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Brand: VEGA
VEGA VEGAPULS Air 41 Autarkic Radar Level Sensor G1½ Thread
Description
The threaded wireless radar for mobile silos and liquid tanks
The VEGAPULS Air 41 is the threaded-connection version of VEGA’s autarkic radar sensors. It uses a lithium battery and a radio module for NB-IoT, LTE-M or LoRaWAN transmission, so it can be mounted on a mobile silo or storage tank with no cable at all. VEGA recommends it for all stand-alone applications with bulk solids and liquids, in particular mobile bulk-solids silos holding dry mortar, concrete or plaster and liquid tanks of all kinds, and notes that typical measurements under average conditions give a battery life of over eight years. The sensor measures up to 20 m with a deviation of 2 mm and an 8° beam.
Technical specifications
| Parameter | Specification |
|---|---|
| Type | VEGAPULS Air 41, autarkic radar sensor with radio transmission |
| Measuring range | Up to 20 m (65.62 ft) |
| Deviation | ≤ 2 mm |
| Beam angle | 8° |
| Process fitting | Thread G1½, 1½ NPT, R1½ |
| Process pressure | -1…+2 bar (-100…+200 kPa) |
| Process temperature | -20…+60 °C (-4…+140 °F) |
| Ambient, storage, transport | -20…+60 °C (-4…+140 °F) |
| Radio technology | NB-IoT (LTE-Cat-NB1), LTE-M (LTE-CAT-M1), LoRaWAN |
| Protection rating | IP66/IP68 (0.2 bar) acc. to IEC 60529, Type 6X acc. to NEMA |
| Power supply | Optional integrated 3.6 V lithium battery, replaceable; battery life > 8 years in typical measurement tasks |
| Dimensions (sheet drawing) | Housing diameter about 102 mm, height about 102 mm |
| Adjustment | Bluetooth module; smartphone/tablet app, PACTware/DTM, VEGA Inventory System |
Choosing the 41 over the 23 and 42
VEGA’s type overview separates the Air series by vessel: the Air 23 (3 m range, adhesive or tension-belt mounting) is for IBC and plastic vessels, the Air 41 has a threaded G1½ fitting for a mounting socket, and the Air 42 carries a DN 80 compression flange and a 4° beam for 30 m. The 41 therefore fits any existing 1½” boss on a metal or plastic tank or silo, reducing the mechanical work to a standard thread. A Bluetooth module allows operation with the VEGA Tools app or PACTware via a USB adapter.
Remote readout and limits
Measured values travel by cellular or LoRaWAN radio to an asset-management system such as the VEGA Inventory System, which VEGA says can also send parameter changes back over a backward channel depending on version. Because the process pressure limit is only 2 bar and the temperature range -20 to +60 °C, the Air 41 suits atmospheric silos and tanks. Confirm radio network availability and any local approvals for radio equipment before ordering.
For stand-alone fleets, such as tanks that are refilled by road tanker, the sensor can report fill states into an inventory portal and avoid manual dipping. The sheet shows the same radar technology as the wired VEGAPULS sensors, an 80 GHz W-band system, which the product information describes as unaffected by dust, noise, buildup and condensation. No approvals are listed in the product information, so confirm hazardous-area suitability with VEGA, and the radio equipment must meet local regulations.
Documents and quotation
The official VEGA VEGAPULS Air 41 specification sheet (65170-EN, version 251216) is attached to this page for download and covers the technical data, dimensions and wiring summarised above.
For a quotation, tell us the medium, tank or channel dimensions, output signal, hazardous-area requirement and quantity. Seven Star LLC, an independent supplier in Muscat, will respond with availability and a commercial offer; other level instrumentation is on our site. Always verify the complete order code against VEGA’s configurator before you place an order.
Datasheets & Documents
- Datasheet VEGA VEGAPULS Air 41 Specification Sheet (65170-EN) Download
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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.
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Frequently Asked Questions
What is the range of the VEGAPULS Air 41?
Up to 20 m with a deviation of 2 mm and an 8° beam.
How long does the battery last?
VEGA states over eight years for typical measurement tasks under average conditions.
Which fittings are available?
Thread G1½, 1½ NPT or R1½ in PVDF.
Which networks are supported?
NB-IoT, LTE-M and LoRaWAN.
What are the process limits?
-1…+2 bar and -20…+60 °C.
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