Instruction Manual pH 1100/ pH 2100 Bench pH/Ion Meter Technology Made Easy ... 68X090818 Rev. 3 07/03 Instruction Manual pH 1100/ 2100 PREFACE Thank you for selecting the pH 1100/ 2100 benchtop meter. This meter measure pH, millivolts, relative millivolts and temperature. The pH 2100 meter also measures ion concentration. The instruction manual serves to explain the use of the pH 1100/ 2100 bench meter as a step-by-step operational guide to help you familiarize with the meter's features and functions. It is structured sequentially with illustration of diagrams that explains the various functions and setup menus available. This manual is written to cover as many anticipated applications and uses of the pH 1100/ 2100 Bench meter as possible. If there are doubts in the use of the meter, please do not hesitate to contact the nearest Authorized Distributor or Customer Service Dept. for assistance. Eutech Instruments/ Oakton Instruments reserve the rights to change, make improvement and modify specifications without prior notice and cannot accept any responsibility for damage or malfunction to the instrument caused by improper use. Copyright 2002 Eutech Instruments Pte. Ltd. Oakton Instruments All rights reserved. Rev. 3 07/03 © Instruction Manual pH 1100/ 2100 TABLE OF CONTENTS 1 INTRODUCTION 1.1 1.2 1.3 1.4 2 Introducing the Bench Meter Series Keypad Rear Panel Electrode Holder 6 6 7 8 9 10 10 10 10 10 11 11 11 12 13 14 15 16 16 16 17 18 18 18 19 20 20 21 22 23 23 23 24 24 24 25 25 25 25 26 26 26 27 27 27 28 28 29 30 30 30 31 31 32 33 34 35 STARTING UP 2.1 Back Panel Connections 2.2 Powering up and powering down 2.2.1 Powering up 2.2.2 Powering down 3 PH CALIBRATION & MEASUREMENT 3.1 pH calibration 3.1.1 Automatic Temperature Compensation (ATC) 3.1.2 Starting pH calibration 3.1.3 Standard pH buffer calibration 3.1.4 Custom pH buffer calibration 3.1.5 Calibration error messages 3.2 pH measurement 3.2.1 Automatic temperature compensation 3.2.2 Adjusting manual temperature compensation 3.2.3 Taking pH Measurements 4 mV CALIBRATION AND MEASUREMENT 4.1 mV Calibration 4.1.1 mV Calibration error message 4.2 mV Measurement 5 ION CALIBRATION AND MEASUREMENT (ONLY APPLICABLE FOR pH 2100) 5.1 5.2 5.3 6 Ion calibration Ion calibration error messages Ion measurement MEMORY FUNCTIONS 6.1 Memory input 6.1.1 Manually storing a reading into memory 6.2 Memory recall 6.2.1 Recalling readings in manual recall mode 6.2.2 Recalling readings in automatic recall mode 7 8 STABILITY INDICATOR ALARM FUNCTIONS 8.1 8.2 High and Low measurement alarm Calibration due alarm Temperature Calibration Temperature Calibration Error Messages 9 TEMPERATURE CALIBRATION 9.1 9.2 10 SETUP MODE 10.1 Setup mode overview 10.1.1 pH/Temperature setup submenus 10.1.2 mV setup submenus 10.1.3 Ion setup submenus (pH 2100 only) 10.1.4 Meter general configuration setup submenus 10.2 pH/ temperature setup mode 10.2.1 Entering pH/temperature setup mode 10.2.2 pH buffer setup program P1.0 10.2.3 pH resolution setup program P1.1 10.2.4 Temperature unit setup program P1.2 10.2.5 pH Measurement Alarm Setup Program P1.3 10.2.6 pH Calibration Due Alarm Setup program P1.4 10.2.7 Stability Setup Program P1.5 10.2.8 View pH calibration data setup program P1.6 Instruction Manual pH 1100/ 2100 10.2.9 pH calibration data reset setup program P1.7 10.3 mV setup mode 10.3.1 Entering mV setup mode 10.3.2 mV measurement alarm setup program P2.0 10.3.3 mV calibration due alarm setup program P2.1 10.3.4 Stability setup program P2.2 10.3.5 View mV calibration data setup program P2.3 10.3.6 mV calibration data reset setup program P2.4 10.4 Ion setup mode (pH 2100 meter only) 10.4.1 Entering ion setup mode 10.4.2 Ion unit setup mode P3.0 10.4.3 Ion measurement alarm setup program P3.1 10.4.4 Ion calibration due alarm setup program P3.2 10.4.5 Stability setup program P3.3 10.4.6 Ion mode setup program P3.4 10.4.7 View ion calibration data setup program P3.5 10.4.8 Ion calibration data reset setup program P3.6 10.5 Meter general configuration setup mode 10.5.1 Entering meter general setup mode 10.5.2 Date/time setup mode P4.0 10.5.3 Backlight setup mode P4.1 10.5.4 Data log setup