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Summary of Contents for EUTECH INSTRUMENTS ALPHA PH 500 PHORP 2-WIRE TRANSMITTER (REVISION 2)
- Page 1 Instruction Manual pH 500 LCD Transmitter pH/ORP Transmitter with Display 68X216829 Rev 2 05/04 Technology Made Easy ...
- Page 2 Authorized Distributor. Eutech Instruments / Oakton Instruments will not accept any responsibility for damage or malfunction to the transmitter caused by improper use of the instrument. Remember to fill in the guarantee card and mail it back to your authorized distributor.
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Page 3: Table Of Contents
TABLE OF CONTENTS INTRODUCTION PREPARATION Power Supply Requirements (SL2 Position) Connecting the Electrode and Temperature Probe (SL1 Position) INSTALLATION Wall Mount Panel Mount DISPLAY AND KEYPAD FUNCTIONS Display Keypad CALIBRATION Preparing the Transmitter for Calibration pH Calibration Relative mV Calibration Temperature Calibration ADVANCED SETUP FUNCTIONS Offset Setting (Unavailable in ORP mode) -
Page 4: Introduction
Instruction Manual pH 500 INTRODUCTION Thank you for selecting a pH 500 pH/ORP Transmitter. This transmitter is a microprocessor-based instrument that is designed to be sturdy and user-friendly. It is capable of measuring pH, mV and temperature. This transmitter has many user-friendly features – all of which are completely accessible through the water-resistant membrane keypad. -
Page 5: Preparation
Instruction Manual pH 500 PREPARATION Remove screws from the four corners at the back of the Transmitter, and remove back cover. Connectors should be exposed as follows: Figure 1 – Connection Guide All wiring is done on 2 detachable connectors: – 9-pin connector (located on SL1 position) for pH electrode, temperature sensor and potential matching pin (PMP);... -
Page 6: Power Supply Requirements (Sl2 Position)
Instruction Manual pH 500 Power Supply Requirements (SL2 Position) This transmitter requires a 12 to 24V DC power supply. Other Transmitters and/or a chart recorder may be connected in series. Insert positive loop wire from power supply to pin 1, tighten screw. Insert negative loop wire to pin 2, tighten screw. - Page 7 Instruction Manual pH 500 2.2.2 To connect temperature probe: For Automatic Temperature Compensated (ATC) pH readings, a 100Ω Pt RTD temperature probes can be used. Industrial pH electrodes are often offered with ATC, which will typically be bare wires. 3-wire probe Insert Pt 100 sense wire to pin 5 of connector.
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Page 8: Installation
Instruction Manual pH 500 INSTALLATION Wall Mount - 5 -... -
Page 9: Panel Mount
Instruction Manual pH 500 Panel Mount 1. Prepare panel cut-out of 92.0 mm by 92.0 mm Panel (side) 2. Remove back cover of transmitter and slide it through panel cut-out 4. Thread rods through lugs until transmitter is held in place against panel 3. -
Page 10: Display And Keypad Functions
Instruction Manual pH 500 DISPLAY AND KEYPAD FUNCTIONS Display The LCD has a primary and secondary display. • The primary display shows the measured pH, mV or Relative mV value. • The secondary display shows the measured temperature. In Calibration mode, pH buffer values are displayed here;... -
Page 11: Keypad
Instruction Manual pH 500 Keypad The four-button keypad allows easy and quick operations of the Transmitter. Function Brings you directly into the Calibration mode. If you were in pH Measurement mode, press CAL to enter pH Calibration mode. If you were in mV Measurement mode, press CAL to enter mV Calibration mode. -
Page 12: Calibration
Instruction Manual pH 500 CALIBRATION Preparing the Transmitter for Calibration Before starting calibration, make sure you are in the correct measurement mode. When you switch on the transmitter, the transmitter starts up in the units last used. For example, if you shut the transmitter off in “mV” units, the transmitter will read “mV”... -
Page 13: Ph Calibration
Instruction Manual pH 500 pH Calibration A complete 2-point CAL is required for this Transmitter. If Calibration is aborted after 1st calibration point, transmitter reverts to previous Calibration data. Rinse probe thoroughly with de-ionized water or a rinse solution. Blot excess liquid. READY HOLD Dip probe into calibration buffer. -
Page 14: Relative Mv Calibration
Instruction Manual pH 500 Relative mV Calibration From the ORP MEAS mode, press CAL key. R.mV CAL indicator appears at top of LCD. Primary READY HOLD display shows relative reading secondary display shows absolute mV value. NOTE: If you have never calibrated relative mV or if the transmitter has been reset, the value shown in the primary display is the same as the R.mV... -
Page 15: Advanced Setup Functions
Instruction Manual pH 500 ADVANCED SETUP FUNCTIONS The advanced setup mode lets you customize your transmitter’s preferences and defaults. This transmitter features different sub groups that organize all setup parameters. The sub-groups are: Offset Setting (Unavailable in ORP mode) As a result of the continuous measurement and the application concerned, it may not be convenient to remove the electrode for calibration. -
Page 16: Output Range Setting
Instruction Manual pH 500 Output Range Setting Output of pH 500 transmitter is via the 2-wire power supply SETUP loop. Both the 4 mA and 20 mA output can be assigned to HOLD specific pH or ORP values, for a more refined output. Press ENT key and use ▲... -
Page 17: Temperature Compensation Setting (Unavailable In Orp Mode)
Instruction Manual pH 500 Temperature Compensation Setting (Unavailable in ORP mode) pH values other than pH 7.00 are affected by temperature. Under varying temperature conditions, use ATC to compensate pH values. If temperature of bath is constant, and a temperature probe is not available, Manual Temperature Compensation can be utilized. - Page 18 Instruction Manual pH 500 Press ENT key. Primary display shows ‘ATC’ and secondary display shows ‘On’ or ‘OFF’. Use ▲ or ▼ keys to select ‘ATC Off’. Press ENT. Primary display shows temperature (default is 25.0), and secondary display shows ‘P °C’’. This is the set up page for setting the temperature of your transmitter to the temperature of your process or sample by using an accurate thermometer as reference.
