Honeywell STR94G, STR93D User Manual

ST 3000 Smart Transmitter

Series 900 Remote Diaphragm Seals Models

STR93D 0 to 100 psid 0 to 7 bar STR94G 0 to 500 psig 0 to 35 bar

In 1983, Honeywell introduced the first Smart Pressure Transmitter― the ST 3000 the first all digital, bi-directional protocol for smart field devices. Today, its ST 3000 Series 900 Remote Seal Transmitters continue to bring proven “smart” technology to a wide spectrum of pressure measurement applications. For applications in which the transmitter must be mounted remotely from the process, Honeywell offers the remote seal line of gauge, absolute and differential pressure transmitters. Typical applications include level measurement in pressurized vessels in the chemical and hydrocarbon processing industries. A second application is flow measurement for slurries and high viscosity fluids in the chemical industry. Honeywell remote seal transmitters are available with secondary fill fluids for corrosive or high temperature process fluids

All ST 3000 transmitters can provide a 4-20 mA output, Honeywell Digitally Enhanced (DE) output, HART

OUNDATION™ Fieldbus output.

or F When digitally integrated with Honeywell’s Process Knowledge System™, EXPERION PKS™, ST 3000 instruments provide a more accurate process variable as well as advanced diagnostics.

Honeywell’s cost-effective ST 3000 S900 transmitters lead the industry in reliability and stability:

• Stability = ±0.01% per year

• Reliability = 470 years MTBF

Introduction

. In 1989, Honeywell launched

output,

Figure 1—Series 900 Remote Seal Pressure Transmitters feature proven piezoresistive sensors and advanced seal technology with standard weld connections.

The devices provide comprehensive self-diagnostics to help users maintain high uptime, meet regulatory requirements, and attain high quality standards. S900 transmitters allow smart performance at analog prices. Accurate, reliable and stable, Series 900 transmitters offer greater turndown ratio than conventional transmitters.

"Honeywell transmitters operating in the digital mode using Honeywell's Digitally Enhanced (DE) protocol make diagnostics available right at the control system's human interface. Equally important, transmitter status information is continuously displayed to alert the operator immediately of a fault condition. Because the process variable (PV) status transmission precedes the PV value, we are guaranteed that a bad PV is not used in a control algorithm. In addition, bi-directional communication provides for remote transmitter configuration directly from the human interface, enabling management of the complete loop.” Maureen Atchison, DuPont Site Electrical & Instrumentation Leader

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Specification and

Model Selection

Guide

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Description of Diaphragm Seals

Diaphragm seals are traditionally used when a standard pressure transmitter should not be exposed to the process pressure directly. Diaphragm seals typically protect the pressure transmitter from one or more damaging aspects of the process media. Consideration for using a diaphragm seal should be made in the following circumstances.

• High Process Temperature

• Process Media is Viscous or Contains Suspended Solids

• Process Media is Subject to Solidifying

• Process Media is Corrosive

• Process Application Requires Sanitary Connections

• Process Application Subjects the Measuring Instrument to Hydrogen Permeation

• Tank Level Applications with Maintenance Intensive Wet Legs

• Tank Application with Density or Interface Measurements

• Measuring Instrument Requires Remote Mounting

The following diaphragm seals are standard from Honeywell (please call your local salesperson if you do not see the product you need for your application):

Figure 2 - Flush Flange Seals can be used with differential, gauge and absolute pressure transmitters and are available with 3” ANSI Class 150, ANSI Class 300 and DIN DN80-PN40 process connections. Flush flange seals can also be provided with Lowers. Lowers are essentially calibration rings, which allow flushing connections if needed – see Figure 31.

Figure 2

Figure 3 - Flange Seal with Extended Diaphragm

can be used with differential, gauge and absolute pressure transmitters and are available with 3” and 4” ANSI Class 150, ANSI Class 300, DIN DN80-PN40 and DIN DN100-PN40 process connections. 2”, 4” and 6” extension lengths are available.

Figure 3

Figure 4 - Pancake Seals can be used with

differential, gauge and absolute pressure transmitters and are available with 3” ANSI Class 150, 300 and 600 process connections.

Figure 5 - Chemical Tee “Taylor” Wedge seals can be used with differential pressure transmitters and are available with Taylor Wedge 5” O.D. process connection.

Figure 4

Figure 5

Description of Diaphragm Seals

Figure 6 - Seals with Threaded Process Connections can be used with differential, gauge and

absolute pressure transmitters and are available with ½”, ¾” and 1” NPT Female process connections.

