Specifications

Precision Calibration Baths
The Techne liquid calibration bath (LCB) series o er compact, accurate and reliable liquid baths for
temperature calibration of thermal sensors.
-35°C to 250°C
- Two di erent capacities available: 7 or 12 liters
- Temperature stability; ±0.005°C depending on choice of control unit
- Fully insulated bath for excellent heat retention
- Analog or digital temperature selection, depending on choice of control unit
- Includes cover, lid bridging plate, and cooling coil
When temperature calibration is required the compact liquid baths o ers excellent stability over
the entire temperature range. The LCBs can be also be used for external circulation to maintain
temperatures of samples in viscometers, photometers, refractometers, fermenters and other
reaction vessels.
All LCB systems o er exceptional thermal stability from -35ºC to 250°C. The baths are fully insulated
on all sides and base and are  tted with a cooling coil for connection to a cold water supply for use
at temperatures around ambient. The minimum temperature achievable is -35°C when a Flow Cooler
is added to the system.* For the full speci cations of the thermoregulators (see pages 15 and 16).
Each bath is supplied complete with lid, drain tap, carry handles , a cooling coil and hole with
bung to position a certi ed sensor.
The TechneWorks software package is available for the TU-20 thermoregulators free of charge from
www.techneusa.com (see page 10 for details).
Technical Speci cations
7 liter 12 liter
Working depth L x W x H (cm) 17.5 30
Dimensions L x W x H (cm) 35.1 x 26 x 23.3 35.1 x 26 x 35.8
Thermoregulator L x W x H (cm) 23.7 x 12.4 x 26 23.7 x 12.4 x 26
Bath opening (cm) 14 x 14 14 x 14
Ordering Information
Product
Code Description
3022300 LCB insulated liquid calibration bath with cooling coil, 7 liter capacity
3022400 LCB insulated liquid calibration bath with cooling coil, 12 liter capacity
*LCB baths  tted with a TU-20HT thermoregulator are not suitable for use with a Flow Cooler.
Liquid Calibration Bath LCB -7/12 LCB-7/12
Thermoregulator TU-20D TU-20HT
Bath Capacity 7 /12 liters 7 / 12 liters
Operating temperature range
1
-35 to 200ºC Ambient +10 to 250
Working temperature range
2
25 to 200ºC 30 to 250
Stability at -35°C (short term*) +/-0.015 N/A
Stability at 0°C (short term*) +/-0.020 N/A
Stability at 50°C (short term*) +/-0.005 +/-0.005
Stability at 100°C (short term*) +/-0.015 +/-0.015
Stability at 200°C (short term*) +/-0.024 +/-0.024
Stability at 250°C (short term*)  N/A  +/-0.040
Uniformity ºC (full range**) 0.008 0.008
Accuracy ºC (full range)  +/-0.5 +/-0.5
1) With an FC-500  ow cooler;
2) Ambient of 20°C
*Stability is over a 15 minute period.
**Two SPRT’s 3” apart in the working area of bath
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