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MST2000 Loop PoweredMultivariable SMARTFLOW� Transmitter
Brandt Instruments’ MST2000 Series Loop Powered
Multivariable SMARTFLOW™ Transmitter sets new
standards for draft range Differential Pressure / Mass Flow
measurement of Air and Gas Flows. Combining Brandt’s
twenty plus years of experience in industrial process control
with state of the art digital signal processing technology, the
MST2000 is the most versatile, reliable, cost-effective and
simplest to operate loop powered multivariable transmitter
in the industry.
The MST2000 is a HART®
compatible, loop powered (two
wire ) device available in either a compact, NEMA 1 config-
uration for wall or panel mounting or a rugged fiberglass
NEMA 4X enclosure for hostile environments. With a turn-
down capability of 10:1 the available draft ranges can be
turned as low as 0.01 Inches W.C. full scale. Fully program-
mable and user friendly, the MST2000 is capable of produc-
ing and displaying signals for Differential Pressure (Inches
of Water Column) or for Flow (ACFM, SCFM, Lb/Hr).
Optional isolated 4-20 mA inputs are available for Absolute
Pressure, External Temperature and a second Differential
Pressure Transmitter. A HART®
Communications Module
and Digital I/O Module are also available. All the optional
modules can be installed in the field by the end user.
MST2000 Standard Features
�High Performance at Ultra Low Spans: Standard spans from0.10 to 50 Inches Water Column are available (custom andcompound ranges are also possible) with a total accuracy of0.15% of Span.
�Thermal Compensated Output: Each MST2000 has anonboard temperature sensor and is thermally compensated atthe factory to eliminate thermal effects.
�Password Protection: The MST2000 provides for passwordsecurity so that modifications to program variables can only bemade by authorized personnel.
�Adjustable Damping: The standard time constant is 500 mSecbut is user programmable from 0.5 to 5 seconds in 0.5 secondintervals.
�LCD Display and Integral Keypad: A large, high contrast,easy to read LCD display and integral keypad allow the user toeffortlessly program the MST2000 for optimal process condi-tions.
�Programmable Alarms: User selectable transmitter fault con-ditions can be programmed to set the 4-20 mA output to a low3.9 mA or high 21.0 mA state. User can also select HI/LO pro-cess conditions to control the optional digital outputs.
�RTD Input: A non-Isolated 4 wire RTD input connection is sup-plied for external temperature input.
�Integral Test Jack: Allows the user to monitor the mA output ofthe MST2000 without disconnecting the loop.
�Programmable Constants: When external temperature andabsolute pressure signals are unavailable, these variables canbe programmed in as constants, allowing the end user to selectan output signal which will represent ACFM, SCFM or Lb/Hr.Without these constants, or external inputs, only the D.P. will bea true signal.
MST2000 Isolated Input Modules
The MST2000 can be optionally configured with up to
three (3) Isolated 4-20 mA input modules for true mass
flow measurement. The input range for each input mod-
ule is software rangeable by the end user. Any combina-
tion of the three can be mounted at the factory or field
mounted by the user to upgrade process capabilities.
�Temperature Input Option: Accepts a 4-20 mA input froman external temperature transmitter.
�Absolute Pressure Input Option: Accepts a 4-20 mA inputfrom an external absolute pressure transmitter. An optionalintegral absolute pressure transmitter can be mounted in theMST2400 enclosure.
�External Differential Pressure Input Option: Accepts a4-20 mA input from an external differential pressure transmit-ter. A second differential input can be used to extend theavailable range to provide up to 2% flow rate accuracy over a25:1 flow range.
MST2000 Digital I/O Module
The MST2000 can be optionally configured with (1) one
digital input and (2) two digital outputs. This option is ca-
pable of either being installed at the factory or in the field.
�Digital Input: Accepts external signal to trigger events, suchas a blowdown sequence. The MST2000 will hold the lastoutput signal throughout the duration of the event.
�Digital Outputs: For control of external devices (AutoZeroValve, High Pressure Blowdown Systems, Alarm Circuits,etc.).
HART® Communications Module
An optional HART®
Communication Module can be in-
stalled to provide industry standard HART®
access to the
MST2000. This option can be installed at the factory or in
the field.