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Figure 7 - Sanitary Seals can be used with

differential, gauge and absolute pressure transmitters and are available with 3” and 4” Tri-Clover-Tri-Clamp process connections.

Figure 8 - Saddle Seals can be used with differential, gauge and absolute pressure transmitters and are available with 3” and 4” (6 bolt or 8 bolt designs) process connections.

Figure 9 - Calibration Rings are available with Flush Flange Seals and Pancake Seals. Flushing ports (1/4” or ½”) are available with calibration rings.

Figure 6

Figure 7

Figure 8

Figure 10 - Stainless Steel Armor and PVC Coated Stainless Steel Armor Capillaries are available with Honeywell Remote Seal Solutions.

Figure 11 - 2” Stainless Steel Nipples are available

for Close-Coupled remote seal solutions.

Figure 9

Figure 10

Figure 11

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Figure 12 - Welded Meter Body for All-Welded Remote Seal Solution. The welded ST 3000 meter

body is an important part of an All-Welded Remote Seal Solution, which is commonly used in Vacuum applications.

Figure 12

Description Features

The ST 3000 transmitter can replace any 4 to 20 mA output transmitter in

• Choice of linear or square

use today and operates over a standard two-wire system.

The measuring means is a piezoresistive sensor, which actually contains

• Direct digital integration with

three sensors in one. It contains a differential pressure sensor, a temperature sensor, and a static pressure sensor.

Microprocessor-based electronics provide higher span-turndown ratio, improved temperature and pressure compensation, and improved accuracy.

The transmitter’s meter body and electronics housing resist shock,

• Unique piezoresistive sensor

vibration, corrosion, and moisture. The electronics housing contains a compartment for the single-board electronics, which is isolated from an integral junction box. The single-board electronics is replaceable and interchangeable with any other ST 3000 Series 100 or Series 900 model transmitter.

Like other Honeywell transmitters, the ST 3000 features two-way communication and configuration capability between the operator and the transmitter through several Honeywell field-rated portable configuration devices, including the Smart Field Communicator (SFC) and the Multiple

• Smart transmitter capabilities

Communication Configurator (MC ToolKit). While both are made for infield use, the MC Toolkit also can be ordered for use in intrinsically safe environments.

The SCT 3000 Smartline

Configuration Toolkit provides an easy way to configure instruments using a personal computer. The toolkit enables configuration of devices before shipping or installation. The SCT 3000 can operate in the offline mode to configure an unlimited number of devices. The database can then be loaded down-line during commissioning.

root output conformity is a simple configuration selection.

Experion PKS and other control systems provides local measurement accuracy to the system level without adding typical A/D and D/A converter inaccuracies.

automatically compensates input for temperature and static pressure.Added “smart” features include configuring lower and upper range values, simulating accurate analog output, and selecting preprogrammed engineering units for display.

with local or remote interfacing means significant manpower efficiency improvements in commissioning, start-up, and ongoing maintenance functions.

Operating Conditions – All Models

Parameter

Ambient Temperature Process Interface

Temperature Humidity %RH

Maximum Allowable Working Pressure (MAWP)

Vacuum Region, Minimum Pressure - mmHg absolute inH2O absolute

Supply Voltage, Current, and Load Resistance

Reference Condition

(at zero

static)

°C °F °C °F °C °F °C °F

25 ±1 77 ±2 -25 to 70 -13 to 158 -40 to 85 -40 to 185 -55 to 125 -67 to 257

25 ±1 77 ±2 See Figure 13 -55 to 125 -67 to 257

10 to 55 0 to 100 0 to 100 0 to 100

MAWP is minimum of Body Rating or Seal Rating (See Model Selection Guide for Seal MAWP)

atmospheric atmospheric

Voltage Range: 10.8 to 42.4 Vdc at terminals Current Range: 3.0 to 21.8 mA Load Resistance: 0 to 1440 ohms (as shown in Figure 14)

Specifications

Rated Condition Operative Limits

Body MAWP STR93D 750 psig (52 bar) STR94G 500 psig (35 bar)

See Figure 13

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Transportation

and Storage

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Maximum Pressure Limited by Flange Rating of Seal

10000

9000 8000 7000 6000

5000 4000

3000

2000

1000

900

800 700 600 500

400

300 200

100

90 80 70 60

50 40 30

Pressure (mmHgA)

Maximum Pressure Limited

by Flange Rating of Seal

-40

-100

52530

Silicone DC704 30 to 450°F

Silicone DC200

-40 to 350°F

CTFE

5 to 300°F

100

175 350

200 300 400

Process Temperature (Degrees F)

Special High Vacuum Construction required. Consult STC.

