SmartLine
Technical Information
STA800 SmartLine Absolute Pressure
Specification 34-ST-03-85, Jan 2021
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:
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URL |
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LRL |
Min Span |
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mmHgA |
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mmHgA |
mm HgA |
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(mbarA) |
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(mbarA) |
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STA822/82L |
780 (1040) |
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0 (0) |
50 (65) |
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Model |
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psia |
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psi (barA) |
psi (barA) |
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(barA) |
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STA840/84L |
500 |
(35) |
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0 (0) |
5 (.35) |
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STA87L |
3000 |
(210) |
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0 (0) |
30 (2.1) |
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STA800 Smart Pressure Transmitter |
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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 |
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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
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Maximum |
Stability |
Reference |
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(% URL/ |
Accuracy1,2 |
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URL |
LRL |
Min Span |
Turndown |
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Year for 15 |
% Span |
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Ratio |
years) |
Std/Opt. |
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STA822 |
780 mmHgA |
0.0 mmHgA (0.0 mbarA) |
50 mmHgA (65 mbarA) |
15:1 |
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0.010 |
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(1040 mbarA) |
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0.0375/0.025 |
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STA840 500 psia (35 barA) |
0.0 mmHgA (0.0 mbarA) |
5 psia (0.35 barA) |
100:1 |
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STA82L |
780 mmHgA |
0.0 mmHgA (0.0 mbarA) |
50 mmHgA (65 mbarA) |
15:1 |
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0.015 |
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0.0375 |
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(1040 mbarA) |
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STA84L |
500 psia (35 barA) |
0.0 mmHgA (0.0 mbarA) |
5 psia (0.35 barA) |
100:1 |
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0.010 |
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0.0375/0.025 |
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STA87L |
3000 psi (210 barA) |
0.0 mmHgA (0.0 mbarA) |
30 psia (2.1 barA) |
100:1 |
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Zero and span may be set anywhere within the listed (URL/LRL) range limits.
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STA800 Smart Pressure Transmitter |
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Performance Specifications
Accuracy at Specified Span and Temperature: (Combined Zero & Span, conformance to +/-3 Sigma)
Table 2
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Accuracy1,2 |
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Combined Zero & Span |
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Temperature Effect |
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(% of Span) |
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(% Span/ 28oC (50oF)) |
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Reference |
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Model |
URL |
A |
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(see URL |
D |
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E |
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Turndown |
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units) |
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780 mmHgA |
8.7:1 |
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90 (120) |
0.050 |
0.040 |
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<![if ! IE]> <![endif]>Accuracy |
STA822 |
(1040 mbarA) |
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780 mmHgA |
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500 psia |
25:1 |
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20 (1.4) |
0.025 |
0.005 |
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STA840 |
(35 barA) |
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<![if ! IE]> <![endif]>Standard |
STA82L |
(1040 mbarA) |
5.6:1 |
0.005 |
0.0325 |
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140 (187) |
0.050 |
0.080 |
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500 psia |
25:1 |
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20 (1.4) |
0.025 |
0.007 |
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STA84L |
(35 barA) |
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3000 psi (210 |
10:1 |
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300 (21) |
0.025 |
0.007 |
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STA87L |
barA) |
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<![if ! IE]> <![endif]>Option |
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780 mmHgA |
8.7:1 |
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90 (120) |
0.050 |
0.040 |
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STA822 |
(1040 mbarA) |
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<![if ! IE]> <![endif]>Accuracy |
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500 psia |
25:1 |
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20 (1.4) |
0.025 |
0.005 |
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STA840 |
(35 barA) |
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0.005 |
0.0200 |
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500 psia |
25:1 |
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20 (1.4) |
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0.007 |
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STA84L |
(35 barA) |
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0.025 |
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<![if ! IE]> <![endif]>High |
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3000 psi |
10:1 |
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300 (21) |
0.007 |
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STA87L |
(210 barA) |
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Turn Down Effect |
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Temp Effect |
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±[ + ] |
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≥ |
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± [ + ( |
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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 |
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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 |
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Operating Conditions – All Models
Parameter |
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Reference |
Rated Condition |
Operative Limits |
Transportation and |
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Storage |
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C |
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F |
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F |
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Ambient Temperature1 |
25±1 |
77±2 |
-40 to 85 |
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-40 to 185 |
-40 to 85 |
-40 to 185 |
-55 to 120 |
-67 to 248 |
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Meter Body Temperature2 |
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STA822/STA82L |
25±1 |
77±2 |
See Figure 2 |
See Figure 2 |
-55 to 125 |
-67 to 257 |
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STA840, 84L, 87L |
25±1 |
77±2 |
-40 to 110 |
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-40 to 230 |
-40 to 125 |
-40 to 257 |
-55 to 125 |
-67 to 257 |
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Humidity |
%RH |
10 to 55 |
0 to 100 |
0 to 100 |
0 to 100 |
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Vacuum Region - Minimum |
See Figure 2. |
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Pressure |
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Operate within specifications above 25 mmHgA (33 mbarA). Short term3 exposure to full |
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STA822, 82L, 840,84L, 87L |
vacuum will not result in damage. |
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Supply Voltage, Current, |
10.8 to 42.4 Vdc at terminals (IS versions limited to 30 Vdc) |
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and Load Resistance |
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0 to 1,440 ohms (as shown in Figure 3) |
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(HART & DE) |
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Maximum Allowable |
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STA822, 82L = 780 mmHgA, 1,040 mbarA |
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Working Pressure |
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STA840, 84L = 500 psia, 35 barA |
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(MAWP) 4, 5 |
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STA87L = 3,000 psia, 210 barA |
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1LCD Display operating temperature -20 C to +70 C Storage temperature -30 C to 80 C.
