Honeywell SmartLine STG800

Honeywell SmartLine STG800 Specification

Caliber
Selectable per diaphragm type

Frequency
4-20 mA Signal Output (DC, No frequency output)

Features
LCD Display, Modular Design, Field Replaceable Electronics, Advanced Diagnostics, Local Zero and Span Adjust, Quick Configuration

Working Temperature
-40C to +85C

Discharge Pressure
Same as measuring range (up to 6,000 psi)

Noise Level
<70 dB(A), negligible

Mounting Type
2-inch Pipe or Panel Mount

Theory
Pressure Transmitter

Inlet/Outlet
1/4 - 18 NPT (Female)

Voltage
Not Applicable (loop powered)

Control System
HART/DE protocol compatible

Material
Stainless Steel 316L Wetted Parts, Aluminum Housing

Structure
Flush Diaphragm/Process Connection with Electronics Housing

Power
12 - 42 VDC (loop powered)

Standard
IEC, ATEX, SIL2, CSA, FM approved

Pressure
Ranges from 0 to 6,000 psi (varies by model)

Usage
Industrial Pressure Measurement

Application
Process Industries (Oil & Gas, Chemical, Power, etc.)

Seals Type
Viton, EPDM, Kalrez (configurable)

Response Time
<100 ms

Explosion Proof
ATEX Ex d, IECEx, FM, CSA certified

Output Signal
4-20 mA DC (two-wire), HART 7 digital protocol

Zero/Span Adjustment
Local (pushbutton) and remote (digital)

Turn Down Ratio
100:1

Weight
4.0 kg (approx., including display)

Accuracy
0.065% of Span

Electrical Connection
1/2 - 14 NPT (Female), M20 x 1.5 (Female)

Long Term Stability
0.2% of URL for 5 years

Display
Optional, 4-line LCD

Vibration Resistance
10-2000 Hz, 10 m/s2

Electrical Isolation
>500 V DC between input/output

Range Limit
Select models: 0-100 mbar up to 0-400 bar

Storage Temperature
-50C to +85C (without display), -40C to +85C (with display)

Enclosure Rating
IP66 / IP67, NEMA 4X

Humidity
0-100% RH, non-condensing

Honeywell SmartLine STG800 Trade Information

Minimum Order Quantity
1 Unit

Delivery Time
2 Week

About Honeywell SmartLine STG800

ST800 Dual Head Gauge Pressure Transmitters are suited for applications requiring small flange or 1/2 NPT connections. Typical applications include gauge pressure measurement of reaction vessels in the chemical industry and level applications with process temperatures of up to 302F /150C.

In-Line transmitters are screwed directly onto a 1/2 male NPT nipple and can be installed in hazardous environments for accurate, repeatable pressure measurement. Typical applications include high-pressure measurement in boilers, fuel feeds and high-pressure reaction vessels in the petrochemical and hydrocarbon recovery industries.
The following models are available:

Model	Range(psi)	Range(Bar)
STG830/STG83L	0-50	0-3.5
STG840/STG84L	0-500	0-35
STG870/STG87L	0-3,000	0-210
STG88L	0-6,000	0-415
STG89L	0-10,000	0-690

Processing & Performance Metrics

Accuracy

Up to 0.0375% of span (standard), 0.025% (optional)

Wiring / Mechanical & Physical Properties

Wiring

Up to 16 AWG (1.5 mm diameter)

Mechanical & Physical Properties

Wetted Materials

316L Stainless Steel, Hastelloy C-276, Monel 400, Tantalum, Gold-Plated options

Electrical Specifications

Supply Voltage

DE: 15 to 49.3 VDC
FF: 9 to 32 VDC
HART: 10.8 to 42.4 VDC

Environmental Conditions

Stability

Up to 0.015% of URL per year for 15 years

Relative Humidity

0 to 100% RH

Rangeability

Up to 100:1 (model dependent)

Overpressure Limits

STG830/STG83L: 75 psi (5.25 bar)
STG840/STG84L: 1500 psi (103 bar)
STG870/STG87L: 4500 psi (310 bar)
STG88L: 9000 psi (620 bar)
STG89L: 15000 psi (1035 bar)

