{"id":"sensor-temperature","version":"0.2.0","classification":{"uniformat":"D3060"},"names":["Temperature sensor"],"aliases":["temp sensor","RTD","thermistor"],"service_life":{"median_years":15,"range_years":[5,15],"range_basis":"source_spread"},"pm_tasks":[{"task":"Check all sensors (temperature, pressure, humidity, flow) read expected values","frequency":"P6M","reference":"Operations & Maintenance Best Practices: A Guide to Achieving Operational Efficiency, Release 3.0","url":"https://www.energy.gov/sites/default/files/2020/04/f74/omguide_complete_w-eo-disclaimer.pdf","page":204,"checklist":"9.6.10 Building Controls Checklist"},{"task":"Calibrate all sensors (temperature, pressure, humidity, flow)","frequency":"P1Y","reference":"Operations & Maintenance Best Practices: A Guide to Achieving Operational Efficiency, Release 3.0","url":"https://www.energy.gov/sites/default/files/2020/04/f74/omguide_complete_w-eo-disclaimer.pdf","page":204,"checklist":"9.6.10 Building Controls Checklist"}],"basis":[{"type":"public_document","life_type":"planning","title":"CNA e-Tool Estimated Useful Life Table","by":"U.S. Department of Housing and Urban Development","url":"https://www.hud.gov/sites/documents/eul_for_cna_e_tool.pdf","page":13,"code":"HUD CNA 3.4.3.2.2","label":"Heat sensors","years":15,"note":"Same life for family and elderly properties. US multifamily housing."},{"type":"public_document","life_type":"planning","title":"CNA e-Tool Estimated Useful Life Table","by":"U.S. Department of Housing and Urban Development","url":"https://www.hud.gov/sites/documents/eul_for_cna_e_tool.pdf","page":13,"code":"HUD CNA 3.4.3.2.3","label":"Outdoor temperature sensor","years":10,"note":"Same life for family and elderly properties. US multifamily housing."},{"type":"public_document","life_type":"design","title":"Design standards: employer's requirements – Technical Manual (ER-DFE-XX-XX-T-X-0201, revision A-C01)","by":"Department for Education (England)","url":"https://assets.publishing.service.gov.uk/media/6971f649d8adeaf266040501/ER-DFE-XX-XX-T-X-0201-Technical_Manual-A-C01.pdf","page":323,"code":"5.11.4","label":"Sensors and actuators: 15 years","years":15,"note":"Printed page 323. BMS sensors and actuators, types not stated. Minimum life expectancy (design requirement) for DfE-funded school buildings. Minimum design requirements placed on contractors for school buildings, not observed replacement ages. Section 5.1.4 (sanitaryware) refers to CIBSE Guide M Appendix 12.A1 'in general'."},{"type":"public_document","life_type":"design","title":"Design standards: employer's requirements – Technical Manual (ER-DFE-XX-XX-T-X-0201, revision A-C01)","by":"Department for Education (England)","url":"https://assets.publishing.service.gov.uk/media/6971f649d8adeaf266040501/ER-DFE-XX-XX-T-X-0201-Technical_Manual-A-C01.pdf","page":365,"code":"6.4.4","label":"Environmental sensors: 15 years","years":15,"note":"Printed page 365. Building technologies section; environmental sensors (room temperature, CO2, humidity). Minimum life expectancy (design requirement) for DfE-funded school buildings. Minimum design requirements placed on contractors for school buildings, not observed replacement ages. Section 5.1.4 (sanitaryware) refers to CIBSE Guide M Appendix 12.A1 'in general'."},{"type":"public_document","life_type":"accounting","title":"General depreciation rates (IR265), July 2021","by":"Inland Revenue (Te Tari Taake), New Zealand","url":"https://www.ird.govt.nz/-/media/project/ir/home/documents/forms-and-guides/ir200---ir299/ir265/ir265-2021.pdf","page":52,"code":"REFR","label":"Temperature probes (fixed)","years":5,"note":"Printed page 52. Fixed temperature probes in refrigeration plant. Refrigeration category. Printed DV 40%, SL 30%. Tax depreciation lives set by the Commissioner of Inland Revenue for New Zealand income tax, not engineering or asset-management lives; they are banded and often short (e.g. reticulation piping 25 years). The July 2021 edition was the newest PDF reachable; the online Depreciation Rate Finder may hold later determinations."}],"confidence":{"grade":"C","sample_size":null},"open_questions":["Every source here is a published planning, design or accounting life. None is observed replacement data."],"contributors":["unfinished.one editors"],"last_reviewed":"2026-10-22","canonical_url":"https://unfinished.one/c/sensor-temperature","versioned_url":"https://unfinished.one/c/sensor-temperature/v/0.2.0","licence":"CC-BY-4.0","citation":"unfinished.one (2026). Temperature sensor, v0.2.0. https://unfinished.one/c/sensor-temperature/v/0.2.0"}