ДВТ10Ex, Eddy-current sensor

Description

Proximity sensor in a cylindrical housing for non-contact measurement of displacement in range 0 – 2 mm at temperatures from –40 to +180 °C (explosionproof version 1ExibIIBT3 GbX).

Designed for use with the Converter ИП34Ex, Converter ИП36Ex, Comparator K22Ex in the channels for measuring rotor axial displacement, rotational speed, shaft bow or vibration.

Used together with the controllers of the "Vibrobit 300" and "Vibrobit 500" systems.

Key features:

cylindrical housing
high-temperature range
explosionproof version 1ExibIIBT3 GbX

Specifications

Measurement principle	eddy-current
Measured parameter	displacement; relative vibration displacement rotational frequency
Compatibility with transducers	Converter ИП34Ex; ИП36; ИП37 Comparator К22
Measurement range	0 – 2 mm (displacement); 0 – 500; 10 – 1000 µm (relative vibration displacement); 0 – 10 000 rpm rotational frequency
Frequency range	0.05 – 1500 Hz (relative vibration displacement)
Zero air gap	0.4±0.1 mm
Explosion protection	Yes
Type of explosion protection	Intrinsically safe electrical circuit "i"
Explosion protection marking	1Ex ib IIB T3 Gb X
Special explosion protection requirements	Connection via intrinsically safe barriers Installation in an explosion-proof converter box
Registry number	50585-12
Limits of permissible basic measurement error, %	±2.0 (displacement)
Calibration interval, years	2
Output type	-
Load resistance, Ohm (max)	-
Connection diagram (number of lines)	-
Power supply voltage range, VDC	-
Current consumption, (max) mA	-
Operating temperature range, °С	from −40 to +180
Housing index of protection according to GOST 14254	IP67
Resistance to external influencing factors GOST 30631–99	M5
Transducers connection type	РС7ТВ
Overall dimensions, mm	cylindrical housing M10*1
Service life, years (min.)	10
Warranty period, months	24
MTBF, hours	150 000

Applications

Measurement of the following parameters of steam, gas and hydraulic turbine units, turbocompressors, centrifugal pumps and other machines during their operation:

in combine with Converter ИП34Ех - displacement; rotor vibration displacement; rotor bow (eccentricity); rotor axial shift;
in combine with Komparator K22Ех - rotational frequency; proximity switch
in combine with Converter ИП36Ех - rotational frequency; proximity switch

The sensor can be used both independently and as part of the measurement channels of the plant's SCADA systems.