DIFFERENTIAL PRESSURE GAUGES
Selection guide
 
parameter
differential pressure gauge type
PBD
PCD
PDD
PMD
PSD
POD
operating principle
2x bourdon tube
capsule
1x diaphragm
1x diaphragm
2x bellows
2x diaphragm
Span range min.
0.6 bar
25 mbar case 100

6 mbar case 160
0.6 bar
250 mbar

25 mbar for type low
100 mbar
1 bar

100 mbar for type low
max.
16 bar
400 mbar
16 bar
25 bar
6 bar
25 bar
static pressure max.
2.5 ... 4 x range
1.5 bar case 100mm

1 bar case 160mm
20 bar
100 bar

25 bar for type low
10 x range
100 bar

optional 250 bar
overload safe max.
no
no

optional max. 2 bar
4 x range

2.4 …20 bar
no

no
upto static press.

upto static press.
100 bar

optional 250 bar
case diameter mm.
100; 160
100; 160
100; 160
100; 160
100; 160
contact device  
yes
no
no
yes
no
yes
min.
1.6 bar
1.6 bar
100 mbar for type low
1.6 bar
chemical seals
yes, wide range
no
yes
yes
no
yes
wetted parts
AISI316L/1.4435

AISI316Ti/1.4571

fully welded system
for clean air and dry
gasses only

stainless steel

nickel coated brass;
macrolon
AISI316L/1.4435

diaphragm duratherm

Viton; PTFE
AISI316L/1.4435

diaphragm duratherm

Viton; PTFE
AISI316L/1.4435



fully welded system
AISI316L/1.4435

diaphragm duratherm

Viton; PTFE
catalogue page
36-1
36-2
36-3
36-4
36-5
36-6
operating principle