Extech 403380 Instruction Manual

INSTRUCTION MANUAL

Model 403380

Autoranging DMM ProbeMeterTM

• Measures voltage, resistance, frequency,

capacitance, temperature, and duty cycle.

• Back lit LCD with Autorange and full function

displays

• Audible continuity and diode tests

1. INTRODUCTION

Congratulations on your purchase of Extech’s Autoranging DMM ProbemeterTM. This
professional meter, with proper care, will provide years of safe reliable service.

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2. SPECIFICATIONS

2.1 General Specifications
Display 2500 count backlit LCD

Polarity Automatic, positive implied, negative polarity indication
Overrange "OL" or "-OL" is displayed
Low battery indication The low battery icon is displayed when the battery voltage

drops below the operating level
Measurement rate 2.5 times per second, nominal
Operating conditions 32 oF to 104oF (0 to 40oC) at <70% relative humidity
Storage Temperature -4oF to 140oF (-20 to 60oC), 0 to 80% R.H.
Accuracy Stated accuracy at 73.4oF ±9oF, <75% relative humidity
Auto Power off After 30 minute period of non-use
Safety EN61010-1 protection class II over-voltage category

(CAT II 600V) pollution degree 2
Power 4 x 1.5V (AAA size) batteries
Battery life 500 hours typical with alkaline
Dimensions 6.7 (H) x 1.7 (W) x 1.6 (D)” (170mm x 44mm x 40mm)
Weight 4.5 oz. (140g) including batteries.

2.2 Function Specifications
Function Range Resolution Accuracy
DC Volts

Input impedance: 10MΩ

Overload protection:

600VAC/DC

AC Volts (50-500Hz)

Input impedance: 10MΩ

Overload protection:

600VAC/DC

Resistance

Open ckt. V: 0.4VDC

Overload protection:

500VAC/DC

Capacitance

(Autoranging)

Overload protection:

250mV 100uV ±(0.25% rdg + 5dgts)

2.5V 1mV

±(0.25% rdg + 1dgt)
25V 10mV
250V 0.1V
600V 1V
250mV 100uV not specified

2.5V 1mV

±(0.75% of rdg + 4dgts)
250V 0.1V
600V 1V
250Ω 0.1Ω

2.5kΩ 1Ω

±(0.3% rdg + 3dgts)

±(0.3% rdg + 1dgts)
25kΩ 10Ω
250kΩ 0.1kΩ

2.5MΩ 1kΩ
25MΩ 10kΩ
250nF 0.1nF

±(3.5% rdg + 4 dgts)

±(5.0% rdg + 10dgts)

2.5uF 1nF
25uF 10nF

500VAC/DC

Frequency

(Autoranging)

Sensitivity: 1.0V min.

Overload protection:

500VAC/DC

(Type K thermocouple)
Duty Cycle (2Hz-1kHz)

Overload protection:

5Hz 0.001Hz

±(0.05% rdg + 2dgts).
50Hz 0.01Hz
500Hz 0.1Hz
5kHz 1Hz

-4oF to
2498oF

0.1oF/1oF

±(2.0% rdg + 6oF) –4oF to 923oF Temperature

±(3.0% rdg + 4oF) 923oF to 2498oF
10%-90% 0.1% ±5dgts@2Vrms min

Pulse Width : 50uSec

500VAC/DC

Continuity

Audible alert <100Ω; Overload protection: 500VDC/AC

Diode Accuracy: ±(3.0% rdg + 3dgts); Resolution: 1mV.

Test current: 0.25A ±0.2mA; Test voltage: <1.6V.

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3. FRONT PANEL DESCRIPTION

1 Positive test lead (in meter jack)
2 Negative test lead (in meter jack)
3 Negative test lead (test end)
4 LCD Display
5 Select key
6 Temperature, duty cycle, Hz key
7 Data Hold / Backlight key
8 Function switch
9 Handle

10 Thermocouple input socket (top)

4. SAFETY INFORMATION

The following safety information must be observed to insure maximum personal safety
during the operation of this meter:

1. Do not use the meter if the meter/test leads appear damaged or if you suspect that the
meter is not operating properly.

2. This meter is not recommended for high voltage industrial use; for example, not for
measurements of 440 VAC or 600 VAC industrial power mains. The unit is intended
for use with low energy circuits to 600V AC/DC or high energy circuit to 250VAC or DC.

3. Use caution when working > 60V dc / 30V ac rms. Such voltages pose a shock hazard.

4. When using the probes, keep your fingers behind the finger guards on the probes.

5. Measuring voltage which exceeds the limits of the meter may cause damage and
expose the operator to a shock hazard. Always respect the voltage limits as stated on
the meter.

6. If the equipment is used in a manner not specified by the manufacturer, the protection
provided by the instrument may be impaired.

7. Refer to the following International Safety Symbols

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