PD Acoustic Sensor | PD Localization | ASENS-2 | Rugged Monitoring
                     M O N I T  O R I N G  S I M P L I F I E D  
ASENS
Highly Accurate Acoustic 
Sensor for Partial Discharge 
Localization
Designed for Diverse Utility and Industry Applications
ASEN Modular design for partial discharge monitoring in 
electrical assets
S Partial Discharge activity is an indicator of increasing defects in 
insulation. PD is a discharge or spark that partially bridges the 
gap between conducting electrodes. The discharge may be in oil 
filled equipment or in a gas filled environment.
RM’s ASENS with acquisition system is specifically designed to 
detect partial discharge using portable measurement/ continuous 
monitoring methods and is also capable to locate PD position by 
studying the PD amplitude and phase delay of the acoustic waves 
propagating through the discharge activity. The location of the PD 
can be estimated by measuring the time of arrival of the acoustic 
wave, and PD localization is
ascertained by using sensors at multiple locations of assets. This makes acoustic emission 
sensing a preferable measuring tool in real time PD signal detection.
RM's advanced acoustic measurement has an additional advantage of possessing better- signal 
to noise ratio for real-time applications. To avoid the damage to high voltage equipment, 
detecting and locating PD is crucial both in industries and utilities. Acoustic waves are 
measured by ASENS, and the AE System will identify the real PD and their location based on 
ML/Time Difference of Arrival (TDOA) algorithm with the highest percentage of location 
accuracy to fault location.
The highly sensitive ASENS can be used for measurement of PD on Transformer Tanks, GIS, 
Reactors, Large Pressure Vessels, and for Leak Detection. Depending on the application and 
environment the sensors are available with three different resonant frequencies of 50 KHz, 80 
KHz and 150 KHz.
Benefits
PD localization with multiple sensors Significant time saving through 
High noise immunity for online fast localization of the fault
partial discharge detection Quick and easy application 
Integrated amplifier for better SNR Good return on investment
Features
Built in pre-amplifier Easy to use, light weight 
Narrow band resonant sensor with Plug and play connections 
highest signal to noise ratio Highly sensitive
Simple and rugged sensor
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ASEN
Applications S
Gas Insulated Switchgears 
Oil Filled Reactors Oil Filled and Gas Insulated Lines
Transformers
Technical Specifications
Gas Insulated Oil Filled Oil Filled 
Specifications Switchgear Transformer/ Reactors Transformers
(GIS)
Resonant Frequency 50 KHz 80 KHz 150 KHz
Frequency Range 15 KHz - 70 KHz 20 KHz - 180 KHz 60 KHz - 400 KHz
Sensitivity Peak >115 dB >70 dB >115 dB
Built in Preamplifier 40 dB 28 V - 40 dB 28 V
Size mm Φ30 x 57 Φ19 x 19.5 Φ30 x 36.5
Applicable Temperature °C -20 to 50°C -20 to 80°C -20 to 50°C
Housing Material SUS-504 SUS-304 SUS-304
Receiving Surface Material Ceramic Ceramic Ceramic
Protection Grade IP62 IP62 IP62
Connector Type BNC M5 BNC
Connector Position Side Face Side Face Side Face
Product Features Built in Pre-Amplifier Low Frequency Built in Pre-Amplifier
Ordering 
Code
Amplifier Width Sensor Material
PA: Pre-Amplifier (mm) 1 : Aluminimum 
NA: No Amplifier Length (mm) (Standar)
2 : Stainless Steel
Acoustic Sensor A s e n s -  z z y - x x x - w w w - v v -  u  t Sensor Connector
0 = TNC (Standar)
1 = BNC
Model of Cable Length 2 = N Type
Sensor 05 = 5 Meters
(Z = 0 to 9)
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DS0003R05_ASENS_EN_A4
Asset Monitoring :
Enterprise 
AComrpactible with Rugged Monitoring Enterprise Solution hitecture
UI UX
- Data Layer
- Analytics
- User Interface
- Custom Dashboards
- Reporting
- Email/SMS Notifications
RM EYE
Private Cloud (Customer Cloud), 
Rugged Monitoring Cloud
IEC 60870-104 ODBC 
IEC 61850 MODBUS 
FTP/SFTP DNP 3.0 
- XML, 
JSON Data Collection HTTPS 
- CSV, MQTT
COMTRA
DE Asset Data
Transformer 
Switchgear Power Cable - Offline Test Results - Historian Power Electronics 
Monitoring 
Monitoring Monitoring - Inspection Records - CMMS (Battery, UPS, 
System
System System - Name Plate - SCADA/ DCS VFD, Relay)
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One Solution for Multi-
Site Multi Asset 
Manoangei dtiofferriennt gindustrial assets on one 
platform without human intervention
Features
Advanced and Exceptional Reporting Built on well-established remote 
Technology with automated alerts and cloud-based monitoring 
technology
Modern remote monitoring solutions 
provide valuable insights to Multiple Assets at Simple user-friendly interface 
Multiple Sites on real-time providing
fast access to all the features and 
Robust asset health monitoring commands
with analysis and recommendations support 
asset effectiveness in addition to Quick and easy 1 step configuration 
maximizing equipment uptime setup
Establish a real time and consistent Encompasses a secure access to 
monitoring by getting the right data and configuration
information into right hands
Advanced asset algorithms based 
An e cient, reliable partial on standard ones with new ideas
discharge monitoring for all the 
assets Systematic fleet management and 
analysis
A detailed comprehensive DGA 
Extended multilingual support to handle 
Analysis Lifetime Consumption details. product inquires or troubleshoot 
problems proactively
Features Specific to PD Up System Level 
Monitoring RReeaplotirmtineg P IDn dAulasrtmria Sl yIostTem
Partial Discharge Monitoring and Analysis Get Alarm Notifications for Individual 
PRPD : Phase Resolve Partial Discharge Bushing Parameters Over Email, SMS and 
Push Notificaions
Partial Discharge Amplitude and Discharge 
Rate Trend Analysis Analytics on Online, and Offline 
Partial Discharge Test Data
Partial Discharge Fault Localization
Artificial Intelligence Based PD 
Fault Identification
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Why Customers Choose 
URM ssol?ution, the trusted monitoring solution for over 10000+ assets across 50+ 
countries. We are a leading High Value Electrical Asset Monitoring Company integrating 
fibre optic technology to the assets.
Attention to Details A plan for Success
It’s our attention to the small stuff, Our Customers are well satisfied with 
scheduling of timelines and keen project the advisory services that we offer to 
management that makes us stand out help them with best in class 
from the rest. technological performance and a long 
durable life.
Experts only Meeting Deadlines Money Matters 
We bring-in our diversified Work with us, and you’ll work We protect you 
experienced team with with seasoned professionals –  against currency 
over 100+ years of vigilant of deadlines, and fluctuation with
experience in Asset committed to exceeding competitive and 
Monitoring client expectations. fair market prices
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Rugged Monitoring About Rugged Monitoring
Services
Rugged Monitoring provides customization of Industry’s leading team of asset condition 
sensors, monitors & software. In addition we monitoring experts with 100+ years of 
offer on-site commissioning services, combined experience committed to 
maintenance contracts and technical support delivering customizable solutions for 
to all customers worldwide. challenging applications. We offer a range of 
reliable, high performance, customizable 
sensors and monitoring solutions that are 
immune to external influence.
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