eutech-instruments alpha ph differential probe Manuel D’Utilisation

Instruction 

manuals 

 

         ECFP21A1A1 

 

 

 

3

 

The ECFP21A1A1 1½ inch pH sensor uses a differential measurement technique to maximize lifetime in 

continuous industrial applications.  The ground rod and encapsulated preamplifier construction reduce the 
effects of ground loops and allow the pH signals to be transmitted up to 3,000 feet.  A replaceable heavy-

duty quad junction salt bridge makes it simple to refurbish the sensor when necessary.  The large reference 
reservoir filled with buffered solution minimizes the effects of dilution and extends the life of the reference 

electrode. The wires in the sensor cable are color coded to allow for quick and easy installation into the 
Alpha pH2000D Controller.  
 
 

The sensor body has 1½ inch NPT threads for the following 
mounting options: 

 

¾ 

Standard 1½ inch NPT pipe tee insertion. 

¾ 

Immersion mounting assembly. 

 

Salt bridges come in two styles: 

 

¾ 

Protected for standard applications.  

¾ 

Flat for sanitary applications. 

The wires in the sensor cable are color coded to match the 

terminal connection within the Alpha pH2000D Controller. 

Figure 2.2: pH sensor hook-up 

Figure 2.1: 1½ inch pH Sensor  

with Salt Bridge Options