Elma 795
UK 36
v. 290817
06-09-2016 10:40:26
Calibration procedure, pH electrode
1.
Follow pkt. 5-1 or pkt. 5-2.
2.
Use two fingers to press the "▲ Button" (3-5, Fig 1) and "▼ Button" (3-6, Fig. 1) at the same time.
Until Display shows the following screen
then release the both fingers.
3.
Pressure within 3 second "
▲ ” button (3-5, Fig. 1) or "▼” button (3-6, Fig. 1) once in sequence to
select the following screen:
For pH 4.00 calibration
CAL
4.00
For pH 10.00 calibration
CAL
10.00
For pH 7.00 calibration
CAL
7.00
Clear the existing
calibration data
CAL
CLr
* Press the "
Enter
Button" (3-8, Fig. 1) will save the calibration data and finish the calibration procedures.
* Use
CLr
and clear existing calibration data
4) The complete procedures should execute the two calibration points starting with
PH7 calibration
then
follow
PH4 calibration (or PH10 calibration).
*
Rinse the electrode with distilled water again when make each point calibration.
* Repeat above two points procedures two times at least.
6. CONDUCTIVITY/TDS MEASURING and CALIBRATION PROCEDURE
If the meter along with the conductivity probe, is used for a certain
period, then it should execute the calibration procedures see pkt. 6-3
.
6-1 Conductivity measurement
1.
Connect the conductivity
Probe (CDPB-03) (6-1, Fig.3) into the "
CD
” Socket (3-15, Fig.1)
2.
Use the "
Function”
Button, step to the
”
Cd
” function. See pkt. 4.
3.
Hold the electrode handle (6-2, Fig. 3) by hand and let the sensing head (6-3, Fig. 3) immersed wholly
into the measured solution and little shake the electrode.
4.
The Display will show the conductivity mS (uS) values. At the same time the left bottom display will
show the Temp. value of the measured solution.
Manual range operation
The meter is default in auto range mode. Push the "Range Button" (3-5, Fig. 1) once in sequence will
change the range from 200 uS, 2 mS, 20 mS, 200 mS and auto range.
Zero adjustment
If the probe not immerse the measurement solution and the display not show zero value, pressing the
"
Zero
(RANGE) Button" (3-5, Fig.1) continuously at least 10 seconds will let display show zero. The zero
function only valid for the 200 uS range and the not zero value is < 2.0 uS.
6-2 TDS (PPM) Measurement
The measuring procedures are same as above 6-1 Conductivity (uS, mS) measurement.
Then use Function key select to TDS Function position.
PH
CAL
The meter default function are following:
*
The display unit is set to conductivity (uS, mS ).
* The temperature unit are set to
℃
.
* Temp. compensation factor is set to 2.0% per C.
* Auto range.
*
Auto power off.
