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Pressure Sensor Node (SD-PSN-2)

The Pressure Sensor Node is capable of reproducing the function of a traditional wired pressure sensor in a much more convenient package which can be deployed and managed much more easily than wired sensors.

pressure sensor node

The KCF Pressure Sensor Node Consists of two distinct parts:

Pressure Transducer: this is a traditional industrial pressure transducer that would typically be hard-wired to a data collection box. Pressure transducers output either a voltage or a current proportional to the pressure their sensing element is exposed to. The pressure transducer must be plumbed into the fluid system, and exposed to the working fluid, e.g. via a "T" fitting in a pipe.

Wireless Pressure Sensor Node: KCF's pressure Sensor Node connects to the pressure transducer via a short cable and uses a wireless link to replace the traditional wired path back to the data collection unit, eliminating the need to run cables to every point where pressure is monitored. The wireless Node does not need to be exposed to the process fluid being measured. It can be mounted magnetically or with a threaded stud anywhere in the vicinity of the pressure transducer as allowed by the short transducer cable


SmartDiagnostics® can predict failure before it occurs, saving money spent on unnecessary replacements and extending machine life. At the same time, energy costs are reduced, as cleaner running machines are more efficient.


  • Cooling Towers
  • Pumping Stations
  • HVAC/R System Equipment
  • Paper & Metal Manufacturing
  • Power Plants
  • Food & Beverage Production Facilities


  • Allows wireless communication for instant results and efficient operation.
  • Robust industrial-grade design allows pressure sensor nodes to be reliably used in harsh industrial environments.
  • Very easy installation – no wires, no tools – locate, place and go.
  • Requires no batteries – extremely low power operation enables use with energy harvesters.

The SmartDiagnostics® System

Vibration Sensor Node role in Smart Diagnostics System
ConfigurationWireless node with cable whip to pressure transducer
Weight115g (4.1oz)
Enclosure MaterialAnodized aluminium and high strength polycarbonate
Connector Type4-pin 12x1mm threaded connector
Cable Length39in (1m)
Process fitting1/4" NPT Male
Storage Temperature-40° to 238°F (-40°to 120°C)
Min. Operating Temp.-4°F (-20°C)
Max. Operating Temp.
  • 230°F (110°C) surface @ 72°F (22°C)ambient
  • 212°F (100°C) surface @ 105°F (40°C)ambient
  • 167°F (75°C) surface @ 167°F (75°C)ambient
IP RatingIP65, dust-tight and impervious water jets
Impact ResistanceSurvives 5-ft drop onto concrete surface
RadioKCF Dart Wireless 2.4GHz ISM band, FCC ID#Z5ISD2
Range800ft (244m) line-of-sight (site survey recommended for installation)
AntennaSteerable antenna, providing 360° directional coverage. Optional RP-SMA connector for tethered antenna (model SD-PSN-2-A)
Power Source
  • 3 Volt lithium (CR123A or equivalent), or
  • One of KCF’s line of energy harvesters
Battery Life32-sample acquisition every:
  • 13 seconds - 1 year
  • 40 seconds - 3 years
  • 65 seconds - 5 years
Pressure Transducer typeKCF provides recommended pressure transducers matched to customer application. Please call with your application requirements
RangeRange available from 0-10,000 psi
Resolution0.03% of full scale
Noise Floor0.05% of full scale
Samples per Acquisition32-1600 configurable
Sampling Frequency64Hz - 8192Hz configurable
Operating Temperature-40° to 185°F (-40° to 85°C) Typical
Temperature Range-4° to 167°F (-20° to 75°C)
Resolution+/-1°F (+/-.05°C)

Battery Life

The PSN is designed to be very energy efficient so that it can operate continuously for many years when powered by a 3.6 Volt battery or virtually indefinitely on a harvester.

The actual amount of power consumed (and therefore the effective battery life) is dictated by two factors:

  1. The frequency at which the sensor sends a heartbeat ping to the PRN, and
  2. The frequency at which the sensor collects and transmits vibration data to the PRN.

The heartbeat ping takes very little energy so the primary driver of battery life is governed by the vibration data collection frequency which you configure based on your business needs. The graph below illustrates how battery life varies with changes to collection frequency assuming the sensor heartbeats every four seconds.

battery life graph

Battery Life vs. Vibration Data Collection Frequency

VSN Mechnical Drawing

Pressure Sensor Node Mechanical Drawing

Federal Communications Commission Compliance ? FCC Class B Device Statement The radio equipment in the SmartDiagnostics Receiver Nodes and SmartDiagnostics Sensor Nodes has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. Hazardous Location Information ? The SmartDiagnostics Vibration Sensor Node model SD-VSN-2N is certified to be suitable for use in Class I, Division 2, Groups A,B,C,D or non-hazardous locations only.

SmartDiagnostics® Gives Your Machines a Voice.