LT16A, Classic Style Digital Multimeter w/ Phase Rotation

Overview:
The LT16A is a classic style multimeter with True RMS meter and phase rotation. This manual ranger covers the electrical parameters you need for HVAC/R and, with detachable test leads, works with Fieldpiece's accessory heads to test non-electrical parameters too. The LT16A meter measures current, resistance, voltage, capacitance, frequency, continuity and more. Test leads store in the meter body along with the tilt stand and magnetic hanger. The body is constructed of durable ABS plastic and a blue backlight makes the large LCD even more visible. It's the meter for technicians that like to search down, figure out and solve electrical mysteries on a system.

The LT16A is a True RMS manual ranging DMM that comes with an amp clamp and includes phase rotation for testing three-phase motors. Use the MIN/MAX function to record highs and lows. The continuity beeper tells you if a circuit is open or closed. Operation of the LT16A is easy. Simply select a range and test to hunt down those electrical culprits.

Features and Benefits:

Works with Fieldpiece Accessory Heads
There is a Fieldpiece accessory head available for just about any job. There are heads to measure temperature, superheat, subcooling, RH%, wet bulb, dew point, vacuum (microns of mercury), manometer (inches of water column), amps AC&DC, high voltage, CO, %CO2, air velocity, and many more.

Continuity Indicator
If you were doing lab testing, these features would probably drive you crazy. We've heard from more than one HVAC/R veteran that these features really remind you of what you're doing and they've avoided potentially dangerous situations in the field. The Hi-V LED and beeper let you know when you've hooked up to a circuit over 30V. The continuity LED and beeper tells you if a circuit is open or closed.

400AAC
Using the detachable test leads and the accessory head amp clamp, read 0-400 amps directly on your meter.

Capacitance (MFD)
Measure microfarads on motor-run and motor-start capacitors using this range. Disconnect the capacitor from power first. Short the terminals to discharge the capacitor. Disconnect any resistors that might be between the terminals of the capacitor and measure to check for degradation.

Microamps DC - Flame Rectification Tests
The most common "no heat" call has to do with a malfunctioning flame sensing diode. Simply turn the meter to microamps DC, hook up, and see if the flame sensing rod is functioning properly.

Phase Rotation
Measure the poles of 3-phase motors to make sure it's spinning in the right direction.

Frequency
Measure from 10Hz to 40kHz using this range with 1 Hz resolution.

True RMS
Digital multimeters use two different types of AC sensing. The most common is average sensing, normalized to a true RMS value of a sine wave. The other is true RMS sensing. The actual true RMS value is sensed for a wave form within the limits of the crest factor. Either sensing method will give the same results on a clean sine wave but they may differ on a non-sinusoidal waveform.

Silicone Leads with Detachable Probe Tips
Because the wire insulation is silicone, the leads stay flexible in cold weather and will not melt if bumped by a soldering iron. When testing electrical circuits with two hands, there is a risk that a careless mistake may complete a circuit through your body and potentially cause death or injury. Use the either probe clip on rubber boot to connect and firmly hold the V lead in place, detach the COM probe tip, connect an alligator lead tip to COM and ground, and perform a one-hand test more easily than most meters on the market. Built-in lead storage makes it easy to keep everything together from job to job.

Tilt Stand and Magnetic Hanger
Technicians enjoy the magnetic hanger because it keeps the meter out of the way while testing. The LT16A includes the magnet and a tilt stand to give you a choice in the way you want to use it.

Bright Blue Backlight
Easily read the display in overcast conditions or in dimly lit areas.

