Endress+Hauser PROline promag 10 P Manual

Electromagnetic flow
measuring system
PROline promag 10 P
Flow measurement in chemical
or process applications
Technical
Information
TI 094D/24/ae
Application
Electromagnetic flowmeter for measuring
liquids with a minimum conductivity of
50 µS/cm, such as:
• Acids or alkalis
• Chemically loaded wastewater
• Paints
• Sewage sludge
Nominal diameters from 1” to 12”
Maximum fluid temperature:
PTFE: 265°F (130°C)
Sensor fitting lengths to ISO and DVGW
Features and benefits
• Ideal for simple measuring tasks -
current output for displaying the
current flow, pulse output for driving
an external totalizer or as status
output
• Guaranteed safety of application -
Promag 10 offers all basic functions
to guarantee a high degree of
reliability and measured value stability
• Optimum process control based on an
accuracy of ± 0.5%
• PTFE lining guarantees maximum
resistance in the case of aggressive
fluids and temperatures up to 265°F
• Used in difficult conditions (in shafts,
areas with vibration, or permanently
under water) - the sensor can be
installed separate from the transmitter
and is availalbe with NEMA 6P (IP 68)
protection.
• Service friendly - functional design
makes maintenance work easier -
HART®, Fieldtool and FieldCheck
provide support right down to device
verification without the need for sensor
removal.
The Power of Know How

PROline Promag 10 P
Endress+Hauser
Function and system design
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 amplifier. 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.
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
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:
• Promag 10 (user interface with push buttons for operation, unilluminated two-line
display)
Sensor:
• Promag P, 1” to 12” (DN 25 to 300)
Input
Flow rate (proportional to induced voltage)
Typically v = 0.033 to 33 ft/s (0.01 to 10 m/s) with the specified measuring accuracy
Over 1000 : 1
Measuring system
Measuring principle
Measured variable
Measuring range
Operable flow range
2
V
I
I

PROline Promag 10 P
Endress+Hauser 3
Current output:
Active, galvanically isolated, full scale value selectable temperature coefficient:
typically 1.1 µA/°F (2 µA/°C)
Resolution: 1.5 µA
Active: 4 to 20 mA, RL< 700Ω(HART®, RL≥250Ω)
Pulse output:
Passive, open collector, 30 VDC, 250 mA, galvanically isolted.
Alternatively configurable as:
- Pulse output:
Pulse value and pulse polarity selectable, maximum pulse width configurable
(5 to 2000 ms), pulse frequency maximum 100 Hz
or
- Status output:
Configurable e.g. for error messages, Empty Pipe Detection (EPD), recognition
of flow direction, limit values.
• Current output →failure response selectable
• Pulse output →failure response selectable
• Status output → “non-conductive” by fault or power supply failure
See “Output signal”
Switch point for low flow cutoff are selectable
All circuits for inputs, outputs, and power supply are galvanically isolated from each
other.
Output signal
Load
Signal on alarm
Low flow cutoff
Galvanic isolation
Output
Power supply
Electrical connection
measuring unit
a Cable for power supply: 85 to 250VAC,
20 to 28VAC, or 11 to 40 VDC
Terminal No. 1: L1 fo AC, L+ for DC
Terminal No. 2: N for AC, L- for DC
b Signal cable: terminals No. 24 to 27
c Cover of the electronics compartment
d Terminals for the power supply
e Terminals for the current output
f Service adapter for connecting service interface
FXA 193 (FieldCheck™, FieldTool™)
g Grounding terminal for signal-cable shield
Maximum cable size, 16 AWG (2.5 mm2)
Terminal No. (outputs)
Ordervariant 24 (+) / 25 (-) 26 (+) / 27 (-)
10***-*********APulse output Currentoutput
HART®
Pulseoutput(passsive)
Opencollector, maximum 30VDC / 250 mA, galvanicallyisolated,configurable
Operatingmodepulse: pulsefrequencymaximum100 Hz
Operaingmodestatus: yes,configurable
Currentoutputactive
Galvanically isolated, active: 4 to 20 mA, RL< 700Ω(HART®, RL≥250Ω)
Groundconnection,powersupply, see diagramabove.
aba
2127
–
25
–26 +
24
+L1
(L+) N
(L-)
c
b
f
a
b
gg
d
e

PROline Promag 10 P
Endress+Hauser
4
Electrical connection, remote
version
a Cover of the connection compartment
b Cover of the sensor connection housing
c Signalcable
d Coil current cable
n.c. Not connected, isolated cable shields
Supply voltage 85 to 250 VAC, 45 to 65 Hz
20 to 28 VAC, 45 to 65 Hz / 11 to 40 VDC
Power supply and signal cable (outputs):
• 1/2” NPT
Connecting cable for remote version:
• 1/2” NPT
Coil cable:
• 2 x 18 AWG (0.75 mm2) PVC cable with common, braided copper shield,
approximately 0.28” diameter (Ø approx. 7 mm)
• Conductor resistance: ≤0.011 Ω/ft (37 Ω/km)
• Capacitance: core/core, shield grounded: ≤36 pF/ft (120 pF/m)
• Permanent operating temperature: -5° to +180°F (–20 to +80°C)
Signal cable:
• 3 x 20 AWG (0.38 mm2) PVC cable with common, braided copper shield,
approximately 0.28” diameter (Ø approx. 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, approximately 0.28” diameter (Ø approx. 7 mm)
and individually shielded cores.
• Conductor resistance: ≤0.015 Ω/ft (50 Ω/km)
• Capacitance: core/shield: ≤128 pF/ft (420 pF/m)
• Permanent operating temperature: -5° to +180°F (-20 to +80 °C)
• Conductor cross-section: maximum 0.004 in2(2.5 mm2)
Cable entry
Cable specifications
65
5
7
7
84
4
37
37
36
Electrode circuit Coil circuit
42
42
41
41
E1 E2GND E
2
1
a
cd
b
S1 E1 E2 S2GNDE S
Esc
E
- +
n.c. n.c.n.c.
brn
wht
grn
yel
EPDPipe
Meas.signal

