Products and equipment > Sensors
TEMPERATURE sensors
Air temeprature, relative humidity
PESSL INSTRUMENTS HYGROCLIP (AIR TEMPERATURE AND RELATIVE HUMIDITY)
Measures relative humidity and temperature with outstanding accuracy and repeatability. It has an integrated data acquisition and calibration history. Dew point, VPD and delta T calculations available.
| SENSOR | PESSL INSTRUMENTS HYGROCLIP (AIR TEMPERATURE AND RELATIVE HUMIDITY) |
| Part No. | A660611 |
TECHNICAL SPECIFICATIONS
| Temperature sensor | PT1000 1/3 Class B |
| Humidity sensor | ROTRONIC Hygromer® IN-1 |
| Accuracy with standard adjustment profile | at 23°C and 10, 35, 80 % rh ± 0.8% rh / ± 0.1 °C |
| Accuracy with high precision adjustment profile | at 23 °C and 10, 20, 30, 40, 50, 60, 70, 80, 90 % rh ± 0.5% rh / 0.1 °C |
| Resolution, AirChip3000 | Typically 0.02 % rh, 0.01 °C |
| Long-term stability | < 1 % rh, 0.1°C / year |
| Humidity response time t 63 | 3 seconds |
| Measurement range | 0…100 % rh, -100…200 °C |
| Electronics operating range | -50-100 °C and 0-100 % rh |
| Output signals | Serial port RS485 |
| Audit trail & electronic records | FDA 21CFR Part 11 and GAMP compliant |
| Power supply & consumption | 3.2 V / 4 mA |
| Housing/probe material | Polycarbonate |
| Filter | Polyethylene insert, polycarbonate cage |
| Standards | CE-compliant 2007/108/EG |
PESSL INSTRUMENTS AIR TEMPERATURE AND RELATIVE HUMIDITY SENSOR – with a longer cable
Measures air temperature and relative humidity with the additional calculation of virtual sensors like dew point, VPD and delta T. The sensor is used for low power consuming applications on μMETOS CLIMA (LoRaWAN, NB-IoT). Application: when long distances up to 15 m from the main station are required i.e. in greenhouses in/out when two or more sensors are needed.
| SENSOR | PESSL INSTRUMENTS AIR TEMPERATURE AND RELATIVE HUMIDITY SENSOR |
| Part No. | IM526TR-SHLD |
TECHNICAL SPECIFICATIONS
| Sensor | HYT221 |
| Operating temperature range | -40°C to +60°C |
| Humidity range | 0% to 100% RH |
| Accuracy | ±0.2°C (0°C to +60°C) ±2 % RH at +23 °C (0% to 90% RH) |
| Operating voltage | 2.7V to 5.5V |
| Digital interface | RS485 with PI-Bus, insertable in a chain |
| Operating voltage (limit data) | 0.3 V to +6 V |
| Storage conditions | -20 °C to +50 °C |
| Cable lenght | 5m |
PESSL INSTRUMENTS AIR TEMPERATURE AND RELATIVE HUMIDITY SENSOR
Measures air temperature and relative humidity and is used for low power consuming applications on μMETOS CLIMA (LoRaWANTM, NB-IoT) and iMETOS ECO D3.
I2C Bus Considerations: I2C Bus is sensitive to electromagnetic waves and can be distorted under certain conditions. On the contrary, Hygroclip is less sensitive.
Recommended cable length: not longer than 1 m
| SENSOR | PESSL INSTRUMENTS AIR TEMPERATURE AND RELATIVE HUMIDITY SENSOR |
| Part No. | IM526TR |
TECHNICAL SPECIFICATIONS
| Sensor | HYT221 |
| Operating temperature range | -40°C to +125°C |
| Humidity range | 0% to 100% RH |
| Accuracy | ±0.2°C (0°C to +60°C) ±2 % RH at +23 °C (0% to 90% RH) |
| Operating voltage | 2.7V to 5.5V |
| Digital interface | I²C, address 0x28 or alternative address |
| Operating voltage (limit data) | 0.3 V to +6 V |
| Storage conditions | -20 °C to +50 °C |
PESSL INSTRUMENTS WET AND DRY BULB TEMPERATURE
Two highly reliable and tested PT1000 are built in a waterproof housing. One of them is covered with cotton tissue and wetted with water.
