EC DECLARATION OF CONFORMITY 1
This is to certify that model 122 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, The Low
Voltage Directive by application of the following standards:
EN 50081-1 1992 Emissions Standard
EN 50082-1 1992 Immunity Standard
EN61010-1 1993 Safety Standard
EN61010-2-031 1995 Safety Standard
To ensure conformity with these standards, this instrument
must be operated in accordance with the instructions and
specifications given in this manual.
CAUTION:
Even though this instrument complies with the immunity standards, the
accuracy can be affected by strong radio emissions not covered in the above
standards. Sources such as hand held radio transceivers, radio and TV trans-
mitters, vehicle radios and cellular phones generate electromagnetic radia-
tion that could be induced into the test leads of this instrument. Care should
be taken to avoid such situations or alternatively, check to make sure that the
instrument is not being influenced by these emissions.
SAFETY CONSIDERATIONS 2
WARNING: Please follow manufacturers test proce-
dures whenever possible. Do not attempt to measure
unknown voltages or components until a complete under-
standing of the circuit is obtained.
GENERAL GUIDELINES
ALWAYS
• Test the 122 before using it to make sure it is operating properly.
• Inspect 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 circuit being measured.
• Disconnect power to circuit, then connect test leads to the 122, then to cir-
cuit being measured.
NEVER
• Attempt to measure unknown high voltages.
• Attempt to measure current with the meter in parallel to the circuit.
• Connect the test leads to a live circuit before setting up the instrument.
• Touch any exposed metal part of the test lead assembly.
INTERNATIONAL SYMBOLS 3
CAUTION: RISK OF ELECTRIC SHOCK
AC (ALTERNATING CURRENT)
DC (DIRECT CURRENT)
REFER TO INSTRUCTION MANUAL
GROUND
DOUBLE INSULATION
ON/OFF, PUSH BUTTON SWITCH
Features and Benefits
Safety Meets CE and IEC 1010 requirements. UL Listed.
Large LCD Easy to read at all angles and the majority of lighting levels.
Data Hold Freeze readings on the display.
Rubber Boot Added protection when the instrument is dropped. (122NB does
not include boot.)
Versatile Use accessories like a carbon monoxide attachment to expand
the capabilities of the 122.
PRODUCT APPLICATIONS 4
Perform the following with the TPI 122 and appropriate function:
HVAC/R
FUNCTION
ACV • Line voltage.
ACV or DCV • Control circuit voltage.
OHMS • Heating element resistance (continuity).
OHMS • Compressor winding resistance.
OHMS • Contactor and relay coil resistance.
OHMS • Continuity of wiring.
ELECTRICAL
FUNCTION
ACV • Measure line voltage.
OHMS • Continuity of circuit breakers.
DCV • Voltage of direct drive DC motors.
SPECIFICATIONS
a. General Specifications
Power Supply 9 Volt Battery
Battery Life 560 hrs. Alkaline
Size (H x L x W) 33mm x 86mm x 187mm (1.3” x 3.4” x 7.4”)
Weight 340g (12 oz)
SPECIFICATIONS (cont.) 5
IEC 1010 Over Voltage:
CAT II - 1000V, CAT III - 600V
Pollution Degree 2
b. DCV
Range Resolution Accuracy Impedance
2000mv 1mV ±0.5% of reading, 10M Ohm
20V 0.01V ±2 digits
200V 0.1V
600V 0.1V
c. ACV (45Hz to 450Hz)
Range Resolution Accuracy Impedance
2000mV 1mv
200V 0.1V ±1.2% of reading, 10M Ohm
600V 1V ±3 digits
d. OHM (Resistance,
ΩΩ
)
Range Resolution Accuracy Overload Protection
2kΩ 0.001kΩ ±0. 5% of reading, ±1 digit 600V DC or AC Peak
e. Continuity Buzzer
Test Voltage Threshold Overload Protection
2.5V <100Ω 600 V DC or Peak AC
*Warning: Test Leads: Use only correct type and overvoltage category rating.
MEASUREMENT TECHNIQUES 6
1. Controls and Functions:
Push Buttons
Turns the 122 on and off.
D/H Activates the Data Hold function.
Rotary Switch
V Used for measurement of DC Volts. Select
best range for the voltage to be measured.
V Used for measurement of AC Volts. Select
best range for the voltage to be measured.
ΩΩ
Used for measurement of Resistance and
Continuity.
Input Jacks
COM Black test lead connection for all functions.
V/
ΩΩ
Red test lead connection for OHM, Continuity
Buzzer, DCV and ACV functions.
