Web-Thermometer NTC

Sensor:

• NTC temperature sensor:
  • Measuring range: -45°C…75°C

Connectivity:

• Intuitive Web interface for simpler configuration
• Monitor temperatures and trends from a browser
• Alarm and reporting function:
  • E-mail for alarm or reporting functions
  • 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:
  • OPC UA, REST and MQTT support
• Additional software interfaces for incorporating into your systems/databases:
  • SNMPv1, SNMPv2c, SNMPv3
  • Modbus-TCP
  • OPC UA, OPC DA
  • Syslog
  • Sensobase (database integration via ODBC)
  • TCP and UDP sockets, client and server
  • FTP (data logging)
• Possible applications:
  • Monitor temperatures in the server room, network cabinet or office
  • Direct display of multiple measuring points in the browser via Java applet
  • Logging of measurements via FTP, Excel file, email attachment and internal memory
  • Green IT: Monitor efficiency of the server room climate control

Data logger:

• Internal data logger
  • Memory capacity: min. 16 weeks, max. 20 years
  • Save frequency: 15s, 30s, 1m, 5m, 15m, 60m
• Document measurement data online in the W&T Cloud and access from anywhere in the world
• Internal clock
  • Time synchronization via 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

Connections and displays:

• Temperature sensor:
  • NTC type
  • DB9 receptacle
  • Cable length: 1m (cannot be extended)
• Network:
  • 10/100BaseT Autosensing/Auto-MDIX
  • RJ45
  • IPv6 on request
• Galvanic isolation:
  • Network connection min. 1500 V
• Power supply:
  • Power-over-Ethernet (PoE) or
  • DC 12V .. 48V (+/-10%) or
  • AC 18Veff .. 30Veff (+/-10%)
• Supply connection:
  • Plug-in screw terminal, 5.08mm spacing
  • Labeled “L+” and “M”
• Current consumption:
  • PoE Class 1 (0.44 – 3.84W)
  • typ. 62mA @24VDC, 80mA @20VAC,
  • max. 70mA @24VDC, 40mA @48VDC
• Displays:
  • 1 LED Power
  • 2 LEDs network status
  • 4 LEDs Status and Error

Measuring unit:

• Sensor:
  • NTC 10k
• Measuring range:
  • -45°C…75°C
• Resolution:
  • 1/10°C
• Maximum measuring error:
  (measuring unit + sensor)
  • ±0.3°C, ±5.1%
• Measuring frequency:
  • 4 seconds
• Storage frequency:
  • 15s, 30s, 1m, 5m, 15m, 60m
• Memory depth (4MB):
  • min. 16 weeks, max. 20 years

Housing and other data:

• Housing:
  • Plastic compact housing for top-hat rail mount
  • 105x22x75mm (LxWxH)
• Enclosure rating:
  • IP20
• Weight:
  • approx. 200g
• Ambient temperature
  • Storage: -40..+70°C
  • Operating: Non-contiguous mounting: 0 .. +60°C
  • contiguous mounting: 0 .. +50°C
• Permissible relative humidity:
  • 0..95% RH (non-condensing)
• Ambient operating temperature:
  • 0 .. +60°C
• Scope of delivery:
  • 1x Web-Thermometer NTC
  • 1x NTC Sensor, 1m
  • 1x Quick Guide