MOOSHIMETER USER'S MANUAL
Contents
1. TWO CHANNEL MEASUREMENTS Your Mooshimeter is capable of reading any two of its three channels simultaneously NOTE Measurements using the internal current shunt will experience a degree of cross talk due to the impedence of the Common lead Other measurement types will also experience this cross talk but it should be negligible MEASURING SMALL RESISTANCES CALIBRATING A CURRENT SHUNT The Mooshimeter can be used to measure small resistances in a live circuit The meter simultaneously measures the current and the corresponding voltage with the precision voltage channel Q and then finds the slope to calculate resistance This can be done with either the internal current shunt or an external current clamp Using a current clamp allows the measurement to be done without breaking the circuit and allows for test currents above 10 Amps Wire the meter in as shown and enable the measurement mode Apply a test current and run the analysis The analysis works best with several points along the curve Therefore the optimal test current has a large magnitude and a strong time varying component below 1kHz Often this test current can be the current already present within the system due to normal operation For example an AC system s steady state or a DC systems startup transient may provide sufficient data FIGURE 7 CURRENT CLAMP AND CURRENT SHUNT COMPARISON POWER FACTOR Power factor compares apparently power and actual power and2. is ameasure of how effectively a load uses available power This measurement requires voltage and current measurements Current measurement can be done with either internal or external current shunt mode Power Factor is a unitless measure so the gain accuracy of the measurements does not affect the measurement accuracy Therefore the existing wiring can be used as an external current shunt without calibration MAINTANENCE OPENING THE MOOSHIMETER WARNING To avoid electric shock disconnect test leads from the meter before opening the meter 1 Disconnect all test leads 2 Unscrew both retaining screws from the bottom of the case with a Phillips head screwdriver 3 Separate the two halves 4 Taking special care not to bend the circuit board grasp the circuit board as shown near the connectors and pull it out of the top half of the enclosure 5 Your Mooshimeter is now fully disassembled The batteries fuse and reset button are now accessible CLOSING THE MOOSHIMETER WARNING Risk of electrical shock Do not operate the meter while partially disassembled 1 Place the PCB in the bottom enclosure half Use the J shaped fin for alignment with the corresponding cut out in the PCB 2 Close the two halves together 3 Replace both screws Tighten firmly BATTERY REPLACEMENT 1 Open the Mooshimeter per directions above Remove old batteries 3 Observe the battery polarity indication on the
3. a current This may indicate either a poor connection or a blown fuse NOTE AC current range is limited by the instantaneous current Peaks above the listed limits will result in incorrect readings Derate AC current limits with high crest factors accordingly Disconnect power from the circuit to be measured Break the circuit and wire the meter in series through the A and C terminals Positive DC current flows into the A terminal MEASURING CURRENT WITH AN EXTERNAL CURRENT SHUNT WARNING This measurement mode is capable of measuring currents many orders of magnitude larger than is typically possible with a handheld meter Exercise caution while interfacing to high ampacity circuits NOTE The accuracy of this measurement mode depends on the accuracy of the external current shunt used Account for this accuracy dependency in your measurements The terminal can measure small voltages with a resolution of as fine as 25nV per count and a noise floor as low as 1uV This can be used to with external current shunts to measure currents over a very wide dynamic range See the ratings section to guide shunt size selection It is possible to use the existing wiring for the current shunt and in doing so take rough current measurements without breaking the circuit With very low voltages it is recommended to minimize the loop area of the measurement probes by either twisting them FIGURE 3 EXTERNAL CURRENT SHUNT t
4. 5011 2009 A1 2010 Class A Radiated Emissions EN 61326 1 2013 ETSI EN 301 489 1 V1 9 2 EN 301 489 17 V2 2 1 Immunity Testing Voltage Terminal V Current Terminal A DC Range AC Range Resolution Noise Floor Accuracy counts 200 V 140 V 35 uV 1090uV 0 5 20 2 75 A 0 5 pA ISpA 0 5 50 135 V 25 uV 730uV 0 5 20 175A 125A O4pA 10 pA 0 5 50 20 uV 610uV__ 0 5 20 counts 500 mQ 200 DC Range AC Range Resolution Noise Floor Accuracy counts 670mV 475mV 150nV 0 5 20 500mv 350mvV 100nV 0 5 20 400 mV _ 275 mv 0 5 20 280mv 200 mv 0 5 20 220mv 150 mv 0 5 20 150mv 100mv 0 5 20 Voltage Auxiliary Terminal Surge Protection Input Impedance DC Range AC Range Resolution Noise Floor Accuracy count 1000 mv 700mv 300nV 10 pV 0 5 20 680mv 475mv 150nVv 0 5 20 510mV 350mV 100nV 0 5 20 La 800V gt 100MQ lt 200pF _ Burden Vottage A 10kA 600V lt 20uV mA Diode Voltage Drop RADIO NOTICES FCC Notice for U S Customers This device complies with part 15 of the FCC Rules Operation is subject to the following conditions 1 This device many not cause harmful interference and 2 This device must accept any interference received Including interference that may cause undesired operation Changes and Modifications not expressly approved by Mooshim Engineering LLC can void your authority to operate this equipment und
