1. Overview
AN1930 vibration velocity Sensor is a inertial Sensor used to convert vibration signal into electric signal by magneto-electric induction principle. It is mainly composed of magnetic circuit system, inertial mass and spring damper. The Sensor housing is equipped with a magnet inside in a rigid manner, and inertial mass (coil block) is hung on the housing with spring element. In case of vibration within the working frequency range of the Sensor, coils and magnets make relative movement to cut magnetic lines and to produce induced voltage inside the coils, and the voltage is directly proportional to the vibration velocity.
2. Functions
● The measured object is housing vibration of rotating machinery bearing seat in vertical and horizontal, directions (housing/bearing vibration);
● Output signal is directly proportional to vibration velocity, and application fields of high frequency, intermediate frequency and low frequency can be taken into account;
3. Characteristics
● Built-in high-performance components ensure the stability of output signal in long-term use and strong environmental disturbance resistance;
● Power supply is not required, which is more applicable for use in severe environment with smoke, oil & gas, dust, etc. Waterproof type can be installed in the open air.
4. Application
Monitoring of housing vibration of various large rotating machinery (steam turbine, fan, pump, compressor, centrifugal machine, hydraulic turbine, etc.)
5. Technical Specifications
● Measurement range:
Max. measurable displacement: 2000μm (Pk - Pk) (0～-3dB)
Frequency range Standard type: 10~1000hz; low frequency type: 5~1000hz
● Installation direction:
fixed surface of Sensor in a lower place (0°)
5Hz vertical type: 0°±2.5°;
5Hz horizontal type: 90°±2.5°;
10Hz general type: 0°±100°;
● Output sensitivity:
20m V/mm /S ±5%；（500mV/in/sec±5％）Test at the frequency of 80Hz and the velocity of 10mm/s; 300m (1000 feet) field wiring.
● Electrical characteristics:
Output DC resistance: ≤1KΩ
Insulation resistance: ≥2MΩ
Output non-linearity: ≤3%
Transverse sensitivity ratio: ≤5%
● Signal output:
Two-pin aviation plug: 1# pin (red), 2# pin (white)
● Physical characteristics:
Overall dimension: Ф1.6in ×4 in Ф41×102mm
Weight: 500g (excluding cable)
● Environmental limitations:
Service temperature: -30℃~+120℃ (-22oF~+248 oF)
Humidity: 0 ~ 95% (non-condensing) ,dust and moisture prevention.
● Reference standards
● Executive standards
The United States Petroleum Association Standard: API 670
Safety certificate: CE;
Protection level: IP65;
Explosive-proof grade: ATEX: Ⅱ2G ExdⅡCT4/BT4
Anti-electromagnetic interference: EMC/LVD
Refer to EN55011\ EN 61010\ EN50081\EN50082.
6. Ordering information
General type: general installation; aviation plug goes out from top or side
AN1930-AXX-BXX-CXX-DXX-EXX-FXX
5Hz vertical type: vertical installation; aviation plug goes out from top
AN1930- AXX-BXX- CXX -01-00- -FXX
5Hz horizontal type: horizontal installation; aviation plug goes out from side
AN1930- AXX-BXX- CXX- 02-01 -FXX
Standard model:
General type: AN1930 - 00-05-01-00-00-00
Vertical type: AN1930 - 00-05-01-01-00-00
Horizontal type: AN1930 - 00-05-01-02-01-00
A: Spec. of mounting thread:
00 - M10×1 stud
02 - 1/4″-28UNF stud
XX - other
B: Cable length:
00 - 0m (no cable)
05—5m
XX - other
C: Cable armoring
00 – Unarmored cable
01 –Armored cable
D: Installation direction and minimum working frequency
00 - General type: 0°±100°/10Hz
01 - Vertical type: 0°±2.5°/5Hz
02 - Horizontal type: 90°±2.5°/5Hz
E: Aviation plug outgoing line
00 - out from top
01 - out from side
F: environmental limitations
00 - no requirement
01 - ATEX: Ⅱ1 G ExiaⅡC T4
Ordering accessories:
AN1930A: retaining screw: 1/4-28UNC to M10×1
AN1930B: retaining screw: 1/4-28UNC to M6
AN1930C-XX: unarmored cable of a few meters
AN1930D-XX: armored cable of a few meters