3520 Series

Designed and Built by Sciemetric, the 3520 Series Leak Test Module offers exciting new patented technology that provides high accuracy with extra fast cycle times. The 3520 brings leak tests in-line without creating a bottleneck, even when testing large parts.  

Testing Technologies

Multi-test Configurable for Pressure Decay or Mass Flow Test Requirements                

  • Pressure decay
  • Vacuum 
  • Flow
  • Occlusion test 
  • Volume measurement
  • Burst testing
  • Helium evacuate and fillSigPod Interface
  • Customizable pressure and flow sequencing for more demanding pressure and flow applications

Product Highlights

  • Tests parts with volumes ranging from less than 1 cc to 1,000,000 cc
  • Pressure measurement resolution – down to ±0.000,01 psi
  • Pressure control resolution – down to ±0.000,01 psi
  • Flow measurement – down to ±0.2% of full scale
  • Features temperature compensation: testing independent of part volume, atmospheric pressure or ambient temperature fluctuations
  • Ultra-fast fill for large parts
  • Fast pressure stabilization
  • Fast pass/fail decisions
  • Interfaces with SigPod  

Advanced Product Features

  • Compact design, particularly for high flow applications
  • Robust IP65 enclosure can be mounted in virtually any environment without the need for additional protective enclosures, significantly reducing system cost
  • Mount with rear integral brackets
  • All connections are on the front of the unit
  • M12 connectors for I/O
  • Fail-safe design ensures valves default exhaust state if power or air pressure is lost
  • Ethernet Connectivity provides ease of connection and management of the 3520 units
  • Digital Process Signature analysis software
  • Web-based setup and diagnostics
  • PID Tuning Assistant allows fast fill time at an accurate starting pressure set point



  • Dimensions (HxWxD): 117.8 x 264 x 210 mm
  • Operation temperature: 5-40 C
  • Operating humidity: 8-90%
  • Weight 10.2 kg (22.5 lbs)

Input power

  • Connector: M12 4 pin T-code plug
  • Supply: 24 V (22 to 26 VDC)
  • Ripple: <250 mV peak to peak
  • Power (Max): 40 W (including all accessories)
  • Power (Typ): 10 W (single channel leak test)
  • Power (Idle): 6 W
  • Inrush current: 5 A for 0.25 s


  • Connector: M12 4 pin D-code socket
  • Data rate: 100/10 Mbps

External valve interface

  • Connector: M12 8 pin A-code socket
  • Valves: (4×) 2.5 W at 24 V

Temperature input (×2)

  • Connector: M12 4 pin A-code socket
  • Sensor: 100 Ω Platinum RTD
  • Excitation: 1.25 mA
  • Range: 0 °C to 200 °C
  • Noise: <0.001 °C rms
  • Bandwidth: 10 H

All CTS instruments include password protected program and test result storage. Normal delivery for standard instruments is 2-4 weeks plus delivery time, specialized design deliveries will be quoted with additional time. Contact Us to select the proper standard test instrument for your application.

CTS has more than 30 years of experience perfecting high precision, repeatable and reliable instruments to optimize the most demanding leak test applications in any manufacturing environment. CTS application engineers can help you develop a custom solution specifically suited to your needs. See the “Custom Instrument” section for a brief overview of our capabilities.

You can trust CTS to provide you with the right solution to fit your specific testing requirement.