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Fluke 6331/ 7321/ 7341/ 7381 Deep-Well Compact Bath

Features

Ample immersion depth and great stability, in a high value compact bath

  • 457 mm (18 in) of depth with just 15.9 liters (4.2 gal) of fluid
  • Perfect for liquid-in-glass thermometers with optional LIG kit
  • Fast, quiet, compact (yet deep!), and economical

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).

 

Specs

Specifications

Range
6331  35 °C to 300 °C
7321  –20 °C to 150 °C
7341  –45 °C to 150 °C
7381  –80 °C to 110 °C
Stability
6331 ±0.007 °C at 100 °C (oil 5012)
±0.010 °C at 200 °C (oil 5017)
±0.015 °C at 300 °C (oil 5017)
7321 ±0.005°C at –20°C (ethanol)
±0.005°C at 25°C (water)
±0.007°C at 150°C (oil 5012)
7341 ±0.005°C at –45°C (ethanol)
±0.005°C at 25°C (water)
±0.007°C at 150°C (oil 5012)
7381 ±0.006°C at –80°C (ethanol)
±0.005°C at 0°C (ethanol)
±0.005°C at 100°C (oil 5012)
Uniformity
6331 ±0.007 °C at 100 °C (oil 5012)
±0.017 °C at 200 °C (oil 5017)
±0.025 °C at 300 °C (oil 5017)
7321 ±0.007 °C at –20 °C (ethanol)
±0.00 7 °C at 2 5°C (water)
±0.010°C at 150 °C (oil 5012)
7341 ±0.007 °C at –45 °C (ethanol)
±0.007 °C at 25 °C (water)
±0.010 °C at 150 °C (oil 5012)
7381 ±0.007 °C at –80 °C (ethanol)
±0.007 °C at 0 °C (ethanol)
±0.007 °C at 100 °C (oil 5012)
Heating Time†
6331  130 minutes, from 40 °C to 300 °C (oil 5017)
7321  120 minutes, from 25 °C to 150 °C (oil 5012)
7341  120 minutes, from 25 °C to 150 °C (oil 5012)
7381  60 minutes, from 25 °C to 100 °C (oil 5012)
Cooling Time†
6331  14 hours, from 300 °C to 100 °C (oil 5017)
7321  110 minutes, from 25 °C to –20 °C (ethanol)
7341  130 minutes, from 25°C to –45°C (ethanol)
7381  210 minutes, from 25 °C to –80 °C (ethanol)
Stabilization Time
   15–20 minutes
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 x 172 mm (4.7 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†
6331 115 VAC (±10 %), 50/60 Hz, 14.8 A or
230 VAC (±10 %), 50/60 Hz, 7.4 A, specify
7321 115 VAC (±10 %), 60 Hz, 14 A or
230 VAC (±10 %), 50 Hz, 7 A, specify
7341 115 VAC (±10 %), 60 Hz, 16 A or
230 VAC (±10 %), 50 Hz, 8 A, specify
7381 230 VAC (±10 %), 50 or 60 Hz, specify, 10 A
Volume
  15.9 liters (4.2 gal)
Size (HxWxD)
  1067 x 356 x 788 mm (940 mm from floor to tank access opening) [42 x 14 x 31 in (37 in from floor to tank access opening)]
Weight
6331  41 kg (90 lb.)
7321  62 kg (137 lb.)
7341  68 kg

Models

 

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