MECHANICAL INSTALLATION
The TBU-00 transmitter is suitable to be installed in instrument enclosures. Vibrations,
moisture, extreme temperatures, electro-magnetic interference, high voltage, and
other interferences can permanently damage the unit, and could cause an error in the
measured value.
ELECTRICAL INSTALLATION
Recommended wire size: 26 AWG to 16 AWG (0.14 to 1.5 mm
2
).
Recommended terminal torque: 7.08 in-lbf (0.8 Nm).
RECOMMENDATIONS FOR INSTALLATION
Separate signal lines from facility power lines. The use of grounded conduit is
recommended.
The instrument must be powered from the instrumentation power supply circuit.
Transient suppression should be used with inductive loads such as contact coils and
solenoids.
ELECTRICAL CONNECTIONS
The figures below shows the electrical connections required. Terminals 3, 4, 5 and
6 are dedicated to the sensor connection.
LOAD
represents the 4 to 20 mA current
measuring device (indicator, controller, recorder, etc.).
Note:
When using a Pt100Ω 2-wire RTD, terminals 3 and 4 must be interconnected,
according to Figure 3 below. The Pt100 wire length should be less than 12 in (30 cm)
to maintain the measurement error within specifications (electrical resistance).
Figure 3: Pt100 2-wire
Figure 5: Pt100 4-wire
Figure 6: NTC 2-wire
Figure 7: Thermocouples
Figure 4: Pt100 3-wire
LOAD
JUMPER
Pt100 SENSOR
2-WIRE
POWER
SUPPLY
TRANSMITTER
LOAD
Pt100 SENSOR
3-WIRE
POWER
SUPPLY
TRANSMITTER
LOAD
Pt100 SENSOR
4-WIRE
POWER
SUPPLY
TRANSMITTER
LOAD
NTC SENSOR
2-WIRE
POWER
SUPPLY
TRANSMITTER
LOAD
THERMOCOUPLE
SENSOR
POWER
SUPPLY
TRANSMITTER
