Pocket Multimeter
Contents
1. 4F position Resistance is the default function Turn off power to the circuit being measured Never measure resistance across a voltage source or on a powered circuit Discharge any capacitors that may influence the reading Connect the test probes across the resistance Read the display If OL appears on the highest range the resistance is too large to be measured or the circuit is an open circuit won se uS oe eo NO t A continuous beep tone indicates a complete circuit Turn off power to the circuit being measured Discharge any capacitors that may influence the reading e the test probes across the resistance or two measurement nodes Listen for the tone that indicates continuity 120 Q Press the SELECT button momentarily AGAIN to select Diode test function The annunciator appears on the display The reading shows the approximate voltage drop across the test leads Normal forward voltage drop forward biased for a good silicon diode is between 0 400 V to 0 900 V A reading higher than that indicates a leaky diode defective A zero reading indicates a shorted diode defective OL indicates an open diode defective Reverse the test leads connections reverse biased across the diode The digital display shows OL if the diode is good Any other readings indicate the diode is defective Press the SELECT button momentarily AGAIN to select the Capacitance function Turn off power to the circuit being measured D2. EN61000 4 2 1995 and EN61000 4 3 1996 This product complies with requirements of the following European Community Directives 89 336 EEC Electromagnetic Compatibility and 73 23 EEC Low Voltage as amended by 93 68 EEC CE Marking However electrical noise or intense electromagnetic fields in the vicinity of the equipment may disturb the measurement circuit Measuring instruments will also respond to unwanted signals that may be present within the measurement circuit Users should exercise care and take appropriate precautions to avoid misleading results when making measurements in the presence of electronic interference Accessories Battery installed and User s manual Optional Accessories H PM protective holster and VC3 soft carrying pouch Electrical Specifications Accuracy 23 C 5 C and lt 75 R H RF Field 3 V m Specified accuracy 45 d Capacitance not specified DC Voltage Range Accuracy 400 0 mV 1 0 2 dgt 4 000 V 40 00 V 400 0 V 2 0 2 dgt 600 V 2 5 4 dgt NMRR gt 50 dB 50 Hz 60 Hz CMRR gt 120 dB dc 50 Hz 60 Hz Rs 1 kQ er PES 10 MQ 30 pF nominal 1000 MQ for 400 0 mV range 10 AC Voltage 500 0 pF 3000 uf Range Accuracy 50 Hz 60 Hz 4 000 V 40 00 V 400 0 V 2 0 5 dgt 60 Hz 500 Hz 4 000 V 40 00 V 400 0 V 3 0 5 dgt 50 Hz 500 Hz 600 V 3 5 5 dot Input Impedance 10 M
3. periods of longer han 60 days remove the battery and store it separately Troubleshooting f the instrument fails to operate check battery leads and replace as necessary Double check operating procedure as described earlier in this manual Refer to the LIMITED WARRANTY section for obtaining warranty or repairing service Battery Replacement f the meter starts up with persistent resetting display or with low battery icon turns on replace the battery The meter uses one 3 V coin battery EC CR2032 To replace the battery 1 2 3 Turn off the meter and disconnect the test leads from live circuits Loosen the screw on the case bottom Lift the end of the case bottom nearest the input test leads until it unsnaps from the case top Replace the battery cover and tighten the screw Recycle the battery using approved methods Replace the battery Observe battery polarities with positive faces up towards the case bottom Replace the case bottom and ensure that the snap on the case top near the LCD side is engaged Replace and tighten the screw A AAWARNING To avoid electrical shock disconnect test leads from live circuits before opening the case Do not operate with open case Limited Warranty and Limitation of Liability Your Meterman product will be free from defects in material and workmanship for 1 year from the date of purchase This warranty does not cover fuses disposable batteries or damage from accident n
