Endress+Hauser Deltabar S FMD 77 Manual

Deltabar S PMD 70/75, FMD 76/77/78
Technical Information
Differential pressure with ceramic and polysilicon sensors for flow,
level and differential measurement
High accuracy with excellent long-term stability
HART®, Foundation Fieldbus or PROFIBUS-PA protocols
Applications
Deltabar S pressure transmitters are suitable for:
• Flow measurement (volumetric or mass flow) in
conjunction with primary elements in gas, steam
and liquid applications.
• Level, volume or mass measurement in liquids.
• Differential pressure monitoring, e.g. across filters or
pumps.
• Corrosive or abrasive applications using unique
ceramic sensor technology (PMD 70). For example,
DP measurement across a filter with abrasive
product.
• High temperatures up to 662°F (350°C) with
remote diaphragm seals (FMD 78).
Your benefits
Top of the line technical specifications:
• High long-term stability (0.05% of URL/year)
• High accuracy: up to ±0.075% span (< 15 : 1
turndown), with optional Platinum version (±0.05%
span)
• Turn down 100 : 1 standard, higher on request
Designed with safety in mind to keep your plant,
equipment and personnel safe:
• SIL-2 certificate optional
• Function-monitoring of the measuring cell by the
electronics provides alert upon sensor failure
• Secondary seals standard in every transmitter
• Built-in diagnostic software functionality (e.g.,
user-defined max/min operating window)
• Optional FM and CSA certificates, plus
combination certificates
Modular design for easy repair:
• Replaceable display
• Universal electronics for pressure and
differential pressure
Easy to setup with menu-driven interface, quick setup
menu for standard application modes:
• Pressure
• Level
• Flow
HistoROM/M-DAT memory module enables:
• Quick duplication of measuring points
• Process monitoring via periodic recording of
pressure and temperature values
• Monitoring of events and configuration changes
• Analysis and graphical evaluation of data by ToF tool
software
Flexible commissioning via multiple modes:
• On-board push buttons (external, or inside housing)
• HART® handheld operation
• ToF tool (PC software, free of charge with each
transmitter) plus HART modem
• PROFIBUS-PA or Foundation Fieldbus configuration
software
TI 382P/24/ae/04.04
PMD70 PMD75 FMD76 FMD77 FMD78

Deltabar S
2Endress+Hauser
Table of contents
Function and system design. . . . . . . . . . . . . . . . . . . . . . 4
Device selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Overview of diaphragm seal FMD 78 . . . . . . . . . . . . . . . . . . . . . . 5
Measuring principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Flow measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Level measurement (level, volume and mass) . . . . . . . . . . . . . . . . 8
Communication protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Human interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Display module (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Operating elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
HistoROM®/M-DAT (optional) . . . . . . . . . . . . . . . . . . . . . . . . . 10
Local operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Handheld terminals – HART . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
ToF Tool – HART, PROFIBUS PA . . . . . . . . . . . . . . . . . . . . . . . . 11
Commuwin II – HART, PROFIBUS PA . . . . . . . . . . . . . . . . . . . . 11
Remote operation – Foundation Fieldbus . . . . . . . . . . . . . . . . . . 11
Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Measured variable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Measuring range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Explanation of terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Output signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Signal on alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Load – 4 to 20 mA HART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Reading cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Cable entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Cable specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Residual ripple . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Influence of power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Performance characteristics – general . . . . . . . . . . . . . 17
Reference operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Long-term stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Influence of the installation position . . . . . . . . . . . . . . . . . . . . . . 17
Vibration effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Performance characteristics –
metallic diaphragms . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Reference accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Total performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Warm-up period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Dynamic response time (T63) . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Influence of the operating pressure
on zero point and span . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Thermal change of the
zero output and the output span . . . . . . . . . . . . . . . . . . . . . . . . . 19
Performance characteristics –
ceramic diaphragms . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Reference accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Total performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Warm-up period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Dynamic response time (T63) . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Influence of the operating pressure
on zero point and span . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Thermal change of the
zero output and the output span . . . . . . . . . . . . . . . . . . . . . . . . . 20
Operating conditions (installation) . . . . . . . . . . . . . . . . 21
General installation instructions . . . . . . . . . . . . . . . . . . . . . . . . . 21
Measuring arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Wall- and pipe-mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Rotating the housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Oxygen applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Ultra pure gas applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Diaphragms for materials with hydrogen build-up
(Rhodium-Gold coating) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Operating conditions (Environment) . . . . . . . . . . . . . . 23
Ambient temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Degree of protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Climate class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Vibration resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Electromagnetic compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Overvoltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Operating conditions (Process) . . . . . . . . . . . . . . . . . . 24
Process temperature limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Temperature operating range, seals . . . . . . . . . . . . . . . . . . . . . . 24
Pressure specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Mechanical construction . . . . . . . . . . . . . . . . . . . . . . . 26
Housing dimensions, optional display on the side (T14) . . . . . . . 26
Housing dimensions, optional display on the top (T15) . . . . . . . . 26
Process connections PMD 70 . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Process connections PMD 75 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Process connection FMD 76 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Process connections FMD 77, low-pressure side . . . . . . . . . . . . . 33
Process connections FMD 77, high-pressure side . . . . . . . . . . . . 34
Process connection FMD 78 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Planning instructions, diaphragm seal systems . . . . . . . 45
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Design and operation mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Diaphragm seal filling oils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Influence of the temperature
on the zero point for diaphragm seal systems . . . . . . . . . . . . . . . 47
Ambient temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Response time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Installation instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

