Electro-Chemical Devices (ECD) DCA-23 - Manual (Page 14)

Page 8 DCA-23 Dechlorination Analyzer
3.1 KEYS
The blinking cursor indicates the active point where menus can be selected or numerical values
adjusted. There are two sets of keys on the DCA-23 analyzer, the MENU SELECT keys and the CALIBRATE
keys.
The MENU SELECT keys are used to move the cursor vertically changing the displayed menu. These keys
are also used to Save/Accept the calibration data and exit the calibration menu.
The CALIBRATE keys are used to enter menus, change numerical values and move the cursor.
To enter a calibration menu or parameter adjustment line, simultaneously press both of the
Horizontal CALIBRATE keys, ◄CALIBRATE►
Pressing either of the Horizontal CALIBRATE keys separately will move the cursor horizontally to the
point under the digit to be adjusted. The Vertical CALIBRATE keys are used to adjust numeric values.
Pressing the upper key will increase the value and pressing the lower key will decrease the value.
3.2 MENUS
There are two sets of menus on the Model DCA-23. The Channel 1 menus (PV1) are the TRO menus, the
Channel 2 menus (PV2) are the pH menus. Pressing the MENU SELECT Down key will access the pH
channel, pressing the MENU SELECT Up key will access the TRO channel. See the guide below for the
general menu structure.
3.2.1 TRO Menus
Screen Displayed Button Pressed
Cl ppm .23
23.6% 12.8°C
Home Screen (view only)
Press MENU SELECT ▲
to move to TRO Screen
TRO 526.9 mV
12.8°C
TRO Screen (view only)
MENU SELECT ▲
Input 520.5 mVa
0 mVa 6.4 mV
TRO Raw Input Screen (view only)
MENU SELECT ▲
1 TRO 180.0 mV
Cal 173.5 mVa
TRO Calibration 1 Screen
MENU SELECT ▲
2 TRO 0.0 mV
Cal 1.000 mV/TRO
TRO Calibration 2 Screen
MENU SELECT ▲
4 mA .00 ppm
20 mA 1.00 ppm
Chlorine 4-20 mA Adjustment screen
MENU SELECT ▲
ON .00 ppm
OFF .00 ppm Chlorine Alarm Relay Adjustment screen
MENU SELECT ▲