INSTRUCTION MANUAL Installation Directions

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INSTRUCTION MANUAL

Model 59150 Light Meter

TABLET OF CONTENTS

TITLE

1. FEATURES

2. SPECIFICATIONS

3. PANEL DESCRIPTION

4. OPERATING INSTRUCTION

5. BATTERY REPLACEMENT

1. FEATURES

- Easy to use with pock size and light weight

- 3 1/2 digital LCD display with LUX, fc, LOBAT, MAX, HOLD indication

- Accurately display light level in terms of Foot Candles (Fc) or Lux over wide

range.

- Measures from 0 to 50000 Lux/ Fc in four ranges with resolution 0.1Lux/Fc .

- Max Hold and Data Hold

- Auto power off

2. SPECIFICATIONS

Display: 1999 counts LCD display with LUX, fc, LOBAT, MAX, HOLD indication

Polarity: Automatic, (-) negative polarity indication.

Over-range: “1” mark indication.

Low battery indication: The “BAT” is displayed when the battery voltage drops below the

operating level.

Measurement rate: 1.5 times per second, nominal.

Storage temperature: -10 oC to 60 oC (14

o

F to 140

o

F) at < 80 % relative humidity

Auto Power Off: Meter automatically shuts down after approx .15 minutes of

inactivity.

Power: One standard 12V, A23 battery.

Dimensions/Wt.: 188 (H) x 64.5 (W) x 24.5 (D) mm/160g

Photo Detector Dimensions/Wt.: 115 X 60 X 27 mm/80g

Light

Measuring Range: 200, 2000, 20000, 50000 Lux/fc (1Fc=10.76 Lux)

Accuracy: + 5% rdg + 10dgts (< 10,000Lux/fc)

Accuracy: + 10% rdg + 10dgts (> 10,000Lux/fc)

(20,000lux range reading x10, 50,000lux range reading x100)

Overrate Display: Highest digit of “1” is displayed.

(calibrated to standard incandescent lamp at color temperature 2856 k).

Repeatability: + 2%.

Temperature Characteristic: +0.1% / oC.

Photo detector: One silicon photo diode with filter.

3. PANEL DESCRIPTION

1. LCD display: 1999 counts LCD display with LUX, fc, LOBAT, MAX, HOLD

indication

2. Power /function /range switch: Turn power ON or OFF and select

measurement function and ranges.

3. Photo Detector: long life silicon photo diode inside

4. MAX. HOLD: If you press the MAX. button, the maximum reading will be held.

Press once again the button, will release the hold and allow a

further measurement.

5. DATA HOLD: The reading will be held when Data Hold button Switch is pressed.

If the button Switch is pressed once again, will release the hold

and allow a further measurement.

6. Function button: Selects measurement functions of Lux or fc

4. OPERATING INSTRUCTION

Measuring Light

1. Turn the power/function/range switch to select the range to desired (x1 lux/fc ,

x10lux/fc, x100lux/fc ) range.

2. Remove the photo detector to light source in a horizontal position.

3. Read the luminance nominal from the LCD display.

4. Over-range: If the instrument only display one “1” in the M.S.D. the input signal is

too strong, and a higher range should be selected.

5. When the measurement is completed. Replace the photo detector from the light

source.

6. Spectral sensitivity characteristic: To the detector, the applied photo diode with

filters makes the spectral sensitivity characteristic almost meet C.I.E. (International

Commission on Illumination) photopia curve V (λ) as the following chart

described.

100% (Relative Sensitivity) Spectral Sensitivity

80% V(λ)

60%

40%

20%

0

400 500 600 700

Wavelength (nm)

7. Recommended Illumination:

Locations Lux

*Office

Conference, Reception room. 200～750

Clerical work 700～1,500

Typing drafting 1000～2,000

*Factory

Packing work, Entrance passage 150～300

Visual work at production line 300～750

Inspection work 750～1,500

Electronic parts assembly line 1500～3,000

*Hotel

Public room, Cloakroom 100～200

Reception, Cashier 200～1,000

*Store

Indoors Stairs Corridor 150～200

Show window, Packing table 750～1,500

Forefront of show window 1500 ～3,000

*Hospital

Sickroom, Warehouse 100～200

Medical Examination room 300～750

Operating room

Emergency Treatment 750～1,500

*School

Auditorium, Indoor Gymnasium 100～300

Class room 200～750

Laboratory Library Drafting room 500～1,500

5. BATTERY REPLACEMENT

If the sign “BAT” appears on the LCD display, it indicates that the battery should be

replaced. Open the battery case and replace the exhausted battery with new battery. (1

x 12V battery, A23 or equivalent )