BM 70 P | User manual | KROHNE BM 700, BM 70 A, P Level Radar Produktdetails

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7.02318.22.00
CMD
Level-Radar
BM 700, BM 70 A, BM 70 P
Non-contact level gauging
using electromagnetic waves
Easy to program
in the field or via PC
Standard
HART® output
Microwave frequency
~ 10 GHz
For use in
process tanks
Electromagnetic flowmeters
Variable area flowmeters
Mass flowmeters
Ultrasonic flowmeters
Vortex flowmeters
Flow controllers
Level measuring instruments
Pressure and temperature
Heat metering
Communications technology
Switches, counters, displays and recorders
Engineering systems & solutions
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Level-Radar
BM 700, BM 70 A, BM 70 P
Non-contact level gauging
using electromagnetic waves
The BM 70 line comprises high-quality measuring instruments to performe a wide range
of measuring tasks.
The low-cost BM 700 is ideal for storage
tanks, still wells and reference vessels.
The BM 70 A supplies
reliable measurements in tanks with
agitators or other internals.
BM 700
The BM 70 P is the high-precision
version with a measuring accuracy of
± 1 mm.
BM 70 A / BM 70 P
Selection Sheet
Contents
Product selection . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Modularity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Operating principle . . . . . . . . . . . . . . . . . . . . . . . . 6
Quality of measurement . . . . . . . . . . . . . . . . . . 7
Technical data BM 700 . . . . . . . . . . . . . . . . . . . 10
Technical data BM 70 A . . . . . . . . . . . . . . . . . . 14
Technical data BM 70 P . . . . . . . . . . . . . . . . . . 18
Communications systems . . . . . . . . . . . . . . . . . 22
Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Application condition
Liquids / liquid gases
Pastes / sludges
Solids / particulate materials
Measuring range ≤ 20 m
Measuring range 20 – 35 m
Measuring range 35 – 100 m
BM 700
—
—
—
BM 70 A
K
K
BM 70 P
—
—
Storage tanks
Still wells / reference vessels
Process tanks with slightly moving surface
Difficult process tanks (e.g. agitator)
Large or numerous internals in the tank
—
—
K
K
—
K
High accuracy (± 1 mm/0.04”)
Excellent repeatability
Current output 4 – 20 mA HART®
Intrinsically safe outputs
Bus connection (RS485, PROFIBUS-PA)
—
—
—
—
—
—
suitable
2
BM 700, BM 70 A, BM 70 P
— not suitable
K : contact KROHNE
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BM 700, 70 A, 70 P
Flexible through modularity
Level-Radar measuring system
Converter for BM 70 A/P
The modular design allows us to provide the optimum solution
for your measuring problem. The system consists of
The modularity makes it possible to retrofit the converter to a communication system (e.g. PROFIBUS-PA) in place of a 4 – 20 mA current
output. The process need not be interrupted.
converter,
flange,
antenna.
Flange and antenna are available in various versions,
sizes and materials.
BM 70 A/P
BM 700
Converter
HT-Distance piece
Wave-Stick
for still-pipe
Distance piece
Wave-Stick
Horn antenna
Horn antenna
Most frequently used antenna, available in
different metals.
Application in reactors, process and storage
vessels as well as waste water tanks and still
wells.
High-temperature (HT) distance piece
Is mounted between flange and converter to
protect the electronics of the converter against
high temperature.
Wave-Guide
Wave-Guide
A tubular antenna extension is passed through
the product and down to the tank bottom. The
antenna extension interconnects with the tank,
and for this purpose a vent hole is featured in
the top part of the extension. Suitable for
spherical tanks, horizontal and vertical vessels
containing relatively clean products, or
liquefied gases.
Wave-Stick
The dielectric rod antenna and the sealing
face of the connecting flange are made of PTFE.
Resistant to high-temperature steam, CIP/SIP
capability up to 160°C (320°F).
