INSTRUCTION MANUAL
FieldLogger
with 128k Memory
0141 0315-57 01. April 2009
B+B Thermo-Technik GmbH | Heinrich-Hertz-Str. 4 | D-78166 Donaueschingen
Technical changes reserved
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9.5
INSTALLATION
The logger has two terminal lines for input connections, power supply, backup power supply (VBAT), digital input and serial
communication.
INSTALLATION RECOMMENDATIONS
•
Input signal leads must be installed in grounded conduits and away from power or contactor wires.
•
Instruments must be powered only by an exclusive power supply.
•
Installing RC filters (47W and 100nF, serial) is strongly recommended at contactor coils or any other inductors.
•
System failure should always be taken into account when designing a control panel to avoid irreversible damage to equipment or
people. The ALM1 and ALM2 output relays, used as alarms, do not warrant total protection.
•
Wires section: minimum gauge 0.14 mm².
Electrical Connections – Inputs
Figure 6 - Thermocouples
Figure 7 – Pt100
Figure 8 – Current (4 to 20 mA)
Figure 9 – Voltage (0 to 50 mV)