| Fluke 789 Specifications |
| Current measurement |
Range |
0-1 A AC or DC |
| Resolution |
1 mA |
| Accuracy |
0.2% + 2 LSD (DC) |
| Range |
0-30 mA |
| Resolution |
0.001 mA |
| Accuracy |
0.05% + 2 lSD |
| Current sourcing |
Range |
0-20 mA or 4-20 mA |
| Resolution |
0.05% of span |
| Drive capability |
24 V Compliance or 1200 Ω @ 20 mA |
| Frequency |
to 19.999 kHz, 0.005% + 1 LSD |
| Continuity |
Beeps for resistance < 100 Ω |
| Voltage measurement |
Range |
0-1000 V AC (true-rms) or DC |
| Resolution |
0.1 mV to 1.0 V |
| Accuracy |
0.1% Rdg + 1 LSD (VDC) |
| Resistance measurement |
to 40 MΩ, 0.2% + 1 LSD |
| Diode test |
2.0 V shoes diode voltage drop |
| Display current and % of span |
Yes |
| Auto Step, Auto Ramp |
Yes |
| Environmental Specifications |
| Operating temperature |
-20°C to 55°C |
| Storage temperature |
-40°C to 60°C |
| Humidity (without condensation) |
95% up to 30°C |
| 75% up to 40°C |
| 45% up to 50°C |
| 35% up to 55°C |
| Temperature coefficient |
0.05 x (specified accuracy) per °C (for temperatures < 18°C or > 28°C) |
| Safety Specifications |
| Electrical safety |
Designed in accordance with IEC 1010-1, ANSI/ISA S82.01-1994 and CAN/CSA C22.2 No 1010.1-92 |
| Overvoltage category |
IEC 1010-1 CAT III 1000 V |
| IEC 1010-1 CAT IV 600 V |
| Maximum voltage |
1000 V RMS |
| Mechanical and General Specifications |
| Size (H x W x L) |
50 x 100 x 203 mm (1.25 x 3.41 x 7.35 in) |
| Weight |
610 g (1.6 lbs) |
| Batteries |
4 AA alkaline batteries |
| Warranty |
3 years |
| Battery life |
140 hours typical (measurement), 10 hours typical (sourcing 20 mA) |
| Shock and vibration |
Random, 2 g, 5-500 Hz |
| 1 meter drop test |