Brand: VEGA

FX81.ICEAIFAXKMAM VEGA Level Transmitter

Name: VEGA FX81 Level Transmitter TDR 4-20mA HART – Brochure
Brand: VEGA

Description

Overview

The VEGA FX81 level transmitter is a guided radar (TDR) instrument for continuous level measurement in liquids and bulk solids, supplied in the configuration FX81.ICEAIFAXKMAM with a 2808 mm exchangeable rod probe. It provides reliable level measurement for process and storage applications.

The unit features a two-wire 4-20 mA/HART output with SIL qualification, an IEC Ex ia IIC T6…T1 approval, and a plastic single chamber housing with IP66/IP67 protection, making it suitable for hazardous area installations.

Engineering & Design

The exchangeable rod probe of 8 mm diameter in 316L material is mounted with a process fitting of NPS 4″ Class 300 RF flange per ASME B16.5 in 316/316L, and the FKM (SHS FPM 70C3 GLT) seal provides a second line of defence for process temperatures from -40 to +150 C.

The PLICSCOM display and adjustment module is mounted for on-site configuration, and the M20x1.5 cable entry with PA black cable gland (5-9 mm) simplifies field wiring. The transmitter operates worldwide with measuring units in metre or millimetre and is approved under IEC Ex ia IIC T6…T1 for gas groups with Ga, Ga/Gb, and Gb suitability.

Key Features

Guided radar (TDR) level measurement
Two-wire 4-20 mA/HART with SIL qualification
Exchangeable rod probe, 8 mm, 316L, 2808 mm length
Flange NPS 4″ Class 300 RF per ASME B16.5 (316/316L)
FKM seal, process temperature -40 to +150 C
IEC Ex ia IIC T6…T1 approval (Ga, Ga/Gb, Gb)
Plastic single chamber housing, IP66/IP67
M20x1.5 cable entry with PA gland
PLICSCOM display module mounted

Applications

Liquid level measurement in process tanks
Bulk solids level monitoring
Hazardous area level applications
Chemical and petrochemical plants
Storage and process vessel level control

Specifications

Specification	Value
Manufacturer	VEGA
Model	FX81 (FX81.ICEAIFAXKMAM)
Measuring Principle	Guided radar (TDR)
Probe	Exchangeable rod, 8 mm, 316L, 2808 mm
Process Fitting	Flange NPS 4″ Class 300 RF, ASME B16.5, 316/316L
Seal	FKM (SHS FPM 70C3 GLT)
Process Temperature	-40 to +150 C
Output	Two-wire 4-20 mA/HART, SIL qualified
Approval	IEC Ex ia IIC T6…T1 (Ga, Ga/Gb, Gb)
Housing	Plastic single chamber, IP66/IP67
Cable Entry	M20x1.5 with PA gland (5-9 mm)
Display	PLICSCOM mounted

Level measurement in hazardous areas demands approved instruments, and the VEGA FX81 guided radar level transmitter is engineered for that duty, which is why Seven Star LLC supplies the VEGA FX81 level transmitter with complete configuration documentation.

The VEGA FX81 level transmitter is the guided radar instrument of the VEGAFLEX family with the rod or the cable probe for the continuous level measurement. The probe is installed in the tank nozzle and is matched to the tank height with the parameter setting of the sensor. The output is configurable as the 4-20 mA signal with HART, and the instrument is suitable for the liquids and the solids of the process.

The FX81 transmitter is parameterized with the PACTware software and the VEGA DTM, and the echo curve is displayed for the verification of the measurement at the commissioning. The probe is ordered with the length and the process connection matched to the tank drawing, and the blocking distance is set for the product level of the application. The housing is closed with the double seal for the hazardous area of the plant.

Why Seven Star LLC

Seven Star LLC supplies the VEGA FX81 guided radar level transmitter for level measurement projects across the Gulf, with verified configurations and technical support. Our team assists with probe selection, flange matching, and hazardous area requirements.

