A151 Benchtop Conductivity Meter
5
Switching the Meter On and Off
•
Press and hold the
key to switch on the meter, the display shows the measured values.
•
Press and hold the
key for 3 seconds, the meter will switch off.
To enable the Auto-Power Off feature, please refer to chapter SETUP MENU.
Setup Menu
The A151 conductivity meter contains an integrated setup menu that is used to customize the displayed option to meet measurement requirements. The
following table describes the functions of the menu items.
MENU
OPTIONS
DESCRIPTION
DEFAULT
Sample ID
0000 to 9999
Set the sample ID to associate readings with the data log.
0000
Cell Constant
2-pole electrode (K=0.1)
Set the cell constant to match connected electrode.
2-pole
electrode
(K=1)
2-pole electrode (K=1)
2-pole electrode (K=10)
4-pole electrode
Calibration Points
1 to 3 points
Set the number of calibration points.
3 points
Temperature Coefficient
Linear (Range: 0.0 to 10.0%/° C)
Set the temperature compensation type and coefficient.
Linear
(2.1%/° C)
Non-linear
Pure Water Coefficient
Enable
When the option is enabled, pure water coefficient will be
applied automatically for ultra-pure water measurements.
Disable
Disable
Reference Temperature
20° C
Set the normalization temperature for conductivity
measurement and calibration.
25° C
25° C
TDS Factor
Range: 0.01 to 1.00
Set the default TDS conversion factor.
0.50
Alarm Limits
Enable
Set the high and low limit values to activate alarm
(Range: 0 to 999).
Disable
Disable
Calibration Due
Enable
Set the calibration interval to activate alarm (1 to 31 days).
Disable
Disable
Temperature Unit
° C
Set the default temperature unit.
° C
° F
Stability Criteria
Standard
Set when a measurement is recognized as stable.
Standard
High-accuracy
Auto-Read
Enable
When the option is enabled, the meter will automatically
sense a stable reading and lock the measurements.
Disable
Disable
Auto-Power Off
Enable
When the option is enabled, the meter will automatically
switch off if no key is pressed within 3 hours.
Disable
Disable
Date and Time
Year-month-day, hour-minutes
Set the current date and time.
