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Instruction Bulletin
Appendix D Rev. 2.5
May 2005
D-4 Appendices Rosemount Analytical Inc. A Division of Emerson Process Management
World Class 3000
REFERENCE PURGE
Analytical
NOTE: DIMENSIONS ARE IN INCHES WITH
MILLIMETERS IN PARENTHESES.
3
"BEBCO" PURGE WARNING NOTICE
SUPPLIED WITH BEBCO UNIT AND
TO BE INSTALLED ON MPS UNIT
AS SHOWN.
2
WITH ELECTRONICS DOOR CLOSED
TIGHTLY. SET AIR REGULATOR TO
0.25 IN. (65 PA) AS INDICATED ON
REFERENCE GAUGE.
1
CUSTOMER SUPPLIED 0.25 IN.
(6,4 MM) OD LINE.
5
USE KROY LABEL, BLACK ON CLEAR,
14 PT. CENTER LABELS UNDER
FITTING HOLES AT DISTANCE SHOWN.
4
TO BE CALLED OUT ON
SHOP ORDER.
6
CUSTOMER SUPPLIED INSTRUMENT
QUALITY COMPRESSED AIR SUPPLY
MUST BE EQUIPPED WITH A
TAMPER-PROOF REGULATOR SET
TO 5 PSIG (34,48 kPa) MAXIMUM.
ALARM NORMALLY CLOSED
ALARM NORMALLY OPEN
ALARM COMMON
6
1
2
5
4
1.00
(25,40)
1.00
(25,40)
WARNING NOTICE
3
(2 PLCS)
PARTS LIST
ITEM
01
02
03
04
NOTE
PART NAME
MPS ASSEMBLY
Z-PURGE UNIT
Z-PURGE UNIT
TUBE FITTING
DWG
AML
AML
DWG
DEFINER
SIZE - REFERENCE INFORMATION
GROUP NOTE
MAT'L CODE
PART NUMBER
OR REF DWG
3D39425GXX
1A98474H01
1A98474H02
771B870H05
GROUP
G01
A/R
1
2
G02
A/R
1
2
)
) W/O PRESSURE LOSS SWITCH
) W/ PRESSURE LOSS SWITCH
) 1/4" TUBE TO 1/4", S.S.
PARTS LIST UNITS: INCHES
NOTES:
DETAIL
SWITCH CONTACT RATING:
15A - 125, 250,480 VAC
1/8 HP 125 VAC
1/4 HP 250 VAC
CLASS 1, DIV. 1 AND 2 GR. C AND D
CSA, FM AND UL LISTED
ALARM SWITCHING
"A"
COM
NO
NC
DRILL AND
TAP THRU FOR
1/4" NPT (2 PLCS)
3.00
(76,20)
2.50
(63,50)
1.50
(38,10)
0.75
(19,05)
LEFT SIDE
VIEW LABEL
ORIENTATION
AND HOLE
PLACEMENT
BEBCO MODEL Z-PURGE
REAR VIEW
ENCLOSURE
PRESSURE
INDICATOR
0-125 PA
ATMOSPHERIC
REF VENT
REFERENCE
PRESSURE TO
DIFFERENTIAL
PRESSURE
SWITCH
(SEE DETAIL "A")
1/2" CONDUIT WIRING INLET
EXPLOSION PROOF PRESSURE
LOSS ALARM SWITCH
(USED ON G02 ONLY)
CALIBRATION
SCREW
VENTURI ORIFICE
REDUNDANT PRESSURE
CONTROL VALVE
SYSTEM
REGULATOR
SYSTEM
SUPPLY
37840016
Figure D-4. MPS with Z-Purge