Explosion-proof scroll pump for various applications

The new pumps in the HiS­croll ATEX range are suit­able for han­dling poten­tial­ly explo­sive gas­es, as they meet the require­ments of the Euro­pean direc­tive ATEX II 3/-G Ex h IIC T4 Gc X +5 °C ≤ Ta ≤ +40 °C . Depend­ing on the appli­ca­tion require­ments, the ATEX direc­tives divide into dif­fer­ent cat­e­gories the con­di­tions under which the pumps may be used. The HiS­croll ATEX cor­re­sponds to equip­ment cat­e­go­ry 3G for the media-con­tact­ing area and ful­fills tem­per­a­ture class T4. All gas­es up to and includ­ing explo­sion group IIC can be pumped. Accord­ing­ly, even the pump­ing of hydro­gen is possible. 

With these fea­tures, the HiS­croll ATEX cov­ers many appli­ca­tion areas in the fields of ana­lyt­ics, indus­try or research & devel­op­ment. Explo­sion-proof devices are used in many areas, for exam­ple in indus­tri­al process­es such as the gen­er­a­tion and pump­ing of hydro­gen. How­ev­er, the HiS­croll ATEX also finds its appli­ca­tion in lab­o­ra­to­ries where media con­tain­ing sol­vents are pumped, which can gen­er­ate ignitable vapors. Cer­ti­fi­ca­tion is achieved by the HiS­croll ATEX hav­ing no igni­tion source for poten­tial­ly haz­ardous gas mixtures. 

Pfeif­fer Vac­u­um scroll pumps offer high pump­ing speed when pump­ing down from atmos­pher­ic pres­sure. The com­plete­ly oil-free and her­met­i­cal­ly sealed vac­u­um pumps achieve nom­i­nal pump­ing speeds of 6 to 20 m³/h, depend­ing on the version. 

A com­pact design and very qui­et, low-vibra­tion oper­a­tion are their spe­cial fea­tures (<47 dB[A], in stand-by mode <42 dB[A]). In addi­tion, a high lev­el of water vapor tol­er­ance is ensured; con­den­sa­tion in the vac­u­um pump is thus sus­tain­ably avoid­ed. The two-stage gas bal­last valve allows indi­vid­ual response to the respec­tive process requirements. 

The pumps can be eas­i­ly con­nect­ed to oth­er Pfeif­fer Vac­u­um prod­ucts, such as tur­bop­umps, via RS-485, Ether­Cat or ProfiNet, as well as oper­at­ed with a high­er-lev­el con­trol sys­tem or a PC. The intel­li­gent inter­face enables, among oth­er things, the use of speed con­trol mode or the inno­v­a­tive stand-by mode, which enables the pump to be oper­at­ed in a man­ner that is opti­mal­ly adapt­ed to the application.

This also min­i­mizes wear in the pump and extends main­te­nance cycles. The proven qual­i­ty with high-qual­i­ty and durable com­po­nents ensures a long ser­vice life, low­er oper­at­ing costs and a reduced envi­ron­men­tal impact. The easy main­te­nance of the pumps not only enables short ser­vice times, but also the high­est pos­si­ble avail­abil­i­ty. The built-in safe­ty valve and the self-reg­u­lat­ing oper­a­tion of the pump ensure safe use. 

The pow­er­ful yet effi­cient dri­ve fea­tures up to 15% high­er effi­cien­cy com­pared to con­ven­tion­al dri­ves. This enables max­i­mum per­for­mance at low­er tem­per­a­tures and thus sim­pler and more cost-effec­tive cool­ing of sys­tems and equipment.