Endress+Hauser Promass 40 User manual

BA 061D/06/en/11.00
50098508
Valid as of software version:
V 1.00.XX (amplifier)
V 1.00.XX (communication)
promass 40
Coriolis Mass Flow
Measuring System
Operating Instructions

Promass 40
2Endress+Hauser
Promass 40 brief operating instructions
These brief operating instructions show you how to configure your measuring device
quickly and easily:
Safety instructions Page 5

Installation Page 9

Wiring Page 17

Switching on the measuring device Page 27

Display elements Page 23

Customer specific configuration Page 25
Complex measuring operations necessitate additional functions that you can
configure as necessary with the aid of the function matrix, and customise to suit
your process parameters.
 Note:
All functions are described in detail, as is the function matrix itself, in the
“Description of Device Functions” manual, which is a separate part of this
Operating Instruction.


Trouble-shooting Page 35 ff.
Always start trouble-shooting with the checklist on Page 35, if faults occur after
start-up or during operation. The routine takes you directly to the cause of the
problem and the appropriate remedial measures.
Returning devices
If you return a measuring device to Endress+Hauser for repair or calibration, you
must enclose the duly completed “Safety regulation” form with the device. You
will find a preprinted blank of the “Safety regulation” form at the back of this
manual.

Promass 40 Table of Contents
Endress+Hauser 3
Table of Contents
1 Safety instructions . . . . . . . . . . . . . . . . . 5
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Installation, commissioning and operation . . . 5
1.3 Operational safety . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.5 Notes on safety conventions and icons . . . . . . 6
2 Identification . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Device designation . . . . . . . . . . . . . . . . . . . . . 7
2.1.1 Nameplate of the transmitter . . . . . . . 7
2.1.2 Nameplate of the sensor. . . . . . . . . . . 8
2.2 CE mark, declaration of conformity . . . . . . . . . 8
2.3 Registered trademarks . . . . . . . . . . . . . . . . . . 8
3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 Incoming acceptance, transport and storage . 9
3.1.1 Incoming acceptance . . . . . . . . . . . . 9
3.1.2 Transport . . . . . . . . . . . . . . . . . . . . . . 9
3.1.3 Storage . . . . . . . . . . . . . . . . . . . . . . . 10
3.2 Installation conditions . . . . . . . . . . . . . . . . . . 10
3.2.1 Dimensions . . . . . . . . . . . . . . . . . . . 10
3.2.2 Mounting location . . . . . . . . . . . . . . . 10
3.2.3 Orientation. . . . . . . . . . . . . . . . . . . . . 12
3.2.4 Heating, thermal insulation . . . . . . . 13
3.2.5 Inlet and outlet runs . . . . . . . . . . . . . 13
3.2.6 Vibrations . . . . . . . . . . . . . . . . . . . . . 13
3.2.7 Limiting flow . . . . . . . . . . . . . . . . . . . 13
3.3 Installation instructions . . . . . . . . . . . . . . . . . 14
3.3.1 Turning the transmitter housing . . . 14
3.3.2 Turning the local display. . . . . . . . . . 15
3.4 Post installation check . . . . . . . . . . . . . . . . . . 15
4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1 Connecting the measuring unit . . . . . . . . . . . 17
4.1.1 Connecting the transmitter . . . . . . . . 17
4.1.2 Terminal assignment. . . . . . . . . . . . . 18
4.1.3 HART connection . . . . . . . . . . . . . . . 19
4.2 Potential equalisation . . . . . . . . . . . . . . . . . . . 20
4.3 Degree of protection . . . . . . . . . . . . . . . . . . . 20
4.4 Post connection check . . . . . . . . . . . . . . . . . 21
5 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1 Display element . . . . . . . . . . . . . . . . . . . . . . . 23
5.2 Operation with the HART protocol. . . . . . . . . 24
5.2.1 HART Communicator DXR 275 . . . . 24
5.2.2 FieldTool™ operating program . . . . 25
5.2.3 General notes . . . . . . . . . . . . . . . . . . 25
5.3 Display of error messages . . . . . . . . . . . . . . . 26
6 Commissioning. . . . . . . . . . . . . . . . . . . . 27
6.1 Function check . . . . . . . . . . . . . . . . . . . . . . . 27
6.2 Commissioning . . . . . . . . . . . . . . . . . . . . . . . 27
6.2.1 Switching on the measuring device . 27
6.2.2 Zero point adjustment . . . . . . . . . . . . 28
6.2.3 Density adjustment . . . . . . . . . . . . . . 30
