Detection, Protection, Innovation

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Key Product Features

  • Cost effective multi-channel sampling system
  • Suitable where detector placement is a problem
  • Approved for marine use
  • Multi-lingual capability

The Seafarer is the culmination of several generations of GMI sampling systems.  It has been designed to monitor gas levels on board ships and many other applications.  This system pumps potentially hazardous gas from a number of sample points, sited where the positioning of conventional gas sensors may not be practical.  This may be due to equipment security, cable routing, access for detector head installation/maintenance in harsh environments.
Gas samples are sequentially extracted for a variable time period by a central control unit via up to 48 fixed sample lines.  A high rate of sample is pulled by the main pump and then a reduced rate sample is passed across the sensor device to enable a fast response to hazardous conditions.  The central unit provides gas level read-outs with two alarm trip points per line, providing a range of signal outputs to the annunciator and for control functions.  The system can also provide for remote displays where several different locations need to be aware of the system status.
GMI has used our many years of sample system experience to ensure that this system combines high reliability with ease of use and installation.

  • 1-48 sample points
  • Monitor up to 4 gas types
  • Full indication of all operations
  • 4 Line alpha/numeric display
  • Line blockage and pump fail monitoring
  • Variable sample time for optimum cycle time
  • Selectable sample line sequence
  • No sample line purge delay
  • High integrity, comprehensive self check fault monitoring

Specification

Outputs

Sample Points
1-48

Sensors
1-4 - 4-20 mA input

Measurements
Combustible Gas:  LEL;% Vol.
Toxic Gas:  ppm;% Vol.
Oxygen:  % Vol.
Depletion/Enrichment
Refrigerant - ppm

Response time:  15 to 45 seconds

User Interface
8 Panel mounted push buttons:
Reset ; Scroll ; Hold ; Dim ;
Enter ; Down ; Up ; Select

General
LED/display dimming
User/Eng. password
LCD backlight
Event logging

PC - Event log/ Data log, data to and from system controls.
Relay Outputs
Global Low SPCO
Global High SPCO
Flow Fail SPCO
Power Fail SPCO
Cabinet Sensor SPCO

32 programmable relays + 32 optional
All contacts rated at 5A - 230v AC

Communication
RS232 - Data Stream
Modbus: 2 x RS485
Canbus:  Internal

Display

Alarms

4 line alpha/numeric indicates all functions and
status in text
Sample line locations - user settable
LED Indicators:
System Healthy, Main Power, Standby Power
High Gas Alarm, Low Gas Alarm, System Fail, Flow Fail, Sensor Fail, Comms. Fail,Skip/Hold, Sampling

Audible alarm, all alarm conditions

Power Supply

Environmental

230/115v AC 50/60 Hz

 IP 63 rated enclosure

 

Physical Properties

Dimensions:
800 mm (H) x 600 mm (W) x 360mm (D)

19 in. rack based option

Cabinet Colour:
Ash Grey (BS A01) 

Weight:  56 kg

Sample line size:  8 mm O/D; 6 mm I/D
Nylon; PTFE; Copper; Stainless Steel;
Max length 200 m, specials 300 m. +
Sample vent x 2-10 mm
Tubing entry - enclosure base/side option