Endress+Hauser PMD75 Specifications
TI00382P/00/EN/28.17
71374973
Products
Solutions Services
Technical Information
Deltabar S
PMD75, FMD77, FMD78
Differential pressure measurement and pressure
measurement
Differential pressure transmitter with metal
sensors
Applications
The device is used for the following measuring tasks:
• Flow measurement (volume flow or mass flow) in conjunction with differential
pressure sensors in gases, vapors and liquids
• Level, volume or mass measurements in liquids
• High process temperatures up to 400 °C (752 °F) possible with diaphragm seal
mount
• Differential pressure monitoring, e.g. of filters and pumps
Your benefits
• Very good reproducibility and long-term stability
• High reference accuracy up to 0.035 %
• Turn down up to 100:1, higher on request
• Used for flow and differential pressure monitoring up to SIL3, certified to IEC
61508 by TÜV SÜD
• High level of safety during operation thanks to function monitoring from the
measuring cell to the electronics
• The patented TempC membrane for the diaphragm seal reduces measured errors
caused by environmental and process temperature influences to a minimum
• Easy electronic replacement guaranteed with HistoROM®/M-DAT
• Uniform platform for differential pressure, hydrostatics and pressure (Deltabar S –
Deltapilot S – Cerabar S)
• Practical user navigation for quick and easy commissioning
• Extensive diagnostic functions
• Cost-effective installation with Deltabar S FMD77, capillary on low-pressure side
Table of contents
Deltabar S PMD75, FMD77, FMD78
Document information ....................... 4
Document function ............................ 4
Symbols used ................................ 4
Documentation ............................... 5
Terms and abbreviations ........................ 6
Turn down calculation .......................... 7
Registered trademarks .......................... 7
Function and system design ................... 8
Device selection .............................. 8
Measuring principle ........................... 10
Product design .............................. 10
Communication protocol ........................ 11
Input .................................... 12
Measured variable ............................ 12
Measuring range ............................. 12
Output .................................. 14
Output Signal ............................... 14
Signal range ................................ 14
Signal on alarm .............................. 14
Load ..................................... 14
Dead time, time constant ....................... 15
Dynamic behavior, current output .................. 16
Dynamic behavior Digital output (HART electronics) ..... 16
Dynamic behavior PROFIBUS PA .................. 17
Dynamic behavior FOUNDATION Fieldbus ............ 17
Damping .................................. 18
Alarm current ............................... 18
Firmware version ............................ 18
HART protocol-specific data ..................... 18
PROFIBUS PA protocol-specific data ................ 19
FOUNDATION Fieldbus protocol-specific data .......... 19
Power supply ............................. 23
Terminal assignment .......................... 23
Supply voltage .............................. 24
Current consumption .......................... 24
Electrical connection .......................... 24
Terminals ................................. 24
Cable entries ............................... 25
Device plug ................................. 25
Cable specification ............................ 26
Start-up current ............................. 26
Residual ripple .............................. 26
Overvoltage protection (optionally for HART, PROFIBUS
PA and FOUNDATION Fieldbus) ................... 26
Influence of power supply ....................... 26
Performance characteristics of differential
pressure / pressure transmitter
(sensor module + electronics module) .......... 27
Preamble .................................. 27
Total performance of transmitter .................. 27
Reference accuracy [E1] ........................ 27
Total performance – Specification values ............. 28
Long-term stability ........................... 29
Detailed Performance Explanation and Calculation ...... 30
Total error ................................. 32
Performance characteristics - calculation
example and additional information ........... 33
Calculating the total performance in 5 steps ........... 33
Installation factors ............................ 36
Reference operating conditions ................... 37
Installation ............................... 38
General installation instructions ................... 38
Measuring arrangement ........................ 38
Measuring arrangement for devices with diaphragm seals
– FMD77 and FMD78 ......................... 38
Orientation ................................ 38
Wall and pipe mounting, transmitter (optional) ........ 39
Wall and pipe mounting, valve manifold (optional) ...... 39
"Separate housing" version ....................... 40
Turning the housing .......................... 41
Oxygen applications ........................... 42
Ultrapure gas applications ....................... 42
Applications with hydrogen ...................... 42
Environment .............................. 43
Ambient temperature range ..................... 43
Storage temperature range ...................... 43
Degree of protection .......................... 43
Climate class ............................... 43
Electromagnetic compatibility .................... 43
Vibration resistance ........................... 44
Process .................................. 45
Process temperature limits (temperature at transmitter) .. 45
Process temperature limits of capillary armoring: FMD77
and FMD78 ................................ 46
Process temperature range, seals .................. 46
Pressure specifications ......................... 47
Mechanical construction .................... 48
Device height ............................... 48
T14 housing, optional display on the side ............ 49
T15 housing, optional display on the top ............. 50
T17 housing (hygienic), optional display on the side ..... 50
Process connections PMD75 ..................... 51
Process connections PMD75 ..................... 52
Process connections PMD75 ..................... 53
Valve manifold DA63M- (optional) ................. 54
FMD77: Selecting the process connection and capillary
line ...................................... 55
FMD77 - Overview ........................... 56
Process connections FMD77 with diaphragm seal, high-
pressure side ............................... 57
Process connections FMD77 with diaphragm seal, high-
pressure side ............................... 58
Process connections FMD77 with diaphragm seal ....... 59
Process connections FMD77 with diaphragm seal ....... 61
2 Endress+Hauser
Deltabar S PMD75, FMD77, FMD78
Process connections FMD77 with diaphragm seal ....... 63
Process connections FMD77 with diaphragm seal, low-
pressure side ............................... 63
FMD78: Selecting the process connection and capillary
line ...................................... 64
FMD78 basic device ........................... 65
Process connections FMD78 with diaphragm seal ....... 66
Process connections FMD78 with diaphragm seal ....... 67
Process connections FMD78 with diaphragm seal ....... 69
Process connections FMD78 with diaphragm seal ....... 71
Process connections FMD78 with diaphragm seal ....... 72
Process connections FMD78 with diaphragm seal ....... 74
Process connections FMD78 with diaphragm seal ....... 75
Process connections FMD78 with diaphragm seal ....... 76
Separate housing: Wall and pipe mounting with mounting
bracket ................................... 78
Materials not in contact with process ............... 79
Weight ................................... 83
Materials in contact with process .................. 83
Fill fluid ................................... 85
Operability ............................... 88
Operating concept ............................ 88
Local operation .............................. 88
Remote operation ............................ 91
HistoROM®/M-DAT (optional) ................... 92
System integration ........................... 93
Configuration data sheet ....................... 109
Accessories .............................. 112
HistoROM®/M-DAT .......................... 112
Welding flanges and welding neck ................ 112
Manifolds ................................ 112
Additional mechanical accessories ................ 112
Supplementary documentation .............. 113
Field of Activities ............................ 113
Technical Information ........................ 113
Special Documentation ........................ 113
Operating Instructions ........................ 113
Brief Operating Instructions ..................... 113
Functional safety manual (SIL) ................... 113
Overfill protection ........................... 113
Safety Instructions (XA) ....................... 113
Installation/Control Drawings ................... 114
Planning instructions, diaphragm seal systems ... 94
Applications ................................ 94
Design and operation mode ...................... 95
Differential pressure transmitter .................. 96
Diaphragm seal filling oils ....................... 97
Operating temperature range .................... 97
Response time .............................. 98
Information on cleaning ........................ 98
Installation instructions ........................ 98
Vacuum applications ......................... 102
Certificates and approvals .................. 103
CE mark .................................. 103
RCM-Tick marking ........................... 103
Ex approvals ............................... 103
EAC conformity ............................. 103
Suitable for hygiene applications ................. 103
Functional safety SIL/ IEC 61508 Declaration of
Conformity (optional) ......................... 104
Overfill protection ........................... 104
CRN approval .............................. 104
Other standards and guidelines .................. 104
Pressure Equipment Directive 2014/68/EU (PED) ...... 104
Manufacturer declarations ..................... 105
Marine approval ............................ 106
Classification of process sealing between electrical
systems and (flammable or combustible) process fluids in
accordance with ANSI/ISA 12.27.01 ............... 106
Inspection certificate ......................... 106
Calibration ................................ 107
Service .................................. 107
Ordering information ...................... 108
Scope of delivery ............................ 108
Measuring point (TAG) ........................ 108
Endress+Hauser 3
Document information
DANGER
WARNING
CAUTION
NOTICE
A
Deltabar S PMD75, FMD77, FMD78
Document function
The document contains all the technical data on the device and provides an overview of the
accessories and other products that can be ordered for the device.
