Model 611 Benchtop ph/mv/orp/bod Meter

Transcription

1 Model 611 Benchtop ph/mv/orp/bod Meter INSTRUCTION MANUAL STD MV BY ph 0 TEMP 2 CALIB % SLOPE digital ph/millivolt meter 611 log R compensation A Thermo Electron business

2 AQUAfast, Cahn, EZFlash, Ionalyzer, ionplus, KNIpHE, ORION, perphect, PerpHecT, PerpHecTion, phisa, phix, phuture, Pure Water, Sage, Sensing the Future, SensorLink, Sure-Flow, Titrator PLUS, TURBO2 and Wine Master are registered trademarks of Thermo Orion pHAX-ION, A +, All in One, Aplus, AQUAsnap, AssuredAccuracy, AUTO-BAR, AUTOCAL, AUTO DISPENSER, Auto-ID, AUTO-LOG, AUTO-STIR, AUTO-READ, BOD AutoEZ, Cable-Free, CERTI-CAL, CISA, DataCOLLECT, DataPLUS, digital LogR, DirectCal, DuraProbe, Environmental Product Authority, Extra Easy/Extra Value, FAST QC, Flash GC, GAP, GLPcal, GLPcheck, GLPdoc, KAP, LabConnect, LogR, Minimum Stir Requirement, MSR, NISS, One-Touch, One-Touch Calibration, One-Touch Measurement, Optimum Results, Pentrode, phuture MMS, phuture Pentrode, phuture Quatrode, phuture Triode, Quatrode, QuiKcheK, rf link, ROSS, ROSS Resolution, SAOB, Stacked, Stat Face, The Enhanced Lab, ThermaSense, Triode, TRIUMpH, Unbreakable ph, Universal Access are trademarks of Thermo Orion. Guaranteed Success and The Technical Edge are service marks of Thermo Orion. PerpHecT meters are protected by U.S. patent 4,321,544. ROSS and PerpHecT ROSS are protected by U.S. patent 4,495,050. ORION Series A meters and 900A printer are protected by U.S. patents 5,108,578, 5,198,093, D334,208 and D346,753. ORION 81, 82, 91, and 92 series glass electrodes are protected by U.S. patents 4,661,236 and 4,687,500. Sure-Flow electrodes are protected by European Patent 278,979 and Canadian Patent 1,286,720. ionplus electrodes and Optimum Results solutions have patents pending. Copyright 2001, Thermo Orion. All rights reserved. The specifications, descriptions, drawings, ordering information and part numbers within this document are subject to change without notice. This publication supersedes all previous publications on this subject.

3 Table of Contents Chapter I General Information 1 Introduction 1 Chapter II Instrument Description 2 Front Panel 2 Rear Panel 3 Chapter III Instrument Set-Up 4 Installation 4 Checkout Procedures 4 Electronic Temperature Calibration 5 Chapter IV Measurement Procedures 6 ph Measurement 6 A. Set-Up 6 B. Single-buffer Calibration 6 C. Two-buffer Calibration 7 Temperature Measurement 7 A. Temperature Calibration at Two Temperatures 7 B. Use of ph Electrode as a Thermometer 9 Dissolved Oxygen Measurement 9 Potentiometric Titrations 10 Polarized Electrode Titrations 10 Chapter V Use with Strip Chart Recorders 11 Chapter VI Instrument Warranty 12 Chapter VII Repair and Service 15 Chapter VIII Notice of Compliance 16 Chapter IX Ordering Information 17 Chapter X Specifications 18

