Endress+Hauser Prothermo NMT81 - Page 50

Operability Prothermo NMT81
50 Endress+Hauser
7.5.2 Factory reset key
Press and hold the both operating keys simultaneously for twelve seconds. All settings
return to the factory default values.
Display
onoff
8x 53x
II
I
Mode
1
2
A0044585
 46 Factory reset
1 Key I
2 Key II
7.5.3 Unit setting (metric (mm) and Celsius (°C))
The display must be connected to the device. This action automatically sets all values to
metric (mm) unit.
Setting level value (a) to unit Metric (mm) procedure
a
Display
onoff
8x 53x
II
I
Mode
1
2
A0044298
 47 Level setting
a End of probe to zero distance
1 Key I
2 Key II
1. Press and hold the I key [1] for 3 seconds.
 All digits on the display are blinking.
The metric unit (mm) is displayed.
2. Push the I key to increase the value of level or the II key [2] to decrease the value of
level.
 When the value is increased 1 mm, the height of liquid level will move in a
negative direction.
3. Press and hold the key for 2 seconds or more.
 This will start automatic increase or decrease mode.
4. Hold down the key until the desired value is shown.