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Multi Measuring Instruments

M-730 AC/DC Clamp Milliammeter (CE)

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SKU:
M-730
Weight:
280.00 Grams

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Description

M-730 AC/DC Clamp Milliammeter (CE)

The M-730 AC/DC Clamp Milliammeter is a leakage current measuring instrument designed for low-current AC and DC measurements. It features a separate clamp-type current transformer with a 30mm jaw opening, providing DC measuring ranges of 100mA and 1000mA and AC ranges of 100mA, 1000mA, and 10A.

The M-730 supports measurement of 4–20mA DC control circuits and offers a minimum resolution of 0.01mA for low-current measurements. It also provides a DC analog output of 100mV full scale for each measuring range, allowing connection to a compatible recording device.

The instrument features DC zero adjustment, data hold, and automatic power-off. It operates within a circuit voltage limit of AC/DC 600V and is specified to IEC 61010-1 and IEC 61010-2-032, with CAT II 600V and CAT III 300V ratings.

What is parasitic current ? Let's try to measure by M-730 !!

Method of operation

Accuracy Specifications

Conditions: 23°C ± 5°C, less than 85% RH.

Function Range Measurement Range Resolution Accuracy Maximum Input
DC Current 100 mA 0.1 to ±99.99 mA 0.01 mA ±1% rdg ± 10 dgt DC 1.5 A
1000 mA 1 to ±300 mA 0.1 mA ±1% rdg ± 10 dgt
±300.1 to ±700 mA 0.1 mA ±2% rdg ± 10 dgt
±700.1 to ±999.9 mA 0.1 mA ±3% rdg ± 10 dgt
AC Current (50/60 Hz) 100 mA 0 to 99.99 mA 0.01 mA ±2% rdg ± 10 dgt AC 20 A
1000 mA 0 to 999.9 mA 0.1 mA ±2% rdg ± 10 dgt
10 A 0 to 9.999 A 0.001 A ±1% rdg ± 10 dgt

Influence of Terrestrial Magnetism: Less than ±2.0 mA.

Influence of Magnetization: Less than ±2.0 mA by DC 1.5 A on/off.

Influence of CT Opening and Closing: Less than ±1.0 mA.

Key Features - M-730 AC/DC Clamp Milliammeter (CE)

  • AC/DC Leakage Current Measurement: DC ranges of 100mA and 1000mA; AC ranges of 100mA, 1000mA, and 10A.
  • High-Resolution DC Measurement: Resolution down to 0.01mA for low-current measurements.
  • 30mm Clamp Jaw Opening: Separate clamp-type current transformer for measurements without direct electrical connection.
  • 4–20mA DC Circuit Measurement: Suitable for measuring current in 4–20mA DC controlled circuits.
  • Analog Signal Output: DC 100mV full-scale output for each measuring range, with an optional recorder cable.

Documents

Catalog: e_ca_m730.pdf

Instruction Manual: e-ma-m730.pdf

Test Results(Data Sheet): M-730 datasheet.pdf

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Additional Information

Measuring function:
AC/DC leakage current
AC Conversion:
Average sensing rms reading
Accuracy:
See accuracy specifications in description tab
Display:
Max. 2000 count on LCD with annunciators
Current Consumption:
Approx. 9mA (Approx. 200 hours continuous)
Option:
Cable for recorder
Jaw opening capability:
30mmφ
Over range indication:
"OL" mark on LCD
Data hold indication:
"DH" mark on LCD
Sampling rate:
1 time/sec. for DC and 6 times/sec. for AC
Withstanding Voltage:
AC 3700V/1 minute between CT and outer case
Operating Temperature:
0～50℃, < 85%RH (without condensation)
Storage Temperature:
-10～60℃, < 70%RH (without condensation)
Low battery indication:
"Battery" mark on LCD
Auto power off:
Approx. 10 minutes after power on and can absolve this function by switch
Power supply:
LR6, AM-3 or AA size battery×4
Size:
Main unit:78(W)×155(H)×32(D)mm, Approx. 280g || 33(W)×170(H)×24(D)mm CT (CTP-30DC):1.2m lead, Approx. 165g
Accessories:
Carrying case, Batteries, Instruction manual
Measuring range:
DC 100mA/1000mA, AC 100mA/1000mA/10A (45Hz-65Hz)
Zero adjustment:
For DC current range by "0 ADJ" switch
Signal Output:
DC 100mV full scale to each range (Output impedance: less than 10kΩ)
A/D Conversion:
Dual slope integration method
Measuring Methode:
Clamp type CT
Limitation of circuit voltage:
Less than AC/DC 600V
Safety standard:
IEC61010-1, IEC61010-2-032 CATâ…¡ 600V or CATâ…¢ 300V
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