West 8080 1/8 DIN Dual Colour Indicator

TECHNICAL DATA

Features
Output Configuration	Up to 3 total., max 2 for Alarms, max 1 for retransmission of PV
Alarms	Process high, process low, direct acting, process high, process low reverse and logical OR
Viewable Values	Process variable, alarm values, maximum value, minimum value and elapsed time since reset
Human Interface	4 button operation, 5 digit 18mm high colour change display, plus set-up and alarm indicators
Temperature Version
Input	J, K, R, S, T, B, & N Thermocouple, 3 or 4 Wire PT100, 50Ohm per lead maximum (balanced)
Impedance	>100MOhm for Thermocouple
Accuracy	+/- 0.1% of input span +/- 1 LSD (T/C CJC better than 0.5°C)
Sampling	4 per second, 14 bit resolution
Sensor Break Detection	< 2 secs, all alarms activate
DC Process Version
Input	0-20/4-20/10-50mA, 0-5/1-5/0-10/2-10V, +/-100mV, +/-1V, +/-10V
Scaling	-19999 to99999, dec point as required. Up to 10 scaling points for non-linear applications
Impedance	>100KOhm for mV range, >950KOhm for V ranges, 10Ohm for 20mA ranges and 1Ohm for 50mA range
Accuracy	+/- 0.01% of input span typical (+/- 0.05% max) +/- 1 LSD
Sampling	10 per second, 14 bit resolution
Sensor Break Detection	< 2 secs (except zero based ranges), all alarms activate
Totalising of PV by Interval	Seconds, minutes or hours
Transmitter Power Supply	20-28V DC (24V nominal), max load 910Ohm (22mA at 20V). Fitted as standard
Outputs and Options
Alarm 1	Open collector NPN transistor (30VDC 100 mA max) and relay (Contacts SPDT 3Amp
Alarm 2	Open collector NPN transistor (30VDC 100mA max) fitted as standard. Optional relay (Contacts SPDT 3Amp resistive at 240VAC/5Amp at 110V), non-latching
Retransmit Output	0-20/4-20mA into 500Ohm max, 0-10/0-5V into 500Ohm min. Accuracy typically +/- 0.25% 250mS update
Digital Input	External security lock (also Tare function on Process Version). Volt free or TTL compatible
Communications	2 wire RS485, 1200 to 9600 baud. ASCII protocol
Operating and Environmental
Temperature & RH	0 to 55°C (-20 to 80°C storage), 20% to 95% RH non-condensing
Power Supply	100 to 240V 50/60Hz 7.5VA (optional 20 to 50V AC 7.5VA/22 to 55V DC 5W)
Front Panel Protection	IEC IP66 (Behind panel protection is IP20)
Approvals and Certification	CE, UL & UlC

DIMENSIONS

CONNECTION DETAILS

FIELD RECONFIGURATION

Input
Temperature Version - Configurable for probe type and range
Process Version - Configurable for signal type and range
Relay 1
Type is fixed as Alarm 1

Option Slot 1
Configurable as Alarm 2 via plug-in relay module

Option Slot 2
Configurable as Analogue DC Re-Transmit of PV using plug-in module

Option Slot 3
Temperature Version - Configurable for RS485 comms or Security Lock, via plug-in modules
Process Version - Configurable for RS485 comms or Tare/Security Lock, via plug-in modules

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