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Compressed Gas Detecting

Compressed Gas Detecting










Mode1. Microorganism collection under equal pressure

Dedicated to collecting microorganism in compressed gas. With the automatic decompression system, the pressure conditions of the front-end and back-end of the sampling head are the same as sampling under atmospheric pressure.


Mode2.General high pressure diffuser

When the sampling device starts, the HPD decompress the compressed gas to the similar atmospheric pressure gas dynamically in real time, and delivers the gas to the sampling device. After the sampling device stops, the HPD closes the outlet automatically.

Interface Operations

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 - When doing atmospheric sampling,  pressurized sampling and cleaning, each step has its operation instruction

 - Select the gas type under pressurized sampling

Dual-Mode High Pressure Diffuser-Economic

Smaller and lighter for the same functionality


Application fields

This product is designed for industries that require critical standards of cleanliness, including  food and beverage, pharmaceutical, cosmetic and medical industries. Compressed gases with pressure range from 1 up to 10bar may be connected directly to the instrument .



   SpecificationDHPD DHPD-ECO
  Mode 1 (Sampling Before Decompression) 
  Flow rate10-100 LPM(with pressure) ±4%
  Sampling volumes20-9999L
  Sampling head dimensionsФ140mmx230(H)mm
  Sampling head weight1.5kg (3.3lbs)
  Petri dishФ90-100mm
  Mode 2 (Sampling After Decompression) 
  Flow rate≥2 LPM (atmospheric pressure)
  Common Specification
  Gas  type

Air, N2, CO2, Ar, O2 and other inert gases 

(only in the non-flammable and non-explosive area)

  Inlet relative pressure1-10bar 1-8bar
  Inlet diameterID:6.5mm,   OD:10mmID:   5mm, OD: 8mm
  Outlet diameterID:6mm, 8mm, 12mm, 14mm, 16mm, 20mm selectable or  silencer
  Dimensions (H×W×D)230x290x130mm (with foot mat)123x190x120mm (with foot mat)
  Weight8kg (17.6lbs)3.1kg (6.8lbs)
  External surfaceAnodized aluminum
  Power24 V±10% AC adapter
  Battery11.1V, 6700mAh rechargeable Lithium battery, running for over 6 hours
  Communication modeUSB
  Data storage500 sets of sampling records(Mode1:250 sets, Mode2: 250 sets)
  Display3.5" LCD touch screen
  LanguageChinese, English
  Calibration frequencyRecommend at least once a year 
  Max power consumption20W
  Operating conditionsTemperature: 5°C-30°C, relative humidity up to 80%
  Storage conditionsTemperature: 0°C-40°C, relative humidity up to 80%


 EN 61010-1:2010, EN 61326-2-2:2013,

 EN 61326-2-2:2013, EN 61000-6-1:2007,

 EN 61000-6-3:2007+A1

  Warranty2 years after activation

Ordering information



Order No.

Dual-Mode High Pressure Diffuser | DHPD



Dual-Mode High Pressure Diffuser-Economic | DHPD-ECO




Key words

High pressure diffuser, Compressed gas, Microbiological detection, Particle detection

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