[{"sku":"MX20L","title":"HOBO MX Wireless Water Level Data Logger","subtitle":"Bluetooth data offload","variant_product_name":"HOBO MX Water Level (100 ft) Data Logger","unit_price":"425.00","brands":["HOBO"],"region":null,"service_plans":[],"parcel_length":"4.50","parcel_width":"1.50","parcel_height":"4.25","parcel_weight":"0.50","sellable":true,"published":true,"product_page_url":"\/products\/data-loggers\/mx20l","nid":"22746","product_description":"<p>The MX20L Water Level Logger brings you all the same great features as the U20L and more!<\/p><p>Integrating Bluetooth for fast and reliable data download, the MX20L logger eliminates the need to plug your logger into a base station or shuttle to offload data in the field, ensuring continuous water level and temperature monitoring. With options to measure at depth ranges of 13, 30, or 100 feet in a wide range of underwater environments, this rugged logger features 0.1% measurement accuracy, a durable polypropylene housing for use in both freshwater and saltwater, and a non-vented design for convenient and reliable deployment.<\/p><p>The MX20L comes with a magnetic activation fob that can \"wake up\" the logger to activate its Bluetooth communication for configuration and data download. The included fob comes with a lanyard to prevent losing or dropping the fob in the field. You can purchase additional activation fobs <a href=\"\/products\/accessories\/fob-1\" target=\"_blank\">HERE<\/a>.<\/p><p>This logger records absolute pressure, which is later converted to water level readings by our <a href=\"\/node\/13586\" target=\"_blank\" data-entity-type=\"node\" data-entity-uuid=\"376293db-28ae-4b1e-8d2a-71154366d7ed\" data-entity-substitution=\"canonical\">HOBOconnect software<\/a>. <span data-teams=\"true\">To compensate for barometric pressure changes, you can use another HOBO MX20L Water Level logger as a barometric reference. See our FAQ section for more information.<\/span><\/p>","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","Construction Compliance"],"brand":"HOBO","communication":"Bluetooth","compatibility_callout":["HOBOconnect"],"compatible_items":{"Accessory":{"Communications":{"items":["FOB-1"]},"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"]},"Protective_Covers_and_Boots":{"items":["HOUSING-U2X"]}}},"compliance_marks":["Conformit\u00e9 Europ\u00e9ene (CE)","Federal Communications Commission (FCC)","UK Conformity Assessed (UKCA)"],"country":"US","customers_also_bought":["MX80x","WELL-CAP-01","MX2203","MX2501"],"field_documents":[{"nid":22796},{"nid":22856}],"environment":["Outdoor","Water"],"faqs":[{"q":"How can I get a compensated barometric pressure reading?","a":"<p>The MX20L logger records absolute pressure, which is later converted to water level readings by HOBOconnect software. To compensate for barometric pressure changes, you can use another HOBO MX20L Water Level logger as a barometric reference. The barometric reference device is typically deployed in the same well or at the same location as the water level of interest, but rather than being placed in the water column, it is deployed above the water in air.<\/p><p>Since barometric pressure readings are consistent across a region (except during fast-moving weather events), you can generally use barometric pressure readings that are taken within 15 km (10 miles) of the logger or more without significantly degrading the accuracy of the compensation. This means you only need to use one MX20L logger as a barometric reference for any loggers within this range.<\/p><p> <\/p>"}],"important_information":"[custom-onset:insert-block:5471] ","logger_sensor_type":"integrated_sensors","measurement":["Absolute Pressure ","Barometric Pressure ","Water Level ","Water Temperature "],"not_a_sku":"0","parcel_status":"default","primary_measurement":"Water Temperature","product_battery":"factory_replacement","product_family_series":"MX Family","features":"<ul><li>Self-contained, non-vented design enables easy deployment<\/li><li>Ideal for use in both freshwater and saltwater environments, including wells, streams, lakes, wetlands, and tidal areas<\/li><li>Depth measurement options of up to 13, 30, or 100 feet depending on model<\/li><li>Durable ceramic pressure sensor withstands freezing<\/li><li>Streamlined data offload via Bluetooth to the free HOBOconnect app<\/li><li>HOBOconnect app provides easy extraction and visualization of water level data<\/li><li>Extended battery life up to 10 years (power-saving mode requires <a href=\"\/products\/accessories\/fob-1\" target=\"_blank\">magnetic fob to activate Bluetooth for data download<\/a>)<\/li><\/ul><p>Note: A calibration certificate is not offered for this <span lang=\"EN\">logger<\/span>. If you require a NIST-traceable calibration certificate, please see the<em> <\/em><a href=\"\/products\/data-loggers\/u20-001-01\" target=\"_blank\" rel=\"noopener\"><em><span style=\"color:blue;\" lang=\"EN\"><u>U20-001-01<\/u><\/span><\/em><\/a><em><span style=\"color:#777777;\" lang=\"EN\"><strong> <\/strong><\/span><span lang=\"EN\">(freshwater)<strong> <\/strong>or <\/span><\/em><a href=\"\/products\/data-loggers\/u20-001-01-ti\" target=\"_blank\" rel=\"noopener\"><em><span style=\"color:blue;\" lang=\"EN\"><u>U20-001-01-Ti<\/u><\/span><\/em><\/a><em><span style=\"color:blue;\" lang=\"EN\"> <\/span><span lang=\"EN\">(saltwater).