Endress+Hauser Proline Promag 50P Manual

TI047D/24/ae/07.06
Technical Information
Proline Promag 50P, 53P
Electromagnetic Flow Measuring System
Flow rate measurement in chemical or process applications
Application
Electromagnetic flowmeter for bidirectional
measurement of liquids with a minimum conductivity
of ≥ 5 µS/cm:
• Acids and caustic solutions
•Paints
•Pastes,mashes
• Water, wastewater etc.
• Flow measurement up to 44,000 GPM
(9600 m3/h)
• Fluid temperature up to 356°F (180°C)
• Process pressures up to 580 psi (40 bar)
• Fitting lengths to DVGW/ISO
Application-specific lining materials:
• PTFE und PFA
Approvals for hazardous area:
• ATEX, FM, CSA, TIIS
Connection to process control system:
•HART
®, Profibus®DP/PA, FOUNDATION™
Fieldbus, MODBUS®RS485
Your benefits
Promag measuring devices offer you cost-effective flow
measurement with a high degree of accuracy for a wide
range of process conditions.
The Proline transmitter concept comprises:
• Modular device and operating concept resulting in a
higher degree of efficiency
• Software options for batching, electrode cleaning and
for measuring pulsating flow.
• Uniform operating concept
The tried-and-tested Promag sensors offer:
•Nopressureloss
• Not sensitive to vibrations
• Simple installation and commissioning

Proline Promag 50P, 53P
2Endress+Hauser
Function and system design
Measuring principle Faraday’s law of induction states that a voltage is induced in a conductor moving in a magnetic field.
In electromagnetic measuring, the flowing medium corresponds to the moving conductor. The induced voltage
is proportional to the flow velocity and is detected by two measuring electrodes and transmitted to the ampli-
fier. Flow volume is computed on the basis of the pipe's diameter. The constant magnetic field is generated by
a switched direct current of alternating polarity.
A0003191
Ue = B · L · v
Q = A · v
Ue = induced voltage
B = magnetic induction (magnetic field)
L = electrode gap
v = flow velocity
Q = volume flow
A = pipe cross-section
I = current strength
Measuring system The measuring system consists of a transmitter and a sensor.
Two versions are available:
• Compact version: transmitter and sensor form a single mechanical unit.
• Remote version: transmitter and sensor are installed separately.
Transmitter:
The Promag 50/53 transmitters incorporate a high impedance amplifier of 1 x 1012 ohms or greater.
• Promag 50 (user interface with push buttons for operation, two-line display)
• Promag 53 (“Touch Control” without opening the housing, four-line display)
Sensor:
• 1/2" to 24" (DN 15 to 600)
Input
Measured variable Flow rate (proportional to induced voltage)
Measuring range Typically v = 0.033 to 33 ft/s (0.01 to 10 m/s) with the specified measuring accuracy
Operable flow range Over 1000 : 1
Input signal Status input (auxiliary input):
U = 3 to 30 V DC, Ri= 5 kΩ,galvanically isolated.
Configurable for: totalizer(s) reset, measured value suppression, error-message reset.
Status input (auxiliary input) with PROFIBUS DP and MODBUS RS485:
U = 3 to 30 V DC, Ri= 3 kΩ, galvanically isolated
Ue
I
I
B
L
V

