Portable and wireless
Honeywell BW™ Ultra
The BW™ Ultra is a five-gas detector designed specifically for sampling and monitoring confined spaces, before and after entry. It is the instrument for permit-to-work situations rather than for general personal protection.

What it is
Purpose and use
Confined space work has a different measuring task from wearing a detector on a belt. Before anyone enters, the atmosphere inside has to be assessed from outside — which requires an instrument that can draw a sample through a hose at several depths, because gases stratify. After entry, the same instrument continues to monitor.
Five measuring channels matter here because a confined space frequently combines oxygen deficiency or enrichment, a combustible gas, and more than one toxic component. Compromising on the number of channels is how pre-entry testing produces a reassuring result that is wrong.
Technical description
- Five-gas detector
- Designed for sampling and monitoring confined spaces before and after entry
- Continuous monitoring during the work following pre-entry assessment
Stated according to the current manufacturer documentation. Binding data for a specific configuration is confirmed with the quotation.
Application
Where it is used
- Tank, vessel and column entry in refineries and chemical plants
- Sewer, shaft and pit work
- Ship and barge tank inspection
- Silo and hopper entry in food, feed and bulk handling
Accessories and spare parts
- Sampling hose and probe accessories for pre-entry testing
- Docking, test gas and calibration accessories
- Replacement sensors and filters
Service by VERTEX GmbH
What we deliver around this product
We specify the gas combination against the actual entry scenario, supply the sampling accessories that are usually forgotten in the order, and set up the calibration and bump test routine that a permit-to-work system has to be able to rely on.
Honeywell and the product names on this page are trademarks of Honeywell International Inc. VERTEX GmbH is an independent supplier and service provider in Krefeld, Germany.
FAQ
Questions about Honeywell BW™ Ultra
Why measure at several depths in a confined space?
Because gases stratify by density. A heavy gas collects at the bottom of a vessel and a light one under the roof, so a single measurement at the manhole can be clean while the working level is not. A pre-entry instrument with a sampling hose is what makes measuring at several depths possible.
Is a five-gas instrument always necessary for entry work?
No, but the number of channels has to cover the credible hazards of that specific space — oxygen plus combustible gas plus every toxic component that the previous contents or the surrounding process can produce. The channel count follows the risk assessment, not the budget.
Enquiry
Send us your specification
Send us your requests with technical specifications to receive a prompt reply from our industry specialists. For gas detection, add the gases and the zone classification.
Or by email: purchasing@vertex-group.de