Deltabar S
8
Hauser
Input
Measured variable
Differential pressure, from which flow (volume or mass current) and level (level, volume or mass) are derived
Measuring range
PMD75, FMD77, FMD78 (with metallic process isolating diaphragms)
PMD70, FMD76 (with ceramic process isolating diaphragms)
Nominal
value
Measurement
limit
Smallest
calibratable
span
5
MWP
1
Overload
2
Min. operating pressure
3
Versions in the
order code
4
lower
(LRL)
upper
(URL)
on one side
on both sides
PN 160
6
PN 420
6
[mbar]
[mbar]
[mbar]
[mbar]
[bar]
[bar]
[bar]
[mbar
abs
]
10
7
–10
+10
0.25
160
160
240
0.1
7B
–
30
7
–30
+30
0.3
160
160
240
0.1
7C
–
100
–100
+100
1/5
8
160
160
240
0.1
7D
–
500
–500
+500
5
160/420
9
160/420
240/630
0.1
7F
8F
3000
–3000
+3000
30
160/420
9
160/420
240/630
0.1
7H
8H
16000
–16000
+16000
160
160/420
9
160/420
240/630
0.1
7L
8L
40000
–40000
+40000
400
160/420
9
"+"side:
160/420
10
240/630
0.1
7M
8M
Nominal
value
Measurement
limit
Smallest
calibratable
span
5
MWP
1
Overload
2
Min. operating pressure
3
Versions in the
order code
4
lower
(LRL)
upper
(URL)
on one side
on both sides
[mbar]
[mbar]
[mbar]
[mbar]
[bar]
[bar]
[bar]
[mbar
abs
]
25
–25
+25
0.25
10
10
15
1
7B
100
–100
+100
1
16
16
24
1
7D
500
–500
+500
5
100
100
150
1
7F
3000
–3000
+3000
30
100
100
150
1
7H
1)
The MWP (maximum working pressure; MWP = PN) for the measuring device depends on the weakest element of the components selected with regard to
pressure, i.e. the process connection (
30 ff) has to be taken into consideration in addition to the measuring cell (
see table above). Also observe
pressure-temperature dependency. For the appropriate standards and further information, see
29, "Pressure specifications" section.
2)
The maximum pressure for the measuring device is dependent on the lowest-rated element, with regard to pressure, of the selected components.
See also
29, section "Pressure specifications".
3)
The minimum operating pressure indicated in the table applies to silicone oil under reference operating conditions.
Min. operating pressure at 85°C (185°F) for silicone oil: 10 mbar
abs
.
FMD77 and FMD78: Min. operating pressure: 50 mbar
abs
; observe also the pressure and temperature application limits of the selected filling oil on
For vacuum applications, please observe the installation instructions on
4)
Versions in the order code
71 ff, feature 40 "Nominal range; PN"
5)
Turn down > 100:1 on request
6)
PN 160 versions with stainless steel A2 screws, PN 420 versions with stainless steel A4 M12 screws
PN 420 versions for PMD75 only.
7)
PMD75 only
8)
minimum span that can be calibrated for PMD75: 1 mbar; minimum span that can be calibrated for FMD77 and FMD78: 5 mbar
9)
For PMD75 with CRN-approved process connections, the MWP is 315 bar.
10)
"–" side: 100 bar
