Low-temperature data-logger ValProbe

temperaturefor temperature traceabilityfor storage

Overview
The Kaye ValProbe Cryo Logger features a very thin, flexible tip and records temperatures from -85°C to +140°C. It is designed as a single solution for cryogenic chambers, lyophilizers, ultralow freezers and other deep temperature applications, and is also suitable for use in autoclaves and high-temperature processes. RTD sensing ensures high measurement accuracy. The revised design increases battery life by approximately three times compared with the previous model. The flexible sensor and compact stainless steel tip enable measurements in small vials and tight spaces. ValProbe meets FDA 21 CFR Part 11 requirements for electronic records/signatures and complies with EN 554 for saturated steam sterilization.

Features

• Complete logger temperature range: -85°C to +140°C
• Precision Platinum RTD sensing element for high accuracy
• Measurement accuracy: 0°C to 140°C ±0.1°C; -85°C to 0°C ±0.25°C
• Battery life: up to 3× improvement vs. standard ValProbe (new design)
• Flexible sensor: 1 m length, 1.8 mm diameter; stainless steel tip 25 mm × 2.2 mm
• Field-replaceable 3.6 V lithium thionyl chloride battery
• Sampling interval configurable from 1 second to 12 hours
• 10,000 samples retained in non-volatile EEPROM memory
• Factory calibrated (NVLAP / DAkkS accredited) with user calibration option
• Real-time clock accuracy: 15 seconds per 24 hours (0.0174%)

Applications

• Cryogenic vessels
• Freeze dryers (lyophilizers)
• Ultralow freezers and standard freezers
• Incubators
• Cold storage warehouses
• Sterilizers / Autoclaves

Specifications

• Sensing element: Precision Platinum RTD
• Measurement range & accuracy: 0°C to 140°C ±0.1°C; -85°C to 0°C ±0.25°C
• Operating environment: -85°C to +140°C; 0% to 100% RH, condensing; atmospheric pressure, non-pressurized
• Logger material: 316L stainless steel
• Logger base dimensions: 46 mm × 35 mm (1 13/16 × 1 3/8 in diameter)
• Battery: Field-replaceable 3.6 V lithium thionyl chloride
• Sampling rate: 1 s to 12 h (user configurable)
• Data storage: 10,000 samples in non-volatile EEPROM
• Calibration: Factory calibrated (NVLAP LAB CODE 200913-0 / DAkkS accredited); user calibration supported
• Real-time clock accuracy: 15 s per 24 h (0.0174%)
• Sensor/cable: Flexible Teflon cable; total sensor + cable length 100 cm (40" ); cable diameter 1.8 mm (0.07" )
• Stainless steel tip: length 25 mm (1"); diameter 2.2 mm (0.087" )
• Part number: XCFVP-40