6.2.4 Current output: active/passive . . . . . . 31
8 Accessories . . . . . . . . . . . . . . . . . . . . . . . .33
9 Trouble-shooting. . . . . . . . . . . . . . . . . . .35
9.1 Trouble-shooting instructions . . . . . . . . . . . . . 35
9.2 System error messages . . . . . . . . . . . . . . . . . 36
9.3 Process error messages . . . . . . . . . . . . . . . . . 39
9.4 Process errors without messages . . . . . . . . . . 41
9.5 Response of outputs to errors . . . . . . . . . . . . 42
9.6 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
9.7 Removing and installing printed circuit boards .
45
9.8 Replacing the device fuse . . . . . . . . . . . . . . . 47
9.9 Software history . . . . . . . . . . . . . . . . . . . . . . . 48
10 Technical data . . . . . . . . . . . . . . . . . . . . .49
10.1 Technical data at a glance . . . . . . . . . . . . . . . 49
10.1.1 Applications . . . . . . . . . . . . . . . . . . . 49
10.1.2 Function and system design . . . . . . . 49
10.1.3 Input . . . . . . . . . . . . . . . . . . . . . . . . . 49
10.1.4 Output . . . . . . . . . . . . . . . . . . . . . . . . 51
10.1.5 Auxiliary energy . . . . . . . . . . . . . . . . 51
10.1.6 Performance characteristics . . . . . . . 53
10.1.7 Operating conditions (installation) . . 54
10.1.8 Operating conditions (environment) . 54
10.1.9 Operating conditions (process) . . . . . 55
10.1.10 Mechanical construction . . . . . . . . . . 57
10.1.11 Human interface . . . . . . . . . . . . . . . . 57
10.1.12 Certificates and approvals . . . . . . . . 58
10.1.13 Ordering information . . . . . . . . . . . . . 58
10.1.14 Accessories . . . . . . . . . . . . . . . . . . . 58
10.1.15 Documentation . . . . . . . . . . . . . . . . . 58
10.2 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Table of Contents Promass 40
4Endress+Hauser

Promass 40 1 Safety instructions
Endress+Hauser 5
1 Safety instructions
1.1 Designated use
The measuring device described in these Operating Instructions is to be used only for
measuring the mass flow rate or volume flow rate of liquids and gases. Fluids with widely
differing properties can be measured, for example:
•additives
•oils, fats
•acids, alkalis
•lacquers, paints
•suspensions
•gases.
The manufacturer accepts no liability for damages resulting from incorrect use or use
not as designated.
1.2 Installation, commissioning and operation
Note the following points:
•Installation, connection to the electricity supply, commissioning and maintenance of
the device must be carried out by trained, qualified specialists authorised to perform
such work by the facility's owner operator. The specialist must have read and under-
stood this Operating Instruction and must follow the instructions it contains.
•The device must be operated by persons authorised and trained by the facility's
owner operator. Strict compliance with the instructions in the Operating Instruction is
mandatory.
•Endress+Hauser will be happy to assist in clarifying the chemical resistance proper-
ties of parts wetted by special fluids, including fluids used for cleaning. However the
user is responsible for the choice of fluid wetted materials as regards for their in-proc-
ess resistance to corrosion. The manufacturer refuses to accept liability.
•The installer must ensure that the measuring system is correctly wired in accordance
with the wiring diagrams. The transmitter must be grounded, unless the power supply
is galvanically insulated.
•Invariably, local regulations governing the opening and repair of electrical devices
apply.
1.3 Operational safety
Note the following points:
•Measuring systems for use in hazardous environments are accompanied by separate
“Ex documentation”, which is an integral part of this Operating Instruction. Strict com-
pliance with the installation instructions and ratings as stated in this supplementary
documentation is mandatory. The symbol on the front of this supplementary Ex docu-
mentation indicates the approval and the test center (
 Europe,  USA,
 Canada).
•The measuring device complies with the general safety requirements in accordance
with EN 61010, the EMC requirements of EN 61326, and NAMUR recommendation
NE 21.
•The manufacturer reserves the right to modify technical data without prior notice. Your
E+H distributor will supply you with current information and updates to this Operating
Instruction.

