Endress+Hauser Micropilot S FMR540 Bedienungsanleitung

Products Solutions Services

TI00412F/00/EN/14.13

71229234

Technical Information

Micropilot S FMR540

Level-Radar

Level transmitter for continuous and non-contact

precision level measurement

For custody transfer and inventory control

applications with NMi- and PTB-approvals.

Application

The Micropilot S is used for highly accurate level measurement in storage tanks and

can be applied in custody transfer applications. It meets the relevant requirements

according to OIML R85 and API 3.1B.

Typical areas of application are:

• The Micropilot S with parabolic antenna is excellently suited for free space

applications up to 40 m (131 ft).

• The Micropilot S with horn antenna is suitable for free space applications that

disallow the use of a parabolic antenna due to tank/nozzle geometry.

The FMR540 with a DN200 (8") or DN250 (10") parabolic antenna offers high beam

focussing of 4.4° or 3.3° respectively, and is therefore ideally suited to applications with

nozzles situated close to the tank wall. The FMR540 with DN100 (4") horn antenna is

designed for all small nozzles sizes.

Your benefits

• Accuracy: better than 1 mm (0.04 in).

• National approvals (NMi, PTB) for custody transfer.

• Easy integration into tank gauging systems via the Tank Side Monitor NRF590.

• Low-cost, easy installation via 4-wire cable with HART and 24 V DC (intrinsically

safe).

• Low cost, low weight universal flanges.

• Alignment device to compensate any flange inclination.

• Easy on-site operation via menu-driven alphanumeric display.

• Easy commissioning, documentation and maintenance/diagnostics via operating

software (FieldCare).

• HART communication.

Micropilot S FMR540

Endress+Hauser 13

Performance characteristics

For accuracy data for devices suitable for custody transfer measurement in accordance with OIML

R85, see Ambient temperature range. oä22.

Reference operating

conditions

According to OIML R85:

• Temperature = -25 °C to +55 °C (-13 °F to +131 °F)

• Atmospheric pressure

• Relative humidity (air) = 60 % ±15 %

• Medium properties: e.g. medium with good reflectivity and calm surface.

• Tank diameter: signal beam hits the tank wall only at one side.

• No major interference reflections inside the signal beam.

Maximum measured error Absolute accuracy better than ±1 mm (0.04 in) (better than 1/16")

The Micropilot S versions for free space applications have a typical accuracy of <1.0 mm (2 sigma

value). Depending on national calibration regulations, the permitted errors after the device has

been installed on the tank are ±3 mm (0.12 in), (OIML, API)...

Resolution Digital 0.1 mm / analogue: 0.03 % of measuring range

Settling time Typical: 15 sec

Hysteresis 0.1 mm

Non-repeatability 0.1 mm

Reaction time The reaction time depends on the parameter settings (min. 1 s).

In case of fast level changes, the device needs the reaction time to indicate the new value.

Long-term drift The long-term drift is within the specified accuracy.

Influence of ambient

temperature

Current output (additional error, in reference to the span of 16 mA):

•Zero point (4 mA)

average TK: 0.025 %/10 K, max. 0.291 % over the entire temperature range -40 °C to +80 °C

(-40 °F to 176 °F)

•Span (20 mA)

average TK: 0.07 %/10 K, max. 0.824 % over the entire temperature range -40 °C to +80 °C

(-40 °F to 176 °F)

Proof of accuracy of custody

transfer versions

The degree of accuracy is confirmed by a calibration certificate that records the absolute and relative

error at 10 measuring points during the final test. A Laser Interferometer (Jenaer Messtechnik ZLM

500) with an absolute accuracy of 0.1 mm is used as a reference for free space measurements. In

addition, certificates confirming initial verification are available on request for all radar devices in the

FMR540 series.

Maximum fill speed By the first pass trough of measuring range: 100 mm/min., thereafter unlimited.

Software reliability The software used in the radar devices FMR540 fulfills the requirements of OIML R85. This

particularly includes:

• Cyclical testing of data consistency

• Non-volatile memory

• Segmented data storage

The radar devices Micropilot S continuously monitor the compliance with accuracy requirements for

custody transfer measurements according to OIML R85. If the accuracy cannot be maintained, a

specific alarm is generated on the local display and via the digital communication (oä34).

Micropilot S FMR540

14 Endress+Hauser

Inventory control versions All device versions can be delivered as "Inventory Control" versions with reduced accuracy (3 mm [0.12

in]) under reference conditions. No calibration certificate or type approval is supplied with these

versions. The "Inventory Control" versions are selected by specifying Version "R - Not selected; Inventory

control version" in the Product Configurator under "Weight + measure approval".

