DWQZ-8111 Axial Displacement Sensor Eddy Current Probe

DWQZ-8111 Axial Displacement Sensor Eddy Current Probe

DWQZ eddy current sensor is a non-contact linearized measurement tool. It has the advantages of good long-term reliability, wide measurement range, high sensitivity, high resolution, fast response speed, strong anti-interference ability, and is not affected by oil and other media. Therefore, it has been widely used in online status monitoring and fault diagnosis of large rotating machinery.

DWQZseries11mmsensor
① Introduction
Regarding the axial displacement of the steam turbine(thrust)The situation requires reliable continuous detection and control. Among numerous measurement data, axial displacement occupies a dominant position, but it requires high technical requirements compared to sensors.
DWQZseries11mmThe sensor system is composed of independent components11mmProbe8200Extension cables and8311Composed of preamplifiers.4V/mmThe output of makes the linear range of system engineering reach4mmDue to its linear range, it can be used for slope expansion difference in steam turbines, piston rod displacement or descent in reciprocating compressors, and phase reference(Key phase)Tachometer and zero speed measurement. Excellent technical performance can directly replace imported similar products, andDWQZ 8mmSensors have the same properties.
② Technical specifications
Unless otherwise specified, the followingDWQZseries11mmThe technical specifications of the sensor are obtained under the following conditions.
ambient temperature:25℃
power supply:-24VDC
output load:10KΩ
Test piece material:45#steel
initial gap:1mm
system components:11mmprobe Extension cable11mmpreamplifier
input
power supply:requirement-22VDCto-26VDC, lower than-22VDCWorking below will result in a decrease in sensitivity and a narrowing of the linear region. Input noise-24VDCShifeng Peak20mV, current12mA.
On site connection:The length of the connecting wire between the preamplifier and the monitoring device is less than305Mi, it is recommended to use a three core shielded cable.
③ Product performance
linear range:4mm, approximately from1mm≈-2Vto5mm≈-18VLinear region.
sensitivity:At room temperature4mmWithin the linear region, it is4V/mm±5%.
nonlinear error:At room temperature4mmThe relative theoretical value within the linear region has an error of less than1%.
System temperature drift:Satisfying4V/mm±0Under certain conditions, probe temperature range-35~+120℃, the preamplifier and extension cable are in-35~+65Between ℃, the deviation from the theoretical value is less than ±5%.
frequency response:0~5KHz(-3dB).
Minimum detection surface:Satisfied with the plane Detection angle less than15Under the condition of degree, the minimum detection area is φ30mm.
installation distance:Recommended installation distance3mm, about-10VDCHere.

DWQZ-8111 Axial Displacement Sensor Eddy Current Probe