Tech Notes

Category: Communications
Title Category Created
A simple method using underwater epoxy to permanently install temperature sensors in mountain streams Communications 3/26/2015
Cellular (GSM) Amplifier/Repeater/Extender Communications 12/21/2016
H21-USB Driver Resources Communications 12/8/2016
I cannot connect to my new HOBO MX logger - or My existing logger says it's out of range. Communications 2/15/2017
International User-Supplied SIM Modules and the HOBO RX3000 Communications 3/21/2017
It is taking more than a minute to read out my MX logger. Is this normal? Communications 9/4/2014
Java update recently and HOBOware won't open? Communications 9/16/2015
Lost connection while setting up MX logger. Will it still start? Communications 9/4/2014
Optic data logger not recognized by HOBOware using Windows 8.1 or Windows 10 Communications 8/23/2016
Optic logger communication problems Communications 4/24/2013
Pendant Optics Communications 6/13/2017
Proper Coupler Seating, BASE-U-4 (Optic Base station) and the U-DTW-1 (Waterproof Shuttle) Communications 6/13/2017
Troubleshooting Bluetooth Low Energy (BLE) Communications Problems on Android Devices Communications 11/2/2016
Using Keyspan USB-to-Serial Adapter with Onset software other than BoxCar® Pro 4.3 Communications 4/23/2013
Using Onset data loggers if computer has USB ports and no serial port Communications 4/22/2013
Using the pHionics STs pH Sensor with a HOBO RX3000 Station Communications 7/27/2015
Waterproof shuttle for beginners Communications 4/29/2013
Wiring Diagram for p/n CABLE-PC-3.5 Serial Communications Cable Communications 11/1/2016
ZW (Zigbee 802.15.4) Radio Channels vs WiFi (802.11) Communications 12/12/2016
Category: Data file Help
Title Category Created
Android MX2001 Bluetooth Water Level Logger: Product Issue Notification Data file Help 5/18/2017
Data loss and recovery Data file Help 4/4/2013
Sample Data - Energy Consumption, Indoor & Outdoor Temperature - HOBO H22-001 Energy Logger Data file Help 1/6/2017
Sample Data - HOBO MX1101 Temp/RH Data file Help 12/23/2016
Sample Data - HOBO MX2301 with Statistics Data file Help 12/23/2016
Sample Data - HOBO U12-012 Light Sensor Data Data file Help 1/5/2017
Sample Data - HOBO U30 Station Compressed Air Flow and Compressor Power Monitoring Data file Help 12/23/2016
Sample Data - HOBO U30 Station Monitoring Soil Moisture, Leaf Wetness, and Soil Temperature on a Green Roof Data file Help 1/5/2017
Sample Data - HOBO UX90 & Electric Hot Water Heater Runtimes Data file Help 12/23/2016
Sample Data - HOBO UX90-004 Motor On/Off - Internal Calibration Event Data file Help 12/23/2016
Sample Data - HOBO UX90-005 & -006 Light On/Off & Occupancy - Light Sensor Internal Calibration Event Data file Help 12/23/2016
Category: Firmware Help
Title Category Created
Important Note: MX Firmware Updates Firmware Help 1/31/2017
Category: General Reason
Title Category Created
10HS Volume of Sensitivity Application Note General Reason 8/9/2016
Calibrating ECH2O Soil Moisture Sensors Application Note General Reason 8/9/2016
Calibration Equations for the S‐SMC‐M005 and W‐SMC Soil Moisture Sensors Application Note General Reason 8/9/2016
CDC’s Vaccine Storage & Handling Toolkit General Reason 3/16/2017
Correcting Temperature Sensitivity of ECH2O Soil Moisture Sensors Application Note General Reason 8/9/2016
Creating a voltage divider General Reason 4/24/2013
Deploying water temp and water level loggers or developing a QAPP General Reason 4/3/2017
EC‐5 Volume of Sensitivity Application Note General Reason 8/9/2016
Extension cables on LCD data logger General Reason 4/24/2013
Frequently Asked Questions about Soil Moisture Sensors General Reason 8/9/2016
HOBO MX1101 & InTemp CX400 - Audible Alarm Sound Levels General Reason 12/8/2016
HOBO MX110X buzzer decibel (dB) output General Reason 6/16/2017
HOBO MX2001 - Cable-Ordering Guide General Reason 12/8/2016
