Instructions

UM-0085-B09 DT80 Range User Manual Page 414
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Safety Information
General
• Ensure that all voltage input limits as specified in the DT80 Series Specifications (P379) are strictly adhered to.
• All sensors and other wiring connected to the logger are classed as extra low voltage circuits. These must be
separated from any hazardous voltage circuits (e.g. mains) wiring by double or reinforced insulation and
physical separation, as required by the local wiring code.
• The DT80 is powered by a 10-30V DC supply. If the supplied plug pack is not used then ensure that the power
supply output voltage is within this voltage range and is capable of supplying sufficient power for the DT80 and
any other equipment. See Power Consumption (P292) for more details.
• The DT80 and the supplied plug pack are not waterproof, and must be protected from exposure to water and
any other liquids at all times.
• The only user-serviceable parts inside the DT80 are the main and lithium batteries. When replacing these items
the procedure detailed in this manual (see Inside the DT80 (P282)) must be followed carefully, and the warnings
therein observed.
• The DT80 is not authorised for use as a critical component in any life-support or other safety-critical system,
where a failure of the DT80 could affect the system's safety or effectiveness.
Models with Internal Lead Acid Battery
The following applies to DT80/82I/85 models with an internal lead acid battery.
• The battery may generate gases, so ventilation must be provided to allow any battery gases to escape. If the
DT80 is mounted in a sealed enclosure then a valve should be provided to prevent gas build-up.
• When operating at high temperatures, acid may seep from the battery's regulator valve (located between the
battery terminals) if it is facing downward. The internal battery's terminals face the rear panel of the DT80. The
logger should therefore be oriented either in table top configuration (keypad/display facing up), or wall mounted
(input terminals facing down). It should not be wall mounted upside down (input terminals facing upwards)
because then the battery terminals and regulator valve would face downward.
• Any replacement battery must be identical in specification to the factory fitted battery. There is a risk of
explosion if the battery is replaced by an incorrect type.
• Dispose of used batteries via an appropriate recycling facility only.
• Do not expose the battery to excessive heat or short circuit its terminals.
• To fully power down the DT80, it is necessary to disconnect the external power connection, and disconnect the
battery link or external battery.
Models with Integrated Modem/ Integrated WiFi
The following applies to DT8xM models with integrated wireless modem.
The DT80 modem, like any mobile telecommunications device, generates radio frequency (RF) radiation while it is
switched on. This can present various hazards, as detailed below.
While the modem is switched off (as indicated by the red indicator LED on the side panel being off), no radio signals are
generated.
• It has been suggested that prolonged exposure to mobile telephone transmissions can be a health risk. To
minimise operator exposure to RF energy, the DT80 antenna should be positioned so that it is at least 200mm
away from the body of the user.
• Radio signals can interfere with personal medical equipment, including pacemakers and hearing aids. Users of
these devices should keep clear of the antenna.
• Radio signals can interfere with electronic devices such as medical equipment and life-support systems.
Respect any restrictions relating to the use of mobile devices in the vicinity of such equipment.
• Radio signals can interfere with aircraft systems, so the DT80 modem must not be used while in flight.
• Radio signals can generate sparks in some circumstances. The DT80 modem must not be used during vehicle
refuelling or at any time where explosive or flammable vapours or gases are present. It must also not be used if
blasting operations are in progress in the vicinity.
• Radio signals can interfere with electronic devices such as medical equipment and life-support systems.
Respect any restrictions relating to the use of mobile devices in the vicinity of such equipment.
WiFi device is also generates short range radio signals. The product should be used considering local regulations and
airline restrictions.