450

500

193

psig

1Atm

psig

-9

psig

-14 psig

10000

9000 8000 7000

6000 5000 4000

3000

NEOBEE M-20

Syltherm 800

-40 to 600°F

30 to 400°F

2000

1000

900

800 700 600 500

400 300 200

100

90 80 70 60

50 40 30

Pressure

(mmHgA)

-100

-40

52530

100

175 450

200 400 500

Process Temperature (Degrees F)

Figure 13—ST 3000 Remote Seals operable limits for pressure versus temperature

550

600

193

psig

1Atm

psig

-9

psig

-14 psig

20335

1440

1200

Note: A minimum of 250 ohms

Loop

Resistance

(ohms)

800

650

450

250

0 10.8 16.28 20.63 25 28.3 37.0 42.4

Operating Voltage (Vdc)

Note: A minimum of 250 ohms of loop resistance is necessary

of loop resistance is necessary to support communications.

to support communications. Loop resistance equals barrier

Loop resistance equals barrier resistance plus wire resistance

resistance plus wire resistance plus receiver resistance.

plus receiver resistance.

= Operating Area

Figure 14—Supply voltage and loop resistance chart

Performance Under Rated Conditions * - Model STR93D (0 to 100 psi/7 bar)

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Parameter Description

Upper Range Limit psi bar

Minimum Span psi bar

Turndown Ratio Zero Elevation and Suppression Accuracy (Reference – Includes

combined effects of linearity, hysteresis, and repeatability)

• Accuracy includes residual error

after averaging successive readings.

• For F

Combined Zero and Span Temperature Effect per 28°C (50°F) **

OUNDATION Fieldbus use

Digital Mode specifications. For HART use Analog Mode specifications.

100 (Transmitter URL or maximum seal pressure rating, whichever is lower.) 7

0.9

0.063

110 to 1

No limit except minimum span within ±100% URL. In Analog Mode: ±0.20% of calibrated span or upper range value (URV), whichever is

greater, terminal based. For URV below reference point (50 inH2O), accuracy equals:

50 inH2O

±0.10 + 0.10 In Digital Mode: ±0.175% of calibrated span or upper range value (URV), whichever

is greater, terminal based. For URV below reference point (50 inH2O), accuracy equals:

±0.075 + 0.10

In Analog Mode: ±1.5% of span. For URV below reference point (200 inH2O), effect equals:

±0.30 + 1.2

In Digital Mode: ±1.475% of span.

For URV below reference point (200 inH2O), effect equals:

⎛

span inH2O

⎝

50 inH2O

⎛

span inH2O

⎝

200 in H

200 in H2O

⎛

⎛ ⎝

⎝

⎝⎛⎝

span in H

⎞

or ±0.10 + 0.10

⎠

⎞

or ±0.075 + 0.10

⎠

⎞

or ±0.30 + 1.2

⎠

⎠⎞⎠

125 mbar

()

span mbar

125 mbar

()

span mbar

500 mbar

⎛

⎛ ⎝

⎝

⎝⎛⎝

span mbar

in % of span

⎞

In % span

⎠

⎠⎞⎠

500 mbar

200 in H

200 in H2O

200 in H

⎛

±0.275 + 1.2

* Performance specifications are based on reference conditions of 25°C (77°F), zero (0) static pressure, 10 to 55% RH, and 316L Stainless Steel barrier diaphragm. ** Specification applies to transmitters with 2 seals only. Apply 1.5 times factor to temperature effect for capillary lengths greater than 10 feet or for 2-inch sanitary seals.

⎛ ⎝

⎝

⎝⎛⎝

span in H

⎞

or ±0.275 + 1.2

⎠

⎠⎞⎠

500 mbar

⎛

⎛ ⎝

⎝

⎝⎛⎝

span mbar

⎞

In % span

⎠

⎠⎞⎠

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Performance Under Rated Conditions * - Models STR94G (0 to 500 psi/35 bar)

Parameter Description

Upper Range Limit psi bar

Minimum Span psi bar

Turndown Ratio Zero Elevation and Suppression Accuracy (Reference – Includes

combined effects of linearity, hysteresis, and repeatability)

Accuracy includes residual error

•

after averaging successive readings.

