Ydoc 417 YDOC Data Loggers | Low-Power, Reliable Remote Monitoring Solutions

Low power data logger

The ML-417 is a compact, low-power, cost-effective remote data logger, available with or without a built-in cellular modem (LTE-M & NB-IoT). It is ideal for measuring outdoor environments and collecting valuable data in environmentally challenging applications. The ML-417 comes equipped with a built-in temperature sensor, an 8GB micro SD card, and a 2FF SIM card slot.

The ML-417 offers various power options, including:

• 3.6V lithium batteries,
• 8..28V DC input,
• 12V solar panel input,
• Or an integrated solar panel with a battery charger.

Key Features:

• Inputs: The data logger can acquire physical signals through:

  • 2 current loop inputs,
  • 2 voltage inputs,
  • 1 potentiometer input,
  • 3 digital inputs.

• Additional or specialized inputs can be added using internal stackable option boards/converters.

• Serial Port: One serial port is included to capture measurements from sensors that are compatible with ASCII, MODBUS, NMEA, or SDI-12 protocols.

• Sensor Power Supply: The ML-417 can power external sensors to prevent them from consuming energy while the data logger is in sleep mode.

• Mathematical Channels: Up to 8 mathematical channels are available for calculating meaningful engineering values derived from sensor inputs (e.g., using a polynomial to calculate flow from stream level).

• Aggregation Channels: The logger supports up to 8 aggregation channels (e.g., recording 2- or 10-minute windspeed averages sampled at 1Hz).

Data Logging and Transmission:

• When equipped with a cellular modem, logged data can be pushed to a server via HTTP(S), FTP(S), secure TCP, or MQTT(S) at configurable intervals.

Product Variants:

• ML-017: Without a cellular modem.
• ML-417: Includes a global LTE-M & NB-IoT modem.

When integrated with the solar panel, the ML-417 forms a fully self-sufficient remote monitoring station. This cost-saving solution eliminates the need for additional components like:

• External solar panels,
• Large batteries,
• Separate cellular modems,
• Encapsulating cabinets.

ML-417 remote data logger features

Data Logging

• 1 second to 1 day intervals.
• Regular, alarm, and independent intervals.
• 8GB industrial-grade micro SD-Card (file storage), 512kB (program storage), 64kB SRAM (runtime memory).

Data Push

• 1 minute to 1 day intervals.
• Regular and alarm intervals.
• Direct push on alarm raise and fall.
• Native payload formats: TXT, JSON, CSV, JPEG, or Sparkplug B.
• Supports protocols: MQTT(S), HTTP(S), FTP(S)¹, or secure TCP (AES-128).

Alarming

• Alerts via SMS, e-Mail, and MQTT(S).
• Open collector output (max. 100mA sink current).

Internal Sensors

• Battery (voltage and remaining capacity).
• Processor temperature.
• GSM signal strength.

Analog Inputs (12-bit resolution & <0.2% FS accuracy)

• 2x current loop inputs (0/4..20mA, 150 Ohm impedance).
• 2x voltage inputs (0..10V).
• 1x potentiometer input (0..3.3V, max. 10M Ohm).

Digital Inputs (0..5V)

• 3x state, counter (max. 10kHz), on-time meter, or trigger.

Serial Input (1x RS-232, RS-485, or SDI-12)

• SDI-12 (up to 15 devices, max 20 channels per device).
• MODBUS RTU/ASCII (read registers from up to 15 slaves).
• NMEA-0183 (standard and custom sentences).
• ASCII (sensors outputting readable lines of numeric values).

Derived Inputs

• 8x calculation channels, using mathematical operators and functions (e.g., cos, sin, atan2, ln, sqrt).
• 8x aggregation channels: min/max, average, gust, std dev, rate of change, and up to 3 different percentiles sampled at 1Hz max.

Accessory Port

• 1x RS-232 & 5V excitation, to connect and power a GPS receiver, Iridium SBD modem, JPG camera, or TFT display.

Built-in Cellular Modem (ML-417)

• LTE-M (M2), NB-IoT (NB2) & GPRS fallback.
• Supports IPv4, IPv6, NTP, TLS (1.1, 1.2, or 1.3) & SNI.
• Max transmission power: LTE 23dBm, GPRS 33dBm.
• LTE bands: 1, 2, 3, 4, 5, 8, 12, 13, 18, 19, 20, 25, 26, 27, 28, 66, 71 & 85.
• GPRS bands: B2, B3, B5 & B8.
• TAC: 35224763, FCC ID: RI7ME910G1WW.
• 2FF (Class B) SIM-CARD slot.
• Integrated GSM antenna, external GSM antenna optional.

Configuration

• Via USB (local) or secure TCP tunnel (remote).

Power Consumption

• 60mA@3.6V average operating² current during a duty cycle of less than 1 sec³ per log interval.
• 250mA@3.6V average operating current during 20 to 60 seconds of cellular communication.
• <80uA@3.6V sleep current.
• 12V@200mA excitation to power external sensors.
• Configurable daily operation time bracket to limit power consumption (e.g., 07:00AM to 20:00PM or 21:00PM to 06:00AM).

Power Supply (Mounted in several different covers)

• LI: 3.6V Lithium battery holder(s)⁴.
• PV: 1Wp Integrated solar panel and LiFePO4⁴ charger.
• SLA/LFP: 12V solar panel input and SLA or LiFePO4⁴ charger.
• DC: 8..28V DC input with or without battery⁴ backup.

Enclosure (Several different covers)

• LI/LFP/SLA/DC: IP68 (30min@2m), 150x120x90mm, 420g.
• PV: IP67, 150x120x130mm, 450g.
• TFT: IP54, 150x120x85mm, 620g.
• UV stabilized polycarbonate.
• Wide temperature operating range: –30°C to +75°C.

Applications

•Water management

•Environmental Telemetry

•Weather Monitoring

•Irrigation systems

•M2M systems