[ { "sku": "u20-001-02", "title": "HOBO 100-Foot Depth Water Level Data Logger", "subtitle": null, "variant_product_name": "HOBO 100-Foot Depth Titanium Water Level Data Logger", "unit_price": "659.00", "brands": [ "HOBO" ], "region": null, "service_plans": [], "parcel_length": "3.25", "parcel_width": "3.25", "parcel_height": "8.00", "parcel_weight": "0.75", "sellable": true, "published": true, "product_page_url": "/products/data-loggers/u20-001-02", "nid": "12836", "product_description": "\u003Cp\u003EFeaturing high accuracy at a great price and ease-of-use, with no cumbersome vent tubes or desiccants to maintain, this logger is ideal for recording water level and temperature up to 100-ft depths.  Available in stainless-steel for shallow wells, streams, lakes, and freshwater wetlands and in titanium for saltwater/brackish wetlands and tidal areas.\u003C/p\u003E\u003Cdrupal-media data-entity-type=\"media\" data-entity-uuid=\"9c6d3d30-fef7-4233-a9de-d8f95fd3c83d\" data-align=\"center\"\u003E \u003C/drupal-media\u003E", "applications": [ "Environmental Research & Protection", "Environmental Compliance", "Green Space", "Ecology", "Water Resource Management", "Aquatic Ecology", "Water Quality & Compliance", "Hydrology & Groundwater Monitoring", "Watershed Management", "Wetland & Stormwater", "Dam Management", "Building Performance", "Construction Compliance" ], "brand": "HOBO", "communication": "Optic/USB", "compatible_items": { "Accessory": { "Carrying_Case": { "items": [ "U20-CASE-1" ] }, "Data_Offload_Base_Stations_Shuttles_Couplers": { "items": [ "COUPLER2-B" ] }, "Protective_Enclosures": { "items": [ "HOUSING-U2X" ] }, "Stainless_Steel_Cable_Crimps": { "items": [ "CABLE-1-300", "CABLE-1-50", "CABLE-1-CRIMP" ] }, "Well_Caps": { "items": [ "WELL-CAP-01", "WELL-KIT-S", "84-000009", "84-000010", "84-000012" ] }, "Compliance_Certificates": { "items": [ "COMPLIANCE CERT" ] }, "Accessories": { "items": [ "ME-BP" ] } }, "Required Communications": { "Data_Offload_Base_Stations_Shuttles_Couplers": { "items": [ "BASE-U-4", "U-DTW-1" ] } }, "Required Software": { "Graphing_Analysis": { "items": [ "BHW-PRO-DLD", "BHW-PRO-USB" ] } } }, "compliance_marks": [ "Conformité Européene (CE)" ], "country": "US", "customers_also_bought": [ "MX2001", "RG3", "U-DTW-1", "U26-001" ], "field_documents": [ { "nid": 9726 }, { "nid": 10381 } ], "environment": [ "Outdoor", "Water" ], "important_information": "Requires HOBOware Pro software and either a U-DTW-1 Waterproof Shuttle or the Base-U-4 Optic USB Base Station for configuration and data offload. Please see compatible items below.", "logger_sensor_type": "integrated_sensors", "measurement": [ "Absolute Pressure ", "Barometric Pressure ", "Water Level ", "Water Temperature " ], "media_remote_videos": [ "https://www.youtube.com/watch?v=Y0JieSX7aq0" ], "not_a_sku": "0", "parcel_status": "default", "product_battery": "factory_replacement", "product_family_series": "U20", "features": "\u003Cul\u003E\n\t\u003Cli\u003ELightning protection - no long signal wires, and electronics are shielded in a metal housing\u003C/li\u003E\n\t\u003Cli\u003EHOBOware Pro software provides easy conversion to accurate water level reading, fully compensated for barometric pressure, temperature, and water density\u003C/li\u003E\n\t\u003Cli\u003EMultiple-rate sampling allows faster sampling at critical times such as when pumping starts or stops\u003C/li\u003E\n\t\u003Cli\u003EAvailable in four depth ranges\u003C/li\u003E\n\t\u003Cli\u003EIdeal for use in wells, streams, lakes, wetlands, and tidal areas\u003C/li\u003E\n\t\u003Cli\u003ENo-vent-tube design for easy reliable deployment\u003C/li\u003E\n\t\u003Cli\u003EAvailable in stainless and titanium versions\u003C/li\u003E\n\t\u003Cli\u003EDurable ceramic pressure sensor\u003C/li\u003E\n\t\u003Cli\u003E3-point NIST-traceable calibration certificate included\u003C/li\u003E\n\u003C/ul\u003E\n", "specifications": [ { "type": "Product Specifications", "revision_default": "1", "field_hide_in_compare": "0", "field_hide_on_specs_tab": "0", "field_specification_group_label": "Pressure and Water Level Measurements U20-001-02 and U20-001-02-Ti", "field_specification_items": [ { "type": "Product Specifications - Item", "revision_default": "1" }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Operation Range", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "0 to 400 kPa (0 to 58 psia); approximately 0 to 30.6 m (0 to 100 ft) of water depth at sea level, or 0 to 33.6 m (0 to 111 ft) of water at 3,000 m (10,000 ft) of altitude" } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Factory Calibrated Range", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "69 to 400 kPa (10 to 58 psia), 0° to 40°C (32° to 104°F)" } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Burst Pressure", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "500 kPa (72.5 psia) or 