Extech Instruments SDL470 User manual

USER MANUAL

UVA, UVC Light Meter with Temperature

Model SDL470

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Introduction

Thank you for selecting the Extech Instruments Model SDL470 Ultraviolet Light Meter. The

SDL470 measures UVA and UVC light plus temperature. This device is shipped fully tested and

calibrated and, with proper use, will provide years of reliable service. Please visit our website

(www.extech.com) to check for the latest version of this User Guide, Product Updates, and

Customer Support.

Features

•

UVA and UVC light measurement in one meter

•Long wave 365 nm ultra-violet irradiance measurements (UVA)

•Professional UVA meter, used to measure the UVA Radiation from UVA light (black light)

•

Short wave 254 nm ultra-violet irradiance measurements (UVC)

•Professional UVC light meter, measures UVC irradiation from UVC light source

•

Two ranges: 2000 µW/cm² and 20 mW/cm²

•Meter includes two probes: UVA probe and UVC probe

•UV Sensor with cosine correction filter

•

UV Zero feature

•Applications include: Monitoring blue light radiation from welding equipment, UV

sterilization, graphic arts, photochemical matching, UV EPROM erasure, Photo-resist

exposure, ink curing, adhesives and coatings

•

Microprocessor circuit provides high reliability and durability

•Separate UV light probe allows the user to measure UV light with optimum positioning

•Type K and Type J thermocouple thermometer (probe not included)

•

Real time SD memory card Datalogger, built-in calendar clock, real-time data recording,

with selectable sampling time (rate) from 1 second to 3600 seconds

•

Manual Datalogging (set the sampling rate to 0)

•Simple, innovative operation, PC not required to setup. Simply use the SD card to

transfer data from meter to PC

•SD card capacity: 1 GB to 16 GB.

•

LCD with green backlight is easy to read

•Meter can be set to default on auto power off or manual power off

•

Includes Data hold, Record MA and MIN readings

•Powered by Alkaline 1.5V AA x 6 batteries or 9V AC adaptor

•RS232/USB PC computer interface

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Meter Description

1. LCD display

2. HOLD and LCD Backlight button

3. Power button

4. Up arrow ▲and UNITS button

5. Down arrow ▼and FUNCTION button

6. MAX-MIN button

7. Time/Date Check and SET button

8. ENTER and LOG button

9. Side compartment (detailed below)

10. UVA Probe and UVC Probe input plug

11. Type K/J thermocouple socket

12. SD Card Slot

13. UVC sensor

14. UVA probe handle

15. UVA sensor (protective cover not shown)

Note: Battery compartment, tilt stand, and tripod mount are located on rear of meter

1. DC 9V power adaptor jack

2. Reset button

3. RS-232 output port

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Operation

Function/Measurement Selection

•Power the meter ON or OFF by pressing and holding the Power button for at least 2 seconds.

•If this is the first time the meter is powered ON or if the batteries have been replaced, the

meter may display the SET DATE message to remind user to set the date and time (see the

SETUP MODE section for setting the time and date).

•Scroll through the three measurement options (UVA LIGHT, UVC LIGHT, or TYPE K/J

THERMOMETER) by pressing and holding the Function button. The display icons are ‘A’ for

UVA Light, ‘C’ for UVC Light, and ‘tP’ for Type K/J thermometer.

UVA Light Meter

•Insert the UVA Probe Plug into the Probe Input Socket.

•Switch the meter ON by pressing and holding the Power button for at least 2 seconds.

•Select the UVA Light Meter option as described above in the Function/Measurement

Selection section.

•The display will show the µW/cm^2 unit of measure.

•The meter is now ready to make UVA light measurements.

•Holding the Sensor Handle, face the UVA Sensor toward the source of UVA light.

•The display will show the measurement reading.

UVC Light Meter

•Insert the UVC Probe Plug into the Probe Input Socket.

•Switch the meter ON by pressing and holding the Power button for at least 2 seconds.