Micropilot S FMR540

Endress+Hauser 15

Installation

Installation conditions

Installation instructions With a DN100 (4") horn, this antenna is suitable for free space applications up to a measuring distance

of 20 m/30 m (66 ft/98 ft), (depending on dielectric constant). With the narrow beam angle (8 deg),

this horn antenna is suitable for closer to tank wall application ("Beam angle", oä20). When

installing, it is essential that the horn extends below the nozzle ("Installation on tank", oä17). If

condensation occurs, try using the parabolic antenna, or contact your Endress+Hauser sales center.

The parabolic antenna offers the smallest beam angle (3.3 deg) for free space applications. It also

offers the longest possible measuring distance of 40 m (131 ft) (dielectric constant > 1.8). It is ideal

for applications close to the tank walls.

• Recommended distance (1) from tank wall to

center of nozzle:

minimum as specified in table, "Beam angle",

oä20.

• Not in the centre (3), interference can cause

signal loss.

• Not above the fill stream (4).

• It is recommended to use a weather protection

cover (2) in order to protect the transmitter

from direct sun or rain.

Assembly and disassembly is simply done by

means of a tension clamp ("Accessories",

oä38).

A0021541

234

Tank installations

• Avoid any installations (1), like limit switches,

temperature sensors, etc., inside the signal

beam ("Beam angle", oä20).

• It is essential that HiHi alarm is below the

blocking distance (BD) and the safety distance

(SD).

• Symmetrical installations (2), e.g. vacuum

rings, heating coils, baffles, etc., can also

interfere with the measurement.

• Metallic screens (3) mounted at an angle

disperse the radar signals and can therefore

reduce interference echoes.

For more information, please contact your

Endress+Hauser sales center.

A0020826

Micropilot S FMR540

16 Endress+Hauser

Optimisation options

• Antenna size: the bigger the antenna, the smaller the beam angle, the less interference echoes.

• Mapping: the measurement can be optimized by means of electronic suppression of interference

echoes.

• Antenna alignment: "Optimum mounting position", oä17.

• Stilling well: a stilling well can always be used to avoid interference. The FMR532 with planar

antenna is recommended for stilling wells with a diameter DN150 (6") and larger.

Measuring conditions • The measuring range begins, where the beam hits the tank bottom. Particularly with dish bottoms

or conical outlets the level cannot be detected below this point.

• Depending on its consistency, foam can either absorb microwaves or reflect them off its surface.

Measurement is possible under certain conditions.

• The smallest possible measuring range B(see Fig.) depends on the antenna version.

• Tank diameter and height should be at least dimensioned such that a reflection of the radar signal

on both sides of the tank can be avoided.

• In case of media with a low dielectric constant (groups A and B), the tank bottom can be visible

through the medium at low levels (low height C). Reduced accuracy has to be expected in this range.

If this is not acceptable, we recommend positioning the zero point at a distance C(see Fig.) above

the tank bottom in these applications.

• In principle, it is possible to measure up to the tip of the antenna with the FMR540. However, due to

corrosion and build-up, the end of the measuring range should not be any closer than A(see Fig.).

A0020737

Behaviour if measuring range is exceeded

The behaviour in case of the measuring range being exceeded can be freely set:

The default setting is a current of 22 mA and the generation of a digital warning (E651).

1) All values are based on reference conditions.

A [m (ft)] B [m (ft)] C [mm (in)]

FMR540 (without extension)2)

2) The length of a sensor extension shall be added to "A" when selecting the extension option.

0.6 (2.0) > 0.5 (1.6) > 300 (11.8)

100%

Micropilot S FMR540

Endress+Hauser 17

Installation on tank Optimum mounting position

A0020810

1 Marking on sensor

2Markingonflange

90°

Standard installation with horn antenna

• Follow installation instructions (oä15).

• Marker must be aligned towards tank wall.

The marker is located clearly visible on the

sensor neck or the flange.

• After mounting, the housing can be turned 350°

in order to simplify access to the display and the

terminal compartment.

• Adjust vertical sensor alignment in case the

flange is not parallel to the face is medium

surface.

• The horn antenna should protrude from the

nozzle. If necessary, choose version with

antenna extension (oä23).

For applications with higher nozzles, please

contact your Endress+Hauser sales center.

• The horn antenna should be installed with 3°

inclination towards the tank center. To avoid

interference reflections or for optimum

alignment within the tank, the FMR540 with

optional alignment device can be swiveled by

15° in all directions.

For more information, please see Operating

Instructions KA00274F/00/EN.

If you have any questions regarding

commissioning, please contact your

Endress+Hauser sales center.

A0020809

øD

Antenna size 100 mm (4")

D (mm[in]) 95 (3.74)

H (mm [in])

(without antenna extension) < 430 (16.9)

Micropilot S FMR540

18 Endress+Hauser

Standard installation with parabolic antenna

• Follow installation instructions (oä15).

• Marker is aligned towards tank wall. The marker is located clearly visible on the sensor neck or the

flange.