40.8 m (134 ft) depth" } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Water Level Accuracy*", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "Typical error: ±0.05% FS, 1.5 cm (0.05 ft) water" }, { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "Maximum error: ±0.1% FS, 3 cm (0.1 ft) water" } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Raw Pressure Accuracy**", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "±0.3% FS, 1.20 kPa (0.17 psi) maximum error" } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Resolution", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "\u003C0.04 kPa (0.006 psi), 0.41 cm (0.013 ft) water" } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Pressure Response Time (90%)***", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "\u003C1 second; measurement accuracy also depends on temperature response time" } ] } ] }, { "type": "Product Specifications", "revision_default": "1", "field_hide_in_compare": "0", "field_hide_on_specs_tab": "0", "field_specification_group_label": "Temperature Measurements (All Models)", "field_specification_items": [ { "type": "Product Specifications - Item", "revision_default": "1" }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Operation Range", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_measurement": [ { "type": "Product Specification - Measurement", "revision_default": "1", "field_spec_imperial_value": "-4° to 122°F", "field_spec_metric_value": "-20° to 50°C " } ] } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Accuracy", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "±0.44°C from 0° to 50°C (±0.79°F from 32° to 122°F), see Plot A in manual" } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Resolution", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "0.10°C at 25°C (0.18°F at 77°F), see Plot A in manual" } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Response Time (90%)", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "5 minutes in water (typical)" } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Stability (Drift)", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "0.1°C (0.18°F) per year" } ] } ] }, { "type": "Product Specifications", "revision_default": "1", "field_hide_in_compare": "0", "field_hide_on_specs_tab": "0", "field_specification_group_label": "Logger", "field_specification_items": [ { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Real-time Clock", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_measurement": [ { "type": "Product Specification - Measurement", "revision_default": "1", "field_spec_imperial_value": "32° to 122°F", "field_spec_metric_value": "± 1 minute per month 0° to 50°C " } ] } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Battery", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "2/3 AA, 3.6 Volt lithium, factory-replaceable" } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Battery Life (Typical Use)", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "5 years with 1 minute or greater logging interval" } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Memory (Non-volatile)", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "64K bytes memory (approx. 21,700 pressure and temperature samples)" } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Weight", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "Stainless steel models: approximately 210 g (7.4 oz)" }, { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "Titanium models: approximately 140 g (4.8 oz)\"" } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Dimensions", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "2.46 cm (0.97 inches) diameter, 15 cm (5.9 inches) length; mounting hole 6.3 mm (0.25 inches) diameter" } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Wetted Materials", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "316 stainless steel, Viton® o-rings, acetyl cap, ceramic sensor" } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Logging Interval", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "Fixed-rate or multiple logging intervals, with up to 8 user-defined logging intervals and durations; logging intervals from 1 second to 18 hours. Refer to the HOBOware software manual." } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Launch Modes", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "Immediate start and delayed start" } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Offload Modes", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "Offload while logging; stop and offload" } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Battery Indication", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "Battery voltage can be viewed in status screen and optionally logged in datafile. Low battery indication in datafile." } ] }, { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "Environmental