 8 digits) |
|
Resistance |
|
|
Protective earth / bonding (±200 mA) |
0.11–1999 Ω, ±(2% m.v. + 3 digits) |
|
Low-current resistance |
0–1999 Ω, ±(3% m.v. + 3 digits) |
|
Power |
|
|
AC/DC power |
0–100 kW, ±(6% m.v. + 5 digits) |
|
Safety and build |
|
|
Measurement category |
CAT III 1000 V (EN IEC 61010-2-030) |
|
Ingress protection — PVM-1021 |
IP54 |
|
Ingress protection — IRM-1 |
IP65 |
|
Insulation type |
Double (EN 61010-1 / EN IEC 61557) |
|
Operating temperature |
−10 to +40 °C |
|
Dimensions (PVM-1021) |
244 × 169 × 71 mm, ~1.3 kg |
|
Power supply |
4 × AA 1.5 V or 4 × Ni-MH AA 1.2 V |
|
Memory and communication |
|
|
PVM-1021 memory |
4059 records (100 objects × 40 cells) |
|
IRM-1 memory |
999 cache cells + 5000 recorder records |
|
PVM-1021 data transfer |
Bluetooth |
|
IRM-1 data transfer |
USB + LoRa to PVM-1021 |
|
Software |
Sonel Reader (included); Sonel Reports PLUS (optional) |
|
Standards |
|
|
Commissioning standard |
EN 62446-1 category 1 |
|
STC conversion |
EN IEC 60891 |
|
EMC |
EN IEC 61326-1, EN IEC 61326-2-2 |
Product Downloads
Features:
- Measurement of solar radiation and temperature.
- The LoRa interface for communication with a master meter – offers a larger range than the Bluetooth technology!
- Automatic data synchronisation with a master meter with reSYNC function.
- Built-in compass and inclination sensor.
- Built-in recorder that can be used to record solar radiation before constructing PV systems, as well as to measure the shading of existing systems.
- Large measurement memory: 999 cache memory cells and 5000 recorder, records available (one-time recording) with the option of overwriting them (continuous recording).
Measured parameters:
- Solar radiation intensity (irradiance) in W/m2 or BTU/ft2 h.
- PV panel temperature in °C or °F.
- Ambient temperature in °C or °F.
- Inclination angle of panels
- Orientation of the panels with the built-in compass.
Protection and durability:
The meter performs well in harsh environmental conditions. Protection against the ingress of dust and water is provided by the housing rated at IP65. This is especially important for measurements on photovoltaic systems, which are outdoor installations.
Communication and software:
Measurement data from the IRM-1 can be transferred to a computer via the USB port. In addition, the device has a built-in wireless LoRa interface (Long Range) for automatic data exchange with the master meter – even over long distances.
Specifications:
| Parameter | Measurement range | Display range | Resolution | Accuracy |
| Irradiance | ||||
| Measurement in W/m² | 100 W/m² …1400 W/m² | 0 W/m² …1400 W/m² | 1 W/m² | ±(5% m.v. + 2 digits) |
| Measurement in BTU/ft² h | 32 BTU/ft² h…444 BTU/ft²h | 0 BTU/ft² h…444 BTU/ft² h | 1 BTU/ft² h | ±(5% m.v. + 2 digits) |
| PV and ambient temperature | ||||
| Measurement in °C | -20.0°C…100.0°C | -20.0°C…100.0°C | 0.1°C | ±(1% m.v. + 5 digits) |
| Measurement in °F | -4.0°F…212.0°F | 4.0°F…212.0°F | 0.1°F | ±(1% m.v. + 5 digits) |
| Inclination angle | -90°…+90° | -90°…+90° | 1° | ±2° |
| Position direction – compass | 0°…360° | 0°…360° | 1° | ±5° |
Frequently Asked Questions
Warranty
All measurement instruments sold by AmpX are covered by the manufacturer’s warranty (typically 24 months on the main instrument, 12 months on accessories such as test leads, clamps and batteries). Exact terms are stated on the warranty card supplied with the device.
What you get at AmpX:
- Warranty handled locally in Germany and South Africa — no overseas returns required
- 30-day no-questions-asked return policy
- Local spare parts and repair service for selected brands, like Meatrol.
- Direct technical contact by phone, email or WhatsApp for any warranty issue
Warranty issue? Email info at ampx.co or WhatsApp
Germany: +49 175 246 5195
South Africa: +27 82 940 1858
AmpX Management
Technical support
If you have any difficulty with the meter setup, installation, data analysis, or anything else, we will gladly support you.
Please contact our technical support department for technical support by Email info at ampx.co or WhatsApp:
Germany: +49 175 246 5195
South Africa: +27 82 940 1858
Why buy at AmpX
- Local warranty support, we have offices and warehouses in Germany and South Africa.
- Local parts and repairs, we keep stock of parts and can repair equipment if required.
- Quick delivery, we only sell products that are in stock. Once we receive payment, goods are delivered within one week.
- Specialist support, we specialise in energy logging and reporting. If you have any questions, we are willing and able to support you. If you need assistance with meter setup, installation, data download, or data analysis, we can support you. Access to experienced electrical engineers by phone, WhatsApp and email.
- Peace of mind, you can return any product within 30 days, no questions asked.
- 2-year warranty, one additional year to the normal one year manufacturers warranty.
- Additional value, we might not be the cheapest, but we provide additional value above and beyond just delivering a product.
- Get the expertise and ongoing support that large online marketplaces can’t provide.
supporting professional energy projects in
Europe and South Africa.
Free Demonstration
We can offer you a free demonstration of our energy meters at our premises or within 100 km. If further away, we will need to charge for our travel expenses.
Alternatively we can also do an online video consultation and demonstration.
Click here to request a demonstration if 100 km from our address.
Click here to schedule an online video call and demonstration.
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