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i. Data Hold

Press the 

HOLD 

button at any time on any function

to freeze the reading on the LCD display.  This
function is very useful when measuring in locations
where the display is difficult to read.

j. Trim 

(Average sensing mode for ACV, ACA, OHM, Diode
and Continuity.)

Press the 

TRIM 

button when measuring unstable

signals to stabilize the reading. The 296 will aver-
age the measured value approximately every 1.25
seconds to obtain a clearer picture of the current
or voltage being measured.

k. Peak Mode

1.

Set the 296 to the 

ACA 

function.

2.

Push the 

RNG 

button and select the desired 

measurement range.

3.

Push the 

TRIM 

button until PEAK shows on LCD.

4.

Allow the LCD to stabilize to zero.

5.

Clamp the jaws around a single conductor to the
device to be measured.

6.

Apply power to the device under test.

7.

Read the PEAK current on the LCD immediately
after the test.

7

C. TECHNICAL DATA

1. Features and Benefits

Agency 

UL Listed to U.S. and Canadian Safety
Standards. Meets CE and IEC 1010.

True RMS

Needed to accurately measure non-sinu-
soidal AC voltage and current waveforms
found on many controls and circuits.

HDR Mode

Determines if a signal is clean or  distorted.
Displays the harmonic  distortion ratio on
ACV and ACA at line voltage and 60 Hz.

4000 Count

Improves the resolution on all functions 
and ranges.

Data Hold

Maintains the reading on the display for
hard to reads areas.

Peak Mode

Measure the inrush current of motors,
relays and solenoids.

Trim Mode

Averages the readings for more stable out-
put on LCD.

Record Mode

Records Min/Max and Average value of the
function being measured.

Sleep Mode

Automatically powers down after 10 
minutes of inactivity.

Frequency

Measures the frequency of the current
being measured.

Dual Display

When measuring frequency, the bar graph
indicates the current level.

Bar Graph

Shows rapidly changing input signals 
that the normal display will not.

Summary of Contents for Amp Plus

Page 1: ...0A 0 1A 700A 1A OHM 400Ω 0 1Ω 4kΩ 0 001kΩ 40kΩ 0 01kΩ Frequency 1KHz 0 1Hz 10KHz 0 001KHz Continuity Test Voltage Threshold 3V 100Ω 100 digits Diode Test Test Voltage Max Test Current 3V Approx 2 5mA 296 SPECIFICATIONS 0 75 Basic DCV Accuracy Test Products International Inc 296 Digital Clamp on Meter Amp Plus Instruction Manual ...

Page 2: ... Fax 503 520 1225 tpiusa msn com Test Products International plc 2 Newcourt Business Park Perry Road Harlow Essex CM18 7PR England Tel 01279 439647 Fax 01279 450553 L296M 12 1 97 copyright 1997 Test Products International Inc WARRANTY Please refer to product warranty card for warranty statement ...

Page 3: ...eclaration of Conformity 4 B SAFETY CONSIDERATIONS 5 C TECHNICAL DATA 1 Features and Benefits 7 2 Product Applications 8 3 Specifications 9 D MEASUREMENT TECHNIQUES 1 Controls and Functions 13 2 Step by Step Procedures 16 E ACCESSORIES 30 F MAINTENANCE 31 G TROUBLE SHOOTING GUIDE 32 ...

Page 4: ...t It is backed by a 3 year limited warranty Please remember to complete and return your product warranty registration card 2 Product Description The 296 is a clamp on plus DMM with True RMS and Harmonics capabilities The 296 offers measurements in all basic electrical functions plus True RMS Provides accurate and dependable readings of non linear loads HDR Mode Determines if a signal is clean or d...

Page 5: ...lication of the following standards EN 50081 1 1992 Emissions Standard EN 50082 1 1992 Immunity Standard EN 61010 1 1993 Safety Standard EN 61010 2 031 1995 Safety Standard EN 61010 2 032 1995 Safety Standard To ensure conformity with these standard this instru ment must be operated in accordance with the instruc tions and specifications given in this manual CAUTION Even though this instrument com...

Page 6: ... is obtained GENERAL GUIDELINES ALWAYS Test the 296 before using it to make sure it is operating properly Inspect the test leads before using to make sure there are no breaks or shorts Double check all connections before testing Have someone check on you periodically if working alone Have a complete understanding of the circuit being measured Disconnect power to circuit then connect test leads to ...

Page 7: ...Release the HOLD button 4 Check the LCD to see if the HOLD function is activated If H is on the display push the HOLD button to deactivate the DATA HOLD mode 5 Sleep mode is now deactivated 6 INTERNATIONAL SYMBOLS CAUTION RISK OF ELECTRIC SHOCK AC ALTERNATION CURRENT DC DIRECT CURRENT REFER TO INSTRUCTION MANUAL GROUND DOUBLE INSULATION EITHER DC OR AC ...