Proline Promag 50P, 53P
Endress+Hauser 3
Switching level: 3 to 30 V DC, independent of polarity
Configurable for: totalizer(s) reset, measured value suppression, error-message reset,
batching start/stop (optional), batch totalizer reset (optional)
Current input (for Promag 53 only):
Active/passive selectable, galvanically isolated, full scale value selectable, resolution: 3 µA,
temperature coefficient: typ. 0.003% o.r./°F (0.005% o.r./°C), o.r. = of reading
active: 4 to 20 mA, Ri≤150 Ω, Uout = 24 V DC, short-circuit-proof
passive: 0/4 to 20 mA, Ri≤ 150 Ω, Umax = 30 V DC
Output
Output signal Promag 50
Current output:
active/passive selectable, galvanically isolated, time constant selectable (0.01 to 100 s),
full scale value selectable, temperature coefficient: typ. 0.003% o.r./°F (0.005% o.r./°C), o.r. = of reading,
resolution: 0.5 µA
• active: 0/4 to 20 mA, RL< 700 Ω(HART: RL≥250 Ω)
• passive: 4 to 20 mA, operating voltage VS18 to 30 V DC, Ri≤150 Ω
Pulse/frequency output:
passive, open collector, 30 V DC, 250 mA, galvanically isolated.
• Frequency output: full scale frequency 2 to 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 configurable
(0.5 to 2000 ms)
PROFIBUS DP interface:
• Transmission technology (Physical Layer): RS485 in accordance with ANSI/TIA/EIA-485-A: 1998,
galvanically isolated
• Profile version 3.0
• Data transmission rate: 9.6 kBaud to 12 MBaud
• Automatic data transmission rate recognition
• Function blocks: 1 x analog input, 3 x totalizer
• Output data: volume flow, totalizer
• Input data: positive zero return (ON/OFF), totalizer control, value for local display
• Cyclic data transmission compatible with previous model “Promag 33”
• Bus address adjustable via miniature switches or local display (optional) at the measuring device

Proline Promag 50P, 53P
4Endress+Hauser
PROFIBUS PA interface:
• Transmission technology (Physical Layer): IEC 61158-2 (MBP), galvanically isolated
• Profile version 3.0
• Current consumption: 11 mA
• Permissible supply voltage: 9 to 32 V
• Bus connection with integrated reverse polarity protection
• Error current FDE (Fault Disconnection Electronic): 0 mA
• Function blocks: 1 x analog input, 1 x totalizer
• Output data: volume flow, totalizer
• Input data: positive zero return (ON/OFF), control totalizer, value for local display
• Cyclic data transmission compatible with previous model “Promag 33”
• Bus address adjustable via miniature switches or local display (optional) at the measuring device
Promag 53
Current output:
active/passive selectable, galvanically isolated, time constant selectable (0.01 to 100 s),
full scale value selectable, temperature coefficient: typically 0.005% o.r./°C (o.r. = of reading),
resolution: 0.5 µA
• active: 0/4 to 20 mA, RL< 700 Ω(HART: RL≥250 Ω)
• passive: 4 to 20 mA, operating voltage VS18 to 30 V DC, Ri≤150 Ω
Pulse/frequency output:
active/passive selectable, galvanically isolated (Ex i version: only passive)
• active: 24 V DC, 25 mA (max. 250 mA during 20 ms), RL> 100 Ω
• passive: open collector, 30 V DC, 250 mA
• Frequency output: full scale frequency 2 to 10000 Hz (fmax = 12500 Hz), EEx-ia: 2 to 5000 Hz;
on/off ratio 1:1; pulse width max. 10 s.
• Pulse output: pulse value and pulse polarity adjustable, pulse width configurable
(0.05 to 2000 ms)
PROFIBUS DP interface:
• Transmission technology (Physical Layer): RS485 in accordance with ANSI/TIA/EIA-485-A:
1998, galvanically isolated
• Profile version 3.0
• Data transmission rate: 9.6 kBaud to 12 MBaud
• Automatic data transmission rate recognition
• Function blocks: 2 x analog input, 3 x totalizer
• Output data: volume flow, calculated mass flow, totalizer 1 to 3
• Input data: positive zero return (ON/OFF), totalizer control, value for local display
• Cyclic data transmission compatible with previous model “Promag 33”
• Bus address adjustable via miniature switches or local display (optional) at the measuring device
• Available output combination → Page 7 ff.
PROFIBUS PA interface:
• Transmission technology (Physical Layer): IEC 61158-2 (MBP), galvanically isolated
• Profile version 3.0
• Current consumption: 11 mA
• Permissible supply voltage: 9 to 32 V
• Bus connection with integrated reverse polarity protection
• Error current FDE (Fault Disconnection Electronic): 0 mA
• Function blocks: 2 x analog input, 3 x totalizer
• Output data: volume flow, calculated mass flow, totalizer 1 to 3
• Input data: positive zero return (ON/OFF), totalizer control, value for local display
• Cyclic data transmission compatible with previous model “Promag 33”
• Bus address adjustable via miniature switches or local display (optional) at the measuring device