•Select the UVC Light Meter option as described above in the Function/Measurement

Selection section.

•The display will show the µW/cm^2 unit of measure.

•The meter is now ready to make UVC light measurements.

•Holding the Sensor Body, face the UVC Sensor toward the source of UVC light.

•The display will show the measurement reading.

LCD Backlight

•Press and hold the HOLD/Backlight button for 2 seconds to switch the LCD backlight ON/OFF.

ZERO Adjustment

•Cover the light sensor with the protective cover.

•If the meter display does not read zero, press and hold both the up and down arrow buttons

simultaneously for at least 3 seconds.

•The display will automatically zero.

•Remove the sensor cover to begin taking measurements.

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Type K/J Thermometer Measurements (Probe is optional)

•Plug a thermocouple (not supplied) into the temperature probe jack at the top of the meter.

•Switch the meter ON by pressing and holding the Power button for at least 2 seconds.

•Select the Thermocouple function as described in the Function/Measurement Selection

section.

•The meter display will show the temperature measurement along with the ‘K’ or ‘J’

thermocouple indicator. The meter defaults to Type K thermocouple; refer to the Setup

Mode section for instructions on how to change the thermocouple type.

Data Hold

•Press the HOLD button momentarily to freeze the displayed reading.

•The HOLD display icon will appear.

•Press the HOLD button again to release the display

•The HOLD display icon will switch OFF.

MAX-MIN Reading Store/Recall

For a given measurement session, this meter can record the highest (MAX) and the lowest (MIN)

readings.

•Press the MAX-MIN button momentarily (REC icon appears)

•The meter is now recording the MAX and MIN readings.

•Press the MAX-MIN button again to view the current MAX readings (MAX icon appears).

The readings on the display are now the highest readings encountered since the REC icon

was switched on (when the MAX-MIN button was first pressed).

•Press the MAX-MIN button again to view the current MIN readings (MIN icon appears).

The readings on the display are now the lowest readings encountered since the REC icon

was switched on (when the MAX-MIN button was first pressed).

•To exit the MAX-MIN mode, press and hold the MAX-MIN button for at least 2 seconds.

The meter will beep, the REC-MAX-MIN icons will switch off, the MAX-MIN memory will

clear, and the meter will return to the normal operating mode.

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Setup Mode

Time/Date and Datalogger Sample Rate settings at a glance

To view the current configuration of the meter with regard to time/date and sample rate short

press the SET button. The meter will now display the configuration in quick succession. If the

information is missed on the first try, simply press the SET button again until all of the

information is noted.

Accessing the Setup mode

1. Press and hold the SET button for at least 2 seconds to access the Setup menu.

2. In the Setup Mode, short press the SET button to step through the available parameters.

The parameter type is shown on the bottom of the LCD and the current selection for that

type is shown above it.

3. When a parameter is displayed that is to be changed, use the up/down arrow buttons to

change the setting. Press the ENTER button to confirm a change.

4. Press and hold the SET button for at least 2 seconds to exit the Setup mode. Note that the

meter automatically switches out of the Setup mode if no key is pressed within 7 seconds.

The available Setup parameters are listed below. Additional detailed information is

provided below this list:

dAtE

Set the clock (Year/Month/Date; Hours/Minutes/Seconds)

SP-t

Set the datalogger sampling rate

(

1, 2, 5, 10, 30, 60, 120, 300, 600, 1800, 3600 seconds)

PoFF

Auto power-off management (Enable or disable the auto-power off function)

bEEP

Set the beeper sound ON/OFF

dEC

Set the numerical format; USA (decimal: 20.00) or European (comma: 20,00)

Sd-F

Format the SD memory card

t-CF

Units of measure selection for temperature readings (C or F)

tYPE

Select the Thermocouple type (K or J)

Setting the Date and Clock (dAtE)

1. Access the dAtE parameter as described in the Accessing Setup Mode section above.

2. Use the ENTER button to step through the YY/MM/DD/HH/MM/SS selections.

3. Use the up/down arrow keys to change a value (press and hold to scroll quickly).

4. Continue through all of the date and time settings in this manner. After the last ENTER

press the meter will automatically advance to the next setup parameter.

