eutech-instruments field phorpconductivity monitors Manuel D’Utilisation

 

 

10

•  Salt deposits: Dissolve the deposits by immersing the electrode in tap water for 

ten to fifteen minutes. Then thoroughly rinse with distilled water.  

•  Oil/Grease film: Wash electrode pH/ORP bulb gently in some detergent and 

water. Rinse electrode tip with distilled water or use a general-purpose electrode 
cleaner (see ordering information).  

•  Clogged reference junction: Heat a diluted KCl solution to 60 to 80  C. Place the 

sensing part of the electrode into the heated solution for about 10 minutes. Allow 
the electrode to cool in some unheated KCl solution.  

For general cleaning, the use of deionized water will be sufficient.  Rinse the 
electrode thoroughly in the deionized water.  After cleaning, wipe the electrode dry.  
Never touch the metal sensors.  

For intensive cleaning, when the electrode is contaminated, wash it carefully with a 
mild detergent, after which wash thoroughly with deionized water.  Always ensure 
that there are no blockages of the electrode cavity.  If there is, use a gentle jet of 
water to dislodge any particles that may have been stuck there.   

 

No display 

a). Power adapter is not  

connected properly or is 
faulty.  
 
 

a). Check that power adapter and 

its wire are in place and 
making good contact.  

b). Check power supply.   

Unstable 
readings 

a). Air bubbles in probe. 

 

b). Dirty probe.  

 

c). Probe not deep enough 

in sample.  

d). External noise pickup or 

induction caused by 
nearby electric motor.  

a). Tap probe to remove bubbles.  

 

b). Clean the probe and re-

calibrate.  

c). Make sure sample entirely 

covers the probe sensors.  

d). Move or switch off interfering 

motor.  
 

No response 

a). Broken probe. 

a). Replace probe 

Slow response 

a). Dirty / Oily probe.  

a). Clean probe. See “Electrode 

Care & Maintenance” section.