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Description of hart interface – KROHNE SMARTSENS PH 8320 EN User Manual

Page 40

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DESCRIPTION OF HART INTERFACE

40

SMARTSENS PH 8320

www.krohne.com

11/2013 - 4002543902 - MA SMARTSENS PH 8320 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 10:42 AM