Download - Da Vinci DVLS3 Simply, Smart Hydrogen Sensor for Gas Chromatographs

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DVLS³ (S)imply, (S)mart, multi-(S)ensor “Focus on Hydrogen”

Exclusive North American Distributor

2 2 29 November 2012

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

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



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



DVLS³ (S)imply, (S)mart, multi-(S)ensor Hydrogen Sensor


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


DVLS³ (S)imply, (S)mart, multi-(S)ensor Carrier Gas Switch


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


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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DVLS³ (S)imply, (S)mart, multi-(S)ensor Alarms

Acoustic

Optical (blinking display)

SMS Message

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DVLS³ (S)imply, (S)mart, multi-(S)ensor Catalystic Pellistor Sensor & Wheatstone Bridge

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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.