eutech-instruments cyberscan ph 110 phmvrs232 meter User Manual

Page of 76
Instruction Manual   
 
CyberScan pH 11 / 110  
 
13
4.3 pH 
Calibration 
with 
ATC 
NOTE:  We recommend that you perform at least 2-point calibration using standard 
buffers that bracket (one above and one below) the expected sample range.   
1.  If necessary, press the MODE key to select pH 
mode. The pH indicator appears in the upper 
right hand corner of the display.  
2.  Rinse the probe thoroughly with de-ionised 
water or a rinse solution.  Do not wipe the 
probe; this causes a build-up of electrostatic 
charge on the glass surface.  
3.  Dip the probe into the calibration buffer. The 
end of the probe must be completely immersed 
into the sample. Stir the probe gently to create a 
homogeneous sample.  
4.  Press CAL/MEAS key to enter pH calibration 
mode.  The CAL indicator will be shown. The 
primary display will show the measured reading 
while the smaller secondary display will indicate 
the pH standard buffer solution.  
5.  Wait for the measured pH value to stabilise 
(The READY indicator will be shown only if it is 
activated in the set up menu).  
6.  Press HOLD/ENTER key to confirm calibration.  
The meter is now calibrated to the current 
buffer.   
See figure on right.  
 
 
 
 
 
 
 
 
MEAS
pH
ATC
°C
7.16
22.3
CAL
pH
pH
7.16
7.00
CAL
pH
pH
READY
7.16
7.00
CAL
pH
pH
READY
7.00
7.00
MEAS
CAL
ENTER
HOLD
Figure 11: pH Calibration 
sequence