The detector performance is specified as follows:
Type | Specification | |
|---|---|---|
VH-D20 | VF-D20 | |
Detection type | Charged aerosol detection | |
Nebulization | FocusJet, concentric | |
Pump flow rate | 0.01 – 2.0 mL/min | 0.2 – 2.0 mL/min |
Evaporation temperature | Adjustable range: ambient +5 to +100°C | Selectable temperatures: +35°C, +50°C, +70°C |
Data collection rate | Adjustable, 2.0 Hz – 200 Hz | Adjustable, 2.0 Hz – 100 Hz |
Filter response time | Digital filter, selectable in numerical sequence (1-2-5 increments) | |
Digital filter constants | Selectable between 0.1, 0.2, 0.5, 1.0, 2.0, 3.6, 5.0 10.0 seconds | |
Dynamic range | Up to 4 orders of magnitude | |
Gas pressure control | Electronically controlled | |
Supply gas | Compressed air or nitrogen | |
Gas supply pressure | 482 - 551 kPa (4.8 - 5.5 bar, 70 - 80 psi) | |
USB | 1 USB port (USB 2.0, "B" type connector) 1 USB hub with 3 ports (USB 2.0, "A" type connectors) | |
System Interlink | 2 system interlink ports (RJ45-8 connectors) | |
Analog output | Installable option; 1 BNC-type analog output connector | |
Full-scale analog output range | 1 pA to 500 pA in 1-2-5 sequence | |
Analog signal output | 0 – 1 V DC | |
Control | Chromeleon 7 The detector can be operated also with other data systems. For details, contact the Thermo Fisher Scientific sales organization. Keypad with 2 buttons for performing certain functions directly from the detector | |
Materials in the flow path | Stainless steel (type 316), SimRiz™ NOTICE For information about the chemical resistance of materials refer to the technical literature. | |
Solvent and additive information | ||
Safety features |
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Good Laboratory Practice (GLP) features | Predictive Performance functions for scheduling maintenance procedures based on the actual operating and usage conditions of the detector. This includes monitoring of the replacement interval for the gas filter assembly and the service interval. All system parameters are logged in the Chromeleon Audit Trail. | |