4

5 Chapter I General Information Introduction Obtaining accurate ph values depends on both correct measurement of standard and sample temperatures, and on compensation for any variations in these temperatures. This thermal compensation has generally been accomplished either manually, (by measuring sample solution with a thermometer and then dialing in the measured temperature on the meter), or automatically, (by placing a separate temperature probe together with a ph electrode in the solution). Both actions will modify amplifier gain or change the potential at the input of an A/ D converter, to scale the measurement into temperaturecompensated values. The Model 611 ph Meter requires no temperature dial or separate temperature probe. The meter measures temperature change through resistance changes that occur in the ph electrode, and uses this information to automatically compensate for ph/temperature readings. The Model 611 s temperature measurement ability is based on the relationship of ph electrode resistance to temperature. The log of resistance of the electrode varies almost proportionately with temperature. All ph electrodes have a negative temperature coefficient of about 8% per degree, that is, electrode resistance doubles for every 10 C drop in temperature. Although ph electrode resistance at any given temperature varies from electrode to electrode, all ph electrodes exhibit approximately the same percentage change in resistance with temperature. A simplified block diagram of Model 611 appears below. DISPLAY F.E.T. INPUT (E + E 0 ) + A.C. AMP (E) + A.C. A.C. REJECT (E) ANALOG TO DIGITAL CONVERTER N.C. TEST (100 M) (REAR PANEL) ph CALIB. CONTROL (FRONT PANEL) TEMPERATURE SCALING FACTOR LINEARIZER % ph SLOPE (FRONT PANEL) CURRENT MEASURING RESISTOR ~ D.C. BLOCKING CAPACITOR A.C. DRIVE SIGNAL CURRENT AMP A.C. VOLTAGE DECTECTOR PHASE INFO. A.C. CURRENT DECTECTOR + - LOG AMP TEMPERATURE SLOPE (REAR PANEL) TEMPERATURE CALIBRATION (REAR PANEL) LOG OF ELECTRODE RESISTANCE Figure Block Diagram ph ELECTRODE General Information 1

6 Chapter II Instrument Description Front Panel See Figure Display Model 611 automatically reads out data in seven-segment numerals, with polarity sign and decimal point. 2. Function Switch Model 611 has a five-position function switch which includes these positions: STD BY Indicated by decimal point only. Used instead of ON/OFF position to eliminate temperature fluctuation, to keep the instrument ready for use, and to increase component life. ph Reads temperature-compensated ph measurements between 0.00 and 14.00, precise to 0.01 ph unit; adjustable with calibration control (CALIB). TEMP Reads temperature in degrees Celsius from to MV Reads electrode potential measurements in relative millivolts between to , precise to 1 mv or ± 0.2% of reading, whichever is greater; adjustable with calibration control (CALIB). O 2 Displays dissolved oxygen concentration in ppm between 0.00 and CALIB Adjusts ph and millivolt reading during calibration procedure. 4. % SLOPE Allows compensation for slope in 1% increments between 80 and 105% regardless of sample temperature STD MV BY ph 0 TEMP 2 CALIB % SLOPE digital ph/millivolt meter 611 log R compensation Figure 2 Front Panel of Model Instrument Description

7 Rear Panel See Figure INPUT (ph) Sensing electrode jack. Accepts ph and redox electrodes with BNC connector. 2. REF (ph) Reference electrode jack. Accepts standard pin-tip connectors. 3. KF Polarizing current source (-10 microamperes) for Karl Fischer titrations. Jacks accept standard pin-tip connectors. 4. O 2 (Input) Oxygen sensor electrode jack. Accepts Model Dissolved Oxygen Electrode with BNC connector. 5. REF (0 2 ) Oxygen electrode reference jack. Accepts standard pin-tip connector. 6. REC Strip chart recorder binding posts. Red post is positive ( + ) and black post is negative ( - ) 7. GND Earth-grounded jack for other system case grounds e.g., magnetic stirrers. Jack accepts standard pin-tip connectors. 8. TEST Switch for assessing correct meter performance 9. TEMP ADJ Control for calibrating meter with respect to temperature. Adjusts for variations in ph electrode resistance from electrode to electrode at any given temperature. 10. FUSE 1/4 amp SLO-BLO fuse for 110/115V 1/8 amp SLO-BLO fuse for 220/240 V. 11. POWER CONNECTION for line cord. Power requirements are 100 / 115 / 220 / 240 AC (± 10%), 50/60 Hz, 16 watts. 12. REC ADJ Adjusts recorder output voltage to accommodate potentiometric strip chart recorders with input sensitivities up to 100 mv for full-scale reading. 13. FS ADJ Factory-adjusted trimpots for full-scale deflection. Any adjustment of these trimpots without a precision voltage source will disturb meter calibration. 14. TEMP SLOPE Trimpot provides compensation for variations in resistance from ph electrode to ph electrode as a function of temperature. 15. BCD BCD output not currently operational. Figure 2 Rear Panel of Model INPUT KF O2 REC REF 3 REF DISCONNECT SUPPLY BEFORE CHANGING FUSE 4 5 REC ADJ TEST ELECTRIC SHOCK HAZARD DO NOT REMOVE COVER REFER SERVICING TO QUALIFIED SERVICE PERSONEL FS ADJ GND TEMP SLOPE 8 TEMP ADJ Instrument Description 3

