FloBoss 407 Instruction Manual
Rev 5/00 B-11
B.4.1 MVS Lightning Protection
To safeguard against lightning strikes, install surge suppression devices. The following commercially
available lightning protection modules have been found to meet requirements:
Model Number Purpose
LPC 10643 - 485 Protects the communication pair (A and B terminals)
LPC 10643 - 1 Protects the power and ground pair (“+” and “-” terminals)
These units are available from:
Lightning Protection Corporation
PO Box 6086
Santa Barbara, CA 93160
Telephone: 805-967-4577
B.4.2 RTD Wiring
For an MVS101, connect the “T1”, “T2” and “T3” screw terminals in the electronics head to a 3-wire
or 4-wire RTD element (100-ohm platinum with alpha of 0.00385), which is typically installed in a
thermowell in the pipe near the orifice (see Figure B-11). Connect white wire(s) to T1, and connect red
wires to T2 and T3. If needed, the RTD wires may be extended up to 50 feet using equal lengths of
wire (18 AWG recommended).
Figure B-11. Typical RTD Installation for MVS101
RTD in
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