Brooks Instrument 3750 User Manual
Installation and Operation Manual
X-VA-MT3750C-eng
Part Number: 541B063AAG
April, 2014
Brooks® Ar-MiteTM MT3750C
Ar-MiteTM Low Flow Armored Flowmeter
5
Ar-MiteTM Model MT3750
Metal Tube Flowmeter
Ar-MiteTM Model MT3750
Metal Tube Flowmeter
with Transmitter or Inductive Alarm
Brooks® Ar-MiteTM MT3750C
Installation and Operation Manual
X-VA-MT3750C-eng
Par Number: 541B063AAG
April, 2014
Installation and Operation Manual
X-VA-MT3750C-eng
Part Number: 541B063AAG
April, 2014
Dear Customer ,
We appreciate this opportunity to service your flow measurement and control requirements with a Brooks
Instrument device. Every day, flow customers all over the world turn to Brooks Instrument for solutions to their
gas and liquid low-flow applications. Brooks provides an array of flow measurement and control products for
various industries from biopharmaceuticals, oil and gas, fuel cell research and chemicals, to medical devices,
analytical instrumentation, semiconductor manufacturing, and more.
The Brooks product you have just received is of the highest quality available, offering superior performance,
reliability and value to the user. It is designed with the ever changing process conditions, accuracy requirements
and hostile process environments in mind to provide you with a lifetime of dependable service.
We recommend that you read this manual in its entirety. Should you require any additional information concerning
Brooks products and services, please contact your local Brooks Sales and Service Office listed on the back cover
of this manual or visit www.BrooksInstrument.com
Y ours sincerely ,
Brooks Instrument
Brooks® Ar-MiteTM MT3750C
Brooks® Ar-MiteTM MT3750C
Installation and Operation Manual
X-VA-MT3750C-eng
Par Number: 541B063AAG
April, 2014
THIS PAGE WAS
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Installation and Operation Manual
X-VA-MT3750C-eng
Part Number: 541B063AAG
April, 2014
Paragraph Page
Number Number
Introduction Section 1
1-1 Description ........................................................................................................................................1-1
1-2 Specifications ....................................................................................................................................1-1
1-3 Optional Equipment ...........................................................................................................................1-4
Installation Section 2
2-1 General..............................................................................................................................................2-1
2-2 Receipt of Equipment ........................................................................................................................ 2-1
2-3 Recommended S torage Practice.......................................................................................................2-1
2-4 Return Shipment ...............................................................................................................................2-2
2-5 Transit Precautions ...........................................................................................................................2-2
2-6 Removal From Storage .....................................................................................................................2-2
2-7 Installation of Flowmeter ...................................................................................................................2-3
2-8 Installation of Inductive Alarm............................................................................................................2-3
2-9 Installation of Reed Switch Alarm......................................................................................................2-4
2-10 Installation of Transmitter ..................................................................................................................2-5
Brooks® Ar-MiteTM MT3750C
Contents
Operation Section 3
3-1 Operating Procedure .........................................................................................................................3-1
3-2 Operation of Inductive Alarm .............................................................................................................3-1
3-3 Operation of Transmitter ...................................................................................................................3-1
3-4 Operation of Reed Switch Alarm .......................................................................................................3-2
Maintenance Section 4
4-1 General..............................................................................................................................................4-1
4-2 Service Information ...........................................................................................................................4-1
4-3 On Site Adjustment/Calibration .........................................................................................................4-1
Parts List Section 5
5-1 General..............................................................................................................................................5-1
Essential Instructions Section A
Essential Instructions ................................................................................................................................A-1
Warranty, Local Sales/Service Contact Information....................................................................... Back Cover
i
Contents
Brooks® Ar-MiteTM MT3750C
Figures
Figure Page
Number Number
1-1 Model MT3750C with T ransmitter / Inductive Alarm..........................................................................1-5
1-2 Reed Switch Wiring Diagram ............................................................................................................ 1-6
