TPI 291 Скачать руководство пользователя страница 23

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F. MAINTENANCE

1. Battery Replacement:

The 291 will display a bat-

tery symbol when the internal 9 Volt battery needs
replacement. The battery is replaced as follows:

Disconnect and remove all test leads
from live circuits and from the 291.

Loosen the screw from the back of the
291 battery cover.

Remove the battery compartment cover.

Remove old battery and replace with new
battery, observing the correct polarity.

Reassemble the instrument in reverse
order from above.

2. Cleaning your 291:

Use a mild detergent and slightly damp cloth to
clean the surfaces of the 291.

G. TROUBLE SHOOTING GUIDE

Problem

Probable Causes

Does not power up

•

Dead or defective battery

•

Broken wire from battery
snap to PCB

Won’t display current readings

•

Open fuse

• Open test lead
•

Improperly connected to
circuit under test

All functions except ohms read high

•

Very weak battery that will
not turn on the low battery
indicator on the LCD

AC Volts do not read

•

Very weak battery that will
not turn on the low battery
indicator on the LCD

WARRANTY

Please refer to product warranty card for
warranty statement.

Содержание 291

Страница 1: ...291 Digital Clamp on Meter Amp Plus Instruction Manual ...

Страница 2: ...ar graph indicates current level Peak Mode For start up and inrush currents Sleep Mode Preserves battery life Data Hold Holds the reading on the display for easy viewing The 291 comes complete with the following accessories Carrying Pouch Test Lead Set Instruction Manual Battery TABLE OF CONTENTS A INTRODUCTION 1 Congratulations 3 2 Product Description 3 3 Declaration of Conformity 4 B SAFETY CONS...

Страница 3: ...ar graph indicates current level Peak Mode For start up and inrush currents Sleep Mode Preserves battery life Data Hold Holds the reading on the display for easy viewing The 291 comes complete with the following accessories Carrying Pouch Test Lead Set Instruction Manual Battery TABLE OF CONTENTS A INTRODUCTION 1 Congratulations 3 2 Product Description 3 3 Declaration of Conformity 4 B SAFETY CONS...

Страница 4: ...ctive 89 336 EEC in the approximation of laws of the member states relating to Electromagnetic compatibility and 73 23 EEC The Low Voltage Directive by application 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 stan...

Страница 5: ...ctive 89 336 EEC in the approximation of laws of the member states relating to Electromagnetic compatibility and 73 23 EEC The Low Voltage Directive by application 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 stan...

Страница 6: ...t Applications Perform the following tests and or measurements with the 291 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 Continuity of wiring ALL B...

Страница 7: ...t Applications Perform the following tests and or measurements with the 291 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 Continuity of wiring ALL B...

Страница 8: ...o 80 0 35 C 32 95 F 0 to 70 35 50 C 95 122 F Power Supply 9 Volt Battery Battery Life 80 hrs Alkaline Size H x L x W 40mm x 190mm x 65mm 1 5in x 7 25in x 2 5in Weight 315g 11 1oz 3 Specifications IEC 1010 Over Voltage CAT II 1000V CAT III 600V Pollution Degree 2 a DCV Range Resolution Accuracy Impedance 40V 0 01V 0 75 of reading 10MΩ 400V 0 1V 3 digits 600V 1V b ACV Range Resolution Accuracy Imped...

Страница 9: ...o 80 0 35 C 32 95 F 0 to 70 35 50 C 95 122 F Power Supply 9 Volt Battery Battery Life 80 hrs Alkaline Size H x L x W 40mm x 190mm x 65mm 1 5in x 7 25in x 2 5in Weight 315g 11 1oz 3 Specifications IEC 1010 Over Voltage CAT II 1000V CAT III 600V Pollution Degree 2 a DCV Range Resolution Accuracy Impedance 40V 0 01V 0 75 of reading 10MΩ 400V 0 1V 3 digits 600V 1V b ACV Range Resolution Accuracy Imped...

Страница 10: ...r and Diode Test functions D MEASUREMENT TECHNIQUES 1 Controls and Functions Push Buttons PEAK Activates the Peak Hold function ACA only HOLD Holds the reading on the display until the button is pushed a second time Rotary Switch OFF Turns the 291 completely off V Used to measure DC volts V Used to measure AC volts Ω Ω Used to measure resistance and use the continuity buzzer A Used to measure AC a...

