HT20 FOLYADÉKOK ÉS GÁZOK SZÁMÍTÓGÉPVEZÉRELT HŐVEZETÉSE
The Armfield Conductivity of Liquids and Gases unit has been specifically designed to enable students to measure and compare the thermal conductivities of various liquids and gases. It’s designed to facilitate quick and effective cleaning and to minimise thermal losses.
The HT20 / HT20C is backwards compatible with the HT10XC, so if you already own an HT10XC, you can easily expand the teaching potential with the addition of this accessory.
The unit comprises a cylindrical, electrically heated, nickel-plated aluminium core surrounded by a nickel-plated aluminium sleeve. The core and the sleeve are arranged so that a uniform narrow annular gap is created between the two parts, which is filled by the liquid or gas to be analysed.
The temperature on each side of the fluid is measured by thermocouples in the surface of the core and the sleeve. HT20C adds an electronic proportioning valve and flow meter to vary and measure the flow using HT10XC. Both versions incorporate an insulated jacket to minimise heat exchange from and to the atmosphere.
The fluid to be tested is injected into the annular gap between the heated core and the cooled jacket using a hypodermic syringe. Measurement of the temperature difference between the heated and cooled surfaces together with the power supplied to the heater (measurement of DC voltage and current) using HT10XC allows the conductivity of the fluid to be calculated. The surface area and thickness of the fluid sample remain constant during all tests.
Thickness of fluid sample: 0.5mm (Fixed by the annular gap)
Nominal heat transfer area: 1.225 x10-2 m2
Gas / liquid sample volume: 6.126ml
Maximum heater power: 200W at 24V
Maximum operating temperature: 90°C (limited by integral thermostat)
Software: Supplied with HT10XC
Software capabilities: Control and logging of HT20/HT20C
Software source code: Product / HT / HT10XC
Súly: 8 kg