5. Always remove leads before opening the case Do not operate the meter unless it is fully assembled with both case screws tight Only use appropriately rated fuses Always check for damage before use Pay special attention to the test leads for signs of damaged insulation or exposed conductors Immediately replace damaged leads Only use test leads that are rated to at least CAT III 600V Keep fingers behind the guards on the leads Use caution working with voltages above 30VAC rms 42VAC peak or 60VDC Voltages this high pose risk of shock Never apply more than 600V between any terminal and earth ground Do not apply more than 2 0V to the auxiliary terminal with respect to Common Doing so may draw unexpected current and trigger protection circuits In this event basic functionality will automatically return within one minute Accuracy may be adversely affected for up to five minutes Error messages may appear on the user interface Read these messages for further information TABLE 1 SYMBOLS TK Caution Risk of Electric Shock Refer to operating instructions ol Double Insulation N Important Information Refer to operating instructions CAT II This instrument is rated for installation category III per IEC 61010 ES Terminal protected by fuse Current limit of 10A RMS Conforms to European Union Directives Do not exceed 600V with respect to ground TABLE 2 TERMINALS Terminal Description Common terminal for al
6. Mooshim Engineering LLC 2565 3rd St Suite 315 San Francisco CA 94107 August 2014 Rev 1 2014 Mooshim Engineering All Rights Reserved INTRODUCTION The Mooshim Mooshimeter BLE DMM 2X 01A hereafter The Meter is a battery powered multimeter capable of handheld and remote usage via Bluetooth Low Energy This manual details how to safely use your Mooshimeter The Meter meets CAT III IEC 61010 1 3r edition and 61010 2 030 standards Overvoltage category III CAT III defines a level of safety appropriate for the transient overvoltages present in fixed equipment installations at the distribution level This includes the mains installation of a building distribution boards busbars and permanently connected equipment Do not use this multimeter for CAT IV circuits which includes any mains circuits not protected by a building s breakers PACKAGE CONTENTS e Mooshimeter 1 o 1 5V AA Alkaline Batteries installed 2 o 12A HRC fuse installed 1 e Test Leads 3 e Alligator Clip Attachment 3 e Carrying case 1 SAFETY INFORMATION WARNING Denotes a potentially hazardous situation that may result in injury or death CAUTION Denotes a potentially hazardous situation that may result in damage to the meter NOTE Denotes a situation that may result in degraded or incorrect measurement Use caution in the operation of this device Improper use may result in injury or death Read this user manual before operating the meter
7. circuit board Insert 2 new AA 1 5V batteries as shown on the circuit board 4 Ifyou have inserted the batteries with the correct polarity the Mooshimeter s LED will blink slowly several times before turning off If the light does not blink check the battery polarity 5 Close the Mooshimeter per directions above P CLEANING Gently wipe the assembled meter with a damp cloth Do not touch or apply cleaning agents to the circuit board Do not use any solvents or other cleaning agents while cleaning your Mooshimeter The outer housing is a polycarbonate based material and may be damaged by incompatible cleaners FUSE REPLACEMENT FUSE TEST WARNING Only use appropriately rated replacement fuse WARNING Always perform a Fuse Test before using the internal current shunt measurement mode 1 Open the Mooshimeter per directions above 2 Gently remove existing fuse from holder 1 Perform a resistance measurement with the C and Q 3 Replace fuse only with appropriately rated replacement terminals connected 4 Recommended model 2 Ifthe resistance measured is greater than 0 50 replace the fuse Reomax 632 300 12 available from Mooshim Engineering The resistance mode on the Mooshimeter is not accurate below Size 3AG 12A hold 600V 10kA minimum interrupt 1Q The actual resistance of the fuse should be 20mQ 5 Close the Mooshimeter per directions above FIGURE 8 FUSE TEST REPLACING THE SD CARD WARNING To avoid electric shoc
