Sper scientific 840020 Bedienungsanleitung

Light Meter (Lux/FC)

840020

2 3

Light Meter (Lux/FC) - 840020

Printed in the USA

The contents of this manual may not be reproduced or transmitted

in any form or by any means electronic, mechanical, or other

means that do not yet exist or may be developed, including

photocopying, recording, or any information storage and retrieval

system without the express permission from Sper Scientic.

INTRODUCTION .....................................3

PANEL DESCRIPTION ................................3

OPERATING INSTRUCTIONS...........................4

GENERAL MEASUREMENT..........................4

HOLD & PEAK HOLD ...............................4

RECORD MAX/MIN.................................5

NOTES & PRECAUTIONS............................5

ZERO ADJUSTMENT & CALIBRATION ...................5

BATTERY REPLACEMENT .............................6

RS232 SERIAL INTERFACE ............................6

SPECIFICATIONS ....................................7

WARRANTY.........................................8

TABLE OF CONTENTS

INTRODUCTION

Monitor light levels anywhere with fast, stable and accurate

response. Results are easily read on the extra large LCD with

bar graph, low battery and over range indications. The color and

cosine corrected sensor meets C.I.E. photopic spectrum. Also

features RS232 computer output, max-min, auto power o󰀨, zero

adjustment, hold function and a tripod back.

Comes ready to use with a 9V battery, instructions, soft padded

case, and a detachable sensor with cover for easier replacement

or repair.

PANEL DESCRIPTION

1. Sensor Input & Sensor Plug

2. Display

3. Power Button

4. Hold Button

5. Rec. Min/Max Button

6. Lux/FC Button

7. Range Button

8. Zero Button

9. Tripod Screw (on back)

10. Stand (on back)

11. Battery Cover (on back)

12. Photo Sensor

13. RS232 Cover (on side)

14. RS232 Output (on side)

4 5

OPERATING INSTRUCTIONS

Measurement Procedures

1. Insert the SENSOR plug into the SENSOR INPUT

and turn the meter on by pressing the POWER button.

2. Remove the lens cap from the PHOTO SENSOR.

3. Select the desired unit of measure by pressing the

LUX/FC button.

4. Select the maximum range by pressing the RANGE button.

If the out of range indicator “- - - -” appears, select another

range or discontinue use. For the highest accuracy, select the

range that o󰀨ers the highest resolution (most number of digits

after the decimal point).

5. Point the PHOTO SENSOR toward the source and read

the results on the display.

6. The instrument has an automatic shut o󰀨 function in order to

prolong battery life. After approximately 10 minutes without

activity (no buttons pushed), the meter will automatically shut

o󰀨. To disable this feature, press the REC MAX/MIN button.

7. Press the POWER button to manually turn the meter o󰀨.

Hold

1. During measurement, press HOLD to freeze the measured value.

2. “HOLD” and the value are displayed.

Peak Hold

1. During measurement, press the HOLD button for 2 to 3 seconds.

2. “Peak HOLD” and the peak value are displayed and updated

if exceeded.

3. To erase the peak value, press the HOLD button once

(the display will ash).

4. To exit this function, press the HOLD button for at least 2 seconds.

Record Maximum / Minimum

1. Press the REC MAX/MIN button once to enter the recording

mode. “REC” and the recorded values are displayed and

continuously updated.

2. Press the REC MAX/MIN button as needed to view the

recorded Max and Min values. “REC Max” and the maximum

recorded value or “REC Min” and the minimum recorded value

are displayed.

Note...

The Max/Min values are frozen and not updated until the meter

returns to recording mode.

3. To return to recording mode, press the HOLD button.

“REC” is displayed without “Max” or “Min”.

4. To erase the recorded Max/Min values and exit the recording

mode, press the REC MAX/MIN button for at least 2 seconds.

Notes and Precautions

• Avoid range overload.

• When using PEAK HOLD or REC MAX/MIN your measurements

must be within the selected range, if not, the out of range

indicator “- - - -” will be displayed.

• Cover the PHOTO SENSOR with the sensor cap when the

meter is not in use.

• Fluctuations in the reading are often due to shadows or a

weak battery. Also, ambient temperatures and drafts may

a󰀨ect the reading.

