291 TPI (Test Products Int), 291 Datasheet - Page 7

• Manufacturer Part Number: 291
• Description: MANUAL DGTL CLAMP W/TEST LEADS
• Manufacturer: TPI (Test Products Int)
• Series: 291r
• Type: Digital (DMM)r

Specifications of 291

• Includes: Battery, Case, Test Leads
• Style: Clamp
• Display Digits: 3.75
• Display Type: LCD
• Display Count: 4000
• Function: Voltage, Current, Resistance
• Functions, Extra: Continuity
• Features: Hold
• Ranging: Manual
• Response: Average
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2. Product Applications
Perform the following tests and/or measurements with
the 291 and the appropriate function:
HVAC/R
ACA
ACV
ACV or DCV • Control circuit voltage.
OHMS
OHMS
OHMS
ACA
OHMS
ALL
ELECTRICAL
ACV
ACA
OHMS
DCV
ACA
ELECTRONIC
ACV
ACA
OHMS
• Heat anticipator current in thermostats.
• Line voltage.
• Heating element resistance (continuity).
• Compressor winding resistance.
• Contactor and relay coil resistance.
• Motor and compressor start up current.
• Continuity of wiring.
• Bar graph to indicate rapid fluctuations.
• Measure line voltage.
• Measure line current.
• Continuity of circuit breakers.
• Voltage of direct drive DC motors.
• Start up current of motors, relays,
• Measure power supply voltage.
• Measure power supply current.
• Continuity of circuit breakers and fuses.
contactors and transformers.
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