Rating", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_value": "IP68" } ] } ] }, { "type": "Product Specifications", "revision_default": "1", "field_hide_in_compare": "0", "field_hide_on_specs_tab": "0", "field_specification_group_label": "BLANK", "field_specification_items": [ { "type": "Product Specifications - Item", "revision_default": "1", "field_specification_label": "BLANK", "field_specification_values": [ { "type": "Product Specification - Value", "revision_default": "1", "field_specification_measurement": [ { "type": "Product Specification - Measurement", "revision_default": "1", "field_spec_single_value": "* Water Level Accuracy: With accurate reference water level measurement, known water density, accurate Barometric Compensation Assistant data, and a stable temperature environment." } ] }, { "type": "Product Specification - Value", "revision_default": "1", "field_specification_measurement": [ { "type": "Product Specification - Measurement", "revision_default": "1", "field_spec_single_value": "** Raw Pressure Accuracy: Absolute pressure sensor accuracy includes all sensor drift, temperature, and hysteresis-induced errors." } ] }, { "type": "Product Specification - Value", "revision_default": "1", "field_specification_measurement": [ { "type": "Product Specification - Measurement", "revision_default": "1", "field_spec_single_value": "*** Changes in Temperature: Allow 10 minutes in water to achieve full temperature compensation of the pressure sensor. Maximum error due to rapid thermal changes is approximately 0.5%." } ] } ] } ] } ], "product_status": "active", "product_type": "Data Loggers", "product_variants": { "variation_label": "Installation environment", "items": [ { "sku": "U20-001-02", "title": "HOBO 100-Foot Depth Fresh Water Level Data Logger", "variation": "Freshwater", "variant_status": "active", "price": "659.00", "non_shippable": false }, { "sku": "U20-001-02-Ti", "title": "HOBO 100-Foot Depth Titanium Water Level Data Logger", "variation": "Saltwater", "variant_status": "active", "price": "799.00", "non_shippable": false } ] }, "search_keys": "water level", "solution": [ "Stand-alone Data Loggers ", "Stand-alone Optical Data Loggers ", "Waterproof Stand-alone Data Loggers " ], "summary_cta": "Get your same trusted data via Bluetooth—No shuttles, for less!Upgrade to an MX20 today!, basic_html", "warranty": "1", "warranty_premium": "1", "whats_in_the_box": "HOBO U20-001-02 or U20-001-02-Ti Water Level Data Logger (100-foot depth)", "digital_item": "0" }, [ { "nid": "9726", "uuid": "74531def-2a20-4cd3-8554-47d79d271d9d", "vid": "137616", "langcode": "und", "revision_timestamp": "1778092860", "status": "1", "title": "HOBO U20 Water Level Logger (U20-001-0x and U20-001-0x-Ti) User's Manual", "created": "1224677983", "changed": "1778092860", "promote": "0", "sticky": "0", "default_langcode": "1", "revision_default": "1", "revision_translation_affected": "1", "path": { "alias": "/resources/documentation/12315-u20-manual", "pid": "19096", "langcode": "und" }, "archive_resource": "0", "associated_products": [ "KIT-D-U20-01", "KIT-D-U20-02", "KIT-D-U20-04", "KIT-S-U20-01", "KIT-S-U20-02", "KIT-S-U20-04", "U20-001-01", "U20-001-02", "U20-001-03", "U20-001-04" ], "brand": "HOBO", "documentation_files": { "English": "https://dev-d9.onsetcomp.com/sites/default/files/2026-05/12315-K%20U20%20Manual.pdf" }, "documentation_hoboconnect": "0", "documentation_id": "12315-U20-Manual", "files": { "documentation_image": "https://dev-d9.onsetcomp.com/sites/default/files/resources/HOBO-U20-Water-Level-Data-Logger-U20-001-02_1.jpg", "media_image": "https://dev-d9.onsetcomp.com/sites/default/files/resources/HOBO-U20-Water-Level-Data-Logger-U20-001-02_1.jpg" }, "documentation_intemp_app": "0", "documentation_is_datasheet": "0", "hoboconnect_docs_sorting": "0", "hobomobile_docs_sorting": "0", "intemp_cx_docs_sorting": "0", "resource_type": "Documentation" }, { "nid": "10381", "uuid": "5cf7fe9d-32fc-4a22-8b18-6e0c05ec32af", "vid": "11226", "langcode": "und", "revision_timestamp": "1645725698", "status": "1", "title": "HOBO® U20 Water Level (U20-001-0x and U20-001-0x-Ti) Logger Quick Start", "created": "1520624862", "changed": "1645725698", "promote": "0", "sticky": "0", "default_langcode": "1", "revision_default": "1", "revision_translation_affected": "1", "path": { "alias": "/resources/documentation/22139-man-u20-qsg", "pid": "21011", "langcode": "und" }, "archive_resource": "0", "associated_products": [ "U20-001-01", "U20-001-02", "U20-001-03", "U20-001-04" ], "brand": "HOBO", "documentation_files": { "English": "https://dev-d9.onsetcomp.com/sites/default/files/2023-03/22139-C%20MAN-U20-QSG-web.pdf" }, "documentation_id": "22139-MAN-U20-QSG", "documentation_is_datasheet": "0", "documentation_short_title": "U20 Water Level Logger Quick Start Guide", "resource_type": "Documentation" } ] ]