• Do not store in areas of high temperature and/or humidity.

• Remove the battery for long-term storage.

ZERO ADJUSTMENT AND CALIBRATION

1. With the sensor cover securely in place and the meter

turned on, use the RANGE button to select the 40.00 Lux

range (digits appear on the LCD).

2. Press the ZERO button and the “0.00 LUX” should be displayed.

3. To maintain accuracy, annual laboratory calibration is

recommended and available from Sper Scientic.

6 7

BATTERY REPLACEMENT

1. Replace the battery when the low battery icon is displayed.

2. In-spec measurements may be made for several hours after the

low battery indicator appears.

3. Remove the BATTERY COVER screw and slide the cover o󰀨.

4. Replace the battery with a fresh 9V battery (alkaline or heavy duty).

RS232 PC SERIAL INTERFACE

Use a small screwdriver to gently lift the RS232 COVER up to

expose the RS232 OUTPUT 3.5 mm terminal. The signal output

is a 16-digit data stream that can be adapted to user-dened

applications. A RS232 lead with the following connection is

required to link the instrument with the PC serial interface.

Meter (3.5 mm jack plug) PC (9W “D” Connector)

Center Pin . . . . . . . . . . . . .Pin 4 Pin 2 2.2K

Ground Shield . . . . . . . . . . .Pin 2 Pin 5 resistor

The 16 digits data stream will be displayed in the following format:

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Each digit indicates the following status:

D0 End Word

D1 & D8 Display reading, D1 = LSD, D8 = MSD

E.g: If the display reading is 1234, then D8 to D1 is: 00001234

D9 Decimal Point (DP), position from right to the left

0 = No DP, 1= 1 DP, 2 = 2 DP, 3 = 3 DP

D10 0 = Positive 1 = Negative

D11 & D12 Annunciator for Display Lux = 15, Ft-cd = 16

D13 The upper display data = 1, The lower display data = 2

D14 4

D15 Start Word

RS232: 9600, N, 8, 1

SPECIFICATIONS

Unit of

Measure Range In-Range Display Resolution Accuracy

Lux

40.00 0 to 40,000 0.01 ±(3% rdg + 0.5%

F.S.)

400.0 36.6 to 400.0 0.1

4,000 360 to 4,000 1

40,000 3,600 to 40,000 10

400,000 10,000 to 400,000 100

<100,000 ± (3%

rdg + 0.5% F.S.).

>100,000 for

reference only

Foot

Candle

4.000 0 to 3.720 0.001

±(3% rdg +

0.5% F.S.)

40.00 3.35 to 37.20 0.01

400.0 33.5 to 372.0 0.1

4,000 335 to 3,720 1

40,000 930 to 37,200 10

< 9,300 ± (3%

rdg + 0.5% F.S.).

>9,3000 for

reference only

Accuracy tested by a standard parallel light, tungsten lamp of 2856°K.

Out of Range

Indicator

“- - - -” appears at the top of the display for over-range,

or at the bottom of the display for under-range.

Power Supply One 9V battery, current approx. DC 8mA

Operating Environment 32 to 122°F (0 to 50°C), Less than 80% RH

Dimensions 7¾" × 2¾" × 1¼" (197 × 70 × 32 mm)

Weight 10 oz (283 g)

PB8

WARRANTY

Sper Scientic warrants this product against defects in materials and

workmanship for a period of ve (5) years from the date of purchase, and

agrees to repair or replace any defective unit without charge. If your model

has since been discontinued, an equivalent Sper Scientic product will be

substituted if available. This warranty does not cover probes, batteries,

battery leakage, or damage resulting from accident, tampering, misuse,

or abuse of the product. Opening the meter to expose its electronics will

break the waterproof seal and void the warranty.

To obtain warranty service, ship the unit postage prepaid to:

SPER SCIENTIFIC LTD.

8281 East Evans Road, Suite #103

Scottsdale, AZ 85260

The defective unit must be accompanied by a description of the

problem and your return address. Register your product online at

www.sperwarranty.com within 10 days of purchase.

rev 7/6/2017

LIGHT SPECT RUM CHART

100

120

SPER CEI

LIGHT SPECTRUM CHART

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