User guide

7 DESCRIPTION OF HART INTERFACE
40
SMARTSENS PH 8570
www.krohne.com 11/2013 - 4002544902 - MA SMARTSENS PH 8570 R02 en
4 Setup
1 Process input Temperature Set temperature unit °C / °F
Set temperature offset
Display date of offset calibration
Set temperature compensation
(automatic/manual); Default setting: automatic
Set temperature value 5...50°C/41...122°F (only if
manual temperature compensation is activated;
Default setting: 25°C/77°F )
Calibration Start calibration procedure. For more information
refer to Calibration on page 17
Maintenance interval Set maintenance interval in days (000...999 days);
Default setting: 000
Reset maintenance
interval
Yes / No; Default setting: No
2 I/O Meas. value at 4 mA Set measuring value at 4 mA;
Default setting: pH 0
Meas. value at 20 mA Set measuring value at 20 mA;
Default setting: pH 14
Time constant Set time constant (1…60 seconds);
Default setting: 1 second
3 I/O HART TAG Set TAG for measuring loop
Set long TAG
Display of previous long TAG
Message Display messages (32 packed ASCII)
Polling address Display polling address
Loop current mode Select between enable or disable to activate or
deactivate the loop current mode
Device variables PV Display PV - pH with
min. and max. limits
SV Display SV - electrode
voltage in mV
TV Display TV -
temperature in °C / °F
with min. and max.
limits
QV Display QV - resistance
.book Page 40 Monday, November 18, 2013 4:44 PM