Option boards

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Collect the right data with our option boards

Option boards to customize your data logger

Option boards can be used to add additional inputs/features to an ML-417 data logger or to perform signal conditioning. You can mechanically stack up to 3 option boards, but only one board per category ID (CID). Some boards come with a switch to choose a different CID, so you can stack multiple similar boards.

Converter(OC) or Power (OP) boards don’t have CID’s and you can stack as many OC/OP-boards as mechanical feasible. OC-boards don’t make use of the internal control bus, but are wired to existing inputs/outputs/ports.

Option board category

CID

0x48 & 0x49

SKU, Description

ML-OI-AD-80MV, Dual channel 16-bit differential inputDual channel 16-bit differential input.

a/o to connect pyranometers or load-cells

Ranges

  • ±80mV
  • ±40mV
  • ±20mV
  • ±10mV

Terminals

1. In 1 (+)
2. In 1 (-)
3. In 2 (+)
4. In 2 (-)
5. Excitation (5V @80mA)
6. Ground
7. CID selector

CID

0x48 & 0x49

SKU, Description

ML-OI-AD-2000MV, Dual channel 16-bit differential input Dual channel 16-bit differential input. a/o to connect thermistors or pH-probes

Ranges

  • ±2000mV
  • ±1000mV
  • ±500mV
  • ±250mV

Terminals

1. In 1 (+)
2. In 1 (-)
3. In 2 (+)
4. In 2 (-)
5. Excitation (5V @80mA)
6. Ground
7. CID selector

CID

0x48 & 0x49

SKU, Description

ML-OI-AD-10V, Quad channel 16-bit single ended input

Ranges

  • ±10V
  • ±5V
  • ±2.5V
  • ±1.25V

Terminals

1. Input 1
2. Input 2
3. Input 3
4. Input 4
5. Excitation (12V)
6. Ground
7. CID selector

CID

0x48 & 0x49

SKU, Description

ML-OI-AD-20MA, Quad channel 16-bit single ended input

Ranges

  • ±20mA

Terminals

1. Input 1
2. Input 2
3. Input 3
4. Input 4
5. Excitation (12V)
6. Ground
7. CID selector

CID

0x48 & 0x49

SKU, Description

ML-OI-AD-PT1000, Dual channel 2 or 3-wire PT1000 input

Ranges

  • -40…+85°C (±1.5°C)
  • -20…+40°C (±1°C)
  • On user calibration:
  • -40…+85°C (±0.5°C)

Terminals

1. In 1(+)
2. In 1(-)
3. In 1(-)
4. In 2(+)
5. In 2(-)
6. In 2(-)
7. Wire selector
8. CID selector

CID

0x46
&
0x47

SKU, Description

ML-OI-AX-DI, to add four more digital inputs

a/o to connect pyranometers or load-cells

Ranges

0/1
0…16777216
5V
500Hz

Terminals

1. Input 1
2. Input 2
3. Input 3
4. Input 4
5. Ground
6. Backup batt.
7. CID selector

CID

0x46
&
0x47

SKU, Description

ML-OI-AX-DS18B20, to connect up to four 1-Wire digital thermometers.

Supported chips:
DS1820, DS18B20, DS18S20, DS1822, DS1920

Ranges

Terminals

1. Input 1
2. Input 2
3. Input 3
4. Input 4
5. Excitation (3.6V)
6. Ground
7. CID selector

CID

0x46
&
0x47

SKU, Description

ML-OI-AX-HART, Octo channel HART inputdatalogger HART inputs Supports multi-drop topology to connect multiple sensors devided over max 8 input channels.

Ranges

Terminals

1. Loop (+)
2. Loop (-)
3. Excitation (12V)
4. CID selector

CID

0x46
&
0x47

SKU, Description

ML-OI-AX-RH, to connect an external I2C based humidity sensorI2C RH sensor input. Supported chips: AM2315 (AOSONG) ChipCap2 (Amphenol/Telaire T9602-D-3) SHT3x (Sensirion).