8 Chapter III Instrument Set-Up Installation 1. Ensure that the package contents include 611 Meter, support rod and electrode holder, BNC shorting cap (attached to meter input), line cord and warranty card. 2. Verify that the rear panel specifications label shows correct line voltage. 3. Attach support rod to the Model 611. Turn the meter on its side on a soft pad to protect the case. Remove the two flat-head screws from the bottom of the case. 4. Fasten the support on either side of the case, using the two screws. 5. Mount electrode holder on the support rod, hold in position and tighten the thumbscrew. 6. On instruments wired for 220 or 240 V, a gray line cord is supplied with a molded plug. If this plug does not fit the available socket, replace it, matching the brown wire to live, the blue wire to neutral, and the green-and-yellow to a suitable earth ground. Checkout Procedures Meter Checkout Perform the following steps to determine if your Model 611 is operating properly. If checkout fails, contact your Thermo Orion Representative. 1. Connect the BNC shorting cap to INPUT (ph). 2. Turn Function Switch to STD BY. 3. Connect the power cord to the appropriate AC voltage source. If your power source is ungrounded, ground the chassis by connecting the green wire on a two-prong adaptor plug to a water supply pipe or other suitable ground. The GND jack on the rear panel permits grounding of auxiliary instruments. Allow 30 minutes for system to warm up. 4. With the Function Switch in STD BY, verify that only a decimal point is displayed. 5. Turn the Function Switch to MV and verify that polarity sign appears with numbers. Adjust display to 000 with CALIB. 6. Turn the Function Switch to ph. Turn CALIB until 7.00 is displayed. Verify that turning % SLOPE does not offset the reading more than ± 0.02 ph. 7. Turn Function Switch to TEMP. Set display to 50.0 ± 0.2 using TEMP ADJ control. 8. Press and hold TEST switch on rear panel. Display should read 25.0 ± 0.5. If instrument fails this, perform Electronic Temperature Calibration. 4 Instrument Set-Up

9 Electronic Temperature Calibration 1. Connect the BNC shorting cap to INPUT (ph). 2. Turn Function Switch to TEMP. Set display to 50.0 ± 0.1 using TEMP ADJ on rear panel. 3. Press and hold TEST switch on rear panel. Using a small screwdriver, adjust TEMP SLOPE control until display reads 25.0 ± Release TEST and display should return to 50.0 ± 0.2. If not, repeat steps 2 and 3. Instrument Set-Up 5

10 Chapter IV Measurement Procedures ph Measurement A. Set-Up 1. Leave the Model 611 in STD BY to eliminate warm up and increase component life. Allow one-half hour warm up if meter has been disconnected. 2. Securely connect ph and reference electrodes, or combination ph electrode into INPUT (ph) and REF (ph) on the rear panel. 3. Verify that reference filling solution level in the electrode is adequate. The level of filling solution should be higher than the sample level. 4. Stir buffer and sample during analysis with a magnetic stirrer, if possible. 5. Rinse electrodes with distilled water between measurements. B. Single-buffer Calibration 1. Place electrodes (or combination ph electrode and a thermometer) in a buffer solution with a ph value within three ph units of the expected value of the sample. For maximum precision, stir throughout the measurement. 2. Set % SLOPE to 100%. 3. Turn Function Switch to TEMP. 4. Using TEMP ADJ on the rear panel, set the display to the thermometer temperature reading. The meter is now adjusted for temperatures near the set point. If greater accuracy is desired, use the temperature calibration procedure. Calibrate for temperature whenever a new electrode is installed. 5. Turn Function Switch to ph. 6. Using CALIB, set the display to the buffer value at the temperature being measured. (Check buffer packet or bottle for ph value at solution temperature, or see Table 1.) 7. Remove the electrode(s) from the buffer solution and rinse with distilled water. 8. Place the electrode(s) in the unknown sample. Allow reading to stabilize. 9. Read ph value directly from the display. 6 Measurement Procedures

