Gossen MetraWatt SECULIFE IM Operating Instructions Manual

GMC-I Messtechnik GmbH

Operating Instructions

SECULIFE | IM 15161
Luminance Monitoring 1/7.04

GMC-I Messtechnik GmbH

Key pad

SECULIFE IM

Light measuring probe

Display
Light sensor

USB Port

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Page Page

1 Applications..............................................4

2 Display................................................... 5 5 USB Port –

2.1 The elements of the display..................... 5 Standard Software............ 12

2.2 Key pad................................................... 5

6 Accessories................................ 13

3 SECULIFE IM Operation.................. 6 6.1 Standard equipment..................... 13

3.1 Preparation............................................. 6 6.2 Optional accessories.................... 13

3.2 Duration of display - 6.3 Calibration Certificate................... 13

Continuous operation.............................. 6

7 Servicing and Repairs................14

4 Functioning of the SECULIFE IM.... 7

4.1 Switching on – Making Measurement....... 7 8 Specifications..............................14

4.2 Selecting the desired measuring unit –

cd/m2 or fL ......................................... 7 Declaration of conformity...........17

4.3 Overload signal........................................ 7

4.4 Memory functions..................................... 8

4.4.1 „HOLD“ Display Hold Function................. 8

4.4.2 „Mem“ - Storing measurement value

in memory........................................... 9

4.4.3 „Mem Edit“ - deleting a value in memory

and enter a new value....................... 10

4.4.4 „Mem Recall“ - Data Memory Recall....... 11

4.4.5 „Mem Clear“ - Clear memory.................. 12

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1 Applications

The SECULIFE IM Luminance Meter is a handy, easy to use and high precision measuring instrument.
It allows the accurate measurement of the luminance in cd/m² or fL. The SECULIFE IM is ideally suited
for contact measurements with the light measuring probe placed direct on luminous or backlighted
surfaces (monitors, TV sets,light boxes, light panels). When combined with the SECULIFE IA
Attachment (optional accessory), it can be used for spot metering the luminance at a distance from 34

cm to , the measuring angle being 1 degree. (Monitors, with the ambient light being taken into
consideration in the measurement - lighting and illumination of work stations, streets, airports,
museums, projection screens). The light sensor is color corrected, i.e. its spectral responsitivity has
been matched to the spectral photonic vision of the human eye (V ). The accuracy class for luminance
meters has been defined in the Standard Specification DIN 5032, Part 7. The SECULIFE IM fully

complies with the requirements of Class B.Consequently all the important types of light can be

measured with high precision, without the necessity to apply additional corrrection factors. The
SECULIFE IM is provided with a data memory with 100 measurement value locations, which can be
read and processed direct with the keys and display, but also through the integrated USB Port and the
standard software provided with the instrument.

cd/m² = Candela per m² 1 cd/m2 = 0.2919 fL = 0.0929 cd/ft

2

fL = footLambert 1 fL = 3.426 cd/m2 = 0.3183 cd/ft

2

1 cd/ft2 = 10.76 cd/m2 = 3.142 fL

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2 Display

2.1 Description of display 2.2 Key pad

1 Display of measured value and 1 Switching on/off

Memory indication 2 Range key – Memory/Measuring range
2 Measurement Unit 3 cd/m2 fL- Select measurement unit
3 Display „HOLD„ indication 4 Hold - Function
4 Multiplying factor for measurement value 5 Range key – Memory/Measuring range
5 Auto ranging – automatic range selection 6 Mem – Memory key
6 Low Battery

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3 Functioning of the SECULIFE IM

3.1 Preparation

First remove the snap-on cover and open the battery compartment at the back of the meter. Insert the
battery included with the meter (1.5 V size AA, IEC LR6) in the battery compartment.
Care should be taken to place the battery correctly according
to the polarity indications “+“ and “-“ in the battery compartment.
When the battery warning symbol ( ) appears in the display,
the battery must be replaced.
The values in the measurement data memory and also the preset
individual values will be maintained, even when the battery is changed.

