Temperature-resistant pumps can transfer air as well as neutral or aggressive gases at temperatures up to 240 °C. In order to prevent condensation of the measuring gas, the heated head pump types possess temperature-resistant pump head components and optional thermostatic or electronic temperature control.

Concept

The temperature-resistant and heated diaphragm vacuum pumps from KNF are based on a simple principal - an elastic diaphragm, ixed on its edge, moves up and down its central point by means of an eccentric. In this way the medium is transferred using automatic valves.

This pump is a temperature-resistant version up to 240 °C without a heater (for diaphragm gas pumps with pump head heater, see data sheet E 076).

There is a choice of pump drives ranging from a selection of AC motors to explosion-proof models. 

Feature

• Uncontaminated low of the media (oil-free operation)
• No maintenance required
• Easy access to the pump head
• Gas tight: Leakage < 6 x 10-3 mbar x l/s
   

Areas of use

Diaphragm pumps have become the standard in many analytical applications. Based on their design, they work without any lubrication.

Often hot gases need to be analyzed, and the gas must not be allowed to cool down when it is transferred from the source being checked, to the analyzer
as the constituent parts could condense out, leading to faulty results. To overcome these problems hot gases are pumped using diaphragm pumps with temperatureresistant pump head.