Ample immersion depth and great stability, in a high value compact bath featuring four models covering temperatures from -80°C to 300°C
Find high temperature baths (300°C) and refrigerated baths for low temperature calibration (-80°C), in compact packages, and with deep immersion from Fluke Calibration our metrology baths are well known world-wide for excellent temperature control that maintains excellent temperature stability (+/- 0.005°C) and uniformity (+/- 0.007°C).
• 457 mm (18 in) of depth with just 15.9 L (4.2 gal) of fluid
• Perfect for liquid-in-glass thermometers with optional LIG kit
• Fast, quiet, compact (yet deep!), and economical
| 6331 | 7321 | 7341 | 7381 |
Range | 35 °C - 300 °C | -20 °C - 150 °C | -45°C - 150°C | -80°C - 110°C |
Stability | +/- 0.007°C at 100°C (oil 5012) | +/- 0.005°C at -20°C (ethanol) | +/- 0.005°C at -45°C (ethanol) | +/- 0.006°C at -80°C (ethanol) |
Uniformity | +/- 0.007°C at 100°C (oil 5012) | +/- 0.007°C at -20°C (ethanol) | +/- 0.007°C at -45°C (ethanol) | +/- 0.007°C at -80 °C (ethanol) |
Heating Time† | 130 min, from 40°C to 300°C (oil 5017) | 120 min, from 25°C to 150°C (oil 5012) | 120 min, from 25°C to 150°C (oil 5012) | 60 min, from 25°C to 100°C (oil 5012) |
Cooling Time† | 14 h, from 300°C to 100°C (oil 5017) | 110 min, from 25°C to -20°C (ethanol) | 130 min, from 25°C to -45°C (ethanol) | 210 min, from 25°C to -80°C (ethanol) |
Stabilization Time | 15–20 min | |||
Temperature Setting | Digital display with push-button data entry | |||
Set-Point Resolution | 0.01°; 0.00018° in high-resolution mode | |||
Display Resolution | 0.01° | |||
Digital Setting Accuracy | +/- 1°C | |||
Digital Setting Repeatability | +/- 0.01°C | |||
Access Opening | 120 mm x 172 mm (4.7 in x 6.8 in) | |||
Depth | 457 mm (18 in.) without Liquid-in-Glass Thermometer Cal Kit 482 mm (19 in.) with Liquid-in-Glass Thermometer Cal Kit | |||
Wetted Parts | 304 Stainless Steel | |||
Power† | 115 VAC (+/- 10%), 50/60 Hz, 14.8 A or | 115 VAC (+/- 10%), 60 Hz, 14 A or | 115 VAC (+/- 10%), 60 Hz, 16 A or | 230 VAC (+/-10%), 50 or 60 Hz, specify, 10 A |
Volume | 15.9 L (4.2 gal) | |||
Size (H x W x D) | 1067 x 356 x 788 mm (940 mm from floor to tank access opening) [42 in x 14 in x 31 in (37 in from floor to tank access opening)] | |||
Weight | 41 kg (90 lb.) | 62 kg (137 lb.) | 68 kg (150 lb.) | 91 kg (200 lb.) |
Automation Package | Interface-it software and RS-232 included (IEEE-488 optional) |
†Rated at nominal 115 V (or optional 230 V)
Fluke Calibration 6331 / 7321 / 7341 / 7381 Deep-Well Compact Baths - 6331 Manual 2.1 MB |
Fluke Calibration 6331 / 7321 / 7341 / 7381 Deep-Well Compact Baths - 7321 Manual 2.5 MB |
Fluke Calibration 6331 / 7321 / 7341 / 7381 Deep-Well Compact Baths - 7341 Manual 917.6 KB |
Fluke Calibration 6331 / 7321 / 7341 / 7381 Deep-Well Compact Baths - 7381 Manual 1.6 MB |
Fluke Calibration 6331 / 7321 / 7341 / 7381 Deep-Well Compact Baths - Calibration Bath Fluids 548.6 KB |
Fluke Calibration 6331 / 7321 / 7341 / 7381 Deep-Well Compact Baths - Choosing Calibration Bath Fluids 121.6 KB |