CHF400 Series

Precision Twin Cell Sample Calorimeters

The ANTECH CHF400 Series Precision Twin Cell Sample Calorimeters feature a thermostatically controlled calorimeter body that houses two identical cylindrical or rectangular cells, one “sample” and one “reference”. Both cells have the same construction and the same heat transfer properties. The CHF400 Series are available in a variety of volume sizes:

Model CHF400-0780: 7.8 litre chamber

Model CHF400-1500: 15 litre chamber

Model CHF400-2000: 20 litre chamber

Model CHF400-2500: 25 litre chamber

Model CHF400-5300: 53 litre chamber

Model CHF400-6000: 60 litre chamber

Model CHF400-7200: 72 litre chamber



  • CHF400 Series calorimeters can be supplied with smaller or larger measurement chamber dimensions and volumes
  • Windows based menu driven software for ease of use
  • Software prediction algorithm estimates final sample power
  • Measurement accuracy typically less than 0.5% above 10 mW
  • Low underlying electrical noise, equivalent to 25 μW peak to peak
  • Long response time to changes in the ambient environment provides extreme stability of sample and reference cells
  • PC can be remotely controlled via Ethernet connection
  • Fully transportable


  • Twin cell heat-flow measurement for improved sensitivity
  • Thermostatically controlled outer calorimeter region - no water cooling
  • Electric sample for calibration verification (joule effect)
  • Optional built-in touch screen PC
  • Microwatt resolution
  • Sample power measurement range of below 25 μW >10 W
  • Description

    CHF Series Heat Flow Calorimeter

    The ANTECH CHF400 Series Heat Flow Calorimeter is a comprehensive non-destructive assay system for the high accuracy measurement of heat output. The system consists of a single trolley, onto which dual chambers are mounted, constructed of enclosing boxes of aluminium plate and insulation panels to provide a highly thermostatically controlled measurement region. A plug extraction carriage allows for the easy loading of samples into the system, with an ergonomic design and mode of operation. An operator PC is mounted on the end of the instrument trolley, along with an electronics enclosure containing all power and control electronics.

    Heat Flow Calorimeter Mode of Operation

    When a sample is added, an array of thermopile temperature sensors measure the difference between the temperature of the sample cell and the temperature of the reference cell across a common reference point.

    Differential measurements are made by measuring the temperature increase in the sample cell in comparison with that of the reference cell. The differences in temperature are directly related to the heat generation rate of the sample. Coupled with the large amount of thermal insulation, this method significantly reduces variations due to ambient drift and increases the sensitivity of the system. The high sensitivity of the systems provides the calorimeters with excellent low levels of detection.

    A local computer or optional built-in PC displays the temperature data of the two cells in real time and records the data for further analysis. Remote data analysis can be carried out via an Ethernet link. The software also predicts when the system will return to equilibrium and finish the measurement to enable time-efficient measurement planning and effectively reduce measurement time. The system is mounted in a self contained, fully mobile unit for easy transportation but can be securely locked in place for the duration of the measurement process.

  • Specifications

    Measurement Chamber Dimensions
    CHF400-0780; 250 mm H, 175 mm W 175 mm D
    CHF400-1500; 250 mm H, 250 mm W, 250 mm D
    CHF400-2000; 300 mm H, 290 mm W, 290 mm D
    CHF400-2500; 400 mm H, 275 mm W 275 mm D
    CHF400-5300; 500 mm H, 330 mm W, 330 mm D
    CHF400-6000; 500 mm H, 350 mm W, 350 mm D
    CHF400-7200; 500 mm H, 380 mm W, 380 mm D
    CHF400-0780; 9.8" H, 6.9" W, 6.9" D CHF400-1500; 6.9" H, 6.9" W, 6.9" D CHF400-2000; 11.8" H, 11.4" W, 11.4" D CHF400-2500; 15.7" H, 10.8" W, 10.8" D CHF400-5300; 19.7" H, 13.0" W, 13.0" D CHF400-6000; 19.7" H, 13.8" W, 13.8" D CHF400-7200; 19.7" H, 14.9" W, 14.9" D
    Measurement Chamber Volume
    CHF400-0780; 7.8 litres
    CHF400-1500; 15 litres
    CHF400-2000; 20 litres
    CHF400-2500; 25 litres
    CHF400-5300; 53 litres
    CHF400-6000; 60 litres
    CHF400-7200; 72 litres
    Sample Power Measurement Range
    CHF400-0780: 250 μW - 10 W
    CHF400-1500 to CHF400-6000: 500 μW - >10 W
    CHF400-7200: 1 mW - >10 W
    Detection Limit
    CHF400-0780: 100 μW
    CHF400-1500 to CHF400-2500: 200 μW
    CHF400-5300 to CHF400-6000: <500 μW
    CHF400-7200: 700 μW
    Heat-flow Calibration Constant
    CHF400-0780: 120 μW/mV
    CHF400-1500 to CHF400-2500: 160 μW/mV
    CHF400-5300 to CHF400-6000: 190 μW/mV
    CHF400-7200: 160 μW/mV
    Network Connection
    Analysis Software
    Microsoft Windows operating system
    MasterHFCal analysis software
    Power Supply
    110 or 230 VAC, 50 - 60 Hz
    CHF400-0780: 1470 mm H, 1230 mm W, 690 mm D
    CHF400-1500 to CHF400-2500: 1730 mm H, 1730 mm W, 750 mm D
    CHF400-5300 to CHF400-6000: 1730 mm H, 1727 mm W, 875 mm D
    CHF400-7200: 1760 mm H, 1800 mm W, 875 mm D
    CHF400-0780: 57.9" H, 48.4" W, 27.2" D CHF400-1500 to CHF400-2500: 68.1" H, 68.1" W, 29.5" D CHF400-5300 to CHF400-6000: 68.1" H, 68.1" W, 34.4" D CHF400-7200: 69.3" H, 70.8" W, 34.4" D
    CHF400-0780; 300 kg
    CHF400-1500; 550 kg
    CHF400-2000; 650 kg
    CHF400-2500; 750 kg
    CHF400-5300; 950 kg
    CHF400-6000; 950 kg
    CHF400-7200; 1,150 kg
    CHF400-0780; 660 lb CHF400-1500; 1,210 lb CHF400-2000; 1,430 lb CHF400-2500; 1,650 lb CHF400-5300; 2,090 lb CHF400-6000; 2,090 lb CHF400-7200; 2,530 lb