Symbols used Safety symbols
Symbol Meaning
Electrical symbols
Symbol Meaning Symbol Meaning
DANGER!
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in
serious or fatal injury.
WARNING!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
serious or fatal injury.
CAUTION!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
minor or medium injury.
NOTE!
This symbol contains information on procedures and other facts which do not result in
personal injury.
Protective ground connection
A terminal which must be connected
to ground prior to establishing any
other connections.
Ground connection
A grounded terminal which, as far as
the operator is concerned, is
grounded via a grounding system.
Symbols for certain types of information
Symbol Meaning
Permitted
Procedures, processes or actions that are permitted.
Preferred
Procedures, processes or actions that are preferred.
Forbidden
Procedures, processes or actions that are forbidden.
Tip
Indicates additional information.
Reference to documentation
Reference to page
Reference to graphic
Visual inspection
4 Endress+Hauser
Deltabar S PMD75, FMD77, FMD78
,…,
1.
2.
3.
Symbols in graphics
A-A, B-B, C-C, ... Sections
Symbol Meaning
1, 2, 3 ... Item numbers
Series of steps
A, B, C, ... Views
Documentation
See chapter "Additional documentation" → 113
The document types listed are available:
In the Download Area of the Endress+Hauser Internet site: www.endress.com → Download
Safety Instructions (XA)
See the "Safety instructions" section → 113
Endress+Hauser 5
Terms and abbreviations
URL OPLMWP
LRL
0
p
LRV
URV
1
2
3
4
Deltabar S PMD75, FMD77, FMD78
A0029505
Item Term/abbreviation Explanation
1 OPL The OPL (over pressure limit = sensor overload limit) for the measuring device depends on the lowest-rated element,
with regard to pressure, of the selected components, i.e. the process connection has to be taken into consideration in
addition to the measuring cell. Also observe pressure-temperature dependency. For the relevant standards and
additional information, see the "Pressure specifications"→ 47 section.
The OPL may only be applied for a limited period of time.
2 MWP The MWP (maximum working pressure) for the sensors depends on the lowest-rated element, with regard to
pressure, of the selected components, i.e. the process connection has to be taken into consideration in addition to the
measuring cell. Also observe pressure-temperature dependency. For the relevant standards and additional
information, see the "Pressure specifications"→ 47 section.
The MWP may be applied at the device for an unlimited period.
The MWP can also be found on the nameplate.
3 Maximum sensor
measuring range
4 Calibrated/adjusted
span
p - Pressure
- LRL Lower range limit
- URL Upper range limit
- LRV Lower range value
- URV Upper range value
- TD (turn down) Turn down
Span between LRL and URL
This sensor measuring range is equivalent to the maximum calibratable/adjustable span.
Span between LRV and URV
Factory setting: 0 to URL
Other calibrated spans can be ordered as customized spans.
Example - see the following section.
6 Endress+Hauser
Deltabar S PMD75, FMD77, FMD78
LRV
URLURV
LRL
1 = 2
3
Turn down calculation
1 Calibrated/adjusted span
2 Zero point-based span
3 URL sensor
Example
• Sensor:10 bar (150 psi)
• Upper range value (URL) = 10 bar (150 psi)
Turn down (TD):
A0029545
• Calibrated/adjusted span: 0 to 5 bar (0 to 75 psi)
• Lower range value (LRV) = 0 bar (0 psi)
• Upper range value (URV) = 5 bar (75 psi)
TD =
TD =
In this example, the TD is 2:1.
This span is based on the zero point.
Registered trademarks HART®
Registered trademark of the FieldComm Group, Austin, USA
PROFIBUS®
Registered trademark of the PROFIBUS User Organization, Karlsruhe, Germany
FOUNDATIONTMFieldbus
Registered trademark of the FieldComm Group, Austin, Texas, USA
URL
|URV - LRV|
10 bar (150 psi)
= 2
|5 bar (75 psi) - 0 bar (0 psi)|
Endress+Hauser 7
Device selection
+ –
Deltabar S PMD75, FMD77, FMD78
Function and system design
A0023922
PMD75
A0023923
FMD77 with mounted diaphragm seal
FMD78 with capillary diaphragm seals
Field of application
PMD75:
• Flow
• Level
• Differential pressure
• Pressure
FMD77:
• Level
• Differential pressure
FMD78:
• Level
• Differential pressure
Process connections
PMD75:
• 1/4 – 18 NPT
• RC 1/4
FMD77 low-pressure side (–):
• 1/4 – 18 NPT
• RC 1/4
• Alternatively available with capillary and diaphragm seal
FMD77 high-pressure side (+):
• DN 50 – DN 100
• ASME NPS 2" – 4"
• JIS 80A – 100A
FMD78:
Wide range of diaphragm seals
A0023924
8 Endress+Hauser
Deltabar S PMD75, FMD77, FMD78
Measuring ranges
• PMD75: from –10 to +10 mbar (-0.15 to +0.15 psi) to –40 to +40 bar (-600 to +600 psi)
As gauge or absolute pressure sensor: up to 250 bar (3750 psi)
• FMD77: from –100 to +100 mbar (-1.5 to +1.5 psi) to –16 bar to +16 bar (-240 to +240 psi)
• FMD78: from –100 to +100 mbar (-1.5 to +1.5 psi) to –40 to +40 bar (-600 to +600 psi)
OPL
PMD75:
on one side: up to 420 bar (6 300 psi)
on both sides: up to 630 bar (9 450 psi)
As gauge or absolute pressure sensor: up to 375 bar (5625 psi)
FMD77:
on one side: up to 160 bar (2 400 psi)
on both sides: up to 240 bar (3 600 psi)
FMD78:
on one side: up to 160 bar (2 400 psi)
on both sides: up to 240 bar (3 600 psi)
Process temperature range(temperature at process connection)
PMD75:
–40 to +85 °C (–40 to +185 °F)
FMD77:
–70 to +400 °C (–94 to +752 °F)
(depending on the filling oil)
FMD78:
–70 to +400 °C (–94 to +752 °F)
(depending on the filling oil)
Ambient temperature range
• Without LCD display: –50 to +85 °C (–58 to +185 °F)
• With LCD display: –20 to +70 °C (–4 to +158 °F)
(extended temperature application range–50 to +85 °C (–58 to +185 °F) with limitations in optical
properties, such as display speed and contrast)
• Separate housing –20 to +60 °C (–4 to +140 °F):
• Diaphragm seal systems depending on the version
Reference accuracy
• PMD75: up to ±0.035 % of the set span
• FMD77: up to ±0.075 % of the set span
• FMD78: up to ±0.075 % of the set span
Supply voltage
Supply voltage non-Ex
• 4 to 20 mA HART: 10.5 to 45 V DC
• PROFIBUS PA and FOUNDATION Fieldbus: 9 to 32 V DC
Supply voltage Ex ia
10.5 to 30 V DC
Output
4 to 20 mA with superimposed HART protocol, PROFIBUS PA or FOUNDATION Fieldbus
Options
• HistoROM®/M-DAT memory chip
• PMD75: with blind flange on LP side for gauge and absolute pressure measurement
Specialties
PMD75:
• p
up to 420 bar (6 300 psi)
stat
• Process isolating diaphragm: tantalum
Endress+Hauser 9
FMD77:
p
2
p
1
1
2
3
44
h =
∆
p
ρ g
+
–
–
h
A
B
For extreme medium temperatures
FMD78:
Wide range of diaphragm seals
Measuring principle Metal process isolating diaphragm
1 Measuring element
2 Middle diaphragm
3 Filling oil
4 Process isolating diaphragm
The process isolating diaphragms are deflected on both sides by the acting pressures. A filling oil
transfers the pressure to a resistance bridge (semiconductor technology). The change in the bridge
output voltage, which depends on the differential pressure, is measured and processed
Advantages:
• Standard system pressures: 160 bar (2 400 psi) up to 420 bar (6 300 psi)
• High long-term stability
• Very high single-sided overload resistance
Deltabar S PMD75, FMD77, FMD78
A0023919
Product design Level measurement (level, volume and mass):
A Level measurement with FMD77
B Level measurement with FMD78
h Height (level)
Δp Differential pressure
ρ Density of the medium
g Gravitational constant
A0023921
10 Endress+Hauser
Deltabar S PMD75, FMD77, FMD78
Q Q
Q ~ Q ~
∆ ∆p p
+ +
– –
p
1
p
1
p
2
p
2
A B
Your benefits
• Selection of the level operating mode which is optimum for your application in the device software
• Volume and mass measurements in any container shapes by means of a freely programmable
characteristic curve
• Choice of diverse level units with automatic unit conversion
• A customized unit can be specified.
