Extech 380609 Instruction Manual
INSTRUCTION MANUAL
Model 380609
AC Clamp Watt Meter
• Measure Watts, ACV, DCV, ACA,
Ohms, Diode
• Large 3 ½ digit LCD
• Zero adjustment for Watt readings
• AC current to 600A
• AC power to 10000 Watts
1. INTRODUCTION
Congratulations on your purchase of Extech’s Watt Clamp Meter. This professional meter,
with proper care, will provide years of safe reliable service.
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2. SPECIFICATIONS
Display 3 ½ Digit 0.5” LCD (+1999 count)
Functions Watts, DCV, ACV, ACA, Ohms, Diode
Polarity “-“ indicates negative polarity
Current sensor Hall effect sensors
Overload Display indicates “1” or “-1”
Watt zero adjustment Built-in adjustment knob
Display rate Approximately 0.4 seconds
Battery Heavy duty or alkaline 9VDC (006P, MN1604 or
equivalent)
Operating temperature 320F to 1220F (00C to 500C)
Operating Humidity < 80% RH
Power consumption Approximately 15mA DC
Weight 1lb (450gm) including battery
Dimensions 9.1 x 2.9 x 1.5” (230 x 74 x 38mm) (HWD)
Jaw opening 1.5” (38mm)
Standards IEC 1010 Category III 600V
Function (model) Measurement
Range
2,000 Watts 1 Watt +(2.5%+8d) AC Watts
(true power)
10,000 Watts 10 Watts +(3%+8d)
Resolution Accuracy
FS. + digits
Voltage < 600VAC
Current: < 50ACA
DC Voltage 200V 0.1V +(0.8%+1d) 600VDC
AC Voltage 600V 1V +(1%+2d) 600VAC
Ohms
2kΩ 1Ω
200A 0.1A +(2%+10d) AC Current
+(1%+1d) 250VAC & VDC
1000ACA
600A 1A +(2%+5d)
Diode 2.8V open circuit
Continuity
Notes:
Beeper sounds if the resistance is less than 50Ω
ACV and DCV input impedance: 10MΩ
Watt measurement allowable input signal:
1) Power factor: > 0.5 to < 1.0
2) AC Current: > 0.5A to < 30A when ACV is < 250V
> 2A to < 30A when ACV is > 250V
3) ACV must be > 20V to < 500V
4) Frequency range: 45Hz to 65Hz
Watt accuracy is specified under the following conditions:
1) AC current: > 3.0A to < 30A
2) AC voltage: 110V + 15% or 220V + 15%
3) Power factor: > 0.8 to < 1.0
4) Frequency: 50Hz or 60Hz
ACA and ACV specifications stated at 50/60Hz and 23oC + 5oC
ACA and ACV frequency response: 40Hz to 400Hz
Overload
Protection
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