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Data sheet:

Web-Thermo-Hygrometer ++

  • Drift-free relative humidity measurements

Measure, log and report...

Precision thermo-hygrometer with drift-free measurement even for constantly high relative humidity values. This measuring device is especially suited for monitoring climate chambers, rooms with tropical climate conditions and for use in food production.
The sensor is insensitive to dewing, since the sensor electronics is potted to protect against climatic effects. This makes the sensor with protective housing for protection against solar radiation and precipitation ideal for outdoor use.

Properties

Sensor:

  • Temperature sensor:
    • Measuring range: -20°C...80°C
  • Relative humidity sensor:
    • Measuring range: 0...100% RH

Connectivity:

  • Intuitive Web interface for simpler configuration
  • Monitor temperatures and trends from a browser
  • Alarm and reporting function:
    • E mail for alarm or as reporting function
    • SNMP polling / alarm traps
    • Configure up to 12 alarm messages
  • Dynamic integration into other Web sites:
    • Direct access to current measurement values, e.g. JavaScript (AJAX).
  • Current Industry 4.0 protocols:
    • REST and MQTT support
  • Additional software interfaces for incorporating into your systems/databases:
    • OPC server
    • Syslog
    • Sensobase (database integration via ODBC)
    • TCP and UDP sockets, client and server
    • FTP (data logging)
  • Possible applications:
    • Reference instrument in laboratory environments for monitoring fixed climate chambers
    • Normal for calibrations of other RH/Temp. sensors
    • Reliable measurement of constantly high humidity values in food production (cheese, mushrooms, greenhouse, etc...)
    • Energy optimization from precise climate setting
    • Exterior use / meteorology (Requires a suitable protective enclosure for the sensor against solar radiation and precipitation)
    • Monitoring storage conditions for high-value goods

Data logger:

  • Internal data logger
    • Memory size: min. 12 weeks, max. 20 years
    • Save frequency: 15, 30 sec, 1, 5, 15, 60 min
  • Document measurement data online in the W&T Cloud and access from anywhere in the world
  • Internal clock
    • Time synchronization using time server calibration
    • Battery-backed device clock

Standards & more

  • optional: ISO factory calibration per DIN EN ISO/IEC 17025
    • with calibration certificate for verified documentation of the measured value deviations
    • Valid for 12 months
  • optional: DAkkS/DKD calibration per DIN EN ISO/IEC 17025
    • with calibration certificate for verified traceability to national standards
    • Valid for 12 months
  • Supply voltage via Power-over-Ethernet (PoE)
    • Phantom power using data pairs
    • Power over unused wire pairs
    • External power supply is an alternative
  • Conforms to standards both in office and industrial environments:
    • High noise resistance for industrial environments
    • Low noise emission for residential and business areas
  • 5 year guarantee

Technical data

Connections and displays:

  • Combined sensor:
    • Temperature and relative humidity measurement
    • M8 connector
    • Cable length: 2m (can be extended to max. 20m)
  • Network:
  • Galvanic isolation:
    • Network connection min. 1500 V
  • Supply voltage:
    • Power-over-Ethernet (PoE) or
    • DC 12V .. 48V (+/-10%)
  • Supply connection:
    • Plug-in screw terminal, 5.08mm spacing
    • Labeled "L+" and "M"
  • Current consumption:
    • PoE Class 1 (0.44 - 3.84W)
    • typ. 110mA @12V, 55mA @24VDC
  • Displays:
    • 1 LED Power
    • 2 LEDs Network Status
    • 2 LEDs Status and Error

Measuring unit:

  • Measuring range:
    • -20°C...80°C, 0..100% RH
  • Resolution:
    • 1/10 °C, 1/10% rH

  • Measuring error:

    • Temperature:
    • typ. ±0.1°K @ 0..70°C
    • typ. ±0.2°K @ -20..80°C

    • Relative humidity:
    • typ. ±0.5% RH @ 15..30°C
    • typ. ±0.8% RH @ 0..50°C
    • typ. ±2.5% RH @ -20..80°C

  • Measuring frequency:

    • 4s
  • Storage frequency:
    • 15s, 30s, 1m, 5m, 15m, 60m
  • Memory depth (4MB):
    • min. 12 weeks, max. 20 years

Housing and other data:

  • Housing:
    • Plastic compact housing for top-hat rail mount
  • Dimensions:
    • 105x22x75mm (LxWxH)
  • Enclosure rating:
    • IP20
  • Weight:
    • approx. 200g
  • Ambient temperature
    • Storage: -10..60°C
    • Device operating temp., not stacked: 0..60°C
    • Stacked: 0..50°C
    • Sensor operating temp.: -20..80°C
  • Permissible relative humidity:
    • 0..100% relative humidity
  • Scope of delivery:
    • 1x Web-Thermo-Hygrometer
    • 1x sensor, 2m (temperature, humidity)
    • 1x Quick Guide

Accessories

  • Power supplies

    • Plug-in power supply, 24V / 500mA DC with Euro plug
    • 11021
    • 19.00€
    • Plug-in Power Supply, 24V / 750mA DC with Euro, US and UK plug
    • 11026
    • 34.00€
    • Power Supply for DIN rail mount, 24V / 630mA DC
      (merchandise, 2-year manufacturer’s guarantee)
    • 11080
    • 29.00€
  • Storage and Visualization

    • Motherbox 3
    • 50504
    • 298.00€
  • Measuring - Accessories

    • Replacement sensor for 57729
      Initial calibration of this article only with complete unit.
    • 57032
    • 998.00€
    • ISO factory calibration (temp. and humidity) for complete device with calibration certificate, valid for 12 months
      Delivery time approx. 10-14 days
      (This article cannot be ordered as a sample.)
    • 57012
    • 198.00€
    • Accredited DAkkS/DKD calibration (temp. and humidity) for complete device with calibration certificate, valid for 12 months
      Delivery time approx. 10-14 days
      (This article cannot be ordered as a sample.)
    • 57027
    • 298.00€
  • Mechanical Accessories

    • Mounting bracket for wall mounting
    • 58812
    • 9.98€
    • 19" DIN rail
    • 58813
    • 19.00€
    • Sensor extension for 57729, M8, 2m
    • 57033
    • 29.00€
    • Sensor extension for 57729, M8, 5m
    • 57034
    • 39.00€
    • Sensor extension for 57729, M8, 10m
    • 57035
    • 49.00€
  • Supplementary network products

    • Ethernet Switch Industry, 4 Port
    • 55604
    • 198.00€
  • Free Product CD

    • W&T Product CD
      (manual, tools & drivers)
    • 10001
    • 0.00€
  • Software

    • Web-IO2Go (app for iOS)
    • 57700
    • free
    • Download

* Our offering is intended only for commercial users. We will be happy to refer private end customers to trading partners through whom our products can be purchased.