• Has a wide range of uses, e.g.
– for level measurement in vessels with pressure overlay
– in the event of foam formation
– in containers with agitators or screen fittings
– in the event of liquid gases
– for standard level measurement
Flow measurement
Flow measurement with Deltabar S and primary device:
Communication protocol
A Orifice plate
B Pitot tube
Q Flow
Δp Differential pressure, Δp = p1 – p
2
Your benefits
• Choice of four flow modes of operation: volume flow, corrected volume flow (European norm
conditions), standard volume flow (American standard conditions) and mass flow
• Choice of diverse flow units with automatic unit conversion
• A customized unit can be specified.
• 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 can be reset to zero.
• The totalizing mode and unit can be individually set for each totalizer. This allows independent
daily and annual quantity totalizing.
• 4 to 20 mA with HART communication protocol
• PROFIBUS PA
– The Endress+Hauser devices meet the requirements of the FISCO model.
– Due to a low current consumption of 13 mA ± 1 mA, the following number of devices can be
operated on one bus segment if installing as per FISCO: up to 7 devices for Ex ia, CSA IS and FM
IS applications or up to 27 devices for all other applications e.g. in non-hazardous areas, Ex nA
etc. Further information on PROFIBUS PA can be found in Operating Instructions BA00034S
"PROFIBUS DP/PA: Guidelines for planning and commissioning" and in the PNO Guideline.
• FOUNDATION Fieldbus
– The Endress+Hauser devices meet the requirements of the FISCO model.
– Due to a low current consumption of 15.5 mA ± 1 mA, the following number of devices can be
operated on one bus segment if installing as per FISCO: up to 6 devices for Ex ia, CSA IS and FM
IS applications or up to 24 devices for all other applications e.g. in non-hazardous areas, Ex nA
etc. Further information on FOUNDATION Fieldbus, such as requirements for bus system
components, can be found in Operating Instructions BA00013S "FOUNDATION Fieldbus
Overview".
A0023920
Endress+Hauser 11
Input
Measured variable Measured process variables
Differential pressure, pressure
Calculated process variables
• Flow rate (volume flow or mass flow)
• Absolute pressure, gauge pressure
• Level (level, volume or mass)
Measuring range
Deltabar S PMD75, FMD77, FMD78
Sensor Maximum sensor measuring
range
lower (LRL) upper (URL) on one side on both
[mbar (psi)] [mbar (psi)] [mbar (psi)] [mbar (psi)] [bar (psi)] [bar (psi)] [bar (psi)] [mbar
Smallest calibratable
1)
span
MWP OPL remains stable
for a minimum of
sides
operating
pressure
abs
2)
(psi
abs
Option
PN 160
)]
FMD77, FMD78, PMD75: Option PN 160 / 16 MPa / 2400 psi
10 (0.15)
–10 (-0.15) +10 (+0.15) 0.25 (0.00375) 160 (2400) 160 (2400) 240 (3600)
7B
(PMD75 only)
30 (0.45)
–30 (-0.45) +30 (+0.45) 0.3 (0.0045) 7C
(PMD75 only)
100 (1.5) –100 (-1.5) +100 (+1.5) 1/5
(0.015/0.075)
4)
160 (2400)
500 (7.5) –500 (-7.5) +500 (+7.5) 5 (0.075) 7F
5)
7D
0.1 (0.0015)
3000 (45) –3000 (-45) +3000 (+45) 30 (0.45) 7H
16000 (240) –16000
(-240)
40000 (600) –40000
(-600)
+16000
(+240)
+40000
(+600)
160 (2.4) 7L
400 (6) "+" side
6)
:
7M
160 (2400)
PMD75: Option PN 420 / 42 MPa / 6300 psi
100 (1.5) –100 (-1.5) +100 (+1.5) 1/5
(0.015/0.075)
4)
420 (6300)
5)
420 (6300) 630 (9450)
8D
500 (7.5) –500 (-7.5) +500 (+7.5) 5 (0.075) 8F
3000 (45) –3000 (-45) +3000 (+45) 30 (0.45) 8H
16000 (240) –16000
(-240)
40000 (600) –40000
(-600)
+16000
(+240)
+40000
(+600)
160 (2.4) 8L
400 (6) "+" side
6)
:
420 (6300)
0.1 (0.0015)
8M
3)
1) Turn down > 100:1 on request
2) 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
(0.15 psi
abs
). FMD77 and FMD78: Min. operating pressure: 50 mbar
abs
(0.75 psi
abs
; observe also
abs)
the pressure and temperature application limits of the selected filling oil → 97. For vacuum applications, follow the installation
instructions→ 102.
3) Product Configurator, order code for "Nominal range; PN"
4) Smallest calibratable span for the PMD75: 1 mbar (0.015 psi); Smallest calibratable span for the FMD77 and FMD78: 5 mbar (0.075 psi)
5) All PMD75 process connections are CRN-approved. If O-rings are used, the MWP is 315 bar (4 725 psi); if PTFE and CU seals are used, the MWP
is 120 bar (1 800 psi).
