W&T connects
Interfaces for TCP/IP, Ethernet, RS-232, RS-485, USB, 20mA, glass and plastic fiber optic cable, http, SNMP, OPC, Modbus TCP, I/O digital, I/O analog, ISA, PCI
Data sheet:

Web-IO Analog-In 0..20mA / 0..10V

Gather, monitor and archive analog measurement values over the Internet/Intranet

The Web-IO Analog-In model 57641 includes in one box all the functions you need to acquire, save and display your analog measurement values. Numerous alarm functions are also available which can be incorporated into your own applications or into existing systems as the user requires.


  • 1x Ethernet 10/100BaseT autosensing
  • 1x power input: 0..20mA
  • 1x voltage input: 0..10V

Management and connectivity:

  • Monitor measured values and trends from a browser
  • Graphic display of the stored temperature values
    • Chart display
    • Interactive display, user-scalable
    • Display of limit violations
    • freely selectable line color
  • Encrypted E-mail (SSL/TLS) for alarm or reporting functions
  • SNMP measurement queries / alarm traps for incorporating into your existing SNMP management system
  • Querying measured data with OPC
  • Sensing alarms via syslog, TCP, SNMP, e-mail
  • Archiving via FTP and W&T database tool Sensobase®
  • Time synchronization via time server calibration
  • Device language selectable German/English
  • Additional software interfaces
    • AJAX, JavaScript and Java applet
    • TCP and UDP sockets, client and server

Power supply:

  • External
    • Screw terminal connection 12V-24V AC/DC

Standards & more

  • Conforms to standards both in office and industrial environments:
    • High noise resistance per EN 61000-6-2
    • Low noise emission per EN 55032:2015 + A1 Cl. B, EN 61000-3-2 & EN 61000-3-3
  • 5 year guarantee

Technical data

Connections and displays:

  • Network:
  • Current input:
    • 0..20mA, 100Ohm
  • Voltage input:
    • 0..10V, 1MOhm
  • Galvanic isolation:
    • Measurement inputs to network: min. 500V
  • E-mail function:
    • Mail for sending alarms or as reporting function
  • Supply voltage:
    • DC 12V .. 48V (+/-10%)
    • AC 12Veff .. 30Veff (+/-10%)
  • Current consumption:
    • AVG: 185mA @12VDC, 90mA @24VDC
  • Displays:
    • 1 LED Power
    • 1 LED Status
    • 1 LED Error

Measuring unit:

  • Resolution:
    • Current input: 2.5µA, voltage input: 1.25mV
  • Measuring error:
    • max. 0.5% FSR (Full Scale Range 0..20mA, 0..10V) TA = 0-60°C
  • Storage frequency:
    • 1, 5, 15, 60 min
  • Memory depth (832k):
    • min. 79 days, max. 17 years
  • Deviation of the internal clock:
    • max. 4.32 min. / month (without time server calibration)
    • max. 3 sec. (with time server calibration)
  • Measurement value acquisition (can be polled over the network and can generate alarms if desired):
    • 2/second
  • Saving in the internal data logger
    • 1/Minute

Housing and other data:

  • Housing:
    • Plastic compact housing, 105x75x22mm (L x W x H)
  • Enclosure rating:
    • IP20
  • Weight:
    • approx. 200g
  • Ambient temperature:
    • Storage: -40..+70°C
    • Operation: 0..+60°C
  • Scope of delivery:
    • Web-IO Analog-In (0..20mA, 0..10V) for DIN rail mount
    • Product CD with WuTility management tool, OPC server,
    • Programming examples for VB/Delphi, SNMP-MIB
    • Reference manual in German/English

    • Please order power supplies separately as accessories