Envantage is the exclusive North American distributor of the Da Vinci DVLS3 hydrogen sensor. Install this sensor in your GC to reduce the risk of explosion due to hydrogen leaks that may develop around your instrument hot zones.

1. DVLS³ (S)imply, (S)mart, multi-(S)ensor
“Focus on Hydrogen”
Exclusive North American Distributor
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2. DVLS³ (S)imply, (S)mart, multi-(S)ensor
4 Reasons for using H2 as a Carrier Gas
1. Fast Analysis:
 Fast diffusion rate; 4 times faster than
N2
 Half as viscous as helium; higher linear
gas velocity and shorter retention
times
2. High Efficiency:
 Flattest Van Deemter curve
29 November
2 2012

3. DVLS³ (S)imply, (S)mart, multi-(S)ensor
4 Reasons for using H2 as a Carrier Gas
3. Prolonged Column Life:
Some applications have a lower elution temperature,
therefore the column life is longer
4. High Efficiency:
 3x’s less expensive than its helium equivalent
 Bottle or generator
29 November
3 2012

4. DVLS³ (S)imply, (S)mart, multi-(S)ensor
Reluctant to use H2 as a Carrier Gas?
 Hydrogen is an Explosive Gas:
 Undetected gas leaks can lead to
an explosion in the GC Oven
 LEL 4% hydrogen in Air
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4 2012

5. DVLS³ (S)imply, (S)mart, multi-(S)ensor
Hydrogen Sensor
29 November
5 2012

6. DVLS³ (S)imply, (S)mart, multi-(S)ensor
Sensor Installed in the GC Oven
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6 2012

7. DVLS³ (S)imply, (S)mart, multi-(S)ensor
Carrier Gas Switch
29 November
7 2012

8. DVLS³ (S)imply, (S)mart, multi-(S)ensor
Sequence Stop after Analysis
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8 2012

9. DVLS³ (S)imply, (S)mart, multi-(S)ensor
Calibration
 Zero Point Calibrated Using Air
 Alarm level Calibrated using Calibration Mixture
 Yearly or after maintenance or repair
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9 2012

10. DVLS³ (S)imply, (S)mart, multi-(S)ensor
Alarms
 Acoustic
 Optical (blinking display)
 SMS Message
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10 2012

11. DVLS³ (S)imply, (S)mart, multi-(S)ensor
Catalystic Pellistor Sensor & Wheatstone Bridge
29 November
11 2012

12. DVLS³ (S)imply, (S)mart, multi-(S)ensor
Summary & Benefits
 Catalytic Pellistor gas specific sensor, linear range of 0-2% H2 (0-50% LEL)
 Unaffected by humidity, stable output for long periods, more resistant to shocks
and vibrations.
 Expected lifetime: over five years
 Long term stability; drift sensitivity: less than 2mV a month
 User defined alarm: optical, acoustic and/or SMS up to 50% LEL
 Instrument readings: provide real time sensor readings with alarm levels,
channel states
 User menu for configuration (password protected)
 Valve : High pressure 3 way solenoid valve
 Oven operating temperature: up to 450ο C
 Multiple Sensors: Max 4 sensors individually controlled
 Sensor options: temperature, barometer, level, oxygen or hydrogen as
a leak detector.
29 November
12 2012