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MP-11 I-V Checker

The robust portable battery operated MP-11 I-V Checker enables the operator to perform accurate I-V performance measurements and inspection of PV modules or arrays on site. For direct control of the measurement functions and analyzing measurement results the Main Unit has a key-pad and Graphical LCD display. The MP-11 offers an all in one measurement solution to make PV module testing very easy, hence all required accessories like the radiation sensor, temperature sensors, cables and PC software for control and extended data analysis are included.

The MP-11 I-V Checker is capable to measure I-V curves based on the parameters (Vmax, Imax, Pmax, Voc, Isc, FF, Tmod, ηeff) of any PV module types and arrays, also called strings. It is highly suitable during PV module installation, for making routine checks for inspection of energy yield, tracing module performance and potential defects and general maintenance checks. The MP-11 can be used for almost any *Module type as long as the output fits in the range (10 – 1000V / 100mA - 30A / 10W - 18 kW).

The MP-11 measuring principle is based on the capacitive electronic load method, which makes it a compact measurement device with a wide measuring range (Voltage, Current and Power). With traditional I-V curve tracers, sensors had to be at the place where the PV module is situated, which consequently requires long cables between the PV module and I-V curve tracer. By using the remote Sensor unit installed near the PV module accurate measurements can be performed and data can be stored on board. The MP-11 is unique due to the integrated removable Sensor Unit. The Sensor Unit contains an integrated high precission pyranometer, which based on a Si Photodiode and data logger to store the measured data of the internal or external sensor and 2 temperature sensors. It is used to measure the solar irradiance in simultaneously with the PV module, PV module back surface temperature and ambient temperature. The input terminals for external sensors are available on the Sensor Unit to connect any EKO pyranometer type, such as MS-802 (ISO Secondary standard), MS-402/MS-410 (ISO First Class), MS-602 (ISO Second Class) or reference cell as sometimes required by directive or spectral match with the modules installed. With the built in data logger the measurement data can be recorded for maximum one day. After the test the data can be easily transferred from the Sensor Unit to the Main Unit by connecting it trough the modular cable.

The Main Unit is capable of measuring, displaying and analyzing data, all functions that can be accessed through the front panel keypad. Up to 300 I-V curves can be stored on board, which is mostly sufficient for one day. On top of that extensive data analysis and data storage and data format conversion to a (.CSV) file format can be done using the PC with the MP-11 control software. The I-V curve measurement data displayed on the Main Unit are automatically converted into STC values, know as Standard Test Conditions (STC) values complying to the IEC 60981 and JIS C8914 Standard. This way measurement values converted to STC values can be better quantitatively compared when obtained during different environmental or atmospheric conditions (Global radiation, Temperature) or inter compared between different types of modules.

For the ease of use most common physical constants like Alpha, Beta, Kappa and Rs are pre-set and can be selected to make the STC conversion. For more specific module types those parameters and other module settings can be customized and stored as a personal file.


  • Portable and battery operated
  • High power input range 18kW
  • Quick measurement time
  • Auto measurement schedule
  • Remote sensor unit with data logger (Irradiance and Module temperature)
  • USB interface for PC control
  • Excel report functions
MP-11 I-V Checker


Specifications MP-11
Measuring range Voltage: 10V - 1000V
Current: 0,01A - 30A
Power: 10W - 18kW
Data points 400 points / I-V curve
Data storage 300 IV curves (Internal Memory)
Input Tester: PV module/array x 1(2 cables to PV string)
Sensor Unit: Pyranometer or reference cell, Thermocouple x 2
Interface USB x 1(PC), RS-485 x 1(Sensor Unit)
Measurement parameters I-V curve, Pm, Isc, Voc, FF, Ipm, Vpm, Solar irradiance, Temperature x 2, STC conversion, Differential coefficient of I-V curve
Dimensions Tester: W:230mm x L:320mm x H:180mm
Sensor Unit: W:210mm x L:85mm x H:55mm
Weight Tester: 2.5 kg, Sensor Unit: 0.5 kg, Battery Box for main unit: 0.5 kg
Power supply Tester: AA size battery x 8 or AC adapter DC9V, 1.0A
Sensor Unit: 006P type battery x 1 (9V)
PC Operating system Windows XP/Vista/7/8/8.1
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