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LEM LH2040 AC/DC Clamp-on Multimeter
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LEM LH2040
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Features:
- 2000A
- AC and DC Amps, Volts, Ohms, Diode and Continuity Test
- Large jaw capacity takes 50mm or 2 x 30mm cables
- True RMS measurement of complex waveforms and analysis of AC and DC current components
- Auto-ranging and Auto-zeroing
- Excellent accuracy, even for distorted or nonsinusoidal A and V
- Display-Hold and Max-Hold (surge) modes for convenience in use
- Analogue outputs for recorder, logger or oscilloscope
- Conformance to IEC1010 and EMC standards
Advantages:
- AC, DC and AC + DC True RMS current measurement
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Description
High Accuracy
Advanced jaw design means that 40-series accuracy is little affected by external magnetic fields or off-centre conductor positioning. Utilisation of Hall effect technology ensures a broad flat frequency response resulting in optimum accuracy even when harmonics are present.
IEC 1010 and EMC Conformance
IEC 1010 safety features including a tactile barrier and special jaw design provide the user with confidence when making measurements in hazardous voltage areas.
Conformance to EMC standards ensures high reliability through
reduced susceptibility to electromagnetic interference.
True RMS measurement
By using True RMS measurement techniques the 40-series instruments avoid errors (up to 50%) which can occur when nonsinusoidal waveforms created by today’s complex loads are measured using traditional average-reading techniques. True RMS measurements are available for AC, DC (A, V) and AC+DC (A).
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Models, Options, & Accessories
| Model |
Description |
List Price |
Sale Price |
| LH2040 |
60.56.69.000.0, AC/DC TRMS 400/2000A CLAMP DMM - Discontinued - no replacement |
| LH240 |
60.56.45.000.0, AC/DC TRMS 40/200A CLAMP - Discontinued - no replacement |
| LH1040 |
60.56.60.002.0, AC/DC TRMS 400/1000A CLAMP - Discontinued - no replacement |
Specifications
| NON-INVASIVE CURRENT MEASUREMENT |
| Ranges (auto-ranging) |
400A, 2,000A |
| Method |
DC or AC True RMS, or DC only |
| Resolution |
100mA (400A range)
1A (2,000A range) |
| Accuracy |
± 1.3 % of reading ± 3 digits (1) |
| Crest Factor |
6 maximum for True RMS measurements |
| Maximum measurable load |
2,000A DC or AC peak |
| Maximum permissible overload |
10,000 Amps |
| ANALOGUE OUTPUT |
| Switchable Instantaneous or RMS (100 ms) output |
0.5mV/A |
| Analogue output accuracy |
± 1.3% of reading ± 1mV |
| Voltage Measurement |
| Methods of measurement |
AC True RMS or DC |
| Ranges (auto-ranging) |
400V, 600V |
| Maximum overload |
1,000V |
| Accuracy |
±1% of reading ± 3 digits (1) |
| Resolution |
100mV (400V range) 1V (600V range) |
| Crest Factor |
6 for V < 1,000 V peak |
| Input impedance |
1 MΩ |
| Resistance, Continuity and Diode Testing |
| Ω ranges (auto-ranging) |
400 Ω, 4 kΩ |
| Ω resolution |
0.1 Ω (400 Ω range)
1 Ω (4 kΩ range) |
| Ω accuracy |
± 1% of reading ± 3 digits (1) |
| Continuity sounder |
Toggled on & off by )))) button;
(Ω range only) Sounds when resistance < 50Ω |
| Input protection, Ω & diode test |
To 600 V, DC or sine wave RMS |
| Diode-test |
3.2V max. open Reads forward-biased diode
Circuit, 0.3mA short-circuit Voltage to 2,000 mV |
| Diode-test accuracy |
± 1 % of reading ± 2 digits |
| Frequency Response (Measurements and Analogue Output) |
| AC only True RMS V & A |
15Hz to 1kHz (3,4) |
| DC True RMS |
A DC + 15Hz to 1KHz (3,4) DC V and A DC only |
| Display |
| Size and type |
4000-count LCD
12mm / 0.5-inch characters |
| Status indication |
Low Battery, Data Hold, Pk (MAX Hold), AC, DC, Diode Test, Ω, )))) (Continuity) |
| Refresh rate |
3 times per second |
| Power Supply |
| Battery type |
9 V Alkaline: MN1604, PP3
IEC 6LR61 or equivalent |
| Battery life |
Typically 40 hours |
| Mechanical Data |
| Dimensions (H x W x D) |
251 x 98 x 52 mm
9.88 x 3.86 x 2.05 inches |
| Weight |
500gm / 1.1 lbs |
| Jaw Capacity |
1 x 50 mm/ 2.0-inch ∅ cables or 2 x 30mm/ 1.2-inch ∅ cables |
| Jaw Opening |
55mm/ 2.2 inches |
| Environmental Data |
| Operating Temperature |
0 °C to 50 °C (32 °F to 122 °F) |
| Temperature Coefficient |
± 0.1% of reading per °C
(Current) ± 0.06% of reading per °F |
| Storage Temperature |
-20° to 60° (-4 °F to 140 °F) |
| Safety |
All models comply with IEC1010-1, 600V working, Installation category III, Pollution degree 2. |
| Maximum Safe Voltages |
Current measurement 600V AC RMS or DC between (bare conductors) uninsulated conductor & ground |
| Voltage measurement |
600V AC RMS or DC between input terminals or between live terminal & local ground. |
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