6) "–" side: 100 bar (1 500 psi)
12 Endress+Hauser
Deltabar S PMD75, FMD77, FMD78
Sensor Maximum sensor measuring
range
lower (LRL) upper (URL) on one side on both
Smallest
calibratable span
MWP OPL remains stable for a
minimum of
operating pressure
Option
1)
sides
bar (psi) bar (psi) bar (psi) bar (psi) bar (psi) bar (psi) mbar
abs
(psi
abs
)
PMD75: optionally available as a gauge or absolute pressure sensor
160 (2400) rel -1 (-15) 160 (2400) 40 (600) 160 (2400) 240 (3600) -
160 (2400) abs 0 160 (2400) 4 (60) 160 (2400) 240 (3600) -
250 (3750) rel -1 (-15) 250 (3750) 40 (600) 250 (3750) 375 (5625) -
250 (3750) abs 0 250 (3750) 4 (60) 250 (3750) 375 (5625) -
3)
3)
3)
3)
10 7Q
10 7V
10 7R
10 7W
1) 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
(0.15 psi
abs
abs
).
2) Product Configurator, order code for "Nominal range; PN"
3) Available only with blind flange on LP side.
2)
Endress+Hauser 13
Output
on on
off off
damp.
damp.
Display Display
Sensor Sensor
HART HART
R R
FIELD COMMUNICATION PROTOCOL FIELD COMMUNICATION PROTOCOL
SW /min
SW /min
E
+
–
E
+
–
Deltabar S PMD75, FMD77, FMD78
Output Signal
• 4 to 20 mA with superimposed digital communication protocol HART, 2-wire
• Digital communication signal PROFIBUS PA (Profile 3.0), 2-wire
– Signal coding: Manchester Bus Powered (MBP): Manchester II
– Transmission rate: 31.25 KBit/s voltage mode
• Digital communication signal FOUNDATION Fieldbus, 2-wire
– Signal coding: Manchester Bus Powered (MBP): Manchester II
– Transmission rate: 31.25 KBit/s voltage mode
Output Internal + LCD External + LCD Internal
1)
Option
4 to 20mA HART B A C
4 to 20mA HART, Li=0 E D F
PROFIBUS PA N M O
FOUNDATION Fieldbus Q P R
1) Product Configurator, order code for "Display, operation: "
Signal range 4 to 20 mA
3.8 mA to 20.5 mA
A0021280
Signal on alarm 4 to 20 mA HART
As per NAMUR NE43.
• Max. alarm: can be set from 21 to 23 mA (factory setting: 22 mA)
• Hold measured value: last measured value is held
• Min. alarm: 3.6 mA
PROFIBUS PA
As per NAMUR NE43.
Can be set in the Analog Input Block.
Options:
• Last Valid Out Value (factory setting)
• Fail Safe Value
• Status bad
FOUNDATION Fieldbus
As per NAMUR NE43.
Can be set in the Analog Input Block.
Options:
• Last Good Value
• Fail Safe Value (factory setting)
• Wrong Value
Load 4 to 20 mA HART
In order to guarantee sufficient terminal voltage in two-wire devices, a maximum load resistance R
(including line resistance) must not be exceeded depending on the supply voltage U0 of the supply
unit. In the following load diagrams, observe the position of the jumper and the explosion protection:
14 Endress+Hauser
Deltabar S PMD75, FMD77, FMD78
U – 11.5 V
23 mA
[ ]W
30
20
11.5
40 45
1239
1456
804
369
Test
£
B
U – 10.5 V
R
L
max
23 mA
£
30
20
10.5
U U
[V] [V]
40 45
1282
1500
847
413
[ ]W
R
L
max
Test
3
A
1
2
1
2
R
L
max
3
R
L
max
I
63 %
100 %
t
t1t
2
90 %
t
3
A Jumper for 4 to 20 mA test signal set to "Non-test" position
B Jumper for 4 to 20 mA test signal set to "Test" position
1 Power supply 10.5 (11.5) to 30 V DC for 1/2 G Ex ia, 1GD Ex ia, 1/2 GD Ex ia, FM IS, CSA IS, IECEx ia, NEPSI
2 Power supply 10.5 (11.5) to 45 V DC for devices for non-hazardous areas, 1/2 D, 1/3 D, 2 G Ex d, 3 G Ex nA,
3 R
U Supply voltage
Ex ia
FM XP, FM DIP, FM NI, CSA XP, CSA dust ignition-proof, NEPSI Ex d
maximum load resistance
Lmax
A0019988
Dead time, time constant
When operating via a handheld terminal or via a PC with an operating program, a minimum
communication resistance of 250 Ω must be taken into account.
Presentation of the dead time and the time constant:
A0019786
Endress+Hauser 15
Deltabar S PMD75, FMD77, FMD78
Dynamic behavior, current output
Type Measuring cell Dead time (t1) [ms] Time constant T63 (t2) [ms] Time constant T90 (t3) [ms]
PMD75 max. • 10 mbar (0.15 psi)
• 30 mbar (0.45 psi)
• 100 mbar (1.5 psi)
• 500 mbar (7.5 psi)
• 3 bar (45 psi)
• 16 bar (240 psi)
• 40 bar (600 psi)
• 160 bar (2 400 psi)
• 250 bar (3 750 psi)
FMD77,
FMD78
max. Dependent on the diaphragm seal
Dynamic behavior Digital output (HART electronics)
A typical burst rate of 300 ms results in the following behavior:
45 • 450
• 450
• 60
• 45
• 40
• 60
• 60
50 40 90
• 1040
• 1040
• 138
• 104
• 92
• 138
• 138
Type Measuring cell Dead time (t1) [ms] Dead time (t1) [ms] +
Time constant T63 (t2) [ms]
PMD75 min. • 10 mbar (0.15 psi)
• 30 mbar (0.45 psi)
• 100 mbar (1.5 psi)
• 500 mbar (7.5 psi)
• 3 bar (45 psi)
• 16 bar (240 psi)
• 40 bar (600 psi)
• 160 bar (2 400 psi)
• 250 bar (3 750 psi)
max. • 10 mbar (0.15 psi)
• 30 mbar (0.45 psi)
• 100 mbar (1.5 psi)
• 500 mbar (7.5 psi)
• 3 bar (45 psi)
• 16 bar (240 psi)
• 40 bar (600 psi)
• 160 bar (2 400 psi)
• 250 bar (3 750 psi)
FMD77,
FMD78
max. Dependent on the diaphragm seal
205 • 655
• 655
• 265
• 250
• 245
• 265
• 265
• 295
• 295
1005 • 1455
• 1455
• 1065
• 1050
• 1045
• 1065
• 1065
• 1095
• 1095
Dead time (t1) [ms] +
Time constant T90 (t3) [ms]
• 1200
• 1200
• 298
• 264
• 252
• 298
• 298
• 300
• 300
• 2000
• 2000
• 1098
• 1064
• 1052
• 1098
• 1098
• 1100
• 1100
Reading cycle
• Acyclic: max. 3/s, typically 1/s (depending on command # and number of preambles)
• Cyclic (burst): max. 3/s, typically 2/s
The device commands the BURST MODE functionality for cyclical value transmission via the HART
communication protocol.
