| Vibration transmitter 24VDC Input ; 4-20mA output
Metrix/ ST5484E-153-120-00
Vibration velocity transmitter.
VT9285B - 153-130-00
Measuring range: 0-50mm/s, RMS;
Installation bolts: 1/2NPT;
Danger level: NEPSI Exia IIC T4, IP66;
Connection mode: 4-20ma 2 aerial leads;
2-1500 hz
Shell material: 304SS; |
Explosion-proof junction box
EB5016-01.
Electrical interface: 3/4npt. |
The VT9285H is a HART smart vibration velocity transmitter. Based on the piezoelectric measurement
principle, the transmitter uses the digital integrated circuit and microprocessor technique for sensing the
rotating machinery vibration velocity. It combines the vibration velocity sensor and signal conditioner in
single stainless steel housing and offers you the most ideal solution for sensing rotating machinery
vibration velocity. The transmitter can output a 4�?0mA signal proportional to vibration velocity and
transmit the signal to PLC/DCS, monitor, or other indicating instrument either directly or by the HART
protocol. It is widely applied in rotating machinery such as fan, blower, centrifuge, compressor, pump
and motor, etc.
VT9285H is a self‐contained vibration velocity transmitter without any moving part. The full scale range
is marked on the label and can be modified by a HART communicator. The VT9285H transmitter has
notable anti‐electromagnetic interference features, so it can be mounted directly on the rotating
machinery case or the bearing housing.
2.Product features
Output 4�?0mA signal proportional to the vibration velocity
With HART communication protocol
Connect directly to PLC，DCS or other control system
Two wire power supply and hermaphroditic connection
Wide power supply range of 12�?0VDC
Optional mounting stud and wiring method
Designed digital circuit
Anti �?electromagnetic and RF interference
Built‐in surge protection
Optional high‐pass filter and low‐pass filter
100mv/g dynamic signal output
“slope‐restriction�?technology
3.Applications
Blower
Centrifuge
Compressor
Engine
Fan
Electrical generator
Motor
Pump
Turbine
Turbocharger
MODEL VT9285 two/three‐wire vibration velocity transmitter
VT9285 4�?0mA Vibration velocity transmitter
Overview
The VT9285 is a digital vibration velocity transmitter that
combines digital circuit technique and piezoelectric principle
perfectly. It adopts 24 bit ADC and DAC conversion circuit
greatly improving the measurement accuracy and response
time. Via software, acceleration signals is integral in frequency
domain, which increasing the linearity, linearizing the output
curve and enhancing the anti‐interference capability of the
transmitter. The VT9285 vibration velocity transmitter is
designed to measure vibration velocity of revolving machine. It
combines vibration sensor and signal processing circuit into a
stainless steel casing, which provides an ideal solution to
measure the level of the mechanical vibration. And it outputs a
4�?0mA signal proportional to the vibration velocity and
transmits the signal directly to the programmable controller
(PLC), distributed control system (DCS), monitor or other
monitoring instrument with 4�?0mA input signal.
VT9285B is powered by two‐wire loop power supply
VT9285C is powered by independent three‐wire power supply
VT9285 is a self‐contained vibration transmitter, without
moving parts and can be mounted directly on the case of
rotating machine or on the bear housing. A variety of Full scale
ranges, process mounting stud styles and several of electrical
interfaces is available and can be selected respectively.
Product Features
Output a 4�?0mA signal proportional to the vibration velocity
Connect directly to the PLC, DCS or other control system
Two‐wire or three‐wire
Optional different connection way and different mounting stud
thread
Optional high and low pass filter
“slope‐restriction�?technique
Applications
Blowers Centrifugal separators Fans
Compressors Engines Turbochargers
Motors Generators Pumps Turbines
Model selection guide
VT9285A �?BBB �?CDE �?FG�?H
□�□□□�□□□�□□‐□
A Power supply
B 2‐wire, loop powered
C 3‐wire
BBB Measuring range
Peak value
121 25.4mm/s�?.0ips），pk
122 12.7mm/s�?.5ips），pk
123 50mm/s�?.0ips），pk
124 125mm/s�?.0ips），pk
125 10mm/s�?.4ips），pk
126 20mm/s�?.8ips），pk
127 16mm/s�?.65ips），pk
128 75mm/s�?.0ips），pk
Effective value
(RMS)
151 25.4mm/s�?.0ips），rms
152 12.7mm/s�?.5ips），rms
153 50mm/s�?.0ips），rms
154 125mm/s�?.0ips），rms
155 10mm/s�?.4ips），rms
156 20mm/s�?.8ips），rms
157 16mm/s�?.65ips），rms
158 75mm/s�?.0ips），rms
C Mounting stud thread
0 Integral 1/4”NPT
1 Integral 1/2”NPT
2 3/8”�24UNF×1/2�?BR>3 M8×1�?2
4 M10×1.25�?2
5 1/4”�20UNC
6 1/4”�28UNF
7 M8×1.25�?2
8 M10×1�?2
9 M10×1.5�?2
10 M12*1.75�?2
11 M20*1.5�?2
x Custom, consult factory
D Hazard level
1 Safety zone CSA/NRTL/C，Class I�?BR>Div 2，Grps A�?B�?C & D
2 CSA/NRTL/C for Class
I,Div1,Grps‐B‐D&Class
II,Div1,Grps E‐G(only for flying
leads)
3 NEPSI, Ex ia IIC T4 intrinsically
safety
4 CSA, intrinsically safety�?BR>ClassI,GrpsA,B,C&D
5 IECEx, Ex ia IIC T4
6 NEPSI /IECEx, Ex d IIC T6(E=0�?)
7 ATEX, Ex d IIC T6
E Wiring
0 4�?0mA 2/3 flying leads,100mm
（D=0�?�?BR>1 4�?0mA dynamic signal�? flying
leads,100mm（D=0�?�?BR>2 4�?0mA 2/3pin terminal blocks
（D=0�?�?BR>3 4�?0mA dynamic signal�?‐pin
terminal blocks（D=0�?�?BR>4 4�?0mA 2/3pin,MIL connector
（D=1,3,4,5�?BR>5 4�?0mA shield cable,3m
（D=1,3,4,5�?BR>6 4�?0mA armored shield
cable,3m （D=1,3,4,5�?BR>F High‐pass filter
0 unfiltered�?Hz）standard
1 5Hz
2 10Hz
3 20H
4 50Hz
5 100Hz
6 200Hz
G Low‐pass filter
0 Unfiltered �?500Hz）standard
1 500Hz
2 1000Hz
3 2000Hz
H Case material
0 304SS（blank represents default�?BR>1 316SS
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