Manual


  
Important: Always “zero” your Ultrameter II

a. 
 
 
 
solution.
  to verify the
pH calibration. If the display
 
Zero Calibration and
proceed to section b. pH
Gain Calibration.
4. Press to enter calibration mode. The “CAL”, “BUFFER”
and “7
value will be the uncalibrated sensor.
NOTES: 7” and “BUFFER”
II will not adjust.
The uncalibrated pH value displayed in step 4 will assist in determining

buffer solution, the sensor well needs additional rinsing or the pH sensor
is defective and needs to be replaced .
  or 
NOTE: Attempted calibration of >1 pH point from factory calibration will
cause “FAC” to appear. This indicates the need for sensor replacement
The “FAC” internal
electronic calibration is not intended to replace calibration with pH
buffers. It assumes an ideal pH sensor. Each “FAC” indicates a factory

 to accept the preset factory value, or you may
Figure 6
BUFFER
pH
CAL