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900
MHz Spread Spectrum Radio for
Cathodic Protection Scada Networks
FGRCP
by FreeWave Technologies

A spread spectrum radio system for remote
monitoring of cathodic
protection systems, with no recurring monthly charges.

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Overview
Model FGRCP by
FreeWave Technologies is a board-level spread spectrum radio
with inputs and outputs for monitoring and reporting operational
values for cathodic protection on pipelines, tanks, pipe-to-soil
test stations, rectifier stations, pipeline pressure stations,
pigging stations, and underground facilities subject to
environmental corrosion. It takes telemetry automation of cathodic
protection systems to the next level with no recurring monthly
charges.
The FGRCP board level
radio is available in a preassembled LineMarker enclosure with solar
power system, antennas and conduit mounting bracket.
For more information, download our
two-page FreeWave FGRCP
data sheet in pdf format. Also, see the articles
New Radios Automate Pipeline Integrity Monitoring for Corrosion
Control, published in Pipeline and Gas Technology Magazine, and
Frequency Hopping
for Corrosion Protection, published in Water and Wastes Digest,
May 2008.
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Features
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Multi-Purpose,
All-in-One: Radio modem for monitoring rectifiers, pipe-to-soil
test stations, pressure monitoring, and pigging operations with just
one single device.
- No Reoccurring
Monthly Costs by owning your own communication network.
- Enhanced Security:
retains all data within company firewalls.
- Easily Integrates:
into existing radio networks leveraging existing investments in
supervisory control and data acquisition systems using open extended
Modbus network addressing.
- Frequency Hopping
Spread Spectrum: invented for Military use in WWII for Allied
Forces.
- High Speed
Communications: 115.2 Kbps true throughput.
- Long Range: up to 60 miles
line of sight, ability to extend range through repeaters.
- Error Free
Communications: 32 bit CRC with automatic retransmission.
- Industrial Grade
Specifications: Every FGRCP is 100% factory tested for full
range performance and temperature cycle tested from -40°C to +75°C.
- Repeater
Capabilities: Each FGRCP can perform as a Slave Radio, a
Repeater and simultaneous Slave/Repeater.
- Wide Supply Voltage
Range: 10 to 30V DC.
- Ultra Low Power
Consumption: Current draw is
less than 6 mA, 12V DC in sleep mode, and less than 86 mA in
receiving mode. In sleep mode, radio will awaken, synchronize and be
ready to transmit data is less than 150 µsec.
- Separate Diagnostics
Serial Port: Allows real time simultaneous local diagnostics and
setup without tying up the FGRCP main communication port.
- Separate RS232 Serial
Port: Allows the FGRCP radio to simultaneously communicate to
the I/O termination points and to auxiliary PLC’s, EFM’s, RTU’s,
etc.
- Enhanced Diagnostics:
including signal level in dBm and transmit current.
- RS232/RS485/RS422
Interface available with user programmability.
- Noise Immunity:
Robust communication performance in noisy, congested areas.
- Secure: Proprietary spread spectrum technology and user programmable
security features prevent detection or unauthorized access.
- No Obsolescence:
100% backwards compatibility with all FreeWave 900 MHz products.
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Benefits of Spread Spectrum Radio
Energy and Pipeline
Companies can meet the new Federal regulations,
lower their operating costs and enhance existing
cathodic protection systems through the use of two
tools, scada and telemetry.
1. SCADA.
Many companies own and operate their own supervisory
control and data acquisition systems (SCADA), thus
can leverage this existing capital investment in
scada by extending the data communication network
further to cover cathodic protection equipment as
well. A SCADA system is the backbone to a data
communication network that wirelessly communicates
to remote field devices like compressor sites, pump
stations, wellhead controls, LACT units, rectifiers,
pipe-to-soil test stations, etc. Extending the
existing network to manage cathodic protection
increases the robustness of the existing system as
well. For companies not currently operating a SCADA
system of their own, small host systems are
implemented with a minimal investment by local
integration companies.
2. Telemetry.
With a SCADA system in place, remote cathodic
protection field equipment is automated by
installing simple and cost effective, toll-free,
wireless radios on rectifiers, test stations,
pigging stations, and pressure test stations. Thus
extending the existing SCADA network and automating
the data collection function of cathodic protection
monitoring.

