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Photovoltaic Data Logger MacSolar
Photovoltaic-data logger with internal sensor, determines the energy efficiency and the optimal facility for solar plants on-site

The photovoltaic data logger MacSolar is the ideal hand-meter for solar engineers, architects and hobby solar installers as a photovoltaic data logger on-site. This Photovoltaic data logger enables determining the light intensity and the temperature. Thus the photovoltaic data logger calculates the energy yield and several other parameters (electricity, voltage, at working point) with very high accuracy. Thus a statement about compilation and construction of a photovoltaic complex is enabled due to the photovoltaic data logger. The measurement of light intensity is performed via monocrystalline silicium solar cells that can additionally provide the operation energy for the photovoltaic-data logger. The processor integrated in the photovoltaic-data logger ensures the preservation after calibration of every photovoltaic-data logger in the solar-simulator. In all measurement modes eligibly the measurands Ptot (W/m2), Pn, Un, In (in %) or T (in °C) will be displayed at the photovoltaic-data logger. The measuring data stored in an internal storage of the photovoltaic-data logger can be transferred to a computer via the special software. This photovoltaic data logger was designed for on-site operation and therefore has a weather-resistant and robust synthetic enclosure. Its compact measures allow a comfortable one-hand operation. If you have further questions concerning the photovoltaic data logger, take a look at the following technical data or call our hotline: UK customers +44(0) 23 809 870 30 / US customers +1-410-387-7703. Our technicians and engineers would be pleased to inform you concerning photovoltaic data logger and all other products in terms of regulation and control or scales and balances by PCE Instruments.

Photovoltaic Data Logger MacSolar  Photovoltaic Data Logger MacSolar  Photovoltaic Data Logger MacSolar  Photovoltaic Data Logger MacSolarSoftware.  Technical specifications for the photovoltaic data logger MacSolar  Information of the photovoltaic data logger MacSolar

The photovoltaic data logger MacSolar

- Power supply via 2 integrated PV- cells
- Enables comparative solar measurements
- Max, min indication at the display
- Calibrated PV-cell
- With montage angle for orientation

- On-site measurement and long-term measuring
- Large LCD- display
- Up to 19.000 measuring values storable.
- Calculation of solar profit
- Measurement of solar radiation in W/m2

Technical specification of photovoltaic-data logger

  Ptot Pn Un In Time


W/m2 ºC % % % hours


0 ... 1500 -40 ... +85 0 ... 150 0 ... 150 0 ... 150 0 ... 9999


1 0.1 0.1 0.1 0.1 0.1 / 1

Max. deviation

< 4 % 1 digit (Ptot) range 50 ... 1000 W/m2 / AM 1.5 spectrum/ radiation in straight axis 
(optional with ISO calibration certificate < 1 % 1 digit) 

Power requirement (sleep/ active mode)

0.6/4 mW

Effective output of integrated solar module

180 mW

Data transfer

HID interface

Environmental temperature range

-20 ... +50 °C

Max. humidity

90 % RH


13 mm LCD- Display (max. indication 199.9), contrast adjustable

Data memory capacity

256 kBit (stores 12000…19000 measurements)

Sampling rate

10 seconds (fixed)

Data storage

Averaged values per hour up to 15 months

Operation supply

via own solar cell


130 x 90 x 30 mm 


170 g

Approval mark

CE / EN 50081, 50082, 55014, 55022, 60068, 60529, IEC68

Typical applications for photovoltaic-data logger

1. Solar- direct measurement on-site with photovoltaic-data logger
With the photovoltaic-data logger MacSolar a direct measurement of light intensity and temperature can be performed at a defined position. Those measuring values can be consulted amongst others for checking on degree of efficiency of PV modules or solar thermic facilities. At the display of the photovoltaic-data logger the optional adjusted indicators light intensity and module temperature are shown. The values can be temporary stored by pressing the HOLD key. 

2. Simulation of temperature, efficiency, voltage and electricity of PV modules
With the actual measured indicators light intensity and temperature the Photovoltaic-data logger calculates internally the module temperature that arises from an adjustable installation of PV modules at the Photovoltaic-data logger. The image shows the module- excess temperature of a PV-isolation glass façade during the radiation (at 25°C ambient temperature).

Module temperature and radiation

3. Long-term measurement with the photovoltaic-data logger
For measurements during longer time periods the photovoltaic-data logger MacSolar is equipped with an internal arithmetic-average-function and a data logger. In the following some typical measurement applications are displayed, that can all be implemented with the photovoltaic-data logger. For meteorological purposes the determination of global radiation, mostly in horizontal position, for a long time period is necessary. Therefore the photovoltaic-data logger MacSolar is to be positioned accordantly by means of the montage frame included in delivery. Equally the photovoltaic-data logger is applicable for long-term measurements of surrounding temperature. In that case the sensor has to be applied in a shadowed position. 

