Across power, petrochemical and construction projects the decision separates into two layers — the harness itself, and the monitoring device added to it. Getting the order wrong means either specifying a monitor for a harness that should not have been selected, or selecting a harness that no monitor can be fitted to without changing its structure.
The harness itself: selected by work category and body weight
GB 6095-2021 sorts harnesses by work category into three types: Q for restraint, W for work positioning on a pole or structure, and Z for fall arrest. Only category Z carries the function of holding a person safely after a fall, and the standard requires its body support to be a full-body type — a half-body or single waist belt is not an equivalent.
A second boundary gets overlooked more often than the categories: the standard applies to users whose body weight plus carried load does not exceed 100 kg. Above that figure there is no compliant upgrade inside the standard. The configuration falls outside its scope and needs a project-specific assessment rather than a different catalogue number.
The monitoring device: does it fit the harness you already issue?
A smart harness is not a replacement harness. It is a monitoring device fitted to the harness the crew already wears, which makes compatibility the first question rather than feature count: will it fit the harness types in service on your site, and will the records land in the format your management process expects?
The SBM3000 series multi-state monitor is designed for retrofit. It fits single-hook and double-hook harnesses as well as fall arresters and self-locking devices without altering the load-bearing structure of the harness, and a multi-axis posture sensor classifies the attachment state of five tool types — pole strap, secondary lanyard, double hook, fall arrester and self-locking device — raising an alarm at the moment of a violation and filing the record automatically.
Two questions, in this order. Which category and weight range does the job require, and can the monitor be fitted to the harness without touching its load-bearing structure? Ask them in that order and the specification writes itself.