Instruction Manual pH 1000/ pH 2500 Bench pH/Ion Meter 68X090800 Rev. 5 07/03 Technology Made Easy ... Instruction Manual pH 1000/ 2500 Instruction Manual pH 1000/ 2500 Preface Thank you for choosing the pH 1000/ 2500 bench meter series. This manual serves to explain the use of the pH 1000/ 2500 Bench meter. The manual functions in two ways, firstly as a step-by-step operational guide to help you familiarize with the meter's features and functions. Secondly, it serves as a handy reference guide. This instruction manual is written to cover as many anticipated applications and uses of the pH 1000/ 2500 bench meter as possible. If there are doubts in the use of the meter, please do not hesitate to contact the nearest Authorized Distributors. Eutech Instruments/ Oakton Instruments cannot accept any responsibility for damage or malfunction to the meter caused by improper use of the instrument. The information presented in this manual is subject to change without notice as improvements are made, and does not represent a commitment on the part of Eutech Instruments Pte Ltd/ Oakton Instruments. Note: Eutech Instruments Pte Ltd/ Oakton Instruments reserves the right to make improvements in design, construction, and appearance of our products without notice. Copyright © 1998 All rights reserved. Eutech Instruments Pte Ltd Oakton Instruments Rev. 5 07/03 Instruction Manual pH 1000/ 2500 TABLE OF CONTENTS 1 INTRODUCTION 2 METER INFORMATION 2.1 2.2 2.3 2.4 2.5 2.6 3.1 4.1 4.2 4.3 4.4 4.5 Meter Parts Customized LCD Slide Out Card Rear Instrument Panel AC/DC-Adapter Electrode Primary & Secondary Functions of Keypad Connecting the Sensor Electrode Connecting the Temperature Probe Connecting the AC/DC Adapter Connecting the Chart Recorder Connecting RS232C Cable 1 1 1 1 1 1 2 2 3 KEYPAD FUNCTIONS 4 STARTING UP THE METER 3 3 6 6 6 6 6 6 5 TURNING THE METER ON AND OFF 6 CALIBRATION 6.1 pH Calibration (With ATC) 6.1.1 1 Point pH Calibration 6.1.2 Option 1 - Standard Buffers 6.1.3 Option 2 - Non-Standard Buffers 6.2 Multi-Point pH Calibration (Up to 5 Points) 6.3 Special Topic: CAL EDIT (for Custom/Non-Standard Buffers) 6.4 pH Calibration (without ATC) 6.5 Relative mV Calibration 6.6 Ion Calibration (for pH 2500 only) 6.7 Temperature Calibration 8 8 9 7 8 8 9 10 10 11 12 13 7 MEASUREMENT: READY, CONTINUOUS AND HOLD 7.1 Measurement in the READY Mode 7.2 Measuring in the Continuous Mode 7.3 HOLD Function 7.3.1 Holding and Releasing a Measured Value 7.4 Measuring pH 7.5 Measuring mV 7.6 Measuring Relative mV 7.7 Measuring Ion (for pH 2500 only) 14 14 14 14 14 15 15 16 16 8 SETUP FUNCTIONS AND KEYS 9 PROGRAM 1: LAST CALIBRATION TIME, DATE AND TEMPERATURE 10 PROGRAM 2: MEMORY RESET AND AUTO-OFF FUNCTION 11 PROGRAM 3: SET CURRENT TIME AND DATE 12 PROGRAM 4: COMMUNICATION SETUP 12.1 Switching pH Resolution 12.2 Setting the READY Indicator 12.3 Setting the Audible Beep 12.4 Viewing pH Electrode Offset 12.5 Viewing pH Electrode Slope 12.6 Viewing Ion Electrode Slope (for pH2500 only) 12.7 Setting the High and Low Setpoint Alarm (pH/mV/Relative mV) 12.8 Setting & Activating the Timer 12.9 Setting the Timer 12.10 Activating the Timer 12.11 Memory Input Functions and Options 12.12 Print Functions and Options 12.12.1 Print Function Options 17 18 19 19 20 22 22 22 22 22 22 23 23 24 24 25 26 26 13 TROUBLESHOOTING AND ERROR MESSAGES 27 Instruction Manual pH 1000/ 2500 14 ELECTRODE CARE 14.1 14.2 14.3 Electrode Activation Electrode Maintenance Storing pH/ORP electrodes 28 28 28 28 15 METER SPECIFICATIONS 16 ACCESSORIES 17 WARRANTY 18 RETURN OF ITEMS 29 30 32 32 Instruction Manual pH 1000/ 2500 1 INTRODUCTION Thank you for selecting pH1000/ 2500 bench meter. This step-by-step instruction manual gives you a detailed description on the use and operation of features on the meter. There are 2 models: pH1000 (pH/ mV/ Relative mV/ Temperature/ RS232C) and pH2500 (pH/ Ion/ mV/ Relative mV/ Temperature / RS232C). These meters are designed to be user-friendly while providing unprecedented levels of accuracy, repeatability and reliability. The pH 1000/ 2500 bench meter is an advanced microprocessor-based (ASIC-Application Specific Integrated Circuit) ideal for routine measurement that best meets discerning user's individual needs. This feature-rich meter has splash-proof keypad, simultaneous pH/ mV/ Ion and temperature display on a large angled custom LCD. Besides, the meter allows user customization via its SETUP feature, making the unit more powerful and user-friendly to cater to your individual needs. This instruction manual is illustrated with useful hints and diagrams that show which specific key-presses to access for each function. 