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All-round performers
The model numbers Fluke 73 and 77 are an important part of Fluke’s reputation. In many years of service they have become the preferred models for a large number of professionals. The Fluke 73 and 77 offer exactly the right fit for a wide range of measurements. They are truly all-round performers. The 73 III is perfectly suited for many electronic applications and has the "classic" 70 series design with removable holster. The 77 III has all the features and functions for a wide range of industrial applications packaged in an ergonomic case with integrated holster. Both models come with the unique lifetime warranty.
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- 0.3% basic accuracy
- 3200 count resolution
- Digital display with analog bargraph
- Manual and automatic ranging
- Automatic Touch Hold
- Resistance, continuity and diode measurements
- Ergonomic case with integrated protective holster (Fluke 77 III)
- "Classic" design with removable holster (Fluke 73 III)
- Sleep mode preserves battery life
- Lifetime warranty
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Safety conformance
73-III: All inputs are protected to EN61010-1 CAT II 600V
77-III: All inputs are protected to EN61010-1 CAT III 600V / CAT II 1000V
UL, CSA, TÜV listed
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| Specifications |
| Voltage DC |
| Maximum Voltage: |
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Fluke 73: 600V
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Fluke 77: 1000V |
| Basic Accuracy:
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0.3%
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| Maximum Resolution:
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0.1 mV
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| | Voltage AC |
| Maximum Voltage: |
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Fluke 73: 600V |
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Fluke 77: 1000V |
| Basic Accuracy:
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2% |
| Maximum Resolution:
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1 mV |
| | Current DC |
| Maximum Current: |
10 A |
| Maximum Resolution:
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0.01 mA |
| Basic Accuracy: |
1.5% |
| | Current AC |
| Maximum Current: |
10 A |
| Maximum Resolution: |
0.01 mA |
| Basic Accuracy: |
2.5% |
| | Resistance |
| Max Resistance:
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32 MΩ |
| Basic Accuracy:
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0.5% |
| Maximum Resolution:
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0.1 Ω |
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| Environmental Specifications |
| Operating Temperature | | | Storage Temperature | | | Humidity (Without Condensation) |
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0% - 90% (0°C - 35°C) |
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0% - 70% (35°C - 50°C) |
| | Operating Altitude | |
| Safety Specifications |
| Overvoltage category |
| Fluke 73 III: |
EN 61010-1 to 600 V CAT II |
| Fluke 77 III: |
EN 61010-1 to 600 V CAT III/1000V CAT II |
| | Agency Approvals | |
| Mechanical & General Specifications |
| Size |
| Fluke 73 III: |
166 x 75 x 28 mm |
| Fluke 77 III: |
190 x 89 37 mm |
| | Weight |
| Fluke 73 III: |
340 g |
| Fluke 77 III: |
365 g |
| | Warranty | | | Battery Life |
| Alkaline: |
~2000 hours typical |
| | Shock & Vibration |
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Per MIL-T-PRF 28800F Class III |
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