VESDA VSP-036 — VLI Ultrasonic Flow Manifold Spare, the Xtralis replacement ultrasonic flow-sensing manifold for VESDA VLI industrial aspirating smoke detectors.
In the VLI, sampled air passes four sets of ultrasonic flow sensors at the detector air inlets before the Intelligent Filter; the detector compares those readings with a sensor set in the unfiltered path to track filter loading. This spare measures the airflow entering from the pipe inlets.
- Fits: VESDA VLI-880 and VLI-885 (Xtralis VLI spare parts list)
- Function: measures airflow entering from the pipe inlets
- VLI detector: four sets of ultrasonic flow sensors at its air inlets
- VLI network: minimum 40 l/min total and 20 l/min per pipe; 360 m (1,181 ft) total pipe
- VLI detector: 18–30 VDC, IP66, ambient 0 to 38 °C (32 to 100 °F)
The other VLI spares are separate parts: VSP-030 Intelligent Filter, VSP-031 Secondary Foam Filter, VSP-032 Aspirator, VSP-033 Chamber Assembly, VSP-034 VESDAnet Card and VSP-035 Remote Display Module.
