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

GMC-I Messtechnik GmbH

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

GMC-I Messtechnik GmbH

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.