Highly efficient validation of your pasteurization, sterilization and freeze-drying processes with the testo 191 HACCP data logger system

The 5 data loggers for temperature and pressure impress thanks to precision, flexibility and a genuine innovation: the measuring technology and battery are contained in two separate housings. You can change the loggers' batteries easily, securely and quickly. Even after the battery change, the loggers remain 100% tight. 

Your advantages at a glance 

  • Simply more intuitive: user-friendly software with guided measurement and documentation processes, along with 1-click report
  • Simply more secure: battery and measuring technology in two separate housings – for secure battery replacement and tightly sealed loggers
  • Simply faster: simultaneous configuration and readout of up to eight loggers via multifunction case 
  • Simply more flexible: intelligent battery concept enables different heights for versatile use in your process
Contact person

How can testo 191
support you?

Overview of the testo 191 data loggers

testo 191-T1 HACCP temperature
data logger

testo 191-T1 data logger
  • Measuring range: -50 to +140°C
  • Dimensions: 20 x 40 mm (small battery), 20 x 59 mm (large battery)
  • 1 probe (rigid): Ø 3 mm; length 25 mm

testo 191-T2 HACCP temperature
data logger

testo 191-T2 data logger
  • Measuring range: -50 … +140 °C
  • Dimensions: 20 x 40 mm (small battery), 20 x 59 mm (large battery)
  • 1 probe (rigid): Ø 3 mm; length 115 mm

testo 191-T3 HACCP temperature
data logger

testo 191-T3 data logger
  • Measuring range: -50 to +140°C
  • Dimensions: 20 x 45 mm (small battery), 20 x 63 mm (large battery)
  • 1 probe (flexible): Ø 1.5 mm; length 775 mm

testo 191-T4 HACCP temperature
data logger

testo 191-T4  data logger
  • Measuring range: -50 to +140°C
  • Dimensions: 20 x 53 mm (small battery), 20 x 70 mm (large battery)
  • 2 probes (flexible): Ø 1.5 mm; length 775 mm

testo 191-P1 HACCP pressure
data logger

testo 191-P1 data logger
  • Measuring range: 1 mbar to 4 bar abs.
  • Dimensions: 22 x 64 mm (small battery), 22 x 83 mm (large battery)