11 C. Two-buffer Calibration 1. Select two buffers. The first should be a ph 7 buffer (or near ph 7), and the second should be near the expected value of the unknown (e.g., ph 4 or ph 10 buffer). 2. Place electrode(s) and thermometer in a ph 7 buffer. 3. Turn the Function Switch to TEMP. 4. Using the TEMP ADJ on the rear panel set the display to the thermometer temperature reading. If greater accuracy is desired use the temperature calibration procedure. 5. Turn the Function Switch to ph. Using CALIB set the display to the buffer value at the temperature being measured. (Check buffer packet or bottle for ph values at solution temperature, or see Table 1.) 6. Remove electrode(s) from the first buffer and rinse with distilled water. 7. Place electrode(s) in the second buffer solution. 8. Turn % SLOPE until ph value of second buffer at the temperature being measured is displayed. 9. Remove electrode(s) and rinse with distilled water. 10. Place electrode(s) in unknown sample. After reading stabilizes, read ph value. Temperature Measurement A. Temperature Calibration at Two Temperatures Follow the procedure below for determinations where maximum temperature accuracy is desired. 1. The calibration standards must bracket the sample temperature range. To accomplish this, select an aqueous solution and pour it into two beakers. Bring the first solution to 50 C. Bring the second solution to a temperature that will, with the 50 C solution, bracket the expected sample temperatures. For example, use a second temperature of 25 C to temperature standardize for a sample at 35 C. 2. Place electrode(s) into the 50 C solution to a depth of at least 5 cm, and thermometer to its immersion line. 3. Turn the Function Switch to TEMP. Using TEMP ADJ on the rear panel, set the display to the thermometer temperature reading. 4. Place the electrode into the second solution. Measurement Procedures 7

12 5. Place thermometer into the second solution. After the reading stabilizes use a small screwdriver to adjust TEMP SLOPE on the rear panel until the display reads the second solution s temperature. 6. Place electrode(s) and thermometer back in the 50 C solution, repeat steps 3, 4, and 5 if necessary. 7. Place electrode(s) in a solution whose temperature is near the expected sample temperature. Use TEMP ADJ to set the display to solution temperature. This will minimize temperature errors at the sample measuring temperature. If unable to perform calibration at two temperatures, see Checkout Procedure. Table 1 ph Values of Buffers at Various Temperatures NIST Buffer, Nominal Value At 25 ºC Temperature * ºC ºC ºC ºC ºC ºC ºC ºC ºC ºC ºC * Non NIST Phosphate Buffer 8 Measurement Procedures

13 B. Use of ph Electrode as a Thermometer To obtain temperature readings using a ph electrode as a thermometer with the Model Calibrate the meter for temperature reading. See Single buffer Calibration, steps 3 and 4, or Temperature Calibration at Two Temperatures for maximum accuracy. 2. During measurement, with the ph electrode in solution, turn the Function Switch to TEMP and read temperature on the display. Dissolved Oxygen Measurement Dissolved oxygen measurements are displayed in ppm O 2 when Thermo Orion Model Dissolved Oxygen Electrode is used with the Model 611 Meter. Follow these instructions for preparing the meter and calibrating the electrode. 1. Connect the BNC connector of the Model to the O 2 input on the rear panel. 2. Turn the Function Switch to O Display should read 7.00 ± Turn the mode switch on the electrode to BT CK. Good battery operation is indicated by a reading of or greater on the meter. 5. Turn the mode switch on the electrode to ZERO. Use the zero calibration control to set the meter to read Insert the reservoir (funnel) into a BOD sample bottle containing enough water to just cover the bottom of the bottle. Insert the electrode, making sure that the electrode tip is not immersed in the water and does not have water droplets clinging to the outside of the membrane. Let stand approximately 30 minutes to ensure water saturation of air in BOD bottle. This bottle should also be used for storage between measurements. 7. Turn the electrode mode switch to the AIR position. If measurements are being made at sea level, use the AIR calibration control to set the ph meter reading to the prevailing barometric pressure in mm Hg (divided by 100). If the barometric pressure is unknown, if the elevation is above sea level, or, if the sample has a salinity greater than 2 parts per thousand, consult Table 1 found in the Model Instruction Manual to obtain the correct AIR setting. 8. Turn electrode mode switch to H 2 O for sample analysis. Measurement Procedures 9

