SeaHawk 10K User manual

Leak Detection
SeaHawk 10K
User Guide
Version 2.0

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Copyright and Trademark Notices
© Raymond & Lae Engineering, Inc. 2011. All rights reserved. RLE®is a registered trademark and
SeaHawk™, Falcon™, and Raptor™ are trademarks of Raymond & Lae Engineering, Inc. The
products sold by Raymond & Lae Engineering, Inc. are subject to the limited warranty, limited liability,
and other terms and conditions of sale set forth at http://rletech.com/RLE-Terms-and-Conditions.html.
Revision History
Rev. No. Date
1.0 April 2011
1.1 May 2011
2.0 August 2011

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Product Registration
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Submit registration information on the Support/Product Registration webpage at www.rletech.com.
Any information provided to RLE Technologies through the registration form will be regarded as
confidential. RLE will not sell or distribute any of the information to third parties. To read our Privacy
Policy, please visit our website: www.rletech.com.
Technical Support
Personal assistance is available Monday through Friday, from 8:00 a.m. to 5:00 p.m. Mountain Time.
A request for assistance may be sent to [e-mail].
Otherwise, please call us directly at: [phone], and press “2” for technical support.
The following information is located on the bottom of each SeaHawk 10K unit. Please have this
information available whenever a technical support call is placed:
Product Model Number
Product Serial Number
Product Manufacture Date

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RLE Product Warranty
Seller warrants to the Ultimate Purchaser (the purchaser who buys for use and not for resale) that all
products furnished under this order and which are manufactured by Seller will conform to final
specifications, drawings, samples and other written descriptions approved in writing by Seller, and will be
free from defects in materials and workmanship. These warranties shall remain in effect for a period of
twelve (12) months after shipment. If the Seller installs the equipment or supplies technical direction of
installation by contract, said one year shall run from the completion of installation, provided installation is not
unreasonably delayed by Ultimate Purchaser. Parts replaced or repaired in the warranty period shall carry
the unexpired portion of the original warranty. A unit placed with the purchaser on consignment and then
later purchased will be warranted for twelve (12) months from the time the Seller receives notification of the
Purchaser's intent to purchase said consigned item. The foregoing is in its entirety is subject to the provision
that in no case will the total warranty period extend beyond 18 months from date Seller ships equipment
from point of manufacture.
Products are NOT life and safety certified. In no event shall the Seller be liable for loss, damage, or expense
directly or indirectly arising from the use of the units, or from any other cause, except as expressly stated in
this warranty. Seller makes no warranties, express or implied, including any warranty as to merchantability
or fitness for a particular purpose or use. Seller is not liable for and Purchaser waives any right of action it
has or may have against Seller for any consequential or special damages arising out of any breach of
warranty, and for any damages Purchaser may claim for damage to any property or injury or death to any
person arising out of its purchase or the use, operation, or maintenance of the product. Seller will not be
liable for any labor subcontracted or performed by Purchaser for preparation of warranted item for return to
Seller's factory or for preparation work for field repair or replacement. Invoicing of Seller for labor either
performed or subcontracted by Purchaser will not be considered as a liability by the Seller.
The liability of Seller hereunder is limited to replacing or repairing at Seller's factory or on the job site at
Seller's option, any part or parts which have been returned to the Seller and which are defective or do not
conform to such specifications, drawings or other written descriptions; provided that such part or parts are
returned by the Ultimate Purchaser within ninety (90) days after such defect is discovered. The Seller shall
have the sole right to determine if the parts are to be repaired at the job site or whether they are to be
returned to the factory for repair or replacement. All items returned to Seller for repair or replacement must
be sent freight, prepaid to its factory. Purchaser must obtain Seller's Return Goods Authorization prior to
returning items. The above conditions must be met if warranty is to be valid. Seller will not be liable for any
damage done by unauthorized repair work, unauthorized replacement parts, from any misapplication of the
item, or for damage due to accident, abuse, or act of God.
This warranty shall be exclusive of any and all other warranties express or implied and may be modified only
by writing signed by any officer of the Seller. This warranty shall extend to the Ultimate Purchaser but to no
one else. Accessories supplied by Seller but manufactured by others carry any warranty the manufacturers
have made to Seller and which can be passed on to the Ultimate Purchaser.
Seller makes no warranty with respect to whether the products sold hereunder infringe any patent, U.S. or
foreign, and Purchaser represents that any specially ordered products do not infringe any patent. Purchaser
agrees to indemnify and hold Seller harmless from any liability by virtue of any patent claims where
Purchaser has ordered a product conforming to Purchaser's specifications, or conforming to Purchaser's
specific design.
Purchaser has not relied and shall not rely on any oral representation regarding the Product sold hereunder
and any oral representation shall not bind Seller and shall not be part of any warranty.