5. If desired, press and hold the SET button for 2 seconds to exit to the normal operation

mode (or wait 7 seconds for the meter to automatically exit).

6. The clock will keep accurate time even when the meter is switched off. However, if the

battery expires the clock will have to be reset after fresh batteries are installed.

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Setting the Datalogger Sampling Time (Rate) ‘SP-t’

1. From the SP-t parameter the sampling rate can be set to ‘0’ seconds (for manual logging) or

1, 2, 5, 10, 30, 60, 120, 300, 600, 1800, 3600 seconds for auto logging.

2. Use the up/down arrow buttons to select the sampling rate (press and hold for quick scroll).

Press the ENTER button to confirm the entry and automatically step to the next parameter.

4. Press and hold the SET button for 2 seconds to exit to the normal operation mode (or wait 7

seconds for the meter to automatically exit).

Enabling/Disabling the Auto Power OFF Feature (PoFF)

1. From the PoFF parameter screen use the arrow buttons to select ON (enable) or OFF

(disable). With the Auto Power OFF feature enabled, the meter will automatically switch

OFF after 5 minutes of inactivity.

2. Press ENTER to confirm setting and to step to the next parameter.

3. If desired, press and hold the SET button for 2 seconds to exit to the normal operation

mode (or wait 7 seconds for the meter to automatically exit).

Set the Beeper Sound ON or OFF (bEEP)

1. From the bEEP parameter window use the arrow buttons to select ON (enable) or OFF

(disable).

2. Press ENTER to confirm setting and to move to the next parameter.

3. If desired, press and hold the SET button for 2 seconds to exit to the normal operation

mode (or wait 7 seconds for the meter to automatically exit).

Numerical Format (comma or decimal) ‘dEC’

European and USA numerical formats differ. The meter defaults to USA mode where a decimal

point is used to separate units from tenths, i.e. 20.00; The European format uses a comma, i.e.

20,00 to separate units from tenths. To change this setting:

1. From the dEC parameter screen use the arrow buttons to select USA or Euro (European).

2. Press ENTER to confirm setting and to move to the next parameter.

3. If desired, press and hold the SET button for 2 seconds to exit to the normal operation

mode (or wait 7 seconds for the meter to automatically exit).

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SD Card FORMATTING (Sd-F)

1. From the Sd-F parameter screen use the arrow buttons to select YES to format the card

(select NO to abort). Note that all data on the card will be lost if formatting is attempted.

2. If NO was selected, press ENTER to confirm and to move to the next parameter.

3. If YES was selected, press ENTER and then press ENTER again when ‘ent’ is shown. The

meter steps to the next parameter automatically after the SD card is formatted.

4. If desired, press and hold the SET button for 2 seconds to exit to the normal operation

mode (or wait 7 seconds for the meter to automatically exit).

Set the Temperature Units of Measure (C or F) ‘t-CF’

1. From the t-CF parameter screen use the arrow buttons to select the desired unit of

measure.

2. Press ENTER to confirm setting and to move to the next parameter.

3. If desired, press and hold the SET button for 2 seconds to exit to the normal operation

mode (or wait 7 seconds for the meter to automatically exit).

Set the Thermocouple Type (K or J) ‘tYPE’

1. From the tYPE parameter screen use the arrow buttons to select the desired sensor type.

2. Press ENTER to confirm setting and to move to the next parameter.

3. If desired, press and hold the SET button for 2 seconds to exit to the normal operation

mode (or wait 7 seconds for the meter to automatically exit).

System Reset

If the meter’s keys become inoperable or if the display freezes the Reset button can be used to

reset the instrument.

•Use a paper clip or similar item to short press the reset button located on the lower right

side of the instrument under the snap-off compartment cover.

