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Fluke 6332A / 7342A Temperature Calibration Bath


Fast, 0.01 °C stability baths backed by Fluke metrology, with a deep tank for calibrating PRTs and liquid-in-glass thermometers

The 6332A / 7342A Temperature Calibration Baths are ideal for lab managers and technicians in government, corporate, and independent calibration labs who need a bath with good stability, uniformity, and speed to temperature for calibrating thermometers and sensors of various sizes and shapes. Two models cover a wide temperature range from –40 °C to 300 °C. These baths offer a large 145 mm tank diameter with plenty of immersion depth required to calibrate industrial PRTs, thermistors, thermocouples, sanitary sensors, transmitters, and liquid-in-glass thermometers.

The 6332A / 7342A baths are designed for the customer who wants a quality bath backed by Fluke metrology at an affordable price. These baths give you secondary standards level performance, quality design that’s built to last, and many features and accessories that improve lab efficiency and productivity..

Key features

  • Wide temperature range
    • 6332A: 50 °C to 300 °C
    • 7342A: –40 °C to 150 °C
  • Stability 0.01 °C
  • Uniformity (working area)
    • 6332A: 0.015 °C (50 °C to 200 °C), 0.02 °C (201 °C to 300 °C)
    • 7342A: 0.01 °C (full range)
  • Fast heating and cooling times: Heating rate maximum 1.8 °C/minute. Cooling rate maximum 1.1 °C/minute.
  • Large tank area: diameter 145 mm (5.7 inches) by depth 450 mm (17.7 inches)
  • Programmable setpoint temperatures and ramp rates
  • Adjustable fluid level
  • Temperature stability indicator lets you know when the bath is ready to use


General Specifications
Size Height: 1080 mm (42.5 in)
Width:  445 mm (17.5 in)
Depth:  495 mm (19.5 in)
Weight 6332A:  26 kg (57.3 lb)
7342A:  50 kg (110.2 lb)
Fluid Volume 12 liters (3.2 gallons)
Inner Tank Diameter 145 mm (5.7 in)
Maximum Fluid Depth 450 mm (17.7 in)
Temperature Specifications
  6332A 7342A
Range (at 23 °C ambient temperature) 50 °C to 300 °C –40 °C to 150 °C
Maximum Display Error 1.0 °C 1.0 °C
Temperature Stability 0.01 °C 0.01 °C
Temperature Uniformity (working area) 0.015 °C, 50 °C to 200 °C
0.02 °C, 201 °C to 300 °C
0.01 °C (full range)
Heating Time 25 °C to 300 °C (silicone oil, 710): 165 min
–40 °C to 25 °C (ethanol): 35 min
25 °C to 150 °C (silicone oil, 200.50): 75 min
Cooling Time 300 °C to 80 °C (silicone oil, 710): 825 min 150 °C to 25 °C (silicone oil, 200.50): 110 min
25 °C to –40 °C (ethanol): 135 min
Stabilization Time 20 minutes 20 minutes
Factory Calibration Limited range calibration traceable to the SI through a national metrology institute Limited range calibration traceable to the SI through a national metrology institute
For full product specifications, please refer to the 6332A/7342A Specifications documen


Model Name Description

Isothermal Calibration Bath, 50 °C to 300 °C


Isothermal Calibration bath, -40 °C to 150 °C


Accessory Description

Readout Shelf Fixture


Adjustable Probe Holding Fixture


Fluid Overflow Kit


Floor Cart


Aluminum Equilibration Block


Bath Cover, stainless steel with holes


Bath Cover, stainless steel without holes


Condenser Hot Air Duct Fixture (7342A only)


Magnifying Scope for Liquid-in-Glass Thermometer Calibration

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