Supply-Side Power & Flow
We log individual compressor power draw (kW, kVA, Power Factor) and compare delivered Free Air Delivery (m³/min) against ISO 1217 rating specs.
ISO 11011 & UNIDO Certified Energy Audits
Professional Compressed Air
Audits & Energy Assessments
Stop operating your air plant in the dark. We install precision loggers over 7 to 14 days to benchmark compressor efficiency, pinpoint pressure drops, and deliver UNIDO-backed system optimization reports.
ISO 11011Standardized assessment framework
7–14 DaysContinuous site data logging
UNIDOCertified energy auditing experts
System-wide diagnostics
What our compressed air energy audit evaluates
An independent compressed air audit evaluates how generation, treatment, distribution, and demand interact across your facility. We measure empirical data to ensure recommendations are based on factual energy consumption—not guesswork.
Pressure Profiling & Velocity
Pressure transmitters track pressure drops across filter banks, driers, and distribution mains to diagnose internal pipe velocity (IPV) bottlenecks.
Demand Breakdown & Baseline
We separate productive air demand from artificial demand and idle venting, establishing a reliable baseline for energy reduction initiatives.
Assessment Methodology & Site Protocol
Our audit team operates under strict air flow monitoring methods to ensure plant safety. All loggers, CT clamps, and pressure transducers are inspected and safely installed prior to logging.
- Confirm induction, permit and work area with site supervisor
- Complete DSTI, risk briefing and review task hazards
- Inspect flow meter, probe, clamps, and hand tools before use
- Prepare installation point safely and securely
- Install/position monitoring equipment (CT clamps, pressure sensors, flow meters) using approved methods
- Continuous data recording across production shifts and weekend shutdown states
- Remove equipment, clean area, and reinstate the work location upon completion
Internal Pipe Velocity (IPV) Industry Benchmarks
| Piping Network Segment | Recommended IPV Limit | Operational Impact if Exceeded |
|---|---|---|
| Compressor Room Discharge Manifolds | Less than 6 m/s | High backpressure causing premature compressor unloading |
| Main Distribution Ring Pipelines | Less than 10 m/s | Significant friction pressure drop between compressor house & plant |
| Equipment Drop-Off Lines | Less than 15 m/s | Pressure starvation at pneumatic actuators during peak cycles |
Audit Deliverable
An ISO 11011 audit report including continuous pressure and power profiles, compressor specific efficiency ratings (kW/m³/min), IPV velocity diagnostics, and prioritised optimization options.
Frequently asked questions
Compressed air audit FAQs
Will installing data loggers disrupt plant production?
No. Standard logging involves non-intrusive current transformers (CTs) on electrical feeds and quick-connect pressure transducers. Any flow meter installation is pre-planned during scheduled downtime.
What financial options are available for recommended upgrades?
We provide full CAPEX payback evaluations as well as amortised 5-year operational expenditure options. Industrial compressors also carry tax depreciation benefits (e.g. SARS wear-and-tear allowances over 4 years).
Why choose Fisher Installations over compressor sales companies?
Fisher Installations provides independent, brand-agnostic auditing. We measure what your plant actually needs rather than attempting to sell oversized replacement compressors.
Gain measured clarity