270 Digital Clamp-on Meter Instruction Manual
TABLE OF CONTENTS A. INTRODUCTION A. INTRODUCTION 1. Congratulations ..........................3 2. Product Description ....................3 3. Declaration of Conformity ..........4 1. Congratulations!! B. SAFETY CONSIDERATIONS ..............5 2. Product Description Thank you for purchasing TPI products. The 270 is easy to use and is built to last. It is backed by a 3 year limited warranty. Please remember to complete and return your product warranty registration card. C. TECHNICAL DATA 1.
TABLE OF CONTENTS A. INTRODUCTION A. INTRODUCTION 1. Congratulations ..........................3 2. Product Description ....................3 3. Declaration of Conformity ..........4 1. Congratulations!! B. SAFETY CONSIDERATIONS ..............5 2. Product Description Thank you for purchasing TPI products. The 270 is easy to use and is built to last. It is backed by a 3 year limited warranty. Please remember to complete and return your product warranty registration card. C. TECHNICAL DATA 1.
3. EC Declaration of Conformity This is to certify that TPI Model 270 conforms to the protection requirements of the council directive 89/336/EEC, in the approximation of laws of the member states relating to Electromagnetic compatibility and 73/23/EEC.
3. EC Declaration of Conformity This is to certify that TPI Model 270 conforms to the protection requirements of the council directive 89/336/EEC, in the approximation of laws of the member states relating to Electromagnetic compatibility and 73/23/EEC.
INTERNATIONAL SYMBOLS CAUTION: RISK OF ELECTRIC SHOCK AC (Alternation Current) DC (Direct Current) REFER TO INSTRUCTION MANUAL GROUND DOUBLE INSULATION EITHER DC OR AC C. TECHNICAL DATA 1. Features and Benefits Agency Meets CE and IEC 1010. Analog Bar Displays rapidly changing input Graph signals. NCV Non-contact voltage detection. Detect the presence of voltage without contacting the circuit. P-H MAX/MIN Captures min / max peak. Records Min/Max readings for all functions and ranges.
INTERNATIONAL SYMBOLS CAUTION: RISK OF ELECTRIC SHOCK AC (Alternation Current) DC (Direct Current) REFER TO INSTRUCTION MANUAL GROUND DOUBLE INSULATION EITHER DC OR AC C. TECHNICAL DATA 1. Features and Benefits Agency Meets CE and IEC 1010. Analog Bar Displays rapidly changing input Graph signals. NCV Non-contact voltage detection. Detect the presence of voltage without contacting the circuit. P-H MAX/MIN Captures min / max peak. Records Min/Max readings for all functions and ranges.
3. Specifications DC Microamps IEC 1010 Over Voltage: Range Res. Accuracy CAT II - 1000V 40uA 0.01mA +/-(0.8% of reading + 2 digits) CAT III - 600V 400uA 0.1mA UL 3111 Pending Overload Protection: 0.5A / 600V Fuse Pollution Degree 2 Temperature for gauranteed accuracy: 23ºC +5ºC *DC microamps are measured with the test leads in series with the circuit under test. DC VOLTS OHM (Resistance, W) Range Res. 400mV 0.1mV 4V 0.001V 40V 0.01V Overload Protection: 400V 0.
3. Specifications DC Microamps IEC 1010 Over Voltage: Range Res. Accuracy CAT II - 1000V 40uA 0.01mA +/-(0.8% of reading + 2 digits) CAT III - 600V 400uA 0.1mA UL 3111 Pending Overload Protection: 0.5A / 600V Fuse Pollution Degree 2 Temperature for gauranteed accuracy: 23ºC +5ºC *DC microamps are measured with the test leads in series with the circuit under test. DC VOLTS OHM (Resistance, W) Range Res. 400mV 0.1mV 4V 0.001V 40V 0.01V Overload Protection: 400V 0.
Capacitance Diode Test Test Current Over Load Protection Range Res. Accuracy 1.5mA MAX 250 V DC or AC RMS 4nF 40nF 400nF 4mF 40mF 400mF 4mF 40mF 0.001nF 0.01nF 0.1nF 0.001mF 0.01mF 0.1uF 0.001mF 0.
Capacitance Diode Test Test Current Over Load Protection Range Res. Accuracy 1.5mA MAX 250 V DC or AC RMS 4nF 40nF 400nF 4mF 40mF 400mF 4mF 40mF 0.001nF 0.01nF 0.1nF 0.001mF 0.01mF 0.1uF 0.001mF 0.
