{"id":"sensor-pressure-flow","version":"0.3.0","classification":{"uniformat":"D3060"},"names":["Pressure or flow sensor"],"aliases":["DP sensor","differential pressure transmitter","flow meter"],"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"},{"task":"Check sensor is secure, unobstructed and in the right place","frequency":"P1Y","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":122,"checklist":"CTRL-DDC-07-01Y Sensors - Electronic"},{"task":"Check sensor voltage, current or resistance; adjust or replace if out of range","frequency":"P1Y","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":122,"checklist":"CTRL-DDC-07-01Y Sensors - Electronic"},{"task":"Check its setpoint is reasonable and matches building documents","frequency":"P1Y","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":122,"checklist":"CTRL-DDC-07-01Y Sensors - Electronic"},{"task":"Compare BAS reading with a calibrated handheld meter over five readings","frequency":"P1Y","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":122,"checklist":"CTRL-DDC-07-01Y Sensors - Electronic"},{"task":"Calibrate or replace sensors reading outside their accuracy","frequency":"P1Y","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":122,"checklist":"CTRL-DDC-07-01Y Sensors - Electronic"}],"open_questions":["No service life yet: no published source that meets the sourcing policy states one. The maintenance tasks are sourced.","Written for GSA contracted O&M in US federal buildings; job plans are generic and defer to manufacturer instructions, and the fire extinguisher plans only point to NFPA 10."],"contributors":["unfinished.one editors"],"last_reviewed":"2026-10-22","canonical_url":"https://unfinished.one/c/sensor-pressure-flow","versioned_url":"https://unfinished.one/c/sensor-pressure-flow/v/0.3.0","licence":"CC-BY-4.0","citation":"unfinished.one (2026). Pressure or flow sensor, v0.3.0. https://unfinished.one/c/sensor-pressure-flow/v/0.3.0"}