Headquarter

PVTVM Inc
10200 W. Airport Blvd., Suite 170
Stafford TX 77477 USA
Phone: +1-713-830-7601
Fax: +1-832-827-3153
Email: sales@pvtvm.com
.
.

South& North America Areas

Vibravista LLC.
Master Distributor
Phone: +1-713-882-6677
Email: sales@vibravista.com
.
.

Europe, Middle East and Africa Areas

PVTVM- EMEA
Master Distributor
Eislerstrasse 28
91717 Wassertruedingen
Germany
Phone: +49-9832-65889
Fax: +49-9832-65890
Email: emea@pvtvm.com
.
.

China Areas

PVTVM QINGDAO
Room 2208, Huarun Building, N0.6-A Shandong Road,
Shinan District, Qingdao City, China 266000
Phone: +86-532-80771799
Fax: +86-532-86671799
Email: QD@pvtvm.cn
.
.

China Areas

PVTVM BEIJING
Nan Mo Fang Lu 37, Room 1906
Beijing, China 100022
Phone: +86-10-5272-5666
Phone: +86-10-5272-5667
Phone: +86-10-5272-5668
Phone: +86-10-5272-5669
Fax: +86-10-5272-5657
Email: china@pvtvm.cn
.
.

Location:Home>Products>MonitorsMonitors

DTM20 Seismic Vibration Distributed Transmitter Monitor

Download

DTM20 monitor can interface with almost any vibration sensor (accelerometer or velocity transducer). The DTM is fully digital and may be configured in the field via DTM-CFG software or come pre-configured from the factory.

Redundant power supplies

Redundant 4-20mA outputs

Dual dry-contact relay outputs

Trip multiply and Bypass

Product Detail

The DTM20 distributed Seismic vibration transmitter-monitor provides a simple and cost-effective solution for monitoring “balance-of-plant” equipment. The DTM’s smart design is extremely reliable with redundancy in power supply inputs, 4-20mA outputs and relay outputs, as well as, a Modbus communication port. The DTM20 monitor can interface with almost any vibration sensor (accelerometer or velocity transducer). The DTM is fully digital and may be configured in the field or come pre-configured from the factory.

Specifications



 



 

Electrical



 

Power:

Redundant. Accept dual power input

20-30VDC        @150mA

Isolation: 1000VDC  power to signal conditioner circuit



 

Frequency Response (-3dB):

Nominal Frequency:

2 ~ 3KHz

Low Frequency:

0.5 ~ 100Hz

High Frequency:

10 – 20KHz (peak)

 Filters:

                     Low-pass filter (field programmable):

8-pole (160 dB per decade, 48 dB per octave)

100Hz to 10kHz, field programmed by CFG

                     High-pass filter (factory setting):

2-pole (40 dB per decade, 12 dB per octave)

4 options (0.5Hz,2Hz,10Hz,100Hz) or custom



 

Piezo Sensor Interface:

Sensitivity:

100mV/g

100mV/in/sec

4mV/um

or any sensitivity specified

Current Source

Nominal                   4mA@24VDC



 

Seismic Velocity Sensor Interface:

Sensitivity:

User specified for any vibration sensor

Software programmable



 

Accuracy:

Typical +/-1% FS

Maximum +/-2% FS



 

Buffered Output:

Original vibration, un-filtered

Impedance:                            150Ω

Maximum cable distance:   300m (1000ft)

Sensitivity:                     same as the sensor

Local BNC connector

On line CM terminals



 

Overall Vibration output:

Up to two 4-20mA output

4-20mA(1):

Source. Output to controller.

Sharing signal ground

Maximum load resistance  500Ω

4-20mA(2):

Loop.  Loop powered by controller.

Galvanic isolation, 1000VDC

Power supply range: 16-30VDC

Maximum load resistance: 50*(Vs-16)

Where Vs is the loop power supply

Alarm Set point:

5 ~ 100% FS

Accuracy:

   ±0.1%.

Delay:           1~60s, according to 1 second increase, default is 3s.



 

Relays:

Seal:             Epoxy.

Capacity:     0.2A/240VAC,

0.4A/110VAC

2.0A/24VDC, resistive load

Relay type: SPTD

Isolation:      1000VDC



 

Push Buttons:

SET:    System on-site calibration and alarm setting

+ :        Adjustment increment

- : Adjustment decrement

LED Machine Condition Indicator:

OK:      System OK indication

ALT:    Vibration over Alert level

DNG:   Vibration over Danger level

BYP:    System in BYPASS

TRX:    Digital transmission active

RESET/BYPASS

Trip-Multiply

Modbus RTU

Digital Condition Monitoring

Physical



 

Dimension:

Height:                 75mm (2.95″)

see figure below

Weight:                0.9lb (0.4kg)



 

Environmental



 

Temperature:

Operation:   -40℃  ~ +85℃.

Storage:       -50℃ ~ +100℃.

Humidity:          90% non-condensing.

Case:                Aluminum cast (copper free)



 

© PVTVM All rights reserved.