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Endress+Hauser 5
MODBUS interface:
• Transmission technology (Physical Layer): RS485 in accordance with ANSI/TIA/EIA-485-A:
1998, galvanically isolated
• MODBUS device type: Slave
• Address range: 1 to 247
• Bus address adjustable via miniature switches or local display (optional) at the measuring device
• Supported MODBUS function codes: 03, 04, 06, 08, 16, 23
• Broadcast: supported with the function codes 06, 16, 23
• Transmission mode: RTU oder ASCII
• Supported baudrate: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 Baud
• Response time:
Direct data access = typically 25 to 50 ms
Auto-scan buffer (data range) = typically 3 to 5 ms
• Available output combination → Page 7 ff.
FOUNDATION Fieldbus interface:
• FOUNDATION Fieldbus H1
• Transmission technology (Physical Layer): IEC 61158-2 (MBP), galvanically isolated
• ITK version 4.01
• Current consumption: 12 mA
• Error current FDE (Fault Disconnection Electronic): 0 mA
• Bus connection with integrated reverse polarity protection
• Function blocks: 5 x analog input, 1 x discrete output, 1 x PID
• Output data: volume flow, calculated mass flow, temperature, totalizer 1 to 3
• Input data: positive zero return (ON/OFF), reset totalizer
• Link Master (LM) functionality is supported
Signal on alarm • Current output → failure response selectable (e.g. in accord. with NAMUR Recom. NE 43)
• Pulse/frequency output → failure response selectable
• Status output (Promag 50) → non-conductive by fault or power supply failure
• Relay output (Promag 53) → de-energized by fault or power supply failure
Load See “Output signal”
Switching output Status output (Promag 50, Promag 53):
Open collector, max. 30 V DC / 250 mA, galvanically isolated.
Configurable for: error messages, Empty Pipe Detection (EPD), flow direction, limit values.
Relay outputs (Promag 53):
Normally closed (NC or break) or normally open (NO or make) contacts available
(default: relay 1 = NO, relay 2 = NC)
max. 30 V / 0.5 A AC; 60 V / 0.1 A DC, galvanically isolated.
Configurable for: error messages, Empty Pipe Detection (EPD), flow direction, limit values, batching contacts.
Low flow cutoff Switch points for low flow cutoff are selectable
Galvanic isolation All circuits for inputs, outputs, and power supply are galvanically isolated from each other.

Proline Promag 50P, 53P
6Endress+Hauser
Power supply
Electrical connection
Measuring unit
a0002441
Cable cross section max. 16 AWG (2.5 mm2)
A View A (field housing)
B View B (stainless steel field housing)
C View C (wall-mount housing)
*) not changeable communication board
**) changeable communication board
a Cover of the connection compartment
b Cable for power supply: 85 to 260 V AC, 20 to 55 V AC,16 to 62 V DC
Terminal No. 1: L1 for AC, L+ for DC
Terminal No. 2: N for AC, L- for DC
c Ground terminal for protective conductor
d Signal cable: see Terminal assignment →Page 7 ff.
Fieldbus cable:
Terminal No. 26: DP (A) / PA (+) / FF (+) / MODBUS RS485 (A) / (PA, FF: with reverse polarity protection)
Terminal No. 27: DP (B) / PA (-) / FF (-) / MODBUS RS485 (B) / (PA, FF: with reverse polarity protection)
e Ground terminal for signal-cable shield / Fieldbus cable / RS485 line
f Service connector for connecting service interface FXA 193 (Fieldcheck, Tof Tool - Fieldtool Package)
g Signal cable: see Terminal assignment →Page 7 ff.
Cable for external termination (only for PROFIBUS DP with fixed assignment communication board):
Terminal No. 24: +5 V
Terminal No. 25: DGND
a
a
d
b
a
HART*
PROFIBUS DP**
FOUNDATION Fieldbus*
PROFIBUS PA*
MODBUS RS485**
27
25
23
21
2
1
26
24
22
20
L1 (L+)
N (L-)
–
–
–
+
+
+
PA(–)/FF(–)
27
25
23
21
2
1
26
24
22
20
L1 (L+)
N (L-)
–
–
–
+
+
+
A (RxD/TxD-N)
B (RxD/TxD-P)
PA(+)/FF(+)
d
c
e
b
–27
–25
–23
–21
+26
+24
+22
+20
N (L-) 2
L1 (L+)1
25
23
21
2
1
24
22
20
L1 (L+)
N (L-)
–
–
–
+
+
+
27
26
A (RxD/TxD-N)
B (RxD/TxD-P)
AB
C
g
d
b
g
d
c
e
b
d
c
e
b
g
d
c
e
b
g
PROFIBUS DP*
(d)
bd/(g)
f f
f f

