Gap displacement sensor overview
Miran Technology gap sensor can measure the gap or distance between two objects. Its principle is to use the differential transformer displacement sensor (LVDT) principle to determine the gap or distance between two objects by measuring the position change of the iron core in the coil.
Gap sensor features: large measurement range, high resolution, good repeatability, built-in coil without sliding contacts, long service life, external transmitter can output signals of 4-20mA, 0-5V, 0-10V, ± 5V, ± 10V, RS485.
Technical parameters of gap sensor :
Technical parameters of measuring head:
Measuring range | ±500um、±1mm |
Mechanical travel | 2.5mm |
Dynamometry | 0.6N±25% |
Resolution ratio | 0.1um |
Sampling frequency | 3K/s |
Zero adjustment range | ±30um adjustable |
Thermal drift | 0.25/10℃/(um/℃) |
Working temperature | -10℃~+60℃ |
Storage temperature | -20℃~+100℃ |
Technical parameters of the transmitter:
Supply | +12~30V DC |
Working Current | Voltage Output <10mA |
4-20mA 2 wires Output : 4~25mA | |
RS485 Output : 15-40mA | |
Dynamics | 50Hz |
Withstand shock | 250g/11ms |
Vibration tolerance | 10g/2KHZ |
Excitation | 3Vrms |
Excitation frequency | 5KHz(4 wires 2.5KHz) |
Temperature coefficient | Zero Point≤0.01%/℃ |
Sensitivity | ≤0.025%/℃ |
Working temperature | -25℃~+85℃ |
Storage temperature | -20℃~+100℃ |
Selection guidance for gap sensors:
Gap sensor wiring method:
Color definition of the four wire signal output cable of the measuring head:
Red - coil primary+
Black - Primary coil-
Green - coil secondary+
White - coil secondary-
Definition and explanation of external transmitter wiring:
Output voltage value of the DC stabilized power supply must be within the specified range of use
1. Color definition of current signal output cable:
Brown - Power supply (+) current input (+)
Blue - Power supply (-) Current output (-)
2. Definition of voltage signal output cable color:
Brown - Power supply (+)
Blue - Voltage output (+)
Black - Power supply (-) Signal output (-)
3. Definition of color for digital RS-485 signal output cable:
Brown - Power supply (+)
Black - Power supply (-)
Blue - Signal A
White - Signal B
Gap sensor installation dimensions:
Installation dimensions of measuring head:
Installation dimensions of transmitter: