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. Secondly, it serves as a handy reference guide. This instruction manual is written to cover as many anticipated applications of the Alpha-pH2000D pH/ORP controller/transmitter. [. . . ] 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). Press the or key to adjust the pH value noted in Step 2. As the and keys are being pressed to adjust the pH value, the offset value also changes. Press the ENT key to confirm the new offset value. Continue with additional Setup procedures, or return to the Measurement mode by pressing the and keys (escape) simultaneously. Note: The offset value is reset during full calibration. See section 5 for full calibration instructions. 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". Press the ENTER key to confirm your selection. Enable/disable ATC mode: press the or key to enable (ATC ON) or disable (ATC OFF) automatic temperature compensation. Press the ENT key to confirm your selection. - ATC disabled (ATC OFF): For manual temperature compensation you can set the process and calibration temperatures. [. . . ] Otherwise wrap it with bubble pack and use a corrugated box for better protection. Include a brief description of any faults suspected for the convenience of Customer Service Dept. , if possible. Maintenance and Cleaning Maintenance The lpha pH 2000D contains no user repairable components. Please contact Eutech Instruments or its distributor if there is any problem with the unit. [. . . ]