Data

• Supply voltage AC: 220V, 110V, 24V, 12V
• Sensitivity: adjustable in 3 increments (high .medium. low)
• Operating temperature: -20°C to +70°C
• Storage temperature: -40°C to +85°C
• Frequency range:  20 kHz to 170 kHz
• Reaction time: 100ms
• Loop inductance:  Ideal:80μH to 300μH(incl. conn. wiring) :  max:50μH to 500μH
• Loop connection: <5m optimal
• Loop connection wiring: Maximum length 200 meters,Twisted at least 20 times per meter

Loop Installation

The loop(heat-resisting Teflon wire)is normally buried in a parallelogram form gap. After the test, seal the gap with liquid pitch. 1 to 2 circles of loops should be added as compensation when there are metal things under the ground. And the inductance should be kept at 150-300uH.The lead time must be twisted together closely, so as to prevent the disturbance caused by shock. 

Connection Diagram