Product specifications
WuT 57728
*Last stock, product is EOL. Alternative product is 57721*
Monitor air quality
On-demand ventilation control in office buildings, schools, education and centers and sports facilities often involve measurement of CO2. But a drawback of CO2 measurement is that odors caused by VOC are not detected, since they have only a slight effect on the CO2 measurements.
Even though there is an actual ventilation need, this condition is not detected using traditional technology. With this VOC measuring instrument the room air quality can be determined based on human perception.
Sensor:
-Temperature sensor:
-Measuring range: -40°C...85°C
-Relative humidity sensor:
-Measuring range 0..100% RH, permissible ambient: 0..95% (non-condensing)
-Air quality sensor:
-Measuring range: 0...60,000 ppb TVOC
Connectivity:
-Configurable LED tower on sensor for optical indication of limit values
-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:
-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:
-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
-Dewpoint measurement, climate monitoring
-Green IT: Monitor efficiency of the server room climate control
-Data logger:
-Internal data logger
-Memory capacity: min. 7 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
Connections and displays:
-Combined sensor:
-Temperature, relative humidity, air quality measurement
-DB9 receptacle
-Cable length: 2m (can be extended to max. 20m)
-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%)
-Supply connection:
-Plug-in screw terminal, 5.08mm spacing
-Labeled "L+" and "M"
-Current consumption:
-PoE Class 1 (0.44 - 3.84W)
-typ. 60mA @24V DC with external supply
-Indicators:
-1 LED power
-2 LEDs network status
-4 LEDs status and error
-3 LEDs traffic-light display in sensor
Measuring unit:
-Measuring range:
-0°C..85°C, 5..95% RH, 0-60,000 ppb TVOC
-Resolution:
-1/10 °C, 1/10% RH, 1/10 ppb TVOC
Air quality sensor:
TVOC based on ethanol
Measuring error:
Temperature:
typ. @ 25°C ±0.3°C
max. @ 0..50°C ±0.7°C
Long-term stability: typ. <0.03°C / year
Relative humidity:
typ. @ 25°C ±2% RH
max. @ 0..50°C ±4% RH (0-100% RH)
Long-term stability: typ. <0.25% RH / year
Air quality:
typ. @ 25°C ±15% of the measured value
max. ±40% of the measured value
Long-term stability: typ. <1.3% of the measured value
Measuring frequency:
-4s
-Storage frequency:
-15s, 30s, 1m, 5m, 15m, 60m
-Memory depth (4MB):
-min. 7 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)
-Scope of delivery:
-1x Web-Thermometer Air Quality for DIN rail mounting
-1x W&T sensor, 2m (temperature/humidity & TVOC)
-1x Quick Guide
- Wiesemann & Theis product -
