WZ type sight glasses for flameproof casings
Description
Application:
WZ sight glasses for flameproof enclosures are intended for use in flameproof enclosures in IT3S .. flameproof transformers, ROK .. switchgears and other devices and flameproof enclosures.
The sight glass is made of a polycarbonate lens made of Lexan Exell D material. The sight glass holder is made of steel. The sight glass is mounted in the frame by gluing with a special glue, and then the whole thing is pressed.
Technical parameters of WZ type sight glasses:
| Type | Data |
| Series: | WZA-90 |
| WZA-70 | |
| WZA-40 | |
| WZGA | |
| Working temperature: | -10oC to +90oC |
| Maximum instantaneous temperature: | +120oC |
| Relative humidity: | up to 95% |
| Work location: | any |
| Environment: | moderately chemically aggressive |
WZ type sight glasses:
| Type of sight glass | Outer diameter[mm] | Field of view diameter [mm] | Housing thickness [mm] | The thickness of the field of view [mm] |
| WZA-90 | Ø90.00-0.075 | Ø78.00 | 14.50 | 9.50 |
| WZA-70 | Ø70.00-0.075 | Ø58.00 | 14.50 | 9.50 |
| WZA-40 | Ø40.00-0.075 | Ø28.00 | 14.50 | 9.50 |
| WZGA | M38 x 1,5 | Ø24.00 | 14.50 | 9.50 |
Certificate
On November 15, 2007 WZ type of sight glasses has received an EC-type examination certificate: FTZÚ 07ATEX0246U
Physical-Technical Testing Institute (Fyzikálne technickz zkusebni ustav, s.p), Notified Body No. 1026 in accordance with Article 9 of Council Directive 94/9 / EC of 23 March 1994, certifies that the above-mentioned device or protective system has been checked for compliance with the basic safety and health requirements regarding the design, construction of the device and protective system intended for use in potentially explosive atmospheres specified in Annex II to this Directive.
The basic requirements of safety and health protection were implemented by meeting the requirements of the following standards:
- PN-EN 60079-0:2013
- PN-EN 60079-1:2010
The series of types of the WZ sight glasses is marked:
FTZÚ 07ATEX0246U
I M2 Ex d I Mb
1461
Download the catalog card:
