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ROSS and the COIL trade dress are trademarks of Thermo Fisher Scientific Inc. U.S. patent 6,793,787. AQUAfast, Cahn, ionplus, KNIpHE, No Cal, ORION, perpHect, PerpHecT, PerpHecTion, pHISA, pHuture, Pure Water, Sage, Sensing the Future, SensorLink, ROSS, ROSS Ultra, Sure-Flow, Titrator PLUS and TURBO2 are registered trademarks of Thermo Fisher.
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Preface This manual serves to explain the use of the Alpha pH 550 Monitor. The manual functions in two ways, firstly as a step by step guide to help the user operate the instrument. Secondly, it serves as a handy reference guide. This instruction manual is written to cover as many anticipated applications of the Alpha pH 550 Monitor.
Configuration Settings..................28 Viewing Electrode Properties................. 30 TECHNICAL SPECIFICATIONS LIST OF ACCESSORIES Thermo Scientific Order Codes..............33 Eutech Instruments Order Code ..............34 TROUBLESHOOTING GENERAL INFORMATION Warranty......................36 Return of Goods..................... 36 Guidelines for Returning Unit for Repair ............36 Maintenance and Cleaning ................
They will be glad to assist you. Intended Use Alpha pH 550 Monitors are intended solely for pH or ORP and temperature measurement, as described in this instruction manual. Any other use, or use not mentioned here, that is incompatible with the technical specifications is deemed inappropriate.
Remove the unit from the wall. Correct Disposal of the Instrument When the Alpha pH 550 is permanently taken out of service, obey the local environmental regulations for correct disposal or send the instrument to your local distributor, they will take care of proper disposal.
GETTING STARTED Description of Instrument The Alpha pH 550 Monitor is used for measuring pH and temperature values. The pH values can be measured using industrial combination pH sensors. The temperature values can be measured using 3-wire Pt100 / Pt1000 sensors. The...
• A pH sensor with integrated or separate Pt100/Pt1000 temperature sensor • An appropriate measurement cable • An immersion, flow or process assembly Alpha pH 550 Monitor lpha pH550 pH Monitor Power Adaptor (+9 V DC) Housing and Measurement Cable...
Connecting Peripherals 2.3.1 Connection Terminals Remove Back Cover: Remove the screws from the four corners at the back of the pH Monitor. Remove the back cover. The connectors are exposed on the back PCBA as shown in the Figure 1 below. Connectors: •...
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2.3.2 Switching Between PT100 & PT1000 Temperature Sensors The Monitor supports both Pt100 & Pt1000 (2-wire or 3-wire) temperature sensors. The default factory setting is Pt100. If you need to use Pt1000 temperature sensor, you have to change the jumper setting (J7) as described below. Remove Back Cover: Remove screws from the four corners at the back of the pH Controller.
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2.3.3 Connecting pH/ORP Electrode If the pH/ORP electrode has a BNC connector, remove the BNC connector from the cable. NOTE: Oakton Instruments offers an optional ‘BNC to Spade Lug adapter’ (Order code: 05994-90) that can be used with pH/ORP electrode without removing the BNC connector. Strip the insulation of the cable so that the bare wires are exposed enough for connection as shown in Figure 3.
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2.3.4 Connecting Temperature Probe For Automatic Temperature Compensated (ATC) pH readings, a 100Ω Pt RTD temperature probe (2-wire or 3-wire) can be connected to the Controller. 3-Wire Probe: Connect PT100 compensate wire to Pin 5 of J10 connector Connect PT100 sense wire to Pin 6 of J10 connector Connect PT100 GND wire to Pin 7 of J10 connector 2-Wire Probe: Short Pin 5 &...
Installation 2.4.1 Mechanical Dimensions Alpha pH 550 Alpha pH 600 pH Monitor PH/ORP RF Transmitter 2.4.2 Wall Mount Pierce through holes at both sides Cover the catch slots at both sides with overlays - 9 -...
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2.4.3 Panel Mount Prepare panel cut-out of 92.0 mm X 92.0 mm Remove back cover of pH Monitor and slide it through panel cut-out Gasket Panel Panel Insert threaded rods through catch until pH Meter is held against panel Attach catch to both sides of pH Meter - 10 -...
Display & Keypad 2.5.1 Display Overview The Liquid Crystal Display (LCD) of Alpha pH 550 has two alpha-numerical displays (Upper and a Lower). • Upper display: Measured pH, mV or relative mV value are displayed when the Monitor is in normal operation (measurement) mode.
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Mode Indicators Measurement mode; blinks in Symmetric mode MEAS (Refer Section 3.1& 5.5 ) SETUP Setup mode (Refer Section 5) Calibration mode (Refer Section 4) Status Annunciators READY Appears when the reading is stable Appears when Automatic Temperature Compensation (ATC) is enabled.
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2.5.2 Key Functions Alpha pH 600 Alpha pH 550 pH Monitor PH/ORP RF Transmitter Description Enter Calibration mode. Enter Setup mode Access sub screens (parameters) within a group of settings in Setup mode Confirm (save) setup parameters and numerical values Start/Confirm calibration in Calibration mode.
OPERATION Measurement mode When the pH Monitor is powered on, the display shows all the LCD segments briefly, and then automatically enters into the Measurement mode. MEAS READY 7 .00 °C 2 5 . 0 The mode indicator ‘MEAS’ at the top of the display indicates that the pH monitor is in Measurement mode;...
CALIBRATION MODE Preparing the Monitor & Electrode for Calibration Before starting calibration, make sure that the pH Monitor is in appropriate measurement mode (pH or ORP). When the monitor is switched on, it starts up with the measurement mode last used. For example, if the pH Monitor is switched off in ORP measurement mode, it starts up in ORP mode when it is switched on.
NOTES: • To exit calibration mode at any time during calibration, press ▲ and ▼ keys simultaneously (escape). The pH Monitor returns to the measurement mode and the old calibration values remain active • The calibration is always carried out in the units of measurement (pH or mV), selected in setup mode pH Calibration The pH Monitor is capable of calibration of up to 2 points using USA or NIST pH...
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Upper display shows the current uncalibrated pH reading. Allow the reading to stabilize. LCD shows ‘READY’ annunciator when the reading is stable. Press CAL key to confirm the reading. The calibration is completed. The pH Monitor re-calculates electrode properties based on the calibration. The new slope (in mV) is shown in the upper display and pH reading at 0mV (pH7.00 ±...
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Press ENT key to confirm the reading. The pH Monitor moves to the second calibration point. The lower display shows next standard buffer value (pH 4.01). Use ▲ and ▼ keys to select your second buffer from one of the preset values: pH 4.01 or 1.68 or 10.01 or 12.45.
1-Point Calibration: MEAS READY READY HOLD HOLD HOLD °C From pH measurement mode press CAL key to enter calibration mode as described in section 4.2. The LCD shows ‘CAL PH’. Press ENT key to begin calibration. Place the electrode in pH 6.86 buffer. Immerse the temperature probe in the buffer solution if ATC mode is enabled.
From pH measurement mode press CAL key to enter calibration mode as described in section 4.2. The LCD shows ‘CAL PH’. Press ENT key to begin first calibration point. Place the electrode in pH 6.86 buffer. Immerse the temperature probe in the buffer solution if ATC mode is enabled.
MEAS R.mV READY READY READY HOLD HOLD HOLD °C From ORP measurement mode press CAL key to enter calibration mode as described in section 4.2. The LCD shows ‘CAL OrP’. Press ENT key to begin calibration. Place the electrode in a standard ORP solution of known OPR value. Immerse the temperature probe in the buffer solution if ATC mode is enabled.
SETUP MODE Enter Setup mode The setup mode allows you to customize the settings of the pH Monitor to suite your requirements. While in measurement mode, press the ENT key to access setup mode. LCD shows ‘SETUP’ mode indicator and the first page of setup (OFS – offset settings).
Electrode Offset Settings NOTE: ‘Electrode Offset Setting’ is not available when the pH Monitor is configured for ORP measurement mode. (Refer Section 5.5 for switching measurement modes) In applications where continuous pH measurement is required, it may not be convenient to remove the electrode for calibration. In such cases, an on-line offset adjustment is recommended.
allowed. Press ENT key to confirm the value. The pH Monitor reverts to OFS screen. Press ▲ or ▼ key to access other setup screens or press ▲ and ▼ key simultaneously (escape) to return to measurement mode. Temperature Settings Automatic Temperature Compensation (ATC): The pH values other than pH 7.00 are affected by temperature.
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Selecting unit of measurement for temperature: The upper display shows ‘Unit’ and the lower display shows the last configured unit of measurement for temperature. Press ▲ or ▼ key to select the desired units for temperature (ºC or ºF). Press ENT key to confirm your selection. Enable/disable ATC: The lower display shows ‘AtC’...
Press ▲ or ▼ key to access other setup screens or press ▲ and ▼ key simultaneously (escape) to return to measurement mode. To exit from any intermediate steps, press ▲ and ▼ keys simultaneously (escape). The pH Monitor returns to the first screen of temperature settings SET ºCF.
Press ENT key to confirm your selection. The pH Monitor reverts to bUFF screen. Press ▲ or ▼ key to access other setup screens or press ▲ and ▼ key simultaneously (escape) to return to measurement mode. Configuration Settings Configuration settings let you configure the pH Monitor to different measurement & operation modes &...
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SETUP SETUP SETUP SETUP SETUP SETUP SETUP SETUP MEAS READY °C From pH (or ORP) measurement mode press ENT key to enter setup mode as described in section 5.1. The LCD shows the first screen of setup mode (OFS). Press ▲ or ▼ key to select configuration settings screen (Cnfg).
CAL dEF: Reset all calibration settings of the pH Monitor to factory defaults, when confirmed by pressing ENT key. Press ENT key to confirm your selection. - If ‘nO dEF’ was selected, the pH Monitor reverts to Cnfg screen. Press ▲ or ▼ key to access other setup screens or press ▲...
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From pH (or ORP) measurement mode press ENT key to enter setup mode as described in section 5.1. The LCD shows the first screen of setup mode (OFS). Press ▲ or ▼ key to select viewing electrode properties screen (CdAt). Press ENT key to view electrode properties (CdAt).
TECHNICAL SPECIFICATIONS General Specification (a) pH Measuring Range 0.00 to 14.00 pH Resolution 0.01 pH Accuracy ± 0.01 pH (b) mV Measuring Range -1000 to 1000 mV Resolution 1 mV Accuracy ± 1 mV (c) Temperature Measuring range -10.0 to +125.0 C or +14.0 to +257 Resolution F (Resolution is 0.1...
LIST OF ACCESSORIES Thermo Scientific Order Codes pH Monitor Replacement and Accessories Item Description Order Code Alpha pH 550 Monitor TSPHCP0550 Combination pH electrode with 5m cable EC-ARTSO-05B Combination pH electrode with PMP and 5m cable EC-ARGTSO-05B Combination pH electrode with PT 100, PMP and 5m cable...
TROUBLESHOOTING Problem Cause Solution Power on, but no display Loose connections Ensure cables make good contact Incorrect output voltage of the power adaptor Use an power adaptor with specified output voltage Unstable pH reading Dirty electrode Clean electrode and recalibrate Electrical noise interference Switch to Symmetric mode...
GENERAL INFORMATION Warranty This monitor is supplied with a one-year warranty against significant deviations in material and workmanship from date of purchase and a six-month warranty for probe. Each instrument will have a warranty card with a specific serial number. The warranty card must be endorsed by the Authorized Distributor at the point of sale.
Customer Service Dept., if possible. Maintenance and Cleaning Maintenance The Alpha pH 550 Monitor contains no user repairable components. Please contact your authorized distributor if there is any problem with the unit. Cleaning To remove dust, dirt and spots, the external surfaces of the pH Monitor may be wiped with a damp, lint-free cloth.
10 APPENDICES 10.1 Appendix 1 – pH Buffer Values at Various Temperatures The following table shows the various pH values at different temperature of the solution during calibration. Temperature pH 4.01 pH 6.86 pH 7.00 pH 9.18 pH 10.01 4.01 6.98 7.12 9.47...
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CnFg Configuration Default values Factory (defaults) Offset Reading is over range Oxidation Reduction Potential P.ºC Process temperature Setting Symmetrical mode Type Reading is under range - 39 -...
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Water Analysis Instruments North America 166 Cummings Center Beverly, MA 01915 USA Toll Free: 1-800-225-1480 Tel: 1-978-232-6000 Dom. Fax: 1-978-232-6015 Int’l Fax: 978-232-6031 Europe P.O. Box 254, 3860 AG Nijkerk Wallerstraat 125K, 3862 CN Nijkerk, Netherlands Tel: (31) 033-2463887 Fax: (31) 033-2460832 Asia Pacific Blk 55, Ayer Rajah Crescent #04-16/24, Singapore 139949...