3Endress+Hauser
Deltabar S
Certificates and approvals . . . . . . . . . . . . . . . . . . . . . . 52
CE mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Hazardous area approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Pressure Equipment Directive (PED) . . . . . . . . . . . . . . . . . . . . . 52
Overspill protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Standards and guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . 53
PMD 70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
PMD 75 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
FMD 76 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
FMD 77 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
FMD 78 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Further documentation . . . . . . . . . . . . . . . . . . . . . . . . 67
Technical Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Installation/Control Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Overspill protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Deltabar S
4Endress+Hauser
Function and system design
Device selection
Deltabar S –
product family
PMD 70
P01-PMD70xxx-16-xx-xx-xx-000
With ceramic
measuring diaphragms
PMD 75
P01-PMD75xxx-16-xx-xx-xx-000
With metallic
measuring diaphragms
FMD 76
P01-FMD76xxx-16-xx-xx-xx-000
With ceramic
measuring diaphragms
FMD 77
P01-FMD77xxx-16-xx-xx-xx-000
With metallic
measuring diaphragms
and diaphragm seal
mounted on one side
FMD 78
P01-FMD78xxx-16-xx-xx-xx-003
With metallic
measuring diaphragms
and capillary diaphragm
seals
Field of application – Flow
– Level
– Differential pressure
–Flow
– Level
– Differential pressure
– Level – Level – Level
– Differential pressure
Process connections – 1/4 "– 18 NPT
–RC1/4
– 1/4" – 18 NPT
–RC1/4
Low-pressure side (–):
– 1/4" – 18 NPT
–RC1/4
High-pressure side (+):
– DN 80 – DN 100
–ANSI3"–4"
– JIS 80A – 100A
Low-pressure side (–):
– 1/4" – 18 NPT
–RC1/4
High-pressure side (+):
– DN 50 – DN 100
– ANSI 2" – 4"
– JIS 80A – 100A
–Widerangeof
diaphragm seals,
→see page 5, section
"Overview of
diaphragm seal
FMD 78"
Measuring ranges from -10 to +10 inH2O
(-25 to +25 mbar)
to -45 to +45 psi
(to -3 to +3 bar)
from -0.4 to +0.4 inH2O
(-10 to +10 mbar)
to -600 to +600 psi
(-40 to +40 bar)
from -40 to +40 inH2O
(-100 to +100 mbar)
to to -45 to +45 psi
(-3 to +3 bar)
from -40 to +40 inH2O
(-100 to +100 mbar)
to -230 to +230 psi
(-16 bar to +16 bar)
from - -40 to +40 inH2O
(-100 to +100 mbar)
to -600 to +600 psi
(-40 to +40 bar)
Overload 1on one side: 1450 psi
(100 bar)
on both sides: 2175 psi
(150 bar)
on one side:
max. 6100 psi
(max. 420 bar)
on one side:
max. 1450 psi
(max. 100 bar)
on one side:
max. 2320 psi
(max. 160 bar)
on one side:
max. 2320 psi
(max. 160 bar)
Process temperature –40 to +185°F
(–40 to +85°C)
–40 to +248°F
(–40 to +120°C)
–40 to +185°F
(–40 to +85°C)
up to +662°F (+ 350°C) up to +662°F (+350°C)
Ambient temperature –40 to +185°F
(–40 to +85°C)
–40 to +185°F
(–40 to +85°C) 2
–40 to +185°F
(–40 to +85°C )
–40 to +185°F
(–40 to +85°C) 2
–40 to +185°F
(–40 to +85°C) 2
Reference Accuracy – Up to ±0.075% of the set span
– PLATINUM version: up to ±0.05% of the set span
– Up to ±0.075 % of the set span + influence from
the diaphragm seal
Supply voltage – For non-hazardous areas: 10.5 to 45 V DC
– Intrinsically safe (EEx ia): 10.5 to 30 V DC
Output 4 to 20 mA with superimposed HART protocol, PROFIBUS-PA or Foundation Fieldbus
Options – High-pressure version up to pstat 10,000 psi (700 bar)
– PMD 75, FMD 77, FMD 78: Rhodium-Gold-coated diaphragm, NACE-compliant materials
Specialities
(options)
– Metal-free
measurement with
PVDF flange
–p
stat up to 6100 psi
(420 bar)
– Diaphragm: tantalum
– Abrasion-resistant and
corrosion-resistant
– No diaphragm-seal
temperature effects
– Metal-free
measurement possible
with ECTFE-coated
process connection
–Forhighmedia
temperatures
–Widerangeof
diaphragm seals
1) dependent on the lowest-rated element, with regard to pressure, of the selected components
2) lower temperature on request
+ –
+
+
–
–

Deltabar S
Endress+Hauser 5
Overview of diaphragm seal
FMD 78
Design Diaphr. seal Connection Version Standard Nominal diameter Nom. press./Class
Cell Membrane
diaphragm seal
(MDM)
ANSI cell
P01-FMD78xxx-04-xx-xx-xx-000
ANSI B 16.5 – 2"
–3"
–4"
150 to 2500 lb
DIN cell DIN 2501 – DN 50
–DN80
–DN100
PN 16 to 400
Threaded
connection with
separator
Membrane
diaphragm seal
(MDM)
NPT
P01-FMD78xxx-03-xx-xx-xx-011
ANSI 1/2" NPT (inside) 600 psi
G
P01-FMD78xxx-03-xx-xx-xx-010
ISO 228 G 1/2 B PN 40
Tri-Clamp Membrane
diaphragm seal
(MDM)
Clamp
P01-FMD78xxx-03-xx-xx-xx-005
ISO 2852 – DN 25 – DN 38
(1 to 1-1/2")
–DN40–DN51
(2")
– DN 70 – DN 76.1
(3")
Dependent on the
clamp used
Pipe diaphragm
seal (RDM)
Clamp
P01-FMD78xxx-03-xx-xx-xx-009
ISO 2852 – DN 25 (1")
–DN38(1-1/2")
–DN51(2")
Dependent on the
clamp used
Hygienic
connections
Membrane
diaphragm seal
(MDM)
Varivent
P01-FMD78xxx-03-xx-xx-xx-007
Type N for pipes
DN 40 – DN 162
PN 40
DRD
P01-FMD78xxx-03-xx-xx-xx-006
d = 65 mm 25 bar
Sanitary tank spud
with 2" extended
diaphragm seal
P01-FMD78xxx-03-xx-xx-xx-008
d = 100 mm Dependent on the
clamp used
Taper adapter with
coupling nut
P01-FMD78xxx-03-xx-xx-xx-003
DIN 11851 – DN 50
–DN65
–DN80
PN 25
Threaded adapter
P01-FMD78xxx-03-xx-xx-xx-004
DIN 11851 – DN 50
–DN65
–DN80
PN 25
Flange Membrane
diaphragm seal
(MDM)
ANSI flange
P01-FMD78xxx-03-xx-xx-xx-001
ANSI B 16.5 – 2"
–3"
–4"
150 lb and 300 lb
EN/DIN flange EN 1092-1/
DIN 2527
–DN50
–DN80
–DN100
Up to 40 bar
Flange with
extended
diaphragm seal
Membrane
diaphragm seal
(MDM)
ANSI flange
P01-FMD78xxx-03-xx-xx-xx-002
ANSI B 16.5 – 3" with 2"/4"/6"/
8" extended
diaphragm seal
– 4" with 2"/4"/6"/
8" ext. diaphr. seal
150 lb

