Evoqua WALLACE & TIERNAN GMS PLUS, Оригинальное руководство пользователя, Страница: 23 / 116

GMS
plus
Functions
4.
23
Measuring ranges
passive mA sensors
The passive mA sensor measuring ranges are freely scalable
between 0 – 1000.
The sensor type and unit are variably definable.
mA outputs The sensor channel I and II gas concentrations and the
temperature I are output via analog outputs (4 – 20 mA).
Links An RS485 interfaces is integrated to link to the Process Monitoring
System, CMS, ChemWeb server and OPC server.
As an option, a configured Wallace & Tiernan RS232 printer can
be linked via the RS485 interface, if the printer distance is <15 m.
Safety functions The following safety functions are integrated into the control if
configured accordingly:
• Access code protection (level 1).
• Maximum value and average value over the past 8 hours are
displayed.
• Each sensor channel has two isolated alarm outputs with
adjustable switching threshold, delay and alarm mode
(latched, unlatched, etc.).
• For example, alarm 1 can be used as the preliminary alarm
and alarm 2 as the main alarm. Each alarm is assigned a
relay.
• A min and max limit value can be set for each temperature
measurement.
• The installed sensor alarm activates if there is an error on the
sensor (short circuit, line break, etc.).
• The sensor alarm is assigned a relay (K8). You may select
which sensor alarm can trigger the sensors (Sensor I, Sensor
II, Temp I, Temp II).
• Three variably definable common alarms can be configured.
Multiple assignments are possible, for example:
Alarm 1/2 of sensor I
Alarm 1/2 of sensor II
Power failure
Battery error
Temperature I Min/Max
Temperature II Min/Max
Test function The integrated test function simulates a sensor current that
corresponds to the measuring range end value. It can be used to
test the measured value display as well as the set alarms.