- 5 -
numberings in RM indicates the number of stored data in current mode (cond/TDS).
For example, if 20 groups of data is stored in conductivity mode, and 10 groups in TDS
mode, then the numberings for M+ will be “
M+30
” in both conductivity and TDS mode;
the numberings for RM in conductivity mode would be “
RM20
”, in TDS mode “
RM10
”.
3.6
Max/Min Function
Use this function to display the maximum or minimum records out of groups of measuring data. In
measurement mode, press , LCD will display flashing icons of “
MAX/MIN
”, indicating the meter has
entered the mode of recording maximum and minimum data. After testing, press again, LCD will
alternately display the maximum and minimum value in the past measurements. Press to go back to
regular measurement mode.
4
Conductivity Measurement
4.1
Preparation
4.1.1 Install the electrode holder
The electrode holder is comosed of a metal stand base, a supporting pole, and a electrode clip. First,
install the metal stand base to the meter (screw it on). Please note that the metal base can be installed
on either side of the meter. Then install the supporting pole on the metal stand base, and then install the
electrode clip on the supporting pole.
4.1.2 Connect the power adapter
Plug the power adapter tightly into the DC9V socket. The power’s voltage should meet the requirements
listed on the power adapter.
4.2
Conductivity Electrode Information
4.2.1 Conductivity Electrode
The meter comes with the 35419-32 combination conductivity electrode (K=1.0) with built-in temperature
sensor, which enables the automatic temperature compensation. The electrode’s housing adopts
polycarbonate materials, which is resistant to shocks and corrosion.
4.2.2 Electrode Connectors
The pH electrode has two connectors: the BNC connector connects the conductivity sensor; the RCA
connector connects the temperature sensor. Plug these two connectors into ‘COND” and “TEMP” sockets.
Please note do not pull the cables in case of poor contact. Please keep the connectors clean and dry. Refer to
section 6.7 regarding how to properly maintain the pH electrode.
4.2.3 Use the Electrode
Stir the electrode for a few seconds after it’s dipped into the solution and then let it stand still such that the
bubbles inside the probe can be removed and a stable measurement can be quickly obtained.
4.3
Information regarding Calibration
4.3.1 Conductivity standard solutions
The meter automatically recognizes calibration solutions. 1 point or multi-points calibration (up to 4 points)
can be adopted. The calibration icons stand for 4 different calibration points (
stands for two standard
solutions), see Table-2:
