Calibration Bath Selection Guide

A calibration bath is a uniform temperature enclosure with a constant temperature setting that can be adjusted manually or with automation. These calibration baths use a mixed fluid to provide excellent thermal contact for temperature calibration. They offer high stability, a large working volume, and flexibility for calibrating a variety of temperature sensors. A world-class temperature controller and 30 plus years of experience make these the choice of National Metrology Institutes and calibration laboratories around the world.

Compact calibration baths: low and high temperature
Model	Range	Stability	Depth	Features
6330	35 °C to 300 °C	±0.005 °C at 100 °C ±0.015 °C at 300 °C	234 mm 9.25 in	Small benchtop footprint. Optional cart includes storage space. High temperature bath
7320	–20 °C to 150 °C	±0.005 °C at –20 °C ±0.005 °C at 25 °C	234 mm 9.25 in	Small 9.2-liter (2.4-gallon) tank. Uniformity ±0.005 °C.
7340	–40 °C to 150 °C	±0.005 °C at –40 °C ±0.005 °C at 25 °C	234 mm 9.25 in	Low temperature calibrations. Metrology-level performance.
7380	–80 °C to 100 °C	±0.006 °C at –80 °C ±0.010 °C at 0 °C	178 mm 7 in	Achieves –80 °C in less than 130 minutes. Quiet operation.
7312	–5 °C to 110 °C	±0.001 °C at 0 °C	496 mm 19.5 in	Maintains two TPW cells. Compact, quiet.
6331	40 °C to 300 °C	±0.007 °C at 100 °C ±0.015 °C at 300 °C	457 mm 18 in	18 in of depth with just 16 liters of fluid. RS-232 included.
7321	–20 °C to 150 °C	±0.005 °C at –20 °C ±0.005 °C at 25 °C	457 mm 18 in	Perfect for LIG thermometers with optional kit. Quiet operation.
7341	–45 °C to 150 °C	±0.005 °C at –40 °C ±0.005 °C at 25 °C	457 mm 18 in	Fast temperature changes. Access opening accommodates many thermometers.
7381	–80 °C to 110 °C	±0.006 °C at –80 °C ±0.005 °C at 0 °C	457 mm 18 in	Stability of ±0.006 °C or better over full range. Compatible with MET/TEMP II software. Low temperature bath
Standard size calibration baths: Low and high temperature
Model	Range	Stability	Depth	Features
7060	–60 °C to 110 °C	±0.0025 °C at –60 °C ±0.0015 °C at 25 °C	305 mm 12 in	Reaches –60 °C with standard refrigeration.
7080	–80 °C to 110 °C	±0.0025 °C at –80 °C ±0.0015 °C at 25 °C	305 mm 12 in	Best combination of stability and ultralow temperature bath.
7008	–5 °C to 110 °C	±0.0007 °C at 25 °C	331 mm 13 in	Large tank for larger mass immersion. Maintains standard resistors.
7011	–10 °C to 110 °C	±0.0008 °C at 0 °C ±0.0008 °C at 25 °C	305 mm 12 in	Self-contained refrigeration. Best-priced ultrastable, cooled bath.
7012	–10 °C to 110 °C	±0.0008 °C at 0 °C ±0.0008 °C at 25 °C	457 mm 18 in	Maintains up to 4 WTP cells for weeks. Large access: 162 x 292 mm (6.3 in x 11.5 in).
7037	–40 °C to 110 °C	±0.002 °C at –40 °C ±0.0015 °C at 25 °C	457 mm 18 in	Lowest-temperature deep-well bath. Mercury cell maintenance bath.
7040	–40 °C to 110 °C	±0.002 °C at –40 °C ±0.0015 °C at 25 °C	305 mm 12 in	Self-contained single-stage refrigeration. Digital controller.
6020	40 °C to 300 °C	±0.001 °C at 40 °C ±0.005 °C at 300 °C	305 mm 12 in	Broad range to 300 °C. Optional RS-232 and IEEE-488 interface.
6022	40 °C to 300 °C	±0.001 °C at 40 °C ±0.005 °C at 300 °C	464 mm 18.25 in	Deep tank for SPRT or LIG thermometers. Optional fluid level adapter. High tempertures
6024	40 °C to 300 °C	±0.001 °C at 40 °C ±0.005 °C at 300 °C	337 mm 13.25 in	Larger access opening and tank size for higher throughput. High temperature bath
6050H	180 °C to 550 °C	±0.002 °C at 200 °C ±0.007 °C at 500 °C	305 mm 12 in	Better stability than sand baths. High temperature bath, low gradients.

Special application
Model	Range	Stability	Depth	Features
6054	50 °C to 300 °C	±0.003 °C at 100 °C ±0.005 °C at 300 °C	610 mm 24 in	Maintains constant fluid level.
6055	200 °C to 550 °C	±0.003 °C at 200 °C ±0.01 °C at 550 °C	432 mm 17 in	Includes LIG sighting channel. Very high temperature bath
7007	–5 °C to 110 °C	±0.001 °C at 0 °C ±0.003 °C at 100 °C	610 mm 24 in	Large, 7-inch-diameter working space.
7009	0 °C to 50 °C	±0.0007 °C at 25 °C	331 mm 13 in	Largest capacity with 4.8-cubic foot (167-liter) working area and 0.7 mK stability.
7015	0 °C to 50 °C	±0.0007 °C at 25 °C	331 mm 13 in	Ultrastable for maintaining resistors. Large access and workspace. Splash- and spill-resistant lid.
7108	20 °C to 30 °C	±0.004 °C	203 mm 8 in	Peltier cooling means no compressor and quieter performance. Maintains standard resistors.
7911A2	0 °C	±0.002 °C	203 mm 8 in	Easy and affordable zero-point source for calibrating temperature sensors.
Other
Item		Description
Bath Accessories		Stands, rods, and clamps to suspend and support your probes and thermometers
Bath Fluids		Silicone oils, salt, and cold fluids in convenient, small quantities.
Rosemount Bath Controllers		Model 7900 controller designed by Hart integrates the features of Hart’s 2100 controller and can be used in place of the Rosemount 915 controller with Rosemount-designed baths.
Hart Bath Controllers		Model 2100 and 2200 controllers can be integrated with homemade baths or other heat sources to achieve performance levels approaching Hart baths.
Note: Look here for portable Micro-Baths.

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Calibration Bath Selection Guide

Compact calibration baths: low and high temperature

Standard size calibration baths: Low and high temperature

Special application

Other

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