Fluke / Hart Scientific 1529-R Chub-E4 Thermometer

The Fluke / Hart Scientific 1529-R Chub-E4 Thermometer is a multi-input digital temperature readout for industrial and laboratory applications requiring high-precision measurements across multiple sensor types. It accommodates Platinum Resistance Thermometers (PRTs), Resistance Temperature Detectors (RTDs), thermistors, and thermocouples in configurable four-channel arrangements: four PRT/Thermistor channels, four Thermocouple channels, or a mixed setup of two each. The instrument delivers exceptional accuracy - ±0.004 °C at –100 °C and ±0.009 °C at 100 °C for PRTs, and ±0.0025 °C at 25 °C for thermistors - making it ideal for calibration work and critical process monitoring.

Temperature is displayed in °C, °F, K, with resistance in ohms or voltage in millivolts.

Technical Specifications

• PRT/RTD: 100-ohm, 25-ohm, or 10-ohm nominal resistance; 2-, 3-, or 4-wire configurations


• Thermocouples: Types B, E, J, K, N, R, S, T, and Au-Pt; C and U types available via application note


• Thermistors: Full range support Connections


• PRT/Thermistor: Fluke Calibration mini DWF connectors accepting bare wire, spade lug, or mini banana plug terminations


• Thermocouple: Standard and miniature terminations


• Reference Junction Compensation: Selectable internal and external modes Accuracy (PRT)


• –100 °C: ±0.004 °C


• 0 °C: ±0.006 °C


• 100 °C: ±0.009 °C


• 200 °C: ±0.012 °C


• 400 °C: ±0.018 °C


• 600 °C: ±0.024 °C Accuracy (Thermistor)


• 0 °C and 25 °C: ±0.0025 °C Accuracy (Thermocouple Type J at 600 °C)


• ±0.35 °C (using internal reference junction compensation, excluding thermocouple error) Resolution & Speed


• Thermistor resolution: 0.0001 °


• Measurement interval: One reading per second in standard mode Conversion Methods


• PRT/RTD: ITS-90, IEC-751 (DIN), or Callendar-Van Dusen


• Thermistor: Steinhart-Hart polynomial or YSI-400 curve

Key Features

• Four independently configurable input channels


• Simultaneous multi-point temperature monitoring


• Data logging capability


• Battery operation for portable field use


• Easy-to-read display with multiple unit options

Typical Applications Calibration laboratories, process control systems, thermal testing, and equipment qualification requiring precise simultaneous temperature readings from diverse sensor types.

Compatibility & Integration Supports standard and proprietary thermocouple connector types. Mini DWF connectors integrate with Fluke Calibration ecosystem for streamlined laboratory workflows.