705 high temperature combustible sensor – 150°C – UL / 3/4 in. NPT threads
$792.00
Description
705 Combusible Gas Sensor
The 705 combustible gas sensor is a low cost, explosion proof sensor
assembly, fitted with poison-resistant combustible gas detection elements.
Fully encapsulated, it is designed for use in hazardous locations. The sensor
is electro-catalytic and consists of 2 beads of refractory oxide, formed on a
fine platinum wire coil. The active bead is coated with a catalyst material,
while the reference bead is glass coated. In the presence of gas, the
catalyst coated bead promotes the oxidation of the gas, causing it to heat
up and increase in electrical resistance. This change of resistance, relative
to the reference bead, can be measured and is in direct proportion to the
concentration of combustible gas.
Excellent Performance
• Certified for hazardous location operation up to +150°C (+302°F)
• Alarm trip points as low as 5% LEL
• Fast speed of response
• Poison resistant detectors
• Low power consumption
Cost Effective
• Low cost disposable sensor
• Greater than 5 year typical operating life
Reliable Operation
• Specially matched ‘Sieger’ detectors provide highest stability
• Proven technology from the World leader in combustible gas detection
Flexibility
• Measuring ranges from 0-20% LEL to 0-100% LEL
• Wide range of accessories
Robust Construction
• UL approved explosion proof enclosure
• High grade Aluminum construction.
- Turbine enclosures
- Drying ovens
- Range- 0-20% LEL, 0-100% LEL (Control card dependent)
- Speed of Response
- T60- Less than 6 seconds.
- T90- Less than 10 seconds.
- Minimum Alarm Level- 5% LEL
- Output Signal- mV bridge
- Operating Temperature- -25°C to +150°C (-13°F to +302°F)
- Operating Humidity
- Continuous: 20 to 90% RH
- Intermittent: 10 to 99% RH
- Operating Pressure- 75 to 110kPa (750 to 1100mbar)
- Stability (zero)
- With time: Less than ±5% LEL/year
- With temperature: Less than ±3% LEL
- With humidity: Less than ±3% LEL
- With pressure: Less than ±3% LEL
- Stability (span)
- With time: Less than ±5% LEL/year
- With temperature: Less than ±4% LEL
- With humidity: Less than ±3% LEL
- With pressure: Less than ±3% LEL
- Linearity- Better than ±5% fsd
- Repeatability- Better than ±2% LEL
- Warm-up Time- 30 minutes
- Detector Operating Life- More than 5 years (typical)
- Storage Life- Typically, no degredation has been observed in clean, stable conditions for up to 5 years
- Power Consumption- 0.7W at 200mA
- Enclosure Material- Aluminum
- Mounting Thread- 3⁄4“ NPT
- Weight- 200g (7oz)
- Certification- UL Hazardous location approval Class1, Div1, groups B, C and D Tamb: -25°C to +150°C
Additional information
| Weight | 0.4375 lbs |
|---|
