COMET W700 Sensors with WiFi Interface User Manual

COMET W700 Sensors with WiFi Interface User Manual

PRODUCT DESCRIPTION

Sensors Wx7xx with WiFi interface are designed to measure temperature, relative humidity, barometric pressure, CO2 concentration of the air in the non-aggressive environment. Communication with the sensor is done via wireless WiFi network. Sensor is designed to send measured values to online portal COMET Cloud or COMET Database. It can provide values via www pages and by the Modbus TCP protocol, JSON and XML as well. Sensors continuously evaluate measured values, in case of limits are exceeded, alarm e-mail is sent and set acoustic or optical signalisation. Measured values and alarm states are shown at the LCD display.

sensors
W3711| T + RH + CV| Connector for external Digi/E probe
W3721| T + RH + CV| Connectors for two external Digi/E probes
W3745| T + RH + CV| Connector for external Digi/E probe and connectors for up to three external Pt1000/C probes
W4710| T + RH + P + CO2 + CV| With connected temperature, relative humidity sensor, internal sensors for barometric pressureand CO2 concentration
W5714| CO2| Internal sensor CO2
W7710| T + RH + P + CV| With connected temperature, relative humidity sensors and internal barometric pressure sensors

• T …temperature, RH…relative humidity, P…barometric pressure, CO2 … concentration of CO2 in the air
• CV …computed values (dew point, absolute and specific humidity, mixing ratio, specific enthalpy, humidex)

INSTALLATION AND CONNECTION

Fasten the sensor directly to the wall using two screws or insert it into the lockable holder LP100 (optional accessories). The sensor is designed for a fixed installation. Keep the probes and device away from sources of electromagnetic interferences.

• always install the devices vertically with the antenna upwards in places with sufficient quality of the WiFi signal (check e.g. via a WiFi-enabled cell phone). Please make sure that the environmental characteristics correspond to the operating conditions
• connect the probes. The maximum cable length of the Digi/E probe is 15 m. Recommended cable length of the Pt1000/C probes is up to 15 m (max. 30 m)
• connect supplied power source into plug socket (use supplied cable to connect device into USB-C connector)

DEVICE SETUP

To be able use all features of the device, it is mandatory to setup device. This task can be done by wireless connection via integrated access point or via USB cable. Setup procedure via integrated access point:

• newly purchased device is set into access point mode. This is signalised by symbol AP at the LCD display. In case of this symbol is not shown or there is symbol CL shown, please switch device mode manually by the buttons (see chapter “Buttons control”).
• enable WiFi inside your laptop or cell phone and connect to access point with name WiFiSensor_xxxxxxxx. In case of cell phone is used, it is recommended to switch off mobile data connection.
• open web browser and insert address http://192.168.3.1 or www.wifisensor.net
• press setup button at the main page to start device configuration. At the first step select Network – Wifi client – Scan and insert SSID a password for your WiFi network.
• activate connection into COMET Cloud at the menu item Cloud – Cloud mode and select COMET Cloud mode. Registration card for adding device into your account under COMET Cloud is a part of shipment.
• at the menu Channels it is possible to set alarm limits
• to be all changes applied it is mandatory to save settings. After setup of SSID and saving settings is symbol CL  shown.

BUTTONS CONTROL

• switching between client (CL) / access point mode (AP) – press button MODE for longer than 3 seconds and after that confirm by button SET –
• showing current IP address of the WiFi sensor – short press of the MODE button

The sensors do not require any special operation and maintenance. We recommend doing regular verification of the accuracy of calibration measurements.

SAFETY INSTRUCTIONS

• read the Safety Instructions for Wx7xx series sensors carefully before using and follow them during device operation
• the devices contain electronic parts and must be disposed of according to local and currently valid legal conditions
• to complete the information provided in this manual, use the detailed manuals and other documents available in the “Download” section of the specific device at www.cometsystem.com

Technical specifications

Wx7xx standard device with not detachable antenna

Wx7xxQ option with RP-SMA connector

barometric pressure sensor (W7710) is inside the case

bar. pressure sensor and CO2 sensor are inside the case

Pt1000/C probe

•  temperature measuring range: -90 to +260°C
• accuracy of temperature measurement: ±0.2°C/±0.002 x MV *

Digi/E probe

• temperature measuring range: according to the probe
• accuracy of temperature measurement: according to the probe

*accuracy of the device without probe in range -90 to +100 °C is ±0.2 °C, accuracy of the device without probe in range +100 to +260 °C is ±0.002 x MV (measured value in °C)
** at temperature 23 °C in the range of 0 to 90%RH (hysteresis ±1% RH, non- linearity ±1% RH, temperature error 0.05 %RHC at 0 to 60 °C)

* at ambient temperature T < 25°C and RH > 30 % (for details see graphs at instruction manual)
**** the device it is possible to deliver with a range of 0 to 10 000 ppm

References

• Manufacturer of Dataloggers, Thermometers, Hygrometers,CO2 meters
• COMET System - measuring instruments
• COMET System - measuring instruments

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