1 Safety instructions Promass 40
6Endress+Hauser
1.4 Return
The following procedures must be carried out before a flowmeter requiring repair or
calibration, for example, is returned to Endress+Hauser:
•Always enclose a duly completed “Safety regulation”form. Only then can
Endress+Hauser transport, examine and repair a returned device.
•Enclose special handling instructions if necessary, for example a safety data sheet as
per EN 91/155/EEC.
•Remove all residues. Pay special attention to the grooves for seals and crevices which
could contain residues. This is particularly important if the substance is hazardous to
health, e.g. flammable, toxic, caustic, carcinogenic, etc.

Note:
You will find a preprinted blank of the “Safety regulation”form at the back of this manual.

Warning:
•Do not return a measuring device if you are not absolutely certain that all traces of
hazardous substances have been removed, e.g. substances which have penetrated
crevices or diffused through plastic.
•Costs incurred for waste disposal and injury (burns, etc.) due to inadequate cleaning
will be charged to the owner operator.
1.5 Notes on safety conventions and icons
The devices are designed to meet state-of-the-art safety requirements, have been
tested, and left the factory in a condition in which they are safe to operate. The devices
comply with the applicable standards and regulations in accordance with EN 61010
“Protection Measures for Electrical Equipment for Measurement, Control, Regulation
and Laboratory Procedures”. They can, however, be a source of danger if used incor-
rectly or for other than the designated use.
Consequently, always pay particular attention to the safety instructions indicated in this
Operating Instruction by the following icons:

Warning:
“Warning”indicates an action or procedure which, if not performed correctly, can result
in injury or a safety hazard. Comply strictly with the instructions and proceed with care.

Caution:
“Caution”indicates an action or procedure which, if not performed correctly, can result
in incorrect operation or destruction of the device. Comply strictly with the instructions.

Note:
“Note”indicates an action or procedure which, if not performed correctly, can have an
indirect effect on operation or trigger an unexpected response on the part of the device.

Promass 40 2 Identification
Endress+Hauser 7
2 Identification
2.1 Device designation
The “Promass 40”flow measuring system consists of the following components:
•Promass 40 transmitter
•Promass E sensor
2.1.1 Nameplate of the transmitter
Fig. 1: Nameplate specifications for the “Promass 40” transmitter (example)
1 Ordering code/serial number: See the specifications on the order confirmation for the meanings of the
individual letters and digits.
2 Power supply / frequency: 16...62 V DC / 20...55 V AC / 50...60 Hz
Power consumption: 15 VA / W
3 Available inputs / outputs:
I-OUT (HART): with current output (HART)
f-OUT: with pulse/frequency output
STATUS-IN: with status input (auxiliary input)
STATUS-OUT: with status output (switching output)
4 Reserved for information on special products
5 Ambient temperature range
6 Degree of protection
F-40xxxxxx-18-06-xx-xx-000

