Rice Lake Load Cells - Wiring for Hazardous Environments - Manual (Page 22)

Control Drawing 66020 19
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
66020
1:2
66
--- --- ---
---
---
NONE
NEW
SLJ 9/15/00
DRAWING REVISIONS MUST BE APPROVED BY F
ACTOR
Y MUTUAL PRIOR TO RELEASE.
5
5
-
-
+
+
OUTPUT SIGNAL, mV
-SEN +SEN
(RECOMMENDED)
REMOTE SENSE
LOAD CELL
- +
MIN.
LOAD CELL
15
Imax. = 50 mA Imax. = 50 mA Imax. = 50 mA Imax. = 50 mA Imax. = 179 mA
Vmax. = -16V Vmax. = +16V Vmax. = -16V Vmax. = +16V Vmax. = +12V
NEGA
TIVE SIGNAL BARRIER:
POSITIVE SIGNAL BARRIER: NEGA
TIVE SENSE BARRIER:
POSITIVE SENSE BARRIER: POSITIVE EXCIT
A
TION BARRIER:
EXCIT
A
TION SUPPL
Y
INSTRUMENT
A
TION
(+SIGNAL) (-SIGNAL) (-SENSE) (+SENSE)
(-EXCIT
A
TION)
(+EXCIT
A T
ION)
CLASS III, DIV 1
BOX
BARRIER
OPTIONAL
CLASS I,II, DIV 1, GROUPS A-G
INTRINSIC SAFETY INST
ALLA
TION PLAN
(ENTITY FM APPROVED)
87.5 OHMS
NON - HAZARDOUS LOCA
TION
HAZARDOUS LOCA
TION
+EXC -EXC -SIG +SIG
JUNCTION OPTIONAL
BOX
0