Data sheet:
Web Thermometer Relay
Measure, log and switch...
The Web-Thermometer is a measuring instrument which detects temperatures and makes the values available in the network. When a limit is exceeded a digital relay output can be switched. The device includes an integrated data logger and numerous Web and network services for manual querying of the measurements, or autonomous sending of messages.
Properties
Sensor:
- Pt100 temperature sensor:
- Measuring range of W&T probe: -50°C...180°C
- Measuring input: -200°C...650°C
Connectivity:
- Digital semiconductor relay output
- 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
- Integrated semiconductor relay turns connected devices on and off
- 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: 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 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:
- Temperature sensor:
- 1x Pt100/Pt1000 measuring input
- Cable length for W&T probe: 2m (can be extended as needed)
- Enclosure rating: IP67
- Digital output:
- Semiconductor relay
- Relay output:
- 8-pin terminal block
- Conductor cross-section 0.2-1.3mm²
- Stripped length 6-8mm
- Network:
- 10/100BaseT Autosensing/Auto-MDIX
- RJ45
- IPv6 on request
- Galvanic isolation:
- Network connection min. 1500 V
- Supply voltage:
- Power-over-Ethernet (PoE) or
- DC 12V .. 48V (+/-10%)
- Current consumption:
- PoE Class 1 (0.44 - 3.84W)
- typ. 70mA @ 24V DC with external supply
Measuring unit:
- Sensor:
- Pt100/Pt1000 connection, 2-, 3- or 4-wire
- Measuring range:
- W&T sensor: -50°C...180°C
- PT100/PT1000 measuring input: -200°C...650°C
- Resolution:
- 1/10°C
- Measuring error:
- Measuring unit
- ±0.3°C, ±0.2%
- ±0.3°C, ±0.2%
- PT100/1000 Sensor Class A
- ±0.15°C, ±0.2%
- ±0.15°C, ±0.2%
- Storage frequency:
- 15, 30 sec., 1, 5, 15, 60 min
- Memory depth (6MB):
- min. 16 weeks, max. 20 years
- Deviation of the internal clock:
- max. 1 min. / month
- Measuring frequency:
- 4 seconds
Semiconductor relay output- Digital output:
- 1 potential-free contact, semiconductor relay
- max. switching current:
- typ. 300mA AC/DC (peak 500mA)
- max. switching voltage:
- 39V AC/DC
- max. switching capacity:
- 11.7W AC/DC
Housing and other data:
- Housing:
- Plastic compact housing for top-hat rail mount
- 105x22x75mm (LxWxH)
- Enclosure rating:
- IP20
- Weight:
- approx. 200g
- Ambient storage temperature:
- -40..+70°C
- Ambient operating temperature:
- 0 .. +60°C
- Scope of delivery:
- 1x Web-Thermometer Relay for DIN rail mounting
- 1x Pt100 sensor, 2m, IP67
- 1x Quick Guide
* 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.