nVision Operation Manual • Page 21
Connecting.your.RTD.to.the.RTD100.Module
Your nVision RTD100 module has been shipped with an IP67 rated, M8 connector (P/N: 3953). The
terminal block based connector allows you to attach your RTD sensor for 2-, 3-, or 4-wire connec-
tions. Care must be taken to install the RTD connector shell properly to ensure the robust IP67
sealing.
1 RTD sensor element connection requirements:
a 100Ω Platinum RTD with:
i TCR of 385, 3926, or 3911
ii Cable diameter of 3.5 to 5.0 mm [0.14 to 0.2 inches] with smooth, continuous covering
adequate for IP67 sealing.
iii Stranded conductor cross section of 0.14mm
2
to 0.5mm
2
[0.0002 to 0.0008 in
2
].
2 For your ease in sourcing this connector, the following sources of
supply may be used:
a Phoenix Contact:
i Order Number: 1501265, or Part Number: SACC-M8MS-4CON-M-SM
b Binder:
i Part Number 99-3383-100-04
3 RTD sensor element cable preparation:
a Strip approximately 12.0 mm [0.5 in] outer insulation from RTD cable.
b Strip the individual RTD element sense wires approximately 4.0 mm [0.16 in].
c Install 3 piece sealing system (see Figure 1 below) onto the cable assembly. Take care to place
parts in proper order and orientation.
d Install your RTD sense element wires with the following wiring, and tighten set screw as
required in the following manner:
2 wire: 3 wire: 4 wire:
e. Conrm correct orientation of element wires in connected state.
4. Lubricate o-ring and thread system (See Figure 1) with Dow 111 or equivalent in location near
terminal block as required to prevent water intrusion when connector shell is installed. Thread
shell in place until tight.
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