Searchline Excel Plus

Flammable Hydrocarbon gas detector. The Searchline Excel™ Plus Flammable Hydrocarbon gas detector delivers unsurpassed uptime with robust detection in some of the harshest conditions.

List of Benefits

  • RELIABLE DETECTION : Fast response to flammable Hydrocarbon gas even in low visibility conditions. Advanced diagnostics including window clarity and alignment accuracy to enable maximum uptime and continuous site protection.
  • HEAVY DUTY OPERATION : Operates in harsh environments to maintain coverage. Advanced transmitter and receiver optics means that monitoring continues in thick fog long after other detectors cease to provide coverage.
  • AT-A-GLANCE INSTRUMENT STATUS : High Visibility LED HALO ring provides clear indication of device status.Automatic reporting with full logging of alarms, events and maintenance actions.
  • EASY TO USE : Low maintenance and calibration free. New Honeywell Fixed Platform Universal Mount and advanced alignment scope makes for easy mechanical installation.
  • MULTIPLE OUTPUTS : Multiple outputs including 4-20mA, Relays, HART®, Modbus and Bluetooth® communication. Easily integrate the Searchline Excel™ Edge into your existing network.
  • CONNECTIVITY : Incorporates Bluetooth® connectivity for simplified, non-intrusive set-up and maintenance. Just pair the Searchline Excel™ Plus with our intrinsically safe, ruggedized mobile phone; then use the Honeywell Fixed Platform App to interact with the detector.



Ensure optimal fire and gas safety by deploying cutting-edge optical gas detection that can see through even thick fog better than any other open path gas detectors whether NDIR or laser-based.

The Searchline Excel™ Plus is a medium-range gas detector designed for global oil and gas applications, upstream and downstream, onshore and offshore that protects your people, your facilities and your systems from combustible gas leaks.

SpecificationDetail Description
Primary Gases (Performance approved 1, 2) Excel™ Plus will respond to a wide range of Hydrocarbon Gases as most of these gases absorb IR in the required wavelengths = Methane1,2, Ethane1, Propane1,2, Butane1, Pentane1, Hexane, Ethylene1, Propylene1; 1FM Performance Approved; 2DNV approved
Range 0–5 LEL.m; for ppm.m equivalents see manual
Recommended Alarm Setting Low 1 LEL.m; High 3 LEL.m; for ppm.m equivalents see manual
Recommended Minimum Alarm Setting LEL.m; for ppm.m equivalents see manual
Path Length 2 m to 120 m (6 ft to 393 ft)
Speed of Response T90 less than 3 seconds
Analog Output Signal 4–20 mA Normal operation, 1 mA Fault*, 2 mA Inhibit, 3 mA Warning, 21 mA Overrange. Linearized 0–5 LEL.m
Environmental Operating Temperature -55°C to +75°C (-67°F to 167°F). DNVGL-CG-0339 Location Class B
Storage Temperature Range -55°C to +75°C (-67°F to 167°F). DNVGL-CG-0339 Location Class B
Power Supply 24 Vdc nominal (18 Vdc to 32 Vdc)
Power Consumption (Average RMS) Transmitter Above +30°C (+86°F) = 3.8 W; +30°C to -30°C (+86°F to -22°F) = 5.6 W; Below -30°C (-22°F) = 11.8 W Receiver Above +30°C (+86°F)= 3.0 W; +30°C to -30°C (+86°F to -22°F) = 4.8 W; Below -30°C (-22°F) = 7.4 W
Output Signals 4–20 mA with HART®, Fault relay, Alarm 1 relay, Alarm 2 relay, Modbus, Bluetooth® (range up to 20 m (66 ft), depends on mobile device and environmental conditions)
Relay Outputs Max. 32 Vdc/ac, max. 2 A resistive load
Humidity 0–99% Relative Humidity Non-condensing. DNVGL-CG-0339 Location Class B
Pressure 91.5-105.5 kPa (915–1055 mBar, non-compensated)
Repeatability ±0.4 LEL.m; for ppm.m equivalents see manual
Temperature Drift -40°C to +65°C (-40 °F to 149 °F) ±0.2 LEL.m @ zero ±0.5 LEL.m @ 3 LEL.m
Warm-up Time Less than 5 minutes (operational), less than 1 hour (fully stabilized)
Internal Battery Cell TLH-2450, 10-year lifetime (replaced only by authorized service)
Weight Searchline Excel™ Plus
Dimensions Searchline Excel™ Plus
Ingress Protection IP 66/67 (Type 4X, in accordance with NEMA 250); Resistance to salt mist and sulfuric atmosphere (15-60 minutes exposure to salt air/mist; 15-60 minutes to sulfuric atmosphere)

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