Fluke 4180/ 4181 Precision Infrared Calibrators

Manufacturer: Fluke Calibration
Model: 4180/ 4181

Features

Calibrated radiometrically for meaningful, consistent results.
Accredited calibration included
Accurate, reliable performance from –15 °C to 500 °C
Large target size of 152 mm (6 in) is required for calibrating most thermometers.
Light instrument weight of 8.6 kg (19 lbs) makes it easy to lift and carry.
Intuitive, easy-to-read display that indicates when temperature is stable.

4180/ 4181

Specifications

Specification	4180	4181
Temperature range (@ 23 °C ambient, 0.95 emissivity)	–15 °C to 120 °C	35 °C to 500 °C
Display accuracy¹	± 0.40 °C at –15 °C ± 0.40 °C at 0 °C ± 0.50 °C at 50 °C ± 0.50 °C at 100 °C ± 0.55 °C at 120 °C	± 0.35 °C at 35 °C ± 0.50 °C at 100 °C ± 0.70 °C at 200 °C ± 1.20 °C at 350 °C ± 1.60 °C at 500 °C
Stability	± 0.10 °C at –15 °C ± 0.05 °C at 0 °C ± 0.10 °C at 120 °C	± 0.05 °C at 35 °C ± 0.20 °C at 200 °C ± 0.40 °C at 500 °C
Uniformity (5.0 in dia of center of target)²	± 0.15 °C at –15 °C ± 0.10 °C at 0 °C ± 0.25 °C at 120 °C	± 0.10 °C at 35 °C ± 0.50 °C at 200 °C ± 1.00 °C at 500 °C
Uniformity (2.0 in dia of center of target)²	± 0.10 °C at –15 °C ± 0.10 °C at 0 °C ± 0.20 °C at 120 °C	± 0.10 °C at 35 °C ± 0.25 °C at 200 °C ± 0.50 °C at 500 °C
Heating time	15 min: –15 °C to 120 °C 14 min: 23 °C to 120 °C	45 min: 35 °C to 500 °C
Cooling time	15 min: 120 °C to 23 °C 20 min: 23 °C to –15 °C	100 min: 500 °C to 35 °C 40 min: 500 °C to 100 °C
Stabilization time	10 minutes
Nominal emissivity³	0.95
Thermometer emissivity compensation	0.9 to 1.0
Target diameter	152.4 mm (6 in)
Computer interface	RS-232
Power	115 V ac (± 10%), 6.3 A, 50/60 Hz, 630 W 230 V ac (± 10%), 3.15 A, 50/60 Hz, 630 W	115 V ac (± 10%), 10 A, 50/60 Hz, 1000 W 230 V ac (± 10%), 5 A, 50/60 Hz, 1000 W
Fuse(s)	115 V ac 6.3 A, 250 V, slow blow 230 V ac 3.15 A, 250 V, T	115 V ac 10 A, 250 V, fast blow 230 V ac 5 A, 250 V, F
Size (HxWxD)	356 mm x 241 mm x 216 mm (14 in x 9.5 in x 8.5 in)	356 mm x 241 mm x 216 mm (14 in x 9.5 in x 8.5 in)
Weight	9.1 kg (20 lb)	9.5 kg (21 lb)

Notes:
1. For 8 µm to 14 µm spectral band thermometers with emissivity set between 0.9 and 1.0.
2. The uniformity specification refers to how IR thermometers with different spot sizes both focused at the center of the target will measure the same temperature.
3. The target has a nominal emissivity of 0.95, however it is radiometrically calibrated to minimize emissivity related uncertainties.