Knick Stratos Pro A401B PH, User Manual

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Specifications
Output 2 0/4 ... 20 mA, max. 10 V, floating (galv. connected to output 1)
Process variable * pH, ORP (mV) or temperature
Characteristic Linear
Overrange * 22 mA in the case of error messages
Output filter * PT
1
filter, time constant 0 ... 120 s
Measurement error 1) < 0.25 % of current value + 0.025 mA
Start/end of scale * Configurable within selected range
Minimum span pH 2.00 / 200 mV / 20 K / 36 °F
Alarm contact Relay contact, floating
Contact ratings AC < 250 V / < 3 A / < 750 VA
DC < 30 V / < 3 A / < 90 W
Contact response N/C (fail-safe type)
Response delay 0000 ... 0600 s
Wash contact
Relay contact, floating
For controlling a cleaning system
Contact ratings AC < 250 V / < 3 A / < 750 VA
DC < 30 V / < 3 A / < 90 W
Contact response
*
N/C or N/O
Interval * 000.0 ... 999.9 h (000.0 h = cleaning function switched off)
Cleaning duration * 0000 ... 1999 s
or
Parameter set A/B
For signaling parameter set A/B
Contact ratings
AC < 250 V / < 3 A / < 750 VA
DC < 30 V / < 3 A / < 90 W
Contact response *
Contact open: Parameter set A active
Contact closed: Parameter set B active