| SENSOR | PESSL INSTRUMENTS WET AND DRY BULB TEMPERATURE |
| Part No. | IM505CD |
TECHNICAL SPECIFICATIONS
| Sensor | PT1000 (technical details of PT1000 are under relative humidity and air temperature) |
| Supply voltage | 4.57 – 7 V for chain version |
| Supply current | max. 200 μA |
| Short circuit protection | infinite (within supply voltage range) |
| Short circuit supply current | max. 40 mA |
| Operating temp. range | -30° C to +60° C |
| Accuracy | 0.1 °C |
| Cable length | 5 m |
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PESSL INSTRUMENTS BAROMETER
air pressure
The Pessl Instruments barometric sensor measures the “absolute air pressure” of the atmosphere on site. It is designed for application in the field of environmental protection, where high accuracy, quick response, longterm stability and reliability are required. The instrument is suited for indoor and outdoor use. A tempered piezoceramic sensor for absolute pressure is used, characterized by its thermal and mechanical stability.
| SENSOR | PESSL INSTRUMENTS BAROMETER |
| Part No. | MD514D |
TECHNICAL SPECIFICATIONS
| Working range | 0-1150 mbar |
| Weight | ca. 50g |
| Power supply | 5.0 VDC (6VDC maximum) |
| Zero offset | 0.50 ±0.09 VDC |
| Power uptake | max. 20mA |
| Precision | 0.1 % max. Thrift |
| Temperature range | -40 °C to 125 °C |
| Measuring type | Serial (RS 485) |
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PRECIPITATION sensors
PESSL INSTRUMENTS RAIN GAUGE
The mechanic consists of a magnet, which moves past a reed switch and opens or closes the circuit. The double spoon tips left or right and does not lose any water due to a very fast switching mechanics. The resolution with a surface of 200 cm2 is 0.2 mm, while the resolution with the 80 cm2 is 0.5 mm. Heating for rain gauge can also be included.
| SENSOR | RAIN GAUGE |
| Part No. | IM523 |
TECHNICAL SPECIFICATIONS
| Sensor Type | Double tipping bucket rain gauge |
| Output | Switch signal |
| Switch | Reed contact, solid state |
| Sensitivity | 1 tip per 0.2 mm or 1 tip per 0.5 mm |
| Collector Surface | 200 cm2 |
| Evaluation | Digital |
| Maximum Rain | 12 mm/minute |
| Dimensions | 185 mm diameter x 250 mm H |
| Accuracy | ±5% |
| Addition: high precision rain gauge calibration module | |
| Accuracy | ±3.5 % |
ADDITIONAL equipment: BIRD SPIKES
Protect your rain gauge from birds entry with the use of the green crown with bird spikes.
PESSL INSTRUMENTS HIGH PRECISION RAIN GAUGE
Latest weighing technology combined with a self-emptying precision tipping bucket allows the rain[e]one a high resolution and high precision at a very small construction volume. The rain[e]one is ideal to setup new measurement network as well as addition to an existing rainfall measurement network. The proven mechanic of a Pessl Instruments High precision rain gauge consists of a magnet, which moves past a reed switch and opens or closes the circuit. The double spoon tips left or right and does not lose any water due to a very fast switching mechanics to precisely measure high intense rainfall events. The resolution with a surface of 200 cm2 is 0.1 mm. Heating for rain gauge can also be included.
