Power And Cable Requirements; Installation; Mechanical Installation - Dräger Flame 1500 Notice D'utilisation

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Mounting
3.3

Power and cable requirements

The flame detector requires a supply voltage of 18 - 32 Vdc at the input
terminals.
Cable selection
The installation location and local regulations and standards determine the
cable specification.
Cable to be used for the installation must be selected with a temperature rating
of greater than 25 °C above the maximum ambient temperature.
NOTICE
Risk of damage to the device!
The cable entry of the flame detector is fitted with an internal stop at the bottom
of the thread. An internal IP washer is fitted to the stop to maintain ingress
protection. This will result in threads of the cable gland being visible.
► Do not over-tighten.
The installation and local regulations and standards determine the overall cable
specification. This section specifies suitable cable characteristics to ensure
correct operation of the flame detector.
The table below shows the absolute maximums for cable lengths based on an
18 - 32 Vdc supply. Do not ground any cable shields at the detector housing.
Number of flame Maximum power
detectors (W)
One – heater on 12 W @ 24 Vdc
One – heater off 3 W @ 24 Vdc
Cross-sectional
American wire
2
gauge (AWG)
area (mm )
0.5 22
1 18
10
Maximum cable Maximum cable
length (m) with length (m) with
2 2
1.5 mm conduc- 2.5 mm conduc-
tors (12 Q/km) tors (7 6 Q/km)
500 780
2000 3000
Typical conductor resistance per
km (3280 ft) DC Q/km at
(approximately) 20 °C
36
19
Cross-sectional
American wire
2
gauge (AWG)
area (mm )
1.5 16
2.5 14
3.4

Installation

CAUTION
Risk of damage to the device!
The flame detector may be damaged by high voltage insulation tests and other
cable testing operations. It should only be installed after these tests are
complete. The detector electronics shall be protected from mechanical damage
and external sources of EMI such as X-rays, RFI and electrostatic discharge.
The detector should not face directly towards the sun.
► Do not drop or knock the enclosure as this may damage the detector
assembly.
► Only appropriately trained service personnel may open the enclosure.
Before installing the flame detector Dräger recommends to check the
mounting locations to ensure that no changes have been made during
construction that will affect detector coverage.
3.4.1

Mechanical installation

The mounting bracket allows the vertical orientation of the flame detector to be
adjusted from 0 to 45° and allows a horizontal rotation of up to 90°.
1. Fix the mounting bracket to a secure and stable mounting location using
8 mm fastenings (not supplied).
2. The flame detector can be mounted on both a horizontal and vertical
surface.
Instructions for use
Typical conductor resistance per
km (3280 ft) DC Q/km at
(approximately) 20 °C
12
7.6
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Flame 1500