1. External Detector Probe :
The G.M. Detector probe will be located external to the Monitor. It shall be housed in a suitable, airtight S.S./ Aluminium shell. Connecting cable between the detector and the monitor will be 10 mtrs (typical). Extra length optional.
2. Detector :
Halogen quenched cylindrical GM tube LND7165 (Energy Compensated) in place of non-energy compensated LND716.
3. Computer Interface :
The monitor will have a RS-485 Serial Communication port for interfacing with a PC. The PC and the monitor will operate in a host-slave configuration in a multi drop network through this interface.
The PC, as the host will give commands and send queries. The monitor will carry out the various functions as per the required information in response to the queries.
The firmware of the monitor will be able to send the instrument data like instrument ID, Instrument type, input range, display range, alarm settings, alarm data, current reading etc to the Host PC and carry out the setting of different parameters like instrument ID, Instrument type, input range, display range, alarm settings etc. The user will provide detailed list of the command and response for the Host-slave communication.
The detailed specifications for the interface will be as follows :
Type : RS-485 Multi drop Serial Communication Port, Half-duplex bi – directional communication
Protocol : MODBUS RTU
Bit Rate : Baud rate will be 9,600 by default. VB software & configurator will be able to communicate at these baud rates.
Device address is to be entered using PC. Address range is 0-99. Each of the units should have distinct address. This address is stored in EEPROM and whenever an address command is received from central console, if address matches to this monitor, it will respond to the queries.
Connector : 9 pin D-type connector
4. EMI / EMC Compliance :
Unit can be offered with EMI/EMC complaince on request at extra cost.
5. Networking Solutions :
Gamma Link Software GL910 (for RS485 Networking)
6. Hooter for aural Alarms :
A 230V AC powered hooter generating 100 db o/p with different user selectable tones can be offered in lieu of speaker.
7. Lock & Key :
This is not provided by default. It can be provided at extra cost only when the user orders specifically