Related Manuals for SARAD Smart Radon Sensor
Summary of Contents for SARAD Smart Radon Sensor
- Page 1 Manual Smart Radon Sensor Radon monitor for building automation Version January 2020 Referenced documents Software-Manual Radon Vision SARAD GmbH Wiesbadener Straße 10 01159 Dresden Deutschland www.sarad.de info@sarad.de...
-
Page 2: Table Of Contents
ANALOGUE OUTPUT ........................16 4..20mA current loop ......................... 16 ALERT SWITCH ..........................17 SUPPLEMENTARY EQUIPMENT ....................18 Pressure sensor ..........................18 gas sensor ........................... 18 DISPOSAL INSTRUCTIONS ......................19 TECHNICAL DATA ........................20 Smart Radon Sensor .......................... 20 Wireless switch ..........................22 Manual_Smart-Radon-Sensor_EN_12-03-2020.docx... -
Page 3: Introduction
SARAD GmbH Introduction The Smart Radon Sensor is an innovative Radon monitor, designed for integration in building automatization systems. Thanks to the broad spectrum of interfaces one can integrate the sensor with relative small effort within an existing infrastructure. The high sensitivity allows for quick and precise determination of Radon value, so the device is suitable for controlling the ventilation systems. -
Page 4: The Instrument
SARAD GmbH The instrument Controls Fig. 1. - Front panel controls Fig. 2. - Bottom panel controls Manual_Smart-Radon-Sensor_EN_12-03-2020.docx... - Page 5 SARAD GmbH RS-485 port „D-“ RS-485 port „D+“ 4..20mA current loop „-“ (GND) 4..20mA current loop „+“ (Iout) DC external power supply „-“ (GND) DC external power supply „+“ (12÷24V) Switch output port 1 Switch output port 2 Tab. 1. - Ports definition of terminal block.
-
Page 6: Power Supply
Power supply Main power supply The smart Radon Sensor requires an external power supply in range from 12V up to 24V. The maximal current consumption does not exceed 50mA (including 20mA of current loop’s maximal signal and active LEDs, but without usage of the CO2 sensor). - Page 7 SARAD GmbH alkaline batteries do not suffer from excessive self-discharge process and therefore are able to keep their initial electrical capacity for over 10 years. Manual_Smart-Radon-Sensor_EN_12-03-2020.docx...
-
Page 8: Batteries Replacement
SARAD GmbH Batteries replacement For battery replacement, the rear cover has to be removed. To do that, both screws (A in fig. 3) at the backside must be unscrewed at first. After that, the cover can be detached by tilting as shown in picture 4. -
Page 9: Selection Of The Right Location For Exposure And Installation
Selection of the right integration interval It is possible to adjust the sampling interval of the Smart Radon Sensor between 1 and 255 minutes. From the physical point of view it makes no sense to choose intervals shorter than 30 minutes because the response time of the instrument is in that order. -
Page 10: Measurement
SARAD GmbH Measurement The measurement starts autonomously after replacing the batteries or connecting the main power supply. The first measurement result will be available as soon as the first sampling interval is accomplished. Newly acquired values will be appended periodically to the previously stored results. -
Page 11: Led Indicators
SARAD GmbH LED indicators The Smart Radon Sensor has three color LEDs at the front panel. Their purpose is to indicate the state of the instrument. The table below (tab. 2.) sums up all possible LED signals. Permanent ON RADON < 50% • AlarmTH(*) 50% •... - Page 12 3. RADON < 100% • AlarmTH Permanent ON CO2 < 1000ppm Permanent ON CO2 >= 1000ppm Tab. 3. - LEDs signals for Smart Radon Sensor with CO2 Sensor. The meaning of all other signals stays unchanged. Manual_Smart-Radon-Sensor_EN_12-03-2020.docx...
-
Page 13: Communication Interfaces
SARAD GmbH Communication interfaces For a communication between the Smart Radon Sensor and the data acquisition system two digital interferences are provided. The RS-485 standard serial interference allows user to integrate the instrument within corresponding network. The USB interface provides a quick way for sensors configuration and maintenance. -
Page 14: Implemented Functions
Selection of the desired operation protocol for RS-485 interface is performed with a „protocol switch“ placed at the bottom side of the instrument (fig. 2.). This slide switch in the „M“ position corresponds to the MODBUS protocol. The „S“ position of the slide switch activates the SARAD protocol. -
Page 15: Usb
The additional communication interface, conform to USB standard, allows user to read out the measurement data and to adjust the operating parameters of the Smart Radon Sensor. The interface requires a software driver which can be downloaded from the SARAD company website. Within the Radon Vision software the USB communication path appears as a new COM port. -
Page 16: Analogue Output
Analogue output 4..20mA current loop The Smart Radon Sensor provides an analogue output with current signal from 4 up to 20mA (so called „current loop”). This feature offers a reliable way for transmitting the measurement signal over long distances. The terminal ports for the current loop are designated in figure 2 and table 1. -
Page 17: Alert Switch
SARAD GmbH Alert switch The Smart Radon Sensor is equipped with a switch output which can be used for ventilation control or alert indication. The potential-free contacts of the switch will be short-circuited at the end of the sampling interval if the measured Radon concentration exceeds the alarm threshold. The output will be deactivated one minute before the subsequent interval ends. -
Page 18: Supplementary Equipment
SARAD GmbH Supplementary equipment According to the needs of the customer the Smart Radon Sensor can be equipped with additional sensors for example: pressure or CO2 sensor. Pressure sensor The barometric pressure can be measured in a range from 800mbar to 1200mbar. The sensor unit is fully calibrated and features temperature compensation. -
Page 19: Disposal Instructions
SARAD GmbH Disposal instructions Batteries and accumulators must not be disposed of in the garbage, but you are legally obligated to return them to the appropriate waste collection centers. The measuring instruments must be disposed of in the electronic waste or handed to the manufacturer at the end of their service life for proper disposal. -
Page 20: Technical Data
SARAD GmbH Technical data Smart Radon Sensor Radon measurement Operational principal Lucas cell with gross alpha counting Sampling method Diffusion Sensitivity > 2,5cpm/(kBq/m³) Range 1 ... 1MBq/m³ 1 hour @ 300Bq/m³ 1 day @ 300Bq/m³ Uncertainty (1) 1 day @ 50Bq/m³... - Page 21 2 x AAA/ LR03 batteries for power backup 16383 data records (approx. 2 years at 60min interval) Memory Measurement interval settable from1 to 255 minutes RS-485 (MODBUS RTU and SARAD protocol) 0 … 20mA analogous output (range configurable) Interface Alert switch (potential free contacts)
-
Page 22: Wireless Switch
SARAD GmbH Wireless switch Device Transmitter 2 inputs E.g. additional input for manual switch Frequency 433MHz With coding for safe transmission Range ca. 30m Power supply Battery CR2032 Good for 20,000 switching cycles 6 programmable groups (e.g. to connect Load switch (plug adapter)