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51-650 Echotel SIL Safety Manual

5.3

Necessary Tools

No special equipment or tools are required to install Echotel

Model 961/962 ultrasonic level switch. The following items

are recommended:

• Wrenches, flange gaskets, and flange bolting appropriate for

process connection(s)

• Screwdrivers and assorted tools for making conduit and

electrical connections

• Digital multimeter or DVM for troubleshooting

5.4

Storage

Model 961/962 should be stored in its original shipping

box and not be subjected to temperatures outside the stor-

age temperature range -40° F to +160° F (-40° C to

+70° C), as shown in Section 3.1 of the Echotel Model

961/962 Ultrasonic Level Switches Installation and Operating

Manual (Bulletin 51.646).

5.5

Installation

The Model 961 single point switch may be used for high or

low level alarm, overfill protection, or seal pot level and

pump protection. Model 961 can be mounted vertically or

horizontally in vessels, bridles, or pipes.

The Model 962 dual point switch may be used to measure

high/low, high/high, or low/low levels. It can be used as a

level controller or to control pumps in an auto-fill or auto-

empty mode. Model 962 must be top mounted.

Refer Figures 2–5 to the Echotel Model 961/962 Ultrasonic

Single and Dual Point Level Switches Installation and

Operating Manual (Bulletin 51.646) for the proper installa-

tion instructions.

Pump

Protection

Fill Line

Dual Point Alarm

High Alarm

Low Alarm

Figure 2

Typical Mounting Orientations

Use wrench on flats

Process

connection

Figure 3

Vertical Mounting

Bottom View

Figure 4

Horizontal Mounting

Bottom View

Figure 5

Nozzle Mounting