Table of Contents
Advertisement
Quick Links
W
CO2, H
t
s
ireless
umidity and
emperature
ensor
rCt Detailed Installation and
Commissioning Guide
Copyright © 2019 Echoflex Solutions, Inc.
All rights reserved. Product information and specification details subject to change
Document number: 8DC-5771 Rev: 1.2 Released: 2019-05
Page Page1 RTC CO
, Temperature and Humidity Sensor Configuration Guide
2
Advertisement
Table of Contents
Related Manuals for ETC echoflex RCT
Summary of Contents for ETC echoflex RCT
- Page 1 CO2, H ireless umidity and emperature ensor rCt Detailed Installation and Commissioning Guide Copyright © 2019 Echoflex Solutions, Inc. All rights reserved. Product information and specification details subject to change Document number: 8DC-5771 Rev: 1.2 Released: 2019-05 Page Page1 RTC CO , Temperature and Humidity Sensor Configuration Guide...
- Page 2 Echoflex intends this document, whether printed or electronic, to be read in its entirety. Page 2...
-
Page 3: Table Of Contents
Table of Contents Overview Document Conventions �������������������������������������������������������������������� 1 The RCT CO2 Sensor ������������������������������������������������������� 2 Radio Communications �������������������������������������������������������������������� 2 Receiver Proximity ��������������������������������������������������������������������������� 2 Performing a CO2 Background Calibration ���������������������� 3 Reading the CO Concentrations ������������������������������������ 4 Light Harvesting Transmitter Description ������������������������ 5 LED Indication ���������������������������������������������5 An example of determining exact CO value from blink code: �������... - Page 4 Table of Contents Page 4...
-
Page 5: Overview
Overview The CO sensor (also referred to as the sensor in this guide) is a wireless, energy harvesting sensor that : • monitors CO levels from 0-2000 ppm, • room temperature in the range of 0-51°C (32°F to 124°F) and •... -
Page 6: The Rct Co2 Sensor
The RCT CO Sensor The RTC is specifically designed for building systems where indoor environmental quality and potential savings from utilizing CO based demand controlled ventilation is desired. The RTC is a versatile, wireless CO , temperature and humidity transmitter that operates based on energy harvested from indoor ambient light. -
Page 7: Performing A Co2 Background Calibration
taken to insure proper reception of the sensors transmissions at the receiver, refer to sections “Test Operating Modes” and ‘Installing Wireless Devices”. The RCT comes populated with a CR2032 coin cell battery. The battery is not required for normal operation when Note: the RCT receives adequate natural or artificial light. -
Page 8: Reading The Co Concentrations
inside of the sensor is not a valid or accurate method of calibration. For commissioning purposes, the best way to evaluate the sensor is to compare the sensor to a hand held CO sensor that has recently been calibrated at approximately the same altitude (± 500 ft). Reading the CO Concentrations The RCT does not have a digital display but it is possible to... -
Page 9: Light Harvesting Transmitter Description
Light Harvesting Transmitter Description In order to best manage power, the transmitting interval of the RCT is automatically managed dependent on ambient light levels, rate of measurement change and amount of power stored in the sensor. Telegrams are sent at the following intervals: •... -
Page 10: An Example Of Determining Exact Co 2 Value From Blink Code
These LEDs are also used as feedback for the Test Note: functions To determine the exact CO value, press the function button on the side of the unit. The LEDs will flash in sequence to indicate the concentration where: • Green blinks = 500 ppm/blink •... -
Page 11: Installation
Installation The RCT can be mounted on any surface; glass, stone, concrete, wallboard, cubicle partitions, etc. The sensor can be mounted using screws (not supplied) through the removable back plate (2 keyholes or using double-sided tape or Velcro™ (not supplied). -
Page 12: Linking The Rct Sensor To A Receiver
Linking the RCT Sensor to a Receiver This process requires the controller or receiver to be mounted and powered and within range of the RCT sensor to be linked. The sensor is a solar powered device that absorbs energy through a solar panel storing it for use during low light periods. - Page 13 Test3:REDLEDflash,CO2BackgroundCalibration 1) Place the sensor(s) in outside air above 32ºF (0ºC), and out of direct sunlight for 15 to 60 minutes. Avoid areas where people are lingering so the background CO2 readings are not affected. The sensor will take the lowest CO2 recorded since its last calibration cycle and assign this reading the value of 420ppm (outdoor air).
-
Page 14: TestOperatingModes
Test Operating Modes When entering test mode: if the red LED blinks and not Note: the green LED, place the sensor under a lamp for 1 hour or replace the battery. Battery (with voltage between 2.7 and 3V) is required for Note: installation and commissioning modes. -
Page 15: Co2BackgroundCalibration
from a non-operational condition. Discharge time indicates how long a fully charged sensor will operate in the dark. CO2 Background Calibration 1) Place the sensor(s) in outside air above 32ºF (0ºC), and out of direct sunlight for 15 to 60 minutes. Avoid areas where people are lingering so the background CO2 readings are not affected. - Page 16 3. Press the function button to cycle through CO2 calibration mode. • Green LED blinking - Automatic Background Calibration (ABC) enable. The sensor will self calibrate every 3 weeks in this mode. • Red LED blinking - ABC disable (if sensor is in an environment that may have sustained elevated CO2 levels).
- Page 17 Replacing the Battery The battery is a CR2032 coin cell and is supplied with the unit. The battery is not required for normal operation when the RCT receives adequate natural or artificial light. The battery must be used during installation and has enough power to run the sensor for 5 years without light.
-
Page 18: Guidelines For Installing Wireless Devices
Guidelines for Installing Wireless Devices Careful planning is needed when locating the receivers and transmitters based on the construction materials in the space and possibility of tenant’s furniture disrupting the transmissions. The temperature sensor should be installed in the space where the receiver is mounted and connected to the temperature control equipment however the signal will travel through material barriers. -
Page 19: Wireless System Layout Hints
Wireless System Layout Hints • Avoid locating transmitters and receivers on the same wall. • Avoid locating transmitters and receivers where the telegrams must penetrate walls at acute angles. This increases the material the telegram must pass through reducing the signal power. •... -
Page 20: ProductSpecifications
Product Specifications Carbon Dioxide Technology: Ultra Low Power, LED based NDIR Measurement Range: 0-2000 ppm Accuracy: ± 50ppm Altitude/Pressure Compensation: Built-in correction Self-Calibration: Automatic Background Calibration Resolution: 1 data byte (0-200 decimal), 10 ppm Temperature Range: 0ºC to 51ºC (32ºF to 124ºF) Accuracy: ±... -
Page 21: Agency And Regulatory Statements
Agency and Regulatory Statements Built in an ISO9001 certified facility FCC Part 15.231 (902 MHz models only) Contains FCC ID: STM300U The enclosed device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (I.) this device may not cause harmful interference and (ii.) this device must accept any interference received, including interference that may cause undesired operation.