When bench space limited, the single cylinder autosampler will condition and inject sample from a small single cylinder into a GC.
Often samples come into the lab that condense at room temperature. The sample container and lines will need to be heated to keep samples in gaseous form. This will require the cylinder and all lines including valving need to be heated. Once heated, the sample will need to be pushed through to the sampling valve and injected into the GC for analysis.
The SAS100 allows the user to place a single sample cylinder of up to 1000mL into an oven. After connecting the cylinder and opening the hand valve, the user can select a profile from the SAS100 interface from a touch screen menu on the front panel. The SAS100 will then heat the cylinder to setpoint temperature, push the sample to the sample valve on a GC, through an on-board heated bridge, then start the GC.
Not only does Wasson-ECE manufacture turn-key laboratory and process solutions, but we are also at the forefront of sample introduction solutions in the hydrocarbon processing industry. We manufacture process sample panels, custom sample introduction systems, and small devices to streamline the sample handling process for our customers.
Cold cylinders may have components "stuck" to their walls
vs
Heating your sample cylinder returns these components to the gas phase for accurate analysis
The alternative to our line of auto-samplers is to use heated blankets and wrappings in order to heat the sample above the condensation point. Once the desired temperature is achieved, this can take some time, hand valves will need to be released to get the sample to the sampling system of the analyzer. The end user will then have to manually ready and start the GC. This is all done automatically by our auto-sampler.
Reduced bench space from our other auto-samplers. On-board controller and touchscreen interface allows the SAS100 to function as a complete package for sample prepping.
- • Temperatures of up to 120°C
- • Handles sample cylinders of up to 4.25” [108 mm] OD, 20.5” [520 mm] in length.
- • Sample Pressure: 6 - 300 psig [41.4 - 2068.4 kPa]
- • Includes 5’ [1.5 m] heated bridge, eliminating potential for cold spots.
- • Wetted lines are stainless steel / fused silica lined by default to allow a larger ranges of sample compatibility.
Often samples come into the lab that condense at room temperature. The sample container and lines will need to be heated to keep samples in gaseous form. This will require the cylinder and all lines including valving need to be heated. Once heated, the sample will need to be pushed through to the sampling valve and injected into the GC for analysis.
The SAS100 allows the user to place a single sample cylinder of up to 1000mL into an oven. After connecting the cylinder and opening the hand valve, the user can select a profile from the SAS100 interface from a touch screen menu on the front panel. The SAS100 will then heat the cylinder to setpoint temperature, push the sample to the sample valve on a GC, through an on-board heated bridge, then start the GC.
Not only does Wasson-ECE manufacture turn-key laboratory and process solutions, but we are also at the forefront of sample introduction solutions in the hydrocarbon processing industry. We manufacture process sample panels, custom sample introduction systems, and small devices to streamline the sample handling process for our customers.
Cold cylinders may have components "stuck" to their walls
vs
Heating your sample cylinder returns these components to the gas phase for accurate analysis
The alternative to our line of auto-samplers is to use heated blankets and wrappings in order to heat the sample above the condensation point. Once the desired temperature is achieved, this can take some time, hand valves will need to be released to get the sample to the sampling system of the analyzer. The end user will then have to manually ready and start the GC. This is all done automatically by our auto-sampler.
Reduced bench space from our other auto-samplers. On-board controller and touchscreen interface allows the SAS100 to function as a complete package for sample prepping.
- • Temperatures of up to 120°C
- • Handles sample cylinders of up to 4.25” [108 mm] OD, 20.5” [520 mm] in length.
- • Sample Pressure: 6 - 300 psig [41.4 - 2068.4 kPa]
- • Includes 5’ [1.5 m] heated bridge, eliminating potential for cold spots.
- • Wetted lines are stainless steel / fused silica lined by default to allow a larger ranges of sample compatibility.
