Reading Gas Mass Flow with the Gas Mass Flowmeters
The FMA1700A/1800A Series electronic gas mass flow meters measure the flow of a variety of gases ……...
The HPD II decreases the pressure of high purity, high-pressure gas to near atmospheric pressures, allowing for accurate sampling of aerosol particle size channels of 0.1 m and above by PMS particle counters with a volumetric sample flow rate of 1.0 CFM.
The HPD operates by diffusing some of the gas out of the system, allowing the particle counter’s flow-metering mechanism to function properly. The HPD II is compatible with PMS particle counters, includingAirNet, IsoAir, Lasair Pro, and Lasair III.
The HPD II successfully reduces the pressure of a gas line from 150 psi to atmospheric pressure and is compatible with non-toxic, nonflammable gases such as Clean Dry Air (CDA), nitrogen (N2), argon (Ar), and carbon dioxide (CO2).
Two configurations of HPD II are offered:
HPD II-100 for gas lines between 40 and 100 psi
HPD II-150 for gas lines between 75 and 150 psi
Source: Particle Measuring Systems
Particle Counter | CDA | N2 | Ar | CO2 | O2/He/Ne/H2 |
---|---|---|---|---|---|
Airnet | Y | Y | N | N | N |
Lasair III 110 | Y | Y | N | N | N |
Lasair III 310 | Y | Y | Y | N | N |
IsoAir 310P | Y | Y | Y | N | N |
IsoAir Pro-E/Plus | Y | Y | Y | Y | N |
Lasair Pro | Y | Y | Y | Y | N |
HPGP 101-C | Y | Y | Y | Y | Y |
Benefits
Two types for reducing high-pressure gas from 40 to 100 psi or 75 to 150 psi to atmospheric pressure
Able to measure particles as tiny as 0.1 µm in CDA, nitrogen, carbon dioxide, or argon when usedin combination with a Lasair II-110 or Lasair III-110 particle counter
Use with nitrogen (N2), carbon dioxide (CO2), argon (Ar), clean dry air (CDA), or other non-toxic inert gases (see table for compatible gases)
No external flow meters are needed
Using atmospheric pressure particle counters to monitor pressured gases economically
Features
Developed specifically to work with the 1.0 CFMaerosol particle counter
No moving parts to wear
Specifically intended to be used with the 1.0 CFM aerosol particle counter
The particle counter is not affected by interruptions in the gas supply
Stainless steel construction
Applications
AirNet: 310, 510
IsoAir: 310P, Pro-E, Pro-Plus
Lasair Pro 310
Lasair III: 110, 310, 310P
Specifications
Source: Particle Measuring Systems
. | . |
---|---|
Pressure | See additional table below |
Applicable Sample Flow Rate | 1.0 CFM |
Particle size range | 0.1 – 1.0 μm |
Environment | Temperature: 50 – 90 ºF (10 – 32 ºC). Humidity: Non-condensing. |
Material | Enclosure: 316 L stainless steel body, exhaust filterGaskets: 316 stainless steel, Buna-N O-rings |
Inlet fitting | Male 4-VCR fitting, #4 size, class 316 L stainless steel with Ruby orifice |
Exhaust fitting | 3/8” ID with O-ring seal |
Tubing length | 1 m (39.4 in) maximum |
Dimensions (h, w, d) | 5.1 x 9.8 x 5.5 in (13 x 25 x 14 cm) |
Weight | 5.8 lb (2.6 kg) |
Compatible instruments | See the Applications section on the previous page |
Flow Rate | CDA | Nitrogen | Argon | CO2 | |
---|---|---|---|---|---|
HPD II 100 | 1.0 CFM | 40-100 psi | 40-100 psi | 40-100 psi | 40-100 psi |
HPD II 150 | 1.0 CFM | 75 - 150 psi | 75 - 150 psi | 75 - 150 psi | 75 - 150 psi |
System components included: mounting brackets and exhaust tubing to particle counterNot included: particle counter, ISPs sample tubing, communications cables, PC, FacilityNet or Pharmaceutical Net software
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