EUTECH INSTRUMENTS 2700 Manual de usuario

Technolo

ade

Instruction Manual

2700 Series Benchtop

Meters

pH 2700 ●ION 2700 ●CON 2700 ●DO 2700 ●PC 2700

Part of Thermo Fisher Scientific 68X544001 Rev 0 Ma

2010

TABLE OF CONTENTS

1. Introduction......................................................................................1

2. Getting Started.................................................................................2

Keypad and Display ...................................................................................................2

Navigation of Tabs .....................................................................................................3

Meter Connections .....................................................................................................4

3. System Setup & Configuration.......................................................5

Stability .......................................................................................................................5

Stability Criteria..........................................................................................................6

Auto Read ...................................................................................................................6

Print Set.......................................................................................................................7

Date & Time.................................................................................................................8

Password ....................................................................................................................8

Clear Datalog ..............................................................................................................8

Factory Reset..............................................................................................................9

Contrast Adjustment..................................................................................................9

4. Setup pH & mV.................................................................................10

Sample ID ....................................................................................................................10

Buffer (Group Selection)............................................................................................10

Cal Points....................................................................................................................11

Resolution...................................................................................................................11

Alarm ...........................................................................................................................11

Cal Due ........................................................................................................................11

5. pH Calibration (with preset buffer group) .....................................12

6. pH Calibration (with custom buffers) ............................................14

7. Millivolt (mV) Calibration (Offset Adjustment)..............................16

8. Temperature Setup..........................................................................17

9. Temperature Calibration .................................................................18

10. Conductivity, TDS, Salinity, & Resistivity Setup ..........................19

Sample ID ....................................................................................................................19

Cal Points....................................................................................................................20

Pure Water Coefficient...............................................................................................20

Temperature Coefficient (linear)...............................................................................20

Normalization Temperature (°C) ...............................................................................21

Cell Constant ..............................................................................................................21

Alarm ...........................................................................................................................22

Cal Due ........................................................................................................................22

11. Conductivity Calibration (automatic).............................................23

12. Conductivity, TDS, Salinity, & Resistivity Calibration (manual

adjustment) .............................................................................................25

13. Ion Setup ..........................................................................................27

Sample ID ....................................................................................................................27

Measure Unit...............................................................................................................27

Alarm ...........................................................................................................................27

Cal Due ........................................................................................................................28

14. Ion Calibration..................................................................................29

15. Dissolved Oxygen Setup ................................................................31

Sample ID ....................................................................................................................31

Offset Cal (% saturation only) ...................................................................................31

Pressure Unit (% saturation mode only)..................................................................31

Pressure Cal (% saturation mode only) ...................................................................32

Pressure Compensation (% saturation mode only)................................................32

Measure Unit (concentration mode only) ................................................................32

Salinity Value (concentration mode only)................................................................33

Alarm ...........................................................................................................................33

Cal Due ........................................................................................................................33

16. Dissolved Oxygen Calibration........................................................34

100 % Calibration .......................................................................................................34

0% Calibration ............................................................................................................35

mg/L or ppm (Concentration) Calibration................................................................35

17. Transferring and Printing Data.......................................................37

18. Calibration Report ...........................................................................38

19. Dissolved Oxygen Theory ..............................................................39

20. Calculating Temperature Coefficients...........................................42

21. Calculating TDS Conversion Factor ..............................................43

22. DO Electrode Maintenance .............................................................44

23. Troubleshooting ..............................................................................45

24. Specifications ..................................................................................47

25. Replacements and Accessories.....................................................50

26. Warranty ...........................................................................................52

27. Return of Items ................................................................................53

1. Introduction

Thank you for selecting our 2700 series research benchtop meter. This

microprocessor-based instrument incorporates a large LCD for clear viewing, yet

offers a small footprint to conserve space.

Each meter includes a convenient slide-out calibration card for quick reference. All

models (except for DO 2700) include an electrode arm and metal bracket which

can be easily attached to the left or right side of the meter according to your

preference.

The 2700 series benchtop meter replaces our popular 1100 and 2100 series

meters that were introduced in 2001.

Please note that this manual serves all 2700 models, so not all sections of the

manual will be relevant to each model. The chart below lists the parameters

served for the various models:

We take great pride in every instrument we manufacture and hope this one

serves you well.

If you are viewing an electronic version of this manual, you

can use 2Hhyperlinks located in the Table of Contents and

elsewhere by holding down the CTRL key as you click the

hyperlink.

