Rice Lake Load Cells - Wiring for Hazardous Environments - Manual (Page 37)

34 Load Cell Wiring for Hazardous Environments
350 OHM BRIDGES ARE TYPICAL V
ALUES, BRIDGE RESIST
ANCE MA
Y BE = OR > 350 OHMS.
9. 700 OHM BRIDGES ARE TYPICAL V
ALUES, BRIDGE RESIST
ANCE MA
Y BE = OR > 700 OHMS.
8. INST
ALLA
TION SHALL BE IN ACCORDANCE WITH MANUF
ACTURER'S INSTRUCTIONS AND THE NA
TIONAL ELECTRICAL CODE (ANSI/NFP
A 70).
6. R. ST
AHL BARRIERS ARE MANUF
ACTURED A
T
150A NEW BOSTON ST
. WOBURN, MA. 01801.
A SUIT
ABLE JUNCTION OR SUMMING BOX.
7. SHT 6, 7, 8 & 9 REPRESENTS ST
AHL BARRIER SPECIFICA
TIONS.
12. EACH SHEET LISTS THE LOAD CELL MODEL NUMBERS TO WHICH IT APPLIES. 13. SEE SHEET 2 FOR NO BARRIER APPLICA
TION.
11. 10.
IN THE LOAD CELL EXCIT
A
T
ION CIRCUIT
.
REP
. IN USA : MTL INC., 8576 WELLINGTON ROAD, MANASSAS, V
A
. 22110.
SHOULD NOT USE OR GENERA
TE MORE THAN 250 VOL
TS RMS.
DUE TO THE SERIES RESIST
ANCE OF THE SAFETY BARRIERS
4. MTL BARRIERS ARE MANUF
ACTURED IN ENGLAND;
5. SHT 3, 4 & 5 REPRESENTS MTL BARRIER SPECIFICA
TIONS.
3. A REDUCTION OF THE LOAD CELL SIGNAL OUTPUT WILL OCCUR, 2. ELECTRICAL EQUIPMENT CONNECTED TO BARRIER INPUTS 1. DRAWING REVISIONS MUST BE APPROVED BY F
ACTOR
Y MUTUAL PRIOR TO RELEASE.
NOTE:
SCALE
TREA
TMENT
ANGLE 3 PLC 2 PLC
TOL.
DECIMAL
DRAWING TOLERANCES
TITLE
SHEET OF
DWG NO
THIS DRAWING AND ALL INFORMA
TION CONT
AINED HEREIN IS AND REMAINS
THE PROPER
TY OF RICE LAKE WEIGHING SYSTEMS INC. AND IS CONFIDENTIAL.
IT IS SUBMITTED AND MA
Y BE USED ONL
Y IN CONNECTION WITH RICE LAKE
WEIGHING SYSTEMS' PROPOSAL AND/OR ITS CUSTOMERS' ORDERS. IT SHALL NOT BE DISCLOSED TO OTHERS OR COPIED WITHOUT RICE LAKE WEIGHING SYSTEMS' SPECIFIC WRITTEN CONSENT AND SHALL BE IMMEDIA
TEL
Y RETURNED UPON REQUEST
.
REVISION
REVISIONS
REV
REFERENCE
INIT
DA
TE
ALL THREADS TO BE CLASS 2
UNLESS OTHER
WISE SPECIFIED
ALL DIMENSIONS APPLICABLE AFTER TREA
TMENT
UNLESS OTHER
WISE SPECIFIED
DO NOT SCALE
DRAWING
SURF
ACE
FINISH
MA
TERIAL
THIRD ANGLE PROJECTION
UNITS TO BE INCHES
FOR RL
WS
USE ONL
Y
RICE LAKE WEIGHING SYSTEMS
MFG.ENG.
DR.BY
APPROVED DES.ENG. APPROVED
CKD.
WIRING DIAGRAM
LOAD CELLS IN HAZARDOUS AREAS
53414
1:1
19
--- --- ---
---
SEE NOTES
NONE
C
SBD 10/28/99
0
ADDED MODEL #'S RL30000W AND RL35023SS TO SHT'S 2, 5, 6, AND 8. ADDED MODEL #'S RL1521 AND RL35023 TO SHT'S 2, 5, 6, AND 8. ADDED MODEL #RL75016SS TO SHT'S 2, 3, 4, 7, AND 9.
ENG. RELEASE; MODIFIED LOAD CELL MODEL NUMBERS
B
3/6/00
C
10/3/00
SBD DJS