2 Identification Promass 40
8Endress+Hauser
2.1.2 Nameplate of the sensor
Fig. 2: Nameplate specifications for the “Promass E”sensor (example)
1 Ordering code/serial number: See the specifications on the order confirmation for the meanings of the
individual letters and digits.
2 Calibration factor: 2.500; zero point: -6
3 Nominal diameter: DN 25 / 1"
Pressure rating: DIN PN 100 bar
4 Material of measuring tubes: Stainless steel 1.4539/904L
5 TMmax +125 °C / +256 °F (max. fluid temperature)
6 Additional information (example):
–With 3-point calibration
–With 3.1 B certification for fluid wetted materials
7 Ambient temperature range
8 Degree of protection
9 Flow direction
2.2 CE mark, declaration of conformity
The devices are designed to meet state-of-the-art safety requirements, have been
tested, and left the factory in a condition in which they are safe to operate. The devices
comply with the applicable standards and regulations in accordance with EN 61010
“Protection Measures for Electrical Equipment for Measurement, Control, Regulation
and Laboratory Procedures”.
The measuring system described in this Operating Instruction thus complies with the
statutory requirements of the EC Directives. Endress+Hauser confirms successful
testing of the device by affixing to it the CE mark.
2.3 Registered trademarks
TRI-CLAMP ®
is a registered trademark of Ladish & Co., Inc., Kenosha, USA
SWAGELOK ®
is a registered trademark of Swagelok & Co., Solon, USA
HART ®
is a registered trademark of HART Communication Foundation, Austin, USA
S-DAT™, FieldTool™, FieldCheck™, Applicator™
are registered trademarks of Endress+Hauser Flowtec AG, Reinach, CH
F06-xxxxxxxx-18-05-xx-xx-000

Promass 40 3 Installation
Endress+Hauser 9
3 Installation
3.1 Incoming acceptance, transport and storage
3.1.1 Incoming acceptance
On receipt of the goods, check the following points:
•Check the packaging and the contents for damage.
•Check the shipment, make sure nothing is missing and that the scope of supply
matches your order.
3.1.2 Transport
The following instructions apply to unpacking and to transporting the device to its final
location:
•Transport the devices in the containers in which they are delivered.
•The covers or caps fitted to the process connections prevent mechanical damage to
the sealing faces and the ingress of foreign matter to the measuring tube during trans-
portation and storage. Consequently, do not remove these covers or caps until imme-
diately before installation.
•Do not lift measuring devices of nominal diameters DN 40...50 by the transmitter hous-
ing or the connection housing in the case of the remote version (Fig. 3). Use webbing
slings slung round the two process connections (Fig. 3). Do not use chains, as they
could damage the housing.

