Gossen MetraWatt MAVOMASTER User manual

Operating Instructions
MAVOMASTER, MAVOPROBE
Light Metering System 1/09.22

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Device Overview, MAVOMASTER with MAVOPROBE
Display
Keypad,
fluorescent
lettering
Rubber holster
MAVOMASTER, Bottom:
- MAVOMASTER serial number
- Battery compartment with lid
MAVOPROBE, Bottom:
- MAVOPROBE serial number
- ¼" tripod thread
USB port
Light receiver
Calibration
seal

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Thank you for purchasing the MAVOMASTER-MAVOPROBE light metering system from
GOSSEN.
Please read these operating instructions carefully before using the system for the first
time, and keep them in a safe place for future reference.
The light metering system has a variety of basic product features.
▪Various MAVOPROBES can be used with a MAVOMASTER
▪Impact and slip resistant thanks to rugged rubber holster with tilt stand for convenient
readability during tabletop operation
▪Acquisition of minimum, maximum and mean values
▪Relative and integral measurement
▪Grid measurement for the assessment of workplaces
▪Data logger with adjustable time interval
▪Large measured value memory –measured and function values stored in CSV format
▪Prolonged operation with USB interface via PC, mains power pack or power bank
▪MAVOPROBE can be used in combination with MAVOMASTER or autonomously via USB
▪MAVOPROBE extension cord, 3, 5 or 10 meters
▪3-year guarantee

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Content Page
1 Safety Precautions...............................6
2 Disposal..............................................11
3 Initial Start-Up.....................................12
3.1 Inserting the Battery .............................12
3.2 Automatic Shutdown –Continuous
Operation.......................................................12
3.3 Connecting the MAVOPROBE..............13
4 Display Elements and Controls.........14
4.1 Display Elements..................................14
4.2 Controls................................................15
4.3 Operation in the Measuring Mode.........16
4.4 Operation in the Setting Mode..............17
5 Setting Mode.......................................18
5.1 Settings Overview ................................18
5.2 Settings Menu......................................20
5.3 Measuring Menu...................................21
5.4 Storage Menu.......................................22
5.5 Information Menu .................................23
Content Page
6 Measuring Functions..........................24
6.1 REL –Relative .....................................24
6.2 INT –Integral........................................25
6.3 GRID –Grid .........................................26
6.4 B/A –Ratio...........................................27
6.5 %A –Percentage Deviation..................28
6.6 B-A –Relative Deviation.......................29
6.7 LOG –Data Logger..............................30
6.8 PEAK –Extreme Values, Mean Value..31
7 Memory Functions..............................32
7.1 HOLD –Freeze Display........................32
7.2 MEM –Saving Measured Values..........32
7.3 Saving Function Values........................33
7.4 MEM –Deleting Measured Values........33
8 MAVOPROBES ...................................34
8.1 MAVOPROBE LUX 5032 B..................34
8.2 MAVOPROBE LUX 5032 C..................34
8.3 MAVOPROBE MONITOR.....................35
8.4 MAVOPROBE LUX / UVA....................36

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9 USB Interface......................................37
9.1 Firmware Update..................................37
10 Accessories........................................38
10.1 Scope of Delivery, MAVOMASTER ......38
10.2 Scope of Delivery, MAVOPROBE.........38
10.3 MAVOMASTER Accessories................38
10.4 MAVOPROBE Accessories..................39
10.5 Calibration Certificates for
MAVOPROBES.............................................41
11 Service Notes......................................42
12 Technical Data....................................43
12.1 MAVOMASTER....................................43
12.2 MAVOPROBE LUX 5032 B..................44
12.3 MAVOPROBE LUX 5032 C..................46
12.4 MAVOPROBE MONITOR.....................49
12.5 MAVOPROBE LUX / UVA....................51

1 Safety Precautions
Explanation of Symbols
Signal words in warnings indicate the nature and severity of possible consequences if measures for the
prevention of the respective hazard are not implemented. The signal words are defined below and may
be used in this document.
Means that serious to life-threatening personal injury may occur
Means that minor to moderately serious personal injury may occur
Note
Means that property damage may occur
Identifies additional information without reference to danger for persons or
property
Identifies important information that should be read before the product is placed
in service
Warning!
Caution

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▪In the event of malfunction, switch the meter off immediately. If smoke or odors occur for which the
meter is the cause, remove the battery from the meter –risk of fire and injury.
▪Do not use the meter in proximity to flammable or combustible gases, as there is a risk of fire and
explosion.
▪Keep the meter and all accessories out of the reach of children –risk of suffocation and strangulation
due to parts which can be swallowed, as well as carrying straps and cables.
▪Do not dismantle, modify or repair the meter –risk of injury, fire and electric shock.
▪Do not expose batteries to moisture, high heat or open fire, and never short circuit batteries or
attempt to open them. Use only batteries which are recommended for this meter and which
demonstrate no apparent damage. Improper handling of batteries can result in fire, explosion,
serious injury or environmental damage.
▪When measuring hazardous radiation, observe all applicable safety regulations and use the
stipulated protective equipment. Non-compliance may result in significant impairment of health.
Meter settings and stored measured values are retained when the battery is changed. If you wait too
long to change the battery, it may become necessary to reset date and time.
Warning!

