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5.2 Measurement Type Wiring
The RMU1 can be wired in several different pre-defined configurations for single coupon, dual coupon, separate AC
and DC coupons, and bond monitoring. The diagrams in the following pages illustrate typical installations for each
measurement type. Each measurement type diagram contains a table indicating the six measurement points (Slots) that
are transmitted to the corView server.
Note that for pipe-to-soil measurements, as shown in the installation diagrams, the readings sent to corView will be
negative. Also note that the RMU1 measurement inputs must not be directly connected to mains AC power.
The following ranges apply to measured signals:
Potential:
+/-31VDC, 22VAC
Coupon Current: +/-6mADC, 4.25mAAC
+/-60mADC, 42.5mAAC Med Range
+/-200mADC, 140mAAC High Range
Bond Shunt:
+/-6mVDC, 4.25mVAC
+/-60mVDC, 42.5mVAC Med Range
+/-200mVDC, 140mVAC High Range
CP Coupon
Figure 7 Single Coupon Wiring Diagram (CP33)
MOBILTEX® DATA LTD.
Calgary, Alberta
www.corTalk.com
Low Range
Low Range
RMU1 Single Coupon
DATA
SLOT
1
Coupon DC Potential
2
Coupon AC Potential
3
Coupon Instant Disconnect DC Potential
4
Coupon AC Current Density
5
Coupon DC Protection Current
6
Depolarized Coupon DC Potential
Reference
Structure
Cell
TITLE: RMU1 Installation and Configuration Guide
DOCUMENT NO.:
RMU1-MAN-001
DESCRIPTION
COUPON DC V
COUPON AC V
COUPON INSTANT DISCONNECT DC V
COUPON CURRENT AC A/m2
COUPON CURRENT DC A/m2
COUPON DEPOLARIZED DC V
SHEET:
16 of 53
LCD ICONS
REV:
1.14
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