Thermo Fisher Scientific ECFP21A1A1 Differential pH Sensor - Manual (Page 7)

Blk 55, Ayer Rajah
Crescent, #04-16/24
Singapore 139949 +65 6778 6876
+65 67730836 fax www.thermofisher.com
PRODUCT DESCRIPTION
2.1 Sensor Description
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.
Salt bridge:
¾ Protected for standard 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
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.