Permeater PD-1C

GASTEC Permeater PD-1C Gas Generator

GASTEC Permeater PD-1C Standard Gas Generator

Continuous. Stable. Precision Trace Gas Generation.

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.

0.2–10L/min Dilution Flow Control
±0.15°CChamber Temperature Stability
ppb–ppmTrace Concentration Dynamic Range
Cylinder-FreeEliminates High-Pressure Tanks

Continuous Stable Gas Output

Maintains uninterrupted calibration gas delivery with steady concentration over days and weeks.

Wide Dynamic Concentration Control

Generates trace concentrations from parts-per-billion (ppb) to parts-per-million (ppm) with ease.

Rigorous Physical Traceability

Concentration is verified directly from gravimetric tube weight loss and mass dilution flow rates.

Dual Generation Technologies

Supports both Teflon permeation tubes (for gases/liquids under vapor pressure) and diffusion tubes (for volatile solvents).

Precise Temperature Chamber

Integrated heating water bath maintains constant internal temperature to within ±0.15°C.

Touchscreen Flow Calculation

Digital user interface assists with dilution calculations, heating controls, and flow parameters.

Continuous Diffusion Principle. Engineered for Calibration Precision.

01

Filling & Temperature Setup

Fill diffusion tube with pure reagent liquid using syringe and place in constant-temperature chamber.

02

Controlled Steady Diffusion

Liquid evaporates and diffuses at a constant, highly predictable rate governed by tube physical geometry.

03

Continuous Calibration Stream

A metered flow of dilution carrier gas (air or nitrogen) sweeps over the tube, producing stable span gas.

GASTEC PD-1C Gas Generator
04

Thermal Regulated Core

High-precision heating controller eliminates ambient temperature fluctuations from affecting vapor rates.

05

Mass Flow Controller

Built-in mass flow meters guarantee precise 0.2 to 10 L/min dilution ratios.

06

Universal Multi-Gas Support

Generate SO₂, NO₂, Cl₂, Benzene, Toluene, H₂S, and hundreds of custom organic/inorganic gases.

Gas Detector Span Calibration

Calibrates fixed and portable gas detectors with fresh, non-degraded trace reactive gases.

Gas Chromatography & Analytical R&D

Supplies reliable multi-point calibration standards for GC-MS, FTIR, and photoacoustic spectrometers.

Continuous Ambient Air Stations

Performs daily automated span checks on governmental ambient air quality monitoring stations.

Odor & Semiconductor Cleanrooms

Generates sub-ppm levels of volatile odor compounds and corrosive wafer fab cleanroom contaminants.

Toxic Gas Sensor Testing

Evaluates sensor response time, cross-sensitivity, and long-term sensor drift under controlled flows.

Industrial Hygiene Equipment Audits

Validates colorimetric detector tubes and passive dosimeter badges against certified standard gas.

The Specs Speak for Themselves

Laboratory engineering specifications for the GASTEC PD-1C Permeater Gas Generator.

Did you know?

±0.15°C

temperature control precision ensures consistent vapor diffusion rates around the clock

Did you know?

10 Tubes

maximum internal chamber capacity allows multi-component calibration gas blending

Did you know?

Zero Waste

eliminates the short expiration dates and disposal hazards of high-pressure span gas cylinders

GASTEC Permeater PD-1C Technical Specifications

Dilution flow parameters, chamber capacities, electrical requirements, and physical dimensions.

Specification ParameterDetails
Product ModelGASTEC Permeater PD-1C Standard Gas Generator
Generation MethodsTeflon permeation tube & glass diffusion tube
Carrier / Dilution GasNitrogen (N₂) or clean compressed air
Dilution Flow Rate Range0.2 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 CapacityStandard tubes: 10 pcs / H-size: 5 pcs / Diffusion tubes: 4 pcs
Power Supply100–240 V AC, 50/60 Hz (Power consumption: approx. 160 W)
Dimensions (W × H × D)Approx. 250 × 340 × 315 mm
WeightApprox. 14 kg (without water)
Compliance StandardsEN 61010-1, EN 61326-1, EN IEC 63000 (RoHS)

Frequently Asked Questions

The PD-1C houses permeation tubes or diffusion tubes inside a precision temperature-controlled chamber. At steady temperature, volatile chemical compound permeates or diffuses at a constant rate into a controlled flow of carrier air or nitrogen.
Permeation tubes contain liquefied gas under pressure sealed in semi-permeable Teflon tubing. Diffusion tubes are glass capillaries filled with volatile liquid chemicals, allowing controlled evaporation through a precision orifice.
The concentration is calculated using the equation: C = (K × R) / F, where C is concentration in ppm, K is molar constant, R is gravimetric weight loss rate of the tube (µg/min), and F is dilution flow rate (L/min).
Reactive gases like NO₂, SO₂, Cl₂, and NH₃ degrade quickly inside gas cylinders. The Permeater generates fresh, highly stable trace gas continuously on demand, eliminating shelf-life degradation and dangerous cylinder storage.
The system requires an external supply of clean, dry air or high-purity nitrogen delivered at low pressure (0.1 to 0.3 MPa).