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Technical Information and Requirements
Testing Facilities
CSA International's hazardous locations laboratories provides the expertise, test facilities, and services needed to evaluate your products in accordance with applicable CSA, UL, FM, CENELEC and IEC standards.
The explosion test chamber is designed to contain test gas mixtures for evaluating flame propagation and for determining maximum explosion pressure.
The overpressure test system includes hydrostatic test apparatus capable of delivering 18 gallons (68 litres) per minute at a maximum pressure of 3,000 psig (20,684 MPa). In addition, a hydraulic system is available for testing leak-free equipment to a maximum pressure of 40,000 psig (275,790 MPa). These systems are used to test an enclosure's ability to withstand pressure. This pressure withstand test is based on a multiplier of the maximum explosion pressure obtained in the explosion pressure test.
The IEC spark ignition test apparatus is used to evaluate the inductive, capacitive, and resistive energy levels of circuits for intrinsic safety or non-incendive circuit ratings with representative ignition-sensitive test gas mixtures. Our refinements help to ensure optimal sensitivity and repeatability. Specially modified units are available for low-voltage, high-current applications.
The component incendivity test system uses a see-through test chamber for evaluating non-incendive devices, such as switches, relays, and connectors, with electrical overloads applied in a simulated explosive atmosphere. The test chamber can be used for spark ignition testing of electrostatic paint spray guns.
The thermal ignition test chamber exposes small components, such as transistors and resistors that reach temperatures of more than 160oC, to a uniform ether/air test mixture. If the test mixture does not ignite with the component at its maximum temperature, the component qualifies for the corresponding temperature "T" Code or Class marked on the equipment. The apparatus is also used to check the ignition capability of lamp filaments.
Combustible gas detectors are used to enhance the safety of operations in hazardous locations. Our performance test facility is equipped to handle portable, mobile, and stationary instruments, including system applications. Specialized test equipment consists of:
- bounce apparatus
- two-stage regulated gas mixing supply
- primary standard reference gas mixtures
- gas environment exposure chambers
- small-volume sensor chamber for extreme temperatures
- gas flooding apparatus
- drop-out pulse generator for power interrupt simulation.
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