WIKA PEW-1 Serie Manual De Instrucciones página 5

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2. Design and function

The transmission of the measured pressure values to an IIoT platform is carried out at a preset sending interval. The

measurement and sending intervals, and also the alarm limits, for particular measured values can be configured over

the IIoT platform.

Using a mobile device with a local interface via Bluetooth

battery life, etc.) can also be queried on-site and the instrument can also be configured.

An update of the measured value only occurs in line with the set measuring rate! Until the next

measurement, the sensor transmits the last valid measured value.

2.3 Functional principle (model PEW-1000)

The model PEW-1000 uses the LoRaWAN

The last registered measured value is, optionally, transmitted via Bluetooth

an advertising interval of 1.25 s. The measuring rate can be defined independently of the transmission rate. The

model PEW-1200 can be configured such that, on triggering of an alarm, the measuring rate is changed, 4.5 "Alarm

description".

→ For details on the Bluetooth

documentation "Special documentation for BLE communication specifications, models PEW-1000 and PEW-1200".

→ For details on the LoRaWAN

specifications, model PEW-1000"

Examples for uplink contents:

Measured values

■

Notifications for fault diagnosis

■

Alarm parameters

■

Configuration ID (for the identification of changes in the measuring and sending rate)

■

Battery charge status in V

■

Example for downlink contents:

Configuration change (e.g. measuring rate, sending rate, alarm parameter etc.), which can be recognised by the system.

WIKA operating instructions, models PEW-1000 and PEW-1200

class A radio standard, which is designed for energy-saving operation.

connection, see chapter 3.8.2 "Bluetooth

, see: https://lora-alliance.org

communication protocol, see "Special documentation for LoRaWAN

Low Energy, the instrument status (current measured value,

in "periodic advertising mode" at

Low Energy" and the additional

communication