▪Remove the batteries from the meter if it’s not used for lengthy periods of time, or when they’re
fully depleted. In particular in the case of depleted batteries, leakage may occur and the meter
may be damaged.
▪Ensure correct polarity when inserting the battery.
▪When plugging in the measuring probe, make sure that the plug and socket guides are correctly
aligned and avoid the use of excessive force. An incorrectly connected probe can damage the
meter or the probe.
▪Do not use the meter where it is exposed to moisture or rain, and do not immerse it in water. Avoid
operation with wet or damp hands as well. This may result in electric shock or damage to the
meter.
▪Do not dismantle, modify or repair the meter. This may result in erroneous measurement results
or damage to the meter.
Caution

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Note
Note identifies precautions or limitations with regard to use of the product. Please read all notes in
order to avoid operating errors.
▪Before starting one-time only measuring tasks, you should first make sure that the meter is
working properly by performing a test measurement.
▪If the meter is used in quality-relevant applications, for acceptance measurements or for
assessments, check to make sure that the meter’s calibration is still valid.
▪If the instrument is subjected to extreme temperature during transport, it requires at least
two hours for acclimatization before it’s switched on.
Limitations
There are several safety precautions and limitations regarding the use of this product. Please
read and understand the following before using the meter.
▪GOSSEN does not accept any liability for damages, costs or lost profits resulting from
malfunctioning or improper use of the meter.
▪GOSSEN reserves the right to make changes of any kind to products or documentation
without issuing prior notice. The latest versions of the documentation, firmware and
software can be downloaded from GOSSEN’s website.

▪Reproduction of product documentation or duplication of any excerpts therefrom
necessitates the express consent of GOSSEN. This applies as well to duplication in any
electronic format and translation into other languages.
Use for Intended Purpose
The meter may only be used under the conditions and for the purposes for which it has been
designed. In this respect, special attention must be given to safety precautions, technical data
regarding ambient conditions and use in dry environments.
Only accessories and replacement parts which have been tested by GOSSEN are permissible for use
in accordance with intended purpose. In case of alterations or modifications implemented by the user,
operating safety can no longer be assured.
Intended Users
The meter is intended for use by the following persons:
▪Persons who monitor and assess the quality of lighting and irradiation systems, lamps,
luminaires and lighting technology products
▪Persons who inspect and assess lighting and irradiation systems for the purpose of
ensuring compliance with design specifications, standards, and regulations
▪Persons who determine and optimize the efficiency of lighting and irradiation systems

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2 Disposal
The legal regulations regarding disposal and recycling of batteries and electronic devices are different
in every country. Please inform yourself about the respectively valid regulations for environmentally
friendly disposal in your country, and proceed accordingly.
In European countries, consumers must comply with the following regulations:
▪Batteries and rechargeable batteries may not be disposed of with household trash. You are
required to return used batteries and rechargeable batteries to a municipal collection point
or to your dealer. You can also return used batteries from our devices directly to us in
quantities usual for end users, or send them to us for disposal after affixing sufficient
postage.
▪Electrical and electronic equipment may not be disposed of with household trash. At the end of
its service life, you are required to return it to an authorized collection point for old equipment, to
the dealer or to the manufacturer.
The above mentioned products may contain hazardous substances which, if released, could result in
severe environmental damage or health impairments. Compulsory return ensures environmentally
friendly disposal, and raw materials contained in old equipment can be recycled.
Identification for Separate Collection of Recyclable Materials / Hazardous Waste in European
Countries
This symbol indicates that the respective product must be disposed of separately,
and not with household trash. The chemical symbols for cadmium (Cd), lead (Pb) or
mercury (Hg) may also be included if their concentrations exceed permissible limits.

3 Initial Startup
3.1 Inserting the Battery
Open the MAVOMASTER’s battery compartment by pressing the cover’s snap lock down in the direction
indicated by the arrow and folding the cover out. Insert the included 1.5 V AA battery (IEC LR6) into the
battery compartment, observing the polarity markings in the battery compartment. Then guide the two
tabs on the battery compartment cover into the recesses provided in the housing and press the cover
until the snap lock engages. The meter is now ready for operation.
The battery level display indicates how much capacity remains in the battery.
Meter settings and stored measured values are retained when the battery is changed. If you wait too long to change
battery, it may become necessary to reset date and time.
3.2 Automatic Shutdown –Continuous Operation
Elapsed time, after which the MAVOMASTER is shut down automatically when no keys are pressed,
can be specified in the settings. Automatic shutdown is inactive whenever the MAVOMASTER is
supplied with power from a PC, a power bank or an external mains power pack via the USB interface.
Automatic shutdown can also be disabled by pressing and holding the HOLD key when switching the
meter on. Continuous operation is indicated by the symbol in the status bar.

