Sensors and Systems
Base station, sender and router
the base station acts as the coordinator for a wireless network. It operates on one of 16 radio frequency channels available in the 2.4GHz ISM band. Range can be more than 1km, subject to environmental factors, and greater distances can be attained with the use of a wireless router. The internationally recognised IEEE 802.15.4 protocol allows several networks to share the same space without interfering with each other. The base station provides the following process outputs: four Open-collector transistor outputs. These may be used to drive external relays for pumps and alarms. The outputs will sink up to 50mA at 40V and are short-circuit protected. A 4-to-20mA current-loop driver. A serial communications channel provides full-duplex RS232 and half-duplex RS485 transceivers. This allows software to be developed for linking to PCs, dataloggers, PLCs and so forth (Future feature). A USB connection is also available
The wireless sender forms part of a wireless sensing system. It is always used with a base station, which acts as a coordinator for an IEEE 802.15.4 wireless network. The sender has a number of sensing inputs and will transmit sensor data at regular intervals to the base station for conversion to drive process outputs. The sensor inputs are as follows: four discrete inputs from external switches, such as level sensor float switches or other voltage free contacts. One analogue resistive input, such as a Resistive TM-DEE-LVCS. One 4 - 20mA current loop analogue input
A router may be added to a wireless sensor system in order to significantly increase the radio range and to improve communications reliability. The basic wireless sensor system comprises of a base station and a single remote sensor node (either a Sender or TM-DEE-LVCS-RF). The maximum achievable range between these two devices can exceed 1km. However, in many practical environments the signal can be attenuated by obstructions and fading as a result of multiple signal paths caused by reflections. These effects reduce the communications link quality and reduce the achievable range. The router enables you to overcome this by extending the range of the overall wireless system.
TM-FLTA is a base station for wireless sensors and I/O modules. TM-FLTA has 8 x 0-10 VDC otuputs that can be used to deliver the wireless sensor information. The sensor values can also be read via the Modbus. TM-FLTA monitors connected devices for any malfunctions and the low battery level.
Wireless sensors and accessories
The TM-DEE-LVCS-RF (Liquid Vertical Continuous Sensor - Radio Frequency) is designed to measure a continuous liquid level and transmit this information by radio to a wireless base station at regular intervals. The device is battery powered and wirelessly communicates in the 2.4GHz band using the internationally recognised IEEE802.15.4 protocol. The wireless range of the TM-DEE-LVCS-RF can reach up to 1Km. A significant increase in the range can be achieved by using one or more wireless routers. The simplest measurement system comprises an TM-DEE-LVCS-RF sensor communicating to a base station connected to a 4-20mA current loop indicator such as a Current Loop Indicator (TM-DEE-DCLI)
TM-KLUFL is a wireless battery operated transmitter using 868.30 MHz frequency and FSK modulation. Totally three signals can be sent to the base station; humidity, temperature and light level. Sensor elements for humidity and temperature are builtin but for the light level detecting is needed external LUX 11 sensor. There is a two-way communication between transmitters and the base station.
TM-TEFL wireless room temperature sensors are designed for temperature detection of indoor spaces. Wireless room sensors operate in 868.30 MHz range and are Lithium battery powered. The communication between the TEFL room units and the FLTA base station is two-way. The measurement readings are transmitted on change, or at least every hour.
TM-TEUFL is a wireless battery operated transmitter using 868.30 MHz frequency and FSK modulation. Totally two signals can be sent to the base station; temperature and 0-10 Vdc.
TM-HDHFL transmitters are made for detecting carbon dioxide concentration and temperature in the room spaces. TM-HDHFL-N is like TM-HDHFL, but with a display. Supply of 24Vac/dc is needed. FLTA base station and FLAN antenna is needed for forwarding the signals. FLSER tool is needed for commissioning.
TM-FLREP repeater can be used to extend and boost the range of wireless sensors in difficult environments. It is possible to us up to 8 repeaters with one base station.
TM-FLREP-U outdoor repeater can be used to extend and boost the range of wireless sensors in difficult environments. It is possible to us up to 8 repeaters with one base station.
TM-LAFL is a wireless battery operated detector using 868.30 MHz frequency and FSK modulation. Totally two signals can be sent to the base station.
TM-PAFL is a wireless pulse counter for Produal wireless communication system. The counter can be used to measure pulses from electricity consumption meters, gas flow meters or water consumption meters and transmit them to the base station.
The TM-RYFL-XS is a wireless I/O module which can be used to transfer measurements and control information. Communicating between the control system and I/O module is done through TM-FLTA base station Modbus connection. Two input signals can be forwarded and one relay output with changeover contacts can be controlled.