In a way, it works like a home security system for your lab or facility, with advanced measurement and reporting capability. In other words, it is a combination of a local alarm, remote alarm + data recording system, and it is cloud based.
The system consists of three parts: 1) Scout modules 2) Base station 3) Fenolabs server. Scout modules are attached to your freezers, measure temperature, and send data to base station through wireless link. Base stations display the temperature of each freezer and relay data to Fenolabs server through an Ethernet link. The Fenolabs server stores temperature data in a database & presents it to you when you log in.
Measurement accuracy: ±0.2°C at 0°C after calibration
Adaptive polling, captures transient temperature changes
Ultra thin sensor cable, with diameter at 0.8mm
Battery life: up to 1 month when external power is off
Independent mesh wireless network, coverage up to 100ft/30m
You do NOT need to give out your WiFi password
Max number of scouts: 20
Ethernet: IEEE assigned MAC address, DHCP/Static IP
4GB MicroSD card, keeps a log of more than 10 years.
Battery life: up to 8 hours when external power is off
Different server clusters for different service regions
Servers distributed in three differnt geographic locations
Each server is capable of monitoring up to 100,000 freezers
Can be scaled up in a matter of minutes
Isolated from our frontend server
Temperature is measured by platinum Resistance-Temperature-Detector (RTD) and digitized by a 24Bit Sigma-Delta ADC. Platinum RTDs provide the highest accuracy in a range as wide as -100 - 150°C among all industrial temperature sensors. The 24Bit ADC provides a resolution of 0.025°C. The combination of platinum RTD and 24Bit ADC is typically found only in high-end precision instruments. Now we offer it to you free of charge.
Multiple measures are employed to prevent possible leakage along the sensor cable. First, cables with a diameter of less than 0.8mm are used to build the customized platinum RTD. As a comparison, cable diameters of typical temperature sensors are in the range of 2 - 5mm. Also, a customized silicone seal is installed along the sensor cable at the edge of the freezer's internal seal.
Connecting to the Cloud
Temperature data is first aggregated at the base station via wireless mesh network and then fed into the Fenolabs servers via Ethernet. The range of wireless mesh network exceeds 66ft/20m in typical laboratory settings, and can be as far as 132ft/40m if no barrier stands between the scout and base station. Up to 25 scouts can connect to one base station. If your lab has more than 25 freezers or resides in multiple locations, they can be monitored via multiple base stations. There is no limit on the number of base stations. The base station connects to the Ethernet via DHCP by default. Static IP can also be easily entered into the base station. Each of our base stations has its own unique MAC address assigned by IEEE Registration Authority.
Sophisticated fail-safe mechanisms were developed to ensure a successful delivery of reminder SMS to you. For data transmission, explicit confirmation and buffering are employed at every step. When data is transmitted from a scout to a base station, an explicit confirmation is sent back to the scout from the base station. If no such confirmation is received by the scout, the data will be sent again by the scout. The same mechanism exists when data is transmitted from the base station to the Fenolabs servers. The base station will send the data again if no explicit confirmation is received. Base stations will buffer alarm messages even when the Ethernet link is unavailable and an alarm has been trigered. The base station will send a request for a reminder SMS to the Fenolabs server once the Ethernet connectivity has been restored.
Backup power systems are built in to both the scout modules and the base stations. When the main power is unavailable, the backup battery in the scout modules can provide up to 1 month’s normal use. The rechargeable Li-Ion battery in the base station provides more than 8 hours use when the main power is unavailable and will be recharged when main power is back on.
As a result, reminder SMS will be sent to you immediately even when the main power is off in your lab, and will be sent to you as soon as the Ethernet is back online if a threshold has been breached while the Ethernet was down.
To ensure service availability, three backend servers are deployed at three different geographic locations: one as main server in San Francisco, one as backup in New York, and one spare server in Texas. The web server is physically isolated from backend servers.
Installation and Setup
Our monitoring systems are preconfigured based on an individuals needs before shipping to you. Only minimum setup is needed from you to get them to work.
Mount Base station at a location within 70ft/20m of all your freezers. Connect Ethernet cable and power adapter. Base station will power up automatically.
(Optional) If a static IP is assigned by your IT administrator, enter it together with network mask and gateway into base station as instructed in user manual. Base station will reboot automatically if needed.
Install battery and power adapter onto scout module, insert temperature sensor into freezer, insert silicone seal (unnecessary for regular refrigerators), and set temperature threshold.
(Optional) Print your favorite image and stick it onto scout modules or your freezers if you purchased nickname package.
Now you can start to watch temperature of each freezer displayed on the LCD of base station, and on our server.
And, most importantly, you can go on vacation or go home with peace of mind. You will get SMS reminder when a threshold is breached. Don’t lose any of your valuable reagents or samples collected by hardworking!