Electro-Chemical Devices (ECD) DCA-23 - Manual (Page 16)

Page 10 DCA-23 Dechlorination Analyzer
1 pH 7.00
Cal .0 mV@25
pH Cal 1 Screen
MENU SELECT ▼
2 pH 10.01
Cal -59.1 mV/pH
pH Cal 2 Screen
MENU SELECT ▼
4 mA .00
20 mA 14.00
pH 4-20 mA Adjustment screen
MENU SELECT ▼
ON .00 pH
OFF .00 pH pH Alarm Relay Adjustment screen
MENU SELECT ▼
Trim °C .0
Unit 12.8°C Temperature Trim/ Units Screen
MENU SELECT ▲….. To return to the Home screen
3.2.2.1 Home Screen
The Home Screen displays the calculated Chlorine value and engineering units, Chlorine ppm, the % 4-20
mA output and the temperature.
3.2.2.2 pH Screen
The pH Screen displays the pH value, the % mA output and the temperature.
3.2.2.3 pH Raw Input Screen
The pH Raw Input Screen displays the actual mV signal from the pH sensor on line 1 and the amount of
zero point correction applied on line 2.
3.2.2.4 pH Cal 1 Screen
The pH Calibration 1 Screen is an ENTRY screen. This is a zero point calibration screen, use pH 7.00
buffer to set the zero point, also used to standardize the reading.
3.2.2.5 pH Cal 2 Screen
The pH Calibration 2 Screen is an ENTRY screen. This is a slope correction screen, mV/pH. Use pH 10
buffer to set the slope. The default value is -59.1 mV/pH.
3.2.2.6 pH 4-20 mA Screen(optional)
The pH 4-20 mA Screen is an ENTRY screen. Set the range of the 4-20 mA output in this screen. Default is
0.00 pH – 14.00 pH = 4-20 mA.
3.2.2.7 pH 4-20 mA Screen(optional)
The pH Alarm Relay screen is an ENTRY screen. This allows the alarm relay to be configured as High or
Low Set Point (ON) and hysteresis value (OFF).
3.2.2.8 Temperature Trim and Units Screen
The Temperature Trim allows the temperature to be adjusted, removing inaccuracies from extended
cable lengths. Units, °C or °F are also set in this menu.