Warning:
Risk of injury if the measuring device slips. The center of gravity of the assembled meas-
uring device might be higher than the points around which the slings are slung.
At all times, therefore, make sure that the device does not unexpectedly turn around its
axis or slip.
Fig. 3: Instructions for transporting sensors with DN 40...50
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3 Installation Promass 40
10 Endress+Hauser
3.1.3 Storage
Note the following points:
•Pack the measuring device in such a way as to protect it reliably against impact for
storage (and transportation). The original packaging provides optimum protection.
•The permissible storage temperature is −40...+80 °C (preferably +20 °C).
•Do not remove the protective covers or caps on the process connections until you are
ready to install the device.
3.2 Installation conditions
Note the following points:
•No special measures such as supports are necessary. External forces are absorbed
by the construction of the instrument.
•The high oscillation frequency of the measuring tubes ensures that the correct oper-
ation of the measuring system is not influenced by pipe vibrations.
•No special precautions need to be taken for fittings which create turbulence (valves,
elbows, T-pieces, etc.), as long as no cavitation occurs.
3.2.1 Dimensions
Dimensions and the fitting lengths of the transmitter and sensor are on see Page 59 ff.
3.2.2 Mounting location
Entrained air or gas bubbles in the measuring tube can result in an increase in measur-
ing errors. Avoid the following locations:
•Highest point in a run. Risk of air accumulating.
•Directly upstream from an open pipe outlet in a down pipe.
Fig. 4: Mounting location
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Promass 40 3 Installation
Endress+Hauser 11
The proposed configuration in Fig. 5, however, permits installation in an open down
pipe. Pipe restrictors or the use of an orifice with a smaller cross-section than the nom-
inal diameter prevent the sensor from running empty while measurement is in progress.
Fig. 5: Installation in a down pipe (e.g. for batching applications)
1 Supply tank
2 Sensor
3 Choke, restrictor
4Valve
5 Batching tank
System pressure
It is important to ensure that cavitation does not occur, because it would influence the
oscillation of the measuring tube. No special measures need to be taken for fluids which
have properties similar to water under normal conditions.
In the case of liquids with a low boiling point (hydrocarbons, solvents, liquefied gases)
or in suction lines, it is important to ensure that pressure does not drop below the vapour
pressure and that the liquid does not start to boil. It is also important to ensure that the
gases that occur naturally in many liquids do not outgas. Such effects can be prevented
when system pressure is sufficiently high.
Consequently, it is generally best to install the sensor:
•downstream from pumps (no risk of partial vacuum)
•at the lowest point in a vertical pipe
Promass E / DN 8 15254050
Øorifice / pipe restriction 6 mm 10 mm 14 mm 22 mm 28 mm
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3 Installation Promass 40
12 Endress+Hauser
3.2.3 Orientation
Vertical:
Recommended orientation with upward direction of flow (View 1). When fluid is not flow-
ing, entrained solids will sink down and gases will rise away from the measuring tube.
The measuring tubes can be completely drained and protected against solids build-up.
Fig. 6: Orientation Promass E
Horizontal:
The measuring tubes of Promass E must be horizontal and beside each other. When
installation is correct the transmitter housing is above or below the pipe (Views 2, 3).
Always avoid having the transmitter housing in the same horizontal plane as the pipe.

Caution:
The measuring tubes of Promass E are slightly curved. The position of the sensor, there-
fore, has to be matched to the fluid properties when the sensor is installed horizontally
(Fig. 7).
Fig. 7: Promass E installed horizontally
a Not suitable for fluids with entrained solids. Risk of solids accumulating.
b Not suitable for outgassing fluids. Risk of air accumulating.
F06-xxxxxxxx-11-00-00-xx-000F06-xxxxxxxx-11-00-00-xx-003

Promass 40 3 Installation
Endress+Hauser 13
Fluid temperature
In order to ensure that the maximum permissible ambient temperature for the transmitter
(–20...+60 °C) is not exceeded, we recommend the following orientations:
High fluid temperature
•Vertical piping: installation in accordance with Fig. 6 / View 1
•Horizontal piping: installation in accordance with Fig. 6 / View 3
Low fluid temperature
•Vertical piping: installation in accordance with Fig. 6 / View 1
•Horizontal piping: installation in accordance with Fig. 6 / View 2
3.2.4 Heating, thermal insulation
Some fluids require suitable measures to avoid heat transfer at the sensor.
A wide range of materials can be used to provide the required thermal insulation. Heat-
ing can be electric, e.g. with heated elements, or by means of hot water or steam pipes
made of copper.

Caution:
Risk of electronics overheating!
•Make sure that the connector between sensor and transmitter always remains free of
insulating material. Bear in mind that a certain orientation might be required, depend-
ing on the temperature of the fluid (see Section 3.2.3 “Fluid temperature”).
•Information on permissible temperature ranges →Page 54.
3.2.5 Inlet and outlet runs
There are no installation requirements regarding inlet and outlet runs. If possible, install
the sensor well clear of fittings such as valves, T-pieces, elbows, etc.
3.2.6 Vibrations
The high oscillation frequency of the measuring tubes ensures that the correct operation
of the measuring system is not influenced by pipe vibrations. Consequently, the sensors
require no special measures for attachment.
3.2.7 Limiting flow
See the information on Page 50 and 55.

