MAX66960 Analog Devices

MAX66960 -80C Temperature Data Logger with External Thermistor Probe General Description Benefits and Features The MAX66960 is a temperature data logger that is ide- Provides High-Quality Assessment of Storage ally suited to monitor and log the ambient temperature Temperature Profiles of enclosures that use dry ice as a coolant. It consists 16-Bit Temperature Measurements with Storage for 65,536 Time-Stamped Values of a precision logging module with a thermistor-based temperature probe that is permanently attached. In the Flexibility to Monitor and Datalog Long Duration Shipments with Short-Duration Time Intervals application the temperature probe is inserted into the dry ice cooled area of a container and the logger module is Rugged IP42 Construction Survives Harsh Environments placed in a container location isolated from the -78.5C Meets CE EMC Directive of EN 61326-1 extremes created by the dry ice. An attached USB cable Tested for Portable Electronic Devices for Use on and connector provide the PC connection for setup of a Airplanes per RTCA/DO-160G logging mission and download of mission data. Highly Configurable Options for Data Logging and Applications Security Dry Ice Refrigerated Cold-Chain Verification Optimize Logger Operation for Specific Shipment In-Transit Monitoring of Temperature-Sensitive Conditions Products Protect Settings and Data from Unauthorized Time-Stamped Recording of Time/Temperature Modification Excursions Easy to Start/Stop Logging of Missions Pushbuttons and LEDs for Control and Status Visual Indication of Logger and Battery Status Ordering Information appears at end of data sheet. 19-7460 Rev 1 1/17MAX66960 -80C Temperature Data Logger with External Thermistor Probe Absolute Maximum Ratings Operating Temperature Range Storage Temperature Range (Logging Module) ..-30C to +60C (Thermistor Probe) ...........................................-80C to +60C Operating Temperature Range (Logging Module) .............................................-30C to +60C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Specifications (Limits are 100% tested at T = +25C. Limits are guaranteed over the operating temperature range by design and characterization.) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS OPERATING CONDITONS Measuring Interval t 60s 273hrs MI T = +25C, MODULE Battery Life (Note 1) t 1 years BL t = 10 min MI Operating Temperature, T -30 +60 C MODULE Logging Module Operating Temperature, T -80 -10 C PROBE Thermistor Probe (Note 2) -80C < T -40C, PROBE -1.7 + 1.7 T = +25C MODULE Temperature Accuracy (Note 3) T C ERR -40C < T -10C, PROBE -2.5 +2.5 T = +25C MODULE Thermal Response Time t 5 s RESP Constant (Note 4) PHYSICAL DIMENSIONS Weight 83 g Length 69 mm Logger Module Dimensions Width 79 mm Height 25 mm Logger module to thermistor Thermistor Probe Length 1625 mm probe tip Note 1: USB-to-PC connection is to be limited to 5 years total connectivity over the batteries lifetime to prevent excessive back charging. Note 2: Higher temperature ranges can be read for the thermistor probe, but accuracy is guaranteed for this temperature range. Note 3: Temperature accuracy represents a 3 sigma value. Note 4: The time constant is the time required for a thermistor to react to a step change in temperature. For example, if exposed to a change from -50C to +50C, the 63% time constant would be the time required for the thermistor to indicate a tempera- ture at +13C. Maxim Integrated 2 www.maximintegrated.com