Total Rain weighing Sensor TRwS with its original mechanical and electronic design is excellent tool to measure all types of precipitation within wide temperature range, harsh wind and snow conditions. TRwS is most sensitive and very accurate rain gauge. Simple mechanical construction together with very sophisticated firmware can guarantee perfect performance. TRwS is available with apertures of 500cm² as well as 200cm².

Main features
• Measurements of solid and liquid precipitation, one-minute rain intensity, total sum of precipitation, rain duration
• Elimination of wind vibration, particles, unreal step change of weight, evaporation, temperature fluctuation
• Output signals: contact, RS-485, SDI-12
• Easy maintenance
• Evaluation and accuracy check “in situ”
• Local and remote diagnostics
• Autodiagnostic and self check
• Orifice heating included
• Direct replacement of tipping bucket rain gauge

Optionally
• Air temperature measurement
• Rain detector
• Wind speed assessment
• Corrected data eliminating wind influence

• Fulfills all the WMO recomendations

Specifications

	TRwS204	TRwS504	TRwS205	TRwS405
Measurement
Orifice area	200cm2	500cm2	200cm2	400cm2
Range of precipitation	750mm	250mm	1500mm	750mm
Accuracy	0.1%
Maximum rain intensity	120mm/min
Resolution	0.001mm
Measuring element	strain-gauge bridge
Air temperature measurement	optional, -35..+70(±0.5)°C
Wind speed estimation	optional
Wind correction	yes
Wind shield	yes
Electrical & Interface
Power supply	8..24VDC/15mA max
Heating supply	10..15VDC/1..2A
Output contact (1 or 0.1 or 0.01mm)	Umax=30V, Imax=300mA
Serial output	RS-485/SDI-12
Mechanical
Dimensions	Ø360×540mm	Ø360×380mm	Ø385×650mm	Ø385×610mm
Weight	8.0kg		9.5kg
Environmental
Operating temperature range	-40..+70°C
Operating humidity range	0..100%
Degree of protection	IP65