Instruction Manual 24-hour Continuous Field Monitors pH, ORP, and Conductivity 68X254901 Technology Made Easy ... Rev.
Preface This manual serves to explain the use for all models of the Field Monitors for pH, ORP, and Conductivity (each model sold separately). If there are doubts in the use of this meter, please do not hesitate to contact the Authorized Distributor. Eutech Instruments/ Oakton Instruments cannot accept any responsibility for damage or malfunction to the meter caused by improper use of the instrument.
TABLE OF CONTENTS 1 INTRODUCTION..........................................................................................................................................1 2 FRONT PANEL .............................................................................................................................................1 2.1 2.2 2.3 3 KEYS FOR PH MONITOR ............................................................................................................................
1 INTRODUCTION Thank you for purchasing this pH, ORP, or Conductivity Field Monitor. The Field Monitor Series feature microprocessor technology, which gives it many reliable, user-friendly features. These monitors were designed for long-term lowmaintenance use. Just plug in the AC adapter, calibrate and the unit is ready for continuous monitoring. No batteries required.
3 CONNECTING THE PROBE The pH or ORP monitor uses any standard pH or ORP electrode with a BNC connector. The probe for the Conductivity monitor is hard-wired into the unit, no connection is necessary. NOTE: Keep connector dry and clean. Do not touch connector with soiled hands. 3.1 To connect the pH or ORP probe: Slide the BNC connector of the probe over the BNC connector socket on the monitor. Make sure the slots of the connector are in line with the posts of the socket.
4 pH CALIBRATION This section is applicable for the following models: 4.1 • Eutech Instruments: EC-PHFM1ST11 & EC-PHFM1ST21 • Oakton Instruments: 35623-00, and -05 only Important Information on pH Monitor Calibration This monitor has 3 pH calibration points: 4, 7 and 10 with automatic buffer recognition. For best accuracy, calibrate to all 3 pH points close to the temperature of the solution you will be monitoring, starting with pH 7.
4.2 pH Calibration 1. Plug in the pH monitor to turn on. The monitor will be in pH measurement mode. 2. Rinse the probe thoroughly with de-ionized water or a rinse solution. Do not wipe the probe; this causes a build-up of electro-static charge on the glass surface. Immerse pH electrode into buffer solution, for example, pH 7 Press 3. Dip the probe into the calibration buffer pH 7. The end of the probe must be completely immersed into the sample. Stir the probe gently to create a homogeneous sample. 4.
5 ORP CALIBRATION This section is applicable for the following models: 5.1 • Eutech Instruments: EC-ORPFM1ST11 & EC-ORPFM1ST21 • Oakton Instruments: 35649-00 and -05 only Important Information on ORP Monitor Calibration Typically ORP measurements are taken on a relative basis and calibration is not required. This monitor has ±100 mV offset adjustment, adjustable in 5 mV increments. Choose a calibration standard that is close to your working condition.
5.2 ORP Calibration 1. Plug in the ORP monitor to turn on. The monitor will Immerse ORP electrode into a calibration standard solution, be in ORP measurement mode. for example, 255 mV 2. Rinse the probe thoroughly with de-ionized water or a rinse solution. Do not wipe the probe; this causes a build-up of electro-static charge on the surface. Press 3. Dip the probe into the calibration standard. The end of the probe must be completely immersed into the sample.
6 CONDUCTIVITY CALIBRATION This section is applicable for the following models: Description Eutech Instruments Oakton Instruments Conductivity FMCON 1 with Conductivity electrode and 110/120 VAC power adapter. EC-CONFM1ST11 35660-00 Conductivity FMCON 1 with Conductivity electrode and 220/230 VAC power adapter. EC-CONFM1ST21 35660-05 Conductivity FMCON 2 with Conductivity electrode and 110/120 VAC power adapter.
6.2 Conductivity Calibration 1. Plug in the Conductivity monitor to turn on. The monitor will be in conductivity measurement mode. Immerse conductivity electrode 2. Rinse the probe thoroughly with de-ionized water or a rinse solution, then rinse with a small amount of calibration solution. into a standard solution, for example, 4 mS Press 3. Dip the probe into the calibration solution. Immerse the probe tip at least 2 cm into the solution. Stir the probe gently to create a homogeneous sample. 4.
