Honeywell 70-82-25-18 manual Insertion-Type Mounting, FlowIn

Installation

3.6 Insertion-Type Mounting

The cell can be inserted into a 1” N.P.T. threaded opening, but it is imperative that the tank or chamber be full under all process conditions. Make certain the liquid head is above the cell location. A vertical insertion (from above) or a horizontal insertion can be used. To install, simply tighten the cell into a 1” N.P.T. threaded opening (using a Teflon thread compound such as Teflon tape) so that the entire electrode is immersed in the measured solution. Allow at least 1/2-inch clearance beyond the end of the cell. In applications where vertical mounting is required, avoid a position with the cell channels pointed up, as this will permit solution to flow down into the open end of the cell and may result in clogging by solids settling in the cell channels. See Figure 3-1.

11/2"	1 1/2"	FlowOut
		3/4"NPT
(38mm)			FlowChamber
Octagon	(38mm)	11/2"
		(38mm)
11/2"		Octagon	3/4"NPT
(38mm)	CELL
			IN
		83/4"
		(222mm)

131/4"

(337mm)

1"Fitting Allow73/4"(197mm) for removal o f cell

FlowIn

Notes

1.Mount cell and flow chamber horizontally as shown above with flow exit “up to eliminate possible air gap around cell body.

2.If cell and flow chamber must be mounted vertically, attach a short length of tubing to flow exit as shown below and form a trap to ensure filing of flow chamber, especially at low flow.

CELL

2"min. (51mm)

IN

Figure 3-2 Dimension Drawing for 276127 Flow Housing

12/07 4905 Series Conductivity Cells – Installation and Maintenance 7