Proline Promag 50P, 53P
Endress+Hauser 7
Terminal assignment, Promag 50
Terminal assignment, Promag 53
The inputs and outputs on the communication board can be either permanently assigned or variable, depending
on the version ordered (see table). Replacements for modules which are defective or which have to be replaced
can be ordered as accessories.
Terminal No. (inputs / outputs)
Order variant 20 (+) / 21 (–) 22 (+) / 23 (–) 24 (+) / 25 (–) 26 (+) / 27 (–)
50***-***********W−−−
Current output
HART
50***-***********A−−Frequency output Current output
HART
50***-***********DStatus input Status output Frequency output Current output
HART
50***-***********H–––
PROFIBUS PA
50***-***********J––
+5 V (external
termination)
PROFIBUS DP
50***-***********S––
Frequency output
Ex i, passive
Current output Ex i
active, HART
50***-***********T––
Frequency output
Ex i, passive
Current output Ex i
passive, HART
Ground connection, power supply →Page 6
Terminal No. (inputs / outputs)
Order variant 20 (+) / 21 (–) 22 (+) / 23 (–) 24 (+) / 25 (–) 26 (+) / 27 (–)
Fixed communication boards (fixed assignment)
53***-***********A−−Frequency output Current output
HART
53***-***********BRelay output 2 Relay output 1 Frequency output Current output
HART
53***-***********F–––
PROFIBUS PA
IS
53***-***********G–––
FOUNDATION
Fieldbus, IS
53***-***********H–––
PROFIBUS PA
53***-***********J–––
PROFIBUS DP
53***-***********K−−−
FOUNDATION
Fieldbus
53***-***********Q−−Status input MODBUS RS485
53***-***********S−−
Frequency output
IS
Current output IS
active, HART
53***-***********T−−
Frequency output
IS
Current output IS
passive, HART
Flexible communication boards
53***-***********CRelay output 2 Relay output 1 Frequency output Current output
HART
53***-***********DStatus input Relay output Frequency output Current output
HART
53***-***********LStatus input Relay output 2 Relay output 1 Current output
HART

Proline Promag 50P, 53P
8Endress+Hauser
Electrical connection remote
version
F06-5xFxxxxx-04-xx-xx-de-001
n.c. = isolated cable shields, not connected
Cable entry Power-supply and signal cables (inputs/outputs):
• Cable entry M20 x 1.5 (8 to 12 mm)
• Sensor cable entry for armoured cables M20 x 1.5 (9.5 to 16 mm)
• Threads for cable entries 1/2" NPT, G 1/2"
Connecting cable for remote version:
• Cable entry M20 x 1.5 (8 to 12 mm)
• Sensor cable entry for armoured cables M20 x 1.5 (9.5 to 16 mm)
• Threads for cable entries 1/2" NPT, G 1/2"
53***-***********MStatus input Frequency output Frequency output Current output
HART
53***-***********NCurrent output Frequency output Status input MODBUS RS485
53***-***********PCurrent output Frequency output Status input PROFIBUS DP
53***-***********VRelay output 2 Relay output 1 Status input PROFIBUS DP
53***-***********2Relay output Current output Frequency output Current output
HART
53***-***********4Current input Relay output Frequency output Current output
HART
53***-***********5Status input Current input Frequency output Current output
HART
53***-***********7Relay output 2 Relay output 1 Status input MODBUS RS485
Ground connection, power supply →Page 6
Terminal No. (inputs / outputs)
Order variant 20 (+) / 21 (–) 22 (+) / 23 (–) 24 (+) / 25 (–) 26 (+) / 27 (–)
65
5
7
7
84
4
37
37
36 42
42
41
41
2
1
brown
white
green
yellow
n.c. n.c.n.c.
S1 E1 E2 S2 GND ES
EPD
Coil circuit
Pipe
Electrode circuit
Meas. signal

