Extech Instruments SDL700 Manual de usuario

User's Guide

Pressure Meter

SD Card real-time datalogger

Model SDL700

Extech SDL700 Pressure Meter Datalogger

Extech SDL700-NIST Pressure Meter Datalogger

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Introduction

Congratulations on your purchase of the Extech SDL700 Pressure Meter, an SD Logger Series

meter. This meter displays and stores pressure readings from optional pressure sensors in the

range of 30, 150, 300 psi. Supported measurement units are bar, psi, Kg/cm2, mm Hg, inch Hg,

meters of H2O, inches of H2O, atmosphere, hPA, and kPA. Logged data readings are stored on an

SD card for transfer to a PC. In addition, an RS232 port allows data streaming to a PC. This meter

is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.

Safety

International Safety Symbols

This symbol, adjacent to another symbol or terminal, indicates the user must refer to the

manual for further information.

Meter Description

1. Pressure Sensor input jack

2. Measurement reading on LCD Display

3. HOLD and Backlight key

4. MAX-MIN key

5. SET and Clock key

6. PC interface jack

7. Reset button

8. Power Adaptor jack

9. SD card slot

10. ENTER and LOG key

11. Down arrow ▼key

12. Up arrow ▲/ UNIT key

13. Power ON-OFF key

14. Unit of measure on the LCD Display

Notes: Items 6, 7, and 8 are located behind the snap-off compartment cover on meter’s right side.

Battery compartment, tilt stand, and tripod mount are located on the rear of the instrument

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Getting Started

Power ON-OFF

•Power the meter by pressing and holding the power button for at least 1.5 seconds.

•Press and hold the power button for at least 1.5 seconds to power OFF the meter.

•This meter is powered by six (6) 1.5VDC ‘AA’ batteries or by optional AC adaptor. If the meter

will not switch ON please check that fresh batteries are installed in the rear battery compartment

or, in the case of the AC adaptor, check that the adaptor is connected correctly to the meter and

to an AC source.

Display Backlight

To turn the display backlight ON or OFF, press and hold the backlight button for at least 1.5

seconds. The meter will beep when switching the backlight ON or OFF unless the beeper is

disabled.

Pressure Sensors

Pressure sensors are connected to the meter via the DIN jack at the top of the meter. Pressure

sensors of 2Bar (30psi), 10Bar (150psi) and 20Bar are available for use with the SDL700.

Note that re-calibration is not necessary when changing sensors; however the user must select the

appropriate sensor range in the Setup Mode. To view the currently selected sensor range from the

normal operation mode, press and hold the down arrow button ▼for at least 1.5 seconds.

Units of Measure

The currently selected unit of measure is shown below the measurement value on the meter’s LCD.

To change the unit of measure, press and hold the UNIT button until the desired unit of measure

appears and then release the UNIT button. The meter begins scrolling through the available units of

measure (see table below) after the UNIT button has been depressed for at least 1.5 seconds.

UNIT DISPLAY INDICATOR

psi PSI

Inch Hg In Hg

Inch H2O In H2O

hPA hPA

kPA _PA

Bar bAr

Kg/cm2_g C2

mm Hg --Hg

Meters H2O -t H2O

Atmospheres AtP

ZERO Adjustment

To null, or zero, the display for a connected sensor, press and hold the down arrow key▼for at

least 12 seconds.

Data Hold

To freeze a displayed reading on the LCD, momentarily press the HOLD button (the HOLD icon will

appear above the reading). To exit HOLD, press the HOLD button again.

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Setup Mode

Basic settings at a glance

To view the current configuration of the meter with regard to time, date, and datalogging sampling

rate press the SET button momentarily. 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 1.5 seconds to access the Setup menu.

2. Press the SET button momentarily 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 arrow keys to change the

setting. Press the ENTER button to confirm a change.

4. Press and hold the SET button for at least 1.5 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 (Hours/Minutes/Seconds)

PoFF

Automatic 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

tYPE

Select the pressure range type (

2, 5, 10, 20, 50, 100, 200, and 400 Bar

)

Setting the Clock Time

1. Access the dAtE parameter.

2. Use the arrow keys to change a value

3. Use the ENTER button to step through the selections

4. Press and hold the SET button for at least 1.5 seconds to exit to the normal operation mode (or

simply wait 7 seconds for the meter to automatically switch to the normal operating mode).

5. 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.

Setting the Datalogger Sampling Time (Rate)

1. Access the SP-t parameter.

2. The sampling rate can be set from ‘0’ seconds (manual log mode) up to 8 hours, 59 minutes,

and 59 seconds.

3. Use the ENTER button to move through the Hours, Minutes, and Seconds digit groups and use

the arrow keys to change the digit values.

