The Chroma model 16502 insulation meter offers a wide range of measurements: 0.001 mΩ~1.9999 MΩ. Continuous, pulsed and dry circuit test current modes of operation allow the Chroma model 16502 to be profitably used to measure the DC resistance of a variety of inductive components (coil windings, valves and transformers, etc.), cables, metal contacts (connectors, relay switches, etc.) and conductive materials.
With the help of the A165014 temperature compensation board and the A165015 PT100 temperature probe, resistance values measured at room temperature can be corrected with the temperature correction function by applying a temperature coefficient so that the display shows resistance values corresponding to any other temperature. The temperature increment (Δt) is obtained and displayed by converting the resistance measurements and room temperature with the appropriate temperature conversion function. This function is especially useful for testing motor windings or coils, where the maximum temperature rise must be determined when current is applied.
The use of pulsed current ± affects power valves, relay switches/contacts, wires coiled in multiple braids, metal foils or conductive materials, temperature sensitive materials (fuses, thermistor sensors), etc. The dry circuit mode affects switches/relay contacts, thermosensitive materials (fuses, thermistor sensors), etc. DC+ operation affects devices under high-inductance test, such as when measuring transformer primaries (multi-turn) with a measurement delay function so that the test current does not produce that effect through the devices under high-inductance test during the test.
Standard RS-232 interface, optional GPIB and Handler interfaces, stable high-speed measurement functions enable Chroma 16502 devices to be used both for component evaluation on the production line and for insulation measurement in test bench applications.
