D-LX 100
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9
7.3. Setting the Amplification
In most cases it is unnecessary to set the amplification of the photo element signal. However, if signal
saturation should occur due to a very intense flame signal, the amplification hook switch can be
moved from position V2 to position V1. As mentioned above, this is not a feature of the D-LX 100 UL.
Switching to V1 reduces signal amplification by a factor of three.
The hook switch is mounted near the photo element. The housing must be removed in order to gain
access to it. The four Allen screws must be loosened and the electronics insert pulled from the
housing.
When putting the housing back together, the housing’s o-ring must be in the correct position, and the
cable bundle must lie inside the housing such that the electronics can be re-inserted without using
excessive force and without pinching the cable bundle. Once the housing is back in place, the Allen
screws must be screwed back in.
7.4. Adjusting the Flame Scanner D-LX 100…94Ex and D-LX 100…/95Ex
When operating a flame scanner in a hazardous location, an explosion-proof housing is required.
Given the special design of this housing, different steps must be followed when programming the
scanner.
!
Explosion Hazard!
Before opening the housing in any hazardous location (e.g. explosive
atmosphere), the flame scanner must be disconnected from its power
source.
Unless asked by the customer to do otherwise, the flame recognition threshold is set to 8 and the
amplification is set to V2 (high amplification; does not apply to the D-LX 100 UL). If changes are
necessary, the procedure outlined below must be followed:
1. The flame scanner must be disconnected from the power source. All cable connections must
therefore be disconnected.
2. The four M5x25 mm screws (4 mm Allen screws) must be unscrewed from the front part of the
housing.
3.
Carefully
separate the housing. Because of the inner gasket and narrow gaps, greater force is
required.
4. The flame scanner may now be programmed.
5. After the required settings have been made, the housing may be reassembled. One must be
careful not to pinch or damage the connection cable.
6. Screw in the four M5x25 mm screws (4 mm Allen screws).
7. Reconnect the cable.
D-LX 100
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0
9
0
D-ZS 087
D-ZS 087
V2
V1
M5x25 mm screw (4 mm Allen screw)
M5x25 mm screw (4 mm Allen screw)
(Fig. 5)
Adjusting an explosion-proof flame scanner
