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Kaye

CTR-25 Portable Liquid Calibration Bath

Ideally suited for verifications of up to 10 Kaye ValProbe or ValProbe RT Loggers, & various sized process sensors

Have questions? We're here to help!
Have questions? We're here to help!

The Kaye CTR-25 is an optimized Liquid calibration bath specifically designed for the calibration and verification of data loggers for the qualification of thermal processes in the GxP environment. This portable Liquid calibration bath offers maximum mobility, large bath capacity, fast heating and cooling rates, as well as optimized temperature stability and distribution. It is the ideal solution for calibrating and adjusting deployed temperature sensors, either in the calibration laboratory or directly on-site at the facility. The CTR-25 allows efficient verification of up to 10 Kaye ValProbe or ValProbe RT real-time data loggers, as well as the calibration of temperature sensors with various geometric dimensions.  

The integrated firmware of the CTR-25 Liquid Bath Calibrator allows both automatic verification of RT ValProbe loggers in combination with a traceable temperature standard (Kaye IRTD-400) and manual verification of standard Kaye ValProbe data loggers. The portable and robust liquid bath makes it easy for users to perform regular checks on their loggers, minimizing the risk of inaccurate temperature readings. Thanks to the wide temperature range of the CTR-25, the calibration bath is suitable for calibration or verification of temperature sensors for thermal validation or process sensors in numerous applications:

  • Steam-in-Place (SIP): 122 °C to 140 °C
  • Steam sterilization: 121 °C to 135 °C
  • Bioreactors: -10 °C to 100 °C
  • Cold storage: -25 °C
  • Generally, for all applications from -25°C to +140°C

User-Friendly and Low Maintenance: 

The CTR-25 Liquid Bath Calibrator features a clear color display that shows the current measurement parameters, including date, time, and the temperature of the bath medium. The transportation of the CTR-25 is facilitated by a sturdy carrying handle and a sealed stainless steel housing. An integrated overflow tube ensures that excess bath medium is safely directed into a catch container, while a drain tube simplifies the medium change or drainage for transport. The integrated ValProbe logger holder simplifies handling and provides a maximum capacity for parallel calibration of up to 10 Kaye data loggers.

  • Temperature range: -25 °C to 140 °C
  • High temperature stability/distribution: 0.01 °C / up to 0.02 °C
  • Fast heating and cooling rates
  • Simultaneous calibration/verification of up to 10 Kaye ValProbe RT real-time data loggers or standard Kaye ValProbe data loggers
  • Special holder for 10 Kaye data loggers and traceable Kaye IRTD-400 temperature standard
  • Compact, rugged, portable design: 20 kg/44 lbs
  • Compressor-free unit - operates with modern Peltier technology
  • Stainless steel housing
  • Universal power supply 110/240 V AC - 50/60 Hz
  • Large front display with intuitive controls
Range (at 25 °C ambient temperature)-25 °C to 140 °C (closed cover)
Accuracy (maximum permissible error)0.1 °C
Display resolution0.01 °
Stability0.01 °C
Typical uniformity0.02 °C
Repeatability0.04 °C
Typical heating time-25 °C to 25 °C: 35 minutes
25 °C to 140 °C: 55 minutes
Typical cooling time140 °C to 25 °C: 45 minutes
25 °C to –25 °C: 75 minutes
Typical settling time10 minutes
General Specifications
SizeHeight: 382 mm (15 in)
Width: 242 mm (9.5 in)
Depth: 400 mm (15.7 in)
Weight20 kg (44 lb)
Fluid volume2.5 liters (0.66 gallons)
Fluid working area75 mm x 75 mm (3 in x 3 in)
Maximum fluid depth154 mm (6.1 in)
Factory calibrationNVLAP accredited
calibration certificate included
Remote InterfaceRS-232 port. / USB 2.0 device port /
USB 2.0 host port
Supply Voltage115V - 50 or 60 Hz / 230V - 50 or 60Hz
Power ConsumptionMax 1150 W
  • Autoclave - Steam sterilization
  • Water spray sterilizers
  • Cleaning and disinfection devices
  • Fermenters
  • Steam-in-Place (SIP)
  • Refrigerators
  • Cold rooms
  • Stability chambers
  • Incubators
  • Isolators
  • Warehouses/Storage rooms
  • Stopper Washers
  • All applications between -25°C to +140

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