Measurement Type

Gauge Pressure

Maximum Allowable Working Pressure (MAWP)

STG830/STG83L: 50 psi (3.5 bar)
STG840/STG84L: 500 psi (35 bar)
STG870/STG87L: 3000 psi (210 bar)
STG88L: 6000 psi (420 bar)
STG89L: 10000 psi (690 bar)

Ambient Temperature Limits

-40 to +85 deg C (Ambient); -55 to +120 deg C (Storage)

Functional & Control Features

Sensor Technology

Piezoresistive sensor with on-chip temperature compensation

Standards & Certifications

Safety Approvals

SIL 2/3 Certified, Dual Seal design, NAMUR NE-107 Extended Diagnostics

I/O Capabilities

Response Time

As fast as 80 ms millisecond

Process Connection Type

1/2 in NPT (Female), DIN 19213, 1/2 in NPT (Male), 9/16-18 High-Pressure Cone & Thread, G 1/2-B Male

Configuration

External Zero, Span & Configuration Capability; Three-Button Local Configuration

Communication & Protocols

Output/Communications

4 to 20 mA, Honeywell DE, HART (v7.0), FOUNDATION Fieldbus

Software & Interface

Fill Fluids

Silicone Oil 200, CTFE, NEOBEE M-20, Silicone Oil 704

Technical Specifications

Display Options

Modular LCD (Alphanumeric or Advanced Graphics), Multiple Screens, Configurable Units

Exceptional Measurement Accuracy and Range

The STG800 stands out for its impressive 0.065% of span accuracy and a turn down ratio of 100:1, providing precise pressure measurements across a broad range: 0-100 mbar up to 0-400 bar, or up to 6,000 psi, depending on the model. This versatility enables it to handle diverse industrial pressures with consistency and reliability.

Robust Construction for Challenging Environments

Engineered with an enclosure rated for IP66/IP67 and NEMA 4X standards, the SmartLine STG800 can withstand dust, moisture, and extreme temperatures (from -40C to +85C). Its explosion-proof certifications and stainless steel 316L wetted parts ensure long-term durability even in hazardous process industries.

User-Friendly Features and Advanced Diagnostics

Featuring a modular design, the STG800 offers convenient field-replaceable electronics and an optional four-line LCD for on-site display of readings and diagnostics. Local pushbuttons and HART protocol allow for easy zero/span calibration and remote configuration, streamlining maintenance and reducing downtime.

FAQ's of Honeywell SmartLine STG800:

Q: How can the Honeywell SmartLine STG800 be configured for different applications?

A: The STG800 supports both local (pushbutton) and remote (digital via HART 7) configuration, allowing users to adjust zero and span settings or perform parameter changes based on specific process requirements. Modular, field-replaceable electronics further simplify adapting the device to various applications.

Q: What are the main benefits of using the STG800 in process industries?

A: Key benefits include high accuracy (0.065% of span), robust environmental protection (IP66/IP67, NEMA 4X), explosion-proof certifications, long-term stability (0.2% URL over 5 years), and fast response (<100 ms). These features support safe, reliable, and precise pressure measurement essential in oil & gas, chemical, and power plants.

Q: When should I use the optional LCD display on the STG800 transmitter?

A: The optional four-line LCD display is particularly useful in scenarios requiring local monitoring, diagnostic checks, and quick configuration checks, especially where remote communications are limited or on-site troubleshooting is needed.

Q: Where can the SmartLine STG800 be installed in an industrial setting?

A: This transmitter is designed for versatile installation, including 2-inch pipe or panel mounting. Its rugged build allows placement in hazardous, outdoor, or vibrating environments commonly found in process industries.

Q: What is the process for performing zero and span adjustments on the STG800?

A: Zero and span adjustments can be executed locally using the transmitter's built-in pushbutton interface or remotely through digital commands using the HART 7 protocol and a compatible control system or configurator.

Q: How does the STG800 maintain performance in harsh or hazardous environments?

A: Engineered with a robust IP66/IP67, NEMA 4X-rated enclosure, stainless steel wetted parts, and multi-agency explosion-proof certifications, the STG800 resists dust, humidity, vibration, and hazardous atmospheres, ensuring continuous and safe operation.