Antenna extension
Straight, rectangular or S-shaped extensions
are available for specific and particularly difficult application conditions. Such extensions
are used in cases where the antenna is exposed to particularly high temperatures and
where there are problems of space.
Antenna purging system (w/o figure)
The purging system is used for cleaning,
heating and cooling the antenna. The purging
medium is introduced through the connecting
flange. Application in the petrochemical,
chemical and pharmaceutical industries under
conditions of very low and very high temperatures and with products tending to form
deposits and incrustations.
Particularly suitable for applications in the
food and beverage, waste water, chemical and
pharmaceutical industries.
BM 700, BM 70 A, BM 70 P
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BM 700, 70 A, 70 P
Typical applications
BM 70 Horn antenna mounted on a
process tank and on a side vessel
BM 70 Wave-Stick mounted on a process
tank for the food and beverage industry
BM 70 Still-Pipe / BM 70 Wave-Guide
on a liquefied-gas tank
BM 70 Still-Pipe
with ball valve
BM 70 Wave-Guide
ball valve
Foam
Liquid
Liquid gas
BM 70 Horn antenna
for particulate materials
BM 70 Heating system
for condensing products
BM 70 Horn antenna / BM 70 Still-Pipe
on a storage tank
BM 70 Horn antenna
Vapour
Foam
Liquid
BM 70 Purging system
for cleaning, heating or cooling the antenna
BM 70 with curved antenna extensions
for difficult applications
Vapour
Internals
Foam
Liquid
Foam
Liquid
4
BM 700, BM 70 A, BM 70 P
BM 70 Still-Pipe
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BM 700, 70 A, 70 P
Use in storage tanks
Product
Tank atmosphere
Product surface
Temperature
Pressure
paraffin
condensation
smooth
70°C (158°F)
atmospheric
Use in process tanks
Product
Tank atmosphere
Product surface
Temperature
Pressure
alcohol
condensation
turbulent
90°C (194°F)
2 bar (29 psig)
Encrustations on the antenna
Product
Tank atmosphere
Product surface
Temperature
Pressure
caustic soda
with bauxite sludge
dust, condensation
foam
50°C (122°F)
atmospheric
BM 700, BM 70 A, BM 70 P
5
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BM 700, 70 A, 70 P
Operating principle
A radar signal is emitted via an antenna, reflected on the measuring
surface and received after a delay time t.
3) differential frequency
formed
f
FMCW: Frequency Modulated Continuous Wave
The FMCW-radar uses a high frequency signal sweep from
8.5–9.9 GHz (1). The signal is emitted, reflected from the product
surface and received after a delay (2). For further signal processing the
difference ∆f is calculated from the actual transmit frequency and the
receive frequency (3). The difference is directly proportional to the
distance i.e. a large frequency difference corresponds to a large
distance and vice versa.
1) radar frequency
linearly changed
∆f
antenna
reflector =
product surface
2) delay due to wave
propagation
The frequency difference is transformed via a Fourier transformation
(FFT) into a frequency spectrum and then the distance is calculated
from the spectrum.
Linearity of frequency sweeps
The measuring accuracy of a FMCW radar is determined from the
linearity of the frequency sweep and its reproducibility. Linearity is
corrected via a reference measurement of the oscillator characteristics.
Non-linearity is corrected up to 98% (BM 700/BM 70 A)
Direct frequency regulation is necessary with the BM 70 P
device because of the higher demand on measuring accuracy.
With the PLL technology (Phase Locked Loop) the signal frequency is
directly recorded as digital data and the transmitter oscillator locks
automatically on the right frequency.
non-linear sweep
∆f
Advantages of FMCW
Compared to the simple pulse radar technology, the use of FMCW
radar offers the following advantages:
Higher band-width of the microwave signal → better reflection
separation → reliable reduction of noise
Higher transmitting frequency → small angle → fewer interference
reflections
Higher transmitting frequency → smaller antenna diameter for
same measuring range
f stop
linear sweep
f Start
6
BM 700, BM 70 A, BM 70 P
t
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BM 70 A
Quality of measurement
Reflections caused by struts, weld seams and tank internals are identified as “fixed targets” and can be blanked out, provided the useful signal
reflected from the product surface is greater than the interference reflection. Sporadic interference signals caused by agitator blades, falling
deposits or sidestreams of the main filling flow are blanked out by the microprocessor-controlled signal evaluation.
