Specifications
11 
5.3  Relative mV Calibration  
1.  From  the ORP  MEAS mode, press  CAL key. 
CAL  indicator  appears  at  top  of  LCD.  Primary 
display  shows  relative  mV  reading  and 
secondary display shows absolute mV value. 
2.  NOTE:  If  you  have  never calibrated relative mV 
or  if  the  transmitter  has  been  reset,  the  value 
shown in the primary display is the same as the 
absolute mV value. 
3.   Press  ▲  or ▼  keys to  enter  the relative  mV 
value  that matches  your  desired reading  (only 
the readings in the primary display changes). 
4.  Press ENTER key to confirm. Transmitter will 
now display the offset in the readings. 
5.  Press ENTER key to return to MEAS mode. 
5.4  Temperature Calibration  
Temperature calibration is available  only in the pH measurement  mode and when 
ATC probe is available. 
Calibrate  temperature  probe  only  if  temperature  value  displayed  on  transmitter  is 
different  from  that  of  a  calibrated  thermometer.  Please  refer  to  section  6.3.1  for 
further information. 
CAL
HOLD
READY
R.mV
CAL
HOLD
READY
CAL
HOLD
READY
R.mV
R.mV