<\/span><\/em><\/p>","product_price":"425.00","specifications":[{"type":"Product Specifications","revision_default":"1","revision_translation_affected":"1","field_hide_in_compare":"0","field_hide_on_specs_tab":"0","field_specification_group_label":"Pressure (Absolute) and Water Level Measurements MX20L-01","field_specification_items":[{"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_single_value":"0 to 207 kPa (0 to 30 psia); approximately 0 to 9 m (0 to 30 ft) of water depth at sea level, or 0 to 12 m (0 to 40 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_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_imperial_value":"10 to 30 psia, 32\u00b0 to 104\u00b0F","field_spec_metric_value":"69 to 207 kPa, 0\u00b0 to 40\u00b0C"}]}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Burst Pressure","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_imperial_value":"45 psia or 60 ft depth","field_spec_metric_value":"310 kPa or 18 m depth"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Water Level Accuracy*","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_single_value":"Typical error: \u00b10.1% FS, 1.0 cm (0.03 ft) Water"},{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_single_value":"Maximum error: \u00b10.2% FS, 2.0 cm (0.06 ft) Water"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Raw Pressure Accuracy**","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_single_value":"\u00b10.3% FS, 0.62 kPa (0.09 psi) Maximum error"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Resolution","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_imperial_value":"0.007 ft Water","field_spec_metric_value":"<0.02 kPa 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":"<1 second at a stable temperature; measurement accuracy also depends on temperature response time"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1"}]}]}]},{"type":"Product Specifications","revision_default":"1","revision_translation_affected":"1","field_hide_in_compare":"0","field_hide_on_specs_tab":"0","field_specification_group_label":"Pressure (Absolute) and Water Level Measurements MX20L-02","field_specification_items":[{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Operation Range","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_single_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","revision_translation_affected":"1","field_specification_label":"Factory Calibrated Range","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_single_value":"69 to 400 kPa (10 to 58 psia), 0\u00b0 to 40\u00b0C (32\u00b0 to 104\u00b0F)"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Burst Pressure","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_single_value":"500 kPa (72.5 psia) or 40.8 m (134 ft) Depth"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Water Level Accuracy*","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_single_value":"Typical error: \u00b10.1% FS, 3.0 cm (0.1 ft) Water"}]},{"type":"Product Specification - Value","revision_default":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_single_value":"Maximum error: \u00b10.2% FS, 6.0 cm (0.2 ft) Water"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Raw Pressure Accuracy**","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_single_value":"\u00b10.3% FS, 1.20 kPa (0.17 psi) Maximum error"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Resolution","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_single_value":"<0.04 kPa (0.006 psi), 0.41 cm (0.013 ft) Water"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Pressure Response Time (90%)***","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_single_value":"<1 second at a stable temperature; measurement accuracy also depends on temperature response time"}]}]}]},{"type":"Product Specifications","revision_default":"1","revision_translation_affected":"1","field_hide_in_compare":"0","field_hide_on_specs_tab":"0","field_specification_group_label":"Pressure (Absolute) and Water Level Measurements MX20L-04","field_specification_items":[{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Operation Range","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_single_value":"0 to 145 kPa (0 to 21 psia); approximately 0 to 4 m (0 to 13 ft) of water depth at sea level, or 0 to 7 m (0 to 23 ft) of water at 3,000 m (10,000 ft) of altitude"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Factory Calibrated Range","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_single_value":"69 to 145 kPa (10 to 21 psia), 0\u00b0 to 40\u00b0C (32\u00b0 to 104\u00b0F)"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Burst Pressure","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_single_value":"310 kPa (45 psia) or 18 m (60 ft) Depth"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Water Level Accuracy*","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_single_value":"Typical error: \u00b10.1% FS, 0.4 cm (0.013 ft) Water"}]},{"type":"Product Specification - Value","revision_default":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_single_value":"Maximum error: \u00b10.2% FS, 0.8 cm (0.026 ft) Water"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Raw Pressure Accuracy**","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_single_value":"\u00b10.3% FS, 0.43 kPa (0.063 psi) Maximum error"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Resolution","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_single_value":"<0.014 kPa (0.002 psi), 0.14 cm (0.005 ft) Water"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Pressure Response Time (90%)***","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_single_value":"<1 second at a stable temperature; measurement accuracy also depends on temperature response time"}]}]}]},{"type":"Product Specifications","revision_default":"1","revision_translation_affected":"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","revision_translation_affected":"1","field_specification_label":"Operation Range","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_imperial_value":"-4\u00b0 to 122\u00b0F","field_spec_metric_value":"-20\u00b0 to 50\u00b0C"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Accuracy","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_imperial_value":"\u00b10.36\u00b0F from 32\u00b0 to 122\u00b0F","field_spec_metric_value":"\u00b10.2\u00b0C from 0\u00b0 to 50\u00b0C "}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Resolution","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","revision_translation_affected":"1","field_spec_imperial_value":"0.18\u00b0F at 77\u00b0F","field_spec_metric_value":"0.10\u00b0C at 25\u00b0C"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Response Time (90%)","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_value":"10 minutes in water (typical)"}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Stability (Drift)","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_imperial_value":"0.18\u00b0F per year","field_spec_metric_value":"0.1\u00b0C per year"}]}]}]},{"type":"Product