Note: We recommend a cable length of max 0.5m.

Ranges

Terminals

1. SCL
2. SDA
3. Excitation (3.6V)
4. Ground
5. CID selector

CID

0x76

SKU, Description

ML-OI-BARO, Atmospheric pressure & temperature sensor a/o to compensate readings of level sensors

Ranges

  • 300…1200hPa (±2hPa)
  • -30…+70°C (±1°C)

Terminals

Terminals

CID

0x4C

SKU, Description

ML-OI-COM-UART, Serial sensor input (UART)UART to connect sensors with TTL UART port

Ranges

  • 300…
  • 230k4bps
  • Tx (0…3.3V)
  • Rx (0…5V)

Terminals

1. Excitation (3.3V)
2. Transmit
3. Receive
4. Ground

CID

0x4C

SKU, Description

ML-OI-COM-RS232, Serial sensor input (RS232) a/o to connect an NMEA-0183 transponder

Ranges

  • 300…
  • 230k4bps

Terminals

1. Excitation (12V)
2. Transmit
3. Receive
4. Ground

CID

0x4C

SKU, Description

ML-OI-COM-RS485, Serial sensor input (RS485) a/o to connect a MODBUS/RTU sensor

Ranges

  • 300…
  • 230k4bps

Terminals

1. Excitation (12V)
2. RS485 A+
3. RS485 B-
4. Ground

CID

0x4C

SKU, Description

ML-OI-COM-SDI12, SDI-12 sensor input

Ranges

Terminals

1. Excitation (12V)
2. Ground
3. Data

CID

0x4D

SKU, Description

ML-OA-RS232, RS232 Auxiliary board. To add a secondary accessory to an ML-417ADS (e.g. to add a second camera)

Ranges

  • Off/On: 0/3.6V
  • 300…230k4bps

Terminals

1. Control out
2. Transmit
3. Receive
4. Ground

Excitation: 3.6V

CID

0x4D

SKU, Description

ML-OA-WIFI, WiFi Auxiliary boardWiFi interface To transfer log files by WiFi (TCP, MQTT & HTTP)

Ranges

  • <400m
  • +19dBm transmit power
  • -96dBm sensitivity
  • IEEE 802.11b/n/g

Terminals

CID

0x50
&
0x51

SKU, Description

ML-OO-MODBUS, MODBUS/RTU auxiliary output boardMODBUS Slave To share sensor readings with your local SCADA system.

Ranges

  • 32 floating-point values
  • 4800…38k4bps

Terminals

1. RS485 A+
2. RS485 B-
3. Ground
4. CID selector

CID

0x50
&
0x51

SKU, Description

ML-OO-SW, digital output boardGalvanic isolated switches To add three galvanic isolated switches with potential free contacts

Ranges

  • ±100V
  • ±200mA

Terminals

1. Contact 1a
2. Contact 1b
3. Contact 2a
4. Contact 2b
5. Contact 3a
6. Contact 3b
7. CID selector

CID

n/a

SKU, Description

ML-OC-W2P, Waveform to digital pulse converterSine form to digital pulse convertor To connect flow meters or anemometer with a passive coil output

Ranges

  • 0…50kHz
  • 60mV…24V
  • Pulse 0/3.6V

Terminals

1. Coil in (+)
2. Coil in (-)
3. Pulse out

CID

0x50
&
0x51

SKU, Description

ML-OP-524, to power external sensors or peripheralssensor power supply Power switches on in parallel with logger sensor power switch (internal control) or from an external signal.

Ranges

  • 5V@300mA, 12V@200mA
  • or 24V@100mA
  • Off/On: 0/3…24V
  • 3.6V (from batteries)

Terminals

1&2. Output

3&4. Ground
5. Control in
6. Supply
7. Volt selector
8. Cntrl mode

CID

0x4A

SKU, Description

ML-OU-BLE, Bluetooth LE user interface. To enable wireless local access.

Ranges

  • <160m
  • +4dBm transmit power
  • -92dBm sensitivity

Terminals

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.