ISS Online Catalogue    West Instruments    West Instruments Advanced Controllers    Option Modules

	Relay Module A maximum of two additional relays may be fitted to a controller, provided no re-transmission or transducer power supply is required. They can function as alarms or one can be a second control output (for Heat/Cool applications) Rating is 2A 240Vac non inductive  Price:  £20.00   (Excluding: VAT at 17.5%)
Analogue Retransmission (Recorder Output) Module An analogue retransmission module that can be configured for 0/4-20mA, 0/1-5V or 0/2 -10V. It can be ranged over a reduced portion of the total instrument range - if the instrument is set for 0-760C, the retransmission can be configured to to be say 0-300C for the full 4-20mA  Price:  £25.00   (Excluding: VAT at 17.5%)
	Transmitter Power Supply This module gives a nominal 24Vdc 20mA supply suitable for powering two wire transmitters. The advantage of using the internal supply is that wiring is simplified and sigle loop integrity is maintained  Price:  £26.00
RS485 Comms module This module allows up to 32 instruments to be connected on one 2 wire RS485 data highway using West ASCII protocol. Modbus protocol is available, but to special order only. Please email your enquiry. See S4SCADA.com for suitable Software packages  Price:  £38.00   (Excluding: VAT at 17.5%)
	Dual Setpoint Module This module allows the remote selection (by contact closure) of a second setpoint value. Note that this module is mutually exclusive with the RS485 comms module.  Price:  £19.00   (Excluding: VAT at 17.5%)