How do I delete, erase, or clear data from my data logger's memory? General Reason 4/18/2017
How do I know if my iOS device is compatible with Onset's HOBOmobile or InTemp app? General Reason 4/27/2017
How often do temperature data loggers need recalibration and/or servicing? General Reason 4/24/2013
Modeling Available Soil Moisture Application Note General Reason 8/9/2016
MX logger not appearing in the Recently Seen/In Range list on the HOBO screen General Reason 9/4/2014
Rapid battery consumption (outdoor loggers) General Reason 4/24/2013
Soil Moisture Worksheet and Guide General Reason 8/9/2016
T-VER-E50B2 operation General Reason 11/7/2013
The effects of electroshock fishing on underwater loggers General Reason 4/24/2013
Unable to Read Out MX 2001 Logger General Reason 9/13/2016
Using Barometric Sensor Data from the HOBO® MX2001 Water Level Logger to Compensate Raw U20/U20L Data General Reason 9/9/2016
Using the Gill Instruments WindSonic Opt 3 Wind Speed and Direction Sensor with the HOBO® RX3000 Station General Reason 3/14/2016
Category: Hardware Training
Title Category Created
3-phase Wattnode product comparison Hardware Training 8/13/2013
4-20mA Current Loop Isolator Hardware Training 12/12/2016
Adding or Removing Smart Sensors from a HOBO RX3000 Station Hardware Training 5/15/2017
An alarm was tripped on my MX logger. How do I clear it? Hardware Training 9/4/2014
Checking MX logger remaining battery power and logger status with HOBOmobile instead of checking the logger LCD Hardware Training 9/4/2014
Cleaning Optic StowAway/StowAway TidbiT data loggers Hardware Training 4/24/2013
Connecting a 4-20mA to an external input Hardware Training 5/13/2013
Connecting a Thermocouple to an RX3000 Station Hardware Training 10/27/2016
Constructing a stilling well Hardware Training 3/28/2013
Data logger is shutting off prematurely Hardware Training 4/30/2013
Davis Rain Gauge (S-RGC-M002, S-RGF-M002 & S-RGE-M002) Cable Routing Hardware Training 6/2/2017
Deploying a HOBO water level data logger in salt water Hardware Training 3/28/2013
Deploying a logger in a culvert pipe Hardware Training 11/7/2013
Drying a wet circuit board Hardware Training 4/4/2013
Error #11 (Either the logger or the data file has been damaged) when downloading files from H09-002-08 Shuttle to computer Hardware Training 4/23/2013
Event data logging vs State data logging Hardware Training 4/23/2013
H21-002 (HOBO® Micro Station) battery installation Hardware Training 3/25/2013
H22-001 grounding Hardware Training 4/30/2013
HOBO U12-015 Internal Thermistor Location Hardware Training 12/12/2016
HOBO Waterproof Shuttle U-DTW-1 indicator lights Hardware Training 4/29/2013
I can't connect to MX logger in the Recently Seen/In Range list Hardware Training 9/4/2014
Installing Onset soil moisture sensors Hardware Training 8/19/2013
Internal Thermistor Location in Pendant Loggers (UA-00x) Hardware Training 12/12/2016
Judd Communications Snow Depth Sensor with the U30 Remote Monitoring Station Hardware Training 8/13/2014
Logger power failure and data loss Hardware Training 4/24/2013
Making beaded probes on a thermocouple wire Hardware Training 4/24/2013
Maximum sensor cable length Hardware Training 4/23/2013
Measure Direct Current with the HOBO RX3000 and the T-VER-H971 Transducer Hardware Training 8/21/2017
Offloading an MX logger Hardware Training 9/4/2014
Possibility of exposure to chemicals or chemical vapors Hardware Training 4/19/2013
Protecting data loggers from electrical discharge (ESD) Hardware Training 4/4/2013
RX3000 & U30 Networking, Firewall Problems Hardware Training 7/31/2013
RX3000 Battery Life Hardware Training 5/18/2017
Sample Data - HOBO RX3000 - RXMOD-A1 - Judd Snow Depth Data from HOBOlink Hardware Training 1/9/2017
Smart sensor cable fix Hardware Training 5/8/2013
Stainless steel loggers and salt water Hardware Training 11/21/2013
