ADS Environmental Services Model 3600 530002 A2 - Manual (Page 128)

A-10 ADS 3600 Flow Monitor O&M Manual
Communications
The following topic contains information about the EMU, SCADA EMU, and DAA.
EMU
The following table contains information and specifications for the EMU.
Functional
Description
Provides communication link between telephone network interface and 3600 monitor;
contains modem, battery, and intrinsic safety barrier; and provides modem power
Housing Painted steel
Dimensions 15¾ inches (40 cm) high x 12¼ inches (31 cm) wide x 4 3/8 inches (11 cm) deep
Operating
Temperature
0 ° to 60° C (32° to 140° F)
Power Six 1.5-volt D-cell batteries
Inputs and
Outputs
Input: Voice-grade telephone line
Output: Communication cable to 3600 monitor
Communication Voice-grade telemetry at 1200 bps (United States) or 2400 bps (International)
SCADA EMU
The following table contains information and specifications for the SCADA EMU.
Functional
Description
Provides communication link between telephone network interface (or RS-232) and
3600 monitor; allows RS-232 interface between 3600 monitor and SCADA system RTU;
contains modem, multiplexer board, power supply, backup battery, and intrinsic safety
barrier; accepts external power
Housing Painted steel
Dimensions 15¾ inches (40 cm) high x 12¼ inches (31 cm) wide x 4 3/8 inches (11 cm) deep
Operating
Temperature
0 ° to 60° C (32° to 140° F)
Power External AC power with NiCad battery for 6-8 hours operational power during power
failure
External DC power
Inputs and
Outputs
Inputs: AC or DC power; voice-grade telephone line
Outputs: Communication cable to 3600 monitor; RS-232 interface to SCADA system
RTU
Communication Direct: RS-232 serial communication
Remote: 14.4 Kbps modem