Electro-Chemical Devices (ECD) DCA-23 - Manual (Page 17)

DCA-23 Page 11
3.3 CALIBRATION MENUS
3.3.1 pH Calibration
Screen Displayed Button Pressed
1 pH 7.00 pH
Cal .0 mV
◄ CALIBRATE ►(enters calibration line, zero pt. Cal 1)
Sensor should be in a 7.0 pH solution.
1 pH 7.00 pH
Cal 0.2 mV
MENU SELECT ▼ (accepts the Calibration when the mV
value is stable)
1 pH 7.00 pH
Cal 0.2 mV
MENU SELECT ▼ (move down to Cal line)
(Entering the Cal line resets value to 0.0 mV)
1 pH 7.00 pH
Cal 0.2 mV
MENU SELECT ▼(move to Cal 2, Slope)
Remove and rinse sensor with distilled water
2 pH 10.00 pH
Cal 59.1 mV/pH
◄ CALIBRATE ► (enter Cal Line)
Place Sensor in a pH 10.00 solution
2 pH 10.00 pH
Cal 60.2 mV/pH
Set the pH value using the CALIBRATE ◄ or ► to move
cursor. Use the ▲or▼ to adjust the integer value.
2 pH 10.00 pH
Cal 60.2 mV/ppm
MENU SELECT ▼ (accept Calibration)
2 pH 10.00 pH
Cal 60.2 mV/ppm
MENU SELECT ▲ (return to Home Screen)
3.3.2 TRO Calibration
Screen Displayed
Button Pressed
1 TRO 180.0 mV
Cal 173.4 mVa
Run DPD test on Sample, Determine TRO value from
Calibration Curve using DPD Value and pH
1 TRO 180.0 mV
Cal 173.4 mVa
press ◄ CALIBRATE ► to initiate Calibration.
1 TRO 526.0 mV
Cal 519.0 mVa
Enter the TRO Value using the CALIBRATE ◄ or ► to move
cursor. Use the ▲or▼ to adjust the integer value.
1 TRO 526.0 mV
Cal 519.0 mVa
MENU SELECT ▲ (accept Calibration)
2 TRO .00 mV
Cal 1.000 mV/TRO
MENU SELECT ▲
Verify slope 1.000 mV/TRO
2 TRO .00 mV
Cal 1.000 mV/TRO
◄ CALIBRATE ► (enter Cal Line)
Resets value to factory Default: 1.000 mV/TRO
2 TRO .00 mV
Cal 1.000 mV/TRO
MENU SELECT ▼ (return to Home Screen)
3.3.3 Temperature Trim
Screen Displayed Button Pressed
Trim °C .0
Unit 12.8°C
press ◄ CALIBRATE ► to initiate Calibration.
Trim °C 2.4
Unit 15.2°C
Enter the Temp Value using the CALIBRATE ◄ or ► to
move cursor. Use the ▲or▼ to adjust the integer value.