Specifications - IDEAL 61-920 Mode D'emploi

3. Specifications

Function Range
20Ω
200Ω
Earth
resistance
(Auto-ranging)
1200Ω
100mA
AC current (ACA)
1000mA
(sine wave)
(50Hz/60Hz)
10A
(Auto ranging)
30A
* Crest factor <2.5 Accuracy at sine wave ±1% (50Hz/60Hz, peak value shall not exceed 60A)
* In the following cases, zero will be displaed on the LCD: At20Ω range of Earth resistance function: 0.04Ω or less.
* Auto ranging shifts to upper range when the input exceeds 105% of the selected range, and shifts to the lower
range when the input falls under 80% of the lower range.
• Operating system Earth resistance function:
AC current function:
• Display Liquid crystal display with a maximum count of 2099
• Over-range indication "OL" is displayed when input exceeds the upper limit of a
measuring range
• Response time Earth resistance function:
AC current function:
• Sample rate Approx. once per second
• Location for use Altitude 2000m or less, Indoor/ outdoor use
• IP protection degree IP40
• Temperature & 75°F±5%/Relative humidity 85% or less
humidity range (no condensation)
(guaranteed accuracy)
• Operating temperature 14°F ~ 104°F/Relative humidity 85% or less (no condensation)
& humidity range
• Storage temperature -4°F ~ 140°F/Relative humidity 85% or less
& humidity range (without batteries, no condensation)
• Power source (4) batteries AA
• Current consumption Approx. 50mA (max. 100mA)
• Measurement time Approx. 12 hours (when alkaline batteries are used),
Approx. 24 hours (when alkaline battery is used)
• Auto power-off Turns power off after 10 minutes of non-use.
Measuring
Resolution Accuracy
range
0.01Ω 0.00 ~ 20.99Ω ±1.5%±0.05Ω
16.0 ~ 9.99Ω ±2%±0.5Ω
0.1Ω
100.0 ~ 209.9Ω ±3%±2Ω
160 ~ 399Ω ±5%±5Ω
1Ω
400 ~ 599Ω ±10%±10Ω
10Ω 600 ~ 1260Ω
0.1mA 0.0 ~ 104.9mA ±2%±0.7mA
1mA 80 ~ 1049mA
0.01A 0.80 ~ 10.49mA
0.1A 8.0 ~ 31.5AmA
Constant voltage injection, Current
detection, (Frequency: Approx.
2400Hz) Dual Integration
Successive Approximation
(True-RMS)
Approx. 7 seconds
Approx. 2 seconds
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• Applicable standards
• Electrostatic discharge
immunity
• Withstand voltage
• Insulation resistance
• Conductor size
• Dimension
• Weight
— • Accessories
±2%
<Supplemental remarks>
Effective value (RMS)
Most alternating currents and voltages are expressed in effective values, which are also referred
to as RMS (Root-Mean-Square) values. The effective value is the square root of the average of
square of alternating current or voltage values. Many clamp meters using a conventional
rectify- ing circuit have "RMS" scales for AC measurement. The scales are calibrated in terms of
the effective value of a sine wave through the clamp meter responding to the average value. The
cali- bration is done with a conversion factor of 1.111 for sine wave, which is found by dividing
the effective value by the average value. These instruments are therefore in error if the input
voltage or current has some other shape than a sine wave.
CF (Crest Factor) is found by dividing the peak value by the effective value.
Examples:
Sine wave: CF=1.414 Square wave with a 1: 9 duty ratio: CF=3
IEC61010-1: 2001 (CAT. IV 300V Pollution degree 2) IEC61010-2-032:
2002 IEC61326: 2000 (EMC standard)
Performance criteria B
AC5320Vrms/ 5 seconds
Between the Transformer jaws fitted parts and Case enclosure (except
for jaws)
50MΩ or more at 1000V
Between the Transformer jaws fitted parts and Case enclosure (except
for jaws)
Approx. 1.25" in diameter max.
9.7"(L) x 4.7"(W) x 2.1"(D)
Approx. 1.7 lbs (including batteries)
Battery AA : 4 pcs.
Instruction manual : 1 pc.
Resistor for operation check : 1 pc.
Hard case : 1 pc.
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