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Honeywell 2104B2111 RX SHORT short-range infrared gas receiver product photographs

Honeywell 2104B2111 RX SHORT short-range infrared gas receiver

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Honeywell Searchline Excel

2104B2111 RX SHORT — short-range infrared gas receiver

2104B2111 RX SHORT is the current-source short-range receiver for a Searchline Excel open-path hydrocarbon gas detector. It works with a correctly matched transmitter across a 5–40 m optical path and sends the gas reading through a 4–20 mA output.

HoneywellSearchline ExcelShort-range IR receiver

Sales managerTiffany Guan

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2104B2111 RX SHORT product profile

Product familySearchline Excel

Exact model2104B2111 RX SHORT

Optical path5–40 m, matched short-range system

Analogue output4–20 mA, current source

Receiver supply18–32 V DC at the detector

Receiver power8 W maximum

Brand:
Honeywell
Item NO.:
2104B2111 RX SHORT
Part Number:
Weight:
Dimensions:
Manufacture Year:
Place of Origin:
Certification:
Description:

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Sales managerTiffany Guan

WhatsApp+86 18030235313

Emailsales2@mooreplc.com

2104B2111 RX SHORT functions and installation

The 2104B2111 RX SHORT receiver compares sample and reference infrared signals to measure hydrocarbon absorption along the beam. It is one component of an aligned detector installation, not a self-contained point sensor or a complete transmitter-and-receiver package.

Optical receptionReceives the beam from the short-range transmitter and separates measurement and reference channels.

Gas-signal processingConverts path-integrated hydrocarbon absorption into the configured analogue gas signal.

Control-system interfaceProvides a current-source signal to the correctly designed receiving input and field wiring.

Commissioning diagnosticsSupports the approved interrogator for alignment, setup and diagnostic checks.

Installation and selection boundaries

The 5–40 m value is transmitter-to-receiver separation, not the diameter of a point-sensor coverage area.
Normal gas indication and fault or inhibit states must remain distinct in the controller configuration.
An ATEX ordering description does not replace inspection of the actual certification label and site hazardous-area requirements.

Official product data

2104B2111 RX SHORT key specifications

Ordering-reference role	Short-range receiver; ATEX current-source version
Measurement principle	Open-path infrared absorption of hydrocarbon gases
Short-range path	5–40 m between matched transmitter and receiver
Normal analogue signal	4–20 mA; normally scaled to 0–5 LEL·m
Supply at the detector	18–32 V DC, including field-cable voltage drop
Receiver consumption	8 W maximum
Local service communication	RS485 connection for the associated handheld interrogator
Enclosure material	316 stainless steel
Ingress protection	IP66/67; a blocked optical beam remains a fault condition

Honeywell Searchline Excel Technical Handbook, 2104M0506, MAN0530 Issue 15, July 2017: sections 2, 3, 4 and 6; Appendix C, page 114.

Pre-order check 01

Installation environment

Prepare a controlled installation of 2104B2111 RX SHORT using the accepted circuit and commissioning records.

Have trained personnel verify the area classification, safe work controls and actual equipment label before installation.
Inspect the optical windows, mounting rigidity and unobstructed beam route; retain alignment adjustment access.
Check protective earth, screened field cabling, current-source loop wiring and the voltage available at the receiver.
Complete the approved alignment, zero and functional checks under controlled alarm handling; document restoration of normal monitoring.

Retain the approved installation drawing and record the controlled acceptance checks.

Pre-order check 02

Compatibility confirmation

Match the complete item, actual connections and required installed function.

Complete receiver identity: Match 2104B2111 RX SHORT, the fitted certification label and the recorded modification state.
Optical partner: Use a short-range transmitter and a clear 5–40 m path; do not assume range interchangeability.
Electrical input: The receiving controller circuit must accept a current-source 4–20 mA signal and the documented status levels.
Power design: Allow for receiver consumption and field-cable drop so that 18–32 V DC is present at the detector.
Test accessories: Match functional-test equipment and expected responses to the receiver modification state and approved maintenance procedure.

Use trained personnel for installation and commissioning. Match the current-source receiver, short-range optical path, actual approval label and modification-dependent test procedure.

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