M-Squared Packing Leak Detectors (PLD¬ģ) are inexpensive and reliable devices¬†providing visual (analog) and digital packing gland leak information for reciprocating compressors.

Packing Leak Detector
PLD with Zero-Leak configuration

Packing Leak Detectors:

  • Establish¬†real-time zero-leak baselines
  • Easily determine when & what-volume packing gland leaks
  • Diagnose over-lubrication
  • Diagnose improper packing material
  • Diagnose incorrect packing installation
  • Diagnose piston rod hardness or smoothness
  • Diagnose piston ring wear, rod drop
  • Diagnose leak rate on dynamic packing gland in static mode when compressors are shutdown loaded (without blowdown)
  • Reduce or eliminate¬†lost production
  • Limit fugitive methane emissions
  • Provide packing “health” data supporting proactive maintenance and servicing
  • Compatible for different gas types & multiple services
  • Return on investment (ROI)
  • 24-hour monitoring (dynamic or static state)

Basic model, anodized aluminum or 316 stainless steel, includes application-engineered mechanical pin.
Digitally-capable models require pressure & temperature

transmitters and PLC monitor.

PLD cutaway

As packing rings wear, gas migrates along piston rods to packing case vent cups. Gas flows through vent lines to connected Packing Leak Detectors (PLDs). As leaking pressure achieves specified thresholds, PLDs provide mechanical visual leak indications and send electronic signals via pressure and temperature transmitters to PLDs HMIs monitor panels (when configured). Monitored PLDs systems offer remote access capability for temperature and pressure data via MODBUS RTU RS232, RS485 or Ethernet Serial COMM. Data can be manipulated to meet requirements.

How the mechanical pin extends.

Packing Leak Detectors¬ģ eliminate lost product, revenue & emissions!

EPA field studies show average packing leak rates to be about 3 cubic feet per minute (cfm).  These data are optimistic (in our experience).

$300-$400 per month per one cylinder of methane may seem insignificant.  For average compressors (3 or more cylinders) and referencing the costs table (below), lost revenue and substantial atmospheric methane releases are inconsistent with investments to curtail emissions (compliance).

Packing Leak Detectors¬ģ eliminate lost product, revenue & emissions!

EPA field studies show average packing leak rates to be about 3 cubic feet per minute (cfm).  These data are optimistic (in our experience).

$300-$400 per month per one cylinder of methane may seem insignificant.  For average compressors (3 or more cylinders) and referencing the costs table (below), lost revenue and substantial atmospheric methane releases are inconsistent with investments to curtail emissions (compliance).

Rate/cfm Mcf/yr   $2/Mcf $3/Mcf $4/Mcf  
1 526   $1,052 $1,577 $2,102  
2 1,051   $2,201 $3,154 $4,205  
3 1,577   $3,154 $4,730 $6,307  
4 2,102   $4,205 $6,307 $8,409  
5 2,628   $5,256 $7,884 $10,512  
10 5,256   $10,512 $15,768 $21,024  
15 7,884   $15,768 $23,652 $31,536  
20 10,512   $21,024 $31,536 $42,048  
Packing Leak Detected revenue loss per year (per cylinder)

PLD benefits

  • Win-win for Federal & state government, EPA, industry & country
  • Domestically, using PLDs can reduce an (estimated) 65.1 Bcf/year of methane emissions from production, processing, transportation & storage sectors
  • Reducing methane-contamination of the atmosphere by one-half is equal to saving $45 billion in additional revenue for the producing companies and potential taxable dollars for the Federal & state governments
  • The pollution sector savings would be 18 million grams of CO2 equivalent or about 20 tons per year less pollution per cylinder (aggregate savings would be two million tons of CO2 equivalent per year)
  • With the US Senate Committee on Environment & Public Works approving the PLD for best practices and technology, EPA can endorse the PLD, recommending its use to the industry

Click PLD to view a short Packing Lead Detector presentation.