Dräger Polytron 8000 Serie Instrucciones De Uso página 11

– Unused openings must be closed with blind plugs. For the
required tightening torques for cable bushings, cable
glands, plugs and sensors, see 16.7 Tightening torques.
– For non-conduit installations, an approved cable gland
must be used (e.g., Hawke A501/421/A/¾ " NPT or
equivalent).
– WARNING: Only for conduit installations: To reduce the
risk of ignition of hazardous atmospheres, the conduit
must be sealed within 45 cm (18 ") of the enclosure.
– CAUTION: If the gas detector is connected to controllers,
the total response time may be delayed. The entire
measurement path must be taken into account (e.g.,
latency of the controller). Ensure that the required
response time is kept.
®
Polytron 8100 EC-specific:
– Recommended sensor orientation: Downwards (see
Figure C on the fold-out page).
®
Polytron 8200 CAT-specific:
– Preferred sensor orientation: Downwards (see Figure E on
the fold-out page). If the sensor inlet is protected against
mechanical damage and the ingress of dirt and water, any
orientation is permitted.
– For CSA-conform operation only:
The use of the optional splash guard (6812510) is
required for CSA approval.
®
Polytron 8310 IR-specific:
– Recommended sensor orientation: Downwards (see
Figure E on the fold-out page).
®
Polytron 87x0 IR-specific:
– The preferred orientation of the Dräger PIR 7x00 sensor
must be observed (see Figure F on the fold-out page).
Larger deviations and the use of the preassembled splash
guard will increase the response time (see PIR 7x00
instructions for use).
– Any other orientation is only permissible if the PIR 7x00 is
used without a splash guard, e.g., for use in ducts. If the
sensor is installed vertically, there is an increased risk of
deposits forming on the optical surfaces.
– The use of the preassembled splash guard is
recommended to protect the sensor from water and dust.
– If a splash guard (part number 6811911 or 6811912) is
used, the status lights must be arranged in a vertical line
and the Dräger logo on the splash guard must be
horizontal. A maximum deviation of ±30 degrees from the
horizontal position is permissible.
– Liquid and/or deposits on the optical surfaces of the PIR
7x00 may result in a warning or fault.
– For the explosion-proof version, using a spacer (part
number 6812617) when the instrument is mounted on a
wall or to a level surface is recommended.
Special conditions in accordance with EN/IEC 60079-1
– The threads for the flameproof / explosion-proof enclosure
do not conform to the minimum/maximum values indicated
in EN/IEC 60079-1. The threads must not be re-worked by
the user.
Instructions for use |
Dräger Polytron
®
8000 Series
4.1.1.2 Installation
The instrument can be mounted for measuring gases in
ambient air or inside of a duct/pipe.
1. Use M6 (1/4'') bolts with hex socket caps to mount the
enclosure to one of the following options.
Option
Mounting on a flat surface
Mounting on a pole
Mounting on a duct/pipe
4.1.2 Electrical installation
4.1.2.1 General information on electrical installation
– For tightening torques, see 16.7, for permissible cable
specifications, see 16.3.
– Strict compliance must be given to the electrical codes
that govern the routing and connection of electrical power
and signal cables to gas monitoring equipment.
– Ferrules must be used.
– The conductors for the power supply must have an
adequately low resistance to ensure the correct supply
voltage at the instrument.
– Wire insulation must be stripped by 5 to 7mm.
– The secondary circuit supplying power must be electrically
isolated from the mains circuit (does not apply for the relay
circuit).
– When installed at locations exceeding ambient
temperatures of 55 °C, use only appropriate wiring,
specified for at least 25 °C above the maximum ambient
temperature.
– Only use cable glands that are approved in the country the
system is installed in and suitable for the application.
– In accordance with EU Directive 2014/30/EU, this
instrument may not be connected to a DC system.
Providing the instrument with its own source of supply is
recommended.
Analog interface
– To ensure proper operation of the instrument, the
resistance of the 4 to 20 mA signal loop must not exceed
500 ohms.
When used in accordance with the metrological suitability
test compliant with EN IEC 62990-1, EN IEC 60079-29-1
or EN 50104, the resistance must not exceed 300 ohms.
With values above 300 ohms, supply voltage monitoring
cannot be ensured.
Depending on the operating voltage and the application
®
(e. g. HART operation), a specified minimum resistance
must be observed (see "Signal transmission to the
controller", page 42).
Transmitter installation |
Accessory
Drilling template: 4544300
Additionally for Polytron 87x0
IR: Spacer 6812617
Pole mount kit: 4544198
Duct mount kit: 6812725
®
For Polytron 87x0 IR::
6812300
en
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