Page 3 - the technical specifications.; Safety symbols; When servicing, use only specified replacement parts.
380976 V3.1 6/08 3 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 to sensors and cables). If it should become necessary to return the instrument for service durin...
Page 4 - Meter Description; ‘COM’; μA
380976 V3.1 6/08 4 Meter Description 1. Transformer Jaws 2. Jaw opening trigger 3. Data Hold & MX/MN button 4. Function Selector 5. Range button 6. Temperature input jack 7. LCD Display 8. ‘COM’ input jack 9. ‘ V ’ input jack 10. Ω µA input jack
Page 5 - Measurements; AC + DC Voltage Measurements; Set the rotary switch to the ‘; AC Current Measurements
380976 V3.1 6/08 5 Measurements AC + DC Voltage Measurements WARNING The maximum input is 600V. Do no attempt voltage measurements above this limit. Exceeding this limit could cause electrical shock and damage to the meter. 1. Set the rotary switch to the ‘ V’ position. 2. Insert the test leads into...
Page 8 - HOLD; KVAR; PF
380976 V3.1 6/08 8 3. The power clamp will process these two sets of data (W L12 , W L23 ), and show the result on the LCD. The W L123 symbol will be shown to indicate 3 φ 3W power. The 3 φ 3W power (in watts) is stored in the meter memory. 4. To read a single data record, press the “ HOLD ” key to ...
Page 9 - W unbalanced power.; NOTE; reading maybe incorrect.; NOTE; W unbalanced power measurements, WRS or WTS could be negative.
380976 V3.1 6/08 9 NOTE Once a phase is selected as COM, users can not change this selection in the subsequent measurement. For example, if S (or L2) phase is selected, S (or L2) phase is always connected to the COM during measurement of W RS (or W L1L2 ) and W TS (or W L3L2 ) in 3 φ 3W unbalanced p...
Page 11 - The W
380976 V3.1 6/08 11 3. Third, measure WT(L3) (refer to the diagram that follows the steps below) a. Disconnect the test probe from the phase where the jaws were clamped in the previous measurement. b. Connect the test probe of the V (red) terminal to the third phase (e.g. T or L3 phase). c. Clamp th...
Page 13 - or ‘M
380976 V3.1 6/08 13 6. W 3 φ 4W = W R(L1) + W S(L2) W T(L3) KVA K W KVAR W W W 3 4 2 3 4 2 3 4 φ φ φ = + PF KW KVA W W W 3 4 3 4 3 4 φ φ φ = 7. Set the rotary switch to another position to exit this mode and clear the stored data. NOTE 1. The "+" sign printed on meter must face the power sou...
Page 15 - Meter Control Keys; Data Hold Function; Using the HOLD button for Power Measurements; RANGE Key
380976 V3.1 6/08 15 Meter Control Keys HOLD - MX/MN Key Data Hold Function Press this key momentarily to put the meter into Data Hold mode ( HOLD will appear on the LCD). In this mode, the meter freezes the displayed reading. To exit the Data Hold mode, press the key again (the HOLD icon will switch...
Page 16 - Automatic Sleep Mode and Battery Replacement; the OFF position and then back to the function desired.; Auto Sleep Disable; Release HOLD when the clock icon appears on the LCD.; Battery Replacement
380976 V3.1 6/08 16 Automatic Sleep Mode and Battery Replacement The Meter is powered by a 9V battery. An AUTO SLEEP feature is included to preserve battery life. Note: The Auto Power OFF feature is disabled when the meter is in the MIN/MAX mode Note: In the sleep mode the meter continues to draw a ...
Page 17 - Specifications; Max. voltage between any terminal and ground: 600Vrms
380976 V3.1 6/08 17 Specifications General Specifications Display Dual Display; 4-digit, 10,000 count (0 to 9999) LCD Jaw Opening 1.6” (42mm) Max. Input limit Max. voltage between any terminal and ground: 600Vrms Sampling rate 2.5 times per second (Digital Display); Once every 6 seconds (KW, KVA, an...
Page 19 - Capacitance
380976 V3.1 6/08 19 M Ω (Resistance) Range Resolution Accuracy Overload Protection 9.999M Ω 1K Ω 99.99M Ω 10K Ω ±(5% + 10d) 600V Capacitance Range Resolution Accuracy Overload Protection 10.000 μ F 1nF 100.00 μ F 10nF 1000.0 μ F 100nF ±(1.5% + 5d) 7000 μ F 1 μ F ±(2.5% + 15d) 600V Diode (Continuity ...
Page 20 - Product specifications subject to change without notice; Frequency; Calibration and Repair Services; Extech offers repair and calibration services
380976 V3.1 6/08 20 Support line (781) 890-7440 Technical support: Extension 200; E-mail: [email protected] Repair & Returns: Extension 210; E-mail: [email protected] Product specifications subject to change without notice For the latest version of this User Guide, Software updates, and other u...