4. Entry analysis of photovoltaic-data logger
For determination of solar radiation intensity and temperature special locations, like e.g. forest, fog zones, interiors, positions with complicated clouding, are predestined locations for the photovoltaic-data logger. Normally in those cases the estimation of the output for longer terms, e.g. a year, plays an important role. Therefore the software-simulation program of the photovoltaic-data logger is useful, but has to be partially on large expense and with rough estimation adjusted to such situations. In contrary more accurate measuring data can be achieved due to comparative measurement with two MacSolar photovoltaic-data loggers: one of those has to be installed at the specific measuring location and the other reference device horizontal in the open. The data gained by the reference photovoltaic-data logger has to be standardized after the measurement to meteorological weather data that is existent over a long-term period (e.g. 10 years). Then the measuring data that the other photovoltaic-data logger gained at the specific location have to be multiplied with the standardization factor in order to gain the efficiency prognosis for the measured time period. 

Relative efficiency and radiation

5. Comparative measurements with the photovoltaic-data logger 
A special application of the photovoltaic-data logger MacSolar is comparative measurement with several meters that are installed at different locations. This method is especially adequate for objects, for which several locations are provided to install the solar plant and no explicit conclusion about the most beneficial location is available (e.g. south-east, south-west, roof partially shadowed). Usually such tasks should be performed by means of software simulation programs. Despite of this in multiple cases a checking of the actual conditions via the photovoltaic-data logger serves best as well, especially in cases, where a simulation would result in rough inaccuracy (e.g. in case of complex shadowing). As a matter of principle several photovoltaic-data loggers MacSolar are used simultaneously for the concerning location. Even in this case aside from data logger- measurements for a quick on-site check, arithmetic averages of the single devices can be compared, too. 

6. Solar radiation
The photovoltaic-data logger recognizes the whole solar radiation due to its calibrated PV-cell, i.e. direct radiation as well as diffuse radiation of the atmosphere. The largest share of energy of solar radiation that reflects from the earth's surface lies in the infrared visible part of the spectrum due to the fact that ultraviolet radiation is absorbed by the atmosphere. Solar radiation diversifies due out the year caused by the varying angle of the sunlight streaming between summer and winter. 

A photovoltaic display model

Delivery content of photovoltaic-data logger

1 x photovoltaic-data logger MacSolar full version, 1 x internal sensor, 1 x internal measuring storage, instruction manual

Additional to photovoltaic-data logger
- Transfer and evaluation software MacView 2.0 with USB cable in package

With the full version of MacView the data can be read-out from the MacSolar and evaluated afterwards. MacView 2.0 displays the data measured with MacSolar graphical and tabular. Above all the radiation values gained with MacSolar can be used to generate an efficiency prognosis of PV-systems. The new intuitive interface alleviates working with MacView from the beginning. The MacView full version will be delivered with an extensive solar module (>26,000) and power inverter database (>5,000). 
The data will be transferred via a HID cable from the MacSolar storage to a computer. The wired interface allows a quick and interference-free data transfer and also controlling the MacSolar from a computer. 



System requirements:
MacView 2.0 runs on Windows XP, Windows Vista and Windows 7.0

Evaluation of the photovoltaic data logger MacSolar

Software: Photovoltaic data logger MacSolar

Transferring data of the photovoltaic data logger MacSolar
- Configuration of MacSolar
- Intuitive user interface
- Indication/ Switch between °C and °F
- Selected filtration of measuring data and of
  calculated data tabular as well as graphically 
- Direct printing of forms and graphics
- Database
- Storing of projects in project database
- Expandable module and power inverter database
  for simulation
- Assistant to generate efficiency prognosis based
  on measuring data
- Comparison of 2 projects or measuring periods
- Comparison of temperature, voltage, electricity
  and efficiency graphs
- Tabular and graphic display of measured and
  calculated data during a specific elective time
- Deficit analysis of simulating construction with
  adjustable factors and efficiency characteristics.
- Export of measuring data in an excel file.
- Summarized, average and maximal resulting
  values (radiation, temperature and output 
- Direct readout of MacSolar
- User-friendly menu
Technical information about the photovoltaic data logger MacSolar return to homepage.

Further products in terms regarding 'photovoltaic data logger'

- PCE-SPM 1 Photovoltaic Data Logger
  (Photovoltaic data logger 
to measure solar radiation in W/m²; with memory and
The photovoltaic data logger PCE-SPM 1
- TM 750 Photovoltaic Data Logger   
  (Photovoltaic data logger with Measurement range of 0 … 2000 W/m², Sampling rate
   0.25 sec.)
The photovoltaic data logger TM 750
Here you will find an overview of all the measuring instruments available at PCE Instruments.

PCE Instruments UK Limited
Units 12/13 Southpoint Business Park
Ensign Way, Southampton
United Kingdom, SO31 4RF
Phone: +44(0) 23 809 870 30
Fax: +44(0) 23 809 870 39

PCE Americas Inc.
711 Commerce Way suite 8
Jupiter 33458 FL
Phone: +1-410-387-7703
Fax: +1-410-387-7714

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