• After mounting, the housing can be turned 350° in order to simplify access to the display and the

terminal compartment.

• Ideally, the parabolic antenna should extend completely out of the nozzle (A).

Particularly when using the alignment device, please ensure that the parabolic reflector is protruding

from the nozzle/roof so as not to inhibit alignment.

For applications with higher nozzles, install the parabolic antenna completely in the nozzle

(B), including RF waveguide.

• The parabolic antenna should be installed vertically. To avoid interference reflections or for optimum

alignment within the tank, the FMR540 with optional alignment device can be swiveled by 15° in all

directions. For more information, please see Operating Instructions KA00274F/00/EN.

If you have any questions regarding commissioning, please contact your Endress+Hauser sales

center.

A0020808

A Antenna is extending out of the nozzle

B Antenna installation in the nozzle

1 Installation perpendicular to surface of medium

aObservedistance

øD

Antenna size 200 mm (8") 250 mm (10")

D (mm [in]) 173 (6.81) 236 (9.29)

H (mm [in])

(without antenna extension) < 200 (7.87) < 200 (7.87)

Micropilot S FMR540

Endress+Hauser 19

Alignment device Optimum mounting position

The Micropilot S should be installed at right angles to the surface of the medium for optimum

measuring performance of ±1 mm (0.04 in). Using the alignment device it is possible to tilt the

antenna axis by up to 15° in all directions. The alignment device is used for the optimum alignment of

the radar beam to the liquid surface.

The Sensor should be positioned vertical to the liquid surface in inclination of 0° for Parabolic Antenna

and up to 3° for Horn Antenna.

A0020807

AMedium

To align the antenna as precisely as possible, it is recommended to use the Level Tool, which is

available as an accessory. For more information, please see Operating Instructions KA00274F/00/EN.

In case of custody Application, the screws must be locked with wires.

±15°

90 °

Micropilot S FMR540

20 Endress+Hauser

Beam angle The beam angle is defined as the angle Dwhere the energy density of the radar waves reaches half the

value of the maximum energy density (3dB-width). Microwaves are also emitted outside the signal

beam and can be reflected off interfering installations. The beam diameter Wis a function of antenna

type (beam angle

) and distance D. The recommended distance to the tank wall is indicated in the

tables below. It is strongly recommended to avoid any mechanical obstacles within the highlighted

area.

HINWEIS

Measuring error due to multiple echoes!

 Ensure that only one tank wall (not two tank walls) is hit directly by the radar beam!

Horn antenna

A0020805

Antenna size 100 mm (4")

Beam angle (

)8°

Distance (D)

(m [ft])

Beam

diameter (W)

(m [ft])

Recommended distance to wall

(m [ft])

0° tilting 3° tilting

5 (16) 0.70 (2.3) 0.89 (2.9) 0.62 (2.0)

10 (33) 1.40 (4.6) 1.77 (5.8) 1.23 (4.0)

15 (49) 2.10 (6.9) 2.65 (8.7) 1.85 (6.1)

20 (66) 2.80 (9.2) 3.53 (12) 2.46 (8.1)

25 (82) 3.50 (11) 4.41 (14) 3.07 (10)

30 (98) 4.20 (14) 5.29 (17) 3.69 (12)

Parabolic antenna

A0020806

Antenna size 200 mm (8") 250 mm (10")

Beam angle (

)4.4° 3.3°

Distance (D)

(m [ft])

Recommended distance to wall

(m [ft])

5 (16) 0.35 (1.1) 0.2 (0.7)

10 (33) 0.70 (2.3) 0.5 (1.6)

15 (49) 1.05 (3.4) 0.75 (2.5)

20 (66) 1.40 (4.6) 1.05 (3.4)

25 (82) 1.75 (5.7) 1.3 (4.3)

30 (98) 2.10 (6.9) 1.6 (5.2)

35 (115) 2.45 (8.0) 1.85 (6.1)

40 (131) 2.80 (9.2) 2.10 (6.9)

Micropilot S FMR540

Endress+Hauser 21

Integrated air purge

connection

In some applications, the integrated purge air

connection can prevent clogging of the antenna.

• Permanent operation:

recommended pressure range for purge air: 1.2

to 1.5 bar (18 to 22.5 psi) abs.

• Pulsed operation:

max. pressure of purge air: 6 bar (90 psi) abs.

HINWEIS

Moisture or humidity can accumulate and

result in incorrect measurement results!

 Use dry purge air!

A0020799

1 Purge air connection G 3/4"

(max. torque 3.5 Nm (2.581 lbf ft)

MadeinGermanyMaulburg

IP 65

Messbereich

Measuringrange

U16...36VDC

4...20mA

max.20 m

T>7

0°C:

At>85°C

OrderCode:

Ser.-No.:

OrderCode:

Ser.-No.:

SS+HAUSER

OPILOT FMR

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