The Rotronic HygroClip series, represents the industry benchmark for high-precision temperature and relative humidity probe instrumentation. Operating on the proprietary AirChip3000 digital core, these hot-swappable probes deliver exceptional long-term stability and high repeatability.
The standard white HC2A-S3 is explicitly engineered for outdoor meteorological deployments. Its solar-reflective white polycarbonate housing, when coupled with a passive Stevenson screen, entirely eliminates thermal tracking errors. The HC2A-S3 utilises the advanced HYGROMER HT-1 sensing element, safely shielded behind a robust 40µm Polyethylene dust filter. Featuring a native digital UART interface alongside twin user-scalable 0-1V analogue outputs, the probe seamlessly integrates into automated weather stations (AWS), remote industrial data loggers, and PLC networks without system downtime or re-calibration requirements.
Standard Meteorological Temperature and Relative Humidity Probe. Temperature Range: -50 to +80°C and Humidity 0-100%. Accuracy: ±0.1°C and ±0.8%RH. Outputs: 0-1V. Comes with a white Polycarbonate housing and a white Polyethylene dust (40µm) filter. Sensor Element: Hygromer HT1. Ideal for high Humidity Environments and Meteorological applications. Max wind speed 20m/s.
The HC2A-S3H is identical to the HC2A-S3 but has been adjusted at 9 different humidity points: 10, 20, 30, 40, 50 , 60, 70 , 80, 90%RH. This improves the humidity accuracy to ±0.5 %RH, making it ideal for applications requiring a better accuracy.
High Accuracy Meteorological Temperature and Relative Humidity Probe with UKAS Calibration. Temperature Range: -50 to +100°C and Humidity 0-100%. Accuracy: ±0.1°C and ±0.5%RH, adjustments at 23 °C and 10, 20, 30, 40, 50, 60, 70, 80, 90 %RH. Outputs: 0-1V. Comes with a white Polycarbonate housing and a white Polyethylene (40µm) filter. Sensor Element: Hygromer HT-1. Ideal for high accuracy portable measurements in open spaces, warehouses, museums or factory floors. Max wind speed 20m/s. Supplied with UKAS calibrated (UKAS-T1-H3) at: 20, 50, 80 %RH performed at 20°C.
The premium HC2A-S3A probe utilises a highly specialised HYGROMER HM1-SK capacitive sensor core shielded by a dense 10µm stainless steel wire-mesh filter. This construction enables drift-free, condensation-resistant tracking across extreme environments, maintaining structural and data integrity even under continuous wind velocities up to 50 m/s.
High-End Meteorological Temperature and Relative Humidity Probe. Temperature Range: -50 to +80°C and Humidity 0-100%. Accuracy: ±0.1°C and ±0.8%RH. Outputs: 0-1V. Comes with a white Polycarbonate housing and a wire-mesh (10µm) filter. Sensor Element: Hygromer HM1-SK. Ideal for high Humidity Environments and Meteorological applications. Max wind speed 50m/s.
The MP100A (providing 0-1V voltage outputs) and MP400A (providing user-configurable 0/4-20 mA current loops) series rely on integrated, non-detachable analogue sensors. Built using the legacy HYGROMER IN-1 internal sensor, these legacy units lack the advanced specialised barriers and protective surface coatings found on modern outdoor cores. This makes them significantly more vulnerable to modern agricultural chemical pollutants, organic micro-algae build-up, and intense marine salt deposition.
The modern, modular MP102H/MP402H transmitter platforms support hot-swappable digital HC2A-S3 or HC2A-S3A probes to eliminate field downtime during calibration cycles. The standard interchangeable sensor assemblies leverage the upgraded HYGROMER V-1 internal sensor cell. This core represents a major technological leap from the legacy IN-1, introducing robust defence against the accumulation of organic bio-films or micro-algae common to outdoor deployments, while delivering significantly faster baseline recovery periods after high-moisture saturation events.
The complete Rotronic Meteorological Integration Suite—comprising the high-end HC2A-S3A precision probe and the ruggedised MP102H/MP402H transmitter chassis—represents the pinnacle of weatherproof climate instrumentation. To ensure seamless industrial signal loops, the probe hot-swaps directly into either the MP102H (voltage output) or MP402H (4-20mA current loop) transmitter bases. This unified footprint provides onboard signal conditioning, an integrated RS485 communication interface, and options for secondary 4-wire PT100 RTD thermal traces, all managed within a single weather-shelter installation.
The MP102H, MP402H, MP100A and MP400A probes are not currently on the website, but will be added shortly. Contact us, if you would like a quotation.
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