Deltabar S
6Endress+Hauser
Measuring principle
Ceramic measuring diaphragms used for PMD 70 and FMD 76
The ceramic measuring cell is based on the principle of a plate capacitor with an electrode on (1) and a movable
electrode on the interior of the diaphragm (3). Standard silicone oil or mineral oil filling oils for this measuring
cell.
A differential pressure (p1 ≠p2) causes a corresponding deflection of both diaphragms. Both capacitance values
are converted and are fed to the microprocessor of the transmitter as a digital signal.
Advantages:
•Self-monitoring for diaphragm break or oil loss (constant comparison of the measured temperature with a
temperature calculated from the capacitance values)
•Extremely high resistance to aggressive media
•Suitable for vacuums up to 0.02 psiabs (1 mbarabs)
•Metal-free versions available
•Secondary process barrier for enhanced mechanical integrity
Metallic measuring diaphragms used for PMD 75, FMD 77 and FMD 78
The separating diaphragms (3/9) are deflected on both sides by the acting pressures. A filling oil (4/8) transfers
the pressure to a resistance circuit bridge (semi-conductor technology). The change due to differential pressure
of the bridge output voltage is measured and further processed.
Advantages:
•Standard operating pressures: 2320 psi and 6100 psi (160 bar and 420 bar)
•High long-term stability
•Very high single-sided overload resistance
•Secondary process barrier for enhanced mechanical integrity
Ceramic measuring diaphragms used for PMD 70
and FMD 76
Metallic measuring diaphragms used for PMD 75, FMD 77 and FMD 78
P01-xMD7xxxx-03-xx-xx-xx-000
Ceramic measuring cell PMD 70 and FMD 76
1 Meter body
2Diaphragm
3 Electrodes
4 Glass frit fixes the diaphragm onto the meter
body
5 Temperature sensor
P01-xMD7xxxx-03-xx-xx-xx-002
Metal measuring cell 4 inH2O (10 mbar) and
12 inH2O (30 mbar)
1 Sensing element
2 Silicon diaphragm
3 Separating diaphragm
4 Filling oil
5 Integrated overload protection
P01-xMD7xxxx-03-xx-xx-xx-003
Metal measuring cell for 40 inH2O (100 mbar) and
above
6 Sensing element
7 Overload diaphragm/Middle diaphragm
8 Filling oil
9 Separating diaphragm
1
p2
p
1
2
3
4
5
1
p2 p
1
2
3
4
5
1
p
2
p
6
7
8
9

Deltabar S
Endress+Hauser 7
Flow measurement Design and operation mode
P01-PMD7xxxx-15-xx-xx-xx-000
Flow measurement with Deltabar S and primary element, left: Orifice plate and right: Pitot tube
QFlow
∆ p Differential pressure, ∆ p = p1– p2
Your benefits
•Choice of four flow modes of operation: volume flow, norm volume flow (European norm conditions),
standard volume flow (American standard conditions) and mass flow.
•Choice of flow units with automatic unit conversion.
•User-specified custom measuring units.
•Low flow cut off: when activated, this function suppresses small flows which can lead to large fluctuations
in the measured value.
•Contains two totalizers as standard. One totalizer is user-resettable.
•The totalizing mode and unit can be individually set for each totalizer. This allows independent daily and
annual quantity totalizing.
Q
Q
p
1
p
1
p
2
p
2
Q~
Q~ Dp
Dp
++ ––

Deltabar S
8Endress+Hauser
Level measurement (level,
volume and mass)
Design and operation mode
P01xMD7xxxx-15-xx-xx-xx-000
Level measurement with Deltabar S
1 Level measurement via impulse piping and PMD 70
2 Level measurement with FMD 76
3 Level measurement via capillaries and FMD 78
h Height (level)
∆ p Differential pressure
ρ Density of the medium
g Gravitation constant
Your benefits
•Choice of three level operating modes
•Volume and mass measurements in any tank shape by means of a freely programmable characteristic curve
•Choice of level units with automatic unit conversion
•User-specified custom measuring units
•Has a wide range of uses, e.g.
– for level measurement in tanks with static pressure
– in the event of foam formation
– in tanks with agitators of screen fittings
– in the event of liquid gases
–for standard level measurement
Communication protocol •4 to 20 mA with HART communication protocol
•PROFIBUS-PA
– The Endress+Hauser Deltabar S devices meet the requirements as per the FISCO model.
– Due to the low current consumption of 12 mA
– up to 9 Deltabar S for EEx ia, CSA IS and FM IS applications
– up to 32 Deltabar S for all other applications, e.g. in non-hazardous areas, EEx nA, etc.
can be operated at one bus segment with installation as per FISCO.
Further information on PROFIBUS-PA, such as requirements for bus system components, can be found in
the Operating Instructions BA 198F "PROFIBUS-DP/-PA: Guidelines for planning and commissioning" and
in the PNO guideline.
•Foundation Fieldbus
– The Endress+Hauser Deltabar S devices meet the requirements as per the FISCO model.
– Due to the low current consumption of 12 mA
– up to 9 Deltabar S for EEx ia, CSA IS and FM IS applications
– up to 32 Deltabar S for all other applications, e.g. in non-hazardous areas, EEx nA, etc.
can be operated on one bus segment with installation as per FISCO.
Further information on Foundation Fieldbus, such as requirements for bus system components, can be found
in the Operating Instructions BA 013S "Foundation Fieldbus Overview".
h= Dp
rg
+
+
––
h
1
2
3

Deltabar S
Endress+Hauser 9
Human interface
Display module (optional) A 4-line liquid crystal display (LCD) is used for display and operation. The display module shows measured
values, dialog text as well as fault and notice messages in plain text, thereby supporting the user in every stage
of operation.
Functions:
•8-digit measured value display including sign and decimal point, bargraph for current display
•Simple and complete menu guidance due to separation of the parameters into three levels (blocks, groups
and functions)
•Each parameter is given a 3-digit ID number for easy navigation.
•Option for configuring the display according to individual requirements and desires, such as language,
alternating display, display of other measured values such as sensor temperature, contrast setting
•Comprehensive diagnostic functions (fault and warning message, peak-hold indicators, etc.)
•4 to 20 mA HART: rapid and safe commissioning with the Quick Setup menus
P01-xMD7xxxx-07-xx-xx-xx-000
Operating elements The operating buttons are located either under the protective cap on the exterior of the device or inside on the
electronic insert, depending on configuration of transmitter.
Operating buttons on the exterior of the device
P01-xxxxxxxx-19-xx-xx-xx-038
Measured value display
Editing modes
Function name Value
Identification
number
Header line
Main line
Information
line
Symbol
Bargraph
Unit
Selection
option
Edit value
Current measured value

Deltabar S
10 Endress+Hauser
The operating buttons located externally on the device work on the Hall sensor principle. This guarantees the
following advantages:
•Complete protection against environmental influences such as moisture and contamination
•Simple operation without any tools
•No wear
Note!
With the "External push buttons" option, a display module is always purchased. →See also page 53 ff, feature
20 "Electronics, communication, display, operation".
Operating keys and elements located internally on the electronic insert
HistoROM®/M-DAT
(optional)
HistoROM®/M-DAT is a memory module, which is attached to the electronic insert. The HistoROM®/M-DAT
can be retrofitted into an existing transmitter.
Your benefits
•Quick and safe commissioning of the same measuring points by copying the configuration data of one
transmitter to another transmitter
•Reliable process monitoring due to cyclical recording of pressure and sensor temperature measured values
•Simple diagnosis by recording events such as alarms, maximum indicators, counters for measuring
excursions outside user-specified pressure and temperature limits
•Analysis and graphic evaluation of the events and process parameters via ToF Tool (contained in scope of
supply)
HistoROM®/M-DAT can be ordered via feature 100 "Additional options 1" or feature 110 "Additional options
2". →See also page 53 ff.
P01-xxxxxxxx-19-xx-xx-xx-074
Electronic insert HART
1 Operating keys
2 Green LED to indicate acceptance of value
3 Slot for optional display
4 Slot for optional HistoROM®/
M-DAT
5 DIP-switch for locking/unlocking measured-
value parameters
6 DIP-switch for damping on/off
P01-xxxxxxxx-19-xx-xx-xx-075
Electronic insert PROFIBUS PA
1 Green LED to indicate acceptance of value
2 Key for position calibration
3 Slot for optional display
4 Slot for optional HistoROM®/
M-DAT
5 DIP-switch for hardware address
6 DIP-switch without function
7 DIP-switch for locking/unlocking measured-
value parameters
P01-xxxxxxxx-19-xx-xx-xx-054
Electronic insert Foundation Fieldbus
1 Green LED to indicate acceptance of value
2 Key for position calibration
3 Slot for optional display
4 Slot for optional HistoROM®/
M-DAT
5 DIP-switch for simulation mode
6 DIP-switch for locking/unlocking measured-
value parameters
t
Display
Damping
off on
[]
Sensor
Histo ROM
21
PC
onoff
12
3
4
5
6
on on
off off
12
345678SW
HW
Address
0%
Zero
Histo ROM
Sensor
Display
21
PC
21
CKON
34 5 67 8
SDA08
01
123
on
off
12
4
5
76
on
off
HW
0%
Zero
Histo ROM
Sensor
Display
21
PC
01
F OUNDATION
Simulation
12
Simulation
on
off
123
4
56

Deltabar S
Endress+Hauser 11
Local operation Functions 4 to 20 mA HART
•With display module: navigate through the operating menu using three operating buttons
•Without display module:
– Position calibration (zero point correction)
– Setting lower-range value and upper-range value – reference pressure present at device
– Value acceptance indicated by green LED
•Device reset
•Locking and unlocking measured-value parameters
•Switching damping on and off
Functions PROFIBUS-PA
•Position calibration (zero point correction)
•Value acceptance indicated by green LED
•Locking and unlocking measured-value parameters
•Setting hardware address
Functions Foundation Fieldbus
•Position calibration (zero point correction)
•Value acceptance indicated by green LED
•Locking and unlocking measured-value parameters
•Switching simulation mode on and off
Handheld terminals – HART With a handheld terminal, all the parameters can be configured anywhere along the 4 to 20 mA line via menu
operation.
ToF Tool –
HART, PROFIBUS PA
The ToF Tool is a graphic and menu-guided operating program for measuring devices from
Endress+Hauser. It is used for supporting the commissioning, data storage, signal analysis and documentation
of the devices. The following operating systems are supported: Win95, Win98, WinNT4.0, Win2000 and
Windows XP. You can set all parameters via the ToF Tool.
The ToF Tool supports the following functions:
•Configuration of transmitters in online operation
•Loading and saving device data (upload/download)
•HistoROM®/M-DAT analysis
•Documentation of the measuring point
Connection options:
•HART via Commubox FXA 191 and the serial interface RS 232 C of a computer
•PROFIBUS-PA via segment coupler and PROFIBUS interface card
•Service interface with adapter FXA 193
Commuwin II –
HART, PROFIBUS-PA
Commuwin II is a graphically supported operating program for intelligent measuring devices with the
communication protocols HART and PROFIBUS-PA. The following operating systems are supported: Win 3.1/
3.11, Win 95, Win 98, WinNT4.0 and Win2000. Commuwin II displays the most important parameters.
Commuwin II supports the following functions:
•Configuration of measuring devices in online operation via matrix operation
•Loading and saving device data (upload/download)
•Visualization of measured and limit values
•Presentation and recording of measured values with a line recorder.
Connection option:
•HART via Commubox FXA 191 and the serial interface RS 232 C of a computer
•PROFIBUS PA via segment coupler and PROFIBUS interface card
Remote operation –
Foundation Fieldbus
An FF configuration program is required to integrate a device with "Foundation Fieldbus signal" into an FF
network or to set the FF-specific parameters. Please contact your local Endress+Hauser Sales for more
information.

Deltabar S
12 Endress+Hauser
Input
Measured variable Differential pressure, from which flow (volume or mass current) and level (level, volume or mass) are derived
Measuring range PMD 75, FMD 77, FMD 78 (with metallic measuring diaphragms)
Nominal
value
Measurement limit Span MWP 1Overload 2min.
operating
pressure 3
Versions in the order
code 4
lower (LRL) upper
(URL)
recom-
mended
min./max.
minimum 5on one side on both
sides
2320 psi
(PN 160) 6
6100 psi
(PN 420)
6
psi [mbar] psi [mbar] psi [mbar] psi [mbar] psi [mbar] psi [bar] psi [bar] psi [bar] psi [mbarabs]
4 inH2O
(10)
-4 inH2O
(-10)
+4 inH2O
(+10)
4 inH2O (10) 0.1 inH2O
(0.25)
2320
(160) 7
2320
(160) 7
3480
(240) 7
0.001 (0.1) 7B –
12 inH2O
(30)
-12 inH2O
(-30)
+12 inH2O
(+30)
12 inH2O (30) 0.12 inH2O
(0.3)
2320
(160) 7
2320
(160) 7
3480
(240) 7
0.001 (0.1) 7C –
40 inH2O
(100)
-40 inH2O
(-100)
+40 inH2O
(+100)
10/40 inH2O
(25/100)
0.4 inH2O (1) 2320 (160) 2320 (160) 3480 (240) 0.001 (0.1) 7D –
200 inH2O
(500)
-200 inH2O
(-500)
+200 inH2O
(+500)
13/200 inH2O
(33/500)
2 inH2O (5) 2320/6100
(160/420)
2320/6100
(160/420)
3480/9140
(240/630)
0.001 (0.1) 7F 8F
43 (3000) -43
(-3000)
43 (+3000) 3/43
(200/3000)
0.4 (30) 2320/6100
(160/420)
2320/6100
(160/420)
3480/9140
(240/630)
0.001 (0.1) 7H 8H
232
(16,000)
-232
(-16,000)
+232
(+16,000)
15/232
1066/16,000
2 (160) 2320/6100
(160/420)
2320/6100
(160/420)
3480/9140
(240/630)
0.001 (0.1) 7L 8L
580
(40,000)
-580
(-40,000)
+580
(+40,000)
38/580
(2666/40,000)
6 (400) 2320/6100
(160/420)
"+"side:
2320/6100
(160/420) 8
3480/9140
(240/630)
0.001 (0.1) 7M 8M
1) MWP = Maximum working pressure. →See also page 26, section "Pressure specifications".
2) FMD 77, FMD 78: The maximum pressure for the measuring device is dependent on the lowest-rated element, with regard to pressure, of the
selected components. →See also page 26, section "Pressure specifications".
3) The specified minimum operating pressure applies to the PMD 75 at the reference operating conditions for silicone oil. Min. operating
pressure at 185°F (85°C) for silicone oil: 0.145 psiabs (10 mbarabs). The pressure and temperature application limits of the selected filling oil
must also be observed for the FMD 77 and FMD 78. →See also page 46, section "Diaphragm seal filling oils".
4) Versions in the order code →See also page 53 ff, feature 40 "Measuring cell, nominal operating range, PN"
5) Minimum span that can be calibrated, turn down > 100:1 on request
6) 2320 psi (PN 160) versions with stainless steel M12 bolts, 6100 psi (PN 420) versions with steel M12 bolts, surface coating GEOMET
7) With copper seal: "MWP": max. 1450 psi (100 bar); "Overload on one side" and "Overload on both sides": max. 2175 psi (150 bar)
8) "–"side: 1450 psi (100 bar)

Deltabar S
Endress+Hauser 13
PMD 70, FMD 76 (with ceramic measuring diaphragms)
Explanation of terms
Nominal
value
Measurement limit Span MWP 1 Overload 2 Min.
operating
pressure 3
Versions in the
order code 4
lower (LRL) upper (URL) recom-
mended
min./max.
minimum 5on one side on both
sides
inH2O
[mbar]
inH2O [mbar] inH2O
[mbar]
inH2O [mbar] inH2O [mbar] psi [bar] psi [bar] psi [bar] psi [mbarabs]
10 (25) -10 (25) +10 (+25) 10 (25) 0.1 (0.25) 145 (10) 145 (10) 217 (15) 14 (1) 7B
40 (100) -40 (-100) +40 (+100) 10/40 (25/100) 0.4 (1) 232 (16) 232 (16) 348 (24) 14 (1) 7D
200 (500) -200 (-500) +200 (+500) 13/200 (33/500) 2 (5) 1450 (100) 1450 (100) 2175 (150) 14 (1) 7F
1200 (3000) -1200 (-3000) +1200
(+3000)
80/1200
(200/3000)
12 (30) 1450 (100) 1450 (100) 2175 (150) 14 (1) 7H
1) MWP = Maximum working pressure. →See also page 26, section "Pressure specifications".
2) The specified overload only applies to the measuring cell. The maximum pressure for the measuring device is dependent on the weakest element,
with regard to pressure, of the selected components. →See also page 26, section "Pressure specifications".
3) Min. operating pressure at the reference operating conditions for silicone oil. Min. operating pressure at 185°F (85°C): to 0.145 psiabs (10 mbar abs)
4) Versions in the order code →See also page 53 ff, feature 40 "Measuring cell, nominal operating range, PN"
5) Minimum span that can be calibrated, turn down > 100:1 on request
P01-xxxxxxxx-05-xx-xx-xx-001
Example: 200 inH2O (500 mbar) sensor
1Setspan
2Nominalvalue
i Upper range limit (URL)
3 Nominal measuring range
LRL Lower range limit
URL Upper range limit
LRV Lower range value
URV Upper range value
Explanation of the term 'Turn down (TD)'
(TD = turn down)
Turn down = nominal value/set span
Example:
Nominal value = 200 inH2O (500 mbar)
Set span = 40 inH2O (100 mbar)
TD = 5:1
–500 mbar
(-200 inH O)
2
+ 500 mbar
(+200 inH O)
2
0
1
2
3
100
(40 inH O)
2
LRL LRV URL
URV

Deltabar S
14 Endress+Hauser
Output
Output signal •4 to 20 mA with superimposed digital communication protocol HART, 2-wire
•Digital communication signal PROFIBUS-PA (Profile 3.0)
•Digital communication signal Foundation Fieldbus
Signal on alarm •4 to 20 mA HART
Options:
– Max. alarm*: can be set from 21 to 23 mA
– Keep measured value: last measured value is kept
– Min. alarm: 3.6 mA
* Factory setting: 22 mA
•PROFIBUS-PA: can be set in the Analog Input block, options: good, bad, uncertain
•Foundation Fieldbus: can be set, options: good, bad, uncertain
Load – 4 to 20 mA HART
P01-xMD7xxxx-05-xx-xx-xx-000
Load diagram, observe the position of the jumper and the explosion protection (→See also page 16, section "Measuring 4
to 20 mA test signal".)
1 Jumper for 4 to 20 mA test signal inserted in "Standard" position
2 Jumper for 4 to 20 mA test signal inserted in "Test" position
3 Supply voltage 10.5 (11.5) to 30 V DC for EEx ia, 1/2 D, 1 GD, 1/2 GD, FM IS and CSA IS
4 Supply voltage 10.5 (11.5) to 45 V DC for device for non-hazardous areas, 1/3 D, EEx d, EEx nA, FM XP, FM DIP,
FM NI, CSA XP and CSA Dust-Ex
RLmax Maximum load resistance
U Supply voltage
Note!
When operating via a handheld terminal or via PC with an operating program, a minimum communication
resistance of 250 Ωmust exist within the loop.
Resolution •Current output: 1 µA
•Display: can be set (setting at the factory: presentation of the maximum accuracy of the transmitter)
Reading cycle •HART commands: on average 3 to 4 per second
•PROFIBUS-PA:
– cyclic: on average 100/s
– acyclic: on average 20/s
•Foundation Fieldbus:
– cyclic up to 5/s, dependent on the number and type of function blocks used in a closed-control loop
–acyclic: 10/s
U – 10.5 V
RLmax 23 mA
£
30
20
10.5 U
[V]
40 45
1282
1500
847
413
[]W
RLmax
30
20
11.5 U
[V]
40 45
1239
1456
804
369
[]W
RLmax
TestTest
U – 11.5 V
RLmax 23 mA
£
2
3
3
4
4
1

Deltabar S
Endress+Hauser 15
Damping •Via display module, handheld terminal or PC with operating program, continuous from 0...999 s
•Additionally for HART: via DIP-switch on the electronic insert, switch position "On = set value" and "Off"
•Factory setting: 2 s
Power supply
Electrical connection Note!
•When using the measuring device in hazardous areas, installation must comply with the corresponding
national standards and regulations and the Safety Instructions (XAs) or Installation or Control Drawings
(ZDs). →See also page 67, section "Safety Instructions" and "Installation/Control Drawings".
•Protective circuits against reverse polarity, HF influences and overvoltage peaks are installed.
4 to 20 mA HART
P01-xMx7xxxx-04-xx-xx-xx-001
Electrical connection 4 to 20 mA HART
1Housing
2 Jumper for 4 to 20 mA test signal.
→See also page 16, section "Measuring 4 to 20 mA" .
3 Internal ground terminal
4 External ground terminal
5 4 to 20 mA test signal between positive and test terminal
6 Minimum supply voltage = 10.5 V DC, jumper is inserted in accordance with the illustration.
7 Minimum supply voltage = 11.5 V DC, jumper is inserted in "Test" position.
PROFIBUS PA
The two-wire cable must be connected to the "PA+" and "PA–" terminals.
Foundation Fieldbus
The two-wire cable must be connected to the "FF+" and "FF–" terminals.
4 to 20mA
Test
4to20mA
10.5 V DC
11.5 V DC
4... 20mA Test
Test
Test
1
2
3
4
5
6
7

