Most barometric pressure sensors measure the absolute pressure of a location and do not account for the elevation above sea level. Since barometric pressure is conventionally reported (in weather reports, etc.) as an adjusted value referenced to sea level elevation, this may cause readings to appear artificially low, particularly at high elevations. To reference sensor […]
Sample Interval: the number of minutes between each reading taken by sensors connected to a data logger. The sample interval can’t be greater than the log interval. Log Interval: the number of minutes between each logging of readings. If the log interval is equal to the sample interval, there will be one reading logged. If […]
The Vaisala WXT520 must be installed vertically with the arrow on its bottom plate pointing North for accurate measurements. Mount the sensor as needed on a pipe or mounting arm: Note: Make sure that the arrow on the sensor’s bottom plate is pointing North. With the arrow pointing toward North, the Vaisala WXT520 […]
In certain cases, it may be necessary to know the signals sent through a sonde connector cable – from the sonde connector through the NexSens’ UW Plug and into a submersible data logger. Information on pins and corresponding signals is below. REV: 13G18
Analog sensors require a millivolt (mV) reading in order to determine an accurate output. To find these readings, follow the process below. 1. Open iChart without a project file. 2. Select Advanced|iSIC|iSIC from the menu bar. 3. Select the appropriate communication under PC Settings. 4. Type the address of the data logger and click Connect. 5. Click the Analog tab. […]
YSI Sondes can be used with iChart software as sensors connected through an iSIC data logger or as ‘standalone’ devices. When used without an iSIC, the time and date of a sonde needs to correspond to all other data loggers in the same iChart project file and to the PC to in order to display […]
NexSens iChart software is used to control iSIC data loggers and all connected devices. The software also includes many features, such as device disabling. This feature can be used to save power or to disconnect power while waiting for service. 1. Open iChart with a current project. 2. In the navigation panel on the left, […]
The sensor offset is used to adjust the range of a sensor if the current range is not acceptable. A sensor offset can also be used to counteract irregularities in non-standard manufacturing. For example, if a wind sensor is designed so north is 0 degrees but collected data always shows north as 5 degrees, then […]
When adding any analog sensor, a scaling factor must be entered to allow for accurate readings. All LI-COR sensors come with a “Certificate of Calibration” and it is on this sheet that the correct scaling factor can be found. The scaling value will be entered in the “Smart Sensor Properties” window when adding the sensor […]
While trying to diagnose a connection problem, battery voltage is often the first area to check. When communication cannot be established, measuring the voltage using a multimeter is the best solution. Measuring the voltage on a receptacle port Unplug any attached cables from the receptacle port. Set the voltmeter to read DC voltage in the […]