1-3 Model MT3750C with Reed Switch Alarm .........................................................................................1-7
1-4 Power Supply vs. Maximum Load Resistance .................................................................................1-10
1-5 Transmitter Wiring Diagram .............................................................................................................1-10
1-6 Dimensions for MT3750C Flanged and Threaded Met al Tube Flowmeter with Indicator ................. 1-11
1-7 Dimensions for MT3750C Flanged and Threaded
Connections with Transmitter or Inductive Alarm .............................................................................1-12
1-8 Dimensions for MT3750C Flanged and Threaded Connections with Reed Switch Alarm................1-13
1-9 Dimensions for MT3750C Panel Mounting.......................................................................................1-14
2-1 Typical Installation .............................................................................................................................2-3
2-2 Inductive Switch Wiring Diagram.......................................................................................................2-4
2-3 Inductive Switch Wiring .....................................................................................................................2-6
2-4 Reed Switch Alarm Wiring Using IS Barrier ...................................................................................... 2-7
2-5 Reed Switch Alarm Inst allation using P & F Relay Unit ..................................................................... 2-8
2-6 Reed Switch Alarm Wiring Using P & F Relay Unit ...........................................................................2-8
2-7 Transmitter Wiring Diagram for I.S. Systems....................................................................................2-9
2-8 Transmitter Wiring Diagram for XP Systems....................................................................................2-10
2-9 Transmitter Wiring Diagram .............................................................................................................2-11
3-1 Reed Switch Alarm............................................................................................................................3-4
5-1 Model MT3750 Exploded View..........................................................................................................5-2
Installation and Operation Manual
X-VA-MT3750C-eng
Part Number: 541B063AAG
April, 2014
Tables
Table Page
Number Number
1-1 Capacities..........................................................................................................................................1-3
1-2 Pressure Ratings in PSIG (Bar G).....................................................................................................1-3
1-3 Fluid Temperature at Ambient Temperature ......................................................................................1-3
3-1 Interior Label MT3750 Ar-Mite Alarm.................................................................................................3-3
5-1 Model MT3750 Recommended Spare Parts List (Refer to Figure 5-1) ............................................. 5-3
5-2 Model MT3750 Indicator, Alarm and Transmitter Sp are Parts List ....................................................5-4
ii
Installation and Operation Manual
X-VA-MT3750C-eng
Part Number: 541B063AAG
April, 2014
1-1 Description
1-2 Specifications
Section 1 Introduction
Brooks® Ar-MiteTM MT3750C
The Brooks® Ar-MiteTM is a reliable, low flow metal tube flowmeter with
316L stainless steel wetted parts. The magnetically coupled indicator
provides a highly reliable method of indication. This model is a practical
and economical approach to low flow rate indication for high pressure and
difficult to handle fluids. Optional accessories include 4-20 mA output,
Needle Valve, Flow Controllers and Alarms.
Performance Specifications
Flow
Liquids up to 100 l/h or 26 GPH (Water equiv.)
Gases up to 3.1 m3n/h or 120 SCFH (Air equiv.)
(See Table 1-1 for more information)
Accuracy
±5% Full Scale, Class 4 to VDE/VDI 3513,
Optional ±3% Full Scale, Class 2.5 to VDE/VDI 3513
Repeatability
1% full scale
Pressure Ratings
Maximum fluid pressure:
All non-flanged meters: 1500 psig (100 bar)
Flange connections: (Refer to Table 1-2)
Optional maximum operating pressure: 4000 psig
(276 bar) (no valve, 1/4" NPT option only)
Scales
Length - 52 mm, nominal
Types - Detachable aluminum direct reading scales in engineering and
reference units
Operating Fluid T emperature Limit s
Indicator: -20°F(-29°C) to 400°F (204°C)
Alarm: -20°F(-29°C) 250°F (120°C)
Transmitter: -20°F(-29°C) 180°F (82°C)
Ambient T emperature:
Indicator: -58°F(-50°C) to 150°F(65°C)
Alarm: -20°F(-29°C) to 150°F(65°C)
Transmitter: -20°F(-29°C) to 150°F(65°C)
(Refer to Table 1-3)
1-1
Section 1 Introduction
Brooks® Ar-MiteTM MT3750C
Installation and Operation Manual
X-VA-MT3750C-eng
Part Number: 541B063AAG
April, 2014
Materials of Construction:
Process Wetted
316L stainless steel (1.4404), Inconel® 625,
Titanium Grade II (Size 0 float only)
Optional Monel® K-500 (sizes 1-6 only)
O-rings
®
Standard: Viton
Fluoroelastomers;
Option: Buna-N, Ethylene Proplylene, Kalrez®,
PTFE Teflon
®
(without valve)
Enclosure Ratings
All Housings Epoxy painted die cast aluminum
Indicator Housing: Type 4X/ IP64
Transmitter Enclosure: Type 4X/ IP66/ IP67
Reed Switch Eclosure: Type 4X
Inductive Alarm Enclosure: Type 4X/ IP65
Connections
Fittings Horizontal
1/4" NPT Female Threaded
1/4" Tube Compression
6 mm Tube Compression
1/4" ISO RC
(Refer to Figures 1-6 thru 1-9)
Flanges
EN1092 DN15 to DN25 PN40 RF
ANSI B16.5 1/2", 3/4" or 1" - 150#, 300#, 600# RF
Vertical Inlet and Outlet Only
(Refer to Figures 1-6 thru 1-9)
1-2
Pressure Equipment Directive (PED) 97/23/EC
Flowmeters metnioned in this instruction manual are Sound Engineering
Practice (SEP).
