Hach-Lange 3400 sc - Manual (Page 19)

15
Installation
3.3 Installing the Sensor in the Sample Stream
Two compression-style installation schemes are available. For sensors with a 0.05 cell
constant, use ½-in or ¾-in male NPT compression fittings made of Kynar (PVDF) or
316 stainless steel. For sensors with any other cell constant, use a ¾-in. male NPT
compression fitting made of Kynar or 316 stainless steel. In all cases, the fitting enables
the sensor to be insertion mounted, up to 102 mm (4 in.) deep, into a pipe tee or vessel.
Reversing the fitting enables the sensor to be fastened onto the end of a pipe for
immersion mounting.
A longer version of the sensor can be installed into a 316 stainless steel ball valve
assembly to insert/retract the sensor without stopping the process flow. Maximum
insertion depth is 178 mm (7 in.).
Examples of common sensor installations are shown in Figure 13: "Sensor Installation
Examples" and dimension drawings are shown in Figure 1: "Compression-style Sensor,
0.5-in. Diameter" on page 8 through Figure 7: "Boiler/Condensate Sensor" on page 10 .
Refer to the instructions supplied with the mounting hardware for installation specifics.