Cycle time (update time)
Cyclic (burst): min. 300 ms
Response time
• Acyclic: min. 330 ms, typically 590 ms (depending on command # and number of preambles)
• Cyclic (burst): min. 160 ms, typically 350 ms (depending on command # and number of
preambles)
16 Endress+Hauser
Deltabar S PMD75, FMD77, FMD78
Dynamic behavior
A typical PLC cycle time of 1 s results in the following behavior:
PROFIBUS PA
Type Measuring cell Dead time (t1) [ms] Dead time (t1) [ms] +
Time constant T63 (t2) [ms]
PMD75 min. • 10 mbar (0.15 psi)
• 30 mbar (0.45 psi)
• 100 mbar (1.5 psi)
• 500 mbar (7.5 psi)
• 3 bar (45 psi)
• 16 bar (240 psi)
• 40 bar (600 psi)
max. • 10 mbar (0.15 psi)
• 30 mbar (0.45 psi)
• 100 mbar (1.5 psi)
• 500 mbar (7.5 psi)
• 3 bar (45 psi)
• 16 bar (240 psi)
• 40 bar (600 psi)
FMD77,
FMD78
max. Dependent on the diaphragm seal
80 • 530
• 530
• 140
• 125
• 120
• 140
• 140
1280 • 1730
• 1730
• 1340
• 1325
• 1320
• 1340
• 1340
Reading cycle (PLC)
• Acyclic: Typically 25/s
• Cyclic: Typically 30/s (depending on the number and type of the function blocks used in the
closed-control loop)
Dead time (t1) [ms] +
Time constant T90 (t3) [ms]
• 1075
• 1075
• 173
• 139
• 127
• 173
• 173
• 2275
• 2275
• 1373
• 1339
• 1327
• 1373
• 1373
Cycle time (update time)
min. 200 ms
The cycle time in a bus segment in cyclic data communication depends on the number of devices, on
the segment coupler used and on the internal PLC cycle time. A new measured value can be
determined up to five times a second.
Response time
• Acyclic: Approx. 60 ms to 70 ms (depending on Min. Slave Interval)
• Cyclic: Approx. 10 ms to 13 ms (depending on Min. Slave Interval)
Dynamic behavior FOUNDATION Fieldbus
Type Measuring cell Dead time (t1) [ms] Dead time (t1) [ms] +
PMD75 min. • 10 mbar (0.15 psi)
• 30 mbar (0.45 psi)
• 100 mbar (1.5 psi)
• 500 mbar (7.5 psi)
• 3 bar (45 psi)
• 16 bar (240 psi)
• 40 bar (600 psi)
max. • 10 mbar (0.15 psi)
• 30 mbar (0.45 psi)
• 100 mbar (1.5 psi)
• 500 mbar (7.5 psi)
• 3 bar (45 psi)
• 16 bar (240 psi)
• 40 bar (600 psi)
FMD77,
FMD78
max. Dependent on the diaphragm seal
A typical configuration for the macro cycle time (host system) of 1 s results in the following
behavior:
Time constant T63 (t2) [ms]
90 • 540
• 540
• 150
• 135
• 130
• 150
• 150
1090 • 1540
• 1540
• 1150
• 1135
• 1130
• 1150
• 1150
Dead time (t1) [ms] +
Time constant T90 (t3) [ms]
• 1085
• 1085
• 183
• 149
• 137
• 183
• 183
• 2085
• 2085
• 1183
• 1149
• 1137
• 1183
• 1183
Endress+Hauser 17
Deltabar S PMD75, FMD77, FMD78
Reading cycle
• Acyclic: Typically 10/s
• Cyclic: max. 10/s (dependent on the number and type of function blocks used in a closed-control
loop)
Cycle time (update time)
Cyclic: Min. 100 ms
Response time
• Acyclic: Typically 100 ms (for standard bus parameter settings)
• Cyclic: max. 20 ms (for standard bus parameter settings)
Damping
Alarm current
Firmware version
A damping affects all outputs (output signal, display):
• via local display, handheld terminal or PC with operating program, continuous from 0 to 999 s
• Also for HART and PROFIBUS PA: Via DIP switch on the electronic insert,
switch position "on" = set value and "off"
• Factory setting: 2 s
Designation Option
Min alarm current J
HART burst mode PV J
Min alarm current + HART burst mode PV J
1) Product Configurator, "Additional options 1" and "Additional options 2" ordering feature
Designation Option
02.20.zz, HART 7, DevRev22 72
02.11.zz, HART 5, DevRev21 73
04.00.zz, FF, DevRev07 74
04.01.zz, PROFIBUS PA, DevRev03 75
02.10.zz, HART 5, DevRev21 76
03.00.zz, FF, DevRev06 77
04.00.zz, PROFIBUS PA 78
02.30.zz, HART 7 In preparation
1)
1)
1) Product Configurator, order code for "Firmware version"
HART protocol-specific data
Manufacturer ID 17 (11 hex)
Device type code 23 (17 hex)
Device revision • 21 (15 hex) - SW version 02.1y.zz - HART specification 5
• 22 (16 hex) - SW version 02.2y.zz - HART specification 7
HART specification • 5
• 7
DD revision • 4 (Russian in language selection) for device revision 21
• 3 (Dutch in language selection) for device revision 21
• 1 for device revision 22
Device description files (DTM, DD) Information and files at:
• www.endress.com
• www.fieldcommgroup.org
HART load Min. 250 Ω
18 Endress+Hauser
Deltabar S PMD75, FMD77, FMD78
HART device variables The measured values are assigned to the device variables as follows:
Supported functions • Burst mode
Measured values for PV (primary variable)
• Pressure
• Flow
• Level
• Tank content
Measured values for SV, TV (second and third variable)
• Pressure
• Totalizer
Measured values for QV (fourth variable)
Temperature
• Additional transmitter status
• Device locking
• Alternative operating modes
PROFIBUS PA protocolspecific data
Manufacturer ID 17 (11 hex)
Identification number 1542 hex
Profile version 3.0
• SW version 03.00.zz
• SW version 04.00.zz
3.02
SW version 04.01.zz ( device revision 3)
Compatibility with SW version 03.00.zz and higher.
GSD revision • 4 (SW version 3.00.zz and 4.00.zz)
• 5 (device revision 3)
DD revision • 1 (SW version 3.00.zz and 4.00.zz)
• 1 (device revision 3)
GSD file Information and files at:
DD files
Output values Measured value for PV (via Analog Input Function Block)
Input values Input value sent from PLC, can be shown on display
Supported functions • Identification & maintenance Simplest device identifier on the
• www.endress.com
• www.profibus.org
• Pressure
• Level
• Flow
• Tank content
Measured value for SV
• Pressure
• Temperature
Measured value for QV
Totalizer
control system and nameplate
• Condensed status (only with Profile Version 3.02)
• Automatic ID number adjustment and switchable to the following ID
numbers (only with Profile Version 3.02):
– 9700: Profile-specific transmitter identification number with the
"Classic" or "Condensed" status".
– 1504: Compatibility mode for the old Deltabar S generation
(FMD230, FMD630, FMD633, PMD230, PMD235).
– 1542: Identification number of the new Deltabar S generation
( FMD77, FMD78, PMD75).
• Device locking: The device can be locked by hardware or software.
