Download Full Product Catalog - Durex Industries
Download Full Product Catalog - Durex Industries
Download Full Product Catalog - Durex Industries
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144<br />
RESISTANCE TEMPERATURE DETECTORS<br />
RTD ASSEMBLY TEMPERATURE RANGES<br />
STYLE: R1L, R2L,<br />
R3L & R4L<br />
STYLE: R1M, R2M,<br />
R3M & R4M<br />
STYLE: R1P, R2P,<br />
R3P & R4P<br />
CODE ELEMENT TYPE<br />
TEMPERATURE COEFFICIENT TOLERANCE AT 0 C<br />
WIRING DIAGRAMS<br />
R T<br />
2 Wire, Wheatstone Bridge<br />
R L 4<br />
R L 3<br />
R L 1<br />
R L 2<br />
R L 1<br />
R L 2<br />
R 2<br />
M<br />
R 1<br />
R 2<br />
4 Wire, Compensated<br />
Wheatstone Bridge<br />
M<br />
The maximum rated temperature for these four styles is 500° F. Typically they are<br />
constructed with Teflon leads and the lead end is protected with an epoxy seal. This epoxy<br />
seal provides a moisture resistant barrier.<br />
The maximum rated temperature for these next four styles is 900° F. They are constructed<br />
with high temperature fiberglass insulated conductors. The lead end is sealed and<br />
protected with a high temperature cement.<br />
The maximum rated temperature for these last four styles is 1200° F. Their construction<br />
features highly compacted magnesium oxide insulation. Nickel conductors provide for<br />
extended temperature ratings and harsh environments.<br />
Custom manufactured RTD assemblies are available for operating temperatures up to 1500° F. Please consult<br />
<strong>Durex</strong> engineering for specifications and construction details.<br />
A<br />
B<br />
C<br />
D<br />
E<br />
F<br />
G<br />
H<br />
J<br />
K<br />
100 ohm Platinum<br />
100 ohm Platinum<br />
100 ohm Platinum<br />
500 ohm Platinum<br />
1000 ohm Platinum<br />
2000 ohm Platinum<br />
100 ohm Platinum<br />
100 ohm Platinum<br />
120 ohm Nickel<br />
604 ohm Nickel Iron<br />
The meter reads R T + the two lead<br />
resistances, R L1 and R L2 .<br />
SUPPLY<br />
In this type R L3 and R L4 appear in<br />
one arm of the bridge. R L1 and R L2<br />
appear in the other. Errors are<br />
R L1+R L2- R L3-R L4.<br />
SUPPLY<br />
R T<br />
AVAILABLE RTD ELEMENTS<br />
3 Wire, Wheatstone Bridge<br />
R L 3<br />
R L 1<br />
R L 2<br />
.00385<br />
.00385<br />
.00385<br />
.00385<br />
.00385<br />
.00385<br />
.00392<br />
.00392<br />
.00672<br />
.00520<br />
One lead resistance is included<br />
in each of two arms of the bridge.<br />
The errors reduce to R L1 - R L2 .<br />
190 Detroit Street • Cary, Illinois 60013 • Phone: 847-639-5600 • Fax: 847-639-2199 • Web: www.durexindustries.com • TOLL FREE: 800-762-3468<br />
M<br />
4 Wire, Connected<br />
HIGH IMPEDANCE<br />
VOLTAGE MEASUREMENT<br />
Errors can be made negligible by<br />
having a very high input impedance<br />
amplifier.<br />
SUPPLY<br />
SUPPLY<br />
E<br />
5<br />
Internal Wiring Diagram<br />
F<br />
6<br />
A<br />
1<br />
2 Wire<br />
A<br />
1<br />
B<br />
2<br />
B<br />
2<br />
.1%<br />
.06%<br />
.03%<br />
.1%<br />
.1%<br />
.1%<br />
.1%<br />
.03%<br />
.5%<br />
.5%<br />
C<br />
3<br />
A<br />
1<br />
3 Wire<br />
C<br />
3<br />
A<br />
1<br />
B<br />
2<br />
B D<br />
2 4<br />
4 Wire Compensated 4 Wire Connected
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