• Pressurized materials are manufactured in compliance with material
standard ASTM.
• Applied welding method is in accordance with ASME IX / EN 287-288.
• Flowmeters are designed in accordance with ASME B31.3 and ASME
B31.1
• Admissable maximum temperatures and pressure are stated further in
this manual.
Installation and Operation Manual
X-VA-MT3750C-eng
Part Number: 541B063AAG
April, 2014
Table 1-1 Capacities
Meter Size
Flow Range
Section 1 Introduction
Brooks® Ar-MiteTM MT3750C
Viscosity
Limit
Pressure Drop
Water
Air
(1,2)
GPH l/h In/h SCFH m3n/h CP mBar Inches WC
0 0.021-0.21 0.08-0.8 3.9-39 0.15-1.5 - 5 12 4.8
1 0.034-0.34 0.13-1.3 5.6-56 0.21-2.1 - 10 12 4.8
2 0.095-0.95 0.36-3.6 13.0-120 0.5-4.9 - 20 12 4.8
3 0.29-2.8 1.0-10 - 1.2-12 0.033-0.33 35 12 4.8
4 0.55-5.5 2.1-21 - 2.5-23 0.063-0.62 70 32 12.8
5 1.1-11 4.2-42 - 5.4-53 0.15-1.3 100 38 15.3
6 2.8-26 11-100 - 12-110 0.31-3.1 130 44 17.7
Notes:
1. Air flows in scfm converted to 70oF and 14.7 psia when the meter is operated at 70oF and 14.7 psia.
2. Air flows in m
Table 1-2 Pressure Ratings in PSIG (Bar G)
3
/h (converted to normal conditions: 0oC and 1.013 bar abs) when the meter is operated at 1.013 bar abs and 20oC.
n
-20°F TO 100°F
FLANGE RATING
-29°C TO 39°C 200°F 93°C 300°F 149°C 400°F 204°C
150# 275 (19) 240 (16) 215 (15) 195 (13)
300# 720 (49.5) 620 (43) 560 (39) 515 (35)
600# 1440 (99) 1240 (85) 1120 (77) 1030 (71)
Table 1-3 Fluid Temperature at Ambient Temperature
MAX. AMBIENT MAX. FLUID TEMPERATURE PER OPTION
TEMPERATURE INDICATOR ALARM TRANSMITTER
° F ° C ° F ° C ° F ° C ° F ° C
104 40 400 204 250 120 180 82
110 43 390 199 250 120 175 79
120 49 380 193 250 120 170 76
130 54 370 187 250 120 165 74
140 60 360 182 240 115 155 68
150 65 350 176 235 112 150 65
Notes:
1. At ambient temperatures less than 104°F (40°C), the maximum fluid temperature does not increase.
2. Ambient temperature is limited to 150°F (65°C) maximum.
1-3
Section 1 Introduction
Brooks® Ar-MiteTM MT3750C
1-3 Optional Equipment
Installation and Operation Manual
X-VA-MT3750C-eng
Part Number: 541B063AAG
April, 2014
Standard Needle Valves
The standard needle or cartridge valves can be supplied integrally
mounted to the inlet fitting of the instrument. The optional NRS
TM
needle
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 IVTM, CART valves or NRS valves.
