Vaisala LT31 - Electrical Specifications; Mechanical Specifications; Environmental Specifications

Chapter 8 ____________________________________________________________ Technical Data
VAISALA ______________________________________________________________________ 279
Electrical Specifications
Table 41 LT31 Electrical Specifications
Property Description / Value
AC supply 100/115/230 VAC + 10 %, 50-60 Hz
Power consumption 800 VA maximum (for complete LT31 system)
with all options
Battery backup option Battery 2 Ah, backup time 60 min at 20 °C when
a proper and fully charged battery is used
Outputs Serial data line RS-232 or opto-isolated
RS-485 (2-wire) or optional data modem
Separate Maintenance line RS-232
Mechanical Specifications
Table 42 LT31 Mechanical Specifications
Property Description / Value
Dimensions (h  w  d)
1)
2.685 mm  420 mm  1022 mm
Weight
Transmitter Unit LTT111
Receiver Unit LTR111
85 kg
82 kg
Mounting On concrete foundation with three 16 mm
diameter bolts.
Mounting bolt pattern equal with MITRAS and
SKOPOGRAPH II Flamingo.
Material
- Mast, hoods, support units,
and all enclosures
- air duct and interface unit
cover parts
Anodized/alodined aluminum, paint-coated
UV-resistant plastics (ASA)
Frangibility Mounting kit contains frangible bolts
1)
Height  width  depth
Environmental Specifications
Table 43 LT31 Environmental Specifications
Property Description / Value
Operating temperature
-40 ... +65 °C standard; -55 ...
+65 °C hood
heater option
Operating humidity 0 ... 100 %
Wind speed Up to 60 m/s