Honeywell STG800 User Manual
SmartLine
Technical Information
STG800 SmartLine Gauge Pressure
Specification 34-ST-03-83, Jan 2021
Introduction
Part of the SmartLine® family of products, the STG800 and
STG80L are high performance gauge pressure transmitter
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 0.015% 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 12.27.1
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 – STG800 Gauge 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 psi
(bar)
LRL
psi (bar)
Min
Span
STG830/STG83L
50 (3.5)
-14.7 (-1.0)
0.5 (.35)
STG840/STG84L
500 (35)
-14.7 (-1.0)
5 (.35)
STG870/STG87L
3000 (210)
-14.7 (-1.0)
30 (2.1)
STG88L
6000 (420)
-14.7 (-1.0)
60 (4.2)
STG89L
10000 (690)
-14.7 (-1.0)
100 (6.9)
2 STG800 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, DE, FR, IT, ES,
RU, TR, CN, 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
3 STG800 Smart Pressure Transmitter
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 intolerance performance characteristics.
Modular Features
o Meter body replacement
o Exchange/replace electronics/comms modules*
o Add or remove integral indicators*
o 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:
STG800 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:
STG800 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.
4 STG800 Smart Pressure Transmitter
Performance Specifications
Reference Accuracy: (conformance to +/-3 Sigma)
Table 1
Model
URL
LRL
Min Span
Maximum
Turndown
Ratio
Stability
(% URL/
Yr for 15
years)
Reference
Accuracy
1,2
(% Span)
Std / Opt.
STG830
50 psi (3.5 bar)
-14.7 psi (-1.0 bar)
0.5 psi (.035 bar)
100:1
0.010
0.0375 / 0.025
STG83L
50 psi (3.5 bar)
-14.7 psi (-1.0 bar)
0.5 psi (.035 bar)
STG840
500 psi (35 bar)
-14.7 psi (-1.0 bar)
5 psi (.35 bar)
STG84L
500 psi (35 bar)
-14.7 psi (-1.0 bar)
5 psi (.35 bar)
STG870
3000 psi (210 bar)
-14.7 psi (-1.0 bar)
30 psi (2.1 bar)
STG87L
3000 psi (210 bar)
-14.7 psi (-1.0 bar)
30 psi (2.1 bar)
STG88L
6000 psi (420 bar)
-14.7 psi (-1.0 bar)
60 psi (4.2 bar)
STG89L
10000 psi (690 bar)
-14.7 psi (-1.0 bar)
100 psi (6.9 bar)
0.055 / 0.04
Zero and span may be set anywhere within the listed (URL/LRL) range limits
Accuracy at Specified Span and Temperature: (Conformance to +/-3 Sigma)
Table 2
Accuracy
1,2
(% of Span)
Combined Zero & Span
Temperature Effect
(% Span/ 28
o
C (50
o
F))
Model
URL
Reference
Turndown
A
B
C
(see URL units)
D
E
Standard
Accuracy
STG830
50 psi (3.5 bar)
33.3:1
0.005
0.0325
1.5 (0.105)
0.030
0.003
STG83L
50 psi (3.5 bar)
16:1
3 (0.21)
0.006
STG840
500 psi (35 bar)
35:1
14.5 (1.0)
0.025
0.004
STG84L
500 psi (35 bar)
35:1
14.5 (1.0)
0.007
STG870
3000 psi (210 bar)
10:1
300 (21)
0.005
STG87L
3000 psi (210 bar)
10:1
300 (21)
0.010
STG88L
6000 psi (420 bar)
12:1
600 (35)
STG89L
10000 psi (690 bar)
10:1
0.015
0.0400
1000 (69)
High Accuracy Option
STG830
50 psi (3.5 bar)
0.005
0.0200
1.5 (0.105)
0.030
0.003
STG83L
50 psi (3.5 bar)
16:1
3 (0.21)
0.006
STG840
500 psi (35 bar)
24:1
14.5 (1.0)
0.025
0.004
STG84L
500 psi (35 bar)
14.5 (1.0)
0.007
STG870
3000 psi (210 bar)
6.7:1
300 (21)
0.005
STG87L
3000 psi (210 bar)
300 (21)
0.010
STG88L
6000 psi (420 bar)
600 (35)
STG89L
10000 psi (690 bar)
15:1
0.015
0.0250
1000 (69)
Turn Down Effect
Temp Effect
5 STG800 Smart Pressure Transmitter
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
STG830 @ 10 psi
0.059% of span
STG840 @ 100 psi
0.059% of span
STG870 @ 600 psi
0.063% of span
STG83L @ 10 psi
0.071% of span
STG84L @ 100 psi
0.071% of span
STG87L @ 600 psi
0.084% of span
STG88L @ 1200 psi
0.084% of span
STG89L @ 2000 psi
0.093% 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) for LRV>= 0 psia, 10 to 55% RH, and 316 Stainless Steel barrier diaphragm.
