Omega HHM290, Инструкция по эксплуатации, Страница: 9 / 10

7 10
Infrared (Non-Contact) Temperature Measurements
1. Set the Function switch to "IR" position.
2. Press the or buttons to set the Emissivity of the target.
3. Aim at the target. Press & hold the button to turn on the laser
beam. There is a switch in front of the laser beam aperture which
projects either Laser Dot or Laser Circle. The laser dot indicates
the center of the optical field of view. The laser circle indicates
the perimeter of the field of view. There is a 0.63 inches offset
between the laser aperture and the center of the optical field of
view. The laser beam only turns on when the button is
pressed & held Releasing the button turns off the laser beam.
4. The target must be larger than the optical field of view of the
multimeter (Spot Size).
5. Read the temperature.
Frequency Measurements
1. Set the Function switch to the "Hz" position.
2. Connect the test leads from the point of measurement to the "V"
& "COM" jacks of the meter.
3. Read the frequency.
Note: Unplug the test leads from the multimeter before
making any type of thermocouple temperature
measurements.
Thermocouple Temperature Measurements
1. Set the Function switch to "T/C" position.
2. The multimeter can accept up to two K type thermocouple
inputs.
3. Plug in the thermocouple probe(s) to the mating built-in
connector(s) in the meter.
4. The temperature is displayed in either Degree Celsius (°C) or
Degree Fahrenheit (°F). To change the temperature Engineering
unit, press the
button.
5. Press the button to display T1, T2, or T1-T2.
DC VOLTS
Ranges: 430mV(manual),4.3V,43V,430V,1000V
Resolution: 10µV
Accuracy: ±(0.25%rdg + 1dgt)
Input impedance: >10M
Ω
Overload protection: 1000VDC or 750VAC rms
Low Energy circuits: Up to 1000VDC
High Energy circuits: Up to 250VDC
AC VOLTS (50Hz-2KHz)
Ranges: 400mV(manual),4.0V,40V,400V,750V
Resolution: 10µV
Accuracy: ±(% of no. of digits)
Input impedance: >10M
Ω
Overload protection: 1000VDC or 750VAC rms
Low Energy circuits: Up to 750VAC
High Energy circuits: Up to 250VAC
Range 50Hz-100Hz 100Hz-500Hz 500Hz-2KHz
400mV ±(2.0%rdg+3dgts) N/A
4.0V N/A
40V
400V
750V
±(1.5%rdg
+3dgts)
±(0.75%rdg+2dgts)
DC CURRENT
Ranges: 430µA,4.3mA,43mA,430mA,10A
Resolution: 10nA
Accuracy: ±(0.5%rdg + 1dgt) on 430µA to 430mA ranges
±(2.0%rdg + 1dgt) on 10A range
Burden voltage: 1.4V on all ranges, execpt
1.5V on 10A range
Input protection: 0.5A / 250V fast blow fuse
10A / 600V fast blow ceramic fuse
AC CURRENT (50Hz-1KHz)
Ranges: 400µA,4.0mA,40mA,400mA,10A
Resolution: 10nA
Accuracy: ±(1.0%rdg + 2dgts) on 400µA to 400mA ranges
±(2.5%rdg + 2dgts) on 10A range
Burden voltage: 1.4V on all ranges, execpt
1.5V on 10A range
Input protection: 0.5A / 250V fast blow fuse
10A / 600V fast blow ceramic fuse
RESISTANCE
Ranges: 430
Ω
,4.3K
Ω
,43K
Ω
,430K
Ω
,4300K
Ω
,43M
Ω
Resolution: 10m
Ω
Accuracy: ±(0.3%rdg + 3dgts) on 430
Ω
to 4300K
Ω
ranges
±(1.5%rdg + 4dgts) on 43M
Ω
range
Audible indication: < 30
Ω
on 430
Ω
range
Open circuit volts: 1.2Vdc (3.0Vdc on 430
Ω
range)
Overload protection: 500VDC or AC rms