Sper scientific 840021 User manual

Light Meter (Foot Candles)

840021

Instruction Manual

SPER

SCIENTIFIC LTD.

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TABLE OF CONTENTS

1. INTRODUCTION..................................................................................... 2

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

3. MEASUREMENT PROCEDURES.......................................................... 4

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

5. BATTERY REPLACEMENT ................................................................. 5

6. OPTIONAL ACCESSORIES................................................................. 5

7. SPECIFICATIONS .................................................................................. 6

8. LIGHT SENSOR SPECTRUM ................................................................ 7

9. WARRANTY ........................................................................................... 8

1. INTRODUCTION

Compact and portable, your new meter can be used to monitor light levels or

check the FC level of a particular light source. The sensor's exclusive photo

diode and color correction filter meets the C.I.E. photopic spectrum.

Sper Scientific light meters are cosine corrected for a quick and accurate

response. Large easily legible 4 digit LCD. The meter has an external zero

adjustment, data hold, low-battery indicator, and a moisture resistant front

panel.

Comes with soft carrying case, detachable light sensor, photo-sensor cover,

instructions and a 9-Volt battery.

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2. PANEL DESCRIPTION

laboratory calibration only

10 12

1. DISPLAY

2. ON BUTTON

3. OFF BUTTON

4. HOLD BUTTON

5. 200 RANGE BUTTON

6. 2000 RANGE BUTTON

7. ZERO SETTING TERMINAL

8. SENSOR INPUT SOCKET

9. STAND

10. BATTERY COMPARTMENT

11. PHOTO SENSOR

12. SENSOR PLUG

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3. MEASUREMENT PROCEDURES

•Insert the SENSOR (12) plug into the SENSOR INPUT (8) socket.

•Turn the meter on using the ON (2) button.

•Remove the lens cap from the PHOTO SENSOR (11).

•Press the 200 RANGE (5) button for measurements of 0 ~ 199.9 FC, or

select the 2000 RANGE (6) button for measurements of 200 ~ 1999.9 FC.

If you are uncertain about which range to use, select the highest range.

•Range Overload is indicated when "1" appears on the left side of the

display. If this occurs, switch to the highest range or discontinue use.

•Point the PHOTO SENSOR (11) toward the source and read the results

on the display. Divide the meter reading by the factor of .0929 to convert

FC results to LUX.

•Push the HOLD (4) button to freeze the reading in the display. The word

"HOLD" appears on the LCD. Press the HOLD (4) button again to exit

this function.

•Press the OFF (3) button to turn the unit off.

Notes:

•Keep the lens cap on the PHOTO SENSOR (11) at all times except when

actually taking a reading.

•Fluctuations in the reading are generally due to shadows or fluctuations in

the line voltage. Ambient temperature, drafts and ventilation also affect

the luminous flux output.

•Avoid range overload and do not store in areas of high temperature

and / or humidity. Remove the battery for long-term storage.

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- 5 -

4. ZERO ADJUSTMENT & CALIBRATION

•With the sensor cover securely in place and the meter turned on, the

LCD display should indicate "000" or "00.0" depending on the selected

range.

•A slight variation will not affect readings; however, if a precise reading

is required you may use the ZERO SETTING (7) terminal to reset the

unit.

•To make an adjustment, press the 200 RANGE (5) button and cover

the PHOTO SENSOR (11).

•Using a small screwdriver, turn the ZERO SETTING (7) terminal until

"00.0" appears on the LCD.

•To maintain accuracy, annual laboratory calibration is recommended.

For calibration service, contact SPER SCIENTIFIC, 7720 E Redfield

Rd, Suite 7, Scottsdale, AZ 85260, USA. Ph 480-948-4448,

[email protected].

5. BATTERY REPLACEMENT

•Replace the battery when the low battery icon is displayed in

the left corner of LCD.

•In-spec measurements may be made for several hours after the low

battery indicator appears.

•Remove the BATTERY COMPARTMENT (10) screw and slide the

cover away from the meter, remove the battery and replace with a 9V

battery (alkaline or heavy duty type).

•Replace the cover.

6. OPTIONAL ACCESSORIES

•840090 Water Resistant Instrument Pouch

•840092 Bench-Top Tripod

•840093 Field Tripod

IMPORTANT: During adjustment, be sure to use only the terminal marked

"ZERO." The unmarked terminals are for professional laboratory calibra-

tion only. Tampering with the unmarked terminals will result in inaccurate

readings and require professional calibration of the meter.

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- 6 -

7. SPECIFICATIONS

Display Maximum reading 1999

Overload Indicator "1" is displayed on the left of the LCD

Power Supply One 9V battery, current approx. DC 3mA

Range* 200 Range = 0 ~ 199.9 Foot Candle

2000 Range = 200 ~ 1999 Foot Candle

Resolution* 200 Range = 0.1 Foot Candle

2000 Range = 1 Foot Candle

Accuracy* ±5% + 4 digits

Operating Temperature 32 ~ 122°F (0 ~ 50°C)

Operating Humidity Less than 80% RH

Weight 9.9 oz (280g)

Dimensions

Main Unit: 7.9 x 2.7 x 1.2" (200 x 68 x 30mm)

Photo Sensor: 3.2 x 2.2 x 0.3" (82 x 55 x 7mm)

Photo Sensor Lead: Extends to appx. 3½ft

*Electronic Specifications (23 ± 5°C): Tested under the environment RF

Field Strength less than 3 V/M, and frequency less than the 30 MHz only.

Sensor

The exclusive photo diode and color correction

filter, spectrum meets C.I.E.

Cosine correction factor meets the standard.

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- 7 -

8. LIGHT SPECTRUM SENSOR

100

120

410

430

450

470

490

510

530

550

570

590

610

630

650

670

690

710

730

750

SPER CEI

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- 8 -

Rev. 05/11/06

WARRANTY

Sper Scientific warrants this product against defects in materials and

workmanship for a period of FIVE (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 Scientific product

will be substituted if available. This warranty does not cover damage

resulting from accident, misuse, or abuse of the product. In order to obtain

warranty service, ship the unit postage prepaid to:

SPER SCIENTIFIC LTD.

7720 E Redfield Rd, Suite 7, Scottsdale, Arizona 85260, USA

ph. 480-948-4448, info@sperscientific.com, www.sperscientific.com

The defective unit must be accompanied by a description of the problem

and your return address. Please be sure to register online or return your

warranty card within ten (10) days of purchase.

[email protected]

www.ponpe.com

Table of contents

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