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If the meter will be operated continuously for a lengthy period of time, the use of an optional USB mains power pack
or power bank is recommended, because the AA battery has a limited service life.
Display
Continuous Operation
Power Supply
Off
Battery level
On
Battery level
On
Power pack, power bank
On
USB port
3.3 Connecting the MAVOPROBE
The MAVOMASTER has a sensor socket to which different MAVOPROBES with a standard cable
length of 1.5 meters can be connected. Longer sensor cable lengths of up to 10 meters are made
possible through the use of optional MAVOPROBE extension cords. The connected MAVOPROBE is
detected automatically and its data is displayed in the settings menu under “Information”. Only one
MAVOPROBE can be connected at a time. The MAVOMASTER automatically adapts its displays and
operating options to the connected MAVOPROBE.

4 Display Elements and Controls
4.1 Display Elements
Message Window
Function Key Labeling
USB Port
Continuous Operation, Power
Supply Status
Sensor Socket
Function and Designation Field

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4.2 Controls
The meter is operated with 6 keys. Any desired measuring functions can be assigned to function keys
F1 and F2 in the settings menu and the corresponding labeling appears above the respective function
key in the display. The PEAK key is permanently assigned to extreme and mean values. The settings
menu is accessed by pressing and holding the key, and the 6 keys are used for navigation and
selection functions as shown on the right edge of each key.
The HOLD and MEM keys are permanently assigned to memory functions. The keys have different
functions depending on the meter’s operating state. Pressing and holding a key always terminates the
respective measuring function and deletes values.
MENU
Measuring Function
Measuring Function
Memory Function

4.3 Operation in the Measuring Mode
Key
Status
Press
Function
Off
Short
Switch meter on
On
Short
Switch meter off
On
Long
Setting mode
F1, F2
Inactive
Short
Activate assigned measuring function, reset all extreme values
Active
Short
Terminate assigned measuring function, save results if required
HOLD
Measure
Short
Freeze measured value display
HOLD
Short
Return to continuous measured value display
PEAK
Measure
Short
Display and scroll through extreme values –MIN, MAX, AVG
Long
Reset extreme values
MEM
Measure
Short
Save measured value
Long
Display measured values, switch between data sets and folders with
▲/ ▼/ keys
MEM
Short
Return to continuous measured value display

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4.4 Operation in the Setting Mode
Key
Function
Key
Function
Return to measuring mode
Apply settings
▲
Move cursor up
►
Down one menu level
▼
Move cursor down
◄
Up one menu level

5 Setting Mode
Various basic settings and presettings can be entered for the MAVOMASTER in the setting mode. The
setting mode is entered from the measuring mode by pressing and holding the key.
►
Long Short
After selecting a parameter, it’s displayed inversely and the display alternates between the parameter
and the currently selected value. The black line at the right edge of the display indicates that the menu
contains additional parameters.
5.1 Settings Overview
The following table provides an overview of the various parameters which are grouped thematically in
menus, as well as their setting options and default settings.
Setting
Default Setting
Selection Options
Time/Date
00:00 01.01.2020
Language
English
English –German
LCD illumination
On
Off –On –Hold –Auto
LCD brightness
60%
10% to 100% in steps of 10%
Auto shutdown
30 s
Off, 10 s, 30 s, 1 min., 2 min., 5 min.
Default settings
Restore default settings: No –Yes

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Measurement
System of units
lx –cd/m²
lx –cd/m², fc - fL
Irradiation reference
_/cm²
_/cm², _/m²
Function key F1
REL
REL, LOG, GRID, B/A, %A, B-A, INT
Function key F2
LOG
REL, LOG, GRID, B/A, %A, B-A, INT
Storage
Log interval
00:00
HH:MM:SS
Filename
Number
Time, number
Decimal separator
Comma
Period, comma
Time format
24 h
24 h, 12 h
Date format
DD.MM.YYYY
DD.MM.YYYY, MM/DD/YYYY, YYYY/MM/DD
Information
Serial number
22C10082
Hardware
Version 5
Firmware
Version 1.0.0
Probe type
M527G –5032 B
Probe serial number
0C10082
Probe hardware
Version 2
Probe firmware
Version 1.0.0
Temperature
21.8° C
Battery voltage
1.42 V

5.2 Settings Menu
Time/Date
When saving data, the meter uses time and date for the filename and the point in time at which the
measurement was performed. If time is not set by the user, time and date begin with the factory setting
after inserting the battery, and is then used for data storage. If the battery is depleted, the integrated
real-time clock continues to run for approximately xx hours before it stops. In order to ensure that date
and time are not affected, it’s advisable to replace a depleted battery as soon as possible.
Language
The meter’s menu can be set to the desired language.
LCD Illumination
LCD illumination can be adjusted individually. In the hold function, it’s only activated in the hold mode
in order to read measured values in dark environments without influencing the measurement. In the
auto mode, display illumination is only activated in dark environments.
LCD Brightness
LCD illumination brightness can be individually adjusted from 10% to 100% and has a direct effect on
the battery’s service life.