5
Introduction
WiFi sensors are designed for autonomous measurements, processing, and
alarming of the physical quantities. Measurement of temperature, relative
humidity, barometric pressure, CO
2
concentration are supported. Inputs and
measurement ranges depends on device model and cannot be changed by
end-user. Device communication is done via WiFi wireless network. Device
needs to be powered from external adapter which is part of shipment.
Key features:
•
Measurement from external and internal sensors temperature, relative
humidity, barometric pressure, CO
2
concentration. From relative humidity
values are calculated additional humidity quantities like a dew point.
•
Monitoring and alarming of the measured values to the pre-set limits. Two
alarm limits are supported for each measured quantity with selectable
direction.
•
Acoustics and optical LED signalisation of the alarms.
•
Measured values are shown on a large LCD display with backlight.
•
Holding of minimum and maximum values from device start-up for each
measured quantity. Minimum and maximum values can be reset by the
end-user manually.
•
Communication via 2.4 GHz WiFi network. Can be used with wireless
infrastructure which is already available at place of installation.
•
Device is equipped by USB-C connector which is used for powering of the
device. Same connector can be used for device configuration if needed.
•
Measured values can be shown on device web pages and can be
transferred into data acquisition system ATAL Onlinesensor or ATAL
Database.
•
3
rd
party data acquisition systems are supported via JSON, XML and
Modbus TCP protocols.
•
Device has integrated internal non-volatile memory. Memory is used for
recording measured values in case WiFi or internet connection is lost.
•
Occurrence of alarm states can be reported by the email sent from the
device.
•
Device configuration via web pages from computer or cell phone. Initial
device provisioning is done via access point mode.
•
The device delivery includes traceable calibration certificate. Declaration
of metrological traceability of etalons is based on requirements of EN
ISO/IEC 17025 standard.