Description Of Solinst Readout Unit (SRU) Model 4001 Dataloggers
The Solinst Readout Unit (SRU) Model 4001 is a portable device designed to easily download data from Solinst dataloggers, including Levelogger, Rainlogger and Barologger.

It offers easy data transfer directly in the field without the need for a computer, making it suitable for environmental and hydrological monitoring applications. With its intuitive interface and durable design, the SRU Model 4001 is a practical solution for efficient data monitoring.
The Solinst Readout Unit (SRU) is a field-ready device designed to take and display instant water level readings from a deployed Solinst datalogger, as well as allowing simple download of stored data.
About Solinst Readout Unit (SRU) Model 4001 Dataloggers
The Solinst Readout Unit (SRU) is an in-field device designed to take and display instant water level readings from a deployed Solinst datalogger.
When connected, you can also select a real-time sampling rate and start a real-time monitoring session independent of the datalogger’s internal logging mode. Real-time logs can be saved in the SRU memory. The SRU has an internal barometer, which provides the option of showing and saving real-time water level readings corrected to ambient air pressure.
The SRU also functions as a data download and storage device. It has a robust flash memory allowing you to download and save multiple log files from a number of dataloggers. Saved log files can be viewed on the SRU and transferred to a PC. The SRU provides access to useful information about the connected datalogger’s status, including battery level, memory, serial number, firmware version, and logging mode, as well as the SRU status.
How the Solinst Readout Unit (SRU) Model 4001 Dataloggers Works
The SRU connects to a Levelogger’s Direct Read Cable, a LevelVent Wellhead, or AquaVent Wellhead connector cable.
Using push-buttons, it is easy to power-on and navigate through all SRU menu options. The LCD screen contrast is adjustable to ensure easy viewing in any field condition.
To transfer data files to a PC, the SRU connects using a USB cable. The SRU has upgradable firmware, which allows for future improvements and compatibility with new dataloggers. Note that separate Levelogger PC Software is used to download, view, export, delete data and set up.
Features and Benefits of the Solinst Readout Unit (SRU) Model 4001 Dataloggers
- Convenient and portable
- Clear LCD screen for viewing readings and setting up real-time logging
- Connects to a Levelogger’s Direct Read Cable, or LevelVent or AquaVent Wellhead
- Real-time logging and data download does not interrupt running datalogger
- Useful when conducting aquifer tests
- Quick way to check the status of a deployed datalogger
- Uses one replaceable 9V battery
- User-upgradable firmware
Application of Solinst Readout Unit (SRU) Model 4001 Dataloggers
- Groundwater Monitoring: Suitable for collecting water level and water quality data in hydrogeological applications.
- Rainfall Monitoring: Used with Rainlogger to record rainfall patterns at various locations.
- Environmental Project: Supports environmental monitoring studies such as water resource management and pollution mitigation.
- Academic Research: Assist in field data collection for scientific research related to hydrology and geography.
Specification of Solinst Readout Unit (SRU) Model 4001 Dataloggers
Materials: | ABS enclosure, 316 stainless steel connector, silicone rubber cover |
Operating Temperature: | -20ºC to +50ºC |
IP Rating: | IP64 (dust and splash resistant) |
Battery: | Standard 9V replaceable battery |
Battery Life: | Up to 2 years |
Memory: | 21 full LTC logs or 19 full LT logs (~1.8 million LTC readings or 2.7 million LT readings) |
Size and Weight: | 8.9 cm x 3.2 cm x 14.5 cm (3.5″ x 1.3″ x 5.7″) 351 grams ( 12.4 ounces) |
Internal Barometer Accuracy: | ± 0.2 kPa |
Compatible With: | 5 Series and Edge Series Solinst dataloggers |
Levelogger 5 App Interface
A wireless alternative to the SRU with datalogger setup features, is the Levelogger 5 App Interface that uses Bluetooth® technology to connect all Solinst dataloggers to your smart device using the Solinst Levelogger App.
Download and save Multiple Datalogger Files
The SRU is also a data download and storage device that has enough memory to save 20 full LTC logs or 18 full LT logs (~1.8 million LTC readings or 2.7 million LT readings). Transfer files to a PC by connecting the SRU using a USB cable. Files are downloaded and opened using Solinst Levelogger Software.
Source: www.solinst.co
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