All performance specifications stated, including but not limited to, pump-down rates and vacuum levels make the following assumptions:
- The Vacuum Chamber is empty.
- The Vacuum Chamber and other system components are clean and dry.
- The System is being operated at Sea Level
- The ambient temperature is 18°C +/- 2°C
- All system components, including those not supplied by Abbess, are appropriate for the system and are functioning properly.
- The specifications are not impacted by the properties of your product.
If you require performance specifications for conditions other than those listed above, it is vital that you make this known to Abbess Instruments in writing. Generally Abbess Instruments recommends choosing chamber and pumping system qualities capable of achieving a theoretical vacuum at least an order of magnitude better than the desired operational vacuum.
It is to be noted that a specification described as '10-5 Torr' is a range, and means the clean, empty, dry chamber system is capable of reaching some undetermined value between 1.0x10-5 and 9.9x10-5 Torr: The (clean, empty, dry) chamber is deemed compliant whether its As-Built base vacuum is 1.0x10-5 Torr or 9.9x10-5 Torr. It does not mean that the chamber is guaranteed to reach every level within that range.
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Heat Sealing in Vacuum
This system will produce a very high quality heatseal in a high vacuum.
With this design the thermal control loop is closed:
ACTUAL temperature = SET temperature.
Even minute thermal loads on the heatsealing band are detected and corrected quickly and precisely. Abbess uses Ropex RS440 temperature controllers, to control the temperature of heating elements (heatsealing bands, beaded bands, cutting wires, heatsealing blades, solder elements etc.), as required in a variety of heatsealing processes.
This Vacuum Chamber design is a rugged industrial bench top unit for use in production or testing.
Some of our customers find this to be a practical size for use in vacuum work. With optional thermal shelves, these thermal vacuum chambers can be very effective in product handling, drying and sealing without exposure to air.
This chamber is also used in many other industries where vacuum work is required.
Standard Chambers are constructed of welded 304 Stainless alloy with interior standard dimensions of 14, 18, 24, and 36 inch cubes. Custom dimensions are available.
The door seal is a (customer replaceable) 3/16" thick O-ring seal to withstand repeated closings. Two draw latches close the front hinged door.
All chambers are vacuum tested to 29.92 inch(Hg) or better (10-4 torr optional) and should maintain this for its life dependent on seal condition and customer use.
Material: |
Welded 304 Stainless Steel or Welded Aluminum |
Interior Dimensions: |
Interior standard dimensions of 14, 18, 24, and 36 inch cubes - Custom dimensions are available. |
| Vacuum: | • To 29.92 inch(Hg) or better (10-4 TO 10-6 torr optional) under dynamic vacuum |
Included Features: |
This RESISTRON temperature controller is an integral part of the "series 400", the outstanding feature of which is its microprocessor technology. All RESISTRON temperature controllers are used to control the temperature of heating elements (heatsealing bands, beaded bands, cutting wires, heatsealing blades, solder elements etc.), as required in a variety of heatsealing processes. Principle of operation The resistance of the heatsealing band, which is temperature-sensitive, is monitored 50x per second (60x at 60Hz) by measuring the current and voltage. The temperature calculated with the help of these measurements is displayed and compared with the set point. The primary voltage of the impulse transformer is adjusted by phase-angle control if the measured values deviate from the set point. The resulting change in the current through the heatsealing band leads to a change in the band temperature and thus also its resistance. This change is measured and evaluated by the RESISTRON temperature controller. The control loop is closed: ACTUAL temperature = SET temperature. Even minute thermal loads on the heatsealing band are detected and can be corrected quickly and precisely. The thermoelectric control loop which is formed has a highly dynamic response because purely electrical variables are measured at a high sampling rate. A high secondary current can be controlled with only minimal power loss because power is controlled on the primary • Increased machine capacity PLEASE NOTE! • Very simple operation thanks to AUTOCAL, the automatic zero calibration function. A time control (timer) function integrated in the controller enables the complete heatsealing process to be controlled on simple machines, such as table heatsealing tools. A configurable relay output can be used to drive motors, energize magnets etc. The process data is represented on an LC display with 4 lines and 20 characters. Devices with a VF display are available as an option. Various display languages can be selected. In addition to the digital and bar indications on the display, the ACTUAL temperature of the heatsealing band is supplied to an optional analog 0…10VDC output. The real heatsealing band temperature can thus be displayed on an external temperature meter (e.g. ATR-x). The RESISTRON temperature controller RES-440 also features an integrated fault diagnosis function, which tests both the external system (heatsealing band, wiring etc.) and the internal electronics and outputs a selective error message in case of a fault. To increase operational safety and interference immunity, all 24VDC logic signals are electrically isolated from the controller and the heating circuit. The menu in the temperature controller itself can be used to adapt to different heatsealing band alloys (Alloy-20, NOREX etc.) and set the required temperature range (0…300°C, 0…500°C etc.). The RESISTRON temperature controller RES-440 is designed for installation in a front panel cutout. Abbess Instruments builds this controller, switches, indicators and wiring into a NEMA 13 sealed steel housing for industrial use.
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| Optional Features/Items: | • Electronic degassing cycle timer with manual override
Get yours on a stand with pump and Digital Vacuum Cycle Controller-setup, all connected, and tested -ready to GO!
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