The thermal calibration system THERMOCAL from SCHWING Technologies calibrates and tests thermal switches and other sensors from 50 °C to 1000 °C with the highest precision:

  • Top accuracy over a large temperature range
  • Clean handling of the test specimens without oil or salt residues

Temperature calibration and test bath: THERMOCAL TH 050

Calibration and adjustment of temperature probes and thermal instruments are tasks requiring precision. Achieving the required accuracy requires measuring and testing devices that ensure high temperature uniformity over the entire working range. The waste gas-free fluidized bed calibration bath THERMOCAL TH 050 is superbly suited for this requirement. It works in a temperature range above room temperature up to 600 °C at a bath constancy with only minimal fluctuations of +/- 0.15 °C for short-term and +/- 0.3 °C for long-term applications. The useful retort volume is a good 5.3 liters (diameter 150 mm, depth 305 mm).

The THERMOCAL retort, a cylindrical container from stainless steel, as well as all required measuring and control devices are accommodated by a single compact housing. The retort is completed by a diffusion plate through which the compressed air is finely distributed. In addition, it is equipped with a dual jacket through which the fluidization air is routed and heated. The temperature measurement device is located in the lower area of the retort.

The devices are equipped with two separate heaters as standard. The external heater, consisting of two heating bands, allows quick heating according to the position of the pertaining selector switch. It also serves as back-up heater at bath temperatures above 350 °C. The control heater, designed as a tubular heating element, is located directly inside the retort. The temperature is controlled via an electronic controller with NiCrNi thermocouples with analog or digital setting as well as a deviation or direct indicator.

Quality calibration: THERMOCAL TH 500-12

At a retort volume of 36 liters (diameter 300 mm, depth 510 mm) the waste gas-free and environmentally friendly system THERMOCAL TH 500-12 offers approximately seven times the capacity of the TH 050 and is therefore suitable for the calibration of larger thermocouples.

Beyond the presented benefits of the THERMOCAL TH 050 the fluidized bed calibration bath THERMOCAL TH 500[1]works in temperature ranges up to 1000 °C. It achieves a bath constancy of +/- 1.0 °C as well as a short-term stability of +/- 0.9.

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