3.2 Duration of Display – Continuous operation
If for approx. 4 minutes none of the keys of the SECULIFE IM is pressed, the instrument will be
switched off automatically. During the last 4 seconds before automatic switch off an acoustic signal will
sound. By pressing any one of the keys, you can override the automatic switch off. When the
instrument is switched off, the values stored in the data memory and also the preset individual values
will be maintained. You can override the automatic switch off, when switching on the instrument and
simultaneously keep the HOLD key depressed.
The measuring unit (cd/m² or fL) in the display will blink and indicate that the continuous operation mode
is on.

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4 Using the SECULIFE IM

4.1 Switching on – Making Measurement
Press the on/off key and the SECULIFE IM is immediately in the measuring mode and is measuring at

the rate of 2 times per second. The instrument is in the function „AUTO“, i.e. the SECULIFE IM will
select the best suited measuring range for the existing light level. By pressing one of the range keys,
one of the measuring ranges can be locked. Browsing up or down through additional measuring ranges
is accomplished by briefly pressing one of the range keys. If both keys are pressed and held
simultaneously, the instrument is returned to „AUTO RANGING“.

4.2 Selecting the desired measurement unit cd/m2 or fL
Use the key cd/m2 fL to select the desired unit for the read-out – cd/m² or fL.

4.3 Overload Display

When exceeding one of the measuring ranges „OL“ (Overload) appears in the display.

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4.4 Memory Functions

The SECULIFE IM is provided in addition to the „Display Hold“ also with a memory for data up to 100
measurement values.
This function allows several measurement operations in the field and read-out at a later time. The data
stored in the memory will be maintained, even when the instrument is turned off or the battery is
changed.

4.4.1 „HOLD“ Display Hold Function

The display HOLD function allows you to measure even at very low light levels, where it would be
difficult to read the display. By pressing the HOLD key, the last value measured is held on the display to
be read at brighter light. Pressing the HOLD key again will return the SECULIFE IM to the measuring
function.

The function HOLD is the basic function for all the memory functions.

Hold

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4.4.2 „Mem“ – Storing measurement value in memory

The measurement value to be memorized is locked by the Hold
key in the display. By pressing the key Mem you will enter the
value to be stored in the next free memory location. An acoustic
signal confirms „value stored in memory“.
The display indicates the stored measurement value alternating
with the number of the memory location for a few seconds.
Subsequently, the SECULIFE IM will return to the measuring
function. When the memory is completely filled, the display will
show „FLL“.

Hold

Mem

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4.4.3 „Mem-Edit“ – Deleting a value in memory and entering a new value

The Mavolux offers the function „Mem Edit“ for correcting a

value stored in the memory. Measure again, press the Hold key
and the new value is locked. Then by pressing one of the range
keys, you can browse through the memory.

At the memory location to be
corrected press now the key
Mem. An acoustic signal confirms

„value stored in memory“. In the

display the measurement value
stored is indicated for a few
seconds alternating with the
number of the memory location.
Subsequently the
SECULIFE IM will return to
measuring function.

Hold

Mem

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4.4.4 „Mem Recall“ –Data memory Recall

Start in the function „Measuring“ and press the key Mem.
The last memory location filled will be indicated first.

Press one of the range keys to browse through the data
memory. The current memory location is indicated in the display
alternating with the measurement value stored in the memory.

By pressing any one of the other
keys or when for about ten
seconds no further memory data
will be recalled with the Range
keys, the SECULIFE IM will
return to the measuring function.

Mem

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4.4.5 „Mem-Clear“ – Clear memory
The SECULIFE IM must be in function „HOLD“.
When pressing simultaneously the Range keys, you clear the complete measuring data memory. The
cancelling is confirmed by an acoustic signal and three dashes in the display.

5 USB Port – Standard Software
The SECULIFE IM is equipped with a USB Port which allows the meter to be connected to a PC with
the USB cable (supplied).
The CD Rom supplied with the SECULIFE IM contains, among other information, a Standard Software
which allows you to start the PC operation immediately.
More details about the PC operational functions are also available on that CD-Rom.