14 Potentiometric Titrations Potentiometric titrations can be performed using redox electrodes. Directions for titrations using redox electrodes appear in the Thermo Orion Redox Electrode Instruction Manual or in standard analytical chemistry texts. Plot the curve of millivolts of titrant added against observed millivolt readings using standard coordinate graph paper. The point of inflection on the curve is the endpoint. Calculate the normality of the unknown. Polarized Electrode Titrations A 10 microampere polarizing current is available for Karl Fischer or other titrations where polarized platinum electrodes are used: 1. With the Function Switch on mv, connect the accessory shorting strap (Thermo Orion Cat. No ), between INPUT (ph), and one Karl Fischer input jack KF. See Figure Connect one of the platinum electrode jacks to REF (ph) on the rear panel 3. Connect the second platinum electrode jack to the second KF input jack. 4. Place electrodes in the sample solution and perform the titration. 10 Measurement Procedures

15 Chapter V Use with Strip Chart Recorders The black and red rear panel binding posts provide an output for strip chart recorders. For recorders with input impedance of at least 1 megohm, the recorder output is adjustable to ± 100 mv for a full-scale display of ± 1999 mv Set Up 1. Connect the lead from the negative side of the recorder to the black binding post and the lead from the positive to the red binding post. 2. Proceed according to the instructions in the strip chart recorder instruction manual. If the strip chart recorder is a fixed-input type, use REC ADJ on the rear panel of the Model 611 to adjust the full-scale to conform to that of the recorder. Use with Strip Chart Recorders 11

16 Chapter VI Instrument Warranty The Thermo Orion warranty covers failures due to manufacturer s workmanship or material defects from the date of purchase by the user. User should return the warranty card to Thermo Orion and retain proof of purchase. Warranty is void if product has been abused, misused, or repairs attempted by unauthorized persons. Warranties herein are for product sold/installed by Thermo Orion or its authorized dealers. Any product sold by a U.S. or Canadian distributor must be returned to Thermo Orion for any warranty work. A Return Authorization Number must be obtained from Thermo Orion Laboratory Technical Service before returning any product for in-warranty repair or replacement. In the event of failure within the warranty period, Thermo Orion will at Thermo Orion s option, repair or replace product not conforming to this warranty. There may be additional charges, including freight, for warranty service performed in some countries. For service, call Thermo Orion (or its authorized dealer outside the United States and Canada). Thermo Orion reserves the right to ask for proof of purchase, such as the original invoice or packing slip. Laboratory ph Meters (Models 611 and 301), SensorLink, PerpHecT ph/ise Meters, phuture ph Meters (Models 610 and 620), Sage Pumps, Cahn Balances, 930 Ionalyzer, 950 ROSS FAST QC Titrator, 960 Titrator PLUS, Karl Fischer Titrators, Autosamplers, Liquid Handling Devices, phuture Conversion Box, Wine Master, 607 Switchbox, rf link, AQUAfast II Colorimeters, Vacuum Degasser, Flowmeter are warranted to be free from defects in material and workmanship for a period of twelve (12) months from the date of purchase by the user or eighteen (18) months from date of shipment from Thermo Orion, whichever is earlier, provided use is in accordance with the operating limitations and maintenance procedures in the instruction manual and when not having been subjected to accident, alteration, misuse, or abuse. The warranty period for 960 Titrator PLUS, 950 Fast QC Titrator, Wine Master and 930 Ionalyzer pumps is three (3) months from date of purchase. Economy Line Electrodes, Models 91-05, 91-06, 91-15, 91-16, 91-25, 91-26, 91-35, 91-36, 92-06, are warranted to be free from defects in material and workmanship for a period of three (3) months from date of purchase by customer or six (6) months from date of shipment from Thermo Orion, whichever is earlier. Warranty also includes failure for any reason (excluding breakage), except abuse, provided the electrode is not used in solutions containing silver, sulfide, perchlorate, or hydrofluoric acid; or in solutions more than one (1) Molar in strong acid or base at temperatures above 50 C. 12 Instrument Warranty

