RS-525LE – Remote data logger
Solar powered data logger
The ML-525 Lite Edition outdoor data logger, housed in a weatherproof enclosure, is a compact, low-power, and cost-effective device primarily targeting agriculture featuring a built-in LTE-M and NB-IoT cellular modem. It complies with the CE Radio Equipment Directive (RED) 2014/53/EU. It includes an internal temperature and humidity sensor, 112MB SLC flash ring-buffer, eSIM and a nano SIM card slot.
Equipped with two serial ports, the data logger can acquire measurements from SDI-12 or MODBUS-compatible sensors. It also features two digital inputs, enabling connection of devices such as a tipping bucket rain gauge or flow meter. Additional or application-specific inputs and outputs can be added using internal stackable option boards.
The RS-525LE-PV is powered from one 18650 3.2V LiFePO4 battery charged with an 1Wp integrated solar panel.
Cost effective data logger primarily targeting agriculture
Provided with 2 serial ports to acquire measurements from SDI-12 or MODBUS compatible sensors.
2 digital inputs, enabling connection of devices such as a tipping bucket rain gauge or flow meter
Up to 20 mathematical channels are available to calculate meaningful engineering values derived from sensor input values
Cost efficient data logging solution
A self providing monitoring station
Equipped with the integrated solar panel a complete self providing remote monitoring station can be arranged, all you need is a logger and applicable sensor(s). This self providing cellular logger is costs saving, because you don’t need: a) solar panels, b) big batteries, c) cellular modem and d) encapsulating cabinet.
Please contact us or one of our distributors for product inquiries.
RS-525LE remote data logger features
- Data logging
› 1 second to 1 day intervals
› regular, alarm and independent intervals
› Up to 100 parameter channels
› 112MB industrial SLC flash ring-buffer, 512kB program storage, 160kB SRAM (runtime memory)
- Data push
› 1 minute to 1 day intervals
› regular and alarm intervals (direct push on alarm raise or fall)
› native TXT, JSON, CSV, JPG (pictures) or Sparkplug B payload format
› MQTT, HTTP, FTP1), e-Mail1) or proprietary-TCP
› 8k certificate memory (max. 3 different CA certificates)
› Push to up to 6 different servers of your choosing
- Alarming
› Alerts by SMS, e-Mail and MQTT(S)
- 2x digital inputs (0..5V)
› State mode (on/off)
› Alarm mode
› Trigger mode (measurement, data push, camera picture)
› Pulse counter mode (max 10kHz), e.g. to connect a flow meter, rain gauge or reed relay based wind speed sensor
› Activity time counter mode, e.g. to monitor pump running hours
- 2x serial ports for connecting external sensors (1x RS-485 and 1x SDI-12)
› SDI-12: Read-out of up to 15 devices with up to 20 parameters per device using aC!, aM!, aCx! or aMx! commands
› MODBUS: Read-out value registers from MODBUS (RTU/ASCII) slave devices
› NMEA-0183: Sensors outputting standard and custom sentences
› ASCII: Sensors outputting human readable lines of numeric values
- Internal sensors
› Battery voltage and rest capacity
› Internal enclosure temperature and relative humidity
› GSM signal quality
- Additional or specialized inputs/outputs can be added via internal stackable option boards
- 20x calculation channels, to derive engineering values from sensed values using mathematical operators and functions (e.g. cos, sin, atan2, ln, sqrt). For example the use case to calculate dissolved oxygen in saline water.
- 10x aggregation channels, min/max, average, gust, std dev, rate of change and up to 3 different percentiles sampled at 1Hz max. for example the use case to record 2 or 10 minute wind speed averages sampled at 1Hz.
- FTP with TLS-Explicit, SMTP with TLS-Implicit
RS-525LE remote data logger specifications
- Built-in cellular data modem
› LTE-M (LTE category M2), NB-IoT (LTE category NB2), 3GPP release 14 compliant
› IPv4, IPv6, NTP, TLS (1.1, 1.2 or 1.3), SNI
› Max transmission power: LTE 21dBm
› LTE bands: 1,2,3,4,5,8,12,13,18,19,20,25,26,27,28,66,71 & 85
› eSIM, data only with about 500MB for 5 years at least2)
› Nano SIM-CARD slot.
› Integrated LTE antenna, external antenna optional.
- Power consumption
› 30mA@3.6V average operating3) current during a duty cycle of less than 1 sec4) per log interval.
› 250mA@3.6V average operating current during 20..60 sec. data transfer
› <30uA@3.6V sleep current
› 3..21V switchable power output to power external sensors (max. 200mA@12V)
› Configurable daily operation time bracket to limit power consumption (e.g. 07:00AM to 20:00PM or 21:00PM – 06:00AM)
- Power supply
› 1Wp solar panel, ETFE encapsulated and integrated in cover
› 3.2V integrated LiFePO45) charger
› 1x 18650 3.2V LiFePO4 battery holder
- Enclosure
› IP68/69 (24h@3m without cable entries)
› UV stabilized polycarbonate
› 150x121x131mm, 450g
- Optional pole mounting bracket
- Wide temperature operating range –30°C +75°C
2) The eSIM remains the property of the manufacturer and is provided for convenience only. If it does not operate as expected, no claims for compensation can be made. In such cases, a physical SIM can be used as an alternative.
3) 30mA if no external sensors need to be powered.
4) <1 sec. if external sensors are responsive and don’t require time to “warm up”.
5) Batteries not included.
RS-525LE relevant documentation
We’ve got you covered
Other useful links
Power consumption calculator
Our online calculator can be used to estimate the battery life of your application or to determine the right settings fitting local solar power yield.
Application notes
For additional tips, refer to our application notes. These are valuable resources to improve your understanding of our data loggers.
Wireless Bluetooth interface
By adding the tiny ML-OU-BLE option board onto your ML-417 data logger, you can add a wireless Bluetooth interface. Convenient for wireless configuration.
Discover the possibilities
Want to know more about what YDOC can do to help you with your quest for the right data logger? Do not hesitate to get in contact.