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METRAHIT PM PRIME BT (METRAHIT ULTRA BT) METRAHIT PM PRIME (METRAHIT ULTRA) METRAHIT PM XTRA (METRAHIT EXTRA) METRAHIT PM TECH (METRAHIT TECH)
Item number M248B M248A M250A M253A
Product details page Details Details Details Details
Chapter01 Display Display Display Display
Indication Digital Digital Analogue/digital Analogue/digital
Indication digits 310000 310000 60000 60000
Analogue bar graph display x x
Analogue bar graph display analogue/logarithmical
Multiple display x x
Measuring range selection Manual/automatic Manual/automatic Manual/automatic Manual/automatic
Chapter02 Basic data Basic data Basic data Basic data
Type of measurement TRMS TRMS TRMS TRMS
True RMS measurement x x x x
Basic accuracy 0.02% 0.02% 0.05% 0.05%
Measuring circuit category CAT IV CAT IV CAT IV CAT IV
Max. voltage measuring circuit category 300V 300V 600V 600V
Relative value measurement x x x x
Min. value storage x x x x
Maximum value storage x x x x
Peak value memory
Data hold x x x x
Chapter03 Special functions Special functions Special functions Special functions
Explosion-tested version
Power and energy measurement
Harmonics analysis/power quality
Rotational speed measuring
Duty cycle measurements x x x
Pulse freqency measurement MHz @ 5V TTL x x x
Inductance measurement
Automatic circuit breaker
Chapter04 Voltage measurement Voltage measurement Voltage measurement Voltage measurement
Voltage measurement types DC
AC
AC Fil
AC+DC
AC+DC Fil 		DC
AC
AC Fil
AC+DC
AC+DC Fil 		DC
AC
AC Fil
AC+DC 		DC
AC
AC Fil
AC+DC
With decibel measurement (dB) x x x x
Voltage measuring range DC 0,000001V - 600V 0,000001V - 600V 0,00001V - 1000V 0,00001V - 1000V
Voltage measuring ranges DC 300 mV
3 V
30 V
300 V
600 V 		300 mV
3 V
30 V
300 V
600 V 		600 mV
6 V
60 V
600 V
1000 V 		600 mV
6 V
60 V
600 V
1000 V
Max. voltage measuring range, DC 600V 600V 1000V 1000V
Lowest resolution, DC voltage 0.001 mV 0.001 mV 0.01 mV 0.01 mV
Internal resistance volt DC 10 10 9 9
Voltage measuring range AC 1V - 600V 1V - 600V 0,00001V - 1000V 0,00001V - 1000V
Voltage measuring ranges AC 300 mV
3 V
30 V
300 V
600 V 		300 mV
3 V
30 V
300 V
600 V 		600 mV
6 V
60 V
600 V
1000 V 		600 mV
6 V
60 V
600 V
1000 V
Max. voltage measuring range, AC 600V 600V 1000V 1000V
Lowest resolution, AC voltage 0.01 mV 0.01 mV 0.01 mV 0.01 mV
Frequency range volt AC 15Hz - 100000Hz 15Hz - 100000Hz 15Hz - 100000Hz 15Hz - 20000Hz
Internal resistance volt AC 5 5 9
1 		9
1
Low-pass filter AC voltage (fc) 1kHz 1kHz 1kHz 1kHz
Voltage measuring range AC+DC 1V - 600V 1V - 600V 0,00001V - 1000V 0,00001V - 1000V
Voltage measuring ranges AC+DC 300 mV
3 V
30 V
300 V
600 V 		300 mV
3 V
30 V
300 V
600 V 		600 mV
6 V
60 V
600 V
1000 V 		600 mV
6 V
60 V
600 V
1000 V
Max. voltage measuring range, AC+DC 600V 600V 1000V 1000V
Lowest resolution volt AC+DC 0.01mV 0.01mV 0.01mV 0.01mV
Internal resistance volt AC+DC 5 5 9 9
Frequency range volt AC+DC 100kHz 100kHz 100kHz 20kHz
Level measurement voltage types AC
AC+DC 		AC
AC+DC 		AC AC
Measuring range voltage level for U ref = 0.775 V -42dB - 57dB -42dB - 57dB -48dB - 63dB -48dB - 63dB
Lowest resolution voltage level 0.01dB 0.01dB 0.01dB 0.01dB
Chapter05 Current measurement Current measurement Current measurement Current measurement
Current measurement types AC
AC+DC
DC 		AC
AC+DC
DC 		DC
AC
AC+DC 		DC
AC
AC+DC
Current measurement range DC 0,000000001A - 10A 0,000000001A - 10A 0,00000001A - 10A 0,000001A - 10A
Current measuring ranges DC 0.3 mA
3 mA
30 mA
300 mA
3:00 AM
10:00 AM 		0.3 mA
3 mA
30 mA
300 mA
3:00 AM
10:00 AM 		600 �A
6 mA
60 mA
600 mA
6:00 AM
10:00 AM 		60 mA
600 mA
6:00 AM
10:00 AM
Max. current measuring range, DC 10A 10A 10A 10A
Lowest resolution, DC current 0.001 µA 0.001 µA 0.01 µA 1 µA
Current measurement range AC 0,00000001A - 10A 0,00000001A - 10A 0,00000001A - 10A 0,000001A - 10A
Current measuring ranges AC 0.3 mA
3 mA
30 mA
300 mA
3:00 AM
10:00 AM 		0.3 mA
3 mA
30 mA
300 mA
3:00 AM
10:00 AM 		600 �A
6 mA
60 mA
600 mA
6:00 AM
10:00 AM 		60 mA
600 mA
