Lumiglas Luminaire EX Illumination Sources Series USL 07-EX

Application:
This compact, powerful luminaire can be used for integral light/sight port (single flange version) or separate light and sight port (dual flange version) to illuminate the internals of boilers, tanks, bunkers, silos, mixers and other vessels and reactors which are normally closed, and visual flow indicators. This model is intended for use in Hazardous Areas. The unit is suitable for food processing.

Sight Glass Styles:
This powerful, compact size luminaire is designed to give glare free illumination in combination with Sight Glass styles as the following:

• bolted circular flanges, weld or bolt-on

• circular screwed flanges Series MV

• visual flow indicators

Size:
Depending on the fitting, this luminaire fits Sight Glasses DN 50 and larger.

Protection:
Dust/waterjet tight to IP 65/EN 60529.

Ambient Condition Operating Range:
Depending on wattage, this unit is approved for operation at ambient temperatures up to 60°C. Conformity certificate: PTB Nr. Ex-93.C. 2159. The unit is independent of internal vessel pressure or vacuum.

• EEx d "flame proof enclosure" acc. DIN EN 50 018/VDE 0170/0171, version 1 with "resin cast cable tail"

• EEx de "flame proof enclosure" and "increased safety" acc. DIN EN 50 019/VDE 0170/0171, version 2 with "terminal box".

Temperature class: up to T4 (depending on power intake)

Explosion class: IIc (all explosion classes)

Electric data, lamp sockets and lamps
According to PTB conformity certificate; supply voltage AC or DC depending on lamp type, see table.

Power supply:
The unit can be fitted with various halogen lamps

• without built-in transformer

  • supply 12 V; halogen lamp 50 W

  • supply 24 V; halogen lamp 50 W

  • supply 230 V; halogen lamp 50 W

• with built-in transformer

  • supply 230 V; halogen lamp 12V/50 W or 12V/35 W

  • supply 240 V; halogen lamp 12V/50 W or 12V/35 W

Power cable (version 1 only)
Pressure proof, resin cast power cable entry with "trumpet" style fitting, cable length can be selected between 6.5 ft. (Standard), 16 ft., 33 ft. or 65 ft. The cable-gland unit can be replaced on site, e.g. to install a longer cable.

Terminal box (version 2 only)
Cables of any selected length can be installed (see instructions page 3).

• installation set: stainless steel hinged bracket for Sight Glass fittings
  DN 50 to 125 (light port) or DN 125 to 200 (combined light/sight port)

• special claw spanner: for opening/tightening the lens ring

• power cable, automatic delay switch Lumiglas Timer

Lumiglas USL 07-Ex d with hinged bracket fastening, type 1 with power cable included

Lumiglas USL 07-Ex de, type 2 with terminal box.

General:
The unit is usually bolted with its hinged bracket to a Sight Glass fitting, such as the cover flange of a bolted circular Sight Glass or a visual flow indicator or the slotted cover nut of a screwed flange Sight Glass.

Lumiglas USL 07-Ex type fits the following flange sizes:

• circular flanges DIN 28120, DN 50 (3") and larger

• circular screwed flanges Bolt-on, DN 50 (3") and larger

• through flow indicators, DN 50 (3") and larger

• circular screwed flanges style Series MV, size DN 100 (5") and larger

Type 1, resin cast cable tail

The Luminaire is internally wired at the factory. The cable in the gland is cast into solid resin to provide a pressure tight cable entry. Connect the external ground terminal (1) to the main ground, and connect the supply cable leads to the main system by means of an explosion proof switch or terminal box. The cable should be suspended no more than 3 ft. from the cable entry.

Note: Never try to open the cable gland, as this would destroy the resin seal and eliminate the explosion protection of this luminaire. For cable replacement, always loosen the internal cable connections before unscrewing the cable entry gland.

Type 2, with terminal box

Open the terminal box cover. Loosen the cable tension relief screws (and with them the anti-rotation claw) and pass the cable through the gland so that the leads are just long enough for the bared ends to reach into the terminals. Retighten the screws and connect the bared cable lead ends securely to main terminal block 6. Connect the ground lead to internal safety ground terminal 5. The external ground terminal requires connection to suitable ground. Check gasket for good condition and put the cover back in place.

• switch off luminaire power supply

• wait for the cooling down time period as stated on the luminaire label

• loosen locking screw 2 to release tab 3

• use the special claw spanner to loosen the notched lens ring 4 and remove lens ring

• replace old halogen lamp (pull off 2-pin socket, or screw out of E 27 socket); bare fingers must not touch the bulb

• refit lens ring 4, tighten firmly with special claw spanner against ring sealing, so that tab 3 meets one of the lens rings notches

• tighten locking screw 2 and reconnect power

Lumiglas USL 07-Ex installed by a hinged bracket on the cover flange of a circular fitting DIN 28120, forming a combined sight/light port.