2 METER INFORMATION The pH 1000/ 2500 bench meter is packaged in a corrugated box which is made of environmentfriendly materials and can be re-cycled. 2.1 Meter Parts The instrument is designed to give an aesthetic look as well as ergonomic functionality. A large custom dual LCD is provided at an angle for optimum viewing. A splash proof keypad with audible tactile response gives you a good feel of the instrument. A slide-out instruction card offers a handy reference in case of doubts. Listed below are the major parts of the meter. 2.2 Customized LCD The pH 1000/ 2500 bench meter is characterized by large dual custom LCD (Liquid Crystal Display). The display has also mode annunciators for pH, temperature, relative mV and mV readings. The secondary (lower) display shows the temperature readings simultaneously with the primary (upper) display of measured mode. Special annunciators such as graphical symbols, error messages, measurement units and modes of operation are arranged around the primary and secondary displays to give a comprehensive display. The integration of graphics and error messages into the LCD provides you a higher level of user-friendliness and easy readability. 2.3 Slide Out Card A plastic slide out card is provided at the bottom of the bench meter. The function of this card is to provide a quick guide to the functions of the individual keys as well as to provide a useful trouble shooting reference. 2.4 Rear Instrument Panel The pH 1000/ 2500 bench meter provides a set of connectors for the various accessories commonly used. In addition to all the connectors, pH 1000/ 2500 bench meter has an additional RS232C port to allow for data transmission between the meter and a printer or computer, Furthermore; it can be remotely controlled using a software from Eutech Instruments. Listed as follows are various connections available. 1 Instruction Manual pH 1000/ 2500 Connector ATC INPUT Function For phono jack connection from the temperature probe for Automatic Temperature Compensation. The probe should be a thermister type probe. For connecting sensors with a BNC connector to the meter. The meter accepts any pH, ORP or ISE electrode with a BNC connector. Always make sure that the connector is clean and dry. For connection to the pin tip type reference electrode normally used with half cell (mono) type pH or ISE electrodes. For connection to the strip chart recorder. For connection to the ground earth jack (standard pin tip connectors). For connection to the RS232C serial port. For connection to the AC power source to the power jack (DC). REF REC GND RS232C DC Rear View of the Meter 2.5 AC/DC-Adapter AC/DC adapters convert the power mains voltage 120/220 VAC to low DC voltage for the pH 1000/ 2500 bench meter operation. Two basic models of adapters are available depending upon power supply specification of each country. See accessories section. 2.6 Electrode Electrode is one of the most important parts of the meter. The electrode glass membrane is fragile and must be handled with care. A protective rubber cap containing a suitable storage solution to protect the glass membrane and to maintain activation of the glass membrane covers the pH electrode provided with the meter (when ordered). A special protective guide for use during measurements is enclosed to offer added protection against damage to the pH electrode glass bulb during operation. Maintenance of electrode is necessary from time to time. Please refer to Section 14 on Electrode Care. 2 Instruction Manual pH 1000/ 2500 3 KEYPAD FUNCTIONS The pH 1000/ 2500 bench meter is equipped with large tactile response keypad for ease of use. All keys have primary function with some keys having secondary functions. 