Guardian Monitoring®

Connect Transformer Monitoring to Intelligent Decision Making

SDMyers combines the latest in single- and multi-gas DGA monitoring hardware and software with proactive diagnostic expertise. Monitor the health of your equipment with exponentially more data than standard routine oil testing. And, when connected with Transformer Dashboard® for trend analysis and graphing, you can plan transformer maintenance and reduce your risk of transformer failure. 

Quick Features List:  

  • From critical fault detection to full DGA monitoring
  • Diagnose critical transformer faults as they happen
  • Virtually maintenance-free operation
  • Instant connectivity to Transformer Dashboard®
  • Rugged design for industrial conditions
Models

G1: Single-Gas Hydrogen Monitor

Hydrogen accompanies most known transformer faults, making this single-gas monitor an excellent indicator of developing issues within your transformer. If the monitor detects a significant spike in H₂, the fault can be determined through a full Dissolved Gas Analysis profile and a range of chemical, mechanical, and electrical tests.

  • When to Use: Ideal for budget-conscious monitoring of critical transformers in rugged industrial environments.
  • What It Detects: G1 detects hydrogen, moisture, and temperature. Hydrogen (H₂) accompanies most transformer faults, making this single-gas monitor an excellent early warning system. When the G1 detects a significant H₂ spike, follow up with full DGA testing to determine the specific fault type.

G5: Five-Gas Monitor

This five-gas monitor’s capability to detect methane, ethylene, and acetylene allows us to use industry-standard analytical tools to diagnose faults. Hydrogen is an essential component of any monitoring system because H₂ is present in most transformer faults. Carbon monoxide can indicate degradation of the paper insulation.

  • When to Use: Best for transformers requiring real-time fault identification using industry-standard analytical tools.
  • What It Detects: Methane, ethylene, and acetylene enable precise fault diagnosis. Hydrogen signals most faults, while carbon monoxide indicates paper insulation degradation.

G9: Nine-Gas Full DGA Monitor

A nine-gas monitor samples and measures all gases required for a full DGA, providing information on specific sub-faults. Elevated levels of carbon monoxide and carbon dioxide indicate cellulose degradation. High oxygen levels can accelerate the oxidation and decomposition of paper insulation. This monitor provides a full DGA profile of the gases inside the transformer at high frequency, offering more data for trend analysis.

  • When to Use: Mission-critical transformers requiring complete DGA profiles and maximum diagnostic insight.
  • What It Detects: All gases needed for full DGA analysis, including CO₂ for cellulose degradation and O₂ for oxidation monitoring. Provides sub-fault detail impossible with fewer sensors.
Features

01

Proven Reliability

  • Fit for rugged industrial environments
  • Virtually zero maintenance required
  • No consumables such as calibration or carrier gases
  • Suitable for a variety of applications:
    • Units requiring real-time fault identification
    • Critical transformers requiring utility-grade DGA technology
    • Mission-critical transformers requiring complete DGA profiles

02

Integrated Ecosystem

  • Secure and reliable cellular communication
  • Instant connectivity to Transformer Dashboard® for more in-depth trend analysis
  • Our engineers review your data and provide clear recommendations
  • Backed by 60+ years of historical data and expertise
  • Trusted by utilities and industrials for mission-critical equipment
Specifications

Choose the Right Monitor for Your Asset

From critical fault detection to full DGA analysis — we have solutions for every transformer.

G1

G5

G9

GENERAL
Gases detected *
1
1–5
1–9
Technology
NiPd (a)
PAS (b)
PAS (b)
Accuracy
±20%
±5–10%
±5%
Maintenance-free operation
Modular/ expandable
Multi-transformer capable
Price
$$
$$$
$$$$
DGA AND DIAGNOSTICS
Uses DGA diagnostic analytical tools
Detects critical faults
Detects specific faults
Detects sub-faults
Detects degradation of cellulose insulation
Prevents false alarms
DASHBOARD CONNECTIVITY
Transformer Dashboard® compatible

* 1-Hydrogen 2-Methane 3-Ethylene 4-Acetylene 5-Carbon monoxide 6-Ethane 7-Carbon dioxide 8-Oxygen 9-Nitrogen
(a)-NiPd-Solid State Nickel Palladium  (b)-PAS-Photoacoustic Spectroscopy

Videos

Guardian Monitoring® - Overview

View Monitoring Data in Transformer Dashboard®

What Are The Benefits Of Remote Fault-Gas Monitoring?

Downloads
Whitepaper: Remote Transformer Monitoring
Product Data Sheets

Now Is the Time to Monitor Your Transformer's Health

Request a quote for Guardian Monitoring, and we’ll recommend the right configuration for your transformers. Simply call us at 330-630-7000, or fill out the form to request a quote.

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