Thermo Scientific AquaSensors
™
AnalogPlus
™
Differential pH Sensor User Guide
22
3.4.5.
Ball Valve Mounting
1.0 Inch Sensors:
Standard AnalogPlus pH
sensors with 1.0 Inch NPT threads can be installed
in 1.5 inch and 2 inch ball valve assemblies. The
threads on the back of the sensor mate with threads
on the end of an o-ring sealed pipe inside the ball
valve assembly.
1.5 Inch Sensors:
For 2 inch ball valve mounting
the 1.5 Inch diameter AnalogPlus pH sensors must
have the –INS or -INSW extension in the part
number. These sensors thread onto ½ inch external
NPT threads at the end of a 2 inch ball valve
extension rod.
The sensor with an “–INS” suffix in the part number is
pictured here with a smooth CPVC body.
The sensor with a “–INSW” suffix in the part number
is pictured here with a Teflon wiper to assist with
insertion and retraction. The Teflon wiper is usually
used with PEEK® sensors in tough chemical
applications. 2-inch ball valve assemblies used with
1.5 inch diameter sensor bodies have a “–FP” suffix
at the end of the part number.
1-Inch Sensor Body
1.5-Inch Sensor Body with
–INS
Part Number Suffix
1.5-Inch Sensor Body with
–INSW
Part Number Suffix
4.0
Max
Sensor
Depth
1.5 Inch Ball Valve Assembly shown
with 1 inch diameter sensor body in
the retracted and extended positions.
Figure 3.14:
pH Sensors for Ball
Valve Applications
