Schelt Technology

Please note that this product has been discontinued.

Kindly refer to:

• PBS83M… series for barometric transmitters with digital output
• PBS860… and PBS880… for barometric transmitters with analog output.

The BTD-350 is a standalone thunderstorm detector designed specifically for marine use on large vessels and offshore installations. Its reinforced stainless-steel and aluminium construction with marine-grade coating withstands salt spray, severe weather and vibration. Using a unique quasi-electrostatic operating principle, it detects all types of lightning out to 83 km (45 NM) with an exceptionally low false alarm rate and can warn of the risk of overhead lightning even before the first discharge. The detector can operate with supplied PC software, be integrated into safety or weather systems, or directly trigger local alarms via optional relay outputs.

The BTD-200 is a self-contained lightning warning system developed from Senseca’s professional aviation-grade lightning detection technology. It is designed for sporting events, outdoor pursuits, industrial and meteorological applications where reliable and early warning of thunderstorms is critical. Using a unique quasi-electrostatic principle, the sensor detects all forms of lightning activity out to 35 km (22 miles), while advanced signal processing delivers a very low false alarm rate and accurate ranging. It can warn of dangerous overhead lightning risk even before the first strike occurs. Supplied as a complete “out-of-the-box” solution with universal power supply and Lightning Works server software, the BTD-200 is quick to install and provides automatic monitoring, warning and data logging of approaching thunderstorms.

The sensor for the measure of atmospheric pressure mod. BAR, is an electronic barometer with analogic or digital output which can easily acquired by any datalogger. The low consumption (standard <22mA) and the compact dimensions, make it an ideal instrument for all acquisition systems and campaigns of measure with meteorological stations. Its shape, with reduced dimensions, allows an easy installation in both outdoor (IP65 box) and indoor locals. This sensor is built according to the WMO standards (World Meteorological Organization). The sensor is available with output 0÷2Vdc,4÷20mA or RS485/Modbus.

The digital Barometer BAR-AV, is a high precision instrument for absolute pressure, QNH, QFE, QFF. Long-term stability and a web interface make it the perfect instrument for professional acquisition systems in meteorology, aviation and industrial applications. Heavy duty enclosure IP67, allows an easy installation also in harsh environmental conditions. This sensor is built according WMO and ICAO standards. 

he digital Barometer BAR-AV, is a high precision instrument for absolute pressure, QNH, QFE, QFF. Long-term stability and a web interface make it the perfect instrument for professional acquisition systems in meteorology, aviation and industrial applications. Heavy duty enclosure IP67, allows an easy installation also in harsh environmental conditions. This sensor is built according WMO and ICAO standards. The 3 capacitive transducers permit to increase the average accuracy on wide temperature range and for long time. 

The SCO2 Carbon Dioxide Sensor is a compact and reliable device designed for accurate indoor air quality monitoring. It uses advanced NDIR (Non-Dispersive Infrared) technology with dual wavelength, ensuring high precision and long-term stability.

 

The probes HD3910.1 (two electrodes) and HD3910.2 (three electrodes) measure the soil volumetric water content (VWC) by using a capacitive measurement principle which allows fast measurements in the field and with minimal invasiveness.

The three electrode probe HD3910.2 is particularly suitable for the measurement in small volumes, for example for cultivations in pots.

The probes give a direct reading in Volumetric Water Content (VWC) from 0-60%.

Versions available:

• RS485 digital output with MODBUS-RTU protocol: allows the use of even very long connection cables. It can be connected to the data loggers HD32MT.1 and HD32MT.3 or to any other data logger with RS485 MODBUS-RTU input.
• SDI-12 digital output is compatible with version 1.3 of the protocol and can be connected to the data logger HD32MT.3 or to any other data logger with SDI-12 input.
• Analog output has two 0.5…3 V standard voltage outputs: one for the volumetric water content and one for the temperature. On request, 0…2.5 V, 0…5 V or 0…10 V outputs.

The probes are equipped with a fixed cable, 5 or 10 m standard length, with open wires at the end.

The HD50CR is the ideal solution for monitoring of differential pressure, temperature and humidity in Clean Room applications.

A low pressure sensor with high accuracy and stability and auto-zeroing feature ensure high accuracy and stability over the time.