Contents
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1 Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2 Installation and Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Prepare for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Physical Connection Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Mount the SeaHawk 10K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Establish Physical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
TB1: Summary Relay (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
TB2: Leader Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
TB3 and TB4: Input Power and EIA-485 Modbus Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Select Alarm Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Enable and Disable the Audible Alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Set the Re-Alarm Interval. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Connect the SeaHawk Leak Detection Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Connect Lengths of Sensing Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Secure Sensing Cable to the Floor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Apply Power to the SeaHawk 10K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Test the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Front Panel Controls and Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Manage Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4 Modbus Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Implementation Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Modes of Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Slave Address Field. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Function Field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Data Field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Error Check (Checksum) Field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5-1.2 Exception Responses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Packet Communications for the SeaHawk 10K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Function 03: Read Output Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Function 04: Read Input Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
RTU Framing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Calibrate Cable Length via Modbus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5 Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
6 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
A Configuration Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
DIP Switch Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
SW1 - Configure the SeaHawk 10K. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Configure the SeaHawk 10K Modbus Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

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Figures
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1 Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2 Installation and Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 2.1 SeaHawk 10K Physical Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 2.2 Mount the SeaHawk 10K. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 2.3 Relay Output (TB1) and Sensing Cable Connection (TB2) . . . . . . . . . . . . . . 15
Figure 2.4 Power and Modbus Connections (TB3 and TB4) . . . . . . . . . . . . . . . . . . . . . 15
Figure 2.5 Relay Output Connection TB1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 2.6 DIP Switch 5, SW1 - Latched or Unlatched Alarms. . . . . . . . . . . . . . . . . . . . 16
Figure 2.7 Cable Connection TB2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 2.8 DIP Switch 6, SW1 - Display Cable Length in Feet or Meters. . . . . . . . . . . . 16
Figure 2.9 DIP Switch 7, SW1 - Ohms per Foot Resistance . . . . . . . . . . . . . . . . . . . . . 17
Figure 2.10 TB3 and TB4 Power Supply and Modbus Connections . . . . . . . . . . . . . . . . 18
Figure 2.11 DIP Switch Settings for Modbus Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 2.12 SW2 DIP Switch Settings for Modbus Unit Address . . . . . . . . . . . . . . . . . . . 18
Figure 2.13 DIP Switch 8, SW 1 - Audible Alarm Settings . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 2.14 DIP Switches 3 and 4, SW1 - Re-Alarm Interval . . . . . . . . . . . . . . . . . . . . . . 19
Figure 2.15 SeaHawk Sensing Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 2.16 Secure the Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 3.1 Front Panel Controls and Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4 Modbus Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 4.1 DIP Switch Settings for Ohms/Foot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5 Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
A Configuration Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure A.1 SW1 Dip Switch Configuration Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure A.2 SW2 DIP Switch Settings for Modbus Unit Address . . . . . . . . . . . . . . . . . . . 41

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Tables
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1 Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2 Installation and Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 3.1 Front Panel Controls and Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4 Modbus Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 4.1 Exception Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 4.2 Read Output Register Packet Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Table 4.3 Output Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Table 4.4 Read Input Registers Packet Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 4.5 Input Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 4.6 Status Flags (Register 30001) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 4.7 Response Sample. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5 Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Table 6.1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
A Configuration Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

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CHAPTER
CHAPTER 0PRODUCT OVERVIEW
1.1. Description
As RLE’s most cost effective distance-read leak detection solution, the SeaHawk 10K reports
the presence of water and other liquids as detected by sensing cable.
Capable of accommodating up to 10,000 feet (3048m) of sensing cable, the SeaHawk 10K has
an audible alarm and can communicate via Modbus. As a stand-alone solution, the
SeaHawk 10K provides alarm notification and numeric distances on its front panel.
Integration into a Modbus network allows the activity and status of one or multiple
SeaHawk 10Ks to be managed from one central location.
1.2. Operation
Supervised System
The SeaHawk 10K is a supervised system – it continually monitors sensing cable and spot
detectors for continuity – and produces alarms for the following conditions:
Leak detection
Cable break
Cable contamination
Distance-Read Leak Detection
When the SeaHawk 10K's circuitry measures a current in excess of the user-defined leak
threshold, the unit's microprocessor computes the distance to the leak. The SeaHawk 10K then
annunciates the leak and communicates via Modbus to a master controller or a Modbus-
equipped monitoring system. The summary relay sends notification to an alarm panel or
monitoring system.

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1Product Overview
User Configuration and Communication
The SeaHawk 10K’s front panel display – which includes a four-digit LED panel and six LED
indicators – provides information about its status, including the following:
Leak detected
Cable fault detected
Power status
Configured unit of measure
Leak detection cable’s amperage value
Distance to leak or contamination
Length of installed leak detection cable
Self-test results
The two blocks of DIP switches on the SeaHawk 10K’s front panel are used for configuration.
DIP SW1 configures parameters such as leak and contamination thresholds, latching alarms,
and realarm time interval. The DIP SW2 is used to set the Modbus address for the unit.
The SeaHawk 10K also provides configuration capability and status information to a Modbus-
equipped system via its EIA-485 port.