4. O 30 pF nominal CMRR gt 60 dB DC to 60 Hz Rs 1 kQ Capacitance Range Accuracy 500 0 nF 5 000 uF 50 00 pF 3 5 6 dgt 3Updates gt 1 minute on large values Additional 50 00 nF range accuracy is not specified 2Accuracies with film capacitor or better Specified with battery voltage above 2 8 V half full battery Accuracy decreases gradually to 12 at low battery warning voltage of approx 11 Ohms Range Accuracy 400 0 Q 1 5 6 dot 4 000 KQ 40 00 KO 400 0 KQ 1 0 4 dgt 4 000 MQ 1 5 4 dgt 40 00 MQ 2 5 4 dgt Open Circuit Voltage 0 4 V dc typical Frequency Range Accuracy 400 Hz 4 kHz 40 kHz 400 kHz and 1 MHz 0 5 4 dgt Specified at Input Voltage 20 V ac rms Input Signal Sine wave or Square wave with duty cycle gt 40 amp 70 Sensitivity V peak 5 Hz 100 kHz 1 1 3 Vp 100 kHz 500 kHz gt 2 2 Vp 500 kHz 1 MHz 42Vp Diode Tester Test Current Typical 25 mA Open Circuit Voltage 1 6 V dc Audible Continuity Tester Open Circuit Voltage 0 4 V dc typical Audible Threshold between 10 Q and 120 Q 12
5. db Meterman PM51 Pocket Multimeter Users Manual e Mode d emploi e Bedienungshandbuch e Manual d Uso e Manual de uso PN 2153024 August 2004 2004 Meterman Test Tools All rights reserved Printed in Taiwan dek Meterman POCKET METER us PM51 Hav cnr TESTES LCD display Rotary switch to select functions and to turn the power on or off SELECT button to select alternate functions Permanently attached red test lead for positive polarity and black test lead for ground reference 9 AI HOLD button to freeze the display for later viewing PM51 Pocket Meter Contents Introduction Safety Information Symbols Used in this Manual Making Measurements Selecting Functions V dc and V ac Functions Resistance Continuity Diode and Capacitance Functions Frequency Function Additional Features Product Maintenance Maintenance Cleaning Troubleshooting Battery Replacement Specifications Introduction The PM51 meter is a shirt pocket size meter only 19 mm 75 in wide and weighing less than 85 g 3 oz With full functionality offering AC and DC voltage to 600 V resistance to 40 MQ capacitance to 300 uF frequency to 1 MHz continuity with beeper and diode test Fully autoranging the PM51 offers seven different measurement functions with 27 full ranges of measurement The digital display is oversized with large digits and
6. eglect misuse alteration contamination or abnormal conditions of operation or handling Resellers are not authorized to extend any other warranty on Meterman s behalf To obtain service during the warranty period return the product with proof of purchase to an authorized Meterman Test Tools Service Center or to a Meterman dealer or distributor See Repair Section for details THIS WARRANTY IS YOUR ONLY REMEDY ALL OTHER WARRANTIES WHETHER EXPRESS IMPLIED OR STAUTORY INCLUDING IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY ARE HEREBY DISCLAIMED MANUFACTURER SHALL NOT BE LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES ARISING FROM ANY CAUSE OR THEORY Since some states or countries do not allow the exclusion or limitation of an implied warranty or of incidental or consequential damages this limitation of liability may not apply to you Repair All test tools returned for warranty repair or for calibration should be accompanied by the following your name company s name address telephone number and proof of purchase Additionally please include a brief description of the problem or the service requested and include the test leads with the meter Non warranty repair or replacement charges should be remitted in the form of a check a money order credit card with expiration date or a purchase order made payable to Meterman Test Tools In Warranty Repairs and Replac
7. ement All Countries Please read the warranty statement and check your battery before requesting repair During the warranty period any defective test tool can be returned to your Meterman Test Tools distributor for an exchange for the same or like product Please check the Where to Buy section on www metermantesttools com for a list of distributors near you Specifications General Specifications Display and Update Rate 3 3 4 digits 4000 counts Updates 3 per second nominal Operating Temperature 0 C 40 C Relative Humidity Maximum 80 R H up to 31 C decreasing linearly to 50 R H at 40 C Altitude Operating below 2000 m Storage Temperature 20 C 60 C lt 80 R H with battery removed Temperature Coefficient Nominal 0 15 x specified accuracy C 0 C 18 C or 28 C 40 C or otherwise specified Sensing Average sensing Overload Protection 600 V dc and V ac rms Low Battery Below approx 2 4 V Power Supply 3 V standard button battery x 1 IEC CR2032 ANSI NEDA 5004LC Power Consumption typical 2 mA APO Consumption typical 2 2 pA APO Timing Idle for 30 minutes Dimension Weight L 113 mm x W 53 mm x H 10 2 mm Approx 78 gm Special Features Data Hold and 30ms MAX Hold Agency Approvals CE A s Safety Meets IEC61010 1 UL61010B 1 CAN CSA C22 2 No 1010 1 92 CAT II 600 V and CAT III 300 V Pollution Degree 2 Class 2 E M C Meets EN61326 1997 1998 A1