- Page 19 Instruction Manual pH 500 SETUP HOLD SETUP SETUP HOLD HOLD SETUP SETUP HOLD HOLD °C SETUP HOLD Temperature Compensation Setting Chart – alpha pH 500 Transmitter - 16 -...
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Page 20: Hold Current Setting
Instruction Manual pH 500 HOLD Current Setting When Transmitter is in CAL or SETUP modes, it automatically SETUP goes into a ‘HOLD’ mode. HOLD To indicate Transmitter is in ‘HOLD’ mode, output current can be set to 22 mA output by activating the ‘HLD On’. Press ENT key and use ▲... -
Page 21: Configuration
Instruction Manual pH 500 Configuration 6.6.1 Selecting pH or ORP Mode of Operation The alpha pH 500 transmitter is not only a pH transmitter, but SETUP also an ORP transmitter. When configured to measure ORP, HOLD electrode must be changed and calibrated (see Section 5.3 for calibration procedure). - Page 22 Instruction Manual pH 500 LCD displays ‘ ’ (asymmetrical operation). Use ▲ or ▼ keys to select for ‘ ’ (symmetrical mode of operation). Press ENT key again. Press keys together, to return to MEAS mode. - 19 -...
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Page 23: Probe Care And Maintenance
Instruction Manual pH 500 PROBE CARE AND MAINTENANCE Since your pH electrode is susceptible to dirt and contamination, clean it every one to three months depending on the extent and condition of use. NOTE: For specialty electrode care, consult the instruction manual included with your electrode. - Page 24 Instruction Manual pH 500 Reactivating the pH electrode If stored and cleaned properly, your pH electrode should be ready for immediate use. However, a dehydrated bulb may cause sluggish response. To rehydrate the bulb, immerse electrode in a pH 4 buffer solution for 10 to 30 minutes. If this fails, the electrode requires activation.
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Page 25: Trouble Shooting Guide
Instruction Manual pH 500 TROUBLE SHOOTING GUIDE Problem Cause Solution Power on but no a). Loose connections a). Check cables are making good display contact. b). Cables not in correct polarity (+ and – position). b). Re-wire loop cables with correct polarity. -
Page 26: Specifications
Instruction Manual pH 500 SPECIFICATIONS SPECIFICATIONS DESCRIPTIONS pH Range 0.00 to 14.00 pH Resolution / Accuracy 0.01 pH / ± 0.01 pH Temperature Range -10.0 to 110.0 °C 0.1 °C / ± 0.5 for °C Resolution / Accuracy Millivolt Range -1000 to +1000 mV 1 mV / ±... -
Page 27: Technical Dimensions
Instruction Manual pH 500 10 TECHNICAL DIMENSIONS - 24 -... -
Page 28: Accessories
Instruction Manual pH 500 11 ACCESSORIES EUTECH INSTRUMENTS Replacement Transmitter and Transmitter accessories Ordering Code No. Item EC-PHCTP0500 Alpha pH/ORP 2-wire LCD Transmitter EC-ARTSO-05B Combination pH electrode with 5m cable EC-ARGTSO-05B Combination pH electrode with PMP and 5m cable EC-100GTSO-05B... - Page 29 Instruction Manual pH 500 OAKTON INSTRUMENTS Replacement Transmitter and Transmitter accessories Ordering Code No. Item 56717-20 pH 500 pH/ORP 2-wire LCD Transmitter with display 35807-20 pH/Temp electrode with PMP and 10-ft cable 35801-21 Platinum ORP electrode with 10-ft cable 05994-90 BNC to spade lug adapter Calibration Solutions Ordering Code No.
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Page 30: Warranty
A restocking charge will be made on all unauthorized returns. NOTE: Eutech Instruments Pte Ltd / Oakton Instruments reserve the right to make improvements in design, construction, and appearance of products without notice. - Page 32 For more information on our products, contact your nearest distributor or visit our website listed below: Oakton Instruments Eutech Instruments Pte Ltd. Distributed by: P.O Box 5136, Blk 55, Ayer Rajah Crescent, Vernon Hills, IL 60061, USA #04-16/24 Singapore 139949...
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