The CAREL rTM (Remote Temperature Monitoring) system is used to monitor showcases and cold room temperature in supermarkets. Using a network of wireless sensors connected to a supervisor, the system records the temperature and logs the status alarms (HACCP).
The sensors do not need any wiring, as they feature a long-life battery (5/8 years) and ZigBee™
2.4 GHz wireless connection.
Installed directly inside the showcases or cold rooms, these sensors are ideal for retrofits, or new stores where access with a wired network is not possible.
Simple installation and configuration and no wiring mean considerable cost savings.
The main advantages of the rTM system, used in combination with the supervisory system, are:
temperature recording;
control of temperature thresholds and alarm logging;
control of the wireless signal, battery level and residual charge (mAh).
Advantages:
easy to install and configure;
no wiring and flexibility
to move the showcases;
reduction in installation costs and times, without partial or total closing
of the store;
monitoring independently
of the controller;
integration with the most
commonly-used BMS systems;
possibility to connect a wired Modbus® serial network to the Router-Bridge.
rTM SE
The rTM SE (second edition) system replaces the current
rTM.
The rTM SE system is available with new product codes,
as the improvements introduced regarding the ZigBee wireless communication protocol
mean it is not compatible with the previous series.
The CAREL rTM SE system consists of
the following components:
Battery powered sensors:
- two versions for two specific needs:
Temperature sensor fitted inside the showcase, version SE BP (Built-in Probe);
Sensor with two external NTC probe and two digital inputs, version SE EP (External
Probe) for showcases and cold rooms;
-sensor powered at 12 to 24 Vac;
Sensor with two external NTC probe and two digital
inputs, version EP1/Router SE (External Probe) for showcases and cold rooms.
This device also integrates the Router function;
Access Point. Wireless receiver that acquires data
from the various sensors in the ZigBee™ network, making such data available
to the supervisor via Modbus® RTU. Up to 30 sensors can be directly associated
with each Access Point, or a maximum of 60 if one or more Routers are used.
The supervisor (PlantVisorPRO or PlantWatchPRO) can thus see all the variables
in the rTM SE system;
Router. To be used when the distance between the
sensors and the Router exceeds 30 m, or if there are more than 30 sensors
in the network. There can be a maximum of 60 Routers in the wireless network,
48 of which are visible to the supervisor. The Access Point automatically
assigns a serial address in the order in which these are “associated”,
starting from 200 up to 247;