• For FOUNDATION Fieldbus use

Digital Mode specifications. For HART use Analog Mode specifications.

* Performance specifications are based on reference conditions of 25°C (77°F), zero (0) static pressure, 10 to 55% RH, and 316L Stainless Steel barrier diaphragm.

Minimum recommended span for STR93D DP Transmitter with two Remote Seals

Diaphragm Capillary Length

Minimum recommended span for STR94G or STR93D DP Transmitter with one Remote Seal

Diaphragm Direct Capillary Length

Transmitter Minimum Span and Maximum Capillary Length

Size 5' 10' 15' 20' 25' 30' 35' maximum

2.0

2.4

2.9

3.5

4.1

Size Mount 5' 10' 15' 20' 30' 35' maximum

2.0

2.4

2.9

3.5

4.1

15 psig 20 psig 25 psig - - - - 15' 150 iwc 200 iwc 250 iwc 300 iwc 350 iwc 400 iwc 450 iwc 35'

50 iwc 75 iwc 100 iwc 125 iwc 150 iwc 175 iwc 200 iwc 35' 25 iwc 25 iwc 25 iwc 28 iwc 32 iwc 36 iwc 40 iwc 35' 25 iwc 25 iwc 25 iwc 25 iwc 25 iwc 27 iwc 30 iwc 35'

25 psi 30 psi 40 psi 50 psi - - - 15' 10 psi 15 psi 20 psi 25 psi 30 psi 40 psi 50 psi 35'

8 psi 9 psi 10 psi 11 psi 12 psi 14 psi 15 psi 35' 2 psi 2 psi 3 psi 4 psi 5 psi 7 psi 8 psi 35'

0.9 psi 0.9 psi 1 psi 2 psi 3 psi 4 psi 5 psi 35'

500 35

1.4

25 to 1

No limit except minimum span from absolute 0 (zero) to +100% URL.

In Analog Mode: ±0.10% of calibrated span or upper range value (URV), whichever is

greater, terminal based.

In Digital Mode: ±0.075% of calibrated span or upper range value (URV), whichever

is greater, terminal based.

Capillary

Minimum span is the higher of the value from the table above or the value defined under Performance Conditions for the range transmitter

Figure 15— Maximum capillary length and diaphragm size chart.

Performance Under Rated Conditions - General for all Models

Parameter Description

Output (two-wire) Analog 4 to 20 mA or DE digital communications mode. Options available for

OUNDATION Fieldbus and HART protocols.

Supply Voltage Effect 0.005% of span per volt. Damping Time Constant Adjustable from 0 to 32 seconds digital damping. CE Conformity (Europe) 89/336/EEC, Electromagnetic Compatibility (EMC) Directive.

NAMUR NE 43 Compliance Option

SIL 2/3 Compliance

Transmitter failure information is generated when the measuring information is invalid or no longer present. Failure information is transmitted as a current signal but outside the normal 4-20 mA measurement signal level. Transmitter failure values are: ≤ 3.6 mA and ≥ 21.0 mA. The normal signal range is ≥ 3.8 mA and ≤ 20.5 mA.

SIL certified to IEC 61508 for non-redundant use in SIL 2 related Safety Systems (single use) and for redundant (multiple) use in SIL 3 Safety Systems through TÜV Nord Sys Tec GmbH & Co. KG under the following standards: IEC61508-1: 1998; IEC 61508-2: 2000; IEC61508-3: 1998.

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Physical and Approval Bodies

Parameter Description

Process Interface See Model Selection Guide for Material Options for desired Seal Type. Seal Barrier Diaphragm 316L Stainless Steel, Monel, Hastelloy C, Tantalum Seal Gasket Materials Klinger C-4401 (non-asbestos)

Grafoil Teflon Gylon 3510

Mounting Bracket Carbon Steel (zinc-plated) or Stainless Steel angle bracket or Carbon Steel flat

bracket available.

