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MAN0530 Issue 15 - 07/17
2104M0506
6.1 SYSTEM
Available Gases
Methane
: FM Performance Approved
1
Range
0 - 5 LELm
Recommended
Low 1 LELm
Alarm Setting
High 3 LELm
Minimum Alarm
0.5LELm
Setting
Path Length
Short Range:
5 - 40m (15 - 130ft)
Speed of Response
T90 less than 3 seconds
Output Signal
4 – 20 mA
Normal operation
(linearised 0 – 5 LELm)
*Searchline Excel will indicate Beam Block after 30 s without signal. After a further 120 s it will indicate Fault. These values are
programmable; please refer to Appendix A for details. To comply with FM performance approval, the maximum value for Time to Block
is 200 s.
Note: For safety reasons, if Searchline Excel loses signal while measuring a gas reading above its internal Alarm threshold (default
1 LELm) it will not indicate beam block. Instead it will hold the previous gas reading until it is again able to measure the current gas
concentration. Operator intervention may be required to remove a blockage from the beam.
Operating and
40°C to +65°C (-40°F to +150°F). DNVGL-CG-0339 Location Class B
Storage Temperature
Humidity
0 – 99%RH Non-condensing . DNVGL-CG-0339 Location Class B
Pressure
91.5kPa – 105.5kPa (915 – 1055mBar, non-compensated)
Repeatability
±0.4LELm
Temperature Drift
±0.2LEL.m @ zero
(-40°C to+65°C)
±0.5LEL.m @3LEL.m
Warm-up Time
Less than 5 minutes (operational), Less than 1 hour (fully stabilised)
Power Supply
18 to 32Vdc
Power Consumption
Transmitter
Short Range: 3.5/5* W max
Receiver
8W maximum
Inrush Current
Transmitter
Short Range: < 0.3 A
Receiver
< 0.6 A
Enclosure Material
316 Stainless Steel
Weight
Transmitter
Short Range: 3.5kg
Receiver
3.5kg
Vibration
2 – 60Hz, maximum peak to peak amplitude 1mm FM 10 - 30 Hz, 1 mm; 31 - 150 Hz, 2g. DNVGL-CG-0339
location classes A and C when used with Maritime Bracket and associated hardware (see Appendix 4).
Divergence/
Short Range:
Misalignment
±0.5° (~±35cm at 40m)
Tolerance
IP rating
IP66/67
EMC / EMI
EN 50270 / Immune to FM Modulated Portable Radio Transmitters (5 W at 1 m, 150-179 MHz and
450-470 MHz) . DNVGL-CG-0339 Location Classes A and B.
6. SPECIFICATIONS
, Ethane
, Propane
1,2
1
1,2
0 mA
Fault
* Turbo heating activated (below 0°C)
OPEN-PATH
, Butane
, Pentane, Ethylene, Propylene, Butadiene
1
: DNV approved
2
Medium Range:
40 - 120m (130 - 390ft)
2 mA Inhibit
2.5 mA Beam block*
Medium / Long Range: 10/13* W max.
Medium/Long Range: < 0.9 A
Medium / Long Range: 7.0kg
Medium Range:
±0.5° (~±105cm at 120m)
68
Searchline Excel
Long Range:
120 - 200m (390 - 650ft)
3 mA Low signal
21 mA Overrange
Long Range:
±0.5° (~±175cm at 200m)
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