Page 8: ...ediately after the test 7 C TECHNICAL DATA 1 Features and Benefits Agency UL Listed to U S and Canadian Safety Standards Meets CE and IEC 1010 True RMS Needed to accurately measure non sinu soidal AC voltage and current waveforms found on many controls and circuits HDR Mode Determines if a signal is clean or distorted Displays the harmonic distortion ratio on ACV and ACA at line voltage and 60 Hz ...

Page 9: ...instrument 8 2 Product Applications Perform the following tests and or measurements with the 296 and the appropriate function HVAC R ACA Heat anticipator current in thermostats ACV Line voltage ACV or DCV Control circuit voltage OHMS Heating element resistance continuity OHMS Compressor winding resistance OHMS Contactor and relay coil resistance ACA Motor and compressor start up current OHMS Conti...

Page 10: ...hould be between 0 5 and 0 8 volts 7 Reverse test lead connections in 5 above 8 Reading on the display should be OFL Overload NOTE If diode reads 0 in both directions diode is shorted If diode reads OFL in both directions diode is open 9 3 Specifications IEC 1010 Over Voltage CAT II 1000VDC 600VAC CAT III 600V Pollution Degree 2 INSTALLATIONⅠ Ⅱ Ⅲ INSTALLATION CATEGORY OVERVOLTAGE CATEGORY Ⅰ Signal...

Page 11: ... on the LCD 6 Connect test leads to circuit to be measured 7 Listen for the buzzer to confirm continuity Optional Modes HOLD Freezes the reading on the LCD TRIM Push TRIM button to stabalize reading 10 3 Specifications cont a DCV Range Resolution Accuracy Impedance 40V 0 01V 0 75 of reading 10MΩ 400V 0 1V 3 digits 600V 1V b1 ACV 45Hz to 60Hz Range Resolution Accuracy Impedance 40V 0 01V 1 0 of rea...

Page 12: ...d the resistance value on the 296 Optional Modes HOLD Freezes the reading on the LCD RANGE Manually ranges the instrument TRIM Push TRIM button to stabalize reading REC Record minimum maximum and average values 11 3 Specifications cont c ACA Range Res Accuracy Freq Response 40A 0 01A 2 of reading 20 digits 45Hz to 60Hz 4 of reading 20 digits 30Hz to 45Hz 4 of reading 20 digits 60Hz to 1KHz 400A 0 ...

Page 13: ...hms is displayed the winding is shorted to the motor frame ground 12 g Diode Test Test Voltage Max Test Current Over Load Protection 3V Approx 2 5mA 600 V DC or Peak AC h Frequency Range Res Accuracy Overload Protection 1KHz 0 1Hz 0 2 of reading 600V DC or 10KHz 0 001KHz 3 digits AC Peak h General Specifications Max Volt between 600V any Input and Ground Display Type 4 000 Count 4 times per second...

Page 14: ...eter This is the running current of the motor Disconnect power to the motor and put the meter in PEAK HOLD mode Reconnect the power and read the current displayed on the meter This is the in rush or start up current of the motor 13 D MEASUREMENT TECHNIQUES 1 Controls and Functions Push Buttons TRIM Activates TRIM PEAK and HDR functions Except on Frequency Range FUNC Toggles between AC and DC volts...

Page 15: ...rrent on the 296 Optional Modes TRIM Push TRIM button to stabilize reading HOLD Freezes the reading on the LCD RANGE Manually ranges the instrument PEAK Measures the peak amperage HDR Check the harmonic distortion ratio REC Record minimum maximum and average values 14 1 Controls and Functions cont Rotary Switch OFF Turns the 296 completely off V Used to measure AC and DC volts Ω Used to measure re...

Page 16: ...t of the motor Disconnect power to the motor and put the meter in PEAK HOLD mode Reconnect the power and read the current displayed on the meter This is the in rush or start up current of the motor 15 Application Notes When measuring DC Voltage of a bat tery the most accurate reading can be attained by testing the battery under load To accomplish this follow steps 1 through 4 shown on page 15 and ...

Page 17: ... the LCD RANGE Manually ranges the instrument REC Record minimum maximum and average values TRIM Push TRIM button to stabilize reading 16 2 Step by Step Procedures a Measuring DC Volts WARNING Do not attempt to make a voltage measurement of more than 600V or of a voltage level that is unknown Instrument set up FUNC BLACK RED MIN MAXI TEST LEAD TEST LEAD READING READING V COM V Ω 0 01V 600V Measure...

Page 18: ...ng on the LCD RANGE Manually ranges the instrument PEAK Measures the peak voltage REC Record minimum maximum and average values HDR Check harmonic distortin ratio 17 Application Notes Disconnect power from the terminal block find the fuse or circuit breaker that controls the block and turn it off Set up the meter following the steps under Measurement Procedure on page 17 Then proceed with the foll...

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