Overview of Primary Product

V
AC
& V
DC
200m Vrange 500VDC / 350VAC
for 15 sec
>200m Vrange 600VDC / 600VAC
A
AC
& A
DC
0.5A / 500V
mA input (6.35X32mm)
model RFM74
10A / 600V
10A input (.25" x 1")
model RFL83
Ohms (Ω) 500VDC / 500VAC
Diode 500VDC / 500VAC
Contiuity 500VDC / 500VAC
LT SERIES
DIGITAL
MULTIMETER
Model LT83
OPERATOR'S MANUAL
AC Voltage
Ranges: 200mV, 2000mV, 20V, 200V, 600V.
Resolution: 0.1mV.
Accuracy: (50Hz to 500Hz)
≤ 20V range 1.2%±4
≥ 200V range 2%±4
Input impedence: 10MΩ
DC Current (through meter)
Ranges: 200µA, 20mA, 200mA, 10A
Accuracy: 1%±1 (2%±3 for 10A range)
Voltage burden: 350mV
(650mV for 200mA range,
850 mV for 10A range)
Resolution: 100nA
AC Current (through meter)
Ranges: 200µA, 20mA, 200 mA, 10A
Resolution: 100nA
Accuracy: (50Hz to 500Hz)
1.5%±4, 2.5% on 10A range.
Voltage burden: 350mV, 650mV for 200mA
range, 850 mV for 10A range.
General Description
The LT83 is an excellent low cost digital
multimeter for testing basic electrical
parameters including current, resistance and
voltage. The LT83 works with all Fieldpiece
accessories, when connected with our
deluxe test leads. The body is made out of
durable ABS plastic and comes standard
with a rubber holster for added protection.
Diode Test
Displays forward voltage drop.
Test current: 1mA
Test voltage: 3VDC typical.
Accuracy: 1.5%±1
Overload Protection
General Specifications
Auto-power off: automatically turns off
after approximately 25 minutes to extend
battery life.
MAX HOLD and DATA HOLD: all ranges
Indicators: Continuity beeper, (<100Ω,
<100msec, 3V typ), low battery, polarity.
Overrange: "OL" is displayed.
Environmental: Operating temperature
32°F to 122°F, storage 0°F to 140°F with
batteries removed, RH<70%.
Temperature coefficient: 0.05 x (accu-
racy) per °F (32° F to 65°F, 80°F to 122°F)
Measurement rate: 2.5 times/sec nominal.
Battery life: >300 hours typical (carbon-zinc
battery)
Battery type: 9V NEDA 1604 type
Safety: Designed to IEC1010-1 Cat. III 600V,
UL1244.
Functional Specifications
Accuracy specifications @ 74°F±8°F, relative
humidity less than 75%. Accuracy
specified as ±% of reading ± number of
least significant digits.
For Your Safety...
Inspect the test leads for damage to the
insulation or exposed metal. Replace if
suspect. Never ground yourself when taking
electrical measurements. Do not touch
exposed metal pipes, outlets, fixtures, etc.,
which might be at ground potential. Keep
your body isolated from ground by using dry
clothing, rubber shoes, rubber mats, or any
approved insulating material. When
disconnecting from a circuit, disconnect the
"RED" lead first, then the common lead. Work
with others. Use one hand for testing. Turn
off power to the circuit under test before
cutting, unsoldering, or breaking the circuit.
Keep your fingers behind the finger guards
on the probes.
All Voltage Tests: All voltage ranges will
withstand up to 600VAC or 600VDC. Do not
apply more than 600VDC or 600VAC.
Fieldpiece Instruments, Inc.
580 West Central Ave. Suite A
Brea, CA 92821
Phone: [phone] Fax: [phone]
www.fieldpiece.com
Optional Cases
ANC1 Four pocket case: holds meter and two
accessory heads.
ANC2 Single pocket case: holds one head.
ANC3 Briefcase-style case: holds two meters,
twelve heads, plus most hand tools needed for
any job.
ANC5 Padded pouch-style case with handles.
ANC7 Padded case for SC series: holds clamp
meter or meter with one head.
ANC8 Mid-size case: holds two meters with
four accessory heads.
AC Tests: Disconnect the meter from the
circuit before turning any inductor off, including
motors, transformers, and solenoids. Hi voltage
transients can damage the meter beyond repair.
Do not use during electrical storms.
Unit Of Measure Multipliers
For your reference, the following symbols
are often used to make measurement easier:
Symbol Verbal Multiplier
M mega X1,000,000
K kilo X1,000
m milli ÷1,000
µ micro ÷1,000,000
ACH AC Current Clamp: measures AC current
up to 300A.
ACM3 Carbon Monoxide Head: measures the
concentration of carbon monoxide in parts
per million (PPM).
ACDC6 AC/DC Current Clamp: measures AC
or DC current to 600A.
AAV3 Anemometer Head: measures air
velocity and temperature.
AHV28 High Voltage Probe: safely measures
high voltage to 28KVAC.
AUA2 Microamp and Milliamp Head: for
microamps DC on flame rectifier diodes.
ATIR3 Non Contact Infra-red Temperature
Head: measures temperature at any
ditance.
ASH2 Superheat Head: measures pressure,
temperature, and displays superheat.
AVG2 Vacuum Gauge Head: measures
vacuum in microns of mercury.
Resistance (Ohms)
Ranges: 200Ω, 2KΩ, 20KΩ, 200KΩ, 2MΩ,
20MΩ
Resolution: 0.1Ω.
Accuracy: 1%±4 (2%±4 on 20MΩrange)
Open circuit voltage: 0.3V (3V on 200Ω
range)
DC Voltage
Ranges: 200mV, 2000mV, 20V, 200V, 600V.
Resolution: 100mV.
Accuracy: 0.5%±1
Input impedence: 10MΩ
Optional Accessory Heads
Fieldpiece accessory heads convert the
desired parameter in to a milivolt signal. For
example, the ATH4 converts one °F into one
mili-volt DC. The multimeter must then be set to
read milivolts DC. An exception is the ACH
current clamp which must be set to read AC
milivolts. Any digital multimeter can be used in
conjunction with Fieldpiece Accessories.
Use Fieldpiece deluxe silicone test leads
(model ADLS2) to use the accessory heads
with the LT83 or most other meters.
As of this printing, Fieldpiece offers the
following accessory heads:
ATH4 Dual Temperature Head: measures
temperatures with a resolution of 0.1°F.
ARH4 Digital Sling Psychrometer Head:
measures wet bulb, dew point, RH% and
temperature of ambient air.
Air Velocity
& Temperature
Head
English
READLOBATT
ON
LCDX
100
Average
(16sec)
Metric
Real
time
AAV3
AUTO-
OFF
English Metric
Ft/min M/s
KM/hrMPH
ºF ºC
OFF
AAV3 ARH4 ACM3 ATIR3 AVG2
Converts
1 micron of
mercury to
1mVDC
Vacuum
Gauge
Accessory
Head
AVG2
INC
DEC
ON
LOBATT
STABLE