Critical Things ™ Wireless sensors installation guide | Critical Things | Wireless sensors Installation guide Version 2 – 23rd September 2019 EkkoSense Ltd Registered in England and Wales No.
Critical Things ™ Wireless sensors installation guide Copyright Notice All rights reserved. No part of this publication may be reproduced without the expressed written permission of EkkoSense Ltd.
Critical Things ™ Wireless sensors installation guide Contents 1. About this installation guide................................................................................ 5 2. EkkoHub and wireless sensors ............................................................................ 6 3. Installation preparation ....................................................................................... 7 Tools and safety equipment .............................................................................
Critical Things ™ Wireless sensors installation guide 13. EkkoHub LEDs .................................................................................................... 31 14. FCC Statement ................................................................................................... 32 EkkoSense Ltd Registered in England and Wales No.
Critical Things ™ Wireless sensors installation guide 1. About this installation guide This guide is aimed at sensor installers and explains how to install and use EkkoSense Critical Things ™ wireless sensors (EkkoSensors) and data receivers (EkkoHubs). The EkkoAir product is covered in a separate guide (EkkoAir Installation). EkkoSense Ltd Registered in England and Wales No.
Critical Things ™ Wireless sensors installation guide 2. EkkoHub and wireless sensors Critical Things ™ wireless sensors are designed to take accurate temperature and relative humidity measurements from the racks in a data centre. The sensors use radio to communicate their measurements to an EkkoHub wireless transceiver unit. The EkkoHub receives the measurements and then sends them to the EkkoLink data aggregator for transmission to the EkkoSoft application via an internet connection.
Critical Things ™ Wireless sensors installation guide 3. Installation preparation Before you install the EkkoSensors and EkkoHubs, you should make sure you have the appropriate Tools and safety equipment. You should also make sure you are familiar with the Installation workflow. When you install the sensors, you need to make sure they are positioned correctly on the server racks and that they are within range of the EkkoHub. The EkkoHub has a recommended maximum range of 20m from EkkoSensors.
Critical Things ™ Wireless sensors installation guide 4. Identify your wireless sensor The first step is to identify the type of sensor you have. The model is shown on the label on the back of the sensor. The first two characters correspond to the operating frequency. ES is 868.3MHz and FS is 923MHz. The operating frequency must match the receiving frequency of the EkkoHubs.
Critical Things ™ Wireless sensors installation guide 5. Using thermistor inputs on EkkoSensors The thermistor inputs on the EkkoSensors are configured for use with NTC thermistors with a nominal resistance of 10kΩ at 25°C and a ß value of 3435K at 25/85°C. This is commonly referred to as a Carel thermistor. Use of thermistors with other temperature characteristics will not give accurate results. The connection to the EkkoSensor uses a standard JST two pole HER-2 crimp housing with SHE001T-P0.
Critical Things ™ Wireless sensors installation guide Sensor B External 1 Sensor C External 2 The thermistor cable connectors push fit into the housings. When fitting the thermistors avoid touching the circuit board.
Critical Things ™ Wireless sensors installation guide EkkoSense Ltd Registered in England and Wales No.
Critical Things ™ Wireless sensors installation guide 6. Install a wireless sensor To install a wireless sensor, you need to: 1. Assess the location of the air inlets (see page 12) 2. Consider mounting requirements (see page 13) 3. Fit the wireless sensor (see page 15). You can then Add a sensor to EkkoSoft (see page 17). Assess the location of the air inlets You need to determine where the air inlets are positioned for the rack.
Critical Things ™ Wireless sensors installation guide Consider mounting requirements The sensors are supplied with a standard mounting clip that can be cable tied to a mesh rack front or fixed to a glass front using double sided tape. Alternatively, the sensor can be directly mounted to a suitable surface using double sided tape.
Critical Things ™ Wireless sensors installation guide Location for double sided self-adhesive foam tape. Location for double sided self-adhesive foam tape. On some sites, there are special requirements that you need to consider when you fit a sensor. Some common requests are: Sensors cannot be fitted to front panel and have to be hidden from view Flylead sensors must have their cable routed around the edge of the rack.
Critical Things ™ Wireless sensors installation guide Fit the wireless sensor Having located the air inlets and considered the mounting requirements the sensor can be installed. Some examples of suitable locations for the sensor in different situations are given in the following table: Rack type Air inlets Request Suitable sensor position Standard Front None Sensor: Central, near inlet, 1.7m above the floor. Flylead sensor (if used): Central, 0.5m from floor.
Critical Things ™ Wireless sensors installation guide Now that you have installed the sensor, the next step is to add it to the EkkoSoft software, so that it can be monitored (see Add a sensor to EkkoSoft on page 17). You may prefer to install all of the sensors and then add them to EkkoSoft afterwards. EkkoSense Ltd Registered in England and Wales No.
Critical Things ™ Wireless sensors installation guide 7. Add a sensor to EkkoSoft When you have installed a sensor, you need to add it to the Ekkosoft software so that it can be monitored. There are two ways to add a sensor to EkkoSoft. You can either use a 2D barcode scanner to scan the sensor’s QR code or you can enter the scanner’s ID manually. 1. Login to EkkoSoft on a laptop (internet connection required). 2. Select the data centre. 3. Select Visit Room. 4. Select Editor mode.
