Eddy Current Displacement Linear Sensor From China

• Customization: Available
• Type: Industrial Eddy Current Sensor
• Output Signal Type: Digital Type
• Model NO.: PX 3900
• Production Process: Normal Wirewound
• Material: Stainless Steel
• Feature: Conductor
• IP Rating: IP68
• Certification: CE
• Customized: Customized
• Voltage Output Range: -1 to -20V
• Probe Body Material: AISI 304 Stainless Steel (Sst) or 316L
• System Length: Including Extension Cable: 5m or 9m
• Transport Package: Standard Package
• Specification: Shaft diameter: Minimum: 40mm (1.6in) Recommended:
• Trademark: Tekwize
• Origin: China
• Production Capacity: 50000 Piece/Year

Product Description

PX3905 eddy current sensor consists of a probe (housing), a preamplifier, a retaining nut, and a coaxial signal cable. The coil is sealed using a " two - shot " molding process, ensuring reliable operation in harsh environments. It outputs a voltage signal proportional to the distance between the probe tip and the surface of the conductor being measured . It can perform both static (displacement) and dynamic (vibration) measurements. It is primarily used to measure relative vibration, displacement, key phase, and speed of sliding bearings , as well as the swing of hydraulic turbines. It is suitable for industrial sites exposed to high temperatures.



The eddy current sensor fully complies with the American Petroleum Institute API670 standard.

 

• Probe diameter 5mm
• Measuring range 2mm
• Sensitivity 7.87V/mm (200mV/mil)
• Intrinsically safe explosion-proof
• System standard electrical lengths: 5m, 7m, 9m

Probe: Advanced mold technology ensures a secure connection between the probe tip and the probe body. A specially designed probe cable package securely connects the cable to the probe tip and can withstand a pull of 220 N (50 lb). The tip coil diameter determines the sensor's linear range and is typically used to classify and characterize probe models. Generally, the sensor's linear range is approximately half the probe tip diameter.

Coaxial signal cable: It uses high-temperature alloy double-layer shielded cable, which has certain corrosion resistance, oil resistance and waterproof functions, and can prevent oil or other liquids from leaking along the inside of the cable to the outside of the machine.

Proximitor: Can be mounted using a compact DIN rail or a traditional panel screw. Both mounting bases are electrically insulated, eliminating the need for a separate insulating plate. Multiple circuits are used to compensate for temperature drift, resulting in minimal drift coefficients. European Electromagnetic Compatibility (CE) certification is also available.

Coaxial Connectors: The probe, extension cable, and preamplifier all feature corrosion-resistant, gold-plated copper connectors. These connectors can be finger-tightened, and a specially designed mechanical lock prevents loosening. No special tools are required for installation or removal. The probe and extension cable can be ordered with optional connector protectors; these are recommended for installation in humid environments to provide the necessary environmental protection .

PX3325 Technical Specifications

All the following parameters are determined at a temperature of +18ºC~+27ºC(+64F~+80F)and a 10KΩ load .

Electrical characteristics

Working power supply: -24VDC, 10KΩ load, when the input supply voltage changes by 1V, the output voltage changes by <2mV
Frequency response: 0~2KHz ( -3dB)
Standard specimen material: 42CrMo (AISI 4140 ) Sensitivity: 0.787V/mm (20mV/mil) Voltage output range: about -1 to -20V
Linear range: 0.63mm (25mils) ~ 13.33mn (525mils) Non-linear error (typical value): <1%
Minimum target surface size: Φ 61mm (2.4 inches) (flat target surface) Ripple: ≤20mV
Temperature drift: ≤0.05%/ºC  Preamplifier output impedance: 50Ω
Proximitor field connection: 300 meters (1000 ft) allowed Isolation: Ground-insulated installation
Explosion-proof certification: Ex ia lIC T6 Ga
Electromagnetic compatibility: CE certified

Environmental restrictions

Working and storage temperature: probe - 50ºC~+180ºC
Cable -50ºC~+180ºC preamplifier -35 ºC~+85ºC
Relative humidity: When with connector protection, no immersion, 100% condensation

Mechanical properties

Probe tip material: Polyphenylene sulfide (PPS) / Polyetheretherketone (PEEK)
Probe housing material: AISI 304 stainless steel (SST) or 316L
Probe cable and extension cable: 75Ω three-dimensional axial FEP insulated cable Maximum rated pulling force: 330 N (75 lbf) from probe to housing lead wire
Probe lead wire to extension cable connector 270 (60 lbf)
Recommended probe housing torque: 7.5 Nm
Recommended joint to joint torque: 0.565 Nm System length: Including extension cable: 5m or 9m Cable armor material: 304 stainless steel
Proximitor housing material: aluminum
Coaxial connector material: gold-plated brass or gold-plated beryllium copper Minimum bending radius: 25.4mm (1in)
Weight: Probe varies according to probe length and size Cable 31g/m
Preamplifier 220g
Proximitor dimensions: see Figure 5 on page 8
 

PX3905 Technical Specifications

All the following parameters are determined at a temperature of +18 ºC ~ +27 ºC ( +64F ~ +80F ) and a 10KΩ load.

PX3905 5mm eddy current sensor upright probe

PX3905 5mm eddy current sensor reverse mount probe
 

Electrical characteristics

Working power supply: -24VDC, 10KΩ load, when the input supply voltage changes by 1V, the output voltage changes by <2mV
Frequency response: DC~10KHz( -3dB)
Standard specimen material: 42CrMo (AISI 4140) Sensitivity: 7.87V/mm (200mV/mil) Voltage output range: about -1 to -20V
Incremental sensitivity: 5m system, when measured in 0.25mm increments, including interchangeability error: 7.87V/mm±5%; 9m system, when measured in 0.25mm increments, including interchangeability error: 7.87V/mm±6.5%
Linear range: 0.25mm (10mils) ~ 2.3mm (90mils) Non-linear error (typical value): <0.75%
Minimum target surface size: 8.9mm (0.35in) in diameter
Recommended: 13mm (0.5in)
Minimum target axis size: diameter 30mm (1.2in) Ripple: ≤20mV
Temperature drift: ≤0.05%/ºC  Preamplifier output impedance: 50Ω
Field connection from the preamplifier to the monitor: 300 meters (1000 ft) allowed Isolation: Ground-insulated installation
Explosion-proof certification: Ex ia lIC T6 Ga
Electromagnetic compatibility: CE certified
 

Environmental restrictions

Working and storage temperature: probe - 50°C ~ +180°C
Cable -50ºC~+180ºC preamplifier -35 ºC~+85ºC
Relative humidity: When the connector is protected, no immersion, 100% condensation
 

Mechanical properties

Probe tip material: Polyphenylene sulfide (PPS) / Polyetheretherketone (PEEK) Probe body material: AISI 304 stainless steel (SST) or 316L
Probe cable and extension cable: 75Ω three-dimensional axial FEP insulated cable
Maximum rated pulling force: 220 N (50 lbf) from probe to housing lead wire, 220 N (50 lbf) from probe lead wire to extension cable connector
Recommended probe housing torque: 7.5 Nm
Recommended joint to joint torque: 0.565 Nm System length: Including extension cable: 5m or 9m Cable armor material: 304 stainless steel
Proximitor housing material: aluminum
Coaxial connector material: gold-plated brass or gold-plated beryllium copper Minimum bending radius: 25.4mm (1in)
Weight: Probe varies according to probe length and size Cable 29g/m
Preamplifier 220g
Proximitor dimensions: see Figure 6 on page 6