Deltabar S
8 Endress+Hauser
Input
Measured variable Differential pressure, from which flow (volume flow or mass flow) and level (level, volume or mass) are derived
Measuring range PMD75, FMD77, FMD78 (with metal process isolating diaphragms)
PMD70, FMD76 (with ceramic process isolating diaphragms)
Nominal
value
Range limit Smallest
calibratable
span
5)
MWP
1
OPL
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 (psi)] [mbar (psi)] [mbar (psi)] [mbar (psi)] [bar (psi)] [bar (psi)] [bar (psi)] [mbar
abs
(psi
abs
)]
10 (0.15)
7)
–10 (-0.15) +10 (+0.15) 0.25 (0.00375)
160 (2400) 160 (2400) 240 (3600)
0.1 (0.0015)
7B –
30 (0.45)
7)
–30 (-0.45) +30 (+0.45) 0.3 (0.0045) 7C –
100 (1.5) –100 (-1.5) +100 (+1.5) 1/5
(0.015/0.075)
8)
160 (2400) /
420 (6300)
9)
160 (2400) /
420 (6300)
240/630
(3600/9450)
7D 8D
500 (7.5) –500 (-7.5) +500 (+7.5) 5 (0.075) 7F 8F
3000 (45) –3000 (-45) +3000 (+45) 30 (0.45) 7H 8H
16000 (240) –16000 (-240) +16000 (+240) 160 (2.4) 7L 8L
40000 (600) –40000 (-600) +40000 (+600) 400 (6) "+" side
10)
:
160 (2400) /
420 (6300)
11)
7M 8M
Nominal
value
Range limit Smallest
calibratable
span
5)
MWP
1)
OPL
2)
Min. operating
pressure
3)
Versions in the
order code
4)
lower (LRL) upper (URL) on one side on both
sides
[mbar (psi)] [mbar (psi)] [mbar (psi)] [mbar (psi)] [bar (psi)] [bar (psi)] [bar (psi)] [mbar
abs
(psi
abs
)]
25 (0.375) –25 (-0.375) +25 (+0.375) 0.25 (0.00375) 10 (150) 10 (150) 15 (225)
1 (0.015)
7B
100 (1.5) –100 (-1.5) +100 (+1.5) 1 (0.015) 16 (240) 16 (240) 24 (360) 7D
500 (7.5) –500 (-7.5) +500 (+7.5) 5 (0.075) 100 (1500) 100 (1500) 150 (2250) 7F
3000 (45) –3000 (-45) +3000 (+45) 30 (0.45) 100 (1500) 100 (1500) 150 (2250) 7H
1) The MWP (maximum working pressure; MWP = PN) for the measuring device depends on the lowest-rated element, with regard to pressure, of the selected
components, i.e. the process connection (o ä 36 ff) has to be taken into consideration in addition to the measuring cell (osee Table above). Also observe
pressure-temperature dependency. For the appropriate standards and further information, see o ä 35, "Pressure specifications" section.
2) OPL: over pressure limit depends on the lowest-rated element, with regard to pressure, of the selected components o ä 35, "Pressure specifications" section.
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: up to 10 mbar
abs
(0.15 psi
abs
).
FMD77 and FMD78: Min. operating pressure: 50 mbar
abs
(0.75 psiabs); observe also the pressure and temperature application limits of the selected filling oil
on o ä 73. For vacuum applications, please observe the installation instructions on o ä 75 ff.
4) Version in the order code o ä 79 ff, feature 40 "Nominal range; PN"
5) Turn down > 100:1 on request
6) Screws o ä 61 ff.
7) PMD75 only
8) Minimum span that can be calibrated for PMD75: 1 mbar (0,015 psi); minimum span that can be calibrated for FMD77 and FMD78: 5 mbar (0.075 psi)
9) For PMD75 devices with CRN-approved process connections, the MWP is
• with the use of O rings: 315 bar (4725 psi)
• with the use of PTFE and CU seals: 120 bar (1800 psi)
10) "–" side: 100 bar (1500 psi)
11) 420 bar (6300 psi) only PMD75
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