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 8 Vdc (Max. 15.5 Vdc)
Current consumption active area clear: > 3 mA
Current consumption active area obscured: < 1 mA
Self inductance 29 μH
Self capacitance 20 nF
Max Temp: 158°F(70°C)
Inductive Alarm
Electrical Classification
Intrinsically Safe:
ATEX: KEMA 02ATEX1126
II 2 G Ex ia IIC T6
per EN 60079-0: 2006 EN 60079-11: 2007
EN 61241-0: 2006 EN 61241-11: 2006
II 2 D Ex iaD 21 IP65 T 75OC
IECEx KEM 09.0046
Ex ia IIC T6 Gb/Ex ia IIIC T 75OC Db IP65
per IEC 60079-0: 2007-10 IEC 60079-11: 2006
IEC 61241-11: 2005
1-4
CSA: (USA and Canada) 1379260
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
April, 2014
Section 1 Introduction
Brooks® Ar-MiteTM MT3750C
Figure 1-1 Model MT3750C with Transmitter / Inductive Alarm
NEPSI: (China) GYJ11.1639
Ex ia IIC T6 Gb
per GB3836.1-2010; GB3836.4:2010
GOST-R 0813793
Approval POCC NL.06.B01220
Non Incendive:
ATEX: KEMA 02ATEX1127
II 3 GD T 75oC
EEx nA II T6
per EN60079-15: 2003;
EN50281-1-1-1: 1998 +A1
CSA: (USA and Canada) 1379260
NI, Class I, II, III, Div. 2, Groups A thru G, T6
per CSA -213:1987 ; UL1604:1995
Class I, Zone 2 AEx nA II, T6
per ANSI/ UL 2279: 1996
Ex nA II
per CSA E79-0:2002; CSA E79-15:2002
NEPSI: (China) GYJ13.1315
Ex nA IIC T6 Gc
per GB3836.1:2010; GB3836.8:2003
GOST-R 0813793
Approval POCC NL.06.B01220
1-5
Section 1 Introduction
Brooks® Ar-MiteTM MT3750C
Figure 1-2 Reed Switch Wiring Diagram
Installation and Operation Manual
X-VA-MT3750C-eng
Part Number: 541B063AAG
April, 2014
Reed Switch Alarm
Two reed switches are installed in the alarm housing to provide signaling or
switching functions when a preset flow value has been reached. The reed
switches provide high, low or dual setpoints and latched output over the full
range. The switches are normally adjusted to the desired flow range in the
factory. Modifications to the switch settings can be made in the field, refer
to Section 3-4. Minimum setting distance between two switches is
approximately 40% of the scale. (Refer to Figures 1-2 and 1-3)
Data Reed Switch
Maximum Voltage* 175 Vdc, 124 Vac
Maximum Current* 250 mA
Maximum Contact Rating* 3 Watts
(Maximum Switch Specifications)
Electrical Classification
Non Incendive:
Maximum Voltage 30 Vdc
Maximum Current 100 mA
Maximum Contact Rating 3 Watts
CSA (US and Canada)
NI Class I, Div. 2, Groups A, B, C and D:
Class II Groups F and G, T6
per CSA-213: 1987; UL 1604; 1995
Intrinsic Safety:
Entity parameters
Vmax = Ui = 30 Vdc, Imax = Ii = 100 mA, Ci = 0, Li = 0
1-6
CSA: (US and Canada)
IS Class I, II, III, Div. 1, Groups A thru G, T6
per CSA-157:1992; UL 913:2002
Installation and Operation Manual
X-VA-MT3750C-eng
Part Number: 541B063AAG
April, 2014
Section 1 Introduction
Brooks® Ar-MiteTM MT3750C
Figure 1-3 Model MT3750C with Reed Switch Alarm
Transmitter: 3750
The transmitter provides accurate magnet angle detection and conversion
to a 4 - 20 mA industry standard output signal, based on the position of a
float assembly in the flowmeter. This rugged, compact, microprocessordriven device is capable of providing accurate flow information to your
external support systems. The patented magnetic sensor with automatic
gain control enables an extremely high dynamic capture range without
sacrificing accuracy. (Refer to Figures 1-1, 1-4 and 1-5)
Data Certifications:
E.M.C. Directive 2004/108/EC according to EN 61326-1: 2006
Flame-proof/ Explosion-proof:
Power Supply 28 Vdc, 4-20 mA
Ambient Temperature: -25oC < Tamb < 65oC
Flameproof/ Explosion-proof
ATEX: KEMA 01ATEX2174
II 2 G Ex d IIC T6
II 2 D Ex tD A 21 IP66 T 85oC
per EN 60079-0: 2006; EN 60079-1:
2004; EN61241-0: 2006;
EN61241: 2004
UL: United States and Canada Ul Listed, E73889
