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Product details Model ZLT-LDQ: 
The ZLT Tracking Tester is a fully automatic instrument contained in its own cabinet to maximize the safety of the operator. Inside the well lit cabinet, a test specimen is placed on a glass plate and two platinum electrodes are lowered onto the top surface. A gauge block is supplied with the instrument to ensure the electrodes have the proper distance between them. The table height is easily adjustable to ensure the proper angle of the electrodes and height of drops. The rest of the test is controlled from outside the test chamber with the door closed. The voltage, limiting current, drip rate and number of drips are all set on the control panel. An operator should observe the test to see if a flame ignites. The instrument sounds an alarm if there is a tracking failure of at least two seconds.
SPECIFICATIONS

Input Power	220 V 50 Hz 3A or 110 V 60HZ  Optional
Power Consumption	650VA
Test Voltage	100~600V adjustable, displayed value: r.m.s
Test Current	Current limiting 1A±0.1A adjustable, displayed value:r.m.s, tolerance of 1.5%
Electrode Dimensions	width: 5mm±0.1mm, thickness: 2mm±0.1mm, length >12mm, end chisel-edge angle : 30°±2°,platinum.
Electrode Pressure	1.00N±0.05N
Dripping Nozzle	outer diameter: 0.9mm~1.2mm for solution A 0.9mm~3.45mm for solution B
Dripping Interval	0-99 seconds (adjustable),the time for 50 drops to fall on the specimen shall be (24.5±2)min
Heigh Drops	35mm±5mm
Dripping Weight	The mass of a sequence of 50 drops shall lie between 0.997g and 1.147g The mass of a sequence of 20 drops shall lie between 0.380g and 0.480g
Specimen Support Platform	Thickness≥4mm glass
Volume Of Chamber	>0.5m³, black interior
Outer Dimensions	W*D*H=1100mm*550mm*1100mm
Conform to standard	IEC60112,IEC60335-1,IEC60598-1

Includes:
Set of platinum electrodes
 A bottle of ammonium chloride
 A glass Platform
 Gauge Block - 4mm