17 Ion Selective Electrodes, ionplus Electrodes, ROSS Electrodes, Sure-Flow Electrodes, PerpHecT Electrodes, AquaPro Professional Electrodes, Standard Line ph Electrodes, Tris ph Electrodes, ORP Triode (Cat. No. 9180BN), phuture ph Probes (Cat. No ) and phuture MMS Quatrode and Triode (Cat. Nos and ), Model DO Probe, Series 100 Conventional Conductivity Cells, temperature probes and compensators (except those models noted) are warranted to be free from defects in material and workmanship for a period of twelve (12) months from the date of purchase by the customer or eighteen (18) months from date of shipment from Thermo Orion, whichever is earlier, except for abuse or breakage of electrodes. 93 and 97 ionplus Series sensing modules are warranted to give six (6) months of operation if placed in service before the date indicated on the package, except and Nitrate modules are warranted to give ninety (90) days of operation if placed in service before the date indicated on the package. Thermo Orion phuture (Cat. No ) and phuture MMS Pentrode (Cat. No ), Quatrode (Cat. No ) and Triode (Cat. No ), Low Maintenance Triode (Cat. No. 9107BN), ORP Low Maintenance Triode (Cat. No. 9179BN), and PerpHecT Low Maintenance Triode (Cat. No. 9207BN), Waterproof Triode (Cat. No. 9107WP, 9107WL, 9109WL, 9109WP), QuiKcheK Meters, Electrodes are warranted to be free from defects in material and workmanship for a period of six (6) months from date of purchase by the customer or twelve (12) months from date of shipment from Thermo Orion, whichever is earlier when used in accordance with the operating limitations and maintenance procedure in the instruction manual and when not having been subjected to accident, alteration, misuse or abuse. Series 100 DuraProbe Conductivity Cells and Series 800 Dissolved Oxygen Probes are warranted to be free from defects in material and workmanship for a period of twenty-four (24) months from the date of purchase by the user or thirty (30) months from the date of shipment from Thermo Orion, whichever is earlier, provided use is in accordance with the operating limitations and maintenance procedures in the instruction manual and when not having been subjected to accident, alteration, misuse, or abuse. Waterproof meters (Models 630, 635, 830A, 835A, 260A, 261S, 265A, 266S, 130A, 131S, 135A, 136S, 1230, 142 and 842), Conductivity meters (Models 105Aplus, 115Aplus, 125Aplus, 145Aplus, 150Aplus and 162A), phuture MMS meters (Models 535A, 555A), ph/conductivity meter (Model 550A), Dissolved Oxygen meters (Models 810Aplus, 850Aplus and 862A), are warranted to be free from defects in material and workmanship for a period of thirty-six (36) months from the date of purchase by the user or forty-two (42) months from date of shipment from Thermo Orion, whichever is earlier, provided use is in accordance with the operating limitations and maintenance procedures in the instruction manual and when not having been subjected to accident, alteration, misuse or abuse. Instrument Warranty 13