Proline Promag 50P, 53P
Endress+Hauser 9
Cable specifications
remote version
Coil cable:
• 2 x 18 AWG (0.75 mm2) PVC cable with common, braided copper shield (Ø approx. 7 mm)
• Conductor resistance: ≤37 Ω/km
• Capacitance: core/core, shield grounded: ≤120 pF/m
• Permanent operating temperature: -4 to +180°F (–20 to +80°C)
• Cable cross-section: max. 16 AWG (2.5 mm2)
Signal cable:
• 3 x 20 AWG (0.38 mm2) PVC cable with common, braided copper shield (Ø approx. 0.28" / 7 mm) and
individually shielded cores
• With Empty Pipe Detection (EPD): 4 x 20 AWG (0.38 mm2) PVC cable with common, braided copper shield
(Ø approx. 0.28" / 7 mm) and individually shielded cores.
• Conductor resistance: ≤50 Ω/km
• Capacitance: core/shield: ≤420 pF/m
• Permanent operating temperature: -4 to +180°F (–20 to +80°C)
• Cable cross-section: max. 16 AWG (2.5 mm2)
A0003194
a = signal cable, b = coil current cable (cross-section: max. 16 AWG / 2.5 mm2)
1 = core, 2 = core insulation, 3 = core shield, 4 = core jacket, 5 = core strengthening,
6 = cable shield, 7 = outer jacket
Optionally, Endress+Hauser also supplies reinforced connecting cables with an additional, metal strenghtening
braid. We recommend such cables for the following cases:
• Cables laid underground
• Danger of rodent attack
• Device used with ingress protection NEMA 6P (IP 68)
Operation in zones of severe electrical interference:
The measuring device complies with the general safety requirements in accordance with EN 61010,
the EMC requirements of EN 61326/A1, and NAMUR recommendation NE 21.
Caution!
Grounding is by means of the ground terminals provided for that purpose inside the connection housing.
Keep the stripped and twisted lengths of cable shield to the terminals as short as possible.
1
2
3
4
5
6
7
ab

Proline Promag 50P, 53P
10 Endress+Hauser
Supply voltage 85 to 260 V AC, 45 to 65 Hz
20 to 55 V AC, 45 to 65 Hz
16 to 62 V DC
PROFIBUS PA and FOUNDATION Fieldbus
Non-hazardous: 9 to 32 V DC
Intrinsically safe: 9 to 24 V DC
Explosion proof: 9 to 32 V DC
Power consumption AC: <15 VA (including sensor)
DC: <15 W (including sensor)
Switch-on current:
• max. 13.5 A (< 50 ms) at 24 V DC
• max. 3 A (< 5 ms) at 260 V AC
Power supply failure Lasting min. 1 power cycle:
• EEPROM or T-DAT (Promag 53 only) retain the measuring system data in the event of a power supply failure
• S-DAT: exchangeable data storage chip which stores the data of the sensor (nominal diameter, serial number,
calibration factor, zero point, etc.)
Potential equalisation Standard case
Perfect measurement is only ensured when the medium and the sensor have the same electrical potential. Most
Promag sensors have a standard installed reference electrode which guarantees the required connection. This
usually means that additional potential matching measures are unnecessary.
Note!
For installation in metal pipes, it is advisable to connect the ground terminal of the transmitter housing to the
piping. Also, observe company-internal grounding guidelines.
A0004375
Caution!
For sensors without reference electrodes or without metal process terminals, carry out potential matching as
per the instructions for special cases described below. These special measures are particularly important when
standard grounding practice cannot be ensured or extremely strong matching currents are expected.

Proline Promag 50P, 53P
Endress+Hauser 11
Metal, ungrounded piping
In order to prevent outside influences on measurement, it is advisable to use ground cables to connect each
sensor flange to its corresponding pipe flange and ground the flanges. Connect the transmitter or sensor con-
nection housing, as applicable, to ground potential by means of the ground terminal provided for the purpose.
Caution!
Also, observe company-internal grounding guidelines.
Note!
The ground cable for flange-to-flange connections can be ordered separately as an accessory from
Endress+Hauser.
• Sensor sizes ≤12" (DN ≤ 300): The ground cable is in direct connection with the conductive flange coating
and is secured by the flange screws.
• Sensor sizes ≥ 14" (DN ≥ 350): The ground cable connects directly to the metal transport bracket.
A0004376
9 AWG (6 mm² Cu)
Pipe sizes Pipe sizes 12”14”