Specifications","revision_default":"1","revision_translation_affected":"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":"Wireless Standard","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_single_value":"Bluetooth 5 LE"}]}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Transmission Range","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_single_value":"Approximately 30.5 m (100 ft) line-of-sight"}]}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Radio Power","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_single_value":"1mW (0 dBm)"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"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_single_value":"\u00b11 minute per month 0\u00b0 to 50\u00b0C (32\u00b0 to 122\u00b0F)"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Battery","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_single_value":"2\/3 AA, 3.6 Volt lithium, factory-replaceable"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Battery Life (Typical Use)","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_single_value":"3 years with 1-minute logging and Bluetooth always on"}]},{"type":"Product Specification - Value","revision_default":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_single_value":"7 years with 1-minute logging and Bluetooth off and LED off"}]},{"type":"Product Specification - Value","revision_default":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_single_value":"10 years with 5-minute logging and Bluetooth off and LED off"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Battery Indication","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_value":"Battery status shown in HOBOconnect app (approximate)"}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Memory (Non-volatile)","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_value":"Approximately 400,000 sets of pressure and temperature measurements"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Data Download Time (with Bluetooth 5+ devices)","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"Approximately 3.5 minutes; 100,000 measurements < 1 minute"}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Weight","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_single_value":"Approximately 154 g (5.43 oz) in air"},{"type":"Product Specification - Measurement","revision_default":"1","field_spec_single_value":"Approximately 53.9 g (1.9 oz) in fresh water"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Dimensions","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_value":"3.18 cm (1.25 inches) diameter, 15.24 cm (6.0 inches) length; mounting hole 6.3 mm (0.25 inches) diameter"}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Wetted Materials","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_value":"Polypropylene housing and lanyard; Viton and Buna-N O-rings; ceramic sensor in acetal end cap; stainless steel screws suitable for saltwater"}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Logging Modes","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_value":"Fixed-interval (normal or statistics), burst or multiple intervals with up to 8 user-defined intervals and durations; logging intervals from 1 second to 18 hours. Refer to the HOBOconnect User\u2019s Guide for details."}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Start Modes","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_value":"Immediate, next interval, date & time, button start (fob or app)"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Stop Modes","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_single_value":"Memory full, never stop (overwrite oldest data), date & time, or after set logging period"}]}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Pause","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_single_value":"Pause and restart with HOBOconnect app"}]}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Alarms","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_single_value":"Log high- or low-alarm events; alarm status shown in HOBOconnect app"}]}]},{"type":"Product Specifications - Item","revision_default":"1","revision_translation_affected":"1","field_specification_label":"Environmental Rating","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","revision_translation_affected":"1","field_specification_value":"IP68"}]}]},{"type":"Simple text","revision_default":"1","revision_translation_affected":"1","field_description":"<div style=\"display:inline-block;\"><div class=\"WordSection1\"> <\/div><p>* Water Level Accuracy: With accurate reference water level measurement, known water density, accurate barometric compensation data, and a stable temperature environment.<\/p><p>** Raw Pressure Accuracy: Absolute pressure sensor accuracy includes all sensor drift, temperature, and hysteresis-induced errors.<\/p><p>*** Changes in Temperature: Allow 20 minutes in water to achieve full temperature compensation of the pressure sensor. 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MX20L
HOBO MX Wireless Water Level Data Logger
The MX20L Water Level Logger brings you all the same great features as the U20L and more!
Integrating Bluetooth for fast and reliable data download, the MX20L logger eliminates the need to plug your logger into a base station or shuttle to offload data in the field, ensuring continuous water level and temperature monitoring. With options to measure at depth ranges of 13, 30, or 100 feet in a wide range of underwater environments, this rugged logger features 0.1% measurement accuracy, a durable polypropylene housing for use in both freshwater and saltwater, and a non-vented design for convenient and reliable deployment.
The MX20L comes with a magnetic activation fob that can "wake up" the logger to activate its Bluetooth communication for configuration and data download. The included fob comes with a lanyard to prevent losing or dropping the fob in the field. You can purchase additional activation fobs HERE.
This logger records absolute pressure, which is later converted to water level readings by our HOBOconnect software. To compensate for barometric pressure changes, you can use another HOBO MX20L Water Level logger as a barometric reference. See our FAQ section for more information.