PROline Promag 10 P
Endress+Hauser 5
a = signal cable, b = coil current cable (maximum 16 AWG (2.5 mm2)
1 = Core 5 = Core strengthening
2 = Core insulation 6 = Cable shield
3 = Core shield 7 = Outer jacket
4 = Core jacket
Operation in areas of severe electrical interference:
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.
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.
85 to 250 VAC: < 12 VA (including sensor)
20 to 28 VAC: < 8 VA (including sensor)
11 to 40 VDC: < 6 W (including sensor)
Switch-on current:
• maximum 3.3 A (< 5 ms) at 24 VDC
• maximum 5.5 A (< 5 ms) at 28 VAC
• maximum 16 A (< 5 ms) at 250 VAC
Lasting minimum 1/2 power cycle:
EEPROM retain the measuring system data in the event of a power supply failure
Power consumption
Power supply failure
Potential equalization 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 potential matching. 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.
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.
1
2
3
4
5
6
7
ab

PROline Promag 10 P
Endress+Hauser
Metallic, ungrounded pipes
In order to avoid errors in measurement, use grounding cables to connect each
sensor flange to its corresponding pipe flange and ground the flanges. Connect the
transmitter or sensor connection housing, as applicable, to ground by means of the
grounding terminal provided for that purpose.
Note:
The grounding cable for flange-to-flange connections can be ordered separately as
an accessory from Endress+Hauser.
•Τhe grounding cable is in direct connection with the conductive flange
coating and is secured by the flange screws.
Potential equalization with equalizing currents in metallic, non-grounded piping systems
6
Plastic pipes and 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 fiberglass 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 can be ordered from Endress+Hauser as an accessory
• Ground disks (including seals) increase the installation length. Refer to the
disk dimensions.
Caution:
Risk of damage by electro-chemical corrosion. Note the electro-chemical series of
metals, if the grounding rings and measuring electrodes are made of different
materials.
9 AWG Cu
9 AWG Cu

PROline Promag 10 P
Endress+Hauser 7
Pipes with cathodic protection
If the medium cannot be grounded for process-related reasons, the measuring
device must be installed in such a way as to be potential-free:
• When installing the measuring device, make sure that there is an electrical
connection between the two piping runs, 9 AWG copper wire (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.
1 = isolating transformer, 2 = electrically insulated
Performance characteristics
To DIN 19200 and VDI/VDE 2641:
• Medium temperature: +28 °C ± 2 K
• Ambient temperature: +22 °C ± 2 K
• Warm-up time: 30 minutes
Installation:
• Inlet run >10 x Dia
•Outlet run > 5 x Dia
• Sensor and transmitter grounded.
• Sensor centered relative to the pipe.
Pulse output: ± 0.5% o.r. ± 0.02% of max. full scale (o.r. = of reading)
Current output: plus typically ± 5 µA
Supply-voltage fluctuations have no effect within the specified range.
Reference conditions
Measured error
Repeatability
Measured error in [%] of reading
Maximum ± 0.2% o.r. ± 0.02% of maximum full scale (o.r. = of reading)
22
1
9 AWG Cu
03
(1) 6
(2) 13
(4) 20 (6) 26
(8) 33
(10)
2.5
[%]
2.0
1.5
1.0
0.5
0
v ft/s (m/s)
0.5 %

PROline Promag 10 P
Endress+Hauser
8
Operating conditions: Installation
Installation instructions Mounting location
Correct measuring is possible only if the pipe is full. Avoid the following locations:
• Highest point in the run. Risk of air accumulating
• Directly upstream from an open pipe outlet in a down pipe
Installation of pumps
Do not install the sensor on the inlet side of a pump. This precaution is to avoid low
pressure and the consequent risk of damage to the lining of the measuring tube.
It might be necessary to install pulse dampers in systems incorporating reciprocat-
ing, diaphragm or peristaltic pumps. The sensor is shock and vibration resistant for
acceleration up to 2 g in accordance with IEC 68-2-6.
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:
To avoid the risk of solids accumulating, do not install the sensor at the lowest point
in the drain. It is advisable to install a cleaning valve.
5 x D
2 x D

PROline Promag 10 P
Endress+Hauser 9
Vertical pipes
Install a siphon (2) or a vent valve (1) downstream of the sensor in vertical pipes
longer than 15 feet (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.
1 = vent valve, 2 = siphon
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.
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.
1 = EPD electrode (Empty Pipe Detection)
2 = Measuring electrodes (signal detection)
3 = Reference electrode (potential equalization)
1
2
> 15 ft
(5 m)
1
2
2
3
Vertical orientation:
This orientation is ideal for self-emptying piping systems and for use in conjunction
with Empty Pipe Detection.

PROline Promag 10 P
Endress+Hauser
10
Vibrations
Secure the piping and the sensor if vibration is severe.
Caution:
It is advisable to install the sensor and transmitter separately if vibration is exces-
sively severe. The sensor is shock and vibration resistant for acceleration up to 2 g
in accordance with IEC 68-2-6.
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 pipe diameter
• Outlet run ≥2 x pipe diameter
Adapters With the help of the appropriate adapters (reducers and expanders) the sensor can
be mounted in a pipeline of a larger diameter. For slowly flowing fluids, the resulting
higher velocity increases the measuring accuracy.
> 30 ft
(10 m)
5 x D 2 x D