The Digital Measuring Instrument DMI 551 is a microprocessor controlled device for measuring AC, DC and impulse voltages. The instrument can also be used for firing a generator or a chopping sphere gap and to trigger an oscilloscope or any other measuring device. The triggers can be set for delays in time and in phase. The DMI 551 is in accordance to the international standard IEC 60060-2.

The three separate measuring channels, as well as the trigger function are usable individually or in combination and can be activated by a software code.

The DMI 551 has implemented a flash detector which stores and shows the last voltage measurement and its polarity before a breakdown or flashover occurs.

The instrument is specially designed for use in high voltage laboratories where a high degree of accuracy is necessary. Typical main applications of the DMI 551 include measurements of a voltage divider output or for automated product testing where the DMI 551 is integrated into a complete control and measuring platform.

The instrument is built into a 19’’ standard housing with 3 height units. For ease of use the DMI 551 is equipped with a 5.2’’ liquid crystal display and a numerical keypad.

For remote control or data transfer the DMI 551 provides an RS 232 or a IEEE 488 interface. AC and DC measurements can be printed directly via a separate plotter port on an external X-Y graph recorder.

The AC out interface can be connected to an oscilloscope.

HAEFELY is able to calibrate the DMI 551 according to DKD (German Calibration Services) which is traceable to highest national and international standards.

Advantages

Applications