Three 0…5/10 V and 0/4…20 mA analog outputs and a digital RS485 output with “Slave” Modbus-RTU protocol allow connecting the instrument to a network of sensors are available. The instrument can also be connected to a local network via the Ethernet interface (optionally Wi-Fi, on request). The simultaneous operation of two communication protocols (proprietary and Modbus TCP/IP) is possible. The instrument manages up to 10 “TCP/IP Client” simultaneously. If the local network is connected to Internet, the data can be regularly sent to an FTP address, to the Cloud and via e-mail.

The instrument is also available in a version with only the 3 analogue outputs and the RS485 digital output, with decimal resolution. Click here for the HD50CR-AS dedicated manual.

Configuring the instrument is very simple: if both connected to the same network, this can be done through any device that has been granted access to the instruments webserver.

For each detected quantity, two alarm thresholds can be set by the user. Exceeding a threshold is signaled by direct alarms.

For specific FDA regulations that can apply in the Pharmaceutical industry, we can provide optional modules to our standard HD35AP-S and HDServer1 software to fully operate conform 21 CFR part 11 regulations.

The HD50CR provides the ideal solution for the application, keeping track of any out of range values and providing the perfect evidence for any quality audit. The stainless steel flush-mounted style guarantees that the instrument is easy to clean.

HD53GSM is a wireless quad-band GSM/GPRS modem. The module is controlled via standard RS232 serial interface and AT commands.

It features:

• SIM card slot,
• SMA antenna connector,
• power line connector with remote on/off line,
• two status LED: the POWER LED is switched on when the GSM is powered, the NET LED indicates the connection status to the GSM net,
• RS232 Sub-D 9-pin connector.

The HF-01SG is a smal size standard plate type heat flux sensor, developed specifically for soil and ground heat flux measurement applications. It is an ideal option for research and controlling applications related to soil and ground thermal management. Manufactured in compliance with standards ASTM C1046 and ISO 9869, it ensures an even heat flux distribution and therefore a reliable measurement experience. The unique combination of small size, thin body, fast response, and high sensitivity, makes this sensor a perfect choice for accurate measurement of heat flux, even in low heat flux conditions. the sensor's installation is very easy and the disturbance to the soil is minimal. 

Stainless steel Pitot tubes to measure air speed and temperature, for models provided with ‘K’ thermocouple, equipped with silicon tube with 6 mm external diam., 4 mm internal diam. and length 2 m.

PW cable has to be ordered separately.

Types available:

T1-300 – lenght 300 mm

T2-400 – lenght 400 mm

T3-800 – lenght 800 mm

T3-800TC -lenght 800 mm – K thermocouple

For other lengths please, contact us.

HD32MT.1 data logger integrated in a fiberglass-reinforced hot-pressed polyester outdoor housing. Screen to protect the housing from solar radiation, powder-coated anodized aluminum. White.

Key lock. Dimensions 415 x 310 x 170 mm. IP66 protection degree.

Supplied with accessories for attachment to the stainless steel pole diameter 36…52 mm. Provided for 100…240 Vac mains power supply or for power supply from solar panel (version HD32.36FP). Wired and tested.

Optionally, LCD viewer simple (HD32.3D) or with GPS module for automatical time synchronization of the data logger (HD32.D.GPS)

The heating and ventilation unit is meant to be used with solar radiation sensors (pyranometer, pyrgeometer and radiometer) and can be used outdoor under any weather conditions.

The ventilation of the instruments increases the precision of the measures by making the pyranometer’s temperature uniform, in particular it avoids the deposit of dew and frost on the optical parts of the sensors and reduces the off-set of type A (present in pyranometers and pyrgeometers) caused by the cooling of the dome with respect to the instrument’s body.

The HD9906.51 unit can be used with LPPYRA02 and LPPYRA10, with the pyrgeometer LPPIRG01 and the radiometers LPPHOT02, LPUVA02 and LPUVB02.

LPNET14 is a 4-component net-radiometer for the measurement of the net radiation between 0.3 μm and 45 μm.

The net-radiometer consists of two pyranometers (one for the measurement of the global radiation Esw↓ and the other one for the measurement of the reflected solar radiation Esw↑ ) and a pair of pyrgeometers (one for the measurement of the infrared radiation emitted by the sky EFIR↓ and the other one for the infrared emitted by the ground surface EFIR↑).

The LPNET14 is equipped with a temperature sensor (NTC). The measurement of the temperature is needed for the measurement with the two pyrgeometers, in fact, the far infrared is derived by measuring the thermopile output and by the knowledge of the instrument’s temperature.

The net radiometer is suitable for outdoor use in all weather conditions and requires little maintenance.

