Blocking point tester No.2340

This tester is designed to measure blocking points of several types of paraffin wax concurrently. The operating principle is as follows. Specimens are prepared so that their surface contacts paraffin-coated surfaces. These specimens are mounted on the tester's aluminum blocking plate that is provided with thermal gradients, and then a rubber plate is placed on it, and the an iron rod is set for retention. The lowest temperature at which the area of
surface film adhesion has reached 50% is read and determined as the blocking point. This tester's blocking plate is provided with embedded temperature sensors at 10 locations for temperature control in order to achieve linear temperature distribution, which temperatures are recorded by the tester.

Blocking plate	aluminum alloy 305 mm wide (deep), 559 mm long, 15 mm thick
Heat gradient	10-point temperature measurement
Temperature range	room temperature to 70 ⁰C (*a constant temperature water tank with cooling system is necessary for use under room temperature)
Constant temperature water tank	capacity 17 r agitator (25 W)
Heater	right water tank 750 WX2, capacity 3-stages selectable left water tank 750 WX1, constant capacity
Temperature regulator	electronic, digital display
Temperature recorder	10-point dotting, scale 0 to 100 ⁰C
Accessory	sponge rubber pad, iron weight, one set each
Referential standard	ASTM D1465-80
Power source	100/110 VAC 50/60 Hz 25 A
Outer dimensions	1120x600x1120 mm
Instrument weight	about 180 kg