Proline Promag 50P, 53P
12 Endress+Hauser
Plastic pipes and isolating lined pipes
Normally, potential is matched using the reference electrodes in the measuring tube. However, in exceptional
cases it is possible that, due to the grounding plan of a system, large matching currents flow over the reference
electrodes. This can lead to destruction of the sensor, e.g. through electrochemical decomposition of the elec-
trodes. In such cases, e.g. for fibre-glass or PVC piping, it is recommended that you use additional ground disks
for potential matching.
When using ground disks, note the following points:
• Ground disks (1/2" to 12" / DN 15 to 300) can be ordered separately from Endress+Hauser as an accessory.
• Ground disks (incl. seals) increase the installation length. You can find the dimensions of ground disks on
Page 31.
Caution!
• Risk of damage from electrochemical corrosion. Note the electrochemical insulation rating, if the ground
disks and measuring electrodes are made of different materials.
• Also, observe company-internal grounding guidelines.
A0004377
Pipes with cathodic protection
In such cases, install the measuring instrument without potential in the piping:
• When installing the measuring device, make sure that there is an electrical connection between the two
piping runs (copper wire, 9 AWG / 6 mm2).
• Make sure that the installation materials do not establish a conductive connection to the measuring device
and that the installation materials withstand the tightening torques applied when the threaded fasteners are
tightened.
• Also comply with the regulations applicable to potential-free installation.
A0004378
1 = isolation transformer, 2 = electrically isolated
9 AWG (6 mm² Cu)
9 AWG Cu
1
22

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Endress+Hauser 13
Performance characteristics
Reference operating
conditions
To DIN EN 29104 and VDI/VDE 2641:
• Medium temperature: +28°C ± 2 K
• Ambient temperature: +22°C ± 2 K
• Warm-up period: 30 minutes
Installation:
• Inlet run >10 x Dia. (DN)
• Outlet run > 5 x Dia. (DN)
• Sensor and transmitter grounded.
• Sensor centered relative to the pipe.
Maximum measured error Promag 50:
Pulse output: ± 0.5% o.r. ± 1 mm/s (o.r. = of reading)
Current output: plus typically ± 5 µA
Promag 53:
Pulse output: ± 0.2% o.r. ± 2 mm/s (o.r. = of reading)
Current output: plus typically ± 5 µA
Supply voltage fluctuations have no effect within the specified range.
F06-5xxxxxxx-05-xx-xx-xx-000
Max. measured error in % of reading
Repeatability max. ± 0.1% o.r. ± 0.5 mm/s (o.r. = of reading)
Operating conditions
Installation conditions
Installation instructions Mounting location
Correct measuring is possible only if the pipe is full. Avoid the following locations:
• Highest point of a pipeline. Risk of air accumulating.
• Directly upstream of a free pipe outlet in a vertical pipe.
2.5
[%]
2.0
1.5
1.0
0.5
0
v in ft/s [m/s]
0.2 %
0.5 %
03
(1)
6
(2)
13
(4)
20
(6)
26
(8)
33
(10)

Proline Promag 50P, 53P
14 Endress+Hauser
F06-5xxxxxxx-11-00-00-xx-000
Installation of pumps
Do not install the sensor on the intake side of a pump. This precaution is to avoid low pressure and the conse-
quent risk of damage to the lining of the measuring tube. Information on the lining's resistance to partial vac-
uum can be found on Page 21.
It might be necessary to install pulse dampers in systems incorporating reciprocating, diaphragm or peristaltic
pumps. Information on the measuring system's resistance to vibration and shock can be found on Page 20.
F06-5xxxxxxx-11-00-00-xx-001
h 2 x Dia