Press the ENTER button to confirm the entry.

5. Press and hold the SET button for at least 1.5 seconds to exit to the normal operation mode (or

simply wait 7 seconds for the meter to automatically switch to the normal operating mode).

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Enabling/Disabling the Auto Power OFF Feature

1. Access the PoFF parameter.

2. Use the arrow buttons to select ON or OFF. With the Auto Power OFF feature enabled, the

meter will automatically switch OFF after 10 minutes of inactivity.

3. Press ENTER to confirm setting.

4. Press and hold the SET button for at least 1.5 seconds to exit to the normal operation mode (or

simply wait 7 seconds for the meter to automatically switch to the normal operating mode).

Set the Beeper Sound ON or OFF

1. Access the bEEP parameter.

2. Use the arrow buttons to select ON or OFF.

3. Press ENTER to confirm setting.

4. Press and hold the SET button for at least 1.5 seconds to exit to the normal operation mode (or

simply wait 7 seconds for the meter to automatically switch to the normal operating mode).

Numerical Format (comma or decimal)

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. Access the dEC parameter.

2. Use the arrow buttons to select USA or EUro.

3. Press ENTER to confirm setting.

4. Press and hold the SET button for at least 1.5 seconds to exit to the normal operation mode (or

simply wait 7 seconds for the meter to automatically switch to the normal operating mode).

SD Card FORMATTING

1. Access the Sd F parameter.

2. 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.

3. Press ENTER to confirm selection.

4. Press ENTER again to re-confirm.

5. The meter will automatically return to the normal operating mode when formatting is complete.

If not, press and hold the SET button for at least 1.5 seconds to exit to the normal operation

mode.

Set the Pressure Sensor Range Type (2, 5, 10, 20, 50, 100, 200, and 400 Bar)

Note: Currently available sensors are: 30psi (2 Bar), 150psi (10 Bar) and 300psi (20 Bar)

1. Access the tYPE parameter.

2. Use the arrow buttons to select the desired sensor type

3. Press ENTER to confirm setting.

4. Press and hold the SET button for at least 1.5 seconds to exit to the normal operation mode (or

simply wait 7 seconds for the meter to automatically switch to the normal operating mode).

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 momentarily 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 1.5 seconds. If using the power adaptor unplug the adaptor and then plug it back

in again to power the meter.

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Max-Min Reading Record

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

readings for later recall.

1. Press the MAX-MIN button momentarily to access this mode of operation (REC icon appears)

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

3. 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).

4. 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).

5. To exit the MAX-MIN mode, press and hold the MAX-MIN button for at least 1.5 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.

Datalogging

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) 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 presses the LOG button to manually log a reading onto the SD card.

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

2. Press and hold the LOG button for at least 1.5 seconds and the DATALOGGER icon will appear

on the LCD; the lower portion of the display will show p-n(n= memory position number 1-99).

Note that if PSI is set as the unit of measure it appears as P51 (where a ‘5’ is used as an ‘S’) in

the same area of the LCD where memory locations are shown. This can be disorienting at first.

3. Momentarily press the LOG button to store a reading. The DATALOGGER icon will flash each

time a data point is stored.

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

5. To exit the manual datalogging mode, press and hold the LOG button for at least 1.5 seconds.

The DATALOGGER icon will switch off.

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Automatic Datalogging

In automatic datalogging mode the meter takes and stores a reading at a user-specified sampling

rate onto an SD memory card. The meter defaults to a sampling rate of two seconds. 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 to a value other than zero.

2. Press and hold the LOG button for at least 1.5 seconds. The meter will flash the

DATALOGGER icon at the selected sampling rate indicating that readings are now being

automatically recorded to the SD card.

3. If a card is not inserted or if the card is defective, the meter will display EMPTY and exit the

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

4. Pause the datalogger by pressing the LOG button momentarily. The DATALOGGER icon will

stop flashing and the sample rate will display for a short time. To resume logging simply press

the LOG button again momentarily.

5. To terminate the datalogging session press and hold the LOG button for at least 1.5 seconds.

6. When an SD card is used for the first time a folder is created on the card and named PSA01.

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

7. When datalogging begins a new spreadsheet document named PSA01001.xls is created on

the SD card in the PSA01 folder. The data recorded will be placed in the PSA01001.xls

document until 30,000 readings are reached.

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

(PSA01002.xls) where another 30,000 readings can be stored. This method continues for up to

99 documents, after which another folder is created (PSA02) where another 99 spreadsheet

documents can be stored. This process continues in this same fashion with folders PSA03

through PSA10 (last allowable folder).