D. MEASUREMENT TECHNIQUES 1. Controls and Functions: Push Buttons REL D-H 12 Activates Relative mode. Press and hold for 2 seconds to deactivate. 1. Controls and Functions: (cont.) Rotary Switch OFF Turns the 270 completely off. V Used to measure DC volts. V Used to measure AC volts. W Used to measure resistance. Used to measure continuity. Holds the reading on the display until the button is pushed a second time. R-H Activates manual ranging.
D. MEASUREMENT TECHNIQUES 1. Controls and Functions: Push Buttons REL D-H 12 Activates Relative mode. Press and hold for 2 seconds to deactivate. 1. Controls and Functions: (cont.) Rotary Switch OFF Turns the 270 completely off. V Used to measure DC volts. V Used to measure AC volts. W Used to measure resistance. Used to measure continuity. Holds the reading on the display until the button is pushed a second time. R-H Activates manual ranging.
Measuring AC Voltage 2. Step by Step Procedures: WARNING! Measuring DC Voltage Do not attempt to make a voltage measurement of more than 600V or of a voltage level that is unknown. Make sure the temperature probe is NOT plugged in during this test. WARNING! Do not attempt to make a voltage measurement of more than 600V or of a voltage level that is unknown. Make sure the temperature probe is NOT plugged in during this test. FUNC. Instrument set-up: FUNC.
Measuring AC Voltage 2. Step by Step Procedures: WARNING! Measuring DC Voltage Do not attempt to make a voltage measurement of more than 600V or of a voltage level that is unknown. Make sure the temperature probe is NOT plugged in during this test. WARNING! Do not attempt to make a voltage measurement of more than 600V or of a voltage level that is unknown. Make sure the temperature probe is NOT plugged in during this test. FUNC. Instrument set-up: FUNC.
Measuring AC Amperage Measuring Resistance WARNING! Do not attempt to make resistance measurements with circuit energized. For best results, remove the resistor completely from circuit before attempting to measure it. Make sure the temperature probe is NOT plugged in during this test. NOTE: To make accurate low ohm measurements, short the ends of the test leads together and press the REL button to store the reading.
Measuring AC Amperage Measuring Resistance WARNING! Do not attempt to make resistance measurements with circuit energized. For best results, remove the resistor completely from circuit before attempting to measure it. Make sure the temperature probe is NOT plugged in during this test. NOTE: To make accurate low ohm measurements, short the ends of the test leads together and press the REL button to store the reading.
Measuring Diodes Measuring Continuity WARNING! WARNING! Do not attempt to make continuity measurements with circuit energized. Make sure the temperature probe is NOT plugged in during this test. Do not attempt to make diode measurements with the circuit energized. For accurate tests, remove the diode completely from the circuit prior to measuring it. Make sure the temperature probe is NOT plugged in during this test. Instrument set-up: Instrument set-up: FUNC.
Measuring Diodes Measuring Continuity WARNING! WARNING! Do not attempt to make continuity measurements with circuit energized. Make sure the temperature probe is NOT plugged in during this test. Do not attempt to make diode measurements with the circuit energized. For accurate tests, remove the diode completely from the circuit prior to measuring it. Make sure the temperature probe is NOT plugged in during this test. Instrument set-up: Instrument set-up: FUNC.
Measuring Capacitance Measuring Frequency WARNING! WARNING! All capacitance measurements are to be made on de-energized circuits with all capacitors discharged only. Failure to de-energize and discharge capacitors prior to measuring them could result in instrument damage and/or personal injury. Make sure the temperature probe is NOT plugged in during this test. Never attempt a frequency measurement with a voltage source greater than 500V.
Measuring Capacitance Measuring Frequency WARNING! WARNING! All capacitance measurements are to be made on de-energized circuits with all capacitors discharged only. Failure to de-energize and discharge capacitors prior to measuring them could result in instrument damage and/or personal injury. Make sure the temperature probe is NOT plugged in during this test. Never attempt a frequency measurement with a voltage source greater than 500V.
Measuring DC Microamps Measuring Temperature CAUTION! CAUTION! Do not attempt to make a current measurement with the test leads connected in parallel with the circuit to be tested. Test leads must be connected in series with the circuit. Do not attempt to make a current measurement of circuits with more than 600V present. Instrument damage and/or personal injury may result. Make sure the temperature probe is NOT plugged in during this test. Instrument set-up: FUNC. BLACK TEST LEAD COM 400.
Measuring DC Microamps Measuring Temperature CAUTION! CAUTION! Do not attempt to make a current measurement with the test leads connected in parallel with the circuit to be tested. Test leads must be connected in series with the circuit. Do not attempt to make a current measurement of circuits with more than 600V present. Instrument damage and/or personal injury may result. Make sure the temperature probe is NOT plugged in during this test. Instrument set-up: FUNC. BLACK TEST LEAD COM 400.