3. STG830 and STG83L, for LRV<0 and / or URV<0, B = 1.25 and E = 0.25.
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
25±1
77±2
-40 to 1101
-40 to 2301
-40 to 125
-40 to 257
-55 to 120
-67 to 248
Humidity %RH
10 to 55
0 to 100
0 to 100
0 to 100
Vac. Region – Min. Pressure
mmHg absolute
inH2O absolute
Atmospheric
Atmospheric
25
13
2 (short term)3
1 (short term)3
Supply Voltage
Load Resistance
10.8 to 42.4 Vdc at terminals
0 to 1,440 ohms (as shown in Figure 2)
Maximum Allowable
Working Pressure (MAWP)4
(Maximum allowable working
pressure is the maximum pressure
allowed for the normal transmitter
operation. MAWP depends on
Approval agencies and transmitter
material of construction. MAWP are
same as URL for gauge and
absolute pressure transmitters)
STG830: 50 psi (3.5 bar) STG83L: 50 psi (3.5 bar)
STG840: 500 psi (35 bar) STG84L: 500 psi (35 bar)
STG870: 3000 psi (210 bar ) STG87L: 3000 psi (210 bar)
STG88L: 6000 psi (420 bar)
STG89L: 10000 psi (690 bar)
Over pressure
These are the pressure limits
the transmitters can
withstand without damage
STG830: 75 psi (5.25 bar) STG83L: 75 psi (5.25 bar)
STG840: 1500 psi (103 bar) STG84L: 1500 psi (103 bar)
STG870: 4500 psi (310 bar) STG87L: 4500 psi (310 bar)
STG88L: 9000 psi (620 bar)
STG89L: 15000 psi (1035 bar)
1
LCD Display operating temperature -20C to +70C . Storage temperature -30C to 80C.
2
Silicone 704 minimum temperature rating is 0oC (32oF). CTFE minimum temperature rating is -30C (-22F).
NEOBEE M-20 minimum temperature rating is -15oC (5oF). NEOBEE
is a registered trademark of Stepan Company.
3
Short term equals 2 hours at 70C (158F).
4
Consult factory for MAWP of ST 800 transmitters with CRN approval.
6 STG800 Smart Pressure Transmitter
Figure 2 - Supply voltage and loop resistance chart & calculations
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% span per volt.
Transmitter Turn on Time
(includes power up & test
algorithms)
HART or DE: 2.5 sec
Foundation Fieldbus: Host dependent
Response Time
(delay + time constant)
DE/HART Protocol FOUNDATION Fieldbus
80ms 150ms (Host Dependent)
Damping Time Constant
HART: Adjustable from 0 to 32 seconds in 0.1 increments. Default Value: 0.5
seconds
DE: Discrete values 0, 0.16, 0.32, 0.48, 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
Complies with EMC directive 2004/108/EC per IEC 61326-3-1 (HART/ DE Units) IEC
61326-1 (FF Units)
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)
7 STG800 Smart Pressure Transmitter
Materials Specifications (see model selection guide for availability/restrictions with various models)
Parameter
Description
Barrier Diaphragms Material
STG800: 316L SS, Hastelloy® C-2762, Monel® 4003, Tantalum, Gold-plated 316L SS,
Gold-plated Hastelloy® C-276, Gold-plated Monel® 400
STG80L: 316L SS, Hastelloy C-276
Process Head Material
STG800: Carbon Steel (Zinc Plated), 316 SS4, Hastelloy® C-2766, Monel® 400
7
STG80L: 316L SS, Hastelloy C-2766
Vent/Drain Valves & Plugs
1
STG800:316 SS4, Hastelloy C-2762, Monel 400
7
STG80L: N/A
Head Gaskets
STG800: Glass-filled PTFE standard. Viton® and graphite are optional. STG80L: N/A
Meter Body Bolting
STG800: Carbon Steel (Zinc plated) standard. Options include 316 SS, NACE A286
SS bolts and nuts or NACE A286 SS bolts and 304 SS nuts STG80L: N/A
Mounting Bracket
Carbon Steel (Zinc-plated) or 304 SS or 316SS angle bracket or Carbon Steel or
304SS or 316SS flat bracket available with 2” pipe bracket. See Figure 3.
Fill Fluid
Silicone 200, CTFE, NEOBEE M-20 or Silicone 704
Electronic Housing
Pure Polyester Powder Coated Low Copper (<0.4%)-Aluminum. Meets NEMA 4X,
IP66, IP67 and NEMA 7 (explosion proof). All stainless steel housing is optional.
Process Connections
STG800: ½ -inch NPT female, DIN 19213 (standard)
STG80L: ½ -inch NPT female, ½ -inch NPT male, 9/16 Aminco, DIN19213 (except
STG89L),
G ½ -B Male threaded
Wiring
Accepts up to 16 AWG (1.5 mm diameter).
Dimensions
See Figure 4 and 5
Net Weight
STG800: 8.3 pounds (3.8 Kg). STG80L: 3.6 pounds (1.6 Kg) with Aluminum Housing
1
Vent/Drains are sealed with Teflon®
2
Hastelloy
®
C-276 or UNS N10276
3
Monel® 400 or UNS N04400 4 Supplied as 316 SS or as Grade CF8M, the casting equivalent of 316 SS.
5
Carbon Steel heads are zinc-plated and not recommended for water service due to hydrogen migration. For that service, use 316 stainless steel wetted
Process Heads.
6
Hastelloy
®
C-276 or UNS N10276. Supplied as indicated or as Grade CW12MW, the casting equivalent of Hastelloy® C-276
7
Monel® 400 or UNS N04400. Supplied as indicated or as Grade M30C, the casting equivalent of Monel® 400
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