mode P4.2 10.5.5 Memory recall setup mode P4.3 10.5.6 Communication setup mode P4.4 10.5.7 Data transfer setup mode P4.5 10.5.8 Memory clear setup mode P4.6 10.5.9 Meter reset setup mode P4.7 11 ELECTRODE CARE 11.1 11.2 11.3 Electrode Activation Electrode Maintenance Storing pH/ORP electrodes 36 37 37 38 39 40 41 42 43 43 43 44 45 46 47 48 49 50 50 50 51 52 52 53 53 54 54 55 55 55 55 56 56 56 56 57 57 57 57 58 59 60 61 62 12 RS 232 COMMUNICATION 12.1 Using with printer 12.1.1 Sending data to printer 12.2 Using with computer 13 ADDITIONAL INFORMATION 13.1 13.2 13.3 pH and Temperature pH Buffer Calibration Solution Standard pH Buffers 14 SUMMARY OF DEFAULT SETTINGS / OPTIONS 15 TROUBLESHOOTING & ERROR MESSAGES 16 SPECIFICATIONS 17 ACCESSORIES 18 WARRANTY Instruction Manual pH 1100/ 2100 1 1.1 INTRODUCTION Introducing the Bench Meter Series The pH 1100/ 2100 bench meter is microprocessor-based which incorporates new ASIC (Application Specific Integrated Circuit). It is designed with convenience in mind and offers many advanced, user-friendly features. The meters are capable of storing and recalling up to 100 data sets in its non-volatile memory. In addition, as a space saver, an optional swivel electrode holder can be attached at the either side of bench meter for resting the electrodes and probes during operation. The pH 1100/ 2100-- bench meter measures pH, millivolts, relative millivolts and temperature. The pH 2100 meter also measures ion concentration. These meters are equipped with a large customized LCD (Liquid Crystal Display) with simultaneous display of the measured values for easy reading. It is most ideal for routine pH/Ion Concentration measurement in indoor applications. 6 Instruction Manual pH 1100/ 2100 1.2 Keypad See Figure 1. A large membrane keypad with touch feedback makes the meter easy to use. Names and symbols describe the function button controls. Figure 1: Membrane Keypad ON/OFF ENTER EXIT CAL / MODE HOLD SETUP / MI / MR PRINT Numeric Keys (0-9 & .) - (Minus) Power meter On or Off Confirm selection in all modes of operations; Scroll through the sub-menus program in the SETUP modes Exit from current modes of operations; Exit from calibration mode after 3rd point calibration (for pH/Ion) Enter into calibration modes of the meter; Select or scroll to the next options available Select the measurement modes:- pH, Ion Concentration, mV, Relative mV Freeze the displayed value; allow you to print the held reading or store it into memory Enter SETUP mode of the meter for customization of meter functions as well as view some diagnostic functions (refer to the table for details of SETUP menus) Store the displayed value into memory; Increment values or scroll through the next options available Recall stored values from the memory in the Last-In-First-Out (LIFO) sequence; Decrement values or scroll through the next options available Send measured data being measured or data stored in the memory to a peripheral device via the RS232C port of meter Enter numeric values and decimal point at appropriate places Enter negative sign at appropriate places 7 Instruction Manual pH 1100/ 2100 1.3 Rear Panel See Figure 2. The pH 1100/ 2100 meters provide a complete set of input connections for the various accessories commonly used. Listed in the table below are details of the connections that you can make. Figure 2: Rear View of Meter Connector ATC Function For phono jack connection from the temperature probe for Automatic Temperature Compensation. The probe should be a 30K thermistor 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. INPUT REF 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 of the AC adapter power supply (included). REC GND RS232 DC 8 Instruction Manual pH 1100/ 2100 1.4 Electrode Holder The electrode holder is included in the same box as the meter. To attach the electrode holder to the meter: 1. The electrode holder base attached to the bottom of the meter comes in the shipping position. See Figure 3. Use a Phillips screwdriver to remove the screw holding the electrode holder in shipping position. See Figure 3. Slide the electrode base away from the meter until the second