Reliable wireless equipment management (Monitoring & Control) is essential for process operators to detect any equipment conditions and failures in order to perform corrective measures. Typical problems facing process operators are often the difficult access to the sensors, cable breakage, cable theft and the time to repair the cable.
ESS has designed a Wireless Management System called the ESS TETRA-
Various remote analog and digital sensors can be used with a choice of different communication technologies.
The ESS TETRA-
Low data bandwidth utilization due to optimized application layer protocol
Up to 4 analogue 4 – 20 mA or 0 – 20 mA instrumentation inputs
12 bit A/D, accuracy better than 1%
20 Digital Inputs optically isolated with lightning protection
8 Digital Outputs with open collector connections
Efficient LED display of IO’s including analog values (0, 4, 8, 12, 16 & 20 mA)
Logic Control via user friendly interface (option)
Compact DIN rail design and plug in connectors for IO’s
On board SD card enabling the user download of configuration files, control files and firmware upgrades via LAN port or reprogramming SD card
TETRA TMO & DMO operation, Air Interface Encryption & TEI 1/2/3/4 supported
RF Power: 1.8 Watts (Class 3L), Adaptive Power Control Supported
Receiver static sensitivity -
External Speaker/Microphone connection via facility connector (optional)
Frequency bands 380-
Status messaging, SDS messaging, Circuit Mode and Multi-
DMO Group Status & SDS Repeated (optional)
Operational Temperature -
Connectivity to SCADA systems (OPC) and/or ESS Status and Alarm Control Room Monitoring & Control software servers and clients.