FOUNDATION Fieldbus protocol-specific data
Manufacturer ID 452B48 hex
Device type 1009 hex
Device revision • 6 - SW version 03.00.zz
• 7 - SW version 04.00.zz (FF-912)
Endress+Hauser 19
Deltabar S PMD75, FMD77, FMD78
DD revision • 3 (device revision 6)
• 2 (device revision 7)
CFF revision • 4 (device revision 6)
• 1 (device revision 7)
DD files Information and files at:
CFF files
Device tester version (ITK version) • 5.0 (device revision 6)
Number of ITK test campaign • IT054700 (Device Revision 6)
Link Master (LAS) capable Yes
Choice of "Link Master" and "Basic
Device"
Node address Factory setting: 247 (F7 hex)
Supported functions Field diagnostics profile (only with FF912)
Number of VCRs • 44 (device revision 6)
Number of link objects in VFD 50
• www.endress.com
• www.fieldcommgroup.org
• 6.01 (device revision 7)
• IT085400 (Device Revision 7)
Yes, factory setting is Basic Device
The following methods are supported:
• Restart
• Configure error as warning or alarm
• HistoROM
• Peakhold
• Alarm info
• Sensor trim
• 24 (device revision 7)
Virtual communication references (VCRs)
Device revision 6 Device revision 7
Permanent entries 44 1
Client VCRs 0 0
Server VCRs 5 10
Source VCRs 8 43
Sink VCRs 0 0
Subscriber VCRs 12 43
Publisher VCRs 19 43
Link settings
Device revision 6 Device revision 7
Slot time 4 4
Min. Inter PDU delay 12 10
Max. response delay 10 10
20 Endress+Hauser
Deltabar S PMD75, FMD77, FMD78
Transducer Blocks
Block Content Output values
TRD1 Block Contains all parameters related to
Service Block Contains service information • Pressure after damping (channel 3)
Dp Flow Block Contains flow and totalizer
Diagnostic Block Contains diagnostic information Error code via DI channels (channel 0 to 16)
Display Block Contains parameters to configure
Function blocks
the measurement
parameter
the onsite display
• Pressure, flow or level (channel 1)
• Process temperature (channel 2)
• Pressure peakhold indicator (channel 4)
• Counter for max. pressure transgressions (channel
5)
Totalizer 1 (channel 6)
No output values
Block Content Number
blocks
Resource Block This block contains all the data that uniquely identifies the device; it
is an electronic version of a nameplate for the device.
Analog Input
Block 1
Analog Input
Block 2
Analog Input
Block 3
Digital Input
Block
Digital Output
Block
PID Block This block is used as a proportional-integral-derivative controller and
Arithmetic
Block
Input Selector
Block
Signal
Characterizer
Block
The AI Block receives the measuring data from the Sensor Block,
(selectable via a channel number) and makes the data available to
other function blocks at its output. Enhancement: Digital outputs for
process alarms, fail safe mode
This block contains the discrete data of the Diagnose Block (selectable
via a channel number 0 to 16) and provides them for other blocks at
the output.
This block converts the discrete input and thus initiates an action
(selectable via a channel number) in the DP Flow Block or in the
Service Block. Channel 1 resets the counter for max. pressure
transgressions.
can be used universally for closed-loop-control in the field. It enables
cascade mode and feedforward control. Input IN can be indicated on
the display. The selection is performed in the Display Block
(DISPLAY_MAIN_LINE_CONTENT).
This block is designed to permit simple use of popular measurement
math functions. The user does not have to know how to write
equations. The math algorithm is selected by name, chosen by the
user for the function to be performed.
The Input Selector Block facilitates the selection of up to four inputs
and generates an output based on the configured action. This block
normally receives its inputs from AI Blocks. The block performs
maximum, minimum, average and ‘first good’ signal selection. Inputs
IN1 to IN4 can be indicated on the display. The selection is performed
in the Display Block (DISPLAY_MAIN_LINE_CONTENT).
The Signal Characterizer Block has two sections, each with an output
that is a non-linear function of the respective input. The non-linear
function is generated by a single look-up table with 21 arbitrary x-y
pairs.
1 enhanced enhanced
3 45 ms 45 ms
1 40 ms 30 ms standard enhanced
1 60 ms 40 ms standard enhanced
1 120 ms 70 ms standard enhanced
1 50 ms 40 ms standard enhanced
1 35 ms 35 ms standard enhanced
1 30 ms 40 ms standard enhanced
Execution time Functionality
Device
Revision 6
Device
Revision 7
(without
trend and
alarm
reports)
Device
Revision 6
enhanced enhanced
Device
Revision 7
Endress+Hauser 21
Deltabar S PMD75, FMD77, FMD78
Block Content Number
blocks
Integrator Block The Integrator Block integrates a variable as a function of the time or
accumulates the counts from a Pulse Input Block. The block can be
used as a totalizer that counts up until a reset, or as a batch totalizer
whereby the integrated value is compared against a target value
generated before or during the control routine and generates a binary
signal when the target value is reached.
Analog Alarm
Block
This block contains all process alarm conditions (working like a
comparator) and represents them at the output.
1 35 ms 40 ms standard enhanced
1 35 ms 35 ms standard enhanced
Additional function block information:
Instantiatable function blocks YES YES
Number of additional instantiatable function blocks 9 4
Execution time Functionality
Device
Revision 6
Device
Revision 7
Device
Revision 6
Device
Revision 7
22 Endress+Hauser
Deltabar S PMD75, FMD77, FMD78
4... 20mA
Test
Test
Test
4... 20mA Test
1
8
6
7
2
3
4
5
1
4
5
2
3
Power supply
WARNING
L
Electrical safety is compromised by an incorrect connection!
When using the measuring device in hazardous areas, the relevant national standards and
‣
regulations as well as the Safety Instructions or Installation or Control Drawings must also be
observed.→ 113.
All explosion protection data are given in separate documentation which is available upon
‣
request. The Ex documentation is supplied as standard with all Ex devices→ 113.
Devices with integrated overvoltage protection must be grounded→ 26.
‣
Protective circuits against reverse polarity, HF influences and overvoltage peaks are integrated.
‣
Terminal assignment 4 to 20 mA HART
A0019989
1 Housing
2 Supply voltage
3 4 to 20 mA
4 Devices with integrated overvoltage protection are labeled "OVP" (overvoltage protection) here.
5 External ground terminal
6 4 to 20 mA test signal between positive and test terminal
7 Internal ground terminal
8 Jumper for 4 to 20 mA test signal
PROFIBUS PA and FOUNDATION Fieldbus
A0020158
1 Housing
2 Supply voltage
3 Devices with integrated overvoltage protection are labeled "OVP" (overvoltage protection) here.
4 External ground terminal
5 Internal ground terminal
Endress+Hauser 23
Supply voltage 4 to 20 mA HART
Test
Test
Deltabar S PMD75, FMD77, FMD78
Electronic version Jumper for 4 to 20 mA test signal in
"Test" position (delivery status)
Version for nonhazardous area
Intrinsically safe 11.5 to 30 V DC 10.5 to 30 V DC
• Other types of
protection
• Devices without
certificate
11.5 to 45 V DC 10.5 to 45 V DC
11.5 to 45 V DC
(versions with 35 V DC plug-in
connection)
Jumper for 4 to 20 mA test signal in
"Non-test" position
10.5 to 45 V DC
(versions with 35 V DC plug-in
connection)
Measuring a 4 to 20 mA test signal
Jumper position for test
signal
Description
• Measurement of 4 to 20 mA test signal via the positive and test terminal:
Possible. (Thus, the output current can be measured without interruption via
the diode.)
• Delivery status
• Minimum supply voltage: 11.5 V DC
A0019992
• Measurement of 4 to 20 mA test signal via positive and test terminal: Not
possible.
• Minimum supply voltage: 10.5 V DC
PROFIBUS PA
• Version for non-hazardous areas: 9 to 32 V DC
• Ex ia: 10.5 to 30 V DC
FOUNDATION Fieldbus
• Version for non-hazardous areas: 9 to 32 V DC
• Ex ia: 10.5 to 30 V DC
Current consumption
• PROFIBUS PA: 13 mA ±1 mA, switch-on current corresponds to IEC 61158-2, Clause 21
• FOUNDATION Fieldbus: 15.5 mA ±1 mA, switch-on current corresponds to IEC 61158-2, Clause
21
Electrical connection PROFIBUS PA
The digital communication signal is transmitted to the bus via a two-wire connection. The bus also
provides the power supply. For further information on the network structure and grounding, and for
further bus system components such as bus cables, see the relevant documentation, e.g. Operating
Instructions BA00034S "PROFIBUS DP/PA: Guidelines for planning and commissioning" and the
PNO Guideline.