8. ical storms current when the fuse blows in a circuit with open circuit voltage gt 600 V servicing CRT equipment e Remove test leads from circuit before opening the case Son Symbols Used in this Manual Battery AN Refer to the manual D Double insulated A Dangerous Voltage Direct Current Earth Ground Alternating Current m Audible tone C Complies with EU Underwriter Laboratories directives Inc Making Measurements All measurements described in this manual use the red test lead for positive polarity and the black test lead for ground reference unless otherwise specified Power On and Off Turn the rotary switch to turn the power ON or OFF Selecting Functions Select measurement as shown in the diagram on the back of the meter PRESS SELECT V Dcv 600V a V ACV 600V Q RESISTANCE 40 MQ mi CONTINUITY BEEPER gt DIODE TEST J CAPACITANCE Hz 5Hz 1MHz PRESS HOLD DISPLAY HOLD PRESS HOLD 1 SECOND 30ms MAX HOLD V dc and V ac Functions Rotate the rotary selector to the V position V dc is the default function The dc annunciator appears on the display Press the SELECT button momentarily to select V ac The ac annunciator appears on the display Resistance Continuity Diode and Capacitance Functions 1 2 3 Turn the rotary switch to the Q J
9. icons in the display In spite of its small size the PM51 is full safety rated to CAT III 300 V CAT II 600 V and is UL listed No other meter offers this size with such performance and high safety ratings Safety Information he PM51 Digital Multimeter is certified for cULus and EN61010 1 2001 CAT II 600 V CAT III 300 V class 2 and pollution deg 2 e This instrument is EN61010 1 certified for Installation Category II 600 V It may only be used to make measurements on energy limited Circuits within equipment and not directly connected to mains e This instrument is EN61010 1 certified for Installation Category III 300 V It is recommended for use with local level power distribution ppliances portable equipment etc where only smaller transient vervoltages may occur and not for primary supply lines overhead ines and cable systems e Do not exceed the maximum overload limits per function see specifications nor the limits marked on the instrument itself Never apply more than 600 V between the test lead and earth ground e Inspect the DMM test leads and accessories before every use Do not use any damaged part e Never ground yourself when taking measurements Do not touch exposed circuit elements or test probe tips e Do not operate the instrument in an explosive atmosphere e Exercise extreme caution when measuring voltage gt 20 V current gt 10 mA AC power line with inductive loads AC power line during electr
10. ischarge the capacitor using a 100 kW resistor Free at least one end of the capacitor from the circuit Connect the test probes across the capacitor Read the display Frequency Function Turn the rotary switch to the Hz position to select the frequency function This function is set only at the highest input sensitivity mainly for measuring small electronic signals below 20 V ac rms 1 2 Connect the test probes to the signal source Read the display Additional Features HOLD and 30 ms MAX HOLD Modes HOLD mode freezes the display for later viewing Press the HOLD button momentarily to activate or to exit the Hold feature MAX mode captures voltage signals that have durations as short as 30 ms milliseconds within a single range and has automatic up range capability his feature is available in V dc and V ac functions Press the HOLD button or 1 second or more to activate or exit MAX mode A AAWARNING Hazardous voltages present at test leads may not be displayed when in HOLD mode Auto ranging f the function selected has more than one range the meter will auto range o the best range and resolution Product Maintenance Maintenance Do not attempt to repair this meter It contains no user serviceable parts Repair or servicing should only be performed by qualified personnel Cleaning Periodically wipe the case with a damp cloth and mild detergent do not use abrasives or solvents If the meter is not to be used for
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