6:00 AM
10:00 AM
Max. current measuring range, AC 10A 10A 10A 10A
Lowest resolution, AC current 0.01 µA 0.01 µA 0.01 µA 1 µA
Frequency range alternating current 15Hz - 10000Hz 15Hz - 10000Hz 15Hz - 10000Hz 15Hz - 10000Hz
Current measurement range AC+DC 0,00000001A - 10A 0,00000001A - 10A 0,00000001A - 10A 0,000001A - 10A
Current measuring ranges AC+DC 0.3 mA
3 mA
30 mA
300 mA
3:00 AM
10:00 AM 		0.3 mA
3 mA
30 mA
300 mA
3:00 AM
10:00 AM 		600 �A
6 mA
60 mA
600 mA
6 A
10:00 AM 		60 mA
600 mA
6 A
10:00 AM
Max. current measuring range AC + DC 10A 10A 10A 10A
Lowest resolution amps AC+DC 0,00001mA 0,00001mA 0,00001mA 0.001mA
Frequency range amps AC+DC 10kHz 10kHz 10kHz 10kHz
Current sensor with clipping x x x x
Current measuring range with current sensors 0,00001A - 3000A 0,00001A - 3000A 0,00001A - 6000A 0,00001A - 6000A
Current transformer with clipping x x x x
Current measuring range with current transformers 0,000001A - 3000A 0,000001A - 3000A 0,000001A - 6000A 0,000001A - 6000A
Clip factors 01:01
01:10
0,111111111
0,736111111 		01:01
01:10
0,111111111
0,736111111 		01:01
01:10
0,111111111
0,736111111 		01:01
01:10
0,111111111
0,736111111
Chapter06 Resistance measurement Resistance measurement Resistance measurement Resistance measurement
Milliohm measurement with 4 wire technique (Kelvin connection)
Resistance test/diode test x x x x
Continuity test x x x x
Conductivity measurement
Resistance measurement range 0.001Ohm - 30000000Ohm 0.001Ohm - 30000000Ohm 0.01Ohm - 60000000Ohm 0.01Ohm - 60000000Ohm
Resistance measurement ranges 300
3 k
30 k
300 k
3 M
30 m 		300
3 k
30 k
300 k
3 M
30 m 		600
6 k
60 k
600 k
6 M
60 m 		600
6 k
60 k
600 k
6 M
60 m
Max. resistance measuring range 30MOhm 30MOhm 60MOhm 60MOhm
Lowest resolution, resistance 0.001 Ohm 0.001 Ohm 0.01 Ohm 0.01 Ohm
Lowest resolution, milliohm measurement 1mOhm 1mOhm 10mOhm 10mOhm
Nominal test voltage 10 V
Nominal test voltage 50 V
Nominal test voltage 100 V
Nominal test voltage 250 V
Nominal test voltage 500 V
Nominal test voltage 1000 V
Chapter08 Capacitance measurement Capacitance measurement Capacitance measurement Capacitance measurement
Capacitance measurement x x x x
Capacitance measuring range 0,000001µF - 300µF 0,000001µF - 3000µF 0,00001µF - 600µF 0,00001µF - 600µF
Capacitance measurement ranges 3 nF
30 nF
300 nF
3 �F
30 �F
300 �F
3 mF 		3 nF
30 nF
300 nF
3 �F
30 �F
300 �F
3 mF 		60 nF
600 nF
6 �F
60 �F
600 �F 		60 nF
600 nF
6 �F
60 �F
600 �F
Max. capacitance measuring range 3000µF 3000µF 600µF 600µF
Lowest resolution, capacitance Other Other 0.00001 µF 0.00001 µF
Cable length measurement
Cable symmetry testing for two wire connections a-b-E
Chapter09 Frequency measurement Frequency measurement Frequency measurement Frequency measurement
Frequency measurement x x x x
Measuring range for frequency 0,000001kHz - 1000kHz 0,000001kHz - 1000kHz 0,00001kHz - 1000kHz 0,00001kHz - 300kHz
Max. frequency measuring range 1000kHz 1000kHz 1000kHz 300kHz
Lowest resolution, frequency 0.001 Hz 0.001 Hz 0.01 Hz 0.01 Hz
Chapter10 Temperature measurement Temperature measurement Temperature measurement Temperature measurement
Temperature measurement x x x x
Temperature measurement TC x x x x
Temperature measuring range TC -270°C - 1372°C -270°C - 1372°C -250°C - 1372°C -250°C - 1372°C
Temperature measurement RTD x x x x
Temperature measuring range RTD -200°C - 850°C -200°C - 850°C -200°C - 850°C -200°C - 850°C
Max. temperature measuring range 1372°C 1372°C 1372°C 1372°C
Lowest resolution, temperature 0.1 °C 0.1 °C 0.1 °C 0.1 °C
Chapter11 Interface and memory Interface and memory Interface and memory Interface and memory
Interface x x x x
Bluetooth interface x
IR interface x x x x
Measured value memory x x x
Memory capacity for measured values 300000 300000 61000
Chapter12 Miscellaneous Miscellaneous Miscellaneous Miscellaneous
Power supply unit socket x x x
Device protection category IP 52 IP 52 IP 52 IP 52
Crest factor measurement
Interturn short-circuit high-voltage test

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