multivariable smartflow transmitter - cn · the mst2000’s multivariable capabilities provide the...

MST2000 Loop PoweredMultivariable SMARTFLOW� Transmitter

Thermo 's 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.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 of

0.15% of Span for most ranges.

�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.

�

�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

two (2) 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.

The 4-20mA input modules can be field mountedby 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.

�

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.

�

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 Enclosure

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

A: ISOLATED 4-20mA INPUT MODULE: External 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. Not available with CSA I.S. or Division 2.

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 and Pressure(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 pressurePlease 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

B: ISOLATED 4-20mA INPUT MODULE: External Temperature Transmitter

0 = None 1 = Isolated Input Module: Accepts 4-20mA input signal from an External Temperature Transmitter.

C: CSA I.S. Certification (Review the installation manual for I.S. Approval Information)

0 = None 1 = CSA Approved Intrisically Safe 2 = CSA Approved Division 2

D: COMMUNICATIONS MODULE

0 = None H = HART®

Communications Module. Availability pending, consult factory.

E: DIGITAL I/O MODULE

0 = None D = Digital I/O Module with 1 Input, 2 Outputs. Availability pending, consult factory.

F: 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).



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.

G: OUTPUT

1 = 4-20mA Output,Eng ver 2 = 4-20mA Output w integral 120VAC to 24VDC,Eng ver

3 = 4-20mA Output,metric ver 4 = 4-2mA Output w integral 120VAC to 24VDC,metric ver.

H: 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.

I: ACCESSORIES

0 = None

P = Pipe Mount. MST2400 Only.


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

nd

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.

Increase & Decrease Pushbuttons

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


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.

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.

Communications: Optional digital HART® Communications module

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

�

Optional Digital Input: One optional digital (TTLlevel) input is available.

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,'s Representative, or visit our website for fur-

ther information, specifications and applications assistance.

Thermo Electron Corporation1410 Gillingham LaneSugar Land, Texas 77478 U.S.A.

Telephone: (713) 272-0404 Facsimile: (713) 272-2273

Represented By:

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.

multivariable smartflow transmitter - cn · the mst2000’s multivariable capabilities provide the...

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