Endress+Hauser Flowphant T DTT31 Flowphant T DTT35 Operating Instructions Manual page 23

Flowphant T DTT31, DTT35
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.
Function group Function
OUT MODE
Output 1
OUT2
Output 2, optional
UNIT
FUNC
FNC2
SP
SP2
Endress+Hauser
SP
RSP
 15
1
2
3
Settings
Switching mode FLOW
TEMP
Technical unit xC
xF
Switching HYNC
characteristics
HYNO
Switch point 0.0
value
%
1
1
0
1
0
SP switch point; RSP switchback point
Hysteresis function
NO contact
NC contact
Description
Output switching mode for channel 2
FLOW: flow rate
TEMP: temperature
Factory setting: FLOW
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
Hysteresis/NC contact
Hysteresis/NO contact
→  23
Factory setting: HYNO
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
Operation options
t
2
3
A0005280
23