
GASTEC Permeater PD-1C Standard Gas Generator
The GASTEC Permeater PD-1C is a laboratory-grade standard gas generation instrument engineered for sensor calibration, gas analyzer verification, and environmental research. Using temperature-controlled Teflon permeation tubes and diffusion tubes, the PD-1C delivers a steady, reproducible stream of ultra-low concentration span gas using standard air or nitrogen, eliminating the costly shelf-life and handling hazards of compressed calibration cylinders.
Maintains uninterrupted calibration gas delivery with steady concentration over days and weeks.
Generates trace concentrations from parts-per-billion (ppb) to parts-per-million (ppm) with ease.
Concentration is verified directly from gravimetric tube weight loss and mass dilution flow rates.
Supports both Teflon permeation tubes (for gases/liquids under vapor pressure) and diffusion tubes (for volatile solvents).
Integrated heating water bath maintains constant internal temperature to within ±0.15°C.
Digital user interface assists with dilution calculations, heating controls, and flow parameters.
Fill diffusion tube with pure reagent liquid using syringe and place in constant-temperature chamber.
Liquid evaporates and diffuses at a constant, highly predictable rate governed by tube physical geometry.
A metered flow of dilution carrier gas (air or nitrogen) sweeps over the tube, producing stable span gas.

High-precision heating controller eliminates ambient temperature fluctuations from affecting vapor rates.
Built-in mass flow meters guarantee precise 0.2 to 10 L/min dilution ratios.
Generate SO₂, NO₂, Cl₂, Benzene, Toluene, H₂S, and hundreds of custom organic/inorganic gases.
Calibrates fixed and portable gas detectors with fresh, non-degraded trace reactive gases.
Supplies reliable multi-point calibration standards for GC-MS, FTIR, and photoacoustic spectrometers.
Performs daily automated span checks on governmental ambient air quality monitoring stations.
Generates sub-ppm levels of volatile odor compounds and corrosive wafer fab cleanroom contaminants.
Evaluates sensor response time, cross-sensitivity, and long-term sensor drift under controlled flows.
Validates colorimetric detector tubes and passive dosimeter badges against certified standard gas.
Laboratory engineering specifications for the GASTEC PD-1C Permeater Gas Generator.
temperature control precision ensures consistent vapor diffusion rates around the clock
maximum internal chamber capacity allows multi-component calibration gas blending
eliminates the short expiration dates and disposal hazards of high-pressure span gas cylinders
Dilution flow parameters, chamber capacities, electrical requirements, and physical dimensions.
| Specification Parameter | Details |
|---|---|
| Product Model | GASTEC Permeater PD-1C Standard Gas Generator |
| Generation Methods | Teflon permeation tube & glass diffusion tube |
| Carrier / Dilution Gas | Nitrogen (N₂) or clean compressed air |
| Dilution Flow Rate Range | 0.2 to 10 L/min |
| Flow Accuracy | ±3.7% (1–10 L/min), ±7% (0.4–1 L/min), ±13.2% (0.2–0.4 L/min) |
| Temperature Control Range | (Room Temp + 5°C) to 50°C (Stability: ±0.15°C) |
| Tube Chamber Capacity | Standard tubes: 10 pcs / H-size: 5 pcs / Diffusion tubes: 4 pcs |
| Power Supply | 100–240 V AC, 50/60 Hz (Power consumption: approx. 160 W) |
| Dimensions (W × H × D) | Approx. 250 × 340 × 315 mm |
| Weight | Approx. 14 kg (without water) |
| Compliance Standards | EN 61010-1, EN 61326-1, EN IEC 63000 (RoHS) |