Stopping your data logger Hardware Training 3/25/2013
Tattletale 8 Squishy Bus conversion Hardware Training 5/8/2013
Telaire 7001 Manufacturers Manual Hardware Training 12/15/2016
The U26-001 DO Logger and Sodium Sulfite Solution U26-CAL-SOL Hardware Training 10/24/2016
Thermocouple wire material rating Hardware Training 4/24/2013
U12 input impedance Hardware Training 7/11/2013
U30 and excitation wiring with S-VIA-CM14 modules Hardware Training 5/8/2013
U30 factory default instructions Hardware Training 4/30/2013
U9 - static analysis of induction motor leakage field Hardware Training 5/8/2013
Using the In-Situ® Aqua TROLL® 100/200 Conductivity Sensor with the HOBO® RX3000 Station Hardware Training 7/25/2016
Using the Judd Communications Snow Depth Sensor with the HOBO RX3000 Station Hardware Training 4/27/2015
Waterproof shuttle for beginners (Video) Hardware Training 12/6/2013
Weather station setup Hardware Training 4/29/2013
Wireline mounting a U20 water level data logger in a well Hardware Training 3/28/2013
Wiring Diagram - Basic Weather Station with the H21-002 Micro Station Hardware Training 11/7/2016
Wiring Diagram - Connecting a Thermocouple to a ZW node Hardware Training 11/1/2016
Wiring Diagram - HOBO H22-001-S-FS-CVIA Voltage Input Logic Switch Hardware Training 2/28/2017
Wiring Diagram - HOBO RX3000 - RXMOD-A1 Voltage Input Logic Switch Hardware Training 2/28/2017
Wiring Diagram - HOBO RX3000 - Wiring Analog Sensors to the RXMOD-A1 Module Hardware Training 12/12/2016
Wiring Diagram - HOBO U30 CVIA Voltage Input Logic Switch Hardware Training 2/28/2017
Wiring Diagram - HOBO UX120-006M, U12, H08 Voltage Logic Switch Hardware Training 2/28/2017
Wiring Diagram - How to Connect Multiple Sensors to One AC-SENS-1 Power Supply Hardware Training 11/2/2016
Wiring Diagram - Measuring Compressed Air Flow with a UX120-006M Hardware Training 11/2/2016
Wiring Diagram - Monitoring 24VAC On/Off with an RX3000 Station Hardware Training 11/2/2016
Wiring Diagram - Monitoring 480V, 3-Phase AC Voltage and Current with a HOBO H22-001 Energy Logger Hardware Training 1/19/2017
Wiring Diagram - Monitoring a 3-phase Circuit using the HOBO H21-002 Micro Station and the T-VER-E50B2 Hardware Training 11/11/2016
Wiring Diagram - Monitoring a 3-Phase Circuit with the HOBO RX3000 Station and T-VER-E50B2 Hardware Training 1/6/2017
Wiring Diagram - Monitoring a DC Voltage Change with the HOBO UX120-017 and HOBO UX90-001 Hardware Training 11/15/2016
Wiring Diagram - Monitoring a Three-phase Circuit using the HOBO H22-001 Energy Logger and the T-VER-E50B2 Hardware Training 11/10/2016
Wiring Diagram - Monitoring AC Current and Voltage on a Residential Panel - UX120-006M Hardware Training 11/4/2016
Wiring Diagram - Monitoring DC Voltage and Current with the H22-001 Energy Logger Hardware Training 11/2/2016
Wiring Diagram - Monitoring DC Voltage and Current with the RX3000 Station Hardware Training 11/2/2016
Wiring Diagram - Monitoring Differential Air Pressure with a UX120-006M or ZW Hardware Training 11/1/2016
Wiring Diagram - Monitoring Differential Air Pressure with an RX3000 Hardware Training 11/1/2016
Wiring Diagram - Monitoring Energy Consumption on a Regenerative Drive AC Motor with the Energy Logger Hardware Training 11/10/2016
Wiring Diagram - Monitoring Energy in a 3-phase Circuit using the HOBO H21-002 Micro Station and the Wattnode kWh Transducer Hardware Training 11/11/2016
Wiring Diagram - Monitoring Energy with a UX120-017 and T-VER-E50B2 Hardware Training 11/4/2016
Wiring Diagram - Monitoring Motor Run-Time with the UX90-004 Motor On/Off Logger Hardware Training 11/7/2016
Wiring Diagram - Monitoring Multiple Single-Phase Circuits with the Wattnode with P3 Option Hardware Training 2/13/2017
Wiring Diagram - Monitoring Single Phase Energy using the UX90-001 and the Wattnode kWh Transducer Hardware Training 11/4/2016