Fill Fluid (Meter Body) Silicone (DC 200) S.G. @ 25°C (77°F) = 0.94

CTFE (Chlorotrifluoroethylene) S.G. @ 25°C (77°F) = 1.89

Fill Fluid (Secondary)* Silicone (DC 200) S.G. @ 25°C (77°F) = 0.94

CTFE (Chlorotrifluoroethylene) S.G. @ 25°C (77°F) = 1.89 Silicone (DC 704) S.G. @ 25°C (77°F) = 1.07

Syltherm 800 S.G. @ 25°C (77°F) = 0.90 NEOBEE M-20 S.G. @ 25°C (77°F) = 0.93

Page 9

Electronics Housing Epoxy-Polyester hybrid paint. Low-copper aluminum alloy. Meets NEMA 4X

(watertight) and NEMA 7 (explosion proof)

Capillary Tubing** Armored Stainless Steel or PVC Coated Armored Stainless Steel. Length: 5, 10,

15, 20, 25 and 35 feet (1.5, 3, 4.6, 6.1, 7.5 and 10.7m). A 2” (51 millimeter) S.S. close-coupled nipple is also available. See Model Selection Guide.

Wiring Accepts up to 16 AWG (1.5 mm diameter) Mounting See Figure 16. Dimensions See Figures 19 and 20 for transmitter dimensions. See Model Selection Guide for

Seal dimensions

Net Weight Transmitter: 4.1 Kg (9 lbs). Total weight is dependent on seal type and capillary

length.

Approval Bodies

Factory Mutual

Explosion Proof: Approved as Explosion Proof for Class I, Division 1, Groups A,

B, C, D locations,

Dust Ignition Proof: Approved as Dust Ignition Proof for Class II, III, Division 1,

Groups E, F, G locations,

Intrincically Safe: Approved as Intrinsically Safe for for Class I, II, III, Division 1,

Groups A, B, C, D, E, F, G locations.

Nonincendive: Approved as Nonincendive for Class I, Division 2, Groups A, B, C,

D locations.

CSA

Explosion Proof:

C, D locations,

Dust Ignition Proof: Approved as Dust Ignition Proof for Class II, III, Division 1,

Groups E, F, G locations,

Intrincically Safe: Approved as Intrinsically Safe for Class I, II, III, Division 1,

Approved as Explosion Proof for Class I, Division 1, Groups B,

Groups A, B, C, D, E, F, G locations.

Canadian Registration Number (CRN)

All ST 3000 model designs, except SATG19L, STG99L, STG170 and STG180 have been registered in all provinces and territories in Canada and are marked CRN:0F8914.5c.

Intrinsically Safe, Zone 0/1: EEx ia IIC T4, T5, T6 Flameproof/Zone 1: EEx d IIC T5, T6 (enclosure IP 66/67)

ATEX

SA (Australian)

INMETRO (Brazil) Flame-Proof, Zone 1: EX d IIC T5

Non-Sparking, Zone 2: EEx nA, IIC T6 (enclosure IP 66/67) Multiple Markings:

Intrinsically Safe: Non-Sparking: Ex n IIC T6 (T4 with SM option)

Ex II 1 G: EEx ia IIC T4, T5, T6, Ex II 2 G: EExd IIC T5, T6

Ex II 3 G: EEx nA, IIC T6 (Honeywell) (enclosure IP 66/67)

EX ia IIC T4

34-ST-03-57 Page 10

Parameter Description

Pressure Equipment Directive (97/23/EC)

* See Figure 13 for Fill Fluid temperature limits. ** 2-inch Sanitary Seals are limited to 15 ft. (4.6 m) capillary length.

NOTE: Pressure transmitters that are part of safety equipment for the protection of piping (systems) or vessel(s) from

exceeding allowable pressure limits, (equipment with safety functions in accordance with Pressure Equipment Directive 97/23/EC article 1, 2.1.3), require separate examination.

The ST 3000 pressure transmitters listed in this Specification have no pressurized internal volume or have a pressurized internal volume rated less than 1,000 bar (14,500 psig) and/or have a maximum volume of less than 0.1 liter. Therefore, these transmitters are either; not subject to the essential requirements of the directive 97/23/EC (PED, Annex 1) and shall not have the CE mark, or the manufacturer has the free choice of a module when the CE mark is required for pressures > 200 bar (2,900 psig).

LP Side

Maximum level

Fixed

ref. leg

Minimum level

HP Side

NOTE: Lower flange seal should not be mounted over 22 feet below the transmitter for silicone fill fluid (11 feet for CTFE fill fluid) with tank at one atmosphere. The combination of tank vacuum and high pressure capillary head effect should not exceed 9 psi vacuum (300 mmHg absolute).

Consult Honeywell for installation of STR93D

Figure 16—Typical mounting arrangement for ST 3000 Transmitter with Remote Diaphragm Seals

Variable

Head

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