XP Class I, Div.1, Groups A, B, C, and D, T6
DIP Class II, Div. 1, Groups E, F, and G
per UL 1203: 2000; CSA-30: 1986
Class I, Zone 1 AEx d IIC T6
per UL 2279: 1996
Ex d IIC T6
per CSA E79-0:2002; CSA E79-1:2002
NEPSI: (China) GYJ11.1638X
Ex d IIC T6 Gb
per GB3836.1-2010; GB3836.2-2010
IECEx: KEM 06.0049
EX d IIC T6
per IEC 60079-0: 2004; IEC 60079-1: 2003
GOST-R 0813793
Approval POCC NL.06.B01220
1-7
Section 1 Introduction
Brooks® Ar-MiteTM MT3750C
Installation and Operation Manual
X-VA-MT3750C-eng
Part Number: 541B063AAG
April, 2014
Intrinsic Safety:
Functional parameters
Power Supply 8-28 Vdc, Imax= 22 mA
Entity Parameters:
Ui = 30 V DC, Ii = 100 mA Pi = 750 mW
Ci = 0uF Li = 1.8 mH
Ambient Temperature: -30oC < Tamb < 65oC
ATEX: KEMA 01ATEX1033
II 2 G Ex ia IIC T6
II 2 D Ex iaD 21 IP66/IP67 T70°C
II 2 D Ex tD A21 IP66/IP67 T70°C
per EN 60079-0: 2006 EN 60079-11: 2007
EN 61241-0: 2006 EN 61241-11: 2006
CSA: (US and Canada)
IS Class I, II, III, Div.1, Groups A, thru G, T6
per UL913:2002; CSA -157:1992
Class I, Zone 1 AEx ia IIC T6
per UL 2279:1996
Ex ia IIC T6
per CSA E79-0:2002; CSA E79-11: 2002
NEPSI: (China) GYJ11.1637
Ex ia IIC T6 Gb Ex iaD 21 T 70°C
per GB 3836.1/4-2010, IEC 61241-0:2004, GB 12476.4-2010
IECEx: KEM 06.0037
EX ia IIC T6
per IEC 60079-0: 2004; IEC 60079-11:1999
GOST-R 0813793
Approval POCC NL.06.B01220
1-8
Installation and Operation Manual
X-VA-MT3750C-eng
Part Number: 541B063AAG
April, 2014
Non Incendive
Power Supply 8-28 Vdc, Imax= 22 mA
Ambient Temperature: -30
o
C < Tamb < 65oC
ATEX: KEMA 01ATEX1035
II 3 GD T 70°C
EEx nA II T6 IP66/67
per EN 60079-15: 2003; EN 50281-1: 1998
CSA: (US and Canada)
NI Class I, Div.2, Grps A, B, C, and D; Class II
Grps F and G, T6
per UL 1604: 1995; CSA-213: 1987
Class I, Zone 1 AEx nA II T6
per UL 2279: 1996
Ex nA II T6
per CSA E79-0:2002; CSA E79-15:2002
Section 1 Introduction
Brooks® Ar-MiteTM MT3750C
IECEx: KEM 06.0037
Ex nA II T6
per IEC 60079-0: 2004; IEC 60079-15: 2005
GOST-R 0813793
Approval POCC NL.06.B01220
1-9
Section 1 Introduction
Brooks® Ar-MiteTM MT3750C
Figure 1-4 Power Supply vs. Maximum Load Resistance
Installation and Operation Manual
X-VA-MT3750C-eng
Part Number: 541B063AAG
April, 2014
Figure 1-5 Transmitter Wiring Diagram
1-10
Flow Controllers
Flow controllers can be supplied integrally mounted to the inlet or outlet of
the instrument. For the flow controller's complete instruction manual go to
our website: BrooksInstrument.com, select documentation, Precision
Valves and Flow Controllers, FC8800, or FC8900.
Material certification for pressure containing
Tube and fittings according to EN10204 Level 3.1
Valve parts and plugs are according to EN10204 Level 2.2
Installation and Operation Manual
X-VA-MT3750C-eng
Part Number: 541B063AAG
April, 2014
Section 1 Introduction
Brooks® Ar-MiteTM MT3750C
Figure 1-6 Dimensions for MT3750C Flanged and Threaded Metal Tube Flowmeter with Indicator
MM
[ INCH ]
1-11
Section 1 Introduction
Brooks® Ar-MiteTM MT3750C
Installation and Operation Manual
X-VA-MT3750C-eng
Part Number: 541B063AAG
April, 2014
1-12
Figure 1-7 Dimensions for MT3750C Flanged and Threaded Connections with Transmitter or Inductive Alarm
MM
[ INCH ]
Installation and Operation Manual
X-VA-MT3750C-eng
Part Number: 541B063AAG
April, 2014
Section 1 Introduction
Brooks® Ar-MiteTM MT3750C
Figure 1-8 Dimensions for MT3750C Flanged and Threaded Connections with Reed Switch Alarm
INCH
[ MM ]
1-13
Section 1 Introduction
Brooks® Ar-MiteTM MT3750C
Installation and Operation Manual
X-VA-MT3750C-eng
Part Number: 541B063AAG
April, 2014
Figure 1-9 Dimensions for MT 3750C Panel Mounting
1-14
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