•After pressing the Reset button, switch the instrument ON by pressing and holding the

POWER key for at least 2 seconds. If using the power adaptor unplug the adaptor and then

plug it back in again to power the meter.

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Datalogging and PC Interface

Types of Data Recording

•Manual Datalogging: Manually log up to 99 readings onto an SD card via push-button press.

•Automatic Datalogging: Automatically log data onto an SD memory card where the number

of data points is virtually limited only by the card size. Readings are logged at a rate specified

by the user.

SD Card Information

•Insert an SD card (from 1G size up to 16G; however 4GB sized cards or smaller are

recommended) into the SD card slot at the bottom of the meter. The card must be inserted

with the front of the card (label side) facing toward the rear of the meter.

•If the SD card is being used for the first time it is recommended that the card be formatted

and the logger’s clock set to allow for accurate date/time stamping during Datalogging

sessions. Refer to the Setup Mode section for SD card formatting and time/date setting

instructions.

•European and USA numerical formats differ. The data on the SD card can be formatted for

either format. The meter defaults to USA mode where a decimal point is used to separate

units from tenths, i.e. 20.00. The European format uses a comma, i.e. 20,00. To change this

setting, refer to the Setup Mode section.

Manual Datalogging

In the manual mode the user can manually log one reading at a time onto the SD card (up to 99

readings).

1. Set the sampling rate to ‘0’ seconds as described in the Setup Mode section.

2. Press and hold the LOGGER button for at least 2 seconds (the LOGGER icon will appear).

3. If an SD card is not installed in the meter, the display will show an error message (CARD).

4. In an SD card is installed, the lower portion of the display will show P-n(n= memory

position number 1-99).

5. Use the ▲and ▼buttons to select one of the 99 data memory positions in which to

record.

6. Short press the LOG button to store the reading (the SCAN CARD display icon will show

briefly as the reading is stored in the selected location). Repeat steps 5 and 6 for up to 99

readings.

7. To exit the manual Datalogging mode, press and hold the LOG button for at least 2 seconds.

The Pnand LOGGER icons will switch off.

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Automatic Datalogging

In automatic Datalogging mode the meter stores a reading at a user-specified sampling rate onto

an SD memory card. The meter defaults to a sampling rate of one second. To change the

sampling rate, refer to the Setup Mode section (the sampling rate cannot be ‘0’ for automatic

Datalogging):

1. Select the sampling rate in the Setup Mode (refer to Setup Mode section) to a value other

than zero.

2. Ensure that a formatted SD card is properly inserted in the meter’s SD card slot. When

inserted, the SD card label should be facing the rear of the meter for proper orientation.

3. Press and hold the LOG button for two seconds. The REC display icon will flash once per

second and the LOGGER display icon will flash at the selected sampling rate.

4. Note that if the battery is low, the BAT icon will flash and Datalogging will not start. Replace

the batteries at this point (refer to the Battery Replacement section).

5. If an SD card is not inserted or if the card is defective, the meter will display a CARD error. In

this case, switch the meter OFF and try again with a valid SD card.

6. Pause the datalogger by short pressing the LOG button. The REC icon will switch OFF. To

resume logging short press the LOG button again.

7. To terminate the Datalogging session, press and hold the LOG button for at least 2 seconds.

8. When an SD card is used for the first time a folder is created on the card and named

UVA01. Up to 99 spreadsheet documents (each with 30,000 readings) can be stored in this

folder.

9. When Datalogging begins a new spreadsheet document named UVA01001.xls is created on

the SD card in the UVA01 folder. The data recorded will be placed in the UVA01001.xls

document until 30,000 readings are reached.

10. If the measurement session exceeds 30,000 readings, a new document will be created

(UVA01002.xls) where another 30,000 readings can be stored. This method continues for

up to 99 documents, after which another folder is created (UVA02) where another 99

spreadsheet documents can be stored. This process continues in this same fashion with

folders UVA03 through UVA10 (last allowable folder).

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