Xtralis VSP-964-03 VESDA-E Smoke Detection Chamber (MK3)

Overview

The Xtralis VSP-964-03 is a genuine VESDA-E Smoke Detection Chamber (MK3) spare part, designed as the field-replacement chamber for VESDA-E VEU aspirating smoke detector units built on the GA3 detector platform (units with serial numbers in the 97xxxxx, 106xxxx, 107xxxx or 110xxxx ranges). As the heart of the VESDA-E detection engine, the VSP-964-03 chamber houses the laser-based scattering optics that give VESDA-E its extremely early smoke detection capability, and it is supplied as a certified replacement part for maintenance, recalibration, or repair of existing VESDA-E installations.

Seven Star LLC supplies the genuine Xtralis VSP-964-03 VESDA-E smoke detection chamber to fire protection contractors, system integrators, and facilities teams across Oman and the GCC. As a partner sourcing authentic Xtralis/Honeywell aspirating smoke detection spares, Seven Star supports critical-infrastructure customers in Muscat, Sohar, Duqm, and Salalah who need certified replacement chambers to keep VESDA-E very early smoke detection (VESDA) systems in full working order and in compliance with fire code testing requirements.

Measurement and Operating Principle

Inside the Xtralis VSP-964-03 chamber, air samples drawn continuously through the facility’s pipe network by the VESDA-E unit’s aspirator are passed through a laser-illuminated detection cell. The chamber’s optics use light-scattering technology, where suspended smoke particles in the sampled air scatter the laser beam onto a photodetector; the resulting scatter signal is processed against a calibrated baseline to identify a genuine smoke event long before it reaches concentrations that would trigger a conventional point-type smoke detector. This aspirating, laser-based approach is what allows VESDA-E systems to detect incipient fires at the earliest possible stage, often before visible smoke or heat is present.

Because the detection chamber is a precision optical assembly, it is calibrated at the factory and is designed to be replaced as a complete unit rather than field-serviced internally. The VSP-964-03 (MK3 revision) is engineered as a direct fit into GA3-generation VESDA-E VEU housings, restoring full detection sensitivity and eliminating drift, contamination, or component wear that can occur in chambers that have been in continuous service for extended periods in dusty or high-particulate environments such as data halls, warehouses, and industrial process areas.

Engineering Design

The Xtralis VSP-964-03 chamber is built for straightforward field exchange by a qualified fire-systems technician, without requiring recommissioning of the entire VESDA-E detector or the associated pipe network. Its MK3 design incorporates Xtralis/Honeywell’s refinements to optical stability and contamination resistance, extending calibrated service life between chamber replacements. The chamber integrates directly with the VEU unit’s internal air-management and electronics assembly, preserving the detector’s programmed alarm thresholds and system addressing once installed.

Compatibility is strictly generation-specific and is not a supersession chain: the Xtralis VSP-964-03 is the MK3 chamber for GA3 detector bodies only, while the plain VSP-964 is the chamber for the earlier GA2 generation (a part number Xtralis now lists as obsolete) and GA4 detector bodies take the MK4 chamber, VSP-964-04. A newer chamber does not replace an older one across generations, so technicians must confirm the host unit’s serial number range before ordering a replacement chamber. This ensures the optical and mechanical tolerances of the chamber match the surrounding VEU electronics exactly, preserving the detector’s certified sensitivity classes and alarm response times as originally commissioned.

Xtralis VSP-964-03 Key Features

• Genuine Xtralis VESDA-E Smoke Detection Chamber, MK3 revision, part number VSP-964-03
• Direct-fit replacement chamber for GA3-generation VESDA-E VEU aspirating smoke detectors
• Laser-based light-scattering detection technology for very early smoke detection
• Field-exchangeable design, no full detector recommissioning required
• Restores factory-calibrated detection sensitivity after chamber wear or contamination
• Generation-specific fit: GA2 bodies take VSP-964 (obsolete), GA3 bodies take VSP-964-03, GA4 bodies take VSP-964-04
• Supports continuous air-sampling pipe network operation without system downtime beyond the swap
• Designed for critical environments including data centers, warehouses, and industrial facilities

Industrial Applications

The VSP-964-03 detection chamber is specified for maintenance and repair of VESDA-E aspirating smoke detection systems protecting data centers, telecom exchanges, warehouses, cleanrooms, archive and heritage buildings, and industrial process areas where very early warning fire detection is essential to protect high-value assets and enable orderly evacuation or process shutdown. Because aspirating systems are typically installed in spaces where conventional point detectors would be too slow or impractical — raised floors, high ceilings, and dusty industrial atmospheres — keeping the detection chamber in calibrated condition is critical to maintaining system reliability.

Seven Star LLC supports fire protection contractors and facilities management teams across Oman’s oil and gas, logistics, data center, and commercial sectors with genuine Xtralis VSP-964-03 chambers for scheduled VESDA-E maintenance programs, ensuring continued compliance with NFPA 72 and local Civil Defence fire detection testing requirements in Muscat, Sohar, and Salalah.

Xtralis VSP-964-03 Technical Specifications

Host Detector Performance the Chamber Must Deliver

The chamber the Xtralis VSP-964-03 replaces is the optical core of a VESDA-E VEU detector, and the VEU’s published performance defines what a correctly functioning chamber has to sustain: a sensitivity range of 0.001% to 20.0% obscuration per metre, four independently programmable alarm thresholds (Alert, Action, Fire 1 and Fire 2), and inherent absolute calibration, so the reported obscuration figure is a true measurement rather than a relative index. A single VEU can protect up to 2,000 m² through as many as four inlet pipes and up to 800 m of total pipe run, with ultrasonic airflow sensing on each port and an event log holding up to 20,000 timestamped records. Because one detector carries that much protected area, chamber condition is a single point of dependence for a large volume, and fitting a genuine VSP-964-03 restores the detector’s full sensitivity range instead of masking degradation by raising thresholds.

Generation Compatibility Notes

Xtralis identifies the detector generation from the host unit’s serial number, and the chambers are not interchangeable between generations. GA3 bodies take the MK3 chamber, part number VSP-964-03; GA4 bodies take the MK4 chamber, VSP-964-04; and the plain VSP-964 chamber belongs to the earlier, now obsolete GA2 generation. Ordering against the serial number rather than the model name is therefore the only reliable method. Chamber replacement should be performed by a technician trained on VESDA-E, and the detector returned to service only once airflow readings and alarm thresholds have been verified against the values recorded when that pipe network was commissioned.

Request a Quote

Contact Seven Star LLC for pricing, lead time, and stock availability on the genuine Xtralis VSP-964-03 chamber — Xtralis VSP-964-03 VESDA-E smoke detection chamber in Oman. Please confirm your host VEU unit’s serial number range so our team can verify GA3 compatibility before dispatch.

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