Agilent/Keysight E2308A

The Agilent/Keysight E2308A is a thermistor temperature probe engineered for precision liquid temperature measurement across industrial and laboratory environments. Built around a 5 kΩ thermistor element at 25°C and housed in a stainless steel case, the probe delivers sub-degree accuracy with fast thermal response. The 1.5-inch probe tip and 36-inch lead assembly with dual banana plugs integrate directly with Keysight handheld DMMs and benchtop instruments.

– Technical Specifications

• Sensor Type: Thermistor (5 kΩ @ 25°C)
• Temperature Range: -40°C to +150°C (-40°F to +302°F)
• Accuracy: Typically <1°C (2°F); varies with instrument and temperature range
• Stability: <0.01°C over 10 months at 25°C
• Time Constant: 3 seconds typical in well-stirred water
• Dissipation Constant: 5.7 mW/°C in still water
• Maximum Isolation: 42 volts peak

– Key Features

• Stainless steel construction rated for -40°C to +150°C operation
• Compact 0.125-inch diameter probe tip optimized for immersion measurements
• 36-inch leads terminate in 0.75-inch dual banana plugs for direct meter connection
• Fast 3-second response time enables real-time monitoring
• Long-term stability of <0.01°C ensures reliable reference performance

– Typical Applications

• Liquid temperature measurement in process control and quality assurance
• Thermal validation during component testing
• Temperature profiling in calibration procedures
• Environmental monitoring in laboratory settings

– Compatibility & Integration

The E2308A pairs with Agilent handheld multimeters (971A, 972A, 973A, 974A), Agilent benchtop DMMs (3458A, 34401A with application software), and all Keysight handheld DMM platforms.