Version
EN 837-1
Nominal size in mm
40, 50, 63
Accuracy class
2.5
Scale ranges
0 … 1.6 to 0 … 400 bar
or all other equivalent vacuum or combined pressure and
vacuum ranges
Pressure limitation
Steady: 3/4 x full scale value
Fluctuating: 2/3 x full scale value
Short time: Full scale value
Permissible temperature
Ambient: -20 … +60 °C
Medium: +60 °C maximum
Temperature effect
When the temperature of the measuring system deviates
from the reference temperature (+20 °C): max. ±0.4 %/10 K
of the span
Process connection
Copper alloy,
Lower mount (radial) or centre back mount,
NS 40: Centre back mount, G ⅛ B (male), SW 14
NS 50, 63: G ¼ B (male), SW 14
Pressure element
Copper alloy
Movement
Copper alloy
Dial
Plastic, white, black lettering, with pointer stop pin
Pointer
Plastic, black
Case
Plastic, black
Window
Plastic, crystal-clear (PMMA), welded with case
Filling liquid
Glycerine
Ingress protection
IP65 per EN/lEC 60529
 Panel mounting flange (only for NS 63 and back mount)

Mounting clamp (only for back mount)
Customer-specific version