MAX/MIN hold
Record the minimum or maximum reading during a measurement. To exit the MIN/MAX function, hold the button for more than 2 seconds

More Features:

• Volts AC
• Volts DC
• Resistance (Ohms)
• Diode Test
• Rugged ABS case with rubber boot
• Fits naturally in your hand despite classic design
• Auto power-off (APO) to conserve battery life

Competitive Advantages:
The electrical parameters on this meter are among the most comprehensive in the industry. Add the capability of testing all the other parameters you need for HVAC/R field service through accessory head instruments, and this meter goes from contender to a hands-down favorite. Literally. Use the included deluxe silicone lead set to hook up the V and COM leads, hang or tilt the meter out of the way, and use the included third yellow lead to perform a "no-hands" test on a three-phase motor. Although there are a lot of great electrical meters out there, not many can match the LT16A in it's versatility for HVAC/R electrical testing.

What's Included:

• Classic Style Digital Multimeter with Phase Rotation - LT16A
• Deluxe Silicone Test Leads - ADLS2
• One (1) Yellow Phase Rotation Test Lead - AYL1
• Short Alligator Lead Extensions - ASA2
• 400A Amp Clamp Accessory - ACH4
• Mail Pouch-Style Instrument Case - ANC5
• 9V battery (installed)
• Operator's manual

Additional Specifications:

DC voltage
Ranges: 200mV, 2000mV, 20V, 200V, 600V
Resolution: 0.1mV
Accuracy: 0.5%±1
Input impedence: 10 milliohm

AC voltage True RMS (50Hz-500Hz)
Ranges: 200mV, 2000mV, 20V, 200V, 600V
Conversion: True RMS
Crest factor: Less than or equal to 3
Resolution: 0.1mV
Accuracy: 1.5%±5(200mV to 20V ranges), 2%±5(200V, 600V ranges) Input impedence: 10 milliohm

DC Current (through meter)
Ranges: 200 micro A, 20mA, 200mA, 2A
Resolution: 0.1 micro A
Accuracy: 1.0%±1 (200 micro A to 200mA ranges), 2.5%±1 (on 2A range)
Voltage burden: 800mV

AC Current True RMS (through meter)
Ranges: 200 micro A, 20mA, 200mA, 2A
Crest factor: Less than or equal to 3
Resolution: 0.1 micro A
Accuracy: 1.5%±5 (200 micro A to 200mA ranges), 3.0%±5 (on 2A range)
Voltage burden: 800mV

Frequency (autoranging)
Range: 10Hz to 40KHz
Resolution: 1Hz
Sensitivity: 3.5V rms min
Accuracy: 0.1%± 3

Resistance (ohms)
Ranges: 200 ohms, 2 kohms, 200k ohms, 20M ohms, 2000M ohms
Resolution: 0.1 ohm
Accuracy: 1.0%±4 (200 ohm to 200k ohm ranges), 2.0%±4 (20M ohm range), (5.0%-10)+10 (2000M ohm range)
Open circuit voltage: 0.3VDC typical, (3.0VDC on 200 ohm and 2000M ohm range)

Diode test
Accuracy: 1.5%±3
Test current: Approx. 1.0mA
Open circuit voltage: 3.0VDC typical

Capacitance (MFD)
Ranges: 200 micro F, 2k micro F, 20k micro F
Resolution: 0.1 micro F
Accuracy: 4%±10
Test frequency: 21Hz
Test voltage: <3.0V

Phase rotation
Range: 80VAC to 500VAC (45Hz to 450Hz) This function enables you to connect 3-phase power to the correct leads of a motor to insure the motor turns in the intended direction. The terminals the motor are marked L1, L2, and L3. The wires supplying power are not marked. Connect meter jacks marked L1, L2, and L3 to the power wires in any order. Make sure all three leads are connected (L1, L2, and L3 will be "on"). "OK" indicates "forward". Connect L1 on the meter to L1 on the motor, L2 on the meter to L2 on the motor, etc. The motor will turn in the direction designed. If you get "ER" (reverse), swap any two leads. It should then say "OK."

Fuse Replacement:
When only certain ranges quit working, check the fuse. Open the case and replace according to the Overload Protection values below. If that doesn't work visit Fieldpiece's Warranty Page to check for other problems.