Hanna Instruments hi 9835 사용자 설명서
11
10
TEMPERATURE CALIBRATION
TEMPERATURE CALIBRATION
TEMPERATURE CALIBRATION
TEMPERATURE CALIBRATION
TEMPERATURE CALIBRATION
(((((for technical personnel only)
for technical personnel only)
for technical personnel only)
for technical personnel only)
for technical personnel only)
The calibration is 2 points at 0.0, 50.0 C.
• Immerse the probe in a 0 C temperature bath.
• Press ALT+CALT to enter temperature calibration mode.
• The lower LCD displays "0.0 C"; "BUF" and "CAL" tags appear.
• When the reading is stable, "CON" symbol starts to blink.
• Press ALT+CFM to confirm. The lower LCD displays 50.0 C.
• Immerse the probe in a 50 C temperature bath.
• When the reading is stable, "CON" symbol starts to blink.
• Press ALT+CFM to confirm and return to normal operation.
• Immerse the probe in a 0 C temperature bath.
• Press ALT+CALT to enter temperature calibration mode.
• The lower LCD displays "0.0 C"; "BUF" and "CAL" tags appear.
• When the reading is stable, "CON" symbol starts to blink.
• Press ALT+CFM to confirm. The lower LCD displays 50.0 C.
• Immerse the probe in a 50 C temperature bath.
• When the reading is stable, "CON" symbol starts to blink.
• Press ALT+CFM to confirm and return to normal operation.
TEMPERATURE ADJUSTMENT
TEMPERATURE ADJUSTMENT
TEMPERATURE ADJUSTMENT
TEMPERATURE ADJUSTMENT
TEMPERATURE ADJUSTMENT
The temperature reading can be manually fine-tuned by following this
procedure:
procedure:
Press ALT+CALT to enter the temperature
calibration mode.
calibration mode.
Press CAL to enter the temperature adjustment mode.
The upper and lower LCD will display the current
temperature reading.
The upper and lower LCD will display the current
temperature reading.
Adjust the temperature reading on
the upper LCD using the arrow keys.
The maximum adjustment is ±1 C
around current reading.
the upper LCD using the arrow keys.
The maximum adjustment is ±1 C
around current reading.
Press ALT+CFM to confirm. The meter re-
turns to measurement mode and displays
the new temperature.
turns to measurement mode and displays
the new temperature.
Note: Press ALT+CALT to escape without any changes.
Note: It is possible to enter the temperature adjustment mode only if
Note: It is possible to enter the temperature adjustment mode only if
the probe is connected.
NNNNNaaaaaCCCCClllll CALIBRATION
CALIBRATION
CALIBRATION
CALIBRATION
CALIBRATION
Calibration is 1-point at 100.0% NaCl. Use the
HI 7037 calibration
solution (sea water solution) as a 100% NaCl standard solution.
To enter NaCl calibration select the NaCl range and
press the CAL key.
press the CAL key.
Rinse the probe with some of the calibration solution or
deionized water. Immerse the probe into HI 7037 solu-
tion. The sleeve holes must be completely submerged.
Tap the probe repeatedly to remove any air bubbles that
may be trapped inside the sleeve.
deionized water. Immerse the probe into HI 7037 solu-
tion. The sleeve holes must be completely submerged.
Tap the probe repeatedly to remove any air bubbles that
may be trapped inside the sleeve.
The indications "BUF" and "CAL" are dis-
played. The upper LCD shows the uncalibrated
NaCl reading in percentage. The lower LCD
shows "100".
When the " " symbol stops blinking, the
reading is stable. The "CON" indication starts
blinking on the LCD asking for confirmation.
played. The upper LCD shows the uncalibrated
NaCl reading in percentage. The lower LCD
shows "100".
When the " " symbol stops blinking, the
reading is stable. The "CON" indication starts
blinking on the LCD asking for confirmation.
Press ALT + CFM to confirm the calibration.
If everything is satisfactory, the meter displays the "Stor Good" mes-
sage and returns to measurement mode.
Note: If the uncalibrated reading is too far from the expected value,
sage and returns to measurement mode.
Note: If the uncalibrated reading is too far from the expected value,
the calibration is not recognized. The "CON" indication does not
appear; the " " and "BUF" symbols blink to signal wrong or
contaminated calibration solution.
appear; the " " and "BUF" symbols blink to signal wrong or
contaminated calibration solution.
Note: The meter uses 1.90%/ C compensation factor during calibra-
tion. If the setup item "tc" has been set to a different value,
when exiting calibration mode the value displayed on the upper
LCD could be different from the nominal calibration value.
when exiting calibration mode the value displayed on the upper
LCD could be different from the nominal calibration value.
III
In order to minimize any EMC interference, use plastic beakers.
IV
The meter uses 1.90%/ C compensation factor during calibra-
tion. If the setup item "tc" has been set to a different value,
when exiting the calibration mode the value displayed on the
upper LCD could be different from the nominal buffer value.
tion. If the setup item "tc" has been set to a different value,
when exiting the calibration mode the value displayed on the
upper LCD could be different from the nominal buffer value.
V
It is possible to set the cell constant value directly without
following the calibration procedure. To set the cell constant
enter the setup mode and select "CEL" (see SETUP for details).
following the calibration procedure. To set the cell constant
enter the setup mode and select "CEL" (see SETUP for details).