Vaisala Transmissometer LT31

  • Single baseline for the measurement range 10...10 000 m MOR
  • State-of-the-art white light source
  • Automatic alignment with quality control as a standard feature
  • Automatic calibration as a standard
  • Window contamination compensation
  • Sophisticated self-diagnostics
  • Internal back-up battery
  • Meets the ICAO ad WMO requirements for RVR and visibility
  • Based on decades of field experience
  • Compatible with Vaisala Transmissometer MITRAS and SKOPOGRAPH II Flamingo
 

Visibility (MOR) measurement

 

Measurement range:
30 m baseline length (optimal)
50 m baseline length
75 m baseline length
Accuracy


10 ... 10 000 m

25 ... 10 000 m
37.5 ... 10 000 m
specifications for RVR and Visibility

Present weather (optional)

 

Identifies

7 different types of precipitation (rain, freezing rain, drizzle, freezing drizzle, mixed rain/snow, snow, ice pellets)

Message formats

 

LT31
MITRAS
SKOPOGRAPH II Flamingo

Standard incl. full status report
standard message (for replacement)
standard message (for replacement)

Operating environment

 

Temperature
Humidity
Wind

-40...+60 °C
0...100 %RH
60 m/s

Inputs and outputs

 

Operating voltage
Power consumption
Outputs

100/115/230 VAC
max. 800 W with all options
RS-232/RS-485/modem (optional)

Mechanics

 

Single baseline for full measurement range:
     Baseline length
     Measurement height
Weight:
     Transmitter unit LTT111
     Receiver unit LTR111



30 ... 75 m (30 recommended)
2.5 m

85 kg
82 kg

For complete specifications, please see the brochure or user guide in "Product Documentation".

 

 

Spare parts

 

Common spare and wearing parts are available. For availability contact sales.

Repair

 

Repair services are available at Vaisala service centers for a fixed price.

Repair price includes:
-repair work
-required parts
-calibration certificate
-service report

Technical support

 

Technical support for your installed units, contact helpdesk@vaisala.com.

LT31 Transmissiometer