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6 Accessories

6.1 Standard Equipment

- Leather carrying case

- Battery

- Standard Software on CD-ROM

- USB-cable

- Instruction Manual

6.2 Optional Accessories

- SECULIFE IA (ordering no. M688D)

For precision spot metering of the luminance, non contact, at a distance from 34 cm to , with
measuring angle of 1 degree. The ambient light is being taken into consideration in the
measurement. The light sensor is color corrected, i.e. its spectral responsitivity is adapted to the
photonic vision of the human eye. (V ) according to DIN 5032, Part 7, Class B. The
SECULIFE IM with attached SECULIFE IA is especially suited for inspecting and constancy testing
of viewing monitors in medical imaging applications according to DIN 6868/57. Other applications:
Projection screens, street surfaces and street lighting, illumination of tunnels and sport areas.

- CALCULATOR, calculating disk (ordering no. 5999V0380)

For converting the value measured with the SECULIFE IM into photographic shutter
speed/f-stop combinations based on the film speeds.

6.3 Calibration Certificate (Optional)

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Calibration reference: Scientific Standard Lamps, type Wi 41G of the PTB (Physikalische Technische
Bundesanstalt Braunschweig – National Standard Institute of Germany). Depending on how the
instrument is being used we recommend a recalibration interval between 12 and 18 months. For this
purpose please contact our Calibration Service Department (telephone [phone]).

7 Servicing and Repairs

No special maintenance is required, if the SECULIFE IM is handled correctly.
Keep the outside surfaces clean. Use a slightly dampened cloth for cleaning. Do not use cleansers,
abrasives or solvents.
Should the instrument nevertheless not work to your satisfaction or if you will require repeated
calibration with Test Certificate, please send the SECULIFE IM to:

GOSSEN Foto- und Lichtmesstechnik GmbH
Lisa-Ammon-Str. 22
90471 Nürnberg

Phone: [phone]
8 Technical Data
Light Sensor Silicon photo diode with V () filter
Classification Class B according to DIN 5032, Part 7 (CIE 69)
Measuring Rate 2 measurements per second
LCD display 50 mm x 25 mm

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Read-out 7 segments, 31/2 digits, 13 mm
Overload signal „OL“ in the display

Memory for measurement values 100 memory locations, display indication „FLL“ = memory full
Port USB 1.1

Power Supply

Battery one 1.5 V alkaline – manganese cell, size AA (IEC LR 6) or suitable rechargeable

battery
Battery life approx. 45 hours continuous operation with alcaline – manganese battery
Battery test Automatic display of „ „ symbol, when battery voltage drops below 1.0 Volts
External When the SECULIFE IM is connected to a PC, power will be supplied by the PC via

the USB cable.

Weights and Dimensions

Housing Plastics
Dimensions Measuring instrument: 65 x 120 x 19 mm (2,56 x 4,73 x 75“)

(without carrying case)

Measuring Probe: 31 x 105 x 30 mm

Weight Measuring instrument with measuring probe
approx. 265 g – without battery
Measuring probe Aperture: approx. 18.5 mm 

Sensor surface area: 6,5 x 6,5 mm
Length of cable approx. 1.5 m; available in 3m, 5m and 10 meters, on special order.

Electromagnetic Compatibility (EMC)

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The SECULIFE IM meets the Specifications 89/336/EWG dt. 01.01.1996

Characteristics SECULIFE IM

Meas. Quantity

Measuring Range

Resolution

Resolution

in Candela/m2 (cd/m2)

in footLambert (fL)

in cd/m

2

in fL

Luminance

I

0.01... 19.99

0.001... 1.999

0.01

0.001

II

0.1... 199.9

0.01... 19.99

0.1

0.01

III

1... 1 999

0.1... 199.9

1

0.1

IV

10... 19 990

1... 1 999

10

1

Most Important Error Limits SECULIFE IM

Characteristics

Admissible Error per
DIN 5032 Klasse B

Maximum Error

SECULIFE IM

V()-Matching (f1)

