Hach-Lange SENSION+, Portable Meter, LPG2500 - Manual (Page 12)

4. Use the arrow keys to select the parameter, if necessary.
5. Push and hold and then push .
The measured value flashes.
6. Use the arrow keys to change the value.
7. Push . The display shows OK.
Adjust the temperature
The temperature measurement can be adjusted at 25 °C (77 °F) and/or
85 °C (185 °F) to increase accuracy for pH, ORP and conductivity.
Note: Refer to the probe documentation to find the temperature limits for the probe
that is used.
1. Put the probe and a reference thermometer in a container of water at
approximately 25 °C and allow the temperature to stabilize.
2. Compare the temperature read by the meter with that of the
reference thermometer. The difference is the adjustment value for
the meter.
Example: reference thermometer: 24.5 °C; meter: 24.3 °C.
Adjustment value: 0.2 °C.
3. Enter the adjustment value for the 25 °C reading:
a. Push . The parameter flashes.
b. Use the arrow keys to select tEn.
c. Push . 25 °C is shown.
d. Push and then use the arrow keys to enter the adjustment
value for 25 °C. Push . 85 °C is shown.
4. Put the probe and a reference thermometer in a container of water at
approximately 85 °C and allow the temperature to stabilize.
5. Compare the temperature from the meter with that of the reference
thermometer. The difference is the adjustment value for the meter.
6. Push and then use the arrow keys to enter the adjustment value
for the 85 °C reading. Push .
About sample measurements
Each probe has specific preparation steps and procedures for taking
sample measurements. For step-by-step instructions, refer to the
documents that are included with the probe.
Push to take a sample measurement. During measurements, the
parameter flashes and the timer shows the stabilization time. To change
the measurement parameter (if applicable), push and hold .
To measure the sample continuously, push 2 times. The parameter
flashes to indicate the continuous measurement mode.
Change the temperature units
The temperature units can be changed when the measurement screen is
shown.
1. Make sure that a stable measurement reading is shown.
2. Push and at the same time. The temperature units change to °C
or °F.
Disable the auto-shutoff option
The meter is set to automatically power off after 5 minutes of inactivity to
maximize the battery life. This option can be temporarily disabled.
1. Make sure that the meter is powered off.
2. Push and hold until the display shows OFF and no. The power
remains on indefinitely.
3. To power off the meter, push and hold until the display shows
OFF.
Note: The auto-shutoff option is enabled again when the meter is powered on
normally.
Set the backlight time
The display is illuminated when is pushed. The user can set the
length of time that the backlight stays on.
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