The AEMC MX 57EX is an intrinsically safe digital multimeter designed for use in dangerous or explosive
atmospheres. This meter is considered a passive device without inductive or capacitive issues that are problematic
in dangerous or explosive environments. This meter provides high functionality in a unique case designed for
enhanced safety, reliability, ease-of-maintenance and protection from contaminants.
The meter is built into a rugged housing which provides a separate battery and fuse compartment to isolate the
DMM's electronics from contamination. This meter offers a complete set of measurement ranges and is in compliance
with international safety and quality standards to ensure a professional and reliable measuring tool.
The AEMC MX 57EX measures AC amps, AC volts, DC amps, DC volts, resistance, continuity (with beeper) and has
a diode test function. The large and easy-to-read LCD features a 50,000 count digital display. The display features
comprehensive user interface symbols, such as low battery, Min/Max/Avg and a 34-segment analog bargraph for easy
trend readings. Accuracy is 0.025%. The meter is equipped with a data hold function that freezes the measurement for
later viewing.
The AEMC MX 57EX intrinsically safe digital multimeter ships complete with:
- Test leads (red/black)
- 9 V alkaline battery
- Hard carrying case
- Manual
AEMC MX 57EX Multimeter Specifications (partial):
AC Current |
Measurement range |
500 µA |
5 mA |
50 mA |
500 mA |
Resolution |
10 nA |
100 nA |
1 µA |
10 µA |
Bandwidth |
DC to 5 kHz |
DC to 5 kHz |
DC to 5 kHz |
DC to 5 kHz |
Accuracy |
±0.75% of reading ±30 cts |
±0.6% of reading ±30 cts |
±0.6% of reading ±30 cts |
±0.7% of reading ±30 cts |
Overload protection |
600 V RMS |
600 V RMS |
600 V RMS |
600 V RMS |
AC Voltage |
Measurement range |
500 mV |
5 V |
50 V |
500 V |
1000 V |
Resolution |
10 µV |
100 µV |
1 mV |
10 mV |
100 mV |
Bandwidth |
40 Hz to 1 kHz |
1 kHz to 4 kHz |
4 kHz to 10 kHz |
10 kHz to 30 kHz |
30 kHz to 50 kHz |
Accuracy |
±0.3% of reading ±30 cts |
1% of reading ±30 cts |
2% of reading ±30 cts |
2% of reading ±30 cts |
3% of reading ±30 cts |
Input Impedance |
11 MΩ |
11 MΩ |
10 MΩ |
10 MΩ |
10 MΩ |
Overload protection |
1100 Vpk |
1100 Vpk |
1100 Vpk |
1100 Vpk |
1100 Vpk |
DC Current |
Measurement range |
500 µA |
5 mA |
50 mA |
500 mA |
Resolution |
10 nA |
100 nA |
1 µA |
10 µA |
Accuracy |
±0.2% of reading ±5 cts |
±0.2% of reading ±2 cts |
±0.05% of reading ±2 cts |
±0.2% of reading ±2 cts |
Overload protection |
600 V RMS |
600 V RMS |
600 V RMS |
600 V RMS |
DC Voltage |
Measurement range |
500 mV |
5 V |
50 V |
500 V |
1000 V |
Resolution |
10 µV |
100 µV |
1 mV |
10 mV |
100 mV |
Accuracy |
±0.025% of reading ±2 cts |
±0.025% of reading ±2 cts |
±0.025% of reading ±2 cts |
±0.025% of reading ±2 cts |
±0.025% of reading ±2 cts |
Input Impedance |
10 MΩ/1 GΩ |
11 MΩ |
10 MΩ |
10 MΩ |
10 MΩ |
Overload protection |
1100 V pk |
1100 V pk |
1100 V pk |
1100 V pk |
1100 V pk |
See the data sheet for a complete list of specifications.