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 units covered are Alpha C and CX 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. [. . . ] Once you have entered the password correctly, the display shows "CAL PH" indicating that you are in one of the lower-level SETUP menus. If you enter the wrong password, the display reverts back to the pH display. 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. NOTE : The user set password is a protection code. 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. Press ENTER key to enter into the pH calibration mode. Dip both the pH electrode and temperature probe in the standard solution for a few minutes. When "CAL PH" displays, press ENTER key. The current measured value (7 ±0. 3 pH) will be displayed. Once the reading stablizes, press ENTER to confirm. 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. Press MODE key to return to measurement mode. [. . . ] 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. Additional Information The controller allows you to set High and Low alarms that switch on or off relays, and activating or deactivating devices linked to the controller. In cases where the pH/ORP values fluctuate close to the high or low setpoints, the relays will continuously switch on/off very quickly and may cause problems to the linked devices. [. . . ]