• 700 Amps AC
• Measure AC/DC volts, resistance and continuity
• Peak hold function
• Data hold
• CAT III 600 V rated
• cULus 61010
• 3-year limited warranty

The 291 comes complete with the following accessories:

• Carrying Pouch
• Test Lead Set
• Instruction Manual
• Battery

Model 291 Applications

• Thermocouples in furnaces and gas appliances
• Heat anticipator current in thermostats
• Test line and control voltage
• Compressor winding resistance
• Contactor and relay coil resistance
• Motor and compressor startup current
• Continuity of wiring
• Measure line current
• Test continuity of circuit breakers and fuses
• Measure voltage of direct drive DC motors
• Measure power supply voltage

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 - Bar graph to indicate rapid fluctuations

ELECTRICAL

• ACV - Measure line voltage
• ACA - Measure line current
• OHMS - Continuity of circuit breakers
• DCV - Voltage of direct drive DC motors
• ACA - Start up current of motors, relays, contactors and transformers

ELECTRONIC

• ACV - Measure power supply voltage
• ACA - Measure power supply current
• OHMS - Continuity of circuit breakers and fuses

SPECIFICATIONS

IEC 1010 Over Voltage:

• CAT II - 1000V
• CAT III - 600V
• Pollution Degree 2

DCV:

Range	Resolution	Accuracy	Impedance
40V	0.01V	±0.75% of reading, ±3 digits	10MΩ
400V	0.1V	±0.75% of reading, ±3 digits	10MΩ
600V	1V	±0.75% of reading, ±3 digits	10MΩ

ACV:

Range	Resolution	Accuracy	Impedance
400V	0.1V	±1.2% of reading, ±3 digits	10MΩ
750V	1V	±1.2% of reading, ±3 digits	10MΩ

ACA:

Range	Resolution	Accuracy	Impedance
400A	0.1A	±1.5% of reading, ±4 digits	45Hz to 450Hz
700A	1A	±1.5% of reading, ±4 digits	45Hz to 450Hz

* Warning: Test Leads: Use only correct type and overvoltage category rating.

OHM (Resistance):

Range	Resolution	Accuracy	Impedance
400Ω	0.1Ω	±1% of reading, ±10 digits	600V DC or AC Peak

Continuity Buzzer:

Test Voltage	Threshold	Over Load Protection
3V	< 50Ω (100 digits)	600 V DC or Peak AC

General Specifications:

Max. Volt. between any Input and Ground	600V
Display Type	4,000 Count, 4 times per second update
Operating Temperature	-10° to 45°C (14° to 113°F)
Storage Temperature	-20° to 55°C (-4° to 131°F)
Relative Humidity	0% to 80% (0° - 35°C / 32° - 95°F)
	0% to 70% (35° - 50°C / 95° - 122°F)
Power Supply	9 Volt Battery
Battery Life	80 hours, Alkaline
Size (H x L x W)	40mm x 190mm x 65mm
	(1.5in x 7.25in x 2.5in)
Weight	315g (11.1oz)