Searchline Excel Open Path Infrared Gas Detector
Infrared Transmitters

World-renowned infrared open path flammable gas detector offering unrivalled performance and sensitivity.
Features & Benefits
Fast speed of response provides earliest warning
High sensitivity allows low alarm set points
Works in inert atmospheres
Quick Specs
Response speed: T90 less than 3 seconds (under normal operating conditions)
Range: 0 to 5 LEL m.

Operating temperature: -40° to +65°C (-40° to 150°F)

Product Overview

The Searchline Excel is the World’s best selling infrared open path gas detector with over 6,000 units installed in challenging applications throughout industry. From the Arctic Circle to Middle Eastern Deserts, customers have repeatedly selected the Searchline Excel as their preferred choice.

The fundamental design of Searchline Excel has remained the same since its original launch and it continues to lead the field.  

Searchline Excel is totally immune to interference from sunlight or any other sources of radiation such as flare stacks, arc welding or lightning.

The patented optical design used in Searchline Excel has proven itself as the only solution available that fully addresses all the challenges of open path gas detection. Unlike some competitive devices, it does not try to hide fundamental design inadequacy with the use of software masks that can compromise the unit’s ability to detect gas. 

Searchline Excel employs a patented double band pass filter that fully compensates for all types of fog and / or rain, thereby allowing it to continue to operate accurately and reliably in all climatic conditions.

Additional Features and Benefits:

Why open path gas detection?
Open path detectors complement the use of individual point detectors and offer many significant benefits including:

•  Wider area coverage - most likely to pick up any leak
•  Very high speed of response
•  NO unrevealed failure modes - no possibility of blocked gas path to detector
•  Detector location not as critical
•  Indicates size of hazard

Sample and reference detector alignment

•  Reduced sensitivity to alignment
•  Guaranteed performance
•  Reduced sensitivity to partial obscuration

Improved hand-held software

•  Simple confirmation of alignment
•  Visual indication of target and current signal levels
•  Compatible with existing systems

Improved telescope

•  High Power Rifle Telescope
•  Easier to align with greater zoom and magnification
•  Robust shock resistant design

Features & benefits

•  Fast speed of response provides earliest warning
•  High sensitivity allows low alarm set points
•  Alignment free design makes installation simple
•  Duct flex and vibration tolerance keeps  the system online
•  Integral functional gas test facility allows for simple system check
•  Contamination resistant optics reduce the need for unscheduled maintenance
•  Not affected by interference from water vapor
•  Immune to catalytic poisons
•  Works in inert atmospheres

Searchline Excel is totally immune
to interference from sunlight or any
other sources of radiation such as flare
stacks, arc welding or lightning.
This is achieved by using a xenon flash lamp
that is actually brighter than the sun at the
infrared detection wavelengths and solid state
detectors with a wide dynamic range.
The lamp is also modulated to have a unique
pulse duration and shape. The receiver then
uses high speed digital signal processing to
validate that all the signals received have this
unique signature and rejects any extraneous
signals.

Accessories
1. Deluge shield / sunshade
2. True alignment system
3. Gassing cell
4. Hand-held interrogator
5. Optical gas test filters
6. SHC protection device