| SENSOR | PESSL INSTRUMENTS HIGH PRECISION RAIN GAUGE |
| Part No. | HPR1000 |
TECHNICAL SPECIFICATIONS
| Resolution | minimum 0.1 mm |
| Accuracy | ±1 % at 1 mm/min |
| Amount resolution | without limitation |
| Intensity range | 0-10 mm/min resp. 0-600 mm/h |
| Intensity resolution | 0.1 mm/min resp. 0.001 mm/h |
| Collecting surface area | minimum 200 cm² |
| Measuring principle | weighing with automatic self emptying |
| Working range | 0-65 °C |
| Housing material | glass-epoxy laminate |
| Holder | stainless steel bracket holder |
| Protection class | IP67 |
| Standards | WMO-No. 8 • VDI 3786 Bl. 7 • EN 61000-2, -4 • EN 61000-4-2, |
Debris protection and filter
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SOIL TEMPERATURE sensors
PESSL INSTRUMENTS SOIL TEMPERATURE
The Soil Temperature Sensor is a PT1000 in a waterproof stainless steel housing. The sensor output is a duty-cycle signal.
| SENSOR | PESSL INSTRUMENTS SOIL TEMPERATURE |
| Part No. | IM5041D |
TECHNICAL SPECIFICATIONS
| Sensor SMT172 | Operating temperature range: -30 °C to +75 °C Accuracy: ±0.5 °C (-30 °C to +75 °C) |
| Sensor PT1000 | Operating temperature range: -30 °C to +75 °C Accuracy: ±0.1 °C (-30 °C to +75 °C) |
| Supply voltage | 4.57-7 V |
| Supply current | max. 200 μA |
| Short circuit protection | infinite (within supply voltage range) |
| Short circuit supply current | max. 40 mA |
| Calibration error | max. 0.25°C (23°C) |
| Nonlinearity error | max. 0.2°C |
| Supply voltage sensitivity | max. 0.1°C/V |
| Repeatability | max. 0.2°C |
| Long term drift | max. 0.1°C |
| Output frequency | 1 to 4 kHz |
| Evaluation | Duty cycle |
| Cable length | 5 m |
PESSL INSTRUMENTS MULTIPLE SOIL TEMPERATURE
SAR19/SAR19M provide soil temperature measurement from several centimeters to 15-meter deep by using the Pessl Instruments sensor BUS. The distance between the ensors can be chosen according the application, but only up to 10 sensors can be attached to one sensor chain.
| SENSOR | PESSL INSTRUMENTS MULTIPLE SOIL TEMPERATURE |
| Part No. | SAR19/SAR19M |
TECHNICAL SPECIFICATIONS
| Temperature sensor | DS18B20 |
| Operating temperature range | -55°C to +125°C |
| Supply DC Voltage (range) | 3 – 5.5 V |
| Thermometer error -10°C to +85°C | ±0.3°C |
| Drift | ±0.2°C |
| Data transmission | RS 485 Digital signal (temperature data sent on demand of iMETOS main board) |
SINGLE SOIL TEMPERATURE
WMTEMP is a soil temperature sensor usually used with Watermark sensors on iMETOS ECO D3.
| SENSOR | SINGLE SOIL TEMPERATURE |
| Part No. | WMTEMP |
TECHNICAL SPECIFICATIONS
| Temperature sensor | DS18B20 |
| Operating temperature range | -55°C to +125°C |
| Supply DC Voltage (range) | 3 – 5.5 V |
| Thermometer error -10°C to +85°C | ±0.3°C |
| Drift | ±0.2°C |
| Data transmission | Rs 485 Digital signal (temperature data sent on demand of iMETOS main board) |
PESSL INSTRUMENTS HEAVY DUTY MULTIPLE-TEMPERATURE PROBE
Multiple-temperature probe is a thermometer, designed for making measurements in extremely harsh conditions like temperature of waste on disposal sites, and chipped wood in storage rooms.
| SENSOR | PESSL INSTRUMENTS HEAVY DUTY MULTIPLE-TEMPERATURE PROBE |
| Part No. | MUSO |
TECHNICAL SPECIFICATIONS
| Operating temperature range | -55°C to +125°C |
| Supply DC voltage (range) | 3 – 5,5 V |
| Thermometer error -10°C to +85°C | ±0.3°C |
| Drift | ±0.2°C |
| Data transmission | RS 485 Digital signal (temperature data sent on demand of iMETOS main board) iMETOS checks all sensors every 5 minutes |
IRROMETER TENSIOMETER
The instrument measures soil water tension (or suction). This value represents the energy a plant’s root system uses to draw water from the soil. Understanding soil moisture dynamics helps the user make informed irrigation scheduling decisions, resulting in improved yield quantity and quality while reducing water, fertilizer, labor and energy costs. Available in different lengths: 15 cm, 30 cm, 45 cm, 60 cm and 90 cm.
