SMAR TT302, Installation, Operation & Maintenance Instruction Manual

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Configuration
3-5
CONNECTION
DOUBLE TWO WIRE
TWO WIRE
THREE WIRE
FOUR WIRE
Table 3.2 - Type of Connection Table
How to Connect Two Sensors
Transmitter series TT302 are capable of operating simultaneously with two sensors,
using two transducer blocks, if necessary. Configuration types in two sensors operation
are as follows:
Differential – In this case there is only one transducer. Transducer output is the
difference between the readout of sensor 1 (between terminals 3 and 4) and the readout
of sensor 2 (between terminals 2 and 4).
Backup – In this case there is only one transducer.
Should the first sensor (between terminals 3 and 4) open, the second sensor (between
terminals 2 and 4) will supply the signal to the transducer.
Double
- In this case there are two transducers. Each sensor provides a signal to its
respective transducer.
In order to be able to operate with sensors in the backup or differential modes, the user
shall actuate parameter PRIMARY_VALUE_TYPE. In order to operate with double
sensors, the user shall actuate parameter SENSOR_CONNECTION.
Figure 3.5 - Temperature Calibration - TT302
This list contains the
Simple, Backup and
Differential type of
temperature
calculation. This parameter sets
the type of
calculation sh ould
be done for each
transducer.
TT2EM305.CDR