3 Installation Promass 40
14 Endress+Hauser
3.3 Installation instructions
3.3.1 Turning the transmitter housing

Warning:
The turning mechanism in devices with EEx d/de or FM/CSA Cl. I Div. 1 classification is
not the same as that described here. The procedure for turning these housings is
described in the Ex-specific documentation.
1. Loosen the two securing screws.
2. Turn the bayonet catch as far as it will go.
3. Carefully lift the transmitter housing as far as it will go.
4. Turn the transmitter housing to the desired position (max. 2 x 90°in either direction).
5. Lower the housing into position and re-engage the bayonet catch.
6. Retighten the two securing screws.
Fig. 8: Turning the transmitter housing (aluminum field housing)
F06-xxxxxxxx-17-06-xx-xx-000

Promass 40 3 Installation
Endress+Hauser 15
3.3.2 Turning the local display
1. Remove the cover of the electronics compartment.
2. Press the side latches on the display module and remove it from the electronics
compartment cover.
3. Rotate the display to the desired position (max. 4x45°in each direction), and reset
it into the electronics compartment cover.
4. Screw the cover of the electronics compartment firmly onto the transmitter housing.
Fig. 9: Turning the local display (field housing)
3.4 Post installation check
Perform the following checks after installing the measuring device in the pipe:
Device condition and specifications Notes
Is the device damaged (visual inspection)? −
Does the device correspond to specifications at the measuring point,
including process temperature and pressure, ambient temperature,
measuring range, etc.?
see Page 49 ff.
Installation Notes
Does the arrow on the sensor nameplate match the direction of flow
through the pipe? −
Are the measuring point number and labeling correct (visual inspec-
tion)?
–
Is the orientation chosen for the sensor correct, in other words suitable
for sensor type, fluid properties (outgassing, with entrained solids)
and fluid temperature?
see Page 10 ff.
Process environment / process conditions Notes
Is the measuring device protected against moisture and direct
sunlight?
−
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3 Installation Promass 40
16 Endress+Hauser

Promass 40 4 Wiring
Endress+Hauser 17
4Wiring

Warning:
When connecting Ex-certified devices, see the notes and diagrams in the Ex-specific
supplement to this Operating Instruction. Please do not hesitate to contact your E+H
representative if you have any questions.
4.1 Connecting the measuring unit
4.1.1 Connecting the transmitter