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CHAPTER
CHAPTER 0INSTALLATION AND CONFIGURATION
2.1. Prepare for Installation
To install the SeaHawk 10K, you’ll need following supplies:
Included with the SeaHawk 10K
15 foot (4.57m) leader cable
End-of-line terminator (EOL)
Available from RLE, sold separately
12-24 VAC/VDC, 50-60Hz isolated power supply
SeaHawk Sensing Cable, up to 10,000 feet (3048m)
J-Clips
Available from other vendors
Electrostatic discharge (ESD) protection
2.2. Physical Connection Overview
The SeaHawk 10K contains two circuit boards:
The top circuit board houses operational controls and displays. SeaHawk 10K operational
information is found in Chapter 3.
The lower circuit board houses the connectors for:
– AC/DC power
– Relay output
– Leak detection cable
– Modbus communications.

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2Installation and Configuration
Figure 2.1 SeaHawk 10K Physical Inputs
2.3. Mount the SeaHawk 10K
The SeaHawk 10K can be mounted inside a panel or on a DIN rail. The device has two
adjustable orange clips on the bottom. Push the clips out to expose two screw holes that allow
the device to be mounted in a panel; push the clips in to mount it on a DIN rail.
Figure 2.2 Mount the SeaHawk 10K
AC/DC Power Connections (2)
and
Modbus EIA-485 Ports (2)
Relay
Output
Sensing Cable
Connection

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2Installation and Configuration
2.4. Establish Physical Connections
Figure 2.3 Relay Output (TB1) and Sensing Cable Connection (TB2)
Figure 2.4 Power and Modbus Connections (TB3 and TB4)
2.4.1 TB1: Summary Relay (optional)
Terminal Block 1 is a Form C relay output. This relay enables alarm notification through a
local or remote panel, master controller, or BMS whenever a leak, cable fault, or cable
contamination is detected.
1Insert the wires into the appropriate slots on TB1 to connect the relay output to the desired
panel or controller.
Figure 2.5 Relay Output Connection TB1
Relay Output
Sensing Cable
Connection
AC/DC Power Connections (2)
and
Modbus EIA-485 Ports (2)

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2Installation and Configuration
2Use DIP switch 5 on the SW1 DIP switch block to configure this relay as latched or
unlatched.
An unlatched alarm resets itself once a detected leak or cable problem has been resolved.
A latched alarm must be manually reset, even if the detected leak or cable problem is no
longer present.
Figure 2.6 DIP Switch 5, SW1 - Latched or Unlatched Alarms
2.4.2 TB2: Leader Cable
1A 15-foot (4.57m) section of non-sensing leader cable is supplied with each SeaHawk 10K.
The leader cable connects sensing cable to the SeaHawk 10K, since sensing cable cannot
connect directly to the unit. Insert its four stripped wires into the appropriate slots in TB2 –
from left to right: white, black, green, and red.
Figure 2.7 Cable Connection TB2
Note If the terminal connector is removed from the end of the cable, make sure the wires are in
this same order, W - B - G - R, when the connector is reapplied.
2Use DIP switch 6 in block SW1 to designate whether the distance on the display is shown in
feet or meters:
Figure 2.8 DIP Switch 6, SW1 - Display Cable Length in Feet or Meters
3RLE’s orange sensing cable has a resistance of 2.8 ohms per foot. Most other sensing cables
have a resistance of 4.0 ohms per foot. If you have questions regarding the resistance of

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2Installation and Configuration
your cable, please reference the cable’s data sheet. Set DIP switch 7 in block SW1 to the
appropriate resistance-per-foot value.
Figure 2.9 DIP Switch 7, SW1 - Ohms per Foot Resistance
2.4.3 TB3 and TB4: Input Power and EIA-485 Modbus Port
The SeaHawk 10K operates on either 12-24VAC or 12-24VDC power. A power supply is not
included with the SeaHawk 10K.
An isolated power supply must be provided for the SeaHawk 10K. A dedicated
circuit breaker must also be provided within close proximity to the SeaHawk 10K
and clearly be marked as the disconnecting device for the SeaHawk 10K leak
detection controller.
Do not connect 120/230 VAC to the unit, or damage will occur to the circuitry.
1Run a power supply to the location of the SeaHawk 10K, or use a DIN rail mountable
power supply and mount it next to the SeaHawk 10K.
2If you are installing just one SeaHawk 10K, use the two left-most pinouts on either TB3 or
TB4 (marked AC/DC) to connect power to the SeaHawk 10K. Insert the positive and
negative wires of the power supply into either of the pinouts; the SeaHawk 10K’s circuitry
will auto-correct.
If you are installing more than one SeaHawk 10K, use TB3 and TB4 to create a daisy-
chained power connection.
3If you are installing just one SeaHawk 10K and it will communicate via Modbus to a
Modbus-enabled controller, use the three right-most pinouts on TB3 or TB4 to connect the
SeaHawk 10K to an EIA-485 network.
If you are installing more than one SeaHawk 10K, use the appropriate pinouts of TB3 and
TB4 to create a daisy-chained Modbus connection.
WARNING