Critical Things ™ Wireless sensors installation guide 5. Select the rack that the sensor is attached to. 6. Expand the Advanced settings. 7. Select the Sensor ID field. 8. Connect a 2D barcode scanner to your laptop (via USB) and scan the sensor’s QR code. The QR code is on the label on the front of the sensor. It is also available on the LCD screen (ES-TDX-03 sensors only). If you do not have a 2D barcode scanner, you can enter the sensor’s ID manually.
Critical Things ™ Wireless sensors installation guide 8. Battery installation or replacement The EkkoSensors use a Lithium Thionyl Chloride ½ AA 3.6V battery. Use only SAFT LS14250 or Tadiran SL-750/S / TL-5902 batteries. To get to the battery remove the sensor back cover by undoing the screw. Avoid touching the circuit board. Remove screw Remove the battery by rolling it to the side and lifting it out.
Critical Things ™ Wireless sensors installation guide Replace the sensor cover by hooking the right hand side into the front section and tightening the screw. Battery handling and storage precautions Store batteries in a cool (preferably below 21°C and in any case below 30°C), dry and ventilated area, away from possible sources of heat, open flames, food and drink. Avoid exposure to direct sunlight for long periods.
Critical Things ™ Wireless sensors installation guide 9. Using TSX and THX sensors LED Button The button has two functions: • • A short press triggers the sensor to send a measurement message immediately instead of waiting for the next scheduled message. This may be useful during initial installation. A long press puts the sensor into configuration mode. The LED flashes briefly to indicate that the sensor is in configuration mode.
Critical Things ™ Wireless sensors installation guide 10. Using the TDX sensors LED Button The button has two functions: • A short press moves through the different display screens. The first press moving away from the main screen also triggers the sensor to send a measurement message immediately instead of waiting for the next scheduled message. This may be useful during initial installation. A long press puts the sensor into configuration mode.
Critical Things ™ Wireless sensors installation guide Browse the sensor screens To navigate between the sensor’s screens, press the button. Each time you press the button, the next available screen is shown. If the button is not pressed for one minute the sensor returns to the main screen. Main screen The main screen shows the current temperature and relative humidity measured by the internal sensor and the temperature measured by any thermistor sensors. At the top of the display, it shows OK or ALERT.
Critical Things ™ Wireless sensors installation guide Thermistor temperature measurements The next screens show the temperature measured by the thermistor sensors if fitted. Temperature measured by first thermistor sensor (Sensor B / External 1) Temperature measured by first thermistor sensor (Sensor C / External 2) Compliance The compliance screen shows the temperature range that is used to determine if the temperature is at an acceptable level (compliant).
Critical Things ™ Wireless sensors installation guide Statistics screens The next screens show a summary of the minimum, average, and maximum temperatures that have been measured by the internal sensor and any thermistor sensors that are installed followed by the minimum, average and maximum relative humidity measured by the internal sensor. There are minimum, average, and maximum values for the current hour, the current day, and the past seven day period.
Critical Things ™ Wireless sensors installation guide Graphs You can view the historical temperature data in a graph format on the sensor’s display. There are three graph screens available: Last Hour, 24 Hour, and 7 Day, each providing a graph for a different time period (last hour, last 24 hours, and last 7 days). All temperature measurement sources that are present are included in the graph so there can be up to three lines.
Critical Things ™ Wireless sensors installation guide 11. EkkoSensor specifications Parameter Specification Operating temperature range -10°C to 55°C (14°F to 131°F) Operating humidity range 0% to 100% non-condensing Temperature sensor) accuracy External inputs accuracy (excluding thermistor) (internal ±0.3°C typical (±0.5°F) measurement ±0.
Critical Things ™ Wireless sensors installation guide Parameter Specification Regulatory approvals (ES version) CE marked: Radio Equipment Directive (RED) 2014/53/EU Low Voltage Directive (LVD) 2014/35/EU Radio EN 300 220 EMC EN 61326-1 with reference to EN 301 489 Safety - EN 60950 Regulatory approvals (FS version) FCC rules CFR 47 Part 15.107 and 15.109 Class A FCC rules CFR 47 Part 15.247 EkkoSense Ltd Registered in England and Wales No.
Critical Things ™ Wireless sensors installation guide 12. Install EkkoHub The EkkoHub wireless transceiver unit receives the data messages from Critical Things ™ wireless sensors (EkkoSensors, EkkoAirs) and sends them to the EkkoLink data aggregator. To install an EkkoHub unit: 1. Find a suitable position for the EkkoHub (see page 29). 2. Fit the EkkoHub transceiver unit (see page 30).
Critical Things ™ Wireless sensors installation guide Fit the EkkoHub transceiver unit When you have identified a suitable location, you can fit the EkkoHub unit. 1. Open the side sections on the EkkoHub to reveal four mounting holes (two holes per side). 2. Feed cable ties through the holes and secure the EkkoHub to a cable basket. Alternatively, you can drill holes in the wall and fit screws through the holes in the Ekkohub casing to fix the EkkoHub in place.
Critical Things ™ Wireless sensors installation guide 13. EkkoHub LEDs The EkkoHub has four status LEDs. LED Function and expected status Power Flashes to indicate that the EkkoHub is receiving power. This must be Illuminated for the hub to work. If the LED does not light then check the cabling between the hub and the PoE switch and check that the PoE switch is powered Network Illuminates continuously to indicate that the EkkoHub has a connection to the EkkoLink.
Critical Things ™ Wireless sensors installation guide 14. FCC Statement The EkkoSense wireless sensors and EkkoHub comply with part 15 of the FCC Rules. Operation of EkkoSense wireless sensors and EkkoHub is subject to the following two conditions: 1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation.
