Egenskaper

• Automatisk beregning av nedbørmengde og intensitet
• Interface for de fleste avlesnings-/logge-systemer
• Ingen intern oppvarming, snø smeltes med frostvæske
• Ingen bevegelige deler
• Enkelt vedlikehold
• Brukserfaring fra mer enn 20 år

Spesifikasjoner

• More than 25 years of field use

• Easy installation and maintenance

• Precipitation intensity can be calculated

• Proven long term reliability

• No internal heating required

• No moving parts

• Interfaces to most data acquisition systems

• Vibrating wire weighing sensors

TheT-200 precipitation gauge was

developed more that 25 years ago

for all weather precipitation monitoring.

It was designed in cooperation

with the Norwegian Meteorological

Institute and the Norwegian

Geotechnical Institute.

Precipitation can be reported at

real-time intensity to any interval

required.The precipitation gauge is

simple to configure for use with

automatic data acquisition units. The

standardT-200B has a 600 mm capacity

and one vibrating wire sensor.

1000mm capacity and three sensors

are options.

The gauge has a protective housing

with aWMO standard 200 cm2 inlet.

Inside there is a container for collecting

the precipitation.The amount of

precipitation is measured by using

vibrating wire load sensors.The

instrument as well as a wind shield

is mounted to the pedestal.

With the use of antifreeze any solid

precipitation is melted in the container.

No electrical heating is therefore

required, thus eliminating a common

source of error. A thin layer of oil is

added to impede any evaporation.

TheT-200 series precipitation gauges

are used world wide by:

• National weather services
• Climatic research institutes
• Hydro power companies
• Airport authorities
• Road authorities
• Agricultural services
• Avalanche prediction centres
• Winter sport resorts

The precipitation collected in the

container are weighed with a vibrating

wire load sensor, which gives a

frequency output.The frequency will

be a function of the applied tension

on the wire, i.e. from this, the

amount of precipitation can be computed.

The frequency is recorded as

a square-shaped 0-5 V signal.This

signal can easily be transmitted and

interfaced to most data acquisition

systems.There are no mechanical

moving parts, eliminating other

possible sources of error.

Because of its simplicity and low

power requirement, theT-200B is well

suited for remote locations where

power may only be available from

solar energy.

Geonor supplies interface adaptor

for use with automatic data acquisition

units. Output: 0-5V square wave.

1500 MM CAPACITY

A version of theT-200B with

1500 mm capacity will be available

in 2009.The design will make it

possible to retrofit existingT-200B

units with the larger capacity.

3 SENSOR SYSTEM

Using a 3 sensor system ensures the

continuation of data recording if one

of the sensors should fail.This is

made possible with a level retaining

device. It also ensures that the total

amount of the precipitation will be

measured even if there is a slight

deviation from the horizontal plane.

Standard single sensor units can

easily be upgraded to 3 sensor

systems.

WHITE HOUSING

The standardT-200B comes with

anodized housing and black inlet.

The housing, including the inlet, is

also available in white.