Web-Graph Air Quality old
Web Thermo Hygrograph
2.610,00 kr. (ex. VAT)
LAN modem, industry
3.285,00 kr. (ex. VAT)
Web-Graph Air Quality old
WT57618
Temperatures, relative humidity and air quality (VOC) over a Power-over-Ethernet network!!!!
2.985,00 kr. (ex. VAT)
Out of stock
Category: WT Old Product
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Description
This article has been replaced by the expanded successor model #57721
Clean air consists of 21% oxygen, 78% nitrogen and 1% argon. Under indoor air conditions noble gases, carbon monoxide, carbon dioxide (CO2) and mixed gases, so-called volatile organic compounds (VOCs) are also present in various concentrations. In assessing the room air quality with respect to quality, the two latter components are the most important: CO2 because of its historical significance as a guide value in the HVAC industry, and VOCs due to their affect on health and human well-being. The amount of CO2 is proportional to the human metabolic rate and approximately proportional to the total concentration of VOCs.
Product Properties:
- Configurable LED traffic light on the sensor for visual indication of limit values
- Supply voltage via Power-over-Ethernet (PoE)
- Phantom power using data pairs
- Power over unused wire pairs
- Alternate external supply possible
- Monitor temperatures and trends from a browser
- HTML page design user-variable
- Direct access to the actual value, e.g., for integration into other Web pages
- SNMP polling / alarm traps for temperature, relative humidity and air quality values for integrating into your existing SNMP management system
- E-mail for alarm or reporting functions
- Time synchronization via time server calibration
- Adapters:
- 10/100MBit
- Combined temperature/humidity/air quality sensor included
- Easy Start:
- Connect sensor and network cable
- Connect supply voltage
- Assign IP number
- That’s it!
- Application examples:
- Monitor air quality of offices, conference rooms, etc.
- Send alarms when limits are exceeded via e-mail, SNMP trap, TCP client, Syslog
- Logging of the measured values via FTP, Excel file, e-mail attachment, internal memory
- Software interfaces
- HTTP, Web browser
- AJAX, JavaScript and Java applet
- TCP and UDP sockets, client and server
- OPC server
- SMTP (e-mail)
- SNMP (including trap)
- SYSLOG
- FTP (data logging)
- Conforms to standards both in office and industrial environments:
- Increased noise immunity for industrial areas
- Stricter noise emission for residential and commercial areas
- 5 year guarantee
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Technical Data:
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
- IPv6 on request
- Electrical isolation:
- Measurement inputs to network: min. 500 volts
- Power supply:
- Power-over-Ethernet (PoE) or via screw terminal with
- DC 18V .. 48V (+/-10%) or AC 18Veff .. 30Veff (+/-10%)
- Current consumption:
- AVG: 80mA @24VDC, 100mA @20VAC
- Max: 90mA @24VDC, 50mA @48VDC
- PoE Class 1 (0.44 - 3.84W)
- Displays:
- 1 LED Power
- 4 LEDs Status and Error
- 3 LEDs traffic-light display in sensor
Measuring unit:
- Measuring range:
- 0°C...50°C, 5..95% RH, 450-2000ppm VOC as CO2 equivalent
- Resolution:
- 1/10 °C, 1/10% rH
- VOC sensor, detected substances:
-
Substance class Occurrence/use (example) Aldehydes Disinfectants, paints, varnishes, tabacco smoke, perspiration, transpiration Aliphatic hydrocarbons Gasoline and diesel engine fuels, vehicle exhaust, LPG, solvents, cosmetics, flatulence, household materials, PVC Alcohols Coating agents, household materials, adhesives, solvents, carpets, disinfectants, cosmetics Amines Dyestuffs, agricultural and pharmaceutical chemicals Aromatic hydrocarbons Printers/copiers, computers, solvents, PVC, gasoline and diesel engine fuels, tobacco smoke Ketones Solvents, coating agents, adhesives, fingernail polish removers, paints, varnishes, carpets
-
- Measuring error:
- Temperature:
- typ. @ 25°C ±0.3°C
- max. @ 0..50°C ±1.2°C
- Relative humidity:
- typ. @ 25°C ±3%rH
- max. @ 0..50°C ±7%rH (0-100%rH)
- Long-term stability typ. <0.5%rH / year
- Aging of the VOC sensor:
- Aging of the sensor is internally compensated for. It is however recommended that a CO2Â comparison measurement be performed once a year.
- Measuring frequency:
- 4s
- Storage frequency:
- 1, 5, 15, 60 min
- Memory depth (832kB):
- min. 10 weeks, max. 8 years
- Deviation of the internal clock:
- max. 4.32 min. / month (without time server calibration)
- max. 3 sec. (with time server calibration)
Housing and other data:
- E-mail function:
- Mail for sending alarms or as reporting function
- Housing:
- Plastic compact housing, 105x75x22mm
- Weight:
- approx. 200g
- Ambient storage temperature:
- -25..+50°C
- Ambient operating temperature:
- 0..+50°C
- Permissible relative humidity:
- 0..95% RH (non-condensing)
- Scope of delivery:
- 1x Web-Graph Air Quality for DIN rail mount
- 1x W&T prober, 2m (temperature/relative humidity & VOC)
- 1x product CD with WuTility management tool, OPC server, SNMP-MIB, reference manual German/English
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