Warning:
•Risk of electric shock. Switch off the power supply before opening the device. Do not
install or wire the device while it is connected to the power supply. Failure to comply
with this precaution can result in irreparable damage to the electronics.
•Risk of electric shock. Connect the protective conductor to the ground terminal on the
housing before the power supply is applied (not necessary if the power supply is gal-
vanically isolated).
•Compare the specifications on the nameplate with the local voltage supply and fre-
quency. The national regulations governing the installation of electrical equipment
also apply.
1. Remove the cover of the connection compartment (f) from the transmitter housing.
2. Feed the power supply cable (a) and signal cables (b) through the appropriate
cable entries.
3. Connect the cables:
–Wiring diagramm →Fig. 10
–Terminal assignment →Page 18
4. Screw the cover of the connection compartment (g) firmly onto the transmitter
housing.
Fig. 10: Connecting the transmitter (aluminium field housing); Cable cross-section: max. 2.5 mm2
a Cable for power supply: 85...260 V AC, 20...55 V AC, 16...62 V DC
Terminal No. 1: L1 for AC, L+ for DC
Terminal No. 2: N for AC, L−for DC
b Signal cable: Terminals Nos. 20–27 →Page 17
c Ground terminal for protective conductor
d Ground terminal for signal cable shield
e Service adapter for connecting service interface FXA 193 (FieldCheck™, FieldTool™)
f Cover of the connection compartment
g Locking clipTerminal assignment
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4 Wiring Promass 40
18 Endress+Hauser
4.1.2 Terminal assignment
Terminal Nos. (inputs/outputs)
Order variant 20 −21 22 −23 24 −25 26 −27
40***-***********A−−Frequency output Current output
HART
40***-***********DStatus input Status output Frequency output Current output
HART
40***-***********S−−
Frequency output
EEx i
Current output
EEx i, active, HART
40***-***********T−−
Frequency output
EEx i
Current output
EEx i, passive,
HART
Status input (Auxiliary input)
galvanically isolated, 3...30 V DC, Ri= 5 kΩ, configurable
Status output
Open collector, max. 30 V DC / 250 mA, galvanically isolated, configurable
Frequency output (passive)
Open collector, galvanically isolated, 30 V DC, 250 mA
–Frequency output: full scale frequency 2...1000 Hz (fmax = 1250 Hz), on/off ratio 1:1,
pulse width max. 10 s
–Pulse output: pulse value and pulse polarity selectable, max. pulse width adjustable (0.05...2 s),
max. pulse frequency selectable
Current output HART (active/passive)
galvanically isolated, active: 0/4...20 mA, RL< 700 Ω, HART: RL≥250 Ω,
passive: 4...20 mA, max. 30 V DC, Ri≤150 Ω
Current output HART EEx i (active, passive)
Frequency output EEx i (passive)
See the Ex documentation for details on the Ex-relevant data.
The Ex documentation is available for the following approvals:
 = Europe,  = USA,  = Canada

Promass 40 4 Wiring
Endress+Hauser 19
4.1.3 HART connection
Users have the following connection options at their disposal:
•Direct connection to transmitter by means of terminals 26 / 27
•Connection by means of the 4...20 mA circuit.

Note:
•The measuring loop's minimum load must be at least 250 Ω.
Connection of the HART handheld communicator
See also the documentation issued by the HART Communication Foundation, and in
particular HCF LIT 20: “HART, a technical summary”.
Fig. 11: Electrical connection of the HART handheld communicator:
1 = HART communicator, 2 = power supply, 3 = shield, 4 = other evaluation devices or PLC with passive input
Connecting a PC with operating software
In order to connect a personal computer with a operating software (e.g. “FieldTool™”) a
HART modem (e.g. Commubox FXA 191) is needed.
See also the documentation issued by the HART Communication Foundation, and in
particular HCF LIT 20: “HART, a technical summary”.
Fig. 12: Electrical connection of a PC with operating software:
1 = PC with operating software, 2 = power supply, 3 = shield, 4 = other evaluation devices or PLC with passive
input, 5 = HART modem, e.g. Commubox FXA 191
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4 Wiring Promass 40
20 Endress+Hauser
4.2 Potential equalisation
No special measures for potential equalisation are required.
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Note:
For instruments for use in hazardous areas, observe the corresponding guidelines in the
specific Ex documentation.
4.3 Degree of protection
The devices fulfill all the requirements for IP 67. Compliance with the following points is
mandatory following installation in the field or servicing, in order to ensure that IP 67 pro-
tection is maintained:
•The housing seals must be clean and undamaged when inserted into their grooves.
The seals must be dried, cleaned or replaced if necessary.
•All threaded fasteners and screw covers must be firmly tightened.
•The cables used for connection must be of the specified outside diameter
(see Page 51).
•Firmly tighten the cable entries (Fig. 13).
•The cables must loop down before they enter the cable entries (“water trap”, Fig. 13).
This arrangement prevents moisture from penetrating the entry. Always install the
measuring device in such a way that the cable entries do not point up.
•Remove all unused cable entries and insert plugs instead.
•Do not remove the grommet from the cable entry.
Fig. 13: Installation instructions, cable entries
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