Honeywell STA822, STA840, STA87L Technical Information

SmartLine

STA800 SmartLine Absolute Pressure Specification 34-ST-03-85, Jan 2021

Technical Information

Introduction

Part of the SmartLine® family of products, the STA800 and STA80L are high performance absolute pressure transmitters featuring piezoresistive sensor technology combining pressure sensing with on chip temperature compensation capabilities providing high accuracy, stability and performance over a wide range of application pressures and temperatures. The SmartLine family is also fully tested and compliant with Experion® PKS providing the highest level of compatibility assurance and integration capabilities. SmartLine easily meets the most demanding application needs for pressure measurement applications..

Best in Class Features:

 Accuracies up to 0.0375% of span standard &

0.025% of span optional

 Stability up to 0.01% of URL per year for 15 years  Automatic temperature compensation  Rangeability up to 100:1  Response times as fast as 80ms  Multiple local display capabilities  External zero, span, & configuration capability  Polarity insensitive electrical connections  Comprehensive on-board diagnostic capabilities  Integral Dual Seal design for highest safety based

on ANSI/NFPA 70-202 and ANSI/ISA 12.27.2

 Full compliance to SIL 2/3 requirements  Modular design characteristics  Available with additional 15-year warranty  Plugged Impulse Line Detection Option  Dual/Triple Calibration Option (HART & Fieldbus

Only)

Figure 1 – STA800 Absolute Pressure

Transmitters feature field-proven piezoresistive

sensor technology

Communications/Output Options:

 4-20mA dc  Honeywell Digitally Enhanced (DE)  HART ® (version 7.0)  FOUNDATION™ Fieldbus

All transmitters are available with the above listed communications protocols.

Span & Range Limits:

Model

URL mmHgA (mbarA)

LRL mmHgA (mbarA)

Min Span

mm HgA

(mbarA)

STA822/82L

780 (1040)

0 (0)

50 (65)

Model

psia

(barA)

psi (barA)

STA840/84L

500 (35)

0 (0)

5 (.35)

STA87L

3000 (210)

0 (0)

30 (2.1)

2 STA800 Smart Pressure Transmitter

Description

The SmartLine family of gauge pressure, differential pressure, and absolute pressure transmitters is designed around a high performance piezo-resistive sensor. This one sensor actually integrates multiple sensors linking process pressure measurement with on-board static pressure (DP Models) and temperature compensation measurements resulting in the best total performance available. This level of performance allows the ST 800 to replace virtually any competitive transmitter available today. (√)

Unique Indication/Display Options

The ST 800 modular design accommodates a basic alphanumeric LCD display or a unique advanced graphics LCD display with many unparalleled features.

Basic Alphanumeric LCD Display Features

 Modular (may be added or removed in the field)  0, 90,180, & 270 degree position adjustments  Configurable (HART only) and standard (Pa, KPa,

MPa, KGcm2, Torr, ATM, inH2O, mH2O, bar, mbar, inH2O, inHG, FTH2O, mmH2O, mm HG, & psi) measurement units

 2 Lines 16 Characters (4.13H x 1.83W mm)  Square root output indication

Advanced Graphics LCD Display Features

 Modular (may be added or removed in the field)  0, 90, 180, & 270 degree position adjustments  Standard and custom measurement units

available.

 Up to eight display screens with 3 formats are

possible

 (Large PV with Bar Graph or PV with Trend Graph)  Configurable screen rotation timing (1 to 30 sec)  Display Square Root capabilities may be set

separately from the 4-20mA dc output signal

 Unique “Health Watch” indication provides instant

visibility of diagnostics

 Multiple language capability. (EN, GE, FR, IT, SP,

RU, TR, CN and JP)

Diagnostics

SmartLine transmitters all offer digitally accessible diagnostics which aid in providing advanced warning of possible failure events minimizing unplanned shutdowns, providing lower overall operational costs

Configuration Tools

Integral Three Button Configuration Option

Suitable for all electrical and environmental requirements, SmartLine offer the ability to configure the transmitter and display via three externally accessible buttons when either display option is selected. Zero/span capabilities are also optionally available via these buttons with or without selection of a display option.

Hand Held Configuration SmartLine transmitters feature two-way communication and

configuration capability between the operator and the transmitter. All Honeywell transmitters are designed and tested for compliance with the offered communication protocols and are designed to operate with any Standards compliant handheld configuration device.

Personal Computer Configuration

Honeywell’s SCT 3000 Configuration Toolkit provides an easy way to configure Digitally Enhanced (DE) instruments using a personal computer as the configuration interface. Field Device Manager (FDM) Software and FDM Express are also available for managing HART & Fieldbus device configurations.

System Integration

 SmartLine communications protocols all meet the

most current published standards for HART/DE/Fieldbus.