Wiring Diagram - Monitoring Single-phase AC Current using the HOBO UX120-006M Hardware Training 11/11/2016
Wiring Diagram - Monitoring Three- Phase Energy using the HOBO UX90-001 and the Wattnode kWh Transducer Hardware Training 6/15/2017
Wiring Diagram - Monitoring Three-phase Energy using the HOBO H22-001 Energy Logger and the Wattnode kWh Transducer Hardware Training 11/10/2016
Wiring Diagram - Monitoring Three-phase Energy using the RX3000 Station and a Wattnode kWh Transducer Hardware Training 11/10/2016
Wiring Diagram - Monitoring Three-phase Energy using the ZW Wireless Data Node and the Wattnode kWh Transducer Hardware Training 11/10/2016
Wiring Diagram - RX3000 and 15 Temperature Sensors with S-ADAPT-6 Hardware Training 11/1/2016
Category: HOBOlink Help
Title Category Created
Sample Data - Monitoring Remote Water Level, Rainfall and Specific Conductance in a Drainage Pond HOBOlink Help 1/16/2017
Using Weather Underground with HOBO RX3000 and U30 Stations - Application Note HOBOlink Help 12/9/2016
Category: Measurement and accuracy
Title Category Created
-888.88 Data Values Measurement and accuracy 3/3/2017
A quick temp-accuracy check (ice bath) Measurement and accuracy 3/29/2013
ACT Evaluation Report on the HOBO U26 DO Logger Measurement and accuracy 12/12/2016
Altitude effects on water level data logger range Measurement and accuracy 3/28/2013
Boosting mV outputs to 0-2.5 DC outputs for use with HOBO stand-alone data loggers Measurement and accuracy 4/24/2013
Cell constant note Measurement and accuracy 9/3/2014
Determining DLI (Daily Light Integral) from PAR Measurement and accuracy 12/21/2016
Electrically Noisy or Incorrect Thermocouple Readings Measurement and accuracy 4/4/2017
How the RXMOD-A1 with HOBO RX3000 Samples Analog Data and Resolution Measurement and accuracy 5/15/2017
Light on/off data loggers recording more states than are actually occurring Measurement and accuracy 4/23/2013
MX2001 - Submersion of Upper Portion of the Logger Measurement and accuracy 12/8/2016
Rain Gauge Field Calibration Kit Measurement and accuracy 11/7/2016
Remote Water Level Monitoring Application (RX3000) Measurement and accuracy 5/8/2015
Remote Water Level Monitoring Application (U30) Measurement and accuracy 5/8/2012
Soil Monitoring Station with the HOBO Micro Station (H21-002) Measurement and accuracy 8/5/2015
Stream Temperature Monitoring with the HOBO Water Temp Pro (U22-001) Measurement and accuracy 8/5/2015
U30 Analog Inputs Measurement and accuracy 5/8/2013
Using 3rd-party barometric pressure data for compensation Measurement and accuracy 3/28/2013
Using a light intensity data logger as an inexpensive light meter Measurement and accuracy 4/24/2013
Using a water level data logger to determine stream flow Measurement and accuracy 3/28/2013
Using HOBO U24-002-C Data with the U26-001 and the DO Assistant Measurement and accuracy 3/28/2017
Verifying RH accuracy on HOBO data loggers Measurement and accuracy 5/13/2013
Why is the RH response time less for the HOBO MX2301 vs the HOBO MX2302? Measurement and accuracy 4/3/2017
Category: Software Help
Title Category Created
Can I change the groups for the data files? Software Help 9/4/2014
Data Assistant Videos on YouTube Software Help 3/16/2017
HOBO MX2303 - Two External Temp - Channel Identification Software Help 12/9/2016
HOBO U23-004 Sensor Identification Software Help 2/6/2017
HOBOnode Manager Alarm Authorization Error Software Help 1/4/2017
HOBOware Closes with No Warning or Error Software Help 7/6/2017
HOBOware heap error and aborting error work-around Software Help 8/16/2013
HOBOware Installation Error Software Help 10/24/2016
HOBOware Performance for ZW Networks Software Help 4/30/2013
How can I print a graph? Software Help 9/4/2014
How can I tell what version of Java is installed? Software Help 3/28/2013
How do I add or remove series or events from the graph? Software Help 9/4/2014