We serve oil and gas, chemical, and process industries with reliable B2B supply of level instrumentation throughout the GCC.

Measurement Confidence

The guided radar principle measures the level by time of flight of a pulse along the probe, a method that is unaffected by changing dielectric constants, foam, or vapour in the tank. The 2808 mm rod probe and NPS 4 Class 300 RF flange cover the process connections common in chemical and storage service.

The SIL-qualified two-wire electronics support both control and safety duties, and the IP66/IP67 housing with M20 gland simplifies installation in outdoor and process areas. The PLICSCOM module gives operators local access to the reading and configuration.

Checking the FX81 Order Code Against Your Vessel

A guided radar transmitter is built to order for a specific nozzle and vessel, so the order code must be checked against the installation before it is reused or replaced. For this unit, FX81.ICEAIFAXKMAM defines the approval, the 8 mm 316L rod probe, the NPS 4″ Class 300 RF flange, the FKM seal, the two-wire 4-20 mA/HART electronics, the plastic housing and the PLICSCOM display. Before ordering, confirm:

The flange size, pressure class and facing on the vessel nozzle.
The required probe length (2808 mm on this unit) against the vessel drawing, allowing for the nozzle height and the bottom clearance.
That the process temperature, pressure and medium are compatible with the FKM seal and 316L wetted parts.
The hazardous area zone and the approval marking required at site.

Installation and Commissioning

Mount the probe so that it hangs freely, keeping clear of vessel internals, inlet streams and the vessel wall, according to the minimum distances in the VEGA instructions. In narrow or tall nozzles, check the nozzle dimensions against the recommendations, because nozzle geometry affects the signal near the top of the probe. During commissioning, enter the vessel height and the reference points, the medium type and the damping. Then review the echo curve with the PLICSCOM module or PACTware to confirm a clean level echo. Compare the reading with a manual dip or a sight glass at two different levels if possible, and check the 4-20 mA output at the control system.

Maintenance and Troubleshooting

Heavy build-up on the rod can affect the measurement in sticky products, so inspect and clean the probe during vessel entries.
If the level jumps or freezes, save an echo curve and compare it with the commissioning curve before changing settings.
False echoes from internals near the probe can be suppressed with a false signal suppression performed with the vessel as empty as possible.

Applications in Oman and the GCC

Storage tanks, separators, knockout drums and chemical dosing vessels in Oman and the GCC often handle vapour, foam or products whose properties change over time. The VEGA FX81 level transmitter works well in these conditions. Its SIL-qualified electronics also allow it to be used in level protection loops.

Supply from Seven Star LLC

Seven Star LLC supplies VEGA level instruments built to the required order code. Send your existing code or the vessel data sheet, and our team will check the probe length and process connection with you.

Request a Quote for SUPPLY/56 FX81.ICEAIFAXKMAM WEGA Level Transmitter

For the VEGA FX81 level transmitter, guided radar level transmitter or any related control and instrumentation requirement, contact the Seven Star LLC team. Submit a formal inquiry through our RFQ page with your measurement range, connection and configuration, and our specialists will respond with a detailed commercial proposal and the official VEGA documentation.

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About brand

VEGA is a German maker of level and pressure instruments. Bruno Grieshaber founded the company in 1959 in Triberg in the Black Forest, and it has been based in Schiltach since 1975, still family owned as VEGA Grieshaber KG. VEGA is best known for radar level sensors: it introduced the first two-wire radar level sensor in 1997 and the first 80 GHz radar sensor for bulk solids, the VEGAPULS 69, in 2015.

Seven Star LLC is an independent supplier listing VEGA radar and guided wave radar transmitters, point level switches, pressure transmitters and signal conditioning instruments for buyers in Oman and the GCC. Sensors are matched from the product code on the type label.

