Grundfos Conex DIS-G, Installation And Operating Instructions Manual

Page: 13 / 348

English (GB)
13
8. Technical data 8.1 Signal inputs and outputs
8.2 Setting ranges for alarms / limit values
Caution
Observe the permissible temperature
range of the sensors!
Note
Observe the accuracy of the sensor!
Electronics I2C bus technology
Accuracy ± 1 %
Display LCD, 2 lines, 2 x 16 characters
Display languages German, English and French
Indication mode
In ppm for measured values of
both sensors
Permissible
temperatures • Operation: 0 to +45 °C
• Storage: -20 to +65 °C
Permissible
relative air
humidity
Maximum 90 % at 40 °C (no
condensation)
Power supply
• 230/240 V - 10 %/+ 10 %
(50/60 Hz)
• 115/120 V - 10 %/+ 10 %
(50/60 Hz)
Power
consumption
Approximately 5 VA
Material
(enclosure)
ABS, resistant to chemicals
Enclosure class
IP65 for wall-mounting
enclosure
Weight Approximately 0.8 kg
Connections
Screw terminals for cables up
to maximum 2.5 mm
2
Safety functions
Permanent sensor monitoring
or automatic sensor test,
interval between tests
adjustable from 0.5 to 14 days
Relay outputs
Five relay outputs, NO
(normally open); maximum
250 V/6 A, maximum 550 VA
ohmic load
• two relays for the limit
values of each of the two
sensors
• one alarm relay; free
assignment to the limit
values or to sensor test
(see below.
Signal inputs
• Two measured value inputs
(for amperometric sensors 1
and 2)
Signal outputs
• Two current outputs
(0) 4-20 mA, maximum
load of 400
Ω
, assigned to
the 0-5 ppm range
Switching point for
limit values
• Limit value 1 (preliminary
warning if exceeded) can
be set to any value within
the measuring range.
• Limit value 2 (warning if
exceeded) can be set to
any value within the
measuring range.
• Limit value 2 can be
delayed between 0-200
seconds.
• Hysteresis: 0 - 0.5 ppm.
• Limit value 1 and 2 can be
acknowledged. The
acknowledgement is
stored in a list of events.
Alarm relay
The alarm relay can be
assigned to any of the limit
values and/or the sensor test.