FOUNDATION Fieldbus
The digital communication signal is transmitted to the bus via a two-wire connection. The bus also
provides the power supply. For further information on the network structure and grounding and for
further bus system components such as bus cables, see the relevant documentation, e.g. Operating
Instructions BA00013S "FOUNDATION Fieldbus Overview" and the FOUNDATION Fieldbus Guideline.
A0019993
Terminals
• Supply voltage and internal ground terminal: 0.5 to 2.5 mm2 (20 to 14 AWG)
• External ground terminal: 0.5 to 4 mm2 (20 to 12 AWG)
24 Endress+Hauser
Deltabar S PMD75, FMD77, FMD78
Han7D
–
+
+ –
–
+
1
5
4
6
7
8
2
3
A B
2
1
3
4
Cable entries
Approval Cable gland Clamping area
Standard, II 1/2 G Ex ia, IS Plastic M20x1.5 5 to 10 mm (0.2 to 0.39 in)
ATEX II 1/2 D, II 1/3 D, II 1/2 GD Ex ia,
II 1 GD Ex ia, II 3 G Ex nA
For additional technical data, see section on housing → 49
Device plug Devices with Harting plug Han7D
A Electrical connection for devices with Harting plug Han7D
B View of the plug-in connection on the device
Metal M20x1.5 (Ex e) 7 to 10.5 mm (0.28 to 0.41 in)
A0019990
Material: CuZn, gold-plated plug-in jack and plug
Devices with M12 plug
1 Signal +
2 Not assigned
3 Signal –
4 Ground
Endress+Hauser offers the following accessories for devices with an M12 plug:
Plug-in jack M 12x1, straight
• Material: Body PA; coupling nut CuZn, nickel-plated
• Degree of protection (fully locked): IP67
• Order number: 52006263
Plug-in jack M 12x1, elbowed
• Material: Body PBT/PA; coupling nut GD-Zn, nickel-plated
• Degree of protection (fully locked): IP67
• Order number: 71114212
Cable 4x0.34 mm2 (20 AWG) with M12 socket, elbowed, screw plug, length 5 m (16 ft)
• Material: Body PUR; coupling nut CuSn/Ni; cable PVC
• Degree of protection (fully locked): IP67
• Order number: 52010285
A0011175
Endress+Hauser 25
Devices with 7/8" plug
4
2
3
1
1 Signal –
2 Signal +
3 Not assigned
4 Shielding
External thread: 7/8 - 16 UNC
• Material: 316L (1.4401)
• Degree of protection: IP68
Cable specification HART
• Endress+Hauser recommends using shielded, twisted-pair two-wire cables.
• Cable outer diameter: 5 to 9 mm (0.2 to 0.35 in) depending on the cable entry used → 25
Deltabar S PMD75, FMD77, FMD78
A0011176
Start-up current
Residual ripple
Overvoltage protection (optionally for HART, PROFIBUS PA and FOUNDATION Fieldbus)
PROFIBUS PA
Use a twisted, shielded twin-core cable, preferably cable type A.
For further information regarding cable specifications, see the Operating Instructions
BA00034S "PROFIBUS DP/PA: Guidelines for planning and commissioning", the PNO guideline
2.092 "PROFIBUS PA User and Installation Guideline" and IEC 61158-2 (MBP).
FOUNDATION Fieldbus
Use a twisted, shielded twin-core cable, preferably cable type A.
For further information on the cable specifications, see Operating Instructions BA00013S
"FOUNDATION Fieldbus Overview", FOUNDATION Fieldbus Guideline and IEC 61158-2 (MBP).
12 mA
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)].
• Overvoltage protection:
– Nominal functioning DC voltage: 600 V
– Nominal discharge current: 10 kA
• Surge current check î = 20 kA satisfied as per DIN EN 60079-14: 8/20 μs
• Arrester AC current check I = 10 A satisfied
Ordering information: Product Configurator, order code for "Additional options 1" or Additional
options 2", option "M"
NOTICE
Device could be destroyed!
Devices with integrated overvoltage protection must be grounded.
‣
Influence of power supply
≤0.0006 % of URL/1 V
26 Endress+Hauser
Deltabar S PMD75, FMD77, FMD78
Performance characteristics of differential pressure / pressure transmitter (sensor module + electronics module)
Preamble
The performance characteristic of the dP transmitter refers to "Accuracy of the transmitter". The
factors influencing accuracy can be divided into two groups
• Total performance of transmitter → 28
• Installation dependent influencing factors → 36
Total performance of transmitter
Reference accuracy [E1]
PMD75: Reference accuracy E1 as %
The specifications refer to the calibrated span/Upper Range Value (URV).
Measuring cell Standard Platinum
10 mbar (0.15 psi)
30 mbar (0.45 psi)
100 mbar (1.5 psi)
500 mbar (7.5 psi), 3 bar (45 psi)
16 bar (240 psi), 40 bar (600 psi)
160 bar (2 400 psi) rel/abs ,
250 bar (3 750 psi) rel/abs
Transmitter→ 28 total performance comprises the reference accuracy, the ambient temperature
effect and the static pressure and is calculated using the following formula:
Total performance = ± √ ( (E1)² + (E2)² + (E3)² )
E1 = Reference accuracy → 27
E2 = Ambient temperature effect per ±28 °C (50 °F) (corresponds to the range of
–3 to +53 °C (+27 to +127 °F)) → 30
E3 = Static pressure effect → 31
1)
• TD 1:1
• TD > 1:1
• TD ≤ 3:1
• TD > 3:1
• TD ≤ 5:1
• TD > 5:1
• TD ≤ 15:1
• TD > 15:1==
• TD ≤ 5:1
• TD > 5:1
==±0.075
±0.075 · TD
==±0.075
±0.025 · TD
==±0.05
±[0.009 · TD + 0.005]
±0.05
±[0.0015 · TD + 0.0275]
==±0.10
±0.02 · TD
• TD 1:1
• TD > 1:1
• TD 1:1
• TD > 1:1 to TD ≤ 3:1
• TD > 3:1
TD ≥ 1:1 = ±0.04
TD ≥ 1:1 = ±0.035
-
==±0.05
±0.075 · TD
==±0.05
±0.075
±0.025 · TD
1) Reference accuracy comprises the non-linearity [DIN EN 61298-2] including the hysteresis [DIN EN 61298-2] and the non-repeatability [DIN EN
61298-2] in accordance with the limit point method as per [DIN EN 60770]. Reference accuracy for standard up to TD 100:1, for platinum up to
TD 5:1. Valid for all membrane materials.
Endress+Hauser 27
Deltabar S PMD75, FMD77, FMD78
FMD77/FMD78: Reference accuracy as %
The specifications refer to the calibrated span / upper range value (URV)
Measuring cell FMD77 FMD77 with capillary on low-pressure side and
100 mbar (1.5 psi)
500 mbar (7.5 psi)
3 bar (45 psi), 16 bar (240 psi)
40 bar (600 psi)
1) Reference accuracy comprises the non-linearity [DIN EN 61298-2] including the hysteresis [DIN EN 61298-2] and the non-repeatability [DIN EN
61298-2] in accordance with the limit point method as per [DIN EN 60770]. Reference accuracy for standard up to TD 100:1. The specifications
refer to the calibrated span / upper range value (URV).
2) FMD77/FMD78: No diaphragm seal errors are taken into account. Diaphragm seal errors can be calculated separately in the Applicator
diaphragm seal calculation module. Link to online tool Applicator: www.endress.com/applicator → Sizing Diaphragm Seal
1)
2)
.