Model FGRCP by
FreeWave Technologies offers a multi-purpose,
all-in-one, cathodic protection, wireless, data
communication radio for monitoring & reporting:
1.
Impressed current rectifier output voltage and
current
2. Rectifier inlet power status
3. Rectifier interruption (automated or
manually operated)
4. Pipe-to-soil voltage potential
5. Galvanic anode potential
6. Pipeline pressure, temperature,
pigging operations
7. Communication integrity
8. Battery voltage
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Other features:
- Each FGRCP monitored
point is directly polled, monitored, alarmed and
trended through SCADA for near real-time operational
data. The FGRCP can automatically alarm back to
Operations through report by exception.
- Every FreeWave
Cathodic Protection Monitoring Radio acts as an
infinite data communication repeater site extending
the existing networks ability to reach further into
remote areas of operations.
- Many companies
already own other fine FreeWave products and the new
FGRCP cathodic protection monitoring radios easily
integrate with existing radios.
- Demand Poll
real-time updates from remote locations with no
windshield time, increased safety and no polling
costs.
- All functionality for one low front-end
purchase price with no product obsolescence or
monthly reoccurring costs or fees.
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FGRCP
Radio Specifications
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Rectifier Output Monitoring |
Voltage 0-100V dc, Current 0-20A. |
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Rectifier Status Monitoring |
Inlet power status monitoring, AC or DC. |
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Rectifier Interruption |
12V dc, DO relay output, user selectable. |
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Pipe-to-Soil Monitoring |
-2
to +3V dc |
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Auxiliary Analog Input |
1
to 5V dc or 4-20 mA |
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Integrated Solar Charging |
12V
dc charging circuit and controller |
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Frequency Range |
902
to 928 MHz |
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Output Power |
100
mW to 1 Watt |
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Range, Line of Sight: |
60
miles |
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Modulation |
Spread spectrum GDSK |
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Occupied Bandwidth |
230
kHz |
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Spreading Method |
Frequency hopping |
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Hopping Pattern |
15
per band, 105 total, user-selectable. |
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Hopping Channels |
50
to 112, user-selectable |
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Hopping Bands |
7,
user-selectable |
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Sensitivity |
-108 dBm for BER 1x10-6
-110 dBm for BER 1x10-4 |
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Selectivity |
20
dB at fc ± 460 kHz (2nd IF) |
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System Gain |
140
dB |
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Error Detection |
32
bit CRC, Retransmit on error |
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Data Encryption |
Substitution, Dynamic Key |
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Data Interface |
RS232, RS485, RS422 or TTL |
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Data Connector |
10-pin, locking ramp, header, data & power connector. |
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Diagnostics Connector |
20-pin header connector |
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Antenna Connector |
Board-Level Radio: SMA, threaded.
LineMarker Test Station: Antenna included. |
Power Requirements:
Transmit
Receive
Idle
Sleep |
At 12V dc:
500 mA
86 mA
21 mA
8 mA |
At 30V dc:
200 mA
12 mA
12 mA
3 mA |
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Solar Autonomy |
LineMarker Test Station: fully loaded I/O, 18 days with 1.25
safety factor |
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Electrical Classification |
Class 1, Division 2 (pending) |
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Operating Temperature |
Range: -40°C to +75°C, fully tested |
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Humidity |
0-95% non-condensing |
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Dimensions |
Board-Level Radio: 5” x 3.5” x 2” (H x W x D).
LineMarker Test Station: 30” x 4” x 4” (H x W x D). |
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Weight |
Board-Level Radio: 100 grams
LineMarker Test Station: 12 pounds |
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Mounting |
Board-Level Radio: Standoffs available or FGRCP bracket
mount.
LineMarker Test Station: 3" conduit riser pipe or 8x8
surface mount, flat adapter bracket. |
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