Ingenieursbureau Wittich & Visser Products & Reviews

The standard MAX 40 anemometer has proven to be a rugged, reliable and highly accurate anemometer. Professional quality at a minimum price. Its low moment of inertia and unique bearings permit very rapid response to gusts and lulls. The unique bearing system is self-lubricating and moisture or dirt will not destroy the bearings or degrade the performance (self cleaning). Moreover the anemometer is highly resistant to icing, ev…

The RSA is a rain sensor with a processor controlled relay contact and surface temperature control and is ideal for climate control systems such as sun blinds and greenhouse automation.For even better climate control we have the programmable sensor RSA-P. This reliable rain sensor can be programmed en read out on PC by the user.

Rain gauge with 200 cm² circular collecting area (WMO standard), made of stainless steel. The instrument consists of: 1 upper part with limiter ring, 1 lower part, 1 collecting can, 1 holder, 1 precipitation measuring vessel DIN 58667B, 0-10 mm, scaled in 1/10 mm precipitation height.

RA01 is a 2-component radiation sensor that is used for scientific-grade energy balance studies. The instrument has separate measurements of solar (Short Wave or SW) and Far Infra-Red (Long Wave or LW) radiation. Combined with estimates of SW solar albedo- and of surface temperature, this instrument can also be used for estimation of net-radiation. The advantage in this approach are reduction of costs and independence from loc…

Features Easy to read display Integral or interchangable probe Tried-and-tested housing With AirChip3000-technologyThe HygroPalm2-series is the latest development in handheld measuring instruments for relative humidity, temperature and dew point. Based on AirChip3000 technology, this indicator achieves a degree of accuracy not seen before.In combination with advances in sensor technology and integration, the HygroP…

Known worldwide for its consistent reliability and outstanding performance (±0.05% FS accuracy), the Model 270 has been used in applications such as Weather Monitoring, Avionics Systems, and Crucial Compensation of Barometric Pressure in Laser Interferometers.

Sensor for indoor and outdoor light intensity measurements. The sensor uses a silicon photovoltaic cell and is sensitive for wavelengths between 400 and 1100 nm.