Introduction of product | Santest Co., Ltd. that has magnetostrictive displacement transducer

Model L2DT Series

Linear inductance-L Displacement Transducer

L2DT series is a sensor of which inductance changes with displacement
of the copper sleeve covering a sensor probe.
The composition of a sensor probe is shown in the left figure.
10kHz sine wave excites the solenoid coil of the L2DT sensor.
It generates the short ring effect as a copper sleeve covers a
sensor probe.
The magnetic flux of the short ring effect makes decrease
inductance of solenoid coil.
When the copper sleeve covers the whole sensor probe,
the short ring effect is the strongest and the value of inductance
becomes the smallest.
Calculating the change of this inductance, it is possible to detect
the position of a copper sleeve.

Specifications

Effective stroke	100, 150, 200, 250, 300, 350, 400, 450, 500mm
Voltage output	0-10V(load Min.2kΩ)
Current output	4-20mA(load Max.500Ω)
Contact output	2 points Open collector 0.1A 30VDC
Alarm output	Open collector 0.1A 30VDC (Cable disconnection and sleeve drop)
Non-linearity	±0.5%FS TYP
Resolution	≦0.1%FS
Temp. drif	±500ppmFS/°C(sensor) ±150ppmFS/°C(controller)
Drive freq.	10kHz
Freq. response	100Hz
Power supply	+24VDC 150mA
Operating temp.	-40°C-+150°C(sensor) 0°C-+60°C(controller)
Storage temp.	-40°C-+150°C(sensor) -20°C-+60°C(controller)
Max. Pressure	21MPa(sensor rod)
Vibration	6G(sensor)
Shock	100G 6ms(sensor)
IP grade	IP67(sensor)
Cable	1m(Standard)(Option Max.20m)

Please use the cable as specified on order.
The cable extend　and cut needs the readjustment in the factory.
In case you connect cable, you are to connect braided wire correctly.

Model No.

①Effective stroke
　100, 150, 200, 250, 300, 350, 400, 450, 500mm

②Pigtail cable length
　unit of order:meter

③Total cable length
　unit of order:meter(Max.20m)
　(Pigtail cable②＋Extension cable⑥)

④Output
　A:0-10V
　B:4-20mA

⑤Direction of output(toward probe tip)
　D:output increase
　R:output decrease

⑥Extension cable length
　unit of order:meter

Dimensions

sensor		controller		connction

・Material；sensor head:Nickel-plated brass、rod:SS304
・Cable；0.3sq×2 heat-resistant shielded cable、diameter Φ5.6、sheath silicon rubber

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