Extech Instruments 380224 Bedienungsanleitung

INSTRUCTION MANUAL

Model 380224

Heavy Duty Phase Indicator DMM

•High Accuracy

•Voltage, Resistance, Frequency,

Capacitance, and Temperature functions

•Phase indication

•Low battery and over range indication

380224 Ver. 1.5 5/05

Introduction

Congratulations on your purchase of Extech’s Phase Indicator DMM. This professional

meter, with proper care, will provide years of safe reliable service.

Specifications

General Specifications

Display ±1999 (3-1/2 digit) count LCD with Auto Polarity

Sample Rate Approx. 2 samples per second

Over-range Indication "OL or -OL" is displayed

Low Battery Indication Battery symbol appears on LCD

Power Supply 9V battery (NEDA 1604 or equivalent)

Battery Life Approx. 200 hours with carbon-zinc battery

Operating

Temperature/Humidity 32oF to 122oF (0oC to 50oC) / < 70% RH

Storage

Temperature/Humidity -4oF to 132oF (-20oC to 60oC) / < 80% RH

Dimension / Weight 5.8 x 2.8 x 1.5” (147x70x39mm) 11.8 oz. (340g)

Supplied accessories Test leads, temp. probe, fuse, battery, wrist-strap, and manual

Range Specifications

Accuracy specified for a period of 1 year after calibration at 23oC ± 5oC

Mode Measurement

Range Resolution Accuracy

% Rdg. Input

Protection Comments

DCV 2,20,200,600V 1mV +(1.2% + 1 d) 600V AC/DC Input Z = 10MΩ

ACV 200, 600V 100mV +(2.0% + 4 d) 600V AC/DC Input Z =4.5MΩ

50-500HZ

CAP 20/200/2000µF, 20mF +(4.0% + 10 d) 0.1A/250V

fast-blow fuse Test freq.: 21Hz

Test V.: <3.5V

Freq. 10Hz to 100kHz +(0.5% + 2 d) 500VDC or

AC Sensitivity:

2Vrms min

Temp. -4oF to 752oF (-20oC to 400oC) +(2.0% + 2oC)

+(2.0% + 4oF) 500VDC or

AC Sensor: K type

thermocouple

(incl.)

Phase 45 to 450Hz; Voltage range: 80 to 480V 2V

200Ω.1Ω+1.0% + 4 dig VOC: 3.0VDC

2/20/200kΩ1/10/100 Ω V

OC: 0.3VDC

2MΩ1kΩVOC: 0.3VDC

20MΩ10kΩ+(2.0% + 4 d) VOC: 0.3VDC

Ω

200M/2GΩ100k/1GΩ+(5.0% + 10 d)

500V

DC/AC rms

VOC: 3.0VDC

Diode Test I: 1mA (±.6mA); Accy: +(3.0% + 1d); VOC: 3VDC typ.; Overload Prot:

500VDC/AC

Cont. Continuity Audio alert < 100Ω; Overload Protection: 500VDC/ACrms

380224 Ver. 1.5 5/05

Front Panel Description

1. LCD Display

2. Rotary Select Switch

3. ‘F’ (Farad) Capacitance input jack

4. ‘T’ input jack

5. Rubber Holster

6. COM and ‘S’ input jack

7. Voltage, Resistance, ‘R’, Hz,

and Temperature input jack

Preparation for measurement

Safety Information

The following information must be observed to insure maximum personal safety while

operating 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. The user should never be grounded when taking measurements. Do not touch

exposed metal pipes, outlets, fixtures, etc. which may be at ground potential. The

user should be isolated from ground by using dry clothing, rubber soled shoes,

rubber mats, or other approved insulating material.

3. Remove power to the circuit under test before cutting, unsoldering, or breaking the

circuit. Small amounts of current can be dangerous.

4. Use caution when working above 60V DC or 30V AC rms. Such voltages pose a

shock hazard.

5. When using the test leads or probes, keep fingers behind the probe's finger guard.

6. Measuring voltage which exceeds the limits of the multimeter may damage the meter

and endanger the user. Always recognize the meter's limits as stated on the front of

the meter.

International Symbols

6 7

380224 Ver. 1.5 5/05

Operation

Voltage Measurements

a. Connect the RED test lead to the "V/Ω" input jack and connect the BLACK test lead to

the COM (-) input terminal.

b. Set the rotary switch to the desired AC or DC voltage range. If the magnitude of the

voltage is not known, set the switch to the highest range and reduce until a satisfactory

reading is obtained.

c. Connect the test leads to the unit under test (load, circuit, etc.) and observe reading on

the LCD. For DC, negative polarity is automatically displayed.

Resistance and Continuity Measurements

a. Set the rotary switch to the desired resistance range or continuity position.

b. Remove power to the circuit under test (external voltage across device under test will

cause invalid readings).

c. Connect the RED test lead to the "V/" input terminal and the BLACK lead to the COM

(-) input terminal.

d. Connect the other ends of the test leads to the circuit under test. For resistance

measurements, the LCD reading is the value of resistance measured. In Continuity

mode, the audible alert sounds if the resistance measured is below 100Ω.

