ISISAL İLETKENLİK CİHAZLARI

FOXA100 is a microprocessor based thermal conductivity instrument for testing in accordance with ASTM C 177 and ISO 8302. Minimum sample size is 65 mm diameter. The actual measuring area is 36.9 mm. The instrument accepts samples up to 150 mm square and up to 28 mm thick. If 150 mm square samples are used the sample acts as part of the guarding system by covering the rest of the plate. Samples smaller than 150 mm square require surround guards to cover the rest of the guard zone. The instrument produces conductivity results accurate to within 1% with 0.2% repeatability and 0.5% reproducibility. Both instrument plates utilize solid state heating/cooling and operate between 0°C and 80°C (32°F and 176°F). (Temperatures of 145°C are available in advanced version.)

The Main Heater Assembly is the heart of the Absolute System. It consists of three concentric heater systems in one. The central main heater where the actual conductivity measurement is made is 36.9 mm in diameter and surrounded by two independent concentric heater rings 12.5 mm wide. The power dissipated in the heater is measured to arrive at the conductivity. The temperature of the guard area rings is matched with the temperature of the main heater to minimize lateral heat flow. An additional guarding system of heating\cooling modules provides isothermal temperature over the rest of the 150 mm plate area.

A Heat Flow Meter is used to control temperature of the bottom surface plate to assure that all power generated in the center section of the main heater will be driven through the measuring area of the sample.

FOXA100 utilizes state of the art analog and digital electronics developed specifically for thermal conductivity testing instruments and refined over years of use in our FOX Heat Flow Meters. It is also very simple to operate. Step by step instructions are displayed on clear four line LCD display.

Plate spacing is automatically adjusted to the desired specimen thickness (accurate to within +/-0.025mm ( +/-0.001")). This accuracy is achieved through the use of a sophisticated digital plate position control system with readout in all four corners of the specimen.

Input power can be either 115V or 220V 50/60Hz user switchable at 700VA. Water at 18°C (65°F) or lower is also required. Instrument dimensions: 330 mm wide by 620 mm deep and 465 mm high (with Bell Jar).

Absolute Software