Gas samples destined for GC analysis often require heating to ensure heavier sample constituents are returned to the gas phase when captured in a cold metal sample cylinder. Without heating, heavier sample constituents will condense, or just adhere to the inside walls of the sample cylinder and not be vented out of the cylinder during the sample purge process. This results in the heavier constituents being underrepresented in the sample and subsequently underreported in the GC analysis. As a powerful supplement to lab GC, the SAS100 facilitates high-quality chromatography in a compact footprint.
The SAS 100 is a heated sample oven plus a heated sample bridge that ports the sample purging from the sample cylinder to the GC. Note that the GC must have a heated gas sample valve (GSV) and that this GSV must be automated and under the control of the GC attached to the sampler.
The SAS 100 heats the sample cylinder, and its contents, to a user selected temperature, for a user selected duration, then purges the sample to the GC, then triggers the Remote Start on the GC. Additionally, if the GC is equipped with a split inlet that must be brought to ready, the Prep Run on the GC is triggered via cabling prior to sample purge, then the Remote Start input is triggered on the GC sending the GC into its analytical run. Signaling between the SAS and the GC is done by cables, not by software.
The SAS 100 has an intelligent controller that controls temperatures, valve actuations such as purge flow and calibration blend port selection and signaling between the sampler and the GC. The sampler stores up to six “Methods” as well as the Standby Temperature. When the sampler is not in use the oven, and heated bridge to the GC, are maintained at the Standby Temperature.
When needed, the user places the sample cylinder in the SAS oven, makes the one connection to the tubing, and opens the hand valve on the sample cylinder. No sample flows from the sample cylinder as the flow valve is in the closed position. The sample lid is closed.
Next, at the touch screen, the user selects one of six methods that the user has predefined. Each method contains a Start Temperature, a Start Time, High Temperature, a High Temperature Hold Time, and a sample purge time, expressed in seconds. Each method has a number as well as a short user defined text that identifies the method for easy selection.
The user then keys Start, and the sampler heats the sample to the Start Temperature, and holds it there for the duration of the Start Time. At the end of the Start Time the sampler then heats the sample to the High Temperature and holds it there for the duration of the High Temperature Hold Time.
When the High Temperature Hold Time has elapsed, the sampler checks the status of GC Ready via cabling. If the GC shows ready then the sampler’s purge valve is opened letting the sample purge to the GC’s GSV; the purge time, in seconds, is part of the user defined Method. The sample purge stops, and time is given for the sample pressure in the GSV to equilibrate to atmospheric pressure. If the GC then requires a Prep Run signal, such as to shift from Gas Saver to Split Active mode, that signal is supplied and then the sampler waits for the next GC Ready indication. With the GC Ready indication, the GC is started on its analytical run via the remote Start signal. If the GC run time is programmed into the sampler method the sampler will provide an audible beep when the GC has finished its analytical run. Once the sample is purged to the GC, and the GC sent to run, the oven in the sampler will cool to the Start Temperature of the Method.
It should be noted a Method does not require a heating to High Temperature. A Method can be configured to simply hold at the Standby Temperature for some amount of time and then go to the sample purge routine. Also, the Start Time can be configured to zero so that the Method moves to High Temperature immediately upon Method start.
When a sample cylinder is heated, it typically takes about 15 minutes at temperature to come to thermal equilibrium.
A warning sign can be programmed into the controller to caution users when the sampler oven is above a user selected temperature.
- • CE marked
- • 120VAC and 240VAC configurable
| Power Requirements | 120 VAC 50/60Hz, 20 Amp Circuit |
| 230 VAC 50/60Hz, 16 Amp Circuit |
| Wet Surface Material | Stainless Steel |
| Valve Rotor Material | Valcon P |
| Sample Cylinder Volume | 300 - 1000 cc |
| Sample Cylinder Maximum Length* | 20.50 in (521 mm) |
| Sample Cylinder Maximum Diameter | 4.25 in (108 mm) |
| Sample Pressure | 6 - 400 psig |
| Maximum Oven Temperature | 165 ℃ |
GC with a gas sampling valve and data handling system required.
Wasson-ECE Instrumentation
101 Rome Ct., Fort Collins, Colorado USA 80524
Phone: +1 (970) 221-9179
Fax: +1 (970) 221-9364
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