VEGA at a glance

Origin	Founded by Bruno Grieshaber in 1959 in Triberg, Germany
Headquarters	Schiltach, Black Forest, Germany (since 1975)
Ownership	Family-owned company: VEGA Grieshaber KG
Milestones	First two-wire radar level sensor (1997), first 80 GHz radar for bulk solids, VEGAPULS 69 (2015), VEGAPULS 6X single radar platform for liquids and solids
Product families	VEGAPULS radar, VEGAFLEX guided wave radar, VEGASWING and VEGAPOINT switches, VEGACAL capacitive probes, VEGABAR and VEGADIF pressure, VEGAMET and VEGADIS signal conditioning

VEGA sensor and instrument series

Series	Type	Typical use
VEGAPULS 6X, VEGAPULS 69, VEGAPULS 64	Process radar level transmitters (80 GHz)	Storage and process tanks, reactors with agitators, silos and bulk solids
VEGAPULS 11, 21, 31, 42	Compact radar sensors	Water and wastewater, simple storage tanks; VEGAPULS 42 with IO-Link for machine integration
VEGAPULS C 21, C 11, C 22, C 23	Radar sensors with fixed cable, IP68	Wet wells, pumping stations, open channels and river levels
VEGAFLEX 81, 82, 83, 86	Guided wave radar (TDR)	Level and interface in liquids, bulk solids, hygienic and high-temperature or high-pressure service (VEGAFLEX 86)
VEGASWING 61, 63, VEGAPOINT 21	Vibrating and capacitive point level switches	Overfill protection, dry-run protection and high or low level alarms
VEGACAL 62 to VEGACAL 67	Capacitive rod and cable probes	Point and continuous level in solids and conductive or adhesive liquids
VEGABAR 82, 83, 28, 29, 38	Pressure transmitters, ceramic or metallic cell	Process pressure and hydrostatic level; compact 18/19 and 28/29/38 versions for utilities
VEGADIF 85	Differential pressure transmitter	DP flow, filter monitoring and level in pressurised vessels
VEGAMET 841, VEGADIS 176	Controller and loop display	Level display, pump control and remote indication of 4-20 mA signals

Where VEGA instruments are used

VEGA radar sensors measure level in crude oil and product tanks, separators, chemical reactors, cement and aggregate silos, grain stores and water reservoirs. Compact cable radars are widely used in wastewater pumping stations and flood monitoring. Because 80 GHz radar focuses a narrow beam, it can measure past internal structures in a tank, and it is not affected by the temperature, pressure or vapour above the product, which suits hot Gulf storage tanks.

Ordering VEGA instruments: what we need

The product code on the type label (for example PS64.XXXXXXX) fixes the measuring range, antenna or probe, process connection, electronics and approvals. Send it with the serial number. For a new measurement add the medium and its dielectric constant if known, tank or silo height and internals, process pressure and temperature, process connection, output (4-20 mA HART, PROFIBUS PA, Modbus or IO-Link), and any hazardous-area or overfill protection approval required.

Facts checked against VEGA company and product information, October 2026.

Browse VEGA products by category: Level Transmitter, Pressure Instrumentation, Controllers and Data Acquisition.

FAQ

Questions about the FX81.ICEAIFAXKMAM VEGA Level Transmitter

Answers from our engineering team on installation, compatibility and integration.

01What is the VEGA FX81?

It is a guided radar (TDR) level transmitter for continuous level measurement in liquids and bulk solids.

02What configuration is this unit?

FX81.ICEAIFAXKMAM with a 2808 mm exchangeable 316L rod probe, NPS 4 Class 300 RF flange, FKM seal, and 4-20 mA/HART output.

03What is the process temperature range?

The FKM seal allows process temperatures from -40 to +150 C.

04Which approvals does it carry?

It is approved IEC Ex ia IIC T6...T1 with Ga, Ga/Gb, and Gb suitability for hazardous areas.

05What is the housing protection?

The plastic single chamber housing provides IP66/IP67 protection with an M20x1.5 cable entry.