Gastec PD-1B-2 Permeater

Description

The PD-1B-2 works by maintaining a permeation tube at a constant, user-defined temperature. As the chemical inside the tube permeates through its membrane at a fixed rate, the device’s internal pump passes a controlled flow of diluent air over the tube. This creates a known concentration of gas that can be delivered directly to a sensor.

The “2” in the model name typically signifies the inclusion of a specific power or pump configuration (often 220V/240V or an updated internal flow controller) compared to the standard PD-1B.

Brand

Gastec

Although, technology is always evolving, one demand on our products never changes: the demand for customer safety. Whenever we contribute to customer safety, we are presented with an opportunity to develop further.

GASTEC holds this corporate creed of safety and development in high esteem, as it strives to grow while always putting customer safety first.

Features

High Temperature Stability: Features a precision heating block that keeps the permeation tube within ±0.1°C of the setpoint, which is vital because permeation rates are highly temperature-dependent.
Portable Design: Housed in a rugged carrying case with a handle, making it suitable for both on-site field calibrations and laboratory use.
Dual Flow Control: Equipped with a flow meter and needle valve to precisely adjust the diluent air, allowing the user to “dial in” the exact ppm or ppb concentration needed.
Internal Air Source: Contains a built-in diaphragm pump and an activated carbon filter, ensuring the dilution air is pure and dry before it reaches the permeation tube.
Versatility: Compatible with a wide range of Gastec permeation tubes (P-series), covering hundreds of different gas types.

Specifications

Feature	Specification
Temperature Range	Ambient + 5°C to 50°C
Temperature Accuracy	±0.1°C
Flow Rate Range	0.2 to 2.0 L/min (Standard)
Warm-up Time	Approx. 30–60 minutes
Power Source	AC 100-240V or Internal Battery (depending on sub-model)
Dimensions	Approx. 250 x 150 x 200 mm
Weight	Approx. 3.5 kg (7.7 lbs)

Applications

The Gastec PD-1B-2 Permeater is suitable for demanding industrial and scientific conditions, including:
Laboratory research requiring highly reactive gas standards like ammonia or chlorine.
Industrial safety departments for the periodic calibration of multi-gas detection systems.
Environmental monitoring facilities focusing on low-concentration organic solvent detection.
Quality control in chemical manufacturing for verifying gas sensor accuracy.