SD Data Card to PC Data Transfer

1. Complete a datalogging session as detailed in above in the previous sections. Hint: For the

first few tests, simply record a small amount of test data. This is to ensure that the datalogging

process is well understood before committing to critical, large scale datalogging.

2. With the meter switched OFF, remove the SD Card.

3. Plug the SD Card directly into a PC SD card reader. If the PC does not have an SD card slot,

use an SD card adaptor (available at most outlets where computer accessories are sold).

4. Power the PC and run a spreadsheet software program. Open the saved documents in the

spreadsheet software program (see example spreadsheet data screen below).

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Spreadsheet data example

RS-232/USB PC Interface

The optional 407001A software kit (software and cable) allows streaming of data to a PC via

the RS232 Output jack.

AC Power Adaptor

This meter is normally powered by six (6) 1.5V ‘AA’ batteries. An optional 9V power adaptor is

available. When the adaptor is used, the meter is permanently powered and the power button will

be disabled.

Battery Replacement and Disposal

When the low battery icon appears on the LCD, the batteries must be replaced. Several hours

of accurate readings are still possible in this condition; however batteries should be replaced as

soon as possible:

•Remove the two (2) Phillips screws from the rear of the meter (directly above the top of the tilt

stand).

•Remove and safely place the battery compartment and screws where they will not be damaged

or lost.

•Replace the six (6) 1.5V ‘AA’ batteries observing polarity.

•Replace the battery compartment cover with the two (2) Phillips screws.

All EU users are legally bound by the battery ordinance to return all used batteries to

collection points in your community or wherever batteries / accumulators are sold!

Disposal in the household garbage is prohibited!

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Specifications

General Specifications

Display Backlit LCD; LCD size: 52 x 38mm (2 x 1.5”)

Status indicators Over-range audible beep and low battery display icon

Sensor types Accepts pressure sensors with 100mV full scale

Available sensors: 30, 150 and 300psi

Measurement Units

Bar, psi, Kg/cm2, hPA, mm Hg, inch Hg, meters H2O, kPA, inches

H2O, ATP

Accuracy (Meter) ± (0.5% reading + 1d) at ambient temperature 23°C (±

5°C)

Datalogger Sampling Rate AUTO LOGGING: From 1 second up to 9 hours.

MANUAL LOGGING: Set the sampling rate to ‘0’ seconds

Memory Card SD memory card; 1G to 16GB size

Data Hold Freeze the displayed reading

Memory Recall Record and Recall the Maximum and Minimum readings

Display update rate Approx. 1 second

Data Output RS-232 / USB PC computer interface

Operating Temperature 0 to 50

C (32 to 122

Operating Humidity 85% R.H. max.

Auto Power OFF After 10 minutes of inactivity (can be disabled)

Power Supply Six (6) 1.5 VDC batteries (optional 9V AC adaptor)

Power Consumption Normal operation (backlight and datalogger OFF): approx. 5mAdc

With backlight OFF and datalogging ON: approx. 25mAdc

With backlight ON add approx. 12mAdc

Weight 343g (0.75 lbs.) w/ batteries; 241g (0.53 lbs.) w/o batteries

Dimensions 182 x 73 x 47.5mm (7.1 x 2.9 x 1.9”)

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Transducer Range and Resolution Table

PT30 PT150 PT300

Max. Max. Max.

Sensor type

Range Resolution Range Resolution Range Resolution

bar 2 0.002 10 0.01 20 0.02

Psi 29 0.02 145 0.2 290 0.2

Kg/cm

2.040 0.002 10.19 0.01 20.40 0.02

mm Hg 1500 2 7500 10 15000 20

inch Hg 59.05 0.05 295.2 0.2 590.5 0.5

meter H

0 20.40 0.02 101.9 0.1 204.0 0.2

inch H

0 802 1 4010 5 8020 10

Atmosphere 1.974 0.002 9.87 0.01 19.74 0.02

hPA 2000 2 10000 10 20000 20

kPA 200.0 0.2 1000 1 2000 2

Transducer Accuracy PT30: ± (2%FS + 0.02 Bar)

PT150: ± (2%FS + 0.1 Bar)

PT300: ± (2%FS + 0.2 Bar)

Overload protection 150% of max capacity

Diaphragm Ceramic

Supply voltage 5V

Thread ¼” PS, 19 teeth per inch

Span (full scale) ± 1% (10 to 40ºC) includes linearity, hysteresis & repeatability

Zero ± 2% Full Scale (10ºC to 40ºC)

Operating Temperature 32ºF to 140ºF (0ºC to 40ºC)

Operating Humidity Max 80% RH

Output Full capacity output = 100 mV DC

Size 30 mm diameter x 85mm

Weight 5.65oz. (160g)

Cable length 39” (1m)

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