{"title":"HOBO U23 Pro v2 Temperature\/Relative Humidity at Gh_LL7","id":{"prefix":"https:\/\/deims.org\/sensors\/","suffix":"588b4026-ea1f-4357-ad3e-fabdd7de382c"},"type":"sensor","created":"2019-08-29T11:44:44+02:00","changed":"2020-07-31T16:08:17+02:00","attributes":{"general":{"relatedSite":[{"type":"site","title":"Obergurgl - Austria","id":{"prefix":"https:\/\/deims.org\/","suffix":"3de1057c-a364-44f2-8a2a-350d21b58ea0"},"changed":"2024-05-08T15:30:54+0200"}],"contact":[{"type":"person","name":"Nikolaus Schallhart","email":"klaus.schallhart@uibk.ac.at","orcid":"https:\/\/orcid.org\/0009-0006-5842-7041"},{"type":"person","name":"Ruediger Kaufmann","email":"ruediger.kaufmann@uibk.ac.at","orcid":null}],"abstract":"measurement of air temperature \u0026 air humidity in 2 m height; single point measurements, 30 min interval, 24\/7 |  \r\nmeasurements since 2000; since 2015\/2016: HOBO U23 Pro v2 Temperature\/Relative Humidity Data Logger (Part # U23-001) in radiation shield HOBO RS1 from ONSET\r\nThe identically constructed sensor is installed at the monitoring sites Rh_LL1, S-bf_LL2, R-M1858_LL3, HM_LL4-bf, Kk_LL5, O-p_LL6, Gh_LL7 and Fk_LL8 \r\n\r\ntechnical description:\r\n \r\nTEMPERATUR SENSOR\r\n\r\nOperation Range: \r\nU23-001A internal sensor: -40 to 70\u00b0C (-40 to 158\u00b0F); \r\nU23-002A external temperature sensor: -40 to 70\u00b0C (-40 to 158\u00b0F); \r\nU23-003 and U23-004 external sensors: -40 to 100\u00b0C (-40 to 212\u00b0F), with tip and cable immersion in fresh water up to 50\u00b0C (122\u00b0F) for one year\r\n\r\nAccuracy: \r\nU23-001A and U23-002A: \u00b10.25\u00b0C from -40 to 0\u00b0C (\u00b10.45 from -40 to 32\u00b0F), \u00b10.2\u00b0C from 0 to 70\u00b0C (\u00b10.36 from 32 to 158\u00b0F); \r\nU23-003 and U23-004: \u00b10.21\u00b0C from 0\u00b0 to 50\u00b0C (\u00b10.38\u00b0F from 32\u00b0 to 122\u00b0F)\r\n\r\nResolution: \r\nU23-001A and U23-002A: 0.04\u00b0C (0.072\u00b0F); \r\nU23-003 and U23-004: 0.02\u00b0C at 25\u00b0C (0.04\u00b0F at 77\u00b0F)\r\n\r\nResponse Time (Typical to 90%): \r\nU23-001A internal sensor: 10 minutes in air moving 1 m\/sec; \r\nU23-002A external temperature sensor: 3 minutes, 45 seconds in air moving 1 m\/sec; \r\nU23-003 and U23-004 external sensors: 3 minutes in air moving 1 m\/sec; 30 seconds in stirred water\r\n\r\nDrift: \r\nU23-001A and U23-002A: \u003C0.01\u00b0C (0.018\u00b0F) per year\r\nU23-003 and U23-004: \u003C0.1\u00b0C (0.18\u00b0F) per year\r\n\r\n\r\nRELATIVE HUMIDITY SENSOR (U23-001A, U23-002A only)\r\n\r\nOperation Range:\r\n0 to 100% RH, -40\u00b0 to 70\u00b0C (-40\u00b0 to 158\u00b0F)\r\nExposure to conditions below -20\u00b0C (-4\u00b0F) or above 95% RH may temporarily increase the maximum RH sensor error by an additional 1%\r\n\r\nAccuracy:\r\n\u00b12.5% from 10% to 90% RH typical to a maximum of \u00b13.5% including hysteresis at 25\u00b0C (77\u00b0F); below 10% and above 90% \u00b15% typical\r\n\r\nResolution: \r\n0.05%\r\n\r\nResponse Time (Typical to 90%):\r\nU23-001A: 40 minutes in air moving 1 m\/sec with protective cap\r\nU23-002A: 15 seconds in air moving 1 m\/sec\r\n\r\nDrift:\r\n\u003C1% per year typical\r\n\r\n\r\nLOGGER\r\n\r\nOperation Range:           \t-40\u00b0 to 70\u00b0C (-40\u00b0 to 158\u00b0F)\r\nReal-time Clock: \t                \u00b11 minute per month 0\u00b0 to 50\u00b0C (32\u00b0 to 122\u00b0F)\r\nBattery: \t                                1\/2 AA, 3.6 Volt lithium, user-replaceable (HP-B)\r\nBattery Life (Typical Use): \t3 years with 1 minute or greater logging interval\r\nMemory (Non-Volatile): \t        64K bytes memory (approx. 21,000 temperature and RH measurements)\r\nCables: \t                                U23-001A: No cables\r\n                                                U23-002A: One 184 cm (6 ft) PVC cable; sensor diameter 1 cm (0.38 in.)\r\n                                                U23-003: Two 184 cm (6 ft) PVC cables; sensor diameter 0.5 cm (0.20 in.)\r\n                                                U23-004: One 184 cm (6 ft) PVC cable; sensor diameter 0.5 cm (0.20 in.)\r\nEnvironmental Rating: \t        Electronics housing is NEMA 6P equivalent (tolerant of brief submergence);\r\n                                                Units with RH sensors are NEMA 4 equivalent (splash-resistant)\r\nLaunch Modes: \t                Immediate start; delayed start\r\nLogging Interval: \t                Fixed-rate or multiple logging intervals, with up to 8 user-defined logging intervals and durations; logging\r\n                                                intervals from 1 second to 18 hours\r\nOffload Modes: \t                Offload while logging; stop and offload\r\nBattery Indication: \t                Battery voltage can be viewed in status screen and optionally logged in datafile. Low battery indication in \r\n                                                datafile.\r\nWeight: \t                                U23-001A: 57 g (1.5 oz); U23-002A: 118 g (3.1 oz); U23-003: 138 g (3.7 oz); U23-004: 102 g (2.7 oz)\r\nDimensions: \t                        Housing measures 10.2 \u00d7 3.8 cm (4.0 \u00d7 1.5 in.)","dateRange":{"from":null,"to":null},"keywords":[{"label":"air temperature","uri":null},{"label":"relative humidity","uri":null}]},"geographic":{"coordinates":"POINT (11.03123 46.864005)","trajectory":null,"elevation":{"value":2252,"unit":"msl"}},"observation":{"sensorType":{"label":"meteorological Station","uri":null},"resultAcquisitionSource":null,"observedProperty":[{"property":"air humidity","unitOfMeasurement":"nA"},{"property":"air temperature","unitOfMeasurement":"nA"}]}}}