MST2000 Loop Powered Multivariable SMARTFLOW� Transmitter
MST2400: NEMA 4X Enclosure
Dimensions
MST2400: NEMA 4X Fiberglass Enclosure
MST2100: NEMA 1 Enlcosure
0.25 Inch Dia.Mounting Holes (4X)
Recessed Captive Screws
Window
Electrical ConnectionsLocated on MST2000
1/2" Conduit Connection
9.688 Inches
246.1 mm
7.688 Inches
195.3 mm
1/4"NPTFProcess Connections
1/8"NPTFProcess Connections
Electrical Connections
Electrical ConnectionsTest Jacks
9.188 Inches
233.4mm
Bottom View
Top View
Front View
OutputSignal
HI LOW
11.188 Inches284.2 mm
6.125 Inches
155.6 mm
Optional 2.5" Pipe Mount
Side ViewWith Optional 2.5" Pipe Mount
2.33 Inches
59.2 mm
7.0 Inches177.8 mm
6.5 Inches165.1 mm
6.25 Inches
158.8 mm
6.75 Inches
171.5 mm
Top ViewSide View
Bottom View
0.25 Inch (6.35mm) Dia.Mounting Holes (4X)
LCD Display &Integral Keypad
Status Light & Resets forIsolated Input Options
RTD-LOOP+ SEN-SEN+RTD+LOOP- +EXTIN 3-+EXTIN 2-+EXTIN 1- + DO 1-+ DI 1 - + DO 2 - GNDRX/TX+ RX/TX-
MST2000 Multivariable SMARTFLOW TransmitterTM
RESET
MODE INC.
EDIT DEC.
BlowdownAlarm
Auto ZeroRun
RESET RESET
ABS. PRES.
STATUS STATUS STATUS
RESET
EXT. TEMP. EXT. DP
Brandt Instruments, Inc. Fuquay, North Carolina USA� �
0.250INWC-
RTDSENSENRTDLOOP EXTIN 3EXTIN 2EXTIN 1 DO 1DI 1 DO 2 RX/TX+ + + + + + + + + +
_ _ _ _ _ _ _ _ _ _
TE
ST
_
+Brandt Instruments, Inc., Fuquay, North Carolina 27526 USA (919) 552-9011 www.brandtinstruments.com� � �
Model: MST2111002S1P 4-20mA Loop PoweredSerial Number: 2002001 Range: 0 to 0.25 Inches W.C
Abs.Prs Temp. ExtDP
RTD-LOOP+ SEN-SEN+RTD+LOOP- +EXTIN 3-+EXTIN 2-+EXTIN 1- + DO 1-+ DI 1 - + DO 2 - GNDRX/TX+ RX/TX-
MST2000 Multivariable SMARTFLOW TransmitterTM
RESET
MODE INC.
EDIT DEC.
BlowdownAlarm
Auto ZeroRun
RESET RESET
ABS. PRES.
STATUS STATUS STATUS
RESET
EXT. TEMP. EXT. DP
Brandt Instruments, Inc. Fuquay, North Carolina USA� �
0.250INWC
RTDSENSENRTDLOOP EXTIN 3EXTIN 2EXTIN 1 DO 1DI 1 DO 2 RX/TX+ + + + + + + + + +
_ _ _ _ _ _ _ _ _ _
TE
ST
_
+Brandt Instruments, Inc., Fuquay, North Carolina 27526 USA (919) 552-9011 www.brandtinstruments.com� � �
Model: MST2111002S1P 4-20mA Loop PoweredSerial Number: 2002001 Range: 0 to 0.25 Inches W.C
Abs.Prs Temp. ExtDP
-
Brandt Instruments, Fuquay, North Carolina 27526, USA
(919) 552-9011
Brandt
MST24111002S1PSerial No:200020010 to 0.25 INWC4-20 mA Loop Powered
HI LOW
HI LOW
MST2000 Model Number Description
SERIES: LOOP POWERED MULTIVARIABLE SMARTFLOWTM TRANSMITTER
MST21 = MST2100, NEMA 1 Panel Mount Enclosure, Differential Pressure Configuration & Non-isolated 4 Wire RTD Input Standard.
MST24 = MST2400, NEMA 4X, Fiberglass Enclosure, Differential Pressure Configuration & Non-isolated 4 Wire RTD Input Standard.
MST24 1 1 1 H D 2S 1 0 P
ISOLATED INPUT MODULE: Absolute Pressure Transmitter
0 = None
1 = Isolated Input Module: Accepts 4-20mA input signal from an External Absolute Pressure Transmitter.
2 = Isolated Input Module with Integral Absolute Pressure Transmitter, 0-25 PSI range standard. Consult factory for other ranges.MST2400 only. Requires external 24V source.
NOTE: For factory setup of the MST2000’s multivariable configuration, provide the following information with your order.
� Initial Span Setting of MST2000 in Inches of Water Column ifother than the standard range.
� External parameters for Temperature, Pressure and 2nd Differen-tial Pressure Transmitter (Input Range, Zero/Span Values, etc.).
� Flowmeter Parameters and conditions.
� Type of Flowmeter.
� Effective Area in Square Feet or Kfactor of Flowmeter.
� Minimum/Maximum range of flow, temperature and pressure.Please include units of measure.
� Type of medium, molecular weight and specific gravity or density.
� Desired milliamp output setting. Inches of Water, SCFM, etc.
� Tagging Information.