Find other helpful tips listed in grey boxes like this one!

2. Getting Started

Keypad and Display

Auto Read is enabled. When flashing, the instrument has detected a ‘Stable’

reading and locked the value. Press MEAS to resume live reading. See

Section 3—Auto Read to disable this feature, or go to

SETUP…SYSTEM…AUTO READ.

Based on the stability criteria settings in System Setup, the instrument has

detected a stable reading.

Password Protection: Enabled. Requires password for all

calibration and setup menus

Password Protection: Disabled. No password required for any menu.

Print Setting Timed interval is active; data is being output at regular intervals.

“High Alarm”, “Low Alarm”, or “Cal Due” alarm limit had been reached.

High/Low alarms also have an audible notification..

Sample ID: User selectable five digit number to identify samples.

Measuring Range # of displayed value (1 thru 5). Applicable to Conductivity,

TDS, Salinity, or Resistivity measurements only

(ATC) Automatic Temperature Compensation is active; temperature is being actively

acquired with attached electrode. ATC is recommended.

(MTC)

Manual Temperature Compensation is active. A temperature sensor may not

be attached so the default temperature is used. See Section 9—Temperature

Calibration to calibrate the ATC or MTC temperature values.

Navigation of Tabs

Meter Connections

pH 2700

ION 2700 PC 2700

CON 2700 DO 2700

DC Power supply

RS-232 RS-232 output, 2.5 mm jack for RS-232 cable

CON/TEMP 8-pin DIN connection for 2-cell or 4-cell Con/TDS/Temp

electrodes

DO 8-pin DIN connection for Dissolved Oxygen/Temp self stirring

electrode

ATC

For Automatic Temperature Compensation probe.

For PC 2700, this corresponds to the temperature

measurement associated with the BNC (“pH”) input.

REF

Pin connection for half cell reference electrodes.

Requires separate half cell electrode in the BNC (“pH”) input.

Note: REF is not commonly used and is not required.

pH BNC connection for combination pH, ORP (Redox), or Ion

Selective Electrodes (ISE), or half-cell indicating electrodes.

3. System Setup & Configuration

Use the System Setup to customize operation of your 2700 series meter.

Press from the measurement screen and then press ENTER when

SYSTEM is highlighted to access these settings.

The following settings can be customized for each model:

STABILITY PRINT SET

STABILITY

CRITERIA DATE & TIME

AUTO READ PASSWORD

BACKLIGHT CLEAR DATALOG

DATALOG FACTORY RESET

PRINT SETUP CONTRAST

PRINT FORMAT

Stability

To aid with measurement and calibration, your meter has a unique feature that

provides an obvious visual indication when the reading becomes stable. If the

Stability feature is enabled, the digits on the primary reading will be faded when

unstable, becoming solid when stable. If this feature is disabled, the primary

reading will always be solid. The image below on the left is an unstable reading

during pH Measurement mode with Stability enabled. The image on the right

shows a stable reading.

Stability Criteria

The 2700 allows adjustment of the Stable indicator which relates to how fast and

frequent it appears. There are three levels of adjustment; SLOW, MEDIUM, &

FAST.

To display a ‘Stable’ reading more quickly and more often, use “FAST” setting.

MEDIUM or SLOW is recommended for most applications. When Auto Read is

enabled, a stability criteria setting of “SLOW” is recommended to for best results.

SLOW: The Stable indicator will take longer to appear and will appear less

frequently. Use this setting if you want the best results and don’t mind waiting

longer to get them.

MEDIUM: This is the factory default setting. It provides a balanced response

which works best for most applications.

FAST: The Stable indicator will appear quickest of any setting. If you find that the

Stable indicator frequently appears and disappears, you may want to select a

slower setting. This setting is not recommended when AUTO READ is enabled. It

is also not suitable for most non-refillable electrodes which are generally slower to

respond.

Auto Read

If AUTO READ is enabled, the measured value will automatically lock

when the Stable indicator appears. A flashing “AR” icon confirms this

condition. To resume a live reading again, it is necessary to press MEAS

each time Stable appears. Disable this feature to continuously view the active

reading.

Backlight

Select “PERMANENTLY ON” on to keep the backlight on at all times that the

meter is powered on. This will offer the best visibility but consumes the most

power.

Select “ON WITH KEY PRESS” to turn on the backlight for a specified time after

any key press. Select “0” to keep the backlight off at all times that the meter is

powered on.

Este manual sirve para los siguientes modelos

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