Z SIEGER 2104B2111 RX SHORT FLAMMEBLE DETECTOR 32VDC 10W SEARCHLINE EXCEL #4

Brand & Model: Z-SIEGER (now part of MSA Safety). The 2104B2111 is the specific model/part number for the SEARCHLINE Excel or similar series.

Type: RX – This typically denotes a “Receiver” unit. In open-path detection, an RX unit works with a separate TX (Transmitter) unit. The beam of infrared light from the TX passes through the air to the RX. The presence of gas along the path absorbs the light, triggering an alarm. This particular item is the receiving end of the system.

Detection Principle: SHORT – Indicates a Short-Path Open-Path Gas Detector. It uses infrared (IR) absorption to detect gas over a defined line-of-sight path (typically ranges from 0 to 30 meters, but this unit specifies a shorter standard range). It measures the average gas concentration along the entire beam path (in LEL-meters).

Target Hazard: FLAMMABLE – Specifically calibrated to detect flammable gases and vapors (e.g., methane, propane, hydrocarbons).

Power Requirements: 32VDC, 10W – Operates on a 32 Volt DC power supply with a power consumption of 10 Watts.

Product Line: SEARCHLINE – MSA’s premier brand for open-path gas detection systems, known for high reliability and performance.

Certification: BAS 98ATEX2165Z – This is the critical safety certification.

• BAS: Likely the Notified Body that issued the certificate.

• ATEX: Indicates compliance with the European Union directives for equipment intended for use in Explosive Atmospheres.

• 2165Z: The certificate number.

• #4: Possibly refers to a specific appendix or condition within the certificate, or a hardware revision.