SV-2000 OPERATING MANUAL
Introduction
The Solvent Vapor Generator is used to facilitate the evaporation of solvents in order to
produce an airborne vapor stream. It can be used to produce vapors from aqueous
solutions of polar species (e.g. formaldehyde). Caution must be exercised when
performing these functions.
Vaporization of Pure Solvents
Check to make sure that you are operating below the explosive temperature and
concentration of the solvent being vaporized. Also make sure that the solvent does not
react chemically with either brass or copper. Once these two determinations are made,
set up the vaporizer as follows:
1.
Set vaporizer on the bench and connect a flowing air supply (e.g. MNR HCS-401)
to the air INLET connection.
2.
Establish the desired flow rate and relative humidity from the flowing air supply.
3.
Turn on the vaporizer and set the heater setting to the desired level. DO NOT
TURN ON THE VAPORIZER UNLESS AIR IS FLOWING THROUGH THE
SYSTEM. The heater setting should be just enough to completely evaporate the
liquid. Too much heat could decompose the liquid.
4.
Fill an appropriate sized syringe with the solvent of interest. Connect the syringe
to a length of PTFE tubing that terminates in a needle.
5.
Pierce the septum on the INJECTION PORT with the needle and push until the
needle stops (about 2 ¼ inches).
6.
Place the solvent-filled syringe into a syringe pump and adjust the heater setting
until a smooth outflow of vapor is established. If the output from the vaporizer is
irregular, the flow from the vaporizer may be passed through a mixing chamber
prior to use to obtain a more uniform mixture.
Rev June 2011