Jenway 3540 User Manual

Model 3540 Combined pH & Conductivity Meter Operating Manual Safety This is important information; please read carefully before installing or

11. The temperature coefficient is very dependent on the solution being measured and its concentration level. The effect of temperature change on con

Section 2 Getting Started 2.1 Unpacking Remove the 3540 from the packaging and ensure the following items are included: 1. Model 3540 pH/Conducti

2.22 Electrode Holder Assembly The electrode holder requires minimal assembly (refer to the diagram below). 4123Decide on which side of the instrum

2.2.3 Power Supply, probes and accessory connection Rear Panel showing Input and Output Connectors 1. Ref Socket 2mm-pin type socket. Connecti

Section 2.24 Installation Verification 1. Connect the power supply, conductivity cell and ATC probe to the rear panel, as described in the previous

Section 3 Set Up - General 3.00 General Set Up The general set up options include instrument wide functions that are relevant for both pH and condu

3.10 Instrument Set Up The Instrument Set Up menu contains options for selecting the operating language and adjusting the brightness of the display t

To change the brightness of the display press the down arrow to highlight the LCD Brightness (%) option in the Instrument Set Up screen, then press th

Contents: Section 1 Introduction Instrument description 1.1 Display & controls 1.2 Outputs 1.3 Electrode Selection

3.20 GLP Set Up The GLP Set Up menu contains options for entering a User ID (4-digit code), a Batch ID (3-digit code) and the Security Code options.

To change or set a Batch ID, press the down arrow to highlight the Batch ID option in the GLP Set Up screen, then press the Enter key. The highlight w

The following sub-menu is displayed. Security Set Up sub-menu 3.23 Data Entry Security To enable or disable data entry security (as described above

3.30 Data Logging Set Up The data logging set up menu enables all the functions of the data logger to be set, including the event trigger, logging pe

To change the data logging trigger press the down arrow to highlight Data Log Event in the Data Logging Set Up screen, then press the Enter key. The h

To change the data log interval from the default value or to set a new interval press the down arrow to highlight Data Log Interval in the Data Loggin

3.35 Prompt Before Deleting Data stored in memory can be deleted by use of the clear [CLR] key on the keypad. If this option is enabled it allows the

To change the clear key function, press the down arrow to highlight ‘Clr Key’ in the Data Logging Set Up screen, then press the Enter key. The hig

3.38 Print Channel This enables the print data to be configured so that just conductivity, just pH or conductivity and pH results are printed, reducin

3.43 Time Setting To adjust the time (see warning in paragraph 3.40) Press the down arrow to highlight the Time option in the Clock Set Up screen. Th

Section 9 Accessories and Spares Optional accessories 9.1 Spares 9.2 Section 10 Specification & Data Technical s

Section 4 Conductivity Set Up 4.00 General Set Up The conductivity set up options include settings for all the functions that are relevant for the

4.10 Conductivity Calibration Set Up The conductivity calibration set up menu contains options for setting the Cell Constant (K factor), the EC ratio

4.12 EC Ratio Setting The EC ratio is the factor that calculates the TDS value from the conductivity measurement. There are a number of different int

Should you require to change the temperature co-efficient press the down arrow key to highlight Temperature Co-efficient (%) in the Conductivity Calib

4.16 Calibration Standard Set up A sub-menu for the selection of calibration standards, including the manual or automatic recognition of from one to

Press the down arrow in the Conductivity Calibration Set Up sub menu to highlight the Cal 1 (2 or 3) Buffer(mS) option. Press the Enter key to move th

To select the sub-menu for setting the Calibration Reminder options press the up or down arrow key to highlight Calibration Reminder Set up… in the Co

Cal Reminder Audible Alarm When the cal reminder interval has elapsed a visual warning is displayed in place of the relevant reading, to enhance this

Section 1 Introduction 1.1 Instrument Description The model 3540 pH/conductivity meter is a dual channel, dual readout instrument that displays bot

To enable the alarms and set the relevant high and low alarm levels press the down arrow key in the Conductivity Set Up menu to highlight Alarms Set U

4.23 Alarm Point Settings… A sub-menu for setting the high and low alarm points for each mode can be accessed by pressing the down arrow in the Alarm

icon will then be displayed and an optional audible alarm can be enabled. The period over which the instrument looks for stability can be adjusted for

4.33 Endpoint Stability (Sec) The endpoint algorithm looks for a reading that is stable, within a certain window of variation, over a set period of

Escape key to return to other menu levels or continue with setting the Manual Temperature Compensation value as follows. 4.42 Manual Temperature (oC

Section 5 pH Set up 5.00 The pH set up options include settings for resolution, calibration values and number of buffers as well as alarm settings

5.10 pH Resolution The pH display can be set to have a resolution of 0.1pH, 0.01pH or 0.001pH depending on your application and regulatory/reporting r

