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| HOME / FREQUENTLY ASKED QUESTIONS |
Frequently Asked Questions |
1)What is an Ionizing Curtain Transvector 2)How much compressed air is consumed by a curtain transvector? 3)Why can’t I just use Tinsel, or Static String? | - 1)What is an Ionizing Curtain Transvector
- SIMCO Industrial Static Control Ionizing Curtain Transvectors (air knives) combine the proven performance of SIMCO static neutralizing bars with the new and improved patented Curtain Transvectors. The result is a highly efficient "air knife" or "curtain" of ionized air for superior cleaning and neutralization capabilities.
Operating alone, a SIMCO static bar efficiently neutralizes static charges on surfaces close to the bar. When a static bar is combined with a curtain transvector, the static bar's ability to clean and neutralize surfaces in a specific area a distance away from the bar is dramatically improved. The Curtain Transvector also provides the benefit of greatly improved cleaning capabilities while substantially reducing air consumption figures.
SIMCO Ionizing Curtain Transvectors can be ordered with or without standard SIMCO static bars or SIMCO intrinsically safe static bars which are UL listed and FM approved for Class I, Division I, Group D hazardous locations.
- 2)How much compressed air is consumed by a curtain transvector?
- Pressure(PSIG) Air Consumption per inch of Transvector
30 1.90
40 2.40
50 2.90
60 3.35
70 3.83
80 4.33
90 4.75
100 5.30
To determine air consumption (SCFM) for a curtain transvector, locate the appropriate pressure and corresponding air consumption per inch of transvector on the chart. Multiply the air consumption per inch x the effective length of the transvector. - 3)Why can’t I just use Tinsel, or Static String?
- The common problems with the use of Tinsel or String devices are:
1) Proper grounding and distance to the charged surface is critical and varies depending upon the application. An operator usually replaces the tinsel/string and proper installations cannot be relied on. This usually results in poor performance due to mounting variations. Often the charges actually increase with improper mounting.
2) Most passive device users install the tinsel/string so it contacts the charged material. Friction from moving materials wears or breaks off the copper strands, or string fibers, resulting in contamination of the product.
In most industrial applications passive ionization devices, like Tinsel and Static String, are not adequate because they are not capable of eliminating the entire electrostatic field like an active (electrical) ionizer will.
When these passive devices are properly mounted, they represent a ground reference with many individual sharp edges from which ions can be created when exposed to an electrostatic field. The ionization begins when the field intensity exceeds the “Threshold Voltage”, and stops when the field intensity is reduced to that threshold level. The critical issue is that the electrostatic charge that is present on the material surface at the threshold voltage level often measures in the thousands of volts range, and will continue to cause problems in most industrial applications.
Also, caution should be taken if you are considering these devices for use in hazardous locations, because under certain conditions they may cause an arc capable of igniting vapors in Class I, Division 1, Group D environments, and have been documented as the cause of several factory fires.
The full line of Simco Static Eliminating Bars work independent of the electrostatic field, and continue to neutralize the electrostatic charge for all practical purposes to zero. Simco also offers UL approved static eliminators for hazardous locations. It’s like any other maintenance job in the factory; you need the right tool for the job! Contact our customer service department, on this site, for more information.
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