Outdoor photometric probe for measuring ILLUMINANCE (0…150 Klux), CIE photopic filter, diffuser for cosine correction. mVdc output for klux. Complete with Calibration Report. On request 5 or 10m cables with connectors.

LPPHOT02… probe measures illuminance (lux), defined as the ratio between the luminous flux (lumen) passing through a surface and the surface area (m²).
The spectral response curve of a photometric probe is similar to the human eye curve, known as standard photopic curve V(λ). The difference in spectral response between LPPHOT02 and the standard photopic curve V(λ) is calculated by means of the error f1′.

LPPHOT02 is designed and constructed for outdoor installation for long periods. The photometric measurement for external use is used for the measurement of daylight in climatological and meteorological applications.

The luxmeter is produced in three versions:

• LPPHOT02 – passive (mVdc output for klux);
• LPPHOT02AC – active (4…20 mA output, integrated transmitter amplifier);
• LPPHOT02AV – active (0…1Vdc, 0…5Vdc or 0…10Vdc output to be defined when ordering, integrated transmitter amplifier)

The VUP12 ventilation and heating unit allows increasing the accuracy of solar radiation measurements maintaining the operating temperature of the sensor uniform. Ventilation reduces the type “A” offset (present in pyranometers and pyrgeometers) due to cooling of the dome with respect to the sensor body.

It can be used outdoor in any weather condition and avoids the formation of dew and frost on the optical part of the sensor.

The use of ventilation and moderate heating prevents dew formation on the dome, especially in the early morning hours, allowing much more accurate measurements even in moderate climates. The heating function can also be used in extreme environmental conditions, to avoid the formation of snow and ice on the sensor dome.
The unit is equipped with two independent heating circuits of equal power, which can be individually activated to better adapt the heating function to the climate of the installation site.

The unit is suitable for LPS02… and LPS10… series pyranometers and allows solar radiation measurements to be performed according to the recommendations of the following standards:

• IEC 61724-1
• ISO/TR 990
• “BSRN operations manual”

Temperature profiler for snow cover, with white painted pole in anodized aluminium and 12 high accuracy temperature sensors (Pt100 1/5 DIN) places on adjustable and removable arms up to 25cm away from the border pole, to perceive small temperature differences between the various points. The measurements start from ground level up to a maximum of 250 cm height. The arms, with the sensors mounted on their head, are spread radially around the pole, to reduce the physical interference among them and ensure that each sensor is fully immersed in the snow at its corresponding level. Each arm is also installed with a specific angle (about 10°) that limits the permanence of snow in its surface during melting. The distance between the individual sensors changes according to the height from the ground. All sensors are inserted in a special terminal in Teflon and are easily interchangeable thanks to a special IP68 screwed connector. The sturdy structure, fixed to a base thanks to a special plate, is designed for cable routing. All sensors have a 4-wire cable and can be connected to an acquisition system via terminals. 

The Wet&Dry is a passive sampler used for the collection of the atmospheric dust and bathed depositions, generated from the rainy and snowy precipitations (wet) and from the dust depositions (dry) realized in accordance to the European legislation 2004/107/CE. The wet and dry deposition can be distinguished collected in two or more separate containers removable for subsequent analyses, thanks to the sensor that in case of rain, closes the collector of the dry depositions and opens the one of the wet depositions. The sampler is equipped with heating system both for the rain sensor and rain gauge that detects also snowy events, ice or hail, (only with optional primary power supply). Revised with a robust mechanical, it now offers the status of contacts for analysis on time bases. Such shrewdness allows the sampler Nesa Wet&Dry to be particularly adapted in all the environmental conditions (- 30 to +70°C). The use of materials like the anodized aluminium and stainless steel, guarantees an excellent resistance against corrosion due to the atmospheric agents, assuring a high durability. It’s also available in the solar panel version for one totally independent power, or primary 220Vac.

HailGuard is a high-precision instrument designed to detect and count impact events that exceed a configurable acceleration threshold (0–8G), directly on a calibrated surface. Whether caused by hailstones, heavy raindrops, stones, or mechanical shocks, each qualifying impact is registered and transmitted via an SFL radio interface with IoT protocol, enabling seamless integration into remote monitoring networks. Thanks to its robust design and smart configuration, HailGuard offers a reliable solution for:
• Hail monitoring in agrometeorological and PV applications
• Impact detection in critical infrastructure and outdoor equipment
• Environmental event tracking in remote or hard-to-access areas With factory-configurable sensitivity and wireless data transmission, HailGuard brings a new level of intelligence to environmental and impact monitoring.