Transformer Thermometers and Wells
A common design methodology for transformers, regulators and other electrical equipment uses oil for dielectric insulation and cooling. Normal equipment operation and the environmental temperature cause changes in the oil temperature. The warmer oil will usually rise to the top of the tank. A temperature gauge well is normally mounted slightly below the 25 degree centigrade oil level. This submerges the well in the top of the oil where the warm oil accumulates. A temperature gauge is installed in the well to measure the changes in the temperature of the oil. Heartland HTG temperature gauges and wells provide a positive system to measure and indicate the oil temperature in transformers, regulators and other electrical equipment.
Various ANSI and industry standards specify temperature gauges and wells to measure and indicate the oil temperature in transformers, regulators and other electrical equipment. Heartland gauges and wells offer the following features:
- Corrosion resistant Stainless Steel connection with precision threads
- High impact resistant UV stabilized Polycarbonate lens
- Bright red maximum temperature pointer with magnetic reset knob
- Sensitive bi-metal helix to ensure reliable measurement with a 2% accuracy
- Solid one piece brass design well to resist dents, distortion, crushing or leakage
- Rapid response to temperature changes
- Precision machining for true fit and interchangeability
The Heartland HTG temperature gauges and wells meet or exceed these standards. They reliably measure and indicate the oil temperature either in an indoor or outdoor transformer, regulator and other electrical equipment.
| HTG-3132 | -20 to +120 degrees C, 3/8” – 18 NPT connection, magnetic reset knob, HTG-3900 well included |
| HTG-3142 | 0 to +120 degrees C, 3/8” – 18 NPT connection, magnetic reset knob, HTG-3900 well included |
| HTG-3900 | 3/8” – 18 NPT female connection, 7/8” Hex, 1/2” – 14 NPT male connections, |
| HTG-3147 | 0 to +120 degrees C, 7/8” – 14 UNF-2A connection, magnetic reset knob, HTG-3901 well included |
| HTG-3148 | 0 to +120 degrees C, 7/8” – 14 UNF-2A connection, magnetic reset knob, HTG-3902 well included |
| HTG-3901 | 7/8” – 14 UNF 2B female connection, 1” Hex, 1/2” – 14 NPT male connections |
| HTG-3902 | 7/8” – 14 UNF 2B female connection, 1” Hex, 3/4” – 14 NPT male connections |
Contact us at +1.813.855.5000 or Toll-Free in the U.S. and Canada at 1.800.957.3493 for more information about Heartland’s Transformer Thermometers and Wells.
Heartland Solutions, Inc. manufacturers an extensive line of Transformer Condition Monitors (TCMs) designed to monitor the temperature, fluid and gas in new and existing T&D transformers and other electrical equipment.