6%

 3.0%

Linearity (f3)

2%

 1.0%

Adjustment Error (f11)

1%

 0.8%

Total Error (f

ges

)

10%

 8.0%

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EG - KONFORMITÄTSERKLÄRUNG

DECLARATION OF CONFORMITY

Dokument-Nr./ Document.No.: 103/2004

Hersteller/ Manufacturer: GOSSEN Foto- und Lichtmesstechnik GmbH
Anschrift / Address: Thomas-Mann-Str.16-20

90471 Nürnberg
Produktbezeichnung/ Product name: Leuchtdichtemessgerät/Luminance Meter

Typ / Type: MAVO-MONITOR USB
Bestell-Nr / Order No: M504G / M506G

Das bezeichnete Produkt stimmt mit den Vorschriften folgender Europäischer Richtlinien überein, nachgewiesen durch die vollständige Einhaltung folgender Normen:
The above mentioned product has been manufactured according to the regulations of the following European directives proven through complete compliance with the
following standards:

Nr. / No.

Richtlinie

Directive

73/23/EWG
73/23/EEC

Elektrische Betriebsmittel zur Verwendung
innerhalb bestimmter Spannungsgrenzen

- Niederspannungsrichtlinie
–Anbringung der CE-Kennzeichnung : 2003

Electrical equipment for use within certain voltage
limits

- Low Voltage Directive ­Attachment of CE mark : 2003

EN/Norm/Standard

IEC/Deutsche Norm

VDE-Klassifikation/Classification

EN 61010-1 : 1993
EN 61557-3 : 1997

IEC 61010-1 : 1992
IEC 61557-3 : 1997

VDE 0411-1 : 1994
VDE 0413-3 : 1997

Nr. / No.

Richtlinie

Directive

89/336/EWG
89/336/EEC

Elektromagnetische Verträglichkeit

- EMV - Richtlinie

Electromagnetic compatibility

-EMC directive

Fachgrundform / Generic Standard: EN 61326 : 2002

Nürnberg, den 24. Juni 2004
___________________________________________________ _____________________________________
Ort, Datum / Place, date: Vorsitzender der Geschäftsführung

Diese Erklärung bescheinigt die Übereinstimmung mit den genannten Richtlinien, This declaration certifies compliance with the above mentioned
beinhaltet jedoch keine Zusicherung von Eigenschaften. Die Sicherheitshinweise directives but does not include a property assurance. The safety
der mitgelieferten Produktdokumentationen sind zu beachten. notes given in the product documentations which are part of the

supply, must be observed.

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GMC-I Messtechnik GmbH is also a leading provider for other interesting light measuring instrumemts:

-SECULIFE IT 5032 C USB: Digital precision instrument for measuring the illuminance in lx or fc,
classified acc. to DIN 5032, Part 7 and CIE 69 in Class C. Ideally suited for use in industry, trade
institutes and inspection authorities, also for very high light intensities.

-SECULIFE IT 5032 B USB: Digital precision instrument for measuring the illumenance in lx or fc,
classified acc. to DIN 5032, Part 7 and CIE 69 in Class B. Especially wide measuring range and high
sensitivity for inspection and certification, suited for checking emergency lighting, but also for very high
light intensities.

-SECULIFE IS: For monitoring the ambient light in the surroundings of monitors according to the
IEC 61223-2-5 (QS-RL dt. 20/11/2003). The use of the SECULIFE IS allows extending the required
repeat test intervalls of the „veil luminance“ and the „maximum contrast“ at medical imaging displays –
to six month.

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Notes

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Product Support

If required, please contact:

GMC-I Messtechnik GmbH
Product Support Hotline
Phone [phone]
Fax [phone]
E-Mail support@ gossenmetrawatt.com

Edited in Germany • Subject to change without notice •A PDF version is available on the Internet

Phone [phone]
GMC-I Messtechnik GmbH Fax [phone]
Südwestpark 15 E-Mail [e-mail]
90449 Nürnberg•Germany www.gossenmetrawatt.com