Deltabar S
16 Endress+Hauser
Measuring 4 to 20 mA test signal
A 4 to 20 mA signal may be measured via the positive and test terminal without interrupting the measurement.
The minimum supply voltage of the device can be reduced by simply changing the position of the jumper. As
a result, operation is also possible with lower voltage sources. Observe the position of the jumper in accordance
with the following table.
Supply voltage Note!
•When using the measuring device in hazardous areas, installation must comply with the corresponding
national standards and regulations and the Safety Instructions (XAs) or Installation or Control Drawings
(ZDs).
•All explosion protection data are given in separate documentation which is available upon request. The Ex
documentation is supplied as standard with all devices approved for use in explosion hazardous areas. →See
also page 67, sections "Safety Instructions" and "Installation/Control drawing".
4 to 20 mA HART
•Version for non-hazardous areas, jumper for 4 to 20 mA test signal in "Standard" position: 10.5 to 45 V DC
•Version for non-hazardous areas, jumper for 4 to 20 mA test signal in "Test" position:
11.5 to 45 V DC
PROFIBUS-PA
Version for non-hazardous areas: 9 to 32 V DC
Foundation Fieldbus
Version for non-hazardous areas: 9 to 32 V DC
Current consumption •PROFIBUS-PA: 11 mA ± 1 mA, switch-on current corresponds to table 4, IEC 61158-2
•Foundation Fieldbus: 11 mA ± 1 mA, switch-on current corresponds to table 4, IEC 61158-2
Cable entry → See also page 53 ff , feature 30 "Housing, Cable entry, Protection".
Cable specification •Endress+Hauser recommends using shielded, twisted-pair two-wire cables.
•Terminals for wire cross-sections 0.5 to 2.5 mm2
•Cable external diameter: 5 to 10 mm
Residual ripple Without influence on 4 to 20 mA signal up to ± 5 % residual ripple within the permitted voltage range
[according to HART hardware specification HCF_SPEC-54 (DIN IEC 60381-1)]
Influence of power supply ≤ 0.0006% of URL/1 V
Jumper position for test signal Description
–Measuring 4 to 20 mA test signal via plus and test terminal:
not possible.
– Delivery status
–minimum supply voltage: 10.5 V DC
–Measuring 4 to 20 mA test signal via plus and test terminal:
possible. (Thus, the output current can be measured without
interruption via the diode.)
–minimum supply voltage: 11.5 V DC
Test
Test

Deltabar S
Endress+Hauser 17
Performance characteristics – general
Reference operating conditions •As per IEC 60770
•Ambient temperature TU= constant, in the range of: +69.8 to +91.4°F (+21 to +33°C)
•Humidity ϕ= constant, in the range of: 45 to 75 % r.H
•Ambient pressure pU= constant, in the range of: 12 to 15 psi (860 to 1060 mbar)
•Position of the measuring cell: constant, in the range of: ±1°
•Input of LOW SENSOR TRIM and HIGH SENSOR TRIM for lower range value and upper range value
•Zero based span
•Membrane material PMD 75, FMD 77, FMD 78: AISI 316L
•Membrane material PMD 70, FMD 76: Al2O3 (Aluminum oxide ceramic)
•Filling oil: silicone oil
Long-term stability Measuring cells ≥200 inH2O (500 mbar):
•±0.05% of URL/year
•±0.125% of URL/5 years
Measuring cells ≤40 inH2O (100 mbar):
•±0.18% of URL/year
Influence of the installation
position
Position-dependent zero shift can be corrected. →See also page 21, section "General installation instructions"
and page 50 ff, section "Installation instructions, Diaphragm seal systems".
Vibration effects PMD 70, PMD 75: ≤Reference accuracy to 15 to 25 Hz: 1.6 mm; 25 to 1000 Hz: 4g
Performance characteristics – metallic diaphragms
Reference accuracy –
PMD 75, FMD 77, FMD 78
The reference accuracy comprises the non-linearity including hysteresis and non-reproducibility in accordance
with the limit point method as per IEC 60770.
PMD 75
4 inH2O (10 mbar), 12 inH2O (30 mbar) measuring cells:
•TD 1:1: ±0.15% of URV
•TD > 1:1: ±0.15% of URV x TD
40 in H2O (100 mbar) measuring cell:
•TD 1:1 to TD 4:1: ±0.075% [±0.05%] of URV
•TD > 4:1: ±(0.012 • TD + 0.027)% of URV
Measuring cells ≥200 inH2O (500 mbar):
•TD 1:1 to TD 15:1: ±0.075% [±0.05%] of URV
•TD > 15:1: ±(0.0015 • TD + 0.05252)% of URV
FMD 77, FMD 78
40 in H2O (100 mbar) measuring cell:
•TD 1:1 to TD 4:1: ±0.075% of URV + influence from the diaphragm seal
•TD > 4:1: ±(0.012 • TD + 0.027)% of URV + influence from the diaphragm seal
Measuring cells ≥200 inH2O (500 mbar):
•TD 1:1 bis TD 15:1: ±0.075% of URV + influence from the diaphragm seal
•TD > 15:1: ±(0.0015 • TD + 0.05252)% of URV + influence from the diaphragm seal
–Values in brackets [ ] for devices with improved reference accuracy (PLATINUM version)
–The following applies for the root-extracting characteristic curve:
The accuracy data of the Deltabar S is taken into the accuracy calculation of the flow rate with a factor of 0.5.

Deltabar S
18 Endress+Hauser
Total performance –
PMD 75
The "Total performance" specification comprises the non-linearity including hysteresis, non-reproducibility, the
thermal change of the zero point as well as the influence of the line pressure (pst = 1015 psi / 70 bar).
•±0.15% of URV 1, 2
Warm-up period –
PMD 75, FMD 77, FMD 78
5.4 s
Dynamic response time (T63) –
PMD 75, FMD 77, FMD 78
P01-xxxxxxxx-05-xx-xx-xx-007
Dynamic response time
Influence of the operating
pressure on zero point and span
– PMD 75, FMD 77, FMD 78
Note!
The influence of the operating pressure on the zero point can be calibrated out.
1. For measuring ranges ≥200 inH2O (500 mbar) to TD 2:1
2. All specifications apply to the temperature range +14 to +140°F (–10 to +60°C).
I
63 %
100 %
t
t1t2
Type Dead time t1Time constant (T63), t2
PMD 75 45 ms •12 inH2O (30 mbar) measuring cell: 200 ms
•40 inH2O (100 mbar) measuring cell: 60 ms
•200 inH2O (500 mbar) measuring cell: 45 ms
•43 psi (3 bar) measuring cell: 40 ms
FMD 77, FMD 78 dependent on the diaphragm seal
Measuring cell 4 inH2O (10 mbar) 12 inH2O (30 mbar) 40 inH2O (100 mbar) 200 inH2O (500 mbar)
Influence of the
operating pressure
on the zero point
±0.15% of URL/
100 psi (7 bar)
±0.35% of URL/
1015 psi (70 bar)
±0.15% of URL/
1015 psi (70 bar)
±0.075% of URL/
1015 psi (70 bar)
Influence of the
operating pressure
on the span
±0.035% of URL/
100 psi (7 bar)
±0.14% of URL/
1015 psi (70 bar)
±0.14% of URL/
1015 psi (70 bar)
±0.14% of URL/
1015 psi (70 bar)
Measuring cell 45 psi (3 bar) 230 psi (16 bar) 600 psi (40 bar)
Influence of the
operating pressure on
the zero point
±0.075% of URL/
1015 psi (70 bar)
±0.075% of URL/
1015 psi (70 bar)
±0.075% of URL/
1015 psi (70 bar)
Influence of the
operating pressure on
the span
±0.14% of URL/
1015 psi (70 bar)
±0.14% of URL/
1015 psi (70 bar)
±0.14% of URL/
1015 psi (70 bar)