screw slot lines up with the original screw hole. Use the screw removed earlier to secure electrode holder base into position. See Figure 3. The electrode holder arm is reversible. If desired, remove screw holding electrode holder base and slide base out of brackets. Slide base into brackets on opposite side and replace screw. To install the electrode arm, turn meter back to the upright position. See Figure 4. Line up the hole on the base of the electrode holder arm with the peg on the electrode holder base. Slide the hole securely onto the electrode holder base. See Figure 4. The electrode arm is now ready to swing into desired position. 2. 3. 4. 5. 6. Figure 3: Bottom of Meter 7. Figure 4: Fix electrode holder arm to holder base 9 Instruction Manual pH 1100/ 2100 2 STARTING UP Attention: Do not get water on the BNC connector during operation. Avoid touching the connector with soiled or wet hands. 2.1 Back Panel Connections Refer back to Figure 2. Make the necessary connections as mentioned in Section 1.3 Rear Panel, pg 8. 2.2 2.2.1 1. Powering up and powering down Powering up When first connected to the power supply, the meter runs a self test, the display flashes Hardware Testing... Status: Pass. See Figure 5. It then displays current date and time. See Figure 6. This display will also appear when the meter is turned off while still connected to the power supply. See Figure 6. See Figure 7. To turn the meter on press ON/OFF. The upper display flashes Bench pH/Ion 2100 for the pH 2100, (Display flashes Bench pH 1100 for the pH 1100 meter.) and then the lower display flashes SW Rev 1.20. See Figure 7. The display flashes System Initializing, Please wait... See Figure 8. If this is the first power up since the power was connected, you must indicate desired measurement mode. Use >/CAL to select. The mode selected will flash. See Figure 9. Press ENTER to confirm. The meter then enters measurement mode. After initial startup, the meter will automatically return to the measurement mode previously selected as long as power connection is maintained. Hardware Testing. . . . Status: Pass Figure 5 2. Date Time Jan 25 2002 09:09:30 Figure 6 3. Bench pH/Ion 2100 SW Rev 1.20 Figure 7 4. 5. System Initializing Please wait. . . Figure 8 6. pH/Temp mV Ion Select & Press ENTER Figure 9 2.2.2 1. Powering down System Shutting Down Please wait. . . Figure 10 To turn the meter off press ON/OFF. The display flashes System Shutting Down, Please wait... See Figure 10. Then, the date and time display will appear. See Figure 6. The date and time will continue to display until the power supply is disconnected. 10 Instruction Manual pH 1100/ 2100 3 3.1 PH CALIBRATION & MEASUREMENT pH calibration This meter is capable of up to 5 point calibration with selectable buffer sets (USA, NIST, Bf1, Bf2 or any 5 custom buffers of your choice). The meter retains stored pH calibrations even when turned off. For best accuracy, we recommend that you perform at least a 2-point calibration using buffers that bracket (one above and one below) the expected sample range. A single point cal is possible only at the offset points namely 7.00 or 6.86. For custom buffer sets, you must perform at least a 2 point calibration. Selectable buffer sets: USA: 1.68, 4.01, 7.00, 10.01, 12.45 NIST: 1.68, 4.01, 6.86, 9.18, 12.45 Bf1: 1.68, 4.01, 6.86, 10.01, 12.45 Bf2: 1.68, 4.01, 7.00, 9.18, 12.45 Any 5 user selected custom buffers To select which buffer sets you wish to use see Section 10.2.2: Program pH Buffer Setup: P1.0 in the pH/Temp setup mode (page 30). When you recalibrate your meter, old pH calibration points are replaced on a point by point basis. For example, if you previously calibrated your meter at pH 4.01, 7.00, and 10.01, and you recalibrate at pH 7.00, the meter retains the old calibration data at pH 4.01 and pH 10.01. To view current calibration points, see Section 10.2.8: Program pH Cal Data P1.6 in the pH/Temp setup mode (page 35). If you choose to recalibrate to only 1 or 2 pH values, the older calibration values you do not calibrate to will remain stored. These old stored calibration values may cause accuracy loss when your readings are ...