3.1 Primary & Secondary Functions of Keypad ON/OFF Primary Function Secondary Function Numeric Value Turns meter on or off. None None SHIFT Primary Function Secondary Function Numeric Value Press to access the secondary functions of the meter. None None YES Primary Function Secondary Function Numeric Value Enter numeric values, confirm calibration points, or confirm and scroll program options or values selected. None None NO Primary Function Secondary Function Numeric Value Use to cancel incorrectly selected numeric value or selection made. None None 3 Instruction Manual pH 1000/ 2500 CAL/MEAS Primary Function Press to toggle between measurement and calibration modes of the meter - pH, Temperature, mV, Relative mV and Ion. Also use as exit from SETUP mode, secondary functions and to abort operation while in calibration mode. None None Secondary Function Numeric Value 1 / MODE Primary Function Secondary Function Numeric Value Select one of four measurement modes: pH/mV/Relative mV/Ion. None 1 2 / HOLD Primary Function Secondary Function Numeric Value Freeze the displayed value. Allow you to print the held reading or store it into memory. None 2 3 / SETUP / REL MV BASE Primary Function Secondary Function Numeric Value Enter SETUP mode of the meter for customization of meter functions as well as view some diagnostic functions. Display the Relative mV base value while in Relative mV mode and Ion Electrode Slope while in the Ion mode. 3 4 / / RESLN Primary Function Secondary Function Numeric Value Select next higher pH buffer values in the pH calibration mode. Also used to scroll through SETUP mode options. Toggle the pH resolution between 0.01 pH and 0.1 pH. 4 5 / / SLOPE Primary Function Secondary Function Numeric Value Select the next lower pH buffer value option in pH calibration mode. Also used to scroll through some SETUP mode options. Display the percentage slope of the pH electrode when in the pH mode. While in Ion mode, it displays slope of ion electrode in mV/decade. 5 6 / SET TEMP / OFFSET Primary Function Secondary Function Numeric Value Press to calibrate ATC temperature probe or to set manual temperature. Displays the offset of pH electrode. This is useful as a diagnostic function to determine the quality of the probe that is connected to the meter. 6 4 Instruction Manual pH 1000/ 2500 7 / CAL EDIT / BEEP Primary Function Secondary Function Press to edit pH buffer value while you are in pH calibration mode. Turns on or off `beep' sound whenever a key-press is depressed. Numeric Value 7 8 / ALARM / READY Primary Function Secondary Function Numeric Value Enter the high and/or low alarm values. Turns on or off the READY function. 8 9 / ACTIVATE / SET TIMER Primary Function Secondary Function Numeric Value Press to start timer countdown. Sets the time interval. 9 . / MI / OPT Primary Function Secondary Function Stores the displayed value into memory. Activate different Memory Input Options, these include: Data Log on Ready Data Log on Time Interval Set Time Interval for Data Log . (decimal point) Numeric Value 0 / MR / OPT Primary Function Secondary Function Recalls stored values from the memory in the Last-In-First-Out (LIFO) sequence. Activate different Memory Recall options. There are two options: Print all memory data Clear memory 0 Numeric Value +/- / PRINT / OPT Primary Function Secondary Function Output the displayed data through the serial/RS232C port. Can be activated in the measurement, HOLD functions and memory recall functions. Sets the different print options. There are three options: Print on ready Print on time interval Set print time interval Numeric Value +/- 5 Instruction Manual pH 1000/ 2500 4 4.1 STARTING UP THE METER Connecting the Sensor Electrode Slide the sensor electrode connector of the electrode over the INPUT BNC socket. Then push the connector into the socket and turn the connector clockwise to lock into position. Do not use excessive force. This applies to combination pH/ORP/ISE electrodes. For half-cell sensors where a reference electrode is used, connect the sensor connector to socket marked (REF). Always ensure that the connectors are dry when connection is done. 4.2 Connecting the Temperature Probe The temperature probe uses a phono jack to connect with the socket marked ATC on the meter. Insert the jack directly into the socket until it is firmly seated. 4.3 Connecting the AC/DC Adapter Ensure that the power to the AC/DC adapter is switched off. Slide the AC/D ...