User manual EUTECH INSTRUMENTS ALPHA PH 100 PHORP CONTROLLERTRANSMITTER

[. . . ] Alpha pH 100 C/CX pH/ORP Controller / Transmitter INSTRUCTION MANUAL 7. 0 pH/OR o MODE ENTER RELAY C SETU READY Technology Made Easy . . . Preface This manual serves to explain the use of the Alpha pH 100 pH/ORP Controller/Transmitter. The instruction manual functions in two ways: first, as a step by step guide to help you operate and understand the operation of the unit and second, as a handy reference guide. The information presented in this manual is subject to change as improvements are made, and does not represent a commitment of Eutech Instruments Pte Ltd. This instruction manual is written to cover as many anticipated applications of the Alpha pH 100 C/CX pH/ORP Controller/Transmitter as possible. [. . . ] Alternatively, if you prefer no password protection, set the password to "000", "CAL PH" immediately displays after you press ENTER key while you are in the "SEt" menu. Thus, it is very important to keep this password strictly confidential to authorized personnel. You are advised to remember the password that you have set, in order to protect the controller settings and prevent any unauthorized tampering to the system!IMPORTANT : In case the password set is forgotten, use the master password "555". 4. 1. 2 Changing the Password Enter the Set id menu with already set password or "555". Change a new password as per steps mentioned for setting the password. 9 5. Calibrating the Controller 5. 1 The Lower Level Menus The "CAL PH/CAL OrP" display is the first menu seen upon entering the lower-level menus, depending on which mode is set. Press v or w key to display the various menus as shown in the figure below. Press ENTER key to go to the lower level menus. START CAL pH / CAL OrP SEt id Lo Hys CAL C o Hi SEt Hi Hys Lo SEt 5. 2 Calibrating for pH Measurement 5. 2. 1 The CAL PH menu 1. Enter this menu by pressing the MODE key twice to the "SEt" display if you are in measurement mode. If the password has been set earlier, key in the password using the method described in section 4. 1. After you set the correct password, you can see the "CAL" and "PH" displays, blink alternately. Dip both the pH electrode and temperature probe in the standard solution for a few minutes. Use w keys to scroll to the other buffer values "PH4" and "PH10", in that sequence. Press ENTER to confirm and 10 complete the pH calibration, as fo pH 7. 0. Dip both the ORP electrode and temperature probe in the standard solution for a few minutes. When "CAL OrP" displays, you can see the present mV value blinking, press v or w key to adjust the mV value. Press MODE key to return the controller to its measurement mode. SEt 3. CAL OrP 4. 5. 6. 5. 5 Calibrating for Temperature Measurement 5. 5. 1 The CAL °C Menu 1. Enter this menu by pressing MODE key twice to the "SEt" display if you are in measurement mode. If the password has been set earlier, key in the password using the method described in section 4. 1. After you set the correct password, you see CAL SETUP MODE ENTER 1. o C MODE ENTER SETUP 12 2. the "CAL" and "PH" display blinks alternatively. Press w key once, the display shows "CAL""oC" blinking. Press ENTER and the display alternatively shows "Atc" and "On" or "Atc" and "OFF". [. . . ] If the pH is less than 0. 0 pH, the current signal will be set to approximately 0 mA. If the pH is greater than 14. 0 pH, it will be set to approximately 21 mA. In this way, the remote data logger can detect when out of range conditions arise. Please note that the 4-20 mA loop is not galvanically isolated from the source. 19 7. [. . . ]