18 LabConnect and DataCOLLECT carry an out-of-box warranty. Should they fail to work when first used, contact Thermo Orion immediately for replacement. Thermo Orion Meter, Electrode, Analytical System Accessories, Solutions, AQUAfast Test Strips, AQUAfast II Reagent Kits and accessories, Series 800 Dissolved Oxygen Probe Membranes and Cahn Balance Accessories such as cables, printers, and line adapters carry an out-of-box warranty. Should they fail to work when first used, contact Thermo Orion immediately for replacement. Should Thermo Orion Solutions or Buffers be unusable when first out-of-box, contact Thermo Orion immediately for replacement. THE WARRANTIES DESCRIBED ABOVE ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES WHETHER STATUTORY, EXPRESS OR IMPLIED INCLUDING, BUT NO LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE AND ALL WARRANTIES ARISING FROM THE COURSE OF DEALING OR USAGE OF TRADE. THE BUYER S SOLE AND EXCLUSIVE REMEDY IS FOR REPAIR OR REPLACEMENT OF THE NON-CONFORMING PRODUCT OR PART THEREOF, OR REFUND OF THE PURCHASE PRICE, BUT IN NO EVENT SHALL THERMO ORION (ITS CONTRACTORS AND SUPPLIERS OF ANY TIER) BE LIABLE TO THE BUYER OR ANY PERSON FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES WHETHER THE CLAIMS ARE BASED IN CONTRACT, IN TORT (INCLUDING NEGLIGENCE), OR OTHERWISE WITH RESPECT TO OR ARISING OUT OF THE PRODUCT FURNISHED HEREUNDER. REPRESENTATION AND WARRANTIES MADE BY ANY PERSON, INCLUDING ITS AUTHORIZED DEALERS, REPRESENTATIVES AND EMPLOYEES OF THERMO ORION WHICH ALTER OR ARE IN ADDITION TO THE TERMS OF THIS WARRANTY SHALL NOT BE BINDING UPON THERMO ORION UNLESS IN WRITING AND SIGNED BY ONE OF ITS OFFICERS. Note: For in- or out-of-warranty repair or service, contact Thermo Orion Technical Service (or its authorized dealer outside the United States and Canada). Technical Service will issue a Return Authorization (RA) for all repair services. You must have an Thermo Orion RA prior to returning/forwarding any product to Thermo Orion. 14 Instrument Warranty

19 Chapter VII Repair and Service A Return Authorization Number must be obtained from Thermo Orion Laboratory Technical Service before returning any product for in-warranty or out-of-warranty repair, replacement or credit. In the United States and Canada call In Europe, the Middle East, and Africa contact your local authorized Thermo Orion dealer. Elsewhere, contact your authorized Thermo Orion dealer or: Thermo Orion 500 Cummings Center Beverly, MA USA Tel: Dom. Fax: Int l. Fax: Thermo Orion Europe Sedgeway Business Park Witchford, Cambridgeshire England, CB6 2HY Tel: Fax: Thermo Orion Far East Room 904, Federal Building 369 Lockhart Road Wanchai, Hong Kong Tel: Fax: Thermo Orion Customer Support Toll Free: Dom. domcs1@thermoorion.com Int l. intcs1@thermoorion.com Repair and Service 15

20 Chapter VIII Notice of Compliance WARNING: This meter may radiate radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer s instructions, may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interferers In a commercial environment. Operation of the meter in a residential area may cause interference in which case the user, at his own expense, will be required to take whatever measures may be required to correct the interference. This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. Le present appareil numerique n emet pas de bruits radioelectriques depassant les limites applicables aux appareils numeriques de la class A prescrites dans le Reglement sur le brouillage radioelectrique edicte par le ministere des Communications du Canada. 16 Notice of Compliance

21 Chapter IX Ordering Information Cat. No. Description ph Electrode Storage Solution, 475 ml bottle ph 4.01 Buffer, color-coded, 475 ml bottle ph 7.00 Buffer, color-coded, 475 ml bottle ph Buffer, color-coded, 475 ml bottle Cat. No. Description Electrode holder Swing arm electrode holder Shorting strap for Karl Fischer titrations US electrode to BNC meter adaptor A02 Tilt base Model Dissolved Oxygen Electrode 9678BN Model Combination Platinum Redox Electrode, epoxy body 9778BN Model Combination Platinum Redox Electrode, glass body 8175BN SURE-FLOW Semi-Micro Electrode, Epoxy Body Ordering Information 17

