Who is Honeywell and what does it make?
Honeywell Process Solutions brings together Honeywell's control systems, process instruments and sensors for industrial plants. Its main platform, Experion PKS, is a distributed control system (DCS) used in refineries, chemical plants and water treatment installations. For the Romanian market we can quote pressure and temperature transmitters from the SmartLine range, plus related process instruments.
The SmartLine range covers both temperature transmitters, such as the STT850, with digital accuracy of up to 0.1°C for RTD inputs and stability of 0.01% of span per year for ten years, and pressure transmitters from the STG700 series, available in five steps, from 0-3.5 bar to 0-690 bar, with standard accuracy of up to 0.055% of the measuring span. The STG700 and STT850 transmitters have SIL 2/3 certification and approvals for explosive areas (ATEX, IECEx, FM, CSA).
For industrial installations in Romania — refineries, chemicals, water treatment — the SmartLine range offers a certified alternative where accuracy and functional safety (SIL) matter more than the unit cost of the transmitter.
What do we supply from the Honeywell range?
| Product | Description |
|---|---|
| SmartLine STT850 — Temperature transmitter | Temperature transmitter with digital accuracy of up to 0.1°C for RTD inputs, stability of 0.01% of span per year for ten years and an update time of 125-250 milliseconds. It accepts RTD (2/3/4 wire), thermocouple, mV or ohm inputs, with IP66/IP67 protection and 2000 VDC galvanic isolation. The customer must state the type of sensor used and the temperature range of the process. |
| SmartLine STG700 — Pressure transmitter | Family of gauge pressure transmitters in five steps — from 0-3.5 bar (STG730) to 0-690 bar (STG79L) — with standard accuracy of up to 0.055% of the measuring span and turndown of up to 100:1. SIL 2/3 certified and suited to pressure measurement on boilers, fuel supply or tank level. The customer must specify the maximum process pressure and the type of connection required. |
| Experion PKS — Distributed control system | Distributed control (DCS) platform for unifying the monitoring and control of industrial processes, with asset management functions and software-assisted predictive maintenance. Used in refineries, petrochemicals and LNG plants. Implementation requires direct technical discussion with the manufacturer for system sizing. |
Why Honeywell?
- SmartLine STT850 temperature transmitters with digital accuracy of up to 0.1°C for RTD inputs
- SmartLine STG700 pressure transmitters available in five steps, from 0-3.5 bar to 0-690 bar
- SIL 2/3 certification to IEC 61508 and ATEX/IECEx approvals for explosion-risk areas
- The Experion PKS distributed control system, used as a unified platform in refineries and chemical plants
- Marine approvals (ABS, DNV, LR, BV), useful for industrial installations with marine classification requirements
Which Honeywell codes and series are requested most often?
| Code | Description |
|---|---|
| SmartLine STF700 | flange-mounted pressure transmitter, ST700 family |
| SmartLine ST700 | flush-mounted pressure transmitter, ST700 family |
| SmartLine STR700 | remote seal transmitter, ST700 family |
| SmartLine STD700 | differential pressure transmitter, ST700 family |
| SmartLine STA700 | absolute pressure transmitter, ST700 family |
| SmartLine STG700 | gauge pressure transmitter, ST700 family |
| SmartLine STT650 | DIN rail mounted temperature transmitter |
| SmartLine STT700 | temperature transmitter, direct replacement for STT250 |
| SmartLine STT750 | temperature transmitter for control and safety |
| SmartLine STT850 | high-performance temperature transmitter, large temperature variations |
| SmartLine STG830/STG83L | gauge pressure transmitter, range 0-3.5 bar |
| SmartLine STG840/STG84L | gauge pressure transmitter, range 0-35 bar |
| SmartLine STG870/STG87L | gauge pressure transmitter, range 0-210 bar |
| SmartLine STG88L | gauge pressure transmitter, range 0-415 bar |
| SmartLine STG89L | gauge pressure transmitter, range 0-690 bar |
Where is Honeywell equipment used?
- Oil and gas — refineries and petrochemical plants
- Liquefied natural gas (LNG) — monitoring and control of liquefaction plants
- Mining and metals — process instrumentation at extraction plants
- Chemicals — process control with SIL-certified transmitters
- Water treatment and energy — instrumentation for process stations
How do we supply Honeywell in Romania?
We source Honeywell Process Solutions instruments to order through European supply channels; availability and lead time are confirmed in the quotation — we rely on the manufacturer's datasheets for the parameters of each transmitter. Made to order, usually 1–4 weeks, depending on the model and the certifications requested (SIL, ATEX). For a correct quotation we need the type of measurement (pressure or temperature), the process range and whether the installation requires certification for explosive areas. We do not confirm immediate availability for versions with special certifications.
We do not offer configuration or commissioning for the Experion PKS system, which requires a system integrator.
Frequently asked questions about Honeywell
What is the difference between the SmartLine ST700 and ST800 series from Honeywell?
The ST700 family covers standard, gauge, differential, absolute and flange-mounted pressure transmitters, and is designed as a cost-effective replacement for existing installations. The ST800 series, through models STG830 to STG89L, offers accuracy of up to 0.0375% of span (compared with 0.055% for the STG700 series), for applications with higher accuracy requirements; the pressure ranges are comparable, from 0-3.5 bar to 0-690 bar.
How do I choose the right SmartLine temperature transmitter?
The choice depends on the performance level required: STT650 is the DIN rail mounted version for control panels, STT700 is a direct replacement for the old STT250 model in common applications, STT750 covers control and safety on a wide scale, and STT850 offers high total installed accuracy for large ambient temperature variations. Also check the sensor type and the output signal required.
What measuring range does the Honeywell STG89L transmitter have?
STG89L covers a pressure range from 0 to 10,000 psi, i.e. 0-690 bar, and is the robust version of the STG800 family for very high pressure applications. Standard accuracy is up to 0.0375% of span, with a 0.025% option for applications that require greater accuracy.
Do you supply Honeywell SmartLine transmitters in Romania?
Yes, we source to order transmitters from the SmartLine ST700, ST800 and STT families presented above, according to the manufacturer's datasheets; we do not keep these instruments on the shelf as our own stock. The lead time to order for Honeywell is usually 1–4 weeks, depending on the model. For a correct quotation, state the type of measurement, the range and the output signal required.
What should I send for a quotation for a SmartLine pressure transmitter?
You need to state the type of measurement - gauge, differential or absolute - the pressure range required, the fluid handled, the type of process connection and the output signal required, analogue or digital. These details allow the correct choice between the ST700 and ST800 families and avoid over- or under-sizing the instrument.
How do I request a Honeywell quotation?
Send the Honeywell code from the nameplate and the quantity; we reply in English with availability and the lead time written in the quotation.
Request a quoteUpdated: 12 November 2026 · Sources: Honeywell (manufacturer documentation)