JENCO EC3840, Руководство по эксплуатации

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[
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.
]
Temperature Coefficient
The unit 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.
Temperature Reference
The unit uses the temperature reference value to calculate
temperature compensated conductivity. The default value is
25
℃
. To change the temperature coefficient , use the up and
down keys to adjust the value between 15 and 25
℃
. Press
“ Enter ” key to save the new value, or press “ Mode ” key to
cancel the change and display the Conductivity Calibration
screen.
Conductivity Calibration
(a) 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.
(b) 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 25
℃
. Press “ Enter ” key to
calibrate. The unit beeps twice to indicate a successful
calibration, Then automatically switches to normal
operation mode.
B. Conductivity Measurements
1. Turn the unit on. Place the probe in the solution to be
measured. Immerse the probe (at least 2” to 3” or 5~7cm
from the tip). Shake the probe lightly to remove any
trapped air bubbles in the conductivity cell.