Compressor controllers
Centrifugal, rotary screw, reciprocating, and master sequencing logic engineered to keep mixed fleets running on shared setpoints.
Technical services
Technical services for the whole powerhouse.
Pioneering PLC-based compressor controls since 1997, The Fischer Group engineers and integrates the full powerhouse (compressors, dryers, chillers, cooling towers, pumps and support equipment) under one ownership umbrella.
Engineering-based condition assessment
Measure first. Then decide.
Age and operating hours do not tell you how much life a centrifugal compressor has left. Four diagnostic disciplines, read independently and then together, give every machine a plain, evidence-backed verdict.
- 01 Vibration analysis Bearings, rotors, gears, alignment, looseness and imbalance, stage by stage. How it works
- 02 Thermal imaging Abnormal heat, stage-to-stage imbalance, bearing, cooling and lubrication problems. How it works
- 03 Oil analysis Wear metals, contamination, oxidation and moisture inside the machine. How it works
- 04 Performance & surge testing Pressure, flow, efficiency and how much operating margin is left. How it works
Beyond the machine
System studies for the whole air system.
Pressure complaints, energy waste and moisture rarely start in one compressor. These studies look across the compressors, controls, dryers, distribution and operating profile, and every finding routes straight into a rebuild, controls or parts scope.
- Flow, pressure and demand profilingWhere the air goes, when, and what the system really needs.
- Ultrasonic leak studiesLeaks found, tagged and ranked so the biggest losses are fixed first.
- Compressed air energy auditsEnergy waste quantified, with rebate-ready reporting.
- Air-quality testingMoisture, oil and particulate checks for sensitive processes.
Built on strong leadership and innovation
The equipment around the compressor decides how well it runs.
TFG Controls and Bone Dry Dryers were born from Norm Fischer's vision to close a clear gap in the industry, where existing solutions failed to deliver the reliability and efficiency modern operations demand. That set the standard TFG still works to today.
TFG Controls Run the room, not a collection of machines. PLC-based sequencing, surge protection, trending, alarms and SCADA integration built around the equipment already on the floor. Explore controls 
TFG Dryers · Bone Dry Stop using dried plant air to regenerate the dryer. The HE-HBP series uses blower-purged air, intelligent PLC control and a retrofit-ready footprint to reduce purge waste. See Bone Dry dryers 
Installation & project management One owner from removal to startup. Turnkey installation and commissioning of compressors, dryers, controls and support equipment, coordinated around production. Installation & projects 
Diagnostics & audits Measure the whole system before changing it. Vibration analysis, thermal imaging, performance and surge testing, pressure mapping, leak studies and energy audits. Diagnostics and system studies One control surface
Every machine in the room, on shared setpoints.
Powerhouse support equipment
Dryers, chillers, cooling towers, pumps, and filtering systems brought onto a single control surface for operators.
Hardware integration
Inlet guide vanes, blow-off valves, anti-surge valves, control valves, water valves, and condensate float switches.
Operator visibility
Touchscreen HMI, Ethernet/SCADA integration, real-time logging, historian-friendly trending, and remote programming.
The whole powerhouse, one plan
Four compressors. Dryers, controls and SCADA. One commissioning plan.
The Fischer Group replaced an aging compressed-air system with As New Refurbished Centrifugal Compressors, Bone Dry dryers, PLC controls and plant-wide visibility, then stayed through startup.
Read the project storyBring us the whole room, not just the compressor.
Controls, dryers, cooling and support equipment: tell us what is in the powerhouse and what it needs to do.