Reference data
51
Cleaning output
Number of output points 1
Output type
Active voltage contact output (connected supply voltage output)
Contact type
Relay contact, SPST (1a)
Contact capacity
250 V AC, 3A, 30 V DC, 3 A (resistance load)
Contact capability
Solenoid valve drive for cleaning
Setting
Cleaning
frequency
0.1 h to 168.0 h
Cleaning time 2 s to 600 s
Hold time
2 s to 600 s
Timer accuracy
Within 2 min per month
Description of cleaning
operation
z
Operation of the internal timer
z
Operation of the internal timer and external contact input
z
The internal timer is enabled only at the time of external contact
input.
z
One of the cleaning trigger operations is selected (the internal
cleaning sequence starts when external contact input is ON for at
least 2 s).
Contact input
Number of input points
1
Contact type
No-voltage a contact for open collector
Condition
ON resistance: 100
Ω
maximum
Open-circuit voltage: 24 V DC
Short-circuit current: 12 mA DC maximum
Contact capability
Can be selected from cleaning directives and transmission hold.
Communication
capability
Type
RS-485
Signal type
Two-wire input/output insulation type (not insulated from transmission
output)
Calibration
Calibration method
z
Zero calibration: With clean water
z
Span calibration: Concentration conversion method using
coefficient input
z
Working curve selection: (selection of activated sludge and
inorganic mud)
There is a feature that allows you to match an instrument indicated value to a hand analyzed
value of sludge (by the Mass method).
Self-check
Sensor check error
Sensor error
Converter error
CPU abnormality, ADC abnormality, memory abnormality
Operating
temperature range
−
20
°
C to 55
°
C (without freezing)
Operating humidity
range
Relative humidity: 5% to 90% (without due condensation)
Storage
temperature
−
25
°
C to 65
°
C
Power source
Power supply voltage
range
90 V to 264 V AC, 50 Hz/60 Hz
Power consumption
20 V A(max)
Others
With the built-in time lag fuse (250 V,1 A)
A power switch for maintenance is incorporated.