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2Installation and Configuration
A grounded shield contact is provided for connection to shielded cable. If the shield contact
is used, verify the power connector is properly grounded and there is no voltage potential
between units on the Modbus network.
Figure 2.10 TB3 and TB4 Power Supply and Modbus Connections
4Set the baud rate for the EIA-485 port using DIP switches 1 and 2 on SW1:
Figure 2.11 DIP Switch Settings for Modbus Baud Rate
Note The EIA-485 port is set to 8 databits, no parity, and 1 stop bit (8, N, 1).
5DIP SW2 is used to set the address of the Modbus device, which should be a number
between 1 and 254. Adjust the individual switches until their sum equals the Modbus
address. The following illustration shows the values of the DIP switches on the SW2 block
as well as two examples of how the DIP switches would be set for specific unit addresses.
Figure 2.12 SW2 DIP Switch Settings for Modbus Unit Address

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2Installation and Configuration
2.5. Select Alarm Options
2.5.1 Enable and Disable the Audible Alarm
The audible alarm is disabled by default. To modify this setting, adjust switch 8 on DIP SW1:
Figure 2.13 DIP Switch 8, SW 1 - Audible Alarm Settings
2.5.2 Set the Re-Alarm Interval
The SeaHawk 10K can be set to re-alarm – after a leak or cable fault has been detected, the
alarm will be re-sent at a designated interval until the alarm condition has been resolved. This
re-alarm triggers both the audible alarm and the Modbus register 30001 readout. The SeaHawk
10K can be configured to re-alarm after 4 hours, 8 hours, or 24 hours have passed.
The re-alarm option is disabled by default. Adjust the re-alarm setting with DIP switches 3 and
4 of SW1:
Figure 2.14 DIP Switches 3 and 4, SW1 - Re-Alarm Interval
2.6. Connect the SeaHawk Leak Detection Cable
IMPORTANT To avoid faulty leak detection readings, connect a minimum length of 35 feet (10.7m) of
sensing cable to the SeaHawk 10K.
The SeaHawk 10K is shipped with a 15-foot (4.57m) leader cable. This leader cable was
connected to the SeaHawk 10K in Section 2.4.2 on page 16. The following directions help you
connect sensing cable to the SeaHawk 10K.
2.6.1 Connect Lengths of Sensing Cable
1Unscrew the end-of-line (EOL) terminator from the end of the leader cable.

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2Installation and Configuration
2Attach the first length of sensing cable to the leader cable. Insert the male pins into the
female connector, and twist the collar on the female side of the connector to secure.
Figure 2.15 SeaHawk Sensing Cable
3Route the sensing cable according to your cable layout diagram. Attach additional lengths
of sensing cable as necessary.
4Secure the EOL terminator to the unoccupied end of the last length of sensing cable.
Note If the EOL terminator is not present at the end of the cable run, a cable fault will register.
5If you are using a reference map, compare it with the actual cable installation. Revise any
discrepancies created through the physical installation of the cable.
2.6.2 Secure Sensing Cable to the Floor
Secure the sensing cable to the floor with either J-clips (RLE part #JC), or one of the other
approved methods shown in Figure 2.16. Available from RLE and designed specifically for
use with sensing cable, J-clips are the manufacturer's recommended installation method.
To avoid contaminating the cable, clean the entire floor as much as possible. Use isopropyl
alcohol to clean the spots on the floor where J-clips will be placed.
Place one J-clip every 5 to 6 feet (1.52 to 1.83m) along the length of the sensing cable and
one at each turn of the cable. Use more J-clips if a tighter configuration is required.
If the cable is installed over an obstruction, clip the cable on both sides, as close to the
obstruction as possible.
The J-clip’s adhesive backing does not work well on porous concrete floors. RLE
recommends using a drop of silicone or another nonconductive adhesive to help secure the
J-clip to the floor.
IMPORTANT Do not install the cable directly in front of an air conditioner. Allow a minimum of 4 to 6 feet
(1.22 to 1.83m) between the unit and the cable. If the cable is too close to the air conditioning
unit’s air stream, the moisture from the humidifier may cause false leak readings. If the cable
must be installed in front of an air conditioning unit, place the J-clips 3 feet (0.91m) apart.