Optional Equipment - Brooks Instrument Ar-Mite 3750 Manual De Instalación Y Operación

Section 1 Introduction
Brooks Ar-Mite
®

1-3 Optional Equipment

1-4
MT 3750C
TM
Standard Needle Valves
The standard needle or cartridge valves can be supplied integrally
mounted to the inlet fitting of the instrument. The optional NRS
valve, also integrally mounted to the inlet fitting, provides a greater number
of turns affording precision control. For more details on the needle or
cartridge valves go to our website: BrooksInstrument.com,
select Documentation,Precision Valves and Flow Controllers,
Brooks-Line IV
Limit Switches
Inductive Alarm Switch
One or two electronic limit switches type SJ2-N can be installed in the
indicator housing to allow initiation of signaling or switching functions on a
preset flow value being reached. The SJ2-N limit switch operates as a slot
initiator that is inductively actuated by a cam mounted to the pointer. Any
flow value can be used for setting the limit value by sliding the switch along
the slot in the mounting plate for the initiators. Minimum setting distance
between two limit switches is approximately 50% of the scale range.
(Refer to Figure 1-1)
Power supply
Current consumption
Current consumption
Self inductance
Self capacitance
Max Temp:
Electrical classification
Intrinsically Safe:
IECEx KEM 09.0046 X
CSA: (USA and Canada) 1379260
, CART valves or NRS valves.
TM
8 Vdc (Max. 15.5 Vdc)
active area clear: > 3 mA
active area obscured: < 1 mA
29 μH
20 nF
KEMA 02ATEX1126 X
II 2 G Ex ia IIC T6
II 2 D Ex iaD 21 IP65 T 75
per EN 60079-0: 2004 EN 60079-11: 2007
EN 61241-0: 2004 EN 61241-11: 2005
Ex ia IIC T6 Gb / Ex ia IIIC T 75
per IEC 60079-0: 2006 IEC 60079-11: 2007
IEC 61241-0: 2006 IEC 61241-11: 2006
Class I, II, III, Div. 1, Groups A thru G, T6
per CSA -157:1992 ; UL913:2002
Class I, Zone 0, Zone 1 AEx ia IIC, T6
per ANSI/ UL 2279: 1996
Ex ia IIC
per CSA E79-0:2002; CSA E79-11:2002
Installation and Operation Manual
X-VA-MT3750C-eng
Part Number: 541B063AAG
158°F(70°C)
C
o
o C Db IP65
February, 2011
needle
TM