ANSI ESD-STM 3.1-2000 pdf download for Protection of Electrostatic Discharge Susceptible Items- Ionization
4.1.2 Ground fault circuit interrupters (GFCI) and other safety protection should be considered wherever personnel may come into contact with electrical sources.
4.1.3 Electrical hazard reduction practices should be exercised and proper grounding instructions for the equipment must be followed when performing these tests.
4.2 Electrical In the case of high-voltage ionizers with exposed emitters, the corona points or wires should be peak current limited to applicable safety requirements for the installation.
4.3 Ozone The OSHA limit, as defined by 29 CFR 1910.1000，shall not be exceeded. If ozone- sensitive components are in the vicinity of an ionizer, the manufacturer should provide information and/or evaluation suggestions for the situation.
4.4 Radioactive The manufacturer is required to obtain a license from the Nuclear Regulatory Commission (NRC) or the NRC Agreement State in which the equipment is manufactured. The manufacturer and user must meet all requirements of 10 CFR 20 and any other applicable government regulations.
4.5 X-ray The manufacturer and user must meet all requirements of 21 CFR 1020 and any other applicable government regulations. Typically, state and local government agencies will require the device to be registered at its use location. X-ray devices should be installed in such a way that prevents accidental exposure t如personnel. Typically this will include some type of enclosure for the X-ray device and electrical interlocking to turn the X-ray device off when the enclosure is opened.
4.6 Installation Installation should conform to applicable electrical, mechanical, and safety codes, as well as individual facility standards. Some equipment, such as compressed gas guns and nozzles may have to meet other requirements such as 29 CFR 1910.95 for noise exposure and 29 CFR 1910.242 for personnel safety with compressed gas devices. Installation techniques should also be applicable to the particular environment in which the ionizer is to be installed (e.g., cleanrooms).
5 Test Equipment
5.1 The instrument recommended by this standard test method to make performance measurements on air ionization equipment is the charged plate monitor (CPM). Refer to figure 1. The conductive plate shall be 15 cm by 15 cm (6 inches by 6 inches) with a minimum capacitance of 15 picofarads when mounted in the test fixture without electrical hookups. The total capacitance of the test circuit, with plate, shall be 20 picofarads +/-2 picofarads. (Refer to Annex B)
5.2 There shall be no objects, grounded or otherwise, closer than Dimension “A” of the conductive plate except the supporting insulators or plate voltage contacts as shown in figure 2. (Refer to Annex B).
5.3 The isolated conductive plate， when charged to the desired test voltage, shall not discharge more than 10% of the test voltage within 5 minutes, in the absence of ionization.
5.4 The voltage on the plate shall be monitored in such a way that the system conforms to 5.1, 5.2, and 5.3. The response time of the monitoring device shall be sufficient to accurately measure changing plate voltages.