7 MONITORING Once the monitor is calibrated it is ready for monitoring. The monitor has two eyelet holes. Mount the monitor where it can be easily viewed. See figure below. Mounting Eyelets CAL ENTER pH FM1 Continuous Monitor 8 ELECTRODE CARE AND MAINTENANCE Since your pH/ORP electrode is susceptible to dirt and contamination, clean it every one to three months depending on the extent and condition of use. Like batteries, a pH/ORP electrode has limited life.
8.2 pH/ORP electrode cleaning • Salt deposits: Dissolve the deposits by immersing the electrode in tap water for ten to fifteen minutes. Then thoroughly rinse with distilled water. • Oil/Grease film: Wash electrode pH/ORP bulb gently in some detergent and water. Rinse electrode tip with distilled water or use a general-purpose electrode cleaner (see ordering information). • Clogged reference junction: Heat a diluted KCl solution to 60 to 80 C.
10 ERROR MESSAGES pH When pH value is When pH value is Displays when there more than 14.0 pH less than 0.0 pH is an error in calibration. ORP When ORP value is When ORP value is more than 995 mV. less than 0 mV Conductivity When Conductivity When Conductivity Displays when there value is more than value is less than 0 is an error in 10.0 mS. mS. calibration.
11 SPECIFICATIONS SPECIFICATIONS Range Accuracy Resolution Calibration Automatic Buffer Recognition pH ORP Conductivity FM CON1 FM CON2 FM CON3 0.0 to 14.0 pH 0 to 995 mV 0 to 10.0 mS 0.0 to 990 µS 0.0 to 150 µS ± 0.1 pH ± 5 mV ±0.2 mS/cm ±20 µS/cm ±2 µS/cm 0.1 pH 5 mV 0.1 mS/cm 10 µS/cm 1 µS/cm Up to 3 points; pH 4.0, 7.0 & 10.
12 METERS AND ACCESSORIES Meters Item Eutech Instruments Oakton Instruments Ordering Code Ordering Code pH Field Monitor with pH electrode , 1 Strip of 10 pH 7 buffer tablets and 110/120 VAC power adapter. EC-PHFM1ST11 35623-00 pH Field Monitor with pH electrode , 1 Strip of 10 pH 7 buffer tablets and 220/230 VAC power adapter. EC-PHFM1ST21 35623-05 ORP Field Monitor with ORP electrode and 110/120 VAC power adapter.
Calibration Solutions Item Eutech Instruments Oakton Instruments Ordering Code Ordering Code pH 4.01 buffer solution, 480 ml bottle (1 pint) EC-BU-4BT 00654-00 pH 7.00 buffer solution, 480 ml bottle (1 pint) EC-BU-7BT 00654-04 pH 10.01 buffer solution, 480 ml bottle (1 pint) EC-BU-10BT 00654-08 pH 4.01 buffer sachets, 20 ml x 20 pcs. EC-BU-4BS 35653-01 pH 7.00 buffer sachets, 20 ml x 20 pcs. EC-BU-7BS 35653-02 pH 10.01 buffer sachets, 20 ml x 20 pcs. EC-BU-10BS 35653-03 12.
13 WARRANTY The Field Monitor series is supplied with a 1-year warranty from manufacturing defects and electrodes for 6 months from the date of purchase unless otherwise stated. If repair or adjustment is necessary and has not been the result of abuse or misuse within the designated period, please return – freight pre-paid – and correction will be made without charge. Eutech Instruments/ Oakton Instruments will determine if the product problem is due to deviations or customer misuse.
For more information on Eutech Instruments/ Oakton Instruments’ products, contact your nearest distributor or visit our website listed below: Oakton Instruments P.O Box 5136, Vernon Hills, IL 60061, USA Tel: (1) 888-462-5866 Fax: (1) 847-327247-2984 E-mail: info@4oakton.com Web-sites: www.4oakton.com Eutech Instruments Pte Ltd Blk 55, Ayer Rajah Crescent, #04-16/24 Singapore 139949 Tel: (65) 6778 6876 Fax: (65) 6773 0836 E-mail: marketing@eutechinst.com Web-site: www.eutechinst.
