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Supporting equipment that extends what a particle counter can safely measure.
Particle Diluter ZR-G07
Portable diluter for high-concentration aerosols
The ZR-G07 Particle Diluter is a portable instrument for diluting high-concentration aerosols, bringing them within the detectable concentration range of the particle counter through precise dilution. The user can calculate the original aerosol concentration from the measured diluted concentration and the dilution ratio. The diluted aerosol also reduces contamination of the particle counter and extends its service life. It is applied to measure aerosols whose concentration exceeds the particle counter's measuring range.
High Pressure Diffuser ZR-G08
Protects particle counters when measuring in compressed air lines
The ZR-G08 high pressure diffuser is a protective device used to reduce pipeline pressure, protecting precision instruments such as particle counters. It connects between the particle counter and the compressed gas pipeline and reduces the pressure to a safe value close to atmospheric pressure, effectively preventing damage that may be caused by pressure shock in the particle counter. Available in two variants: ZR-G08A (100 L/min) and ZR-G08B (28.3 L/min).
Compare specifications
| Model | Dilution ratio | Adaptive flow | Particle size | Inlet/outlet diameter | Material | Aerosol | Dimensions | Weight | Power supply | Inlet pressure (G08A) | Outlet flow (G08A) | Inlet pressure (G08B) | Outlet flow (G08B) | Applicable gas | Operating temperature | Humidity |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ZR-G07 | 1:70–1:100 (at 0.3 μm) | 28.3 L/min | <50 μm | 14 mm | Stainless steel | PAO, DOP, Ondina etc. | 203 × 275 × 206 mm | Approx. 4 kg | None required | – | – | – | – | – | – | – |
| ZR-G08 | – | – | – | – | 304 stainless steel | – | 280 × 40 × 80 mm | Approx. 1.2 kg | – | 0.54–0.70 MPa | 100 L/min | 0.64–0.70 MPa | 28.3 L/min | Clean, dry, non-toxic inert gas | 10–35 °C | 30–80% RH |
Extending what a particle counter can measure
Every particle counter has a concentration range it can resolve and a pressure it can tolerate. Two situations in cleanroom testing fall outside those limits: aerosols concentrated enough to saturate the counter, and gas lines pressurised enough to damage it. The two accessories here solve one each.
ZR-G07 — dilution for high concentrations
Upstream of a filter during integrity testing, the aerosol concentration is deliberately high — typically far beyond what a particle counter can measure directly. The ZR-G07 dilutes the sample at a stable ratio of 1:70 to 1:100 at 0.3 μm, bringing the concentration into range. Because the ratio is known and stable, the original concentration is recovered by calculation.
It has an adaptive flow of 28.3 L/min, handles particles under 50 μm, and is built in stainless steel with 14 mm inlet and outlet. It works with PAO, DOP, Ondina and similar aerosols, and requires no power supply.
Dilution also protects the instrument: the counter is never exposed to the high concentrations that shorten its service life.
ZR-G08 — pressure reduction for gas lines
Measuring particle content inside a compressed air or gas line means the line pressure would reach the counter. The ZR-G08 connects between the line and the instrument and reduces the pressure to a safe value close to atmospheric.
It comes in two variants. The G08A accepts 0.54–0.70 MPa inlet pressure and delivers 100 L/min; the G08B accepts 0.64–0.70 MPa and delivers 28.3 L/min. Which you need is determined by the flow rate of the counter being connected.
Both are built in 304 stainless steel and are specified for clean, dry, non-toxic inert gas at 10–35 °C and 30–80% RH.
Frequently asked questions about accessories
When the aerosol concentration exceeds the particle counter's measurable range — typically when sampling upstream of a filter during integrity testing. The ZR-G07 dilutes at a stable 1:70 to 1:100 ratio at 0.3 μm so the concentration falls within range.
The dilution ratio is stable and known, which is the point: the original concentration is calculated back from it. An unstable ratio would make the measurement unusable.
Line pressure in a compressed air system is far above what a particle counter tolerates. The ZR-G08 sits between the line and the instrument and reduces the pressure to close to atmospheric, so the sample can be taken without damaging the counter.
Outlet flow. The G08A takes 0.54–0.70 MPa inlet and delivers 100 L/min; the G08B takes 0.64–0.70 MPa and delivers 28.3 L/min. Choose the one matching the flow rate of the particle counter you are connecting.
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