Milliohm Meter – 16502
The Chroma 16502 Milliohm Meter is Chroma’s newest digital Milliohm Meter. With a basic accuracy of 0.05% the instrument offers a 0.001mOhm – 1,9999MOhm wide measurement range.
It provides measurement range with 4 1/2 digits resolution. The fast measurement time is 65 ms. It suits component evaluation on production line.
The Chroma 16502 Milliohm Meter provides three kinds of mode for the different material applications. Pulsed test current output mode is used to reduce thermal EMFs affection on milliohm measurement. DC test current output mode is used to fasten measurement speed for inductive DUT. Dry-circuit test current output mode is used to measure such contact resistances where the maximum open-circuit voltage must be limited to 20mV. DC, Pulsed, and Dry-circuit test current driving modes, enable the Chroma 16502 can be properly used in DC resistance measurement for various inductive components (coil, choke, and transformer winding etc.), cable, metallic contact (connector, relay switch etc.) and conduction materials.
The Chroma 16502 provides temperature correction function. Temperature correction (TC function) without regarding to material or temperature. Users usually get different resistance value with different ambient temperature.
Conventional units have the temperature correction using a copper wire at 20 degrees C. only, but 16502 provides the converted values regardless of material or temperature.
The Chroma 16502 offers temperature conversion function. It is helpful temperature conversion function for motor / coil evaluation. Users usually should not take the motor / coil temperature through touch the surface directly when the motor just stops. The temperature conversion function shows the temperature (delta-t) or increase in temperature of motor / coil, deriving the values from the measured resistance of the motor / coil and the ambient temperature. It is helpful for user to do the temperature evaluation of motor/ coil.
The Chroma 16502 provide the menu list on front panel of LCD Display, and the programming assure that low resistance measurements can be made quick and easy. Provides a programmable Hi/Lo comparator function in absolute value or %, as well as 8 sorting bins for categorization of components.
For measurement integrity, contacting to the test device is made via a 4-terminal Kelvin connection that incorporates an automatic zeroing function to compensate for lead errors.
Standard RS232 interface, optional GPIB & Handler interface, high speed and stable measurement capabilities enable Chroma 16502 can be used for both component evaluation on the production line and milliohm measurement for bench-top applications.