8. er Federal Communications Commissions rules This device complies with Industry Canada license exempt RSS standard s Operation is subject to the following two conditions 1 this device may not cause interference and 2 this device must accept any interference including interference that may cause undesired operation of the device Le pr sent appareil est conforme aux CNR d Industrie Canada applicables aux appareils radio exempts de licence L exploitation est autoris e aux deux conditions suivantes 1 l appareil ne doit pas produire de brouillage et 2 l utilisateur de l appareil doit accepter tout brouillage radio lectrique subi m me si le brouillage est susceptible d en compromettre le fonctionnement
9. k disconnect all leads from the meter NOTE Only use FAT32 formatted SD cards up to 32 gigabytes Larger SD cards or cards formatted differently cannot be written to Open the Mooshimeter per the directions above Press the SD card further into the slot until you feel a Click Release The SD card will eject Remove old SD card and insert new SD card Push card in with finger until you feel a click Close the Mooshimeter per the directions above A T oE E a RESETTING THE MOOSHIMETER WARNING To avoid electric shock disconnect all leads from the meter 1 Open the Mooshimeter per the directions above 2 Press and Hold the button shown for 5 seconds 3 Close the Mooshimeter per the directions above GENERAL SPECIFICATIONS Accuracy is specified for 1 year after calibration within 18 to 28C Accuracies listed are for single channel measurements only Multi channel measurements may degrade accuracy For extended specifications visit moosh im eter specs All AC ranges are RMS assuming a pure sinusoid crest factor V2 Derate ranges linearly with increasing crest factor terminal and earth ground 12A Reomax 632 300 12 50 hours typical continuous active use Safety Compliance EN61010 1 2010 Measurement Category III 600V EN61010 2 030 Pollution Degree RF Communications 2 4 GHz ISM Band Bluetooth Low Energy Electromagnetic compatibility FCC Part 15 247 Subpart C ETSI EN 300 328 V1 7 1 EN 61326 1 2013 per EN 5
10. l measurements Input terminal for measuring currents to 10A RMS AC and DC Input terminal for measuring voltages to 600V RMS AC and DC cE Q Input terminal for measuring resistance diode drop and voltages up to 1 2V BASIC MEASUREMENT INSTRUCTIONS MEASURING VOLTAGE WARNING Risk of Electrocution For determining whether a circuit is live exercise caution if the meter does not report a voltage This may indicate a poor connection to the circuit being tested Make sure the probe tips are fully in contact with the circuit before assuming the circuit is safe Two of the Mooshimeter s input terminals are capable of making basic voltage measurements The V terminal can measure up to 600V RMS and is intended for traditional AC and DC voltage measurements The Q terminal can measure up to 1V peak 0 7V RMS for pure sine AC and allows for several new measurement techniques described later in this manual See the ratings section for further details on the measurement ranges FIGURE 1 BASIC VOLTAGE MEASUREMENT MEASURING CURRENT WITH INTERNAL CURRENT SHUNT WARNING Exercise care when connecting in series with a circuit especially those containing motor s Sudden disconnects may create higher than expected voltages due to inductive kick WARNING Perform a Fuse Check before measuring currents with the internal current shunt Exercise caution in determining whether a circuit is live if the meter does not report
11. ogether or using a BNC adaptor MEASURING RESISTANCE NOTE Do not measure resistance ona live circuit Doing so will result in incorrect readings and may engage the internal protection circuitry Should this occur wait 5 minutes before taking further measurements Resistance is measured between the Q and C terminals Polarization is not important The meter uses a 100nA test current in its MQ ranges and a 100uA test current in its KQ ranges FIGURE 4 RESISTANCE MEASUREMENT DIODE TESTING NOTE Do not use the diode test functionality while connected to a live circuit Doing so will result in incorrect readings and may engage the internal protection circuitry Should this occur wait 5 minutes before taking further measurements To test diodes or other silicon junction devices a test current is pushed through the device under test and the resulting voltage is measured Positive test current flows out of the Q terminal and into the C terminal The test current is 100A FIGURE 5 DIODE MEASUREMENT USING A BNC ADAPTER The 4 terminals are arranged with 0 75 spacing to allow for use of a standard BNC adapter Measurements using the A or Q terminals can be used with the C terminal as usual To use a BNC adapter with the V input use the A terminal as the common input The A and C terminals are internally connected with a low impedance lt 20mOhms FIGURE 6 BNC ADAPTORS FOR V A INPUTS
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