Installation Manual

Rosemount Tank Radar REX

308014EN, Edition 4

Chapter 11 Electrical Installation of the

May 2013

 

 

11.5.8Temperature Sensors

Up to six spot temperature elements can be connected to the REX transmitter if the Temperature Multiplexer Card (TMC) is installed. The TMC board must be configured in accordance with the type of sensor that is used (see chapter 4.1.8 in the REX Service Manual for detailed instructions on how to configure the TMC card):

•The internal connections to the TMC board must be properly set for 1-3 three-wire independent elements (socket X3 on the TMC), or

1-6 sensor elements with common return (socket X2 on the TMC).

•The TMC board must be adapted to the type of sensor that is used. For average elements or sensor elements with common return wire there must be three jumpers in socket X4 and one jumper in socket X5.

For three-wire independent elements no jumpers shall be installed.

Normally these jumpers are installed at factory, and do not need to be changed unless you change to other sensor types than origi- nally specified.

Use the TankMaster WinSetup program to configure the temperature sensors. WinSetup allows you to configure the transmitter by specifying sensor type, sensor positions and measurement range.

Connecting the Temperature Sensors

Temperature sensors must be connected in the correct order starting with connection X12:8 for temperature sensor one. The other sensors are connected as shown in Tables 11-8and 11-9.

Spot Elements

Spot temperature sensors use two wires per sensor plus one wire for common return current.

Sensor

Connection

1X12: T8-T10

2X12: T11-T13

3X12: T13-T15

Table 11-8. Connections for three-wire independent temperature sensors.

11-18

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Emerson 308014EN, Edition 4 installation manual 11-18, Connecting the Temperature Sensors, Spot Elements
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