How do I view the individual data points in a list instead of a graph? Software Help 9/4/2014
How HOBOlink and the HOBO RX3000 handle Standard Time and Daylight Saving Time changes Software Help 3/14/2017
How to install a Data Assistant Software Help 3/25/2013
I changed the units in Settings, but the mini-graphs still show the old units. Can the mini-graphs show the new units? Software Help 9/4/2014
I changed the units in Settings. Why is the logger still displaying the old units? Software Help 9/4/2014
I don’t have email set up on my mobile device. What should I do if I want to email my data from my MX logger? Software Help 9/4/2014
I have installed my USB adapter, but I cannot connect to my data loggers! Software Help 7/14/2016
I switched to another app and when I returned to HOBOmobile, the HOBOs screen was blank. What should I do? Software Help 9/4/2014
I zoomed in on a graph. How do I get it back to the original view? Software Help 9/4/2014
Languages Supported by HOBOware Software Help 1/30/2017
Locking MX logger so that no one else can configure it Software Help 9/4/2014
Logging duration calculation table Software Help 4/30/2013
Logging Duration in the Launch Screen- What Does That Mean? Software Help 2/1/2017
Moving the HOBO ZW Database from One Computer to Another Software Help 3/30/2017
MX logger is listed in the wrong group. How can I change that? Software Help 9/4/2014
My device is showing too many loggers. How can I view only the loggers that I configured? Software Help 9/4/2014
My graph is blank. What happened? Software Help 9/4/2014
Resetting the password on an MX logger Software Help 9/4/2014
Sample Data - 480VAC, 3-phase Data, UX120-017_T-VER-E50B2 Software Help 11/21/2016
Sample Data - Data Logging Rain Gauge Software Help 11/21/2016
Sample Data - Derived Data Series and the T-VER-E50B2 Software Help 11/3/2016
Sample Data - HOBO MX1102 Temp, RH, and CO2 Software Help 11/21/2016
Sample Data - HOBO MX2001 BLE Water Level Data in HOBOware Software Help 11/22/2016
Sample Data - HOBO Pendant Temp Alarms Software Help 11/21/2016
Sample Data - HOBO U12-012 Temp, RH, Light, and CO2 Software Help 12/22/2016
Sample Data - HOBO U20-001-XX - Multiple Intervals Example Software Help 11/23/2016
Sample Data - HOBO UX90-001 and the Wattnode kWh Transducer, 240VAC Software Help 11/21/2016
Sample Data - Light & Occupancy Data from HOBO UX90-005 & UX90-006 Loggers Software Help 11/22/2016
Sample Data - Long-Term Outdoor Temperature vs Residential Energy Consumption Software Help 11/21/2016
Sample Data - Missing Smart Sensor -888.88 Error Software Help 11/22/2016
Sample Data - Outdoor Light - HOBO UA-002-64 Pendant Software Help 12/6/2016
Sample Data - Plug Load Data and Power Loss Software Help 11/21/2016
Sample Data - Processed HOBO U20-001-XX Water Level Data Software Help 11/22/2016
Sample Data - Processed HOBO U26-001 Dissolved Oxygen Data Software Help 11/22/2016
Sample Data - Processed U24-002 Conductivity Data Software Help 11/22/2016
Sample Data - Smart Rain Gauge Data vs Stand-alone Data Logging Rain Gauge Data Software Help 11/21/2016
Sample Data - UX120-006M and the Veris T-VER-PXU-L - Bi-Directional Pressure Software Help 11/22/2016
Shuttle Firmware_U24 Update Message in HOBOware Software Help 4/20/2017
Smart Sensor Sampling Interval Software Help 1/24/2017
SMS text messaging Software Help 5/8/2013
Statistical Logging and Battery Life Software Help 2/1/2017
U30/Hobolink account setup Software Help 5/8/2013
Unmap DTF files in Hoboware Software Help 5/8/2013
USB popup errors on Windows XP Software Help 4/23/2013
Using AirDrop® to share .hobo files Software Help 9/4/2014
Waterproof shuttle firmware update Software Help 4/30/2013
What does "SI Units" stand for in HOBOware/HOBOlink/HOBOmobile? Software Help 12/21/2016
Will H-series loggers work with HOBOware software? Software Help 6/14/2017