5.30 Calibration Set Up A separate sub-menu is available for entering and setting calibration data. To access this sub-menu press the down arrow key

1.2 Display and Controls The model 3540 has a back lit 1/8 VGA dot matrix LCD. In normal measurement mode the left-hand side displays the conductivi

Selecting the Manual option enables alternative buffers to be used by entering their respective values as the Manual Cal 1 to 3 Buffers in this sub-me

right or left arrow keys can be used to move the highlight to the other digits which in turn can be set, with the up or down arrow keys, to the desire

calibration reminder interval can be set from 1 hour to 999 hours and can only be cleared by carrying out a new calibration. To set the calibration re

An output from the rear panel sockets is also available to switch external audio/visual alarms or for simple control/telemetry functions via external

when it is highlighted on the display. Then use the ESC key to return to other menu levels, the main measurement screen or continue with the alarms s

the Enter key to accept this value. Use the up or down arrow key to adjust other alarm settings as required or press the ESC key to escape to other me

5.46 Endpoint Audible Alarm To complement and re-enforce the display of the endpoint icon an audible alarm can be enabled to indicate a reading reach

5.48 pH ATC/MTC Set Up Temperature measurement and compensation processes are carried out automatically during measurement procedures. However adjust

Section 6 Calibration 6.10 pH Calibration Up to three calibration points may be used during a pH calibration procedure. Auto-buffers may be selected

The prompts in the preceding display request the first point of a three point calibration (1 / 3) indicating that the current buffer is 7.015 at 21.6o

The Enter key confirms selections as they are made in the set up menus. With the measurement screen displayed it acts as the Store [STO] key and store

The display now changes to request the third buffer (3 / 3), rinse the electrode with de-ionised water and blot up any excess with clean, soft tissue,

6.20 Conductivity Calibration There are three methods for calibrating the conductivity channel. The simplest is by setting the cell constant (K factor

careful re-calibration against precision standards a new cell constant can be determined after a period of use. To calibrate against a known cell co

Details and prompts are shown in the Icon bar throughout the calibration procedure. The following display shows the first point in a three point calib

If a two-point calibration has been selected then the main measurement screen is returned at this point. The display now changes to request the third

Section 7 Measurements 7.1 pH and Conductivity Measurement Following successful calibration of one or both channels, measurement is simply carried

7.20 mV Measurement The mV measurement mode can be used for Redox (ORP) measurement as well as probe diagnostics. The mV mode can be accessed by pre

An example screen of stored results To review stored results use the right or left arrow key to highlight the Results tab. See section 3.3 for detai

An example screen of stored results To review stored results use the right or left arrow key to highlight the Results tab. See section 3.3 for detai

Maintenance & Troubleshooting 8.1 General The Model 3540 is designed to give optimum performance with minimum maintenance. It is only necessar

1.5 Good Practice Guidelines – pH 1. Selection of the correct electrode for your application is the most important factor in achieving good perform

8.3 Troubleshooting - pH Fault Possible Cause Action No display Check power supply Check that correct 9V ac power supply is connecte

8.4 Troubleshooting - Conductivity Fault Possible Cause Action No display Check power supply Check that correct 9V ac power supply i

8.60 Functional Check – Conductivity A simple but effective method for checking the conductivity channel can be made with two 10K ohm resistors. One

conductivity reading should be between 180 and 220µS depending on the last calibration or cell constant setting – if in doubt set the cell constant to

Section 9 Optional Accessories 9.1 Accessories The following items are available as optional accessories: 060 406 Dust cover 037 701 IrDA/Serial

Miscellaneous 025 160 3M KCl electrode fill solution (100ml) 025 161 Electrode cleaning solution (500ml) Conductivity Calibration Standards 025 1

Section 10 Specification & Data 10.1

10.2 Analogue Output The Model 3540 is provided with 2 x 4mm sockets, marked as Analog O/P on the rear panel. The level is proportional to the displa

Setting of these options is detailed in Section 3.37 and 3.38 The Model 3540 supports both hardware (CTS/RTS) flow control and software XON/XOFF fl

Most recent calibration information Eo value Slope efficiency Buffer type This will also be followed by result data dependent on the mode selected. T

13. Storage conditions can have a greater impact on electrode performance and operational life than sample type. Store only as directed in the instr

Addendum pH Auto-Buffer & Conductivity Auto-Standard Sets Ad.1 Jenway Auto-Buffer Set Temperature 0oC 10oC 20oC 25oC 30oC 40oC 50oC 60oC

EC Declaration of Conformity JENWAY Model 3540 pH/Conductivity Meter complies with the following European Standards: EN 50081-1:1992 electromagneti

1.6 Good Practice Guidelines – Conductivity 1. After using the conductivity probe ensure it is rinsed thoroughly, or cleaned then rinsed if used in