Cell; Temperature Coefficient; Temperature Reference; Conductivity Calibration - ECD H10C Instruction Manual

Microprocessor based conductivity, tds, salinity, temperature hand held meter

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b. CELL

The second screen will display CELL and the current cell value. The default cell value is

0.50 and is displayed in the lower right of the screen. The unit allows a variance of +/-

0.15 before displaying an error message. The cell value can't be adjusted at this screen;

calibrating conductivity is the only way to adjust the cell constant. Press "Enter" key to

reset the cell constant to 0.50 and display the Temperature Coefficient screen.

[Note: Be certain to press "Enter" key to reset the cell constant to 0.50. If "Mode" key is

pressed, the unit retains the previous cell constant and calibrates from a value that is

already offset.]

c. Temperature Coefficient

The meter uses the temperature coefficient to calculate temperature compensated

conductivity. The default value is 1.91%. To change the temperature coefficient, use the

up and down keys to adjust the value between 0 and 4.00%. Press "Enter" key to save

the new value, or press "Mode" key to cancel the change and display the Temperature

Reference screen.

d. Temperature Reference

The unit uses the temperature reference value to calculate temperature compensated

conductivity. The default value is 77°F (25°C). To change the temperature coefficient,

use the up and down keys to adjust the value between 59 and 77°F (15 and 25°C). Press

"Enter" key to save the new value, or press "Mode" key to cancel the change and

display the Conductivity Calibration screen.

e. Conductivity Calibration

Immerse the probe in a standard of known conductivity, preferably a standard in

the middle range of the solutions to be measured. Immerse the probe (at least 2"

to 3" or 5~7cm from the tip) without touching the sides of the calibration

container. Shake the probe lightly to remove any air bubbles trapped in the

conductivity cell.

Allow temperature to stabilize. The message "rAGE" (range) may display briefly to

indicate unit auto-ranging; this is normal. After temperature stabilization, use the

up and down keys to adjust the conductivity value to that of the conductivity

standard at 77°F (25℃). Press "Enter" key to calibrate. The unit beeps twice to

indicate a successful calibration, then automatically switches to normal operation

mode.

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