2Silicone 704 minimum temperature rating is 0oC (32oF). CTFE minimum temperature rating is -30 C (-22 F).
3Short term equals 2 hours at 70 C (158 F)
4Units can withstand overpressure of 1.5 x MAWP without damage
5Consult factory for MAWP of ST 700 transmitters with CRN approval
6 |
STA800 Smart Pressure Transmitter |
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1000 |
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Operative |
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Limit |
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Rated Operating Area |
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Silicone Oil |
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200® |
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100 |
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CTFE |
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Measured |
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Pressure |
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mmHgA |
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25 mmHgA |
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704® |
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LEGEND: |
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Rated operating area |
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Applications for "special" |
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1.0 |
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quote. |
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NOTE: Short term exposure (2 hours at |
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70°C/158°F) to hard vacuum will not |
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0.1 |
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-40 |
-30 |
-20 |
0 40 |
50 |
60 |
70 |
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90 |
100 |
110 |
120 |
ºC |
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-40 |
-22 |
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32 104 |
122 |
140 |
158 |
176 |
194 |
212 |
230 |
248 |
ºF |
Meter Body Temperature
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 |
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Performance Under Rated Conditions – All Models
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Parameter |
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Description |
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Analog Output |
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Two-wire, 4 to 20 mA (HART & DE Transmitters only) |
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Digital Communications: |
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Honeywell DE, HART 7 protocol or FOUNDATION Fieldbus ITK 6.0.1 compliant |
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All transmitters, irrespective of protocol have polarity insensitive connection. |
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HART & DE Output Failure |
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Honeywell Standard: |
NAMUR NE 43 |
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Modes |
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Compliance: |
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(NAMUR for DE Units requires |
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Normal Limits: |
3.8 – 20.8 mA |
3.8 – 20.5 |
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selecting display and |
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mA |
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configuration buttons or factory |
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Failure Mode: |
≤ 3.6 mA and ≥ 21.0 mA |
≤ 3.6 mA and ≥ |
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configuration) |
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21.0 mA |
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Supply Voltage Effect |
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0.005% of span per volt. |
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Transmitter Turn on Time |
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HART or DE: 2.5 sec |
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(includes power up & test |
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Foundation Fieldbus: Host dependant |
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algorithms) |
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Response Time |
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DE/HART Protocol |
FOUNDATION Fieldbus |
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(delay + time constant) |
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80ms |
150ms (Host Dependant) |
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Damping Time Constant |
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HART: Adjustable from 0 to 32 seconds in 0.1 increments. Default Value: 0.5 |
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seconds |
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DE: Discrete values 0, .16, .32, .48, 1, 2, 4, 8, 16, 32 seconds. Default Value: 0.48 |
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seconds |
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Vibration Effect |
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Less than +/- 0.1% of URL w/o damping |
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Per IEC60770-1 field or pipeline, high vibration level (10-2000Hz: 0.21 |
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displacement/3g max acceleration) |
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Electromagnetic |
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Meets IEC61326 |
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Compatibility |
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Lightning Protection Option |
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Leakage Current: 10uA max @ 42.4VDC 93C |
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Impulse rating: |
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8/20uS |
5000A (>10 strikes) |
10000A (1 strike min.) |
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10/1000uS 200A (> 300 strikes) |
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