Proline Promag 50P, 53P
Endress+Hauser 15
Partially filled pipes
Partially filled pipes with gradients necessitate a drain-type configuration. The Empty Pipe Detection (EPD)
function offers additional protection by detecting empty or partially filled pipes.
Caution!
Risk of solids accumulating. Do not install the sensor at the lowest point in the drain. It is advisable to install a
cleaning valve.
F06-5xxxxxxx-11-00-00-xx-002
Vertical pipes
Install a siphon (b) or a vent valve (a) downstream of the sensor in vertical pipes longer than 5 meters. This
precaution is to avoid low pressure and the consequent risk of damage to the lining of the measuring tube.
These measures also prevent the system losing prime, which could cause air inclusions. Information on the lin-
ing’s resistance to partial vacuum can be found on Page 21.
F06-5xxxxxxx-11-00-00-xx-003
a = vent valve, b = siphon
5 x Dia.
2 x Dia.
a
b
>15ft(5m)

Proline Promag 50P, 53P
16 Endress+Hauser
Orientation
An optimum orientation helps avoid gas and air accumulations and deposits in the measuring tube. Promag,
nevertheless, supplies a range of options and accessories for correct measuring of problematic mediums:
• Electrode Cleaning Circuitry (ECC) to remove electrically conductive deposits in the measuring tube, e.g. in
accretive mediums.
• Empty Pipe Detection (EPD) for recognition of partially filled measuring tubes, or for degassing mediums or
for applications with fluctuating process pressure.
Vertical orientation:
This orientation is ideal for self-emptying piping systems and for use in conjunction with Empty Pipe Detection.
F06-5xxxxxxx-11-00-00-xx-004
Horizontal orientation:
The measuring electrode-plane should be horizontal. This prevents brief insulation of the two electrodes by
entrained air bubbles.
Caution!
Empty Pipe Detection functions correctly only when the measuring device is installed horizontally and the
transmitter housing is facing upward. Otherwise there is no guarantee that Empty Pipe Detection will respond
if the measuring tube is only partially filled or empty.
F06-5xxxxxxx-11-00-xx-xx-000
1 = EPD electrode (Empty Pipe Detection)
2 = Measuring electrodes (signal detection)
3 = Reference electrode (potential equalisation)

Proline Promag 50P, 53P
Endress+Hauser 17
Vibrations
Secure the piping and the sensor if vibration is severe.
Caution!
It is advisable to install sensor and transmitter separately if vibration is excessively severe.
Information on resistance to vibration and shock can be found on Page 20.
F06-5xxxxxxx-11-00-00-xx-006
Foundations, supports
If the nominal diameter is ≥14" (DN ≥ 350), mount the transmitter on a foundation of adequate load-
bearing strength.
Caution!
Do not allow the casing to take the weight of the sensor. This would buckle the casing and
damage the internal magnetic coils.
F06-5xFxxxxx-11-05-xx-xx-000
>30ft(10m)

Proline Promag 50P, 53P
18 Endress+Hauser
Inlet and outlet runs If possible, install the sensor well clear of fittings such as valves, T-pieces, elbows, etc. Compliance with the
following requirements for the inlet and outlet runs is necessary in order to ensure measuring accuracy:
• Inlet run ≥ 5 x Dia
• Outlet run ≥2 x Dia
F06-5xxxxxxx-11-00-00-xx-005
Adapters Suitable adapters to DIN EN 545 (double-flange junction sections) can be used to install the sensor in larger-
diameter pipes. The resultant increase in the rate of flow improves measuring accuracy with very slow-moving
fluids.
The nomogram shown here can be used to calculate the pressure loss caused by reducers and expanders.
The nomogram applies only to fluids of viscosity similar to water:
1. Calculate the ratio of the diameters d/D.
2. From the nomogram read off the pressure loss as a function of flow velocity (downstream from the reduc-
tion) and the d/D ratio.
F06-5xFxxxxx-05-xx-xx-xx-000
5 x Dia. 2 x Dia.
D
d
max. 8 °
1.45 (100)
0.14 (10)
0.5
d/D
psi [mbar]
0.6 0.7 0.8 0.9
3 ft/s
1 m/s
6 ft/s
2 m/s
10 ft/s
3 m/s
13 ft/s
4 m/s
16 ft/s
5 m/s
20 ft/s
6 m/s
23 ft/s
7 m/s
26 ft/s
8 m/s
0.014 (1)