ISOLATED INPUT MODULE: Temperature Transmitter
0 = None 1 = Isolated Input Module: Accepts 4-20mA input signal from an External Temperature Transmitter.
ISOLATED INPUT MODULE: 2nd
Differential Pressure Transmitter
0 = None 1 = Isolated Input Module: Accepts 4-20mA input signal from a 2nd
External D.P. Transmitter.
COMMUNICATIONS MODULE
0 = None H = HART®
Communications Module. Availability pending, consult factory.
DIGITAL I/O MODULE
0 = None D = Digital I/O Module with 1 Input, 2 Outputs. Availability pending, consult factory.
PRESSURE RANGES
1S = Standard Range 1............Max. Span: 0 to 0.10” W.C. Turndown to 0.010” W.C. (10:1).
2S = Standard Range 2 ...........Max. Span: 0 to 0.25” W.C. Turndown to 0.025“ W.C. (10:1).
3S = Standard Range 3 ...........Max. Span: 0 to 1.00“ W.C. Turndown to 0.10“ W.C. (10:1).
4S = Standard Range 4 ...........Max. Span: 0 to 4.00” W.C. Turndown to 0.40” W.C. (10:1).
5S = Standard Range 5 ...........Max. Span: 0 to 16.0” W.C. Turndown to 1.60” W.C. (10:1).
6S = Standard Range 6 ...........Max. Span: 0 to 50.0” W.C. Turndown to 5.00” W.C. (10:1).
CR = Compound Range...........Consult factory. Supply desired Compound Range.
� All maximum pressure ranges have a turndown of 10:1.
� Specify Pressure Range # in model number (example 1S or CR).
� Standard Ranges: MST2000 will be calibrated at Maximum Span. If an Initial Range Setting is desired, supply withorder and unit will be shipped with this Initial Range preset. (Example: 3S set to 0 to 0.5” W.C.).
� Compound Ranges: MST2000 will be calibrated at desired Compound Range. Supply compound range with order(example: -0.25 to +0.25” W.C.).
� All spans will be calibrated in Inches of W.C. Other Units of measure will be converted to Inches of W. C.
OUTPUT
1 = 4-20mA Output.
2 = 4-20mA Output with Integral 120VAC to 24VDC Power Supply. 120VAC Source Re-quired. MST2400 only.
OPTIONS
0 = None
B = Integral High Pressure Blowdown System. MST2400 Only. Requires DigitalI/O Module. 120VAC source required. Enclosure size will change. ConsultFactory for specifications and availability.
P = Continuous Purge to Flowmeter. MST2400 Only. Spans of 0.25” W.C. orgreater. A filtered air supply source of 20 to 80 PSI is required.
ACCESSORIES
0 = None
P = Pipe Mount. MST2400 Only.
MST2000 Loop Powered Multivariable SMARTFLOW� Transmitter
MST2000 Multivariable Versatility
The MST2000’s multivariable capabilities provide the
necessary versatility required to satisfy today’s de-
manding industrial process applications. With program-
mable constants, input/output options and
communication features the MST2000 will concurrently
measure and/or apply the numerous process variables
for a true mass flow measurement.
The MST2000’s configuration is user friendly and is ac-
complished through the integral keypad (no external
software or hardware is required). Optional input, digital
I/O and communication modules can be installed at the
factory or in the field as required.
User Interface
MST2000
�
�
Integral Keypad
ProgrammableLCD Display
Temperature
4 Wire RTD Input StandardProgrammable Constant orOptional 4-20 mA Analog Input
Absolute PressureProgrammable Constant orOptional 4-20 mA Analog Input
2 D.P. Transmitternd
Optional 4-20 mA Analog Input
Spans from 0.01 to 50.0Inch. W.C. with 10:1 Turndown
Differential Pressure
Loop Powered Multivariable SMARTFLOW Transmitter�
4-20 mA Output
HART�
User SelectableInches W.C., SCFM,
ACFM or Lbs./Hr.
Increment & Decrement Buttons
Reset Button
LCD Display
Mounting Plate
1/8” NPTF Process Connections
Electrical Connections
Test Jack
Mode & Edit ButtonsStatus Light & Reset Button
for Isolated Input Options
MST2100: NEMA 1 Enclosure
MST2000 Loop Powered Multivariable SMARTFLOW� Transmitter
FUNCTIONAL SPECIFICATIONS
Service: Clean, dry, non-corrosive Air or Gas.
Other media may be possible with the use of the ContinuousPurge option. Consult factory .
Pressure Ranges: Standard Pressure Ranges� Range 1: 0 to 0.10” W.C.
� Range 2: 0 to 0.25” W.C.
� Range 3: 0 to 1.0” W.C.
� Range 4: 0 to 4.0” W.C.
� Range 5: 0 to 16.0” W.C.
