- 3 -
3
OVERVIEW
3.1
Front Panel
The front panel consists of a 4-digit LED display, 8 LED annunciators and 4 keys.
Annunciators
1. REL 1
Displayed when Relay 1 is activated.
2. REL 2
Displayed when Relay 2 is activated.
3. MEAS
Displayed in measurement mode.
4. CAL
Displayed in calibration mode.
5. SETUP
Displayed in setup mode.
6. pH
Unit of the displayed parameter (pH).
7.
o
C
Unit of the displayed parameter (temperature).
8. mV
Unit of the displayed parameter (ORP).
Keys
9. MODE
Use to toggle between Measurement modes
(pH/ORP and temperature).
10. CAL / ENTER
Use to enter Calibration mode.
Use also to enter into levels of the Setup mode
and to confirm changes made.
11. SP1 /
▲
SP2 /
▼
Use to enter Set Point 1 (SP1) or Set Point 2
(SP2) adjustment mode.
Use as increment or decrement keys during
Calibration and Setup modes.
Use both keys together in Calibration and Setup
modes to escape to Measurement mode.
12.14-segment display
SP1
CAL
ENTER
MODE
pH 190 Series
SP2