User manual EUTECH INSTRUMENTS ALPHA PH 2000D DIFFERENTIAL PH CONTROLLER

[. . . ] Alpha DO 2000 PPG Processor/Transmitter Dissolved Oxygen ( ppm / m/L / % ) Preface This manual serves to explain the use of the Alpha-pH2000D series pH/ORP controller/transmitter. The manual functions in two ways, firstly as a step by step guide to help the user operate the instrument. This instruction manual is written to cover as many anticipated applications of the Alpha-pH2000D pH/ORP controller/transmitter. If you have doubts in the use of the instrument, please do not hesitate to contact the nearest Alpha Authorised Distributor. [. . . ] The electrode and "CAL" indicator flashes and the controller adjust its display to the 20% relative value and exits to the Measurement mode. Note: If there is a calibration error, the controller displays "CAL ERR". If this happens, push both or keys (escape) to restart the calibration beginning from Step 1. Note: If you stop calibration after entering the first value, or if calibration is defective, the controller will use its original calibration data. - 14 - 5. 5 View actual zero and slope MEAS PH O C ATC CAL ENT CAL ENT pH 1. Press the ENT key. The display shows the slope in mV (upper value) and the pH reading at 0 mV (zero point, lower value). Note: If no key is pressed for 30 seconds the transmitter automatically returns to the Measurement mode. Press the ENT key to return to the Measurement mode. - 15 - 6 Setup Mode 6. 1 Enter Setup mode In the Setup mode the transmitter can be configured to your individual requirements. 1. MEAS While in Measurement mode press the ENT key. pH 2. The display prompts you to enter the security code. Set the security code with or key to: - "SCD 22" if you want to change parameter settings O C ENT ER ENT - "SCD 000" if you want to view only parameter settings (view only mode) 3. ENT ER ENT Press the ENT key. SETUP HOLD ENT ER ENT SE TUP HOL D ENT ER ENT Temperature settings see section 6. 3 SETUP HOLD ENT ER ENT Relay A (set point 1) settings see section 6. 4 SETUP HOLD ENT ER ENT Relay B (set point 2) settings see section 6. 4 SETUP HOLD ENT ER ENT Controller settings see section 6. 5 SE TUP HOLD ENT ER ENT Current output 1 settings see section 6. 6 SETUP HOLD ENT ER ENT Current output 2 settings see section 6. 7 SETUP HOLD ENT ER ENT Wash contact settings see section 6. 8 SETUP HOLD ENT ER ENT Unit settings see section 6. 9 SETUP HOLD ENT ER ENT Calibration see section 5 Note: Note: to exit Setup mode at any time press the and key simultaneously (escape). The transmitter returns to the Measurement mode. - 16 - 6. 2 Electrode Offset (OFS) sub-function The electrode offset sub-function is only available if the transmitter is configured for pH measuring. Use this sub-function to set an offset that corrects the readings without removing the electrode from the control system. The transmitter will add or subtract the offset value from the measuring pH and display the corrected value. However, if you need to offset the value beyond the average offset you would expect in your application type, consider a full calibration or even electrode replacement. Record the controller's pH reading at the time you take the sample. Measure the pH value of your sample using a calibrated pH tester, hand-held meter, or bench meter. Select the "OFS" sub-function, and then press the ENT key. SETUP HOLD SETUP HOLD PH PH 4. The display shows the current measured pH value (lower section of the display) and the current offset value (upper section of the display). As the and keys are being pressed to adjust the pH value, the offset value also changes. Continue with additional Setup procedures, or return to the Measurement mode by pressing the and keys (escape) simultaneously. Note: The offset sub-function is blanked out during ORP operation. 5. - 17 - 6. 3 Setting temperature (Set °C°F) sub-function 1 SETUP HOLD 3 SETUP 4 ENT SETUP HOLD 5 ENT SETUP HOLD ENT ENT SETUP HOLD ENT HOLD O C 2 SETUP HOLD 3 SETUP HOLD 6 SETUP ENT O HOLD ENT O O F ENT C C ATC 1. 3. Select the "SET °C°F" sub-function, then press the ENT key. Selecting temperature unit: press the or key to select the desired temperature unit "°C" or "°F". Enable/disable ATC mode: press the or key to enable (ATC ON) or disable (ATC OFF) automatic temperature compensation. - ATC disabled (ATC OFF): For manual temperature compensation you can set the process and calibration temperatures. [. . . ] Out-ofwarranty products will be repaired on an exchange basis at cost. 10. 2 Packaging / Scope of delivery The instrument is packaged in a corrugated box with an instruction manual and the following accessories: Wall mount version: · · · Plug, nylon, red, 2 pcs PG13. 5, cable gland, 3 pcs Connectors, one each of 5 way (5. 08 mm), 9 way (7. 62mm), 13 way (3. 5mm), 8 way (3. 5mm) 10. 3 Return of goods Before returning goods for any reason whatsoever, Customer Service Dept. Items must be carefully packed to prevent damage during shipment, and insured against possible damage or loss. Eutech Instruments/ Oakton Instruments will not be responsible for any damage resulting from careless or insufficient packing. Warning: Shipping damage as a result of inadequate packaging is the user's/distributor's responsibility, whoever applicable. [. . . ]