Endress+Hauser Flowphant T DTT31 - Output Settings for Switch Outputs

Operating options Flowphant T DTT31, DTT35
26 Endress+Hauser
6.2.8 Settings for output - 2 x switch output
Functions of the switch point
• Hysteresis function: The hysteresis function enables
two-point control via a hysteresis. Depending on the
mass flow, the hysteresis can be set via the switch point
SP and switchback point RSP.
• NO contact or NC contact: This switch function can be
selected as required.
• Delay times for switch point SP and switchback point
RSP can be configured in increments of 1 s. This makes
it possible to filter out undesired temperature peaks of
short duration or of high frequency.
t
%
SP
RSP
0
0
1
1
1
2
3
A0005280
 15 SP switch point; RSP switchback point
1 Hysteresis function
2 NO contact
3 NC contact
Function group Function Settings Description
OUT
Output 1
OUT2
Output 2, optional
MODE Switching mode FLOW
TEMP
Output switching mode for channel 2
FLOW: flow rate
TEMP: temperature
Factory setting: FLOW
UNIT Technical unit xC
xF
Temperature unit selection (°C or °F)

Function is only visible if the switching
mode MODE is set to temperature
TEMP in the 2nd output.
Factory setting: °C
FUNC
FNC2
Switching
characteristics
HYNC Hysteresis/NC contact
HYNO Hysteresis/NO contact
→  26
Factory setting: HYNO
SP
SP2
Switch point
value
0,0 Enter value 5 to 100 % in increments of 1 %.
Factory setting: 50 %
or optionally for SP2:
Enter value –15 to +85 °C (–5 to +185 °F) in
increments of 1 °C (1 °F) if the switching mode
MODE is set to temperature TEMP.
Factory setting: 55 °C