Страница 11: ...r and Diode Test functions D MEASUREMENT TECHNIQUES 1 Controls and Functions Push Buttons PEAK Activates the Peak Hold function ACA only HOLD Holds the reading on the display until the button is pushed a second time Rotary Switch OFF Turns the 291 completely off V Used to measure DC volts V Used to measure AC volts Ω Ω Used to measure resistance and use the continuity buzzer A Used to measure AC a...

Страница 12: ...onnect test leads to circuit to be measured 6 Reconnect power to circuit to be measured 7 Read the voltage on the 291 Optional Modes HOLD Freezes the reading on the LCD PEAK Measures the peak voltage 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 13 and t...

Страница 13: ...onnect test leads to circuit to be measured 6 Reconnect power to circuit to be measured 7 Read the voltage on the 291 Optional Modes HOLD Freezes the reading on the LCD PEAK Measures the peak voltage 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 13 and t...

Страница 14: ...es HOLD Freezes the reading on the LCD PEAK Measures the peak voltage 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 15 Then proceed with the following Connect the red test lead to the hot side of the block and the black lead to the neutral s...

Страница 15: ...es HOLD Freezes the reading on the LCD PEAK Measures the peak voltage 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 15 Then proceed with the following Connect the red test lead to the hot side of the block and the black lead to the neutral s...

Страница 16: ...ower and read the current displayed on the meter This is the in rush or start up current of the motor c Measuring AC Amps CAUTION Do not attempt to make a current measurement with the test leads The 291 measures the current by clamping the jaw around one conductor wire Clamping around more than one wire will result in erroneous readings Instrument set up FUNC BLACK RED MIN MAX TEST LEAD TEST LEAD ...

Страница 17: ...ower and read the current displayed on the meter This is the in rush or start up current of the motor c Measuring AC Amps CAUTION Do not attempt to make a current measurement with the test leads The 291 measures the current by clamping the jaw around one conductor wire Clamping around more than one wire will result in erroneous readings Instrument set up FUNC BLACK RED MIN MAX TEST LEAD TEST LEAD ...

Страница 18: ...ut jack 4 Set the rotary switch to the 400 Ω function 5 Connect test leads to circuit to be measured 6 Read the resistance value on the 291 Optional Modes HOLD Freezes the reading on the LCD Application Notes Resistance When measuring resistance of a motor make sure the power is disconnected prior to testing Set up meter following steps under Measurement Procedure on page 19 and proceed with the f...

Страница 19: ...ut jack 4 Set the rotary switch to the 400 Ω function 5 Connect test leads to circuit to be measured 6 Read the resistance value on the 291 Optional Modes HOLD Freezes the reading on the LCD Application Notes Resistance When measuring resistance of a motor make sure the power is disconnected prior to testing Set up meter following steps under Measurement Procedure on page 19 and proceed with the f...

Страница 20: ... test lead into the COM input jack 3 Plug red test lead into V Ω input jack 4 Set the rotary switch to the Ω function 5 Connect test leads to circuit to be measured 6 Listen for the buzzer to confirm continuity Optional Modes HOLD Freezes the reading on the LCD f 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 m...

Страница 21: ... test lead into the COM input jack 3 Plug red test lead into V Ω input jack 4 Set the rotary switch to the Ω function 5 Connect test leads to circuit to be measured 6 Listen for the buzzer to confirm continuity Optional Modes HOLD Freezes the reading on the LCD f 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 m...

Страница 22: ...rument in reverse order from above 2 Cleaning your 291 Use a mild detergent and slightly damp cloth to clean the surfaces of the 291 G TROUBLE SHOOTING GUIDE Problem Probable Causes Does not power up Dead or defective battery Broken wire from battery snap to PCB Won t display current readings Open fuse Open test lead Improperly connected to circuit under test All functions except ohms read high Ve...

Страница 23: ...rument in reverse order from above 2 Cleaning your 291 Use a mild detergent and slightly damp cloth to clean the surfaces of the 291 G TROUBLE SHOOTING GUIDE Problem Probable Causes Does not power up Dead or defective battery Broken wire from battery snap to PCB Won t display current readings Open fuse Open test lead Improperly connected to circuit under test All functions except ohms read high Ve...

Страница 24: ...IFICATIONS 0 75 Basic DCV Accuracy also see pages 8 9 Test Products International Inc 9615 SW Allen Blvd Ste 104 Beaverton OR USA 97005 503 520 9197 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 L291M 12 1 97 copyright 1997 Test Products International Inc ...

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