22 Chapter X Specifications Front Panel Controls Mode Switch ph Calibration Control (approx. ± 100 mv) Slope Control (80-105% theoretical) ph Range 0.00 to with ph 7 isopotential point Relative ph Accuracy ± 0.01 ph over any 3 ph units span between buffer points Millivolt Range ± 1999 mv Milllvolt Relative Accuracy ± 1.0 mv or 0.2% of reading, whichever is greater Temperature Measuring Range to C Temperature Accuracy ± 1 C between 0 and 100 C ± 0.5 C between 10 and 60 C (typical accuracy using commercially available laboratory type combination and half cell ph electrodes standardized at room temperature) Dissolved Oxygen Range 0.00 to ppm Dissolved Oxygen Accuracy Determined by oxygen electrodes (see Model Dissolved Oxygen Electrode Instruction Manual for specifications) Rear Panel Outputs - 10µA polarizing current for Karl Fischer titrations; strip chart recorder output mv ( ± 2000 mv) span for full scale reading Rear Panel Controls Test Switch: Allows correct meter performance to be assessed and ph electrode resistance to be estimated Temperature Calibration: For standardizing meter with respect to temperature ph Electrodes Accepted Most glass types with ph 7 isopotential and BNC input connectors having room temperature resistance in the range of megohms 18 Specifications

23 ph Temperature Compensation Automatic at all times without the use of a thermocompensator when meter is in the ph operating mode Display 1.5 cm high LED Power Requirement 100/115/220/240 V ( ± 10%), 50/60 Hz, 16 watts Case 9 cm high x 33 cm wide x 18 cm deep, 5 kg; steel painted with scratch and chemical resistant paint Accessories Electrode holder, electrode support rod, BNC shorting cap, instruction manual, meter support rod Specification subject to change without notice. Log R Compensation, U.S. patent no 4,321,544 Specifications 19

24 20

25 Thermo Orion 500 Cummings Center Beverly, MA USA Tel: Dom. Fax: Int l. Fax: Thermo Orion Europe Sedgeway Business Park Witchford, Cambridgeshire England, CB6 2HY Tel: Fax: Thermo Orion Far East Room 904, Federal Building 369 Lockhart Road Wanchai, Hong Kong Tel: Fax: Thermo Orion Customer Support Toll Free: Dom. Int l. A Thermo Electron business Rev. D

26 AQUAfast, Cahn, EZFlash, Ionalyzer, ionplus, KNIpHE, ORION, perphect, PerpHecT, PerpHecTion, phisa, phix, phuture, Pure Water, Sage, Sensing the Future, SensorLink, Sure-Flow, Titrator PLUS, TURBO2 and Wine Master are registered trademarks of Thermo Orion pHAX-ION, A +, All in One, Aplus, AQUAsnap, AssuredAccuracy, AUTO-BAR, AUTOCAL, AUTO DISPENSER, Auto-ID, AUTO-LOG, AUTO-STIR, AUTO-READ, BOD AutoEZ, Cable-Free, CERTI-CAL, CISA, DataCOLLECT, DataPLUS, digital LogR, DirectCal, DuraProbe, Environmental Product Authority, Extra Easy/Extra Value, FAST QC, Flash GC, GAP, GLPcal, GLPcheck, GLPdoc, KAP, LabConnect, LogR, Minimum Stir Requirement, MSR, NISS, One-Touch, One-Touch Calibration, One-Touch Measurement, Optimum Results, Pentrode, phuture MMS, phuture Pentrode, phuture Quatrode, phuture Triode, Quatrode, QuiKcheK, rf link, ROSS, ROSS Resolution, SAOB, Stacked, Stat Face, The Enhanced Lab, ThermaSense, Triode, TRIUMpH, Unbreakable ph, Universal Access are trademarks of Thermo Orion. Guaranteed Success and The Technical Edge are service marks of Thermo Orion. PerpHecT meters are protected by U.S. patent 4,321,544. ROSS and PerpHecT ROSS are protected by U.S. patent 4,495,050. ORION Series A meters and 900A printer are protected by U.S. patents 5,108,578, 5,198,093, D334,208 and D346,753. ORION 81, 82, 91, and 92 series glass electrodes are protected by U.S. patents 4,661,236 and 4,687,500. Sure-Flow electrodes are protected by European Patent 278,979 and Canadian Patent 1,286,720. ionplus electrodes and Optimum Results solutions have patents pending. Copyright 2001, Thermo Orion. All rights reserved. The specifications, descriptions, drawings, ordering information and part numbers within this document are subject to change without notice. This publication supersedes all previous publications on this subject.