REED ST-1301 Manual de usuario

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Pantone 485 & 123

485 = (0/100/100/10)

123 = (0/18/100/0)

Model ST-1301

Light Meter

Instruction

Manual

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reedinstruments

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Pantone 485 & 123

485 = (0/100/100/10)

123 = (0/18/100/0)

Table Of Contents

Features...................................................................................................... 2

Specications............................................................................................. 3

Panel Description ....................................................................................... 4

Operating Instructions............................................................................. 5-6

Battery Replacement.................................................................................. 6

Features

• Easy to use, pocket size and light weight

• 3 1/2 digital LCD display with LUX, Fc, LOBAT, MAX, HOLD indication

• Accurately displays 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

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Pantone 485 & 123

485 = (0/100/100/10)

123 = (0/18/100/0)

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°C to 60°C (14°F to 140°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 x

10, 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%/°C

Photo detector: One silicon photo diode with lter

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Pantone 485 & 123

485 = (0/100/100/10)

123 = (0/18/100/0)

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. Pressing the button once again, will release the hold and

allow a further measurement.

5- DATA HOLD: The reading will be held when the Data Hold button

Switch is pressed. If the button Switch is pressed once again,

it will release the hold and allow a further measurement.

6- Function button: Selects measurement functions of Lux or Fc

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Pantone 485 & 123

485 = (0/100/100/10)

123 = (0/18/100/0)

Operating Instructions

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 the light source in a horizontal position.

3. Read the illuminance nominal from the LCD display.

4. Over-range: If the instrument only displays 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  lters makes the spectral sensitivity characteristic almost

meet C.I.E. (International Commission on Illumination) photopia curve

) as the following chart described.

100% (Relative Sensitivity) Spectral Sensitivity

80% V(

)

60%

40%

20%

400 500 600 700

Wavelength (nm)

100% (Relative Sensitivity)

Spectral Sensitivity

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Pantone 485 & 123

485 = (0/100/100/10)

123 = (0/18/100/0)

7. Recommended Illumination:

Locations Lux

*Ofce

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

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 expired

battery with new battery. (1 x 12V battery, A23 or equivalent)

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Pantone 485 & 123

485 = (0/100/100/10)

123 = (0/18/100/0)

Notes _________________________________________

________________________________________________

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