 Integration with Honeywell’s Experion PKS offers the

following unique advantages.

o Transmitter messaging o Maintenance mode indication o Tamper reporting o FDM Plant Area Views with Health summaries o All ST 800 units are Experion tested to provide

the highest level of compatibility assurance

STA800 Smart Pressure Transmitter 3

Modular Design

To help contain maintenance & inventory costs, all ST 800

transmitters are modular in design supporting the user’s

ability to replace meter bodies, add indicators or change electronic modules without affecting overall performance or approval body certifications. Each meter body is uniquely characterized to provide in-tolerance performance over a wide range of application variations in temperature and pressure and due to the Honeywell advanced interface, electronic modules may be swapped with any electronics module without losing in-tolerance performance characteristics.

Modular Features

 Meter body replacement  Exchange/replace electronics/comms modules*  Add or remove integral indicators*  Add or remove lightning protection (terminal

connection)*

* Field replaceable in all electrical environments (including IS) except flameproof without violating agency approvals.

With no performance effects, Honeywell’s unique

modularity results in lower inventory needs and lower overall operating costs.

Plugged Impulse Line Detection:

STA800 models are offered with a PILD option which provides indication of a plugged impulse line or process connection. When used in conjunction with a basic or advanced display, a non-critical diagnostic indication appears on the integral display. For units without an integral display, an indication can be seen via the host or hand held device when HART Protocol is utilized.

Dual/Triple Calibration:

STA800 models are optionally offered with multiple calibrations. In lieu of a standard factory calibration, units can be supplied with 1, 2, or 3 customer specified calibrations. These calibrations are stored in the meter body and provide users with factory calibrated performance at up to three different calibrated ranges. This increases application flexibility without requiring any costly recalibration or additional inventory.

Performance Specifications

Reference Accuracy:(conformance to +/-3 Sigma)

Table 1

Model

URL

LRL

Min Span

Maximum

Turndown

Ratio

Stability

(% URL/

Year for 15

years)

Reference

Accuracy

1,2

% Span

Std/Opt.

STA822

780 mmHgA

(1040 mbarA)

0.0 mmHgA (0.0 mbarA)

50 mmHgA (65 mbarA)

15:1

0.010

0.0375/0.025 STA840

500 psia (35 barA)

0.0 mmHgA (0.0 mbarA)

5 psia (0.35 barA)

100:1

STA82L

780 mmHgA

(1040 mbarA)

0.0 mmHgA (0.0 mbarA)

50 mmHgA (65 mbarA)

15:1

0.015

0.0375

STA84L

500 psia (35 barA)

0.0 mmHgA (0.0 mbarA)

5 psia (0.35 barA)

100:1

0.010

0.0375/0.025

STA87L

3000 psi (210 barA)

0.0 mmHgA (0.0 mbarA)

30 psia (2.1 barA)

100:1

Zero and span may be set anywhere within the listed (URL/LRL) range limits.

4 STA800 Smart Pressure Transmitter

Performance Specifications

Accuracy at Specified Span and Temperature: (Combined Zero & Span, conformance to +/-3 Sigma)

Table 2

Accuracy

1,2

(% of Span)

Combined Zero & Span

Temperature Effect

(% Span/ 28oC (50oF))

Model

URL

Reference Turndown

A

B

C

(see URL

units)

D

E

Standard Accuracy

STA822

780 mmHgA

(1040 mbarA)

8.7:1

0.005

0.0325

90 (120)

0.050

0.040

STA840

500 psia

(35 barA)

25:1

20 (1.4)

0.025

0.005

STA82L

780 mmHgA

(1040 mbarA)

5.6:1

140 (187)

0.050

0.080

STA84L

500 psia

(35 barA)

25:1

20 (1.4)

0.025

0.007

STA87L

3000 psi (210

barA)

10:1

300 (21)

0.025

0.007 High Accuracy Option

STA822

780 mmHgA

(1040 mbarA)

8.7:1

0.005

0.0200

90 (120)

0.050

0.040

STA840

500 psia

(35 barA)

25:1

20 (1.4)

0.025

0.005

STA84L

500 psia

(35 barA)

25:1

20 (1.4)

0.025

0.007

STA87L

3000 psi

(210 barA)

10:1

300 (21)

0.007

Turn Down Effect

Temp Effect

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Total Performance (% of Span):

Total Performance Calculation: = +/- √ (Accuracy)2 + (Temperature Effect)2

Total Performance Examples (for comparison): standard accuracy 5:1 Turndown, +/-50 oF (28oC) shift

STA822 @ 156 mmHgA: 0.253% of span STA82L @ 156 mmHgA: 0.451% of span STA840 @ 100 psia: 0.063% of span STA84L @ 100 psia: 0.071% of span STA87L @ 600 psia: 0.071% of span

Typical Calibration Frequency:

Calibration verification is recommended every four (4) years.