Empty-tank spectrum of a process tank with agitators
Interference signals and fixed targets blanked out
BM 70 A
Flange
fitting
BM 70 A
Flange
fitting
Strength of signal
Strength of signal
max.
max.
saved
data
Internals
Internals
Extreme
interference
reflection
Extreme
interference
reflection
dynamic
evaluation
window
Interference
signals
(suppressed)
Interference
signals
level
signal
Heating coil
Heating coil
Agitator
Agitator
0 ft (m)
0 ft (m)
Software is provided for tracking measured values. A “plausibility window” in which the next measured value is expected is defined by the preceding measurements in conjunction with the programmed tracking speed. Measured values not located in this “distance window” are blanked out.
Measured-value plausibility check
Strength of signal
Strength of signal
BM 70 A
Flange
fitting
BM 70 A
Flange
fitting
max.
max.
Internals
Internals
}
Extreme
interference
reflection
sporadic
interference
level
signal
Heating coil
}
level
signal
Extreme
interference
reflection
x
}
plausibility
window
implausible
signal
(multiple
reflections)
plausibility
Heating coil
window
Agitator
Agitator
0 ft (m)
0 ft (m)
}
useful signal window
blanked out
BM 700, BM 70 A, BM 70 P
7
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Level-Radar
BM 700
For standard applications on storage tanks,
in still wells and reference vessels,
high performance and low price
Local display
optional
Connections for
food industry available
Various antenna types
Measuring range
up to 20 m
Electromagnetic flowmeters
Variable area flowmeters
Mass flowmeters
Ultrasonic flowmeters
Vortex flowmeters
Flow controllers
Level measuring instruments
Pressure and temperature
Heat metering
Communications technology
Switches, counters, displays and recorders
Engineering systems & solutions
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BM 700
70 A
Responsibility for suitability and intended use of our instruments rests solely with the purchaser.
Technical data
1 Application range
distance, level, volume measurement of liquids, pastes, slurries, in storage tanks,
still wells or reference vessels
2 Operating mode/system structure
FMCW radar in the X band (8.5-9.9 GHz) with digital signal processing;
compact device, modular design
3 Input
Measured quantities
Primary quantity
Derived quantities
Measuring range
Min. tank height
Max. measuring range
Block distance
Rate of change in level
4 Output
Ex-e current output HART®
0.5 m (1.6 ft)
20 m (65.6 ft)
min. 0.2 – 0.5 m (0.7 – 1.6 ft)
≤ 10 m/min (≤ 33 ft/min)
Failure signal
Type
avtive (current source); Ex-e
Current range
4 – 20 mA (error: 22 mA)
Accuracy/linearity
0.15 % (rel. 20 mA; 20°C/68°F)
Temperature drift
≤ 100 ppm/K (typically 50 ppm/K)
Load
≤ 350 Ω
Current output: error signal 22 mA, plain text in local display
5 Measuring accuracy
Error of measurement
Repeatability
Measured-value resolution
Ambient temperature effect
min. ±1 cm (0.4”) or ± 0.3%
≤ 0.5 x error of measurement
1 mm (0.04”)
no temperature effect on measured value (see output)
6 Field service conditions
6.1 Installation conditions
6.2 Ambient conditions
Hazardous locations
Ambient temperature at signal converter
Flange temperature
Version
V96 with horn antenna / Wave-guide with
Gasket K4079
Gasket K2035
Gasket K6375 / K1091
