Products and systems for cold chains

Wireless Temperature and Humidity Monitoring System

Since 2009 year PJSC TERA designs, manufactures and installs wired / wireless automatic temperature and humidity monitoring systems (ATHMS) for the companies being into pharmacological and food industries. Every complete monitoring system successfully passed required validated procedures by TERA’s customers corresponding to requirements GMP, GDP, GCP, GPP, FDA 21 CFR (Part11), GAMP and HACCP.

WHAT’S INCLUDED

ATHMS includes the following parts:

  1. CS10600 Data Logger is using for data collecting of wireless transducers. This device acts several functions: aggregates and saves information receiving from transducers, provides with data access via Internet using the web interface of the pre-installed software inside, notifies alarms, functions as database server. Data Logger has RS485 port for Y6.05-K-868 Net Coordinator connection. Internet access implements via Ethernet or built-in 4G/LTE modem. Data Logger is fixing inside of a plastic box along with N1-UPS Uninterruptible Power Supply. It’s available to connect up to 8 Y6.05-K-868 Net Coordinators per Data Logger. Data Logger is able to aggregate and save data of up to 30 wireless transducers. Non-volatile memory is able to store information of the period by over than 10 years.
  2. Y6.05-K-868 Net Coordinator serves as a gateway between the wireless transducers and Data Logger. Net Coordinators work as access spots by 868 MHz frequency. The signal covers 50 – 300 meters of area by radius depending on circumstances. Net Coordinators are connecting with Data Logger by RS485 line. One Net Coordinator is possible to serve for up to 12 wireless transducers.
  3. Y-Case Wireless Temperature Transducers with ZigBee 868MHz and Y-Case Wireless Humidity & Temperature Transducers with ZigBee 868MHz designed for placing it in warehouses, on shelvings, shelves, in freezers and refrigerators. Transducers has dual-channel temperature and humidity sensor. It may have one or two more channels for temperature probe connection. An external temperature probe measures temperature of goods inside of a package or inside of a freezer. Transducers are powering by two replaceable batteries and using 868 MHz frequency radio signal for data transfer. Transducers have magnetic holder for comfortable placing.
  4. The shield with the uninterruptible power supply supplies with power CS10600 data logger. It transduces mains power 230 VDC to 24 VDC. The shield contains two replaceable AGM storage batteries (gel-based lead-acid) with capacity 9 Ah for each one to power the data logger and a net of coordinators uninterruptibly during 20 hours in a case when there is no mains power (depends on a number of coordinators on RS485 line).
  5. LOCAL WEB is pre-installed application in Data Logger, which uses WEB HMI interface, developed with web technologies. This application developed to fulfill all necessary functions of the monitoring system in real-time, namely transducer’s data collecting, processing, displaying and archiving, notifying alarms, database storing, user’s action and event logging, access, roles and rights administration, data export, reports and graphs generating, etc. The application requires Internet or Ethernat access and Google Chrome browser to get access for users.

 

DIAGRAM

Temperature and humidity monitoring system operation diagram

 

PLACING MONITORING SYSTEM IN THE WAREHOUSE

How to place a monitoring system in a warehouse

Loggers

 

FEATURES

Advantages

  • The most budget option for nowadays warehouses with tall and broad zones on shelvings for storage using pallets.
  • Transducers can be easily mounted or dismounted.
  • The user is able to place transducers on his own.
  • Wireless monitoring system is cheaper, because installation is pretty quick and easy.
  • No need of transducers cabling.
  • Wireless monitoring system can serve for mapping (critical spots searching).

Disadvantages

  • Transducer radio signal may be blocked by physical obstacles (pallets, goods, walls, etc) or by radio interference.
  • Radio signal distance is about 50 – 100 meters indoor without straight visibility between a transducer and a net coordinator.
  • Battery charge depend on response time (more response time, more discharge).
  • Actual response time is no more 1 time per minute.
  • The need to make preliminary engineering inspection for radio signal passage between transducers and net coordinators referring to placement.
  • The need of cabling RS485 line for net coordinators.

PLACING MONITORING SYSTEM ON SHELVINGS WITH PALLETS

Triple-channel transducer is using for air temperature and humidity monitoring by shelf storage. A transducer itself with built-in sensor is placing on top of a shelving by magnetic holder (a green mark on an image). An external probe is placing on bottom of a shelving (a red mark on an image), that’s connected to a transducer by M8 connector. An external antenna tips on the highest spot of a shelving by a magnetic holder (a green mark on an image). A transducer with an external probe hides inside of rack to avoid physical damage while loading goods.

Triple-channel transducer is using for air temperature and humidity monitoring by shelf storage. A transducer itself with built-in sensor is placing on top of a shelving by magnetic holder (a green mark on an image). An external probe is placing on bottom of a shelving (a red mark on an image), that’s connected to a transducer by M8 connector. An external antenna tips on the highest spot of a shelving by a magnetic holder (a green mark on an image). A transducer with an external probe hides inside of rack to avoid physical damage while loading goods.

How to place loggers on pallet racks

PLACING MONITORING SYSTEM IN REFRIGERATORS

Single-channel and dual-channel temperature transducers are using to check air temperature inside of refrigerators (freezers, refrigerator chests, climate cameras). A transducer itself is placing on the refrigerator body by a magnetic holder. One or two external temperature probes are placing inside of a refrigerator. A cable passes either through a technological hole in a refrigerator (if exists), or through refrigerator’s door corner. If a refrigerator has two cameras with temperature difference, then it’s using two external temperature probes, that’re connected to a transducer by M5 connector (2-15 Model). Installation for a refrigeration room require to make a hole in sandwich-structured composite by two sides, to mount a flange with a cable gland, and to lay an external temperature probe through it.

Such approach has several advantages. Firstly, a transducer with indication placed outside, and it allows to view temperature value without open the door. Secondly, a refrigerator doesn’t obstruct radio signal passage. Moreover, the batteries are not under extreme low temperature.

How to place loggers in refrigerators

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