Starting at $7,259.00
  • Usually ships in 2-3 weeks



  • Four channels for PRTs, thermistors and thermocouples
  • Displays eight user-selected data fields from any channel
  • Logs up to 8,000 readings with date and time stamps
  • Battery provides eight hours of continuous operation


The Fluke Calibration 1529 Chub-E4 (formerly Hart Scientific) readout features multiple channels, battery power, lab-quality accuracy, and the ability to read many different sensor types.


The 1529 Chub-E4 readout has four inputs for reading four different sensors simultaneously, and those inputs can be configured in any of three different ways according to your preference. Choose four channels of thermocouple inputs, four channels of PRT/thermistor inputs, or two channels of each. With the 1529 readout, reading thermocouples, PRTs, and thermistors accurately from the same device is no problem.

100-ohm, 25-ohm, or 10-ohm PRTs and RTDs are read using ITS-90, IEC-751 (DIN), or Callendar-Van Dusen conversion methods. Typical accuracies include ±0.004°C at –100°C and ±0.009°C at 100°C. Thermistor readings are converted by the 1529 Chub-E4 thermometer readout using the Steinhart-Hart polynomial or standard YSI-400 curve and are as accurate as ±0.0025°C at 25°C with resolution of 0.0001°.

Thermocouple inputs read all the common thermocouple types, including B, E, J, K, N, R, S, T, and Au-Pt, and allow you to choose between internal and external reference junction compensation. Typical accuracy for a type J thermocouple at 600°C is ±0.35°C.

PRTs and thermistors connect easily to the 1529 Chub-E4 readout using a patented mini DWF connectors, which accept bare wire, spade lug, or mini banana plug terminations. Thermocouples connect using standard or miniature terminations. Measurements are taken each second and can be taken simultaneously or sequentially. A special high-speed mode allows measurements on one channel to be taken at the rate of 10 per second.


The 1529 Chub-E4 readout can display measurements in °C, °F, K, ohms, or millivolts and allows users to choose temperature resolution from 0.01 to 0.0001.

Options available to the 1529 readout for display include: statistical functions such as averages, standard deviations, and spreads; probe information such as probe type and serial number; T1–T2 functions using inputs from any two channels; or utility functions such as the date, time, and battery power level. Up to 10 screen configurations can be saved for easy recall.


With battery power and memory to store up to 8,000 measurements (including date and time stamps) at user selected intervals, the 1529 readout has plenty of data logging capability. Store 100 individual measurements or any number of automatic log sessions (up to 8,000 readings), each tagged with an identifying session label. Fourteen different logging intervals may be selected, from 0.1 second to 60 minutes.

With Fluke Calibration 9935 LogWare II software, data may be quickly downloaded to your PC for complete graphical and statistical analysis. Separate log sessions may even be automatically downloaded to separate files based on session labels. With this software, the Chub-E4 readout can even be used for real-time data logging. Log four channels at once directly to your PC with virtually no limit to the number of data points you take. You can analyze data, set alarm events, and even set delayed start and stop times with the 1529 readout.