LE-3 Print _CMN_EMAIL_ALT

Moving-iron meters LE-3

 Type LE-3 instrument is designed to be used for measurements in industrial and scientific laboratories, test stations and wherever high accuracy of measurement, especially with distorted voltage or current waves, is required. LE-3 measures rms value.

General information:

  • Type LE-3 instruments are offer as direct currents and d.c. voltages for the measurement of  rms value of alternating and mixed ac-dc currents and voltages of frequencies from 15 to 500 Hz.
  • LE-3 measures rms value.
  • Measuring ranges of ammeters and voltmeters are changed by means of rotary selector switches.
  • The moving element is taut-band suspended by which the sensitivity of meter to vibrations, shocks, etc is minimized.
  • Type LE-3 moving-iron instruments have an up-to-date measuring element located in a double electromagnetic screen which minimizes the effect of external magnetic fields upon meter readings.
  • Type LE-3 instruments are very easy in use and very reliable.
  • Practically uniform scale, common both for direct and alternating currents
  • Reading to a high extent independent of the wave shape of voltage or current.
  • Accurate readings, free of parallax error, due to narrowed pointer end and a mirror scale.

Technical specyfication:

  • Accuracy class:
0,5 for alternating current and a.c. voltage measurements;
1 for direct current and d.c. voltage measurements;
  • Scale length:
110 mm;
  • Insulation test voltage:
2 kV.
  • Overall dimensions (w x l x h):
155 x 210 x 85 mm;
  • Mass approx.:
     1,2 kg.

Ammeter:

Type Number of ranges Measuring range
end values  
Internal
resistance
LE-3 2 75 - 150 mA
300 - 600 mA
750 – 1500 mA
3 – 6 A
19 - 4,8 Ω
1,2 - 0,3 Ω
240 – 60 mΩ
26 – 8 mΩ

We can offer LE-3 instruments with another measuring ranges:
  • 2,5 – 5 A (2 measuring ranges)
  • 5 A (1 measuring range) 
  • Frequency nominal range of use and reference value:
15...50...500  Hz;

Voltmeters:

Type Number of ranges Measuring range end values Current consumption
LE-3 4 7,5 – 15 V
30 – 60 V
75 – 150 V
300 – 600 V
100 – 50 mA
50 – 50 mA
10 – 5 mA
5 – 5 mA

  • Frequency nominal range of use and reference value:
15...50...500  Hz;

Nominal operating conditions:

  • Ambient temperature nominal range of use and reference value:
13...23...33ºC;
  • Ambient air relative humidity:
25...40...75...85 %;
  • Operating position of instrument:
 horizontal.

Standard equipment:

  • Meter LE-3;
  •  Operation manual;
  •  Guarantee certificate.

Others information:

Catalogue card
Operation manual
 
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