Fluke 279 FC - Frequency Measurement; Input Characteristics; MIN MAX Recording; Infrared Camera

279 FC
Calibration Manual
6
Frequency Measurement
Input Characteristics
MIN MAX Recording
Infrared Camera
Temperature
Temperature Measurement Range .....................-10 °C to +200 °C
Temperature Measurement Accuracy...................±5 °C or ±5 %, whichever is greater, at 25 °C
Temperature Coefficient......................................0.2 °C or 0.2 %, whichever is greater, for each °C from 25 °C
Emissivity...............................................................0.95 fixed
Image Performance
Image Capture Frequency ..................................8 Hz
Detector Type......................................................Uncooled Vanadium Oxide
Thermal Sensitivity (NETD).....................................≤200 mK
Infrared Spectral Band ........................................7.5 µm to 14 µm
IR Image Resolution............................................80 x 60 minimum
Field of View........................................................36 ° (w) x 27 ° (h)
Focus Mechanism...............................................Fixed focus
Distance-to-Spot .................................................162:1
Image Presentation
Palette.................................................................Ironbow
Level and Span ...................................................Auto
Image Capture and Data Storage
Image Capture ....................................................Image available for review before a save
Storage Medium..................................................Internal memory, stores up to 100 images
Image Transfer....................................................Fluke Connect™ / SmartView
®
File Format..........................................................is2
Range Resolution
Measurement
[1]
99.99 Hz 0.01 Hz 0.1 % + 1
999.9 Hz 0.1 Hz 0.1 % + 1
[1] Frequency is specified up to 500 Hz.
Minimum sensitivity:
· 5 % of range in V ac and V dc to 500 Hz
· 2 Amps in A ac
Function
Overload
Protection
Input Impedance
(nominal)
Common Mode
Rejection Ratio
(1 kΩ unbalance)
Normal Mode Rejection

1100 V rms
>10 MΩ <100 pF
>120 dB at dc, 50 Hz or 60 Hz >60 dB at 50 Hz or 60 Hz

1100 V rms
>10 MΩ <100 pF
>60 dB, dc to 60 Hz

1100 V rms
>10 MΩ <100 pF
>120 dB at dc, 50 Hz or 60 Hz >60 dB at 50 Hz or 60 Hz
Open Circuit Test
Voltage
Full Scale Voltage
Typical Short Circuit Current
To 6 M
50 MΩ
Ω / 
1100 V rms <2.7 V dc <0.7 V dc <0.9 V dc
<350 µA
R / 
1100 V rms <2.7 V dc 2.000 V dc <1.1 mA
Function Measurement
DC Functions
The specified accuracy of the measurement function ±12 counts for changes >350 ms in duration.
AC Functions
The specified accuracy of the measurement function ±40 counts for changes >900 ms in duration.