E. Other Features Other Features (continued) Non-Contact Voltage (NCV) Relative mode (REL) WARNING! Never rely on the non-contact voltage function only. If a voltage is not detected, confirm there is no voltage by performing a voltage measurement with the test leads. Failure to do this could result in injury. The non-contact voltage feature works best when testing single wires. Make sure the test leads and temperature probe are disconnected while using the NCV feature. Instrument set-up: FUNC.
E. Other Features Other Features (continued) Non-Contact Voltage (NCV) Relative mode (REL) WARNING! Never rely on the non-contact voltage function only. If a voltage is not detected, confirm there is no voltage by performing a voltage measurement with the test leads. Failure to do this could result in injury. The non-contact voltage feature works best when testing single wires. Make sure the test leads and temperature probe are disconnected while using the NCV feature. Instrument set-up: FUNC.
Other Features (continued) Other Features (continued) Record Mode (MAX / MIN) Peak Hold Mode (P-H) Record mode allows you to record the maximum and minimum readings measured during a test. 1. Manually select the range for the function and set the meter up to perform a measurement as outlined earlier in this manual. 2. Depress the MAX/MIN button and “MAX” will be displayed along with the maximum reading recorded.
Other Features (continued) Other Features (continued) Record Mode (MAX / MIN) Peak Hold Mode (P-H) Record mode allows you to record the maximum and minimum readings measured during a test. 1. Manually select the range for the function and set the meter up to perform a measurement as outlined earlier in this manual. 2. Depress the MAX/MIN button and “MAX” will be displayed along with the maximum reading recorded.
Other Features (continued) Manual Ranging (R-H) The range hold button (R-H) activates manual ranging. Press the R-H button to cycle through available ranges. Pressing and holding the R-H button for approximately two seconds returns the meter to autorange mode and “auto” will be displayed in the upper left corner of the display. Data Hold (D-H) Press the D-H button at any time to freeze the reading on the LCD display.
Other Features (continued) Manual Ranging (R-H) The range hold button (R-H) activates manual ranging. Press the R-H button to cycle through available ranges. Pressing and holding the R-H button for approximately two seconds returns the meter to autorange mode and “auto” will be displayed in the upper left corner of the display. Data Hold (D-H) Press the D-H button at any time to freeze the reading on the LCD display.
Application Notes (DC Volts) Application Notes (Resistance) The 270 will accurately measure rectified DC Voltages like those encountered in furnaces and other appliances even though many of these devices do not have output filtering or other signal conditioning. When measuring DC Voltage of a battery, the most accurate reading can be attained by testing the battery under load.
Application Notes (DC Volts) Application Notes (Resistance) The 270 will accurately measure rectified DC Voltages like those encountered in furnaces and other appliances even though many of these devices do not have output filtering or other signal conditioning. When measuring DC Voltage of a battery, the most accurate reading can be attained by testing the battery under load.
Application Notes (AC Amps) When measuring AC Amps of a motor there are two types of measurements that can be made, running current and in-rush or start-up current. Start-up current will usually be much higher than running current. Set up the meter following the steps under “Measurement Procedure” on page 17, and then proceed with the following: • • 32 Clamp the meter around a single wire and reconnect power to the device. Read the current displayed on the meter. This is the running current of the motor.
Application Notes (AC Amps) When measuring AC Amps of a motor there are two types of measurements that can be made, running current and in-rush or start-up current. Start-up current will usually be much higher than running current. Set up the meter following the steps under “Measurement Procedure” on page 17, and then proceed with the following: • • 32 Clamp the meter around a single wire and reconnect power to the device. Read the current displayed on the meter. This is the running current of the motor.
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Accessories Standard Accessories 9 Volt Alkaline Battery Test Lead Set (1000V CATIII 10A) 0.
Accessories Standard Accessories 9 Volt Alkaline Battery Test Lead Set (1000V CATIII 10A) 0.
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270 SPECIFICATIONS (PARTIAL LIST) ±0.5% Basic DCV Accuracy (also see pages 8-11) Func. Range Res. DCV 400mV 4V 40V 400V 600V 0.1mV 0.001V 0.01V 0.1V 1V ACV 400mV 4V 40V 400V 750V 0.1mV 0.001V 0.01V 0.1V 1V ACA 40A 400A 0.1A 1A OHM 400W 4kW 40kW 400kW 4MW 40MW 0.1W 0.001kW 0.01kW 0.1kW 0.001MW 0.01MW DCuA 40uA 400uA 0.01uA 0.1uA TEMP -40ºF to 1000ºF 0.1ºF / 1ºF Test Products International, Inc. 9615 SW Allen Blvd., Ste.