NOTE: The 2000MΩand 200MΩranges have a fixed 10-count offset. When the test

leads are shorted together, the meter will indicate "10".

This residual values (10MΩ on the 2000MΩ and 1MΩ on the 200MΩrange) must

be subtracted from readings taken in these ranges.

Diode Measurements

a. Set the rotary switch to the diode position.

b. Remove power to the circuit under test (external voltage across device under test will

cause invalid readings).

c. Connect the RED test lead to the "V/" input terminal.

d. Touch probes to the diode. A correct forward voltage drop is 0.6V (silicon diode) and

0.3V (germanium diode).

e. Reverse the probe connection to the diode. If the diode is good, "OL" (overload) will

display. If the diode is shorted, a value near 0mV will be displayed.

f. If the diode is OPEN, "OL" will display in both measurement directions.

Capacitance Measurements

a. Set the rotary switch to the desired capacitance range.

b. Connect the RED test lead to the "F" input terminal and the BLACK test lead to the

COM (-) input terminal.

c. Connect the test leads to the capacitor under test, observing polarity for polarized

caps.

d. Read the capacitance value in farads on the meter's LCD.

Temperature Measurements

a. Set the rotary switch to the desired temperature range (C or F).

b. Connect a K-type thermocouple probe with banana jacks to the TEMP and COM input

terminals. Observe proper polarity: The TEMP terminal is for the positive probe lead;

COM is for the negative probe lead.

c. Read the temperature from the LCD display.

380224 Ver. 1.5 5/05



Support line (781) 890-7440

Technical support: Extension 200; E-mail: support@extech.com

Repair & Returns: Extension 210; E-mail: [email protected]

Product specifications subject to change without notice

For the latest version of this User’s Guide, Software updates, and other

up-to-the-minute product information, visit our website: www.extech.com

Extech Instruments Corporation, 285 Bear Hill Rd., Waltham, MA 02451

Frequency Measurements

a. Set the rotary switch to the "Hz" position.

b. Connect the RED test lead to the "V/" input terminal and the BLACK test lead to the

COM (-) input terminal.

c. Connect the test leads to the points of measurement and read the frequency value in

hertz (Hz) on the meter's LCD.

Phase Indicator Measurements

a. Set the rotary switch to the "3 Ø RST" position.

b. Connect the RED test lead to the "R" input terminal, the BLACK test lead to the "S"

input terminal, and the YELLOW test lead to the "T" input terminal.

c. Remove power to the 3Ø device before touching test leads to the measurement points.

d. Attach test leads to the measurement points and apply power to the device under test.

e. If the wiring is correct with regard to phase, the RST and "OK" LCD icons will appear

and the audible tone will sound continuously. If the connection is incorrect, the "ER"

LCD icon will appear. If the error icon (ER) is displayed, remove power to the device

under test, reconfigure the wiring before applying power again, and test for correct

phase. Repeat as necessary.

Maintenance

Battery Replacement

The battery symbol on the LCD alerts the user of low battery voltage. Remove the test

leads from the circuit under test before replacing battery.

a. Remove the test leads and turn the meter OFF

b. Remove the three (3) screws from the rear of the meter. Open the meter housing.

c. Replace the battery with a 9V NEDA 1604 or equivalent, reassemble meter, and

replace screws.

Electromagnetic Interference

Electrical noise or intense EMF in the vicinity of the meter may disturb the measurement

circuit. The meter may respond to unwanted signals that may be present within the

measurement circuit. Users should exercise care and take appropriate precautions to

avoid misleading measurements in the presence of electromagnetic interference.

Calibration and Repair Services

Extech offers complete repair and calibration services for all of the products we sell. For

periodic calibration, NIST certification or repair of any Extech product, call customer

service for details on services available. Extech recommends that calibration be

performed on an annual basis to insure calibration integrity.

380224 Ver. 1.5 5/05

Warranty

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and

workmanship for one year from date of shipment (a six month limited warranty applies on sensors and

cables). If it should become necessary to return the instrument for service during or beyond the warranty

period, contact the Customer Service Department at (781) 890-7440 ext 210 for authorization. A Return

Authorization (RA) number must be issued before any product is returned to Extech. The sender is

responsible for shipping charges, freight, insurance and properpackaging to prevent damage in transit.

This warranty does not apply to defects resulting from action of the user such as misuse, improper wiring,

operation outside of specification, improper maintenance or repair, or unauthorized modification. Extech

specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not

be liable for any direct, indirect, incidental or consequential damages. Extech's total liability is limited to

repair or replacement of the product.

The warranty set forth above is inclusive and no other warranty, whether written or oral, is expressed or

implied.

in whole or in part in any form.

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