MODEL 5400 : Satellite Data Transmitter

General Description:

HydroLynx offers our 5400 series Satellite Data Collection Units (DCU) as a solution for problematic terrestrial radio paths or as a redundant telemetry solution. A satellite radio transmits data via ORBCOMM, a real-time commercial satellite telemetry provider. The satellite data radio “pings” a low earth orbiting satel­lite when data is to be transmitted by the DCU. An error-free communication link is established between the remote site and the ORBCOMM ground station. Data is routed to a dedicated server maintained by ORBCOMM. The client’s NovaStar ALERT base station automatically pulls the data from the server via an Internet connection.

Data transmitted from a remote station normally arrives at the ALERT base station within one minute but on occasion may take up to ten minutes. This path provides data on a time scale that is not matched by the GOES satellites which often have latencies of one hour or more.

The Model 5400 Satellite DCU can be configured as a rainfall station or rainfall and water level station. Both fixed interval and event data reporting are supported. A programmable fixed reporting interval is configurable from 5 minutes to 24 hours. Rainfall accumulator, water level, and battery voltage are transmitted for all fixed interval or event reports.

Event reporting of precipitation is started whenever the bucket tips. A timer is started that transmits one minute rainfall accumulations every five minutes until the rainfall stops.

Water Level event reporting is initiated when the water level changes by an amount, programmable over the range from 0.1 to 2.0 feet. The sensor sample interval is programmable over the range from 5 minutes to 1 hour. Data from all sensors are included in the Event-Based Water Level transmission.

Slope and Offset variables are included in the field acces­sible configuration to convert raw water level sensors data into Engineering Units (feet, meters, etc).

MODEL 5400 : SPECIFICATIONS

Environment

Operating temperature: -40 to 65 °C

Storage temperature: -60 to 75 °C

Operating humidity: 0 to 100 %RH, non-condensing

Model 5400 Logic Board

Memory size: 1 MB CMOS EPROM, 256 kB CMOS RAM,

768 kB battery backed

Manual controls: Reset, Test, and Programming switch

Diagnostic LEDS: Time set, Digital input event, TX-on

Stand by current: <100 µA

Supply voltage: 10.5 to 18.5 Vdc

(12.2 to 14.5 Vdc battery operated with radio)

Serial port baud rate: 9600

Transmitter baud rate: 9600

CPU type: PIC18F252 (20MHz)

Clock: Real-time clock

Digital inputs: 2 digital up/down channels,

up to 50 event triggers/second

Analog inputs: 3 channels (1 external, 2 internal),

1 external analog channel (0-5 Vdc), 16-bit resolution,

1 internal channel for battery, 1 internal channel for temperature

Analog supply voltages: Vbatt (12 Vdc nominal) non-switched,

+12 Vdc non-switched, +5 Vdc non- switched,

Vsw (12 Vdc nominal) switched, Vref (+5 Vdc) switched

Serial inputs: 1 for displays and NMEA0183 and NMEA2000

sensor interfaces

RS232 inputs: 1 for programming and data downloading

Satellite Radio

Manufacturer: ORBCOMM

Modem: ST2500

Transmit Frequency: 148 to 150.05 MHz

Transmit Power: 5 Watts

Receive Frequency: 137 to 138 MHz

Dynamic Range: 40 dB minimum

Sensitivit

  Minimum BER: E-5@ -118 dBm

  Typical BER: E-5@ -120 dBm

Power Requirement

  External: 9 to 36 Vdc

  Battery: 8 or 12 Vdc

Power

  Transmit: 2.5 A max. @ 12v; 2.0 A max. @ 15v

  Receive: 90 mA

  Power Save Receive: 60 mA

  Sleep: 50 µA typical, 100 µA maximum

Position Accuracy GPS: <5 m CEP

Physical

Enclosure: Aluminum canister

Size: 8 in. diameter x 23 in. high

Weight: 19 lbs with battery

Shipping weight: 12 lbs (battery shipped separately)

Sensor inputs: Keyed MS male connectors

  5400-541 Digital Precipitation Input

  5400-901 Digital Precipitation Input,

1 Analog Water Level Input

  5400N1 Digital Precipitation Input,

1 Analog Water Level Input

Battery: 12 Vdc, 18 Amp-hour rechargeable gel cell

External 12 Vdc connector: 3 pin MS male connector

Antenna: BNC female bulkhead connector

Serial console: DB9 female connector on board

MODEL 5400 : OPTIONS

5400RS232: 7 pin MS Male Bulkhead Connector

5400-54
Satellite Transmitter in Round Canister

• Satellite Radio
• 1 Precipitation Input

5400-90
Satellite Transmitter in Round Canister

• Satellite Radio
• 1 Precipitation Input
• 1 Analog Water Level Input

5400N
Satellite Transmitter in NEMA 4X Enclosure

• Satellite Radio
• 1 Precipitation Input
• 1 Analog Water Level Input