Proline Promag 50P, 53P
Endress+Hauser 19
Length of connecting cable Permissible cable length Lmax depends on the conductivity of the medium. A minimum conductivity of
20 µS/cm is required for measuring demineralized water.
F06-5xxxxxxx-05-xx-xx-xx-006
Gray shaded area = permissible range for medium conductivity
Lmax = length of connecting cable in [m]
Medium conductivity in [
µ S/cm]
In order to ensure measuring accuracy, moreover, comply with the following instructions when installing the
remote version:
• Secure the cable run or route the cable in a conduit. Movement of the cable can falsify the measuring signal,
particularly if the conductivity of the medium is low.
• Route the cable well clear of electrical machines and switching elements.
• Ensure potential equalisation between sensor and transmitter, if necessary.
Environment
Ambient temperature Transmitter:
• Standard: -5 to +140°F (–20 to +60°C)
• Optional: -40 to +140°F (–40 to +60°C)
Note!
At ambient temperatures below -5°F (–20°C) the readability of the display may be impaired.
Sensor:
• Flange material carbon steel: 14 to +140°F (–10 to +60°C)
• Flange material stainless steel: -40 to +140°F (–40 to +60°C)
Caution!
It is not allowed to use the device beyond the min. and max. lining specified temperature values
(→“Medium temperature range”).
Note the following points:
• Install the device at a shady location. Avoid direct sunlight, particularly in warm climatic regions.
• If both fluid and ambient temperatures are high, install the transmitter at a remote location from the sensor
(→“Medium temperature range”).
Note!
HE or Harsh Environment Protection for sensor:
Provides enchanced moisture ingress protection for humid ambient environments. Apply in applications with
severe temperature cycling and humid environments. Refer to ordering information, page 38.
Storage temperature • The storage temperature corresponds to the ambient temperature range of the transmitter and sensor
(see “Ambient temperature”).
• The measuring device must be protected against direct sunlight during storage in order to avoid unacceptably
high surface temperatures.
• Choose a storage location where moisture does not collect in the measuring device. This will help prevent
fungus and bacteria infestation which can damage the liner.
• Do not remove the protective plates or caps on the process connections until the device is ready to install.
This is particularly important in the case of sensors with PTFE linings.
200
100
5
33
(10)
330
(100)
650
(200)
ft
[m]
( S/cm]
L
max
L
max

Proline Promag 50P, 53P
20 Endress+Hauser
Degree of protection • Standard: NEMA 4X (IP 67) for transmitter and sensor
• Optional: NEMA 6P (IP 68) for sensor in remote version
Shock and vibration resistance Acceleration up to 2 g by analogy with IEC 60068-2-6
(high-temperature version: no data available)
Electromagnetic compatibility
(EMC)
To EN 61326/A1 and NAMUR recommendation NE 21
Process conditions
Medium temperature range The permissible medium temperature depends on the measuring-tube lining:
• -40 to +265°F (−40 to +130°C) for PTFE (1/2" to 24" / DN 15 to 600), for restrictions →refer to
diagrams
• -4 to + 355°F (−20 to +180°C for PFA (1" to 8" / DN 25 to 200), for restrictions →refer to diagrams
Compact version (PFA and PTFE lining)
TA= ambient temperature, TF= fluid temperature, HT = high-temperature version, with insulation
m= temperature range from 14 to -40°F (-10°C to -40°C) only applies for flanges made of stainless steel
A0002660
Remote version (PFA and PTFE lining)
TA= ambient temperature, TF= fluid temperature, HT = high-temperature version, with insulation
m= temperature range from 14 to -40°F (-10°C to -40°C) only applies for flanges made of stainless steel
A0002671
32
(0)
32 (0)
-4
(-20)
-40
(-40)
68
(20)
68 (20)
104 (40)
140 (60)
TA[°C]
[°C]
°F
°F
104
(40)
140
(60)
176
(80)
TF
212
(100)
248
(120)
284
(140)
320
(160)
356
(180)
PTFE
PFA
-4 (-20)
-40 (-40)
HT
m
PTFE
PFA
m
HT
32
(0)
32 (0)
-4
(-20)
-40
(-40)
68
(20)
68 (20)
104 (40)
140 (60)
TA[°C]
[°C]
°F
°F
104
(40)
140
(60)
176
(80)
TF
212
(100)
248
(120)
284
(140)
320
(160)
356
(180)
-4 (-20)
-40 (-40)