Sub-Station Transformers GaugesProtect your substation transformers with PSC OEM-precision gauge replacements. These monitoring devices play a crucial role in ensuring transformers are operating correctly and help identify issues to avoid costly downtime, including oil level, temperature, and pressure. Liquid level gauge monitors oil or fluid level inside substation transformers. The pressure vacuum gauge indicates the internal transformer tank pressure. Easy to install and built for long service life, our gauges are engineered for accuracy and reliability.Â