Specification
Available Gases Methane, Ethane, Propane, Butane, Pentane, Ethylene, Propylene, Butadiene
Range 0 to 5 LEL.m
Recommended Alarm Settings (Low) 1.0 LEL.m; (high) 3.0 LEL.m
Path Lengths Short Range 5m to 40m (15ft to 130ft.), Medium Range 40m to 120m (130ft to 390ft.) and Long Range 120m to 200m (390ft to 650ft.)
Speed of Response T90 less than 3 seconds. (under normal operating conditions)
Output Signal 4-20mA (maximum loop resistance 600 ohms; source & sink available) and RS485
21mA Over range
4-20mA Normal operation (0 to 5 LEL.m)
3mA(1) Dirty optics
2.5mA(1) Beam blocked
2mA(1) 0mA Fault
Digital Output Modbus RS485 multi drop. Using DX100 (M) or XNX Universal Transmitter with Modbus option
Operating Temperature -40°C to +65°C (-40°F to 150°F)
Operating Humidity 0 to 99% RH (non-condensing)
Operating Pressure 91.5 to 105.5 KPa (915 to 1055 mbar) (non-compensated)
Warm-up Time Less than 5 minutes (operational), or less than 1 hour (fully stabilised)
Power Supply 18V to 32VDC
Power Consumption Short Range Tx: 3.5W / 5.0W *maximum. Medium and Long Range Tx: 10W / 13W* maximum. Rx: 8W maximum.
Enclosure Material 316 stainless steel
Weight (inc. mounting bracket) Short Range TX: 3.5kg Medium and Long Range TX: 7kg RX: 3.5kg
Vibration 2 to 60Hz, max ptp amplitude 1mm.
Misalignment Tolerance Short Range ±0.5º (±~35cm at 40m). Medium Range ±0.5º (±~104cm at 120m). Long Range ±0.5º (±~170cm at 200m)
EMC Standards EN50270
Performance Approval FM performance approved
Safety Approval ATEX
Transmitter:
II 2 G Ex d op is IIC T5 (Tamb -40°C to +65°C) Gb
II 2 G Ex d op is IIC T6 (Tamb -40°C to +40°C) Gb
Receiver:
II 2 G Ex d IIC T5 (Tamb -40°C to +65°C) Gb
II 2 G Ex d IIC T6 (Tamb -40°C to +40°C) Gb
IECEx
Transmitter:
Ex d op is IIC T5 (Tamb =-40°C to +65°C) Gb
Ex d op is IIC T6 (Tamb =-40°C to +40°C) Gb
Receiver:
Ex d IIC T5 (Tamb -40°C to +65°C) Gb
Ex d IIC T6 (Tamb -40°C to +40°C) Gb
UL: Class 1 Groups B, C, D and Class 1 Zone 1 AEx d IIB + Hydrogen (Amb -40°C to +65°C)
CSA: Class 1 Div 1 groups B, C, D, T5 and Exd IIC T5 (Amb -40°C to +65°C)
FM: Class 1 Div 1 groups B, C, D & T5 (Tamb -40 to +65°C)
Other: GOST
Independently assessed to IEC61508
IP Rating IP66 and IP67
(1) User programmable.
* Turboheating activated (standard feature; user selectable). This is recommended for the most severe weather conditions.

Gas Detector Spares:

2104B2391 - Short Range Telescope (Bayonet Fitting)

2104B2322 - Medium / Long Range Telescope (Callipers)

2104B0300 - Searchline Excel Isolation Kit Short Range

2104B0310 - Searchline Excel Kit Medium/Long Range

2104B2301 - Mounting Bracket Short Range And Insul. Kit

2104B2302 - Mounting Bracket Long Range And Insul. Kit

2104D0237 - Mounting Plate

2104B2071 - Short Range Transmitter ATEX

2104B2081 - Medium Range Transmitter ATEX

2104B2091 - Long Range Transmitter ATEX

2104B2111 - Short Range Receiver ATEX Source

2104B2112 - Short Range Receiver ATEX Sink

2104B2131 - Medium Range Receiver ATEX Source

2104B2132 - Medium Range Receiver ATEX Sink

2104B2151 - Long Range Receiver ATEX Source

2104B2152 - Long Range Receiver ATEX Sink

2104B3001 - Short Range Transmitter UL

2104B3011 - Medium Range Transmitter UL

2104B3021 - Long Range Transmitter UL

2104B3101 - Short Range Receiver UL Source

2104B3102 - Short Range Receiver UL Sink

2104B3111 - Medium Range Receiver UL Source

2104B3112 - Medium Range Receiver UL Sink

2104B3121 - Long Range Receiver UL Source

2104B3122 - Long Range Receiver UL Sink

2104B3201 - Short Range Transmitter CSA

2104B3211 - Medium Range Transmitter CSA

2104B3221 - Long Range Transmitter CSA

2104B3301 - Short Range Receiver CSA Source

2104B3302 - Short Range Receiver CSA Sink

2104B3311 - Medium Range Receiver CSA Source

2104B3312 - Medium Range Receiver CSA Sink

2104B3321 - Long Range Receiver CSA Source

2104B3322 - Long Range Receiver CSA Sink

2104B3522 - Long Range Receiver Inmetro Sink

2104B3401 - Short Range Transmitter Inmetro

2104B3411 - Medium Range Transmitter Inmetro

2104B3421 - Long Range Transmitter Inmetro

2104B3501 - Short Range Receiver Inmetro Source

2104B3502 - Short Range Receiver Inmetro Sink

2104B3511 - Medium Range Receiver Inmetro Source

2104B3512 - Medium Range Receiver Inmetro Sink

2104B3521 - Long Range Receiver Inmetro Source