| SENSOR | IRROMETER TENSIOMETER |
| Part No. | TNS101 TNS103 TNS104 TNS105 TNS106 TNS107 TNS108 |
TECHNICAL SPECIFICATIONS
| Instrument body materials | Butyrate body, ceramic tip, neoprene stopper |
| Weight | 30 cm weights 0.439 kg. It increases 0.114 kg per 30 cm |
| Ceramic tip | White tip – used for most soil types |
| Operating suction | 0-90 kPa |
| Operating temperature range | 0°C to 50°C |
| Reservoir dimensions | Height: 120-130 mm including cap; Diameter: 51-55 mm including cap |
| Body tube dimensions | Lenght: ranges from 15 to 90 cm Diameter: 22 mm |
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SOIL MOISTURE sensors
PESSL INSTRUMENTS SOIL MOISTURE SENSOR
PI54-D
The PI54-D soil moisture sensor has a larger volume of influence. It determines volumetric water content (VWC) by measuring the dielectric constant of the soil using capacitance technology and soil temperature. It is 10 cm long and thus measures 1 liter of soil, while high frequency minimizes salinity and textural effects which makes PI54-D accurate in most soils.
| SENSOR | PESSL INSTRUMENTS SOIL MOISTURE SENSOR PI54-D |
| Part No. | PI54-D/5 |
Technical specifications
| Volumetric water content (VWC) | Range: 0−0.57 m3/m3 (0%−57% VWC) Resolution: 0.0008 m³/m³ (0.08% VWC) in mineral soils from 0−0.50 m³/m³ (0%−50% VWC) Accuracy: With standard calibration equation, 0.03 m³/m³ (3% VWC) typical in mineral soils that have solution electrical conductivity <10 dS/m NOTE: With soil-specific calibration, ±0.02 m³/m³ ( ±2% VWC) is typical in any soil. |
| Dimensions | 16.0 cm (6.3 in) length; 3.3 cm (1.3 in) width; 0.8 cm (0.3 in) height |
| Prong length | 10 cm (3.94 in) |
| Operating temperature range | -40 to 50 °C |
| Cable length | 5 m, 10 m |
| Supply voltage (VIN to GND) | Minimum: 3.6 VDC at 12 mA Maximum: 15 VDC at 20 mA |
| Measurement duration | Maximum 10 ms |
| Temperature accuracy | ±0.3 |
| Output | Analog and digital |
SENTEK DRILL & DROP TRISCAN PROBE
Sentek Drill & Drop probe provides the user with great flexibility for precision monitoring of temperature, water and salinity (Triscan) at multiple depths in a soil profile. Available in five lengths: 10 cm, 30 cm, 60 cm, 90 cm and 120 cm with sensors fixed at every 10 cm increment.
| SENSOR | SENTEK DRILL & DROP TRISCAN PROBE |
| Part No. | SE100 SE300 SE600 SE900 SE1200 SE100S SE300S SE600S SE900S SE1200S |
TECHNICAL SPECIFICATIONS
| Probe lengths | 10 cm (4”) / 30 cm (12”) / 60 cm (24”) / 90 cm (36”) / 120 cm (48”) |
| Number of sensors | 1 / 3 / 6 / 9 / 12 |
| Outer Probe Diameter (Top-Bottom) | 24-24.5 mm / 28-29.5 mm / 27-29.5 mm / 26-30 mm / 24.5-29.5 mm |
| Moisture (VWC) range | Oven dry to saturation |
| Method | Capacitance based technology |
| Resolution | Moisture (VWC): 1:10000 Salinity (Triscan) (VIC, Volumetric Ion Content): 1:6000 Temperature: 0.3 °C |
| Moisture precision | ±0.03 % vol. |
| Temperature accuracy | ±2 °C at 25 °C |
| Operating temperature range | -20°C to +60°C |
iMETOS AC PROBE – AQUACHECK SUB-SURFACE PROBE
The Aquacheck sub-surface soil moisture probe offers capacitance based soil moisture and temperature measurements along the vertical soil profile. Different configurations are available with 6, 8 or 12 sensors for a probe length variable from 600 to 1200 mm.
