RS-525SE – Remote data logger
Low power data logger
The ML-525 Standard Edition data logger, housed in a weatherproof RS enclosure, is a compact, low-power, and cost-effective device 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, 100MB SLC flash ring-buffer, a micro SD card holder, eSIM and nano SIM card slot.
The device can acquire physical signals through 2 current loop inputs, 2 voltage inputs, 1 potentiometer input, and 3 digital inputs. Additional or specialized inputs/outputs can be added via internal stackable option boards.
Equipped with three serial ports, the data logger can capture measurements from MODBUS, NMEA, ASCII and SDI-12 compatible sensors.
The RS-525SE offers various editions and power options, including 3.6V lithium batteries, 8-28V DC input, 12V external solar panel input, or an integrated solar panel with a battery charger.
Our multi-purpose data logger is customizable for any application
2 current loop inputs, 2 voltage inputs, 1 potentiometer input and 3 digital inputs.
Provided with 3 serial ports to capture measurements from ASCII, MODBUS, NMEA or SDI-12 compatible sensors
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
When 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-525SE remote data logger features
- Data logging
› 1 second to 1 day intervals
› regular, alarm and independent intervals
› Up to 100 parameter channels
› 112MB ring-buffer extendable up to 4GB with microSD card to up to 64GB, 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)
› 1x digital open collector alarm output to switch on a relay in case a parameter value is outside its limits (e.g. a high water level)
- 5x analog inputs (12 bit resolution & <0.2% FS accuracy)
› 2x current loop inputs (0/4..20mA, 100 Ohm impedance)
› 2x voltage inputs (0..10V)
› 1x voltage/potentiometer input (0..2048mV, max. 10Mohm) a/o to connect a wind direction sensor
- 3x 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
- 3x serial ports for connecting external sensors (1x RS-232, 1x RS-485 and 1x SDI-12)
› ASCII: Sensors autonomously outputting readable lines of numeric values
› MODBUS: Read-out value registers from MODBUS (RTU/ASCII) slave devices
› NMEA-0183: Sensors outputting standard and custom sentences
› SDI-12: Read-out of up to 16 devices with up to 20 parameters per device using aC!, aM!, aCx! or aMx! commands
- Internal sensors
› Battery voltage and rest capacity
› Internal enclosure temperature and relative humdity
› GPS with ufl-connector (GPS antenna not included)
- 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.
- Accessory Port (1x RS-232 & 5V excitation, to connect and power an accessory (GPS receiver, Radio modem, JPG camera or TFT-display) or to output measured values as ASCII lines or custom NMEA-0183 sentences.
- FTP with TLS-Explicit, SMTP with TLS-Implicit
RS-525SE 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 options5)
› 1 or 3 D-size 3.6V Lithium battery holders
› 1x 26650 3.2V LiFePO4 battery holder with charger and 1Wp solar panel integrated in cover
› 4x 18650 3.2V LiFePO4 battery holders with charger for 21VOC external solar panel
› 12V battery charger for 21VOC external solar panel
› 8..28V DC-Adapter
› 8..28V DC-Adapter with D-size 3.6V Lithium backup battery holder
- Rugged and waterproof IP68/69 enclosure
- 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-525SE remote data logger editions
The RS-525SE can be powered from various sources via an adapter-PCB mounted in the cover of the enclosure.
The RS-525SE is available in the following editions, based on cover type:
RS-525SE Battery powered editions
RS-525SE-LI
A D-Size 3.6V Lithium battery powered RS-525SE with blind cover (Using a SAFT-LSH20 or GEBC-ER34615M battery is recommended). This edition is best suitable for monitoring with longer log intervals >=1h and transfer intervals >=4h.
RS-525SE-3LI
Same as above, but equipped with D-size holders to host up to 3 Lithium SAFT LSH20 batteries safely, with a combined capacity of 39000mAh.
RS-525SE Solar powered editions
RS-525SE-PV
An RS-525SE with cover with integrated 1Wp tiny solar panel, charger and holder for one 26650 3.2V LiFePO4 battery. The battery is protected against damage by over charging and from damage by depletion by temporarily switching off the power to the data logger, giving the sun the chance to replenish the battery.
This edition is best suitable for monitoring with moderate log intervals >=5 min and transfer intervals >=15 min.
RS-525SE-LFP
An RS-525SE is powered by 1 to 4 LiFePO4 18650 3.2V cells. The integrated charger is optimized to charge the internal batteries from an external solar panel with 12 or 36 cells, providing respective open-circuit voltages of 7.2V or 21V.
This edition is best suitable for applications with power hungry sensors for monitoring with low log intervals <5 min or transfer intervals <15 min.
RS-525SE-SLA
An RS-525SE to be powered from an external 12V Sealed Lead Acid/LiFePO4 battery, the integrated charger can be used to charge the 12V battery from an external 36-cells 12Vnom/21Voc solar panel.
This edition is best suitable for applications with power hungry sensors, sensors that require continuous power or for monitoring with fast transfer intervals <=5 min.
RS-525SE DC powered editions
RS-525SE-DC
An externally 8..28V DC powered RS-525SE with blind cover.
This edition is best suitable when a reliable external DC source is easily available or for monitoring with low log intervals <5 min or transfer intervals <15 min.
RS-525SE-DC-LI
As above but with a D-Size 3.6V Lithium back-up battery holder (Using a SAFT-LSH20 or GEBC-ER34615M battery is recommended).
This edition is best suitable when a external DC source is easily available but suffering from occasional outages.
RS-525SE-LFP
An externally 6..28V DC powered RS-525SE with uninterruptible power source (UPS) using 1 to 4 LiFePO4 18650 3.2V cells.
This edition is best suitable when a external DC source is (occasionally) available to sufficiently charge the LFP cells.
TS-525SE display editions
TS-525SE-LI/LFP/SLA/DC-(LI)
As RS-525SE-LI/LFP/SLA/DC-(LI), but in a different enclosure with 3.5″ resistive touch color TFT display (320×240 pixels) integrated in the cover. The display is used for displaying actual values and historical data as graphs, its not meant for configuration purposes.
Note: The TS-525SE is not waterproof and not designed for outdoor use.
RS-525SE relevant documentation
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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.