� Range 6: 0 to 50.0” W.C.
Standard Ranges have a turndown of 10:1.
Compound ranges available. Consult factory.
Example: Range 1 Maximum Range = 0 to 0.10” W.C., MinimumRange = 0 to 0.01” W.C. (Turndown of 10:1)
Output Signals: Analog: 4-20 mA signal (Max. Loop resistance =615 Ohms @ 24 VDC) is user programmable toDifferential Pressure (Inches of Water Column) orFlow (SCFM, ACFM or LB/Hr).
External inputs or programmed constants for temperature and ab-solute pressure are necessary for a true flow measurement.
Digital: Two (2) optional digital (open collector)outputs available. Activation programmable byend user. Availability pending.
Communications: Optional digital HART® Communications moduleAvailability pending.
Alarm Programmable HI/LO Limit Alarm.
Display: High Contrast, 2 line, alphanumeric LCD with-20
oto 150
oF (-28 to 66
oC) operating tempera-
ture.
Power SupplyRequired:
24 to 40 VDC loop power, minimum 10.5 volts re-quired at inputs.
Reverse PolarityProtection:
Yes
Turn On Time: 4 seconds (maximum).
TemperatureLimits:
Operating: -40 to 150oF (-40 to 66
oC)
Storage: -40 to 180o
F (-40 to 82oC)
OverpressureLimits:
Proof Pressure: 10 PSIDBurst Pressure: 50 PSID
Maximum Line Pressure: 50 PSIG
Damping: Standard Time Constant: 500 mSec. Additionaldamping adjustable via integral keypad from 0.5to 5 Seconds in 0.5 second increments.
Humidity Limits: 100% Non-condensing, (MST2400 Only).
Inputs: Standard: Non-isolated, 4 wire RTD input con-nection.
Optional 4-20mA Isolated Inputs: Input rangesare software rangeable.
� External Temperature: 4-20mA Input.
� External Absolute Pressure: 4-20 mA Input
� External DP: 4-20mA Input
Optional Digital Input: One optional digital (TTLlevel) input is available. Availability pending.
PERFORMANCE SPECIFICATIONS
Accuracy: For spans from 40% to 100% of maximumrange 1:1 to 2.5:1 then accuracy = 0.15% ofRe-ranged Span.
For spans from 20% to 39% of maximumrange 2.5:1 to 5:1 then accuracy = (0.15 +0.005 � TD) of Re-ranged Span.
For spans from 10% to 19% of maximumrange 5:1 to 10:1 then accuracy = (0.15 +0.010 � TD) of Re-ranged Span.
TD = Maximum Range / Re-ranged Span
Stability: 0.1% of Maximum Range / 12 Months
AmbientTemperature:
Zero: No EffectSpan: Less than 0.001% of Re-ranged Spanper Deg F. Corrected by internal temperaturesensor.
MountingPosition Effect:
Minor effect on Zero. Corrected by setup pa-rameters.
Vibration Effect: Less than 0.2% of Maximum Range / g,10-130 Hz.
PHYSICAL SPECIFICATIONS:
Enclosure Types: MST2100: NEMA 1, Anodized Aluminum.
MST2400: NEMA 4X, Fiberglass.
ProcessConnections:
MST2100: 1/8” NPTFMST2400:
1/4” NPTF Stainless Steel
ElectricalConnections:
MST2100 & MST2400: Cage Clamp style ter-minal block. 12-24 AWG wire size.
MST2400:1/2” Liquid-Tight flexible conduit
connections.
Weight: MST2100: 2.5 lbs. (1.14 kg)
MST2400: 8.0 lbs (3.63 kg)
Company
For over 20 years, Thermo Electron has been the recognized
leader in the measurement of air/gas flow and very low differential
pressure in industrial applications. Thermo offers a complete line of
pitot/static probes and arrays, D.P. Transmitters, the unique Nozzle
Pitot Flow Sensor, turbine flowmeters, the 4400 Alarm Monitor and
a complete family of Current to Pressure (I/P), Voltage to Pressure
(E/P) and Pressure to Current (P/I) Transducers. Contact ThermoElectron, Therm's Representative, or visit our website for fur-
ther information, specifications and applications assistance.
Thermo Electron CorporationP.O. Box 1190, 3333 Airpark Road
Fuquay, North Carolina 27526 U.S.A.
Telephone: (919) 552-9011 Facsimile: (919) 552-9716
Represented By:
NATIONALACCREDITATION
OF CERTIFICATIONBODIES
SIRA CERTIFICATION SERVICE SUPPLIERQUALITY MANAGEMENT CERTIFICATE NO. 940099
ISO 9001
MD37-2000-00, March 2000 All specifications subject to change without notice. HART is a registered trademark of the HART Communications Foundation. All other trademarks acknowledged.
www.thermo.comLet us point you in the right direction.