| SENSOR | iMETOS AC PROBE – AQUACHECK SUB-SURFACE PROBE |
| Part No. | AQ0606 AQ0808 AQ1212 |
TECHNICAL SPECIFICATIONS
| Probe lengths | from 600 to 1200 mm |
| Number of sensors | 6 / 8 / 12 sensors depending on the configuration |
| Shaft Diameter | 32 mm |
| Moisture (VWC) range | Oven dry to saturation |
| Method | Capacitance based technology |
| Temperature range | 0 °C to 51 °C |
| Temperature resolution | 0.2 °C |
| Cable length | 5 m |
IRROMETER WATERMARK SOIL MOISTURE SENSOR
The Watermark Sensor consists of two concentric electrodes buried in a special reference matrix material that is held in place by a synthetic membrane. The matrix material has been selected to reflect the maximum change of electrical resistance over the growth range of crop production, as well as to neutralize the effect of soil salinity. In operation, soil moisture is constantly being absorbed or released and the electrical resistance between the electrodes changes. This resistance is read and logged by the weather station.
The sensor is manufactured from non-corrosive materials and lasts up to three years.
| SENSOR | WATERMARK SOIL MOISTURE SENSOR |
| Part No. | MD510SM MD510SM-10M |
TECHNICAL SPECFICATIONS
| Size | 2.2 cm diameter x 5 cm length |
| Measuring Principle | Soil water tension correlated with electrical resistance in granular matrix |
| Working range | 0 to 200 kPa |
| Precision | 5% |
| Evaluation | Analog |
| Cable | 4.5 meters |
IRROMETER TENSIOMETER
The instrument measures soil water tension (or suction). This value represents the energy a plant’s root system uses to draw water from the soil. Understanding soil moisture dynamics helps the user make informed irrigation scheduling decisions, resulting in improved yield quantity and quality while reducing water, fertilizer, labor and energy costs. Available in different lengths: 15 cm, 30 cm, 45 cm, 60 cm and 90 cm.
| SENSOR | IRROMETER TENSIOMETER |
| Part No. | TNS101 TNS103 TNS104 TNS105 TNS106 TNS107 TNS108 |
TECHNICAL SPECIFICATIONS
| Instrument body materials | Butyrate body, ceramic tip, neoprene stopper |
| Weight | 30 cm weights 0.439 kg. It increases 0.114 kg per 30 cm |
| Ceramic tip | White tip – used for most soil types |
| Operating suction | 0-90 kPa |
| Operating temperature range | 0°C to 50°C |
| Reservoir dimensions | Height: 120-130 mm including cap; Diameter: 51-55 mm including cap |
| Body tube dimensions | Lenght: ranges from 15 to 90 cm Diameter: 22 mm |
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ULTRASONIC SNOW HEIGHT OR WATER DEPTH SENSOR
Ultrasonic snow depth sensor is used for non-contact measurements of snow depth and river levels in extreme weather conditions. The sensor is characterized by its high level of operating reliability, low energy consumption and ease of use in the field.
| SENSOR | PESSL INSTRUMENTS ULTRASONIC SNOW HEIGHT AND WATER DEPTH SENSOR |
| Part No. | USH8 |
TECHNICAL SPECIFICATIONS
| Range | 0 to 10 m |
| Resolution | 10 mm |
| Accuracy | 0.5 % (FS) |
| Measurement principle | Ultrasonic |
| Temperature measurement range | -40 °C to +60 °C |
| Digital RS-232 interface | Serial port protocol, distance or snow depth |
| Power supply | From the input of the iMETOS, in areas with limited sun extended battery is needed (ord. no. USH8-BATT-EXT). |
| Ingress protection | IP 66 |
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