Notes:

1. Terminal Based Accuracy - Includes combined effects of linearity, hysteresis, and repeatability. Analog output adds 0 .005% of span.

2. For zero based spans and reference conditions of: 25 oC (77oF), 10 to 55% RH, and 316 Stainless Steel barrier diaphragm.

STA800 Smart Pressure Transmitter 5

Operating Conditions – All Models

Parameter

Reference

Condition

Rated Condition

Operative Limits

Transportation and

Storage

C

F

C

F

C

F

C

F

Ambient Temperature1

25±1

77±2

-40 to 85

-40 to 185

-40 to 85

-40 to 185

-55 to 120

-67 to 248

Meter Body Temperature2

STA822/STA82L

25±1

77±2

See Figure 2

-55 to 125

-67 to 257

STA840, 84L, 87L

25±1

77±2

-40 to 110

-40 to 230

-40 to 125

-40 to 257

-55 to 125

-67 to 257

Humidity %RH

10 to 55

0 to 100

Vacuum Region - Minimum Pressure

STA822, 82L, 840,84L, 87L

See Figure 2. Operate within specifications above 25 mmHgA (33 mbarA). Short term3 exposure to full vacuum will not result in damage.

Supply Voltage, Current, and Load Resistance

(HART & DE)

10.8 to 42.4 Vdc at terminals (IS versions limited to 30 Vdc) 0 to 1,440 ohms (as shown in Figure 3)

Maximum Allowable Working Pressure (MAWP) 4, 5

STA822, 82L = 780 mmHgA, 1,040 mbarA STA840, 84L = 500 psia, 35 barA STA87L = 3,000 psia, 210 barA

1

LCD Display operating temperature -20C to +70C Storage temperature -30C to 80C.

2

Silicone 704 minimum temperature rating is 0

o

C (32oF). CTFE minimum temperature rating is -30C (-22F).

3

Short term equals 2 hours at 70C (158F)

4

Units can withstand overpressure of 1.5 x MAWP without damage

5

Consult factory for MAWP of ST 700 transmitters with CRN approval

6 STA800 Smart Pressure Transmitter

-40

-30

-20

40

50

60

70

80

90

100

110

120

ºC

ºF

-40

-22

-4

104

122

140

158

176

194

212

230

248

0.1

1.0

10

100

1000

2

3 4 5 6 7 8 9 2 3 4 5

6

7 8 9

2 3 4 5 6

7 8 9

2

3 4 5 6 7 8 9

] [

Meter Body Temperature

] [

NOTE:

Short term exposure (2 hours at

70°C/158°F) to hard vacuum will not

result in damage.

0

32

Measured

Pressure

mmHgA

Rated Operating Area

Silicone Oil

200®

Operative

Limit

Silicone Oil

704®

CTFE

LEGEND:

Rated operating area

Contact Marketing

Applications for "special"

quote.

25 mmHgA

(33.3 mbarA)

23065

Figure 2 - Measured pressure versus meter body temperature chart for STA722, 72L

Figure 3 - Supply voltage and loop resistance chart & calculations

STA800 Smart Pressure Transmitter 7

Performance Under Rated Conditions – All Models

Parameter

Description

Analog Output Digital Communications:

Two-wire, 4 to 20 mA (HART & DE Transmitters only) Honeywell DE, HART 7 protocol or FOUNDATION Fieldbus ITK 6.0.1 compliant All transmitters, irrespective of protocol have polarity insensitive connection.

HART & DE Output Failure Modes

(NAMUR for DE Units requires selecting display and configuration buttons or factory configuration)

Honeywell Standard: NAMUR NE 43 Compliance: Normal Limits: 3.8 – 20.8 mA 3.8 – 20.5

mA Failure Mode: ≤ 3.6 mA and ≥ 21.0 mA ≤ 3.6 mA and ≥

21.0 mA

Supply Voltage Effect

0.005% of span per volt.

Transmitter Turn on Time (includes power up & test algorithms)

HART or DE: 2.5 sec Foundation Fieldbus: Host dependant

Response Time (delay + time constant)

DE/HART Protocol FOUNDATION Fieldbus 80ms 150ms (Host Dependant)

Damping Time Constant

HART: Adjustable from 0 to 32 seconds in 0.1 increments. Default Value: 0.5

seconds DE: Discrete values 0, .16, .32, .48, 1, 2, 4, 8, 16, 32 seconds. Default Value: 0.48 seconds

Vibration Effect

Less than +/- 0.1% of URL w/o damping Per IEC60770-1 field or pipeline, high vibration level (10-2000Hz: 0.21 displacement/3g max acceleration)

Electromagnetic Compatibility

Meets IEC61326

Lightning Protection Option

Leakage Current: 10uA max @ 42.4VDC 93C Impulse rating:

8/20uS 5000A (>10 strikes) 10000A (1 strike min.) 10/1000uS 200A (> 300 strikes)