Deltabar S
Endress+Hauser 19
Thermal change of the zero
output and the output span –
PMD 75
+14 to +140°F (–10 to +60°C):
•4, 12 inH2O (10 mbar, 30 mbar) measuring cell: ±(0.31 • TD + 0.06)% of URV
•40 inH2O (100 mbar) measuring cell: ±(0.18 • TD + 0.02)% of URV
•200 inH2O, 45 psi (500 mbar, 3 bar) measuring cell: ±(0.08 • TD + 0.05)% of URV
•230 psi (16 bar) measuring cell: ±(0.1 • TD + 0.1)% of URV
•600 psi (40 bar) measuring cell: ±(0.025 • TD + 0.05)% of URV
–40 to +14°F, +140 to +185°F (–40 to –10°C, +60 to +85°C):
•4, 12 inH2O (10 mbar, 30 mbar) measuring cell: ±(0.45 • TD + 0.1)% of URV
•40 inH2O (100 mbar) measuring cell: ±(0.3 • TD + 0.15)% of URV
•200 inH2O, 45 psi (500 mbar, 3 bar) measuring cell: ±(0.12 • TD + 0.1)% of URV
•230 psi (16 bar) measuring cell: ±(0.15 • TD + 0.2)% of URV
•600 psi (40 bar) measuring cell: ±(0.37 • TD + 0.1)% of URV
Performance characteristics – ceramic diaphragms
Reference accuracy –
PMD 70, FMD 76
The reference accuracy comprises the non-linearity including hysteresis and non-reproducibility in accordance
with the limit point method as per IEC 60770.
10 inH2O (25 mbar) measuring cell:
•TD 1:1: ±0.15% of URV
•TD > 1:1: ±0.15% of URV x TD
40 inH2O (100 mbar) measuring cell:
•TD 1:1 to TD 4:1: ±0.075% [±0.05%] of URV
•TD > 4:1: ±(0.012 • TD + 0.027)% of URV
200 inH2O, 43 psi (500 mbar, 3 bar) measuring cell:
•TD 1:1 to TD 15:1: ±0.075% [±0.05%] of URV
•TD > 15:1: ±(0.0015 • TD + 0.05252)% of URV
Total performance –
PMD 70, FMD 76
The "Total performance" specification comprises the non-linearity including hysteresis, non-reproducibility, the
thermal change of the zero point as well as the influence of the line pressure (pst = 1015 psi / 70 bar).
•±0.15% of URV 1, 2
Warm-up period –
PMD 70, FMD 76
5.4 s
–Values in brackets [ ] for devices with improved reference accuracy (PLATINUM version)
–The following applies for the root-extracting characteristic curve:
The accuracy data of the Deltabar S is taken into the accuracy calculation of the flow rate with a factor of 0.5.
1. For measuring ranges ≥200 inH2O (500 mbar), TD 1:1
2. All specifications apply to the temperature range +14 to +140°F (–10 to +60°C).

Deltabar S
20 Endress+Hauser
Dynamic response time (T63) –
PMD 70, FMD 76
P01-xxxxxxxx-05-xx-xx-xx-007
Dynamic response time
Influence of the operating
pressure on zero point and span
– PMD 70, FMD 76
Note!
The influence of the operating pressure on the zero point can be calibrated out.
Thermal change of the zero
output and the output span –
PMD 70, FMD 76
+14 to +140°F (–10 to +60°C):
•10 inH2O (25 mbar) measuring cell: ±(0.35 • TD + 0.05)% of URV
•≥40 inH2O (100 mbar) measuring cells: ±(0.05 • TD + 0.05)% of URV
–40 to +14°F, +140 to +185°F (–40 to –10°C, +60 to +85°C):
•10 inH2O (25 mbar) measuring cell: ±(0.3 • TD + 0.15)% of URV
•≥40 inH2O (100 mbar) measuring cells: ±(0.08 • TD + 0.07)% of URV
I
63 %
100 %
t
t1t2
Type Dead time t1Time constant (T63), t2
PMD 70, FMD 76 90 ms •10 inH2O (25 mbar) measuring cell: 4700 ms
•40 inH2O (100 mbar) measuring cell: 280 ms
•200 inH2O (500 mbar) measuring cell: 210 ms
Measuring cell 10 inH2O (25 mbar) 40 inH2O (100 mbar) 200 inH2O (500 mbar) 45 psi (3 bar)
Influence of the
operating pressure
on the zero point
±0.7% of URL/
100 psi (7 bar)
±0.175% of URL/
100 psi (7 bar)
±0.075% of URL/
1015 psi (70 bar)
±0.075% of URL/
1015 psi (70 bar)
Influence of the
operating pressure
on the span
±0.14% of URL/
1015 psi (70 bar)
±0.14% of URL/
1015 psi (70 bar)
±0.14% of URL/
1015 psi (70 bar)
±0.14% of URL/
1015 psi (70 bar)