FMD78
• TD ≤ 5:1
• TD > 5:1
• TD ≤ 15:1
• TD > 15:1==
• TD ≤ 15:1
• TD > 15:1==
- • TD ≤ 15:1
==±0.10
±0.02 · TD
±0.075
±[0.0015 · TD + 0.053]
±0.075
±[0.0015 · TD + 0.053]
• TD ≤ 5:1
• TD > 5:1
• TD ≤ 5:1
• TD > 5:1
• TD ≤ 15:1
• TD > 15:1
• TD > 15:1
==±0.15
±0.03 · TD
==±0.15
±0.03 · TD
==±0.1
±[0.006 · TD + 0.01]
==±0.1
±[0.006 · TD + 0.01]
Please refer to the next chapter “Detailed performance explanation and calculation” for further
explanations on "Ambient temperature effect" as well as "Static pressure effect" .
Total performance – Specification values
PMD75: total performance as %
The specifications refer to the calibrated span/Upper Range Value (URV).
Measuring cell Standard
TD 1:1 TD 2:1 TD 3:1 TD 4:1 TD 5:1 TD 1:1 TD 2:1 TD 3:1 TD 4:1 TD 5:1
10 mbar (0.15 psi) ±0.30 ±0.52 ±0.74 ±0.96 ±1.18 ±0.26 ±0.44 ±0.61 ±0.78 ±0.96
30 mbar (0.45 psi) ±0.26 ±0.41 ±0.56 ±0.72 ±0.88 ±0.24 ±0.38 ±0.52 ±0.67 ±0.81
100 mbar (1.5 psi) ±0.20 ±0.27 ±0.34 ±0.41 ±0.49 ±0.20 ±0.26 ±0.33 ±0.40 ±0.47
500 mbar (7.5 psi) ±0.11 ±0.14 ±0.17 ±0.20 ±0.23 ±0.10 ±0.13 ±0.16 ±0.19 ±0.22
3 bar (45 psi) ±0.14 ±0.18 ±0.23 ±0.28 ±0.33 ±0.11 ±0.13 ±0.16 ±0.18 ±0.20
16 bar (240 psi) ±0.12 ±0.16 ±0.20 ±0.25 ±0.30 ±0.10 ±0.12 ±0.14 ±0.16 ±0.18
40 bar (600 psi) ±0.12 ±0.16 ±0.20 ±0.25 ±0.30 ±0.10 ±0.12 ±0.14 ±0.16 ±0.18
160 bar (2 400 psi) rel/abs
250 bar (3 750 psi) rel/abs
1) The specification values apply to the temperature range per ±28 °C (50 °F) (corresponds to the range of –3 to +53 °C (+27 to +127 °F)) for all
measuring cells. The specifications apply to a static pressure of 7 bar (105 psi) for measuring cells of 10 mbar (0.15 psi) to 500 mbar (7.5 psi),
for larger measuring cells of 70 bar (1 050 psi). The specification values apply to the analog output (i.e. including electronics errors). The
specification values apply to membrane material AISI 316L (1.4435), Alloy C .
±0.17 ±0.20 ±0.24 ±0.28 ±0.32 -
1)
Platinum
1)
28 Endress+Hauser
Deltabar S PMD75, FMD77, FMD78
Long-term stability
PMD75/FMD77/FMD78: long-term stability as %
The specifications refer to the upper range limit (URL)
Measuring cell Standard & platinum
10 mbar (0.15 psi) ± 0.200 ± 0.280 ± 0.310
30 mbar (0.45 psi) ± 0.200 ± 0.280 ± 0.310
100 mbar (1.5 psi) ± 0.080 ± 0.140 ± 0.270
500 mbar (7.5 psi) ± 0.025 ± 0.050 ± 0.075
3 bar (45 psi) ± 0.038 ± 0.075 ± 0.150
16 bar (240 psi) ± 0.025 ± 0.110 ± 0.210
40 bar (600 psi) ± 0.050 ± 0.070 ± 0.100
160 bar (2 400 psi) rel/abs
250 bar (3 750 psi) rel/abs
1) FMD77FMD78: No diaphragm seal errors are taken into account. Diaphragm seal errors can be calculated
separately in the Applicator diaphragm seal calculation module. Link to online tool Applicator:
www.endress.com/applicator → Sizing Diaphragm Seal
1)
.
1 year 5 years 10 years
± 0.050 ± 0.070 ± 0.100
Endress+Hauser 29
Deltabar S PMD75, FMD77, FMD78
Detailed Performance Explanation and Calculation
To calculate the total performance outside the temperature range of –3 to +53 °C (+27 to +127 °F) or
for a membrane material other than 1.4435/316L or Alloy C 276, please refer to the following
sections: "Ambient temperature effect", "Static pressure effect" and "Calculating the total
performance"
1)
.
Ambient temperature effect [E2]
• E2 = (E2M · CF1 · CF2) + E2E + E2
LT
• E2M = Main temperature error
• CF1 = Temperature range correction factor
• CF2 = Membrane material correction factor (thermal)
• E2E = Electronics error for analog output
• E2LT = low temperature error
E2M - Main temperature error
The output changes due to the effect of ambient temperature [IEC 61298-3] with respect to
reference temperature [DIN 16086]. The values specify the maximum error due to min./max.
ambient or process temperature conditions.
PMD75/FMD77/FMD78: main temperature error E2M as % per ±28 °C (50 °F) (corresponds to the range
of –3 to +53 °C (+27 to +127 °F))
The specifications refer to the calibrated span/Upper Range Value (URV).
Measuring cell Standard Platinum
10 mbar (0.15 psi),
30 mbar (0.45 psi)
100 mbar (1.5 psi) ± (0.07 · TD + 0.07) ± (0.07 · TD + 0.07)
500 mbar (7.5 psi) ± (0.03 · TD + 0.017) ± (0.03 · TD + 0.017)
3 bar (45 psi),
16 bar (240 psi),
40 bar (600 psi)
160 bar (2 400 psi) rel/abs ± (0.042 · TD + 0.04) -
250 bar (3 750 psi) rel/abs ± (0.022 · TD + 0.04) -
± (0.14 · TD + 0.04) ± (0.14 · TD + 0.04)
± (0.012 · TD + 0.017) ± (0.012 · TD + 0.017)
CF1 - Temperature range correction factor
PMD75/FMD77/FMD78: correction factor CF
Measuring cell Temperature range Factor, CF
For all measuring cells 25 °C ± 28 °C (–3 to +53 °C (+27 to +127 °F)) 1
–32 to –4 °C (–26 to +25 °F) and
+54 to +85 °C (+129 to +185 °F)
–50 to –33 °C (–58 to –27 °F) 2.3
1
2
CF2 - Membrane material correction factor (thermal) (only for PMD75)
PMD75: correction factor CF
Measuring cell AISI 316L Alloy C Gold-Rhodium Monel Tantalum
10 mbar (0.15 psi) 1.0 1.0 2.5 2.8 2.3
30 mbar (0.45 psi) 1.0 1.0 2.5 2.8 2.3
100 mbar (1.5 psi) 1.0 1.0 1.1 1.1 1.1
500 mbar (7.5 psi) 1.0 1.0 1.8 1.8 1.8
1) FMD77FMD78: No diaphragm seal errors are taken into account. Diaphragm seal errors can be calculated separately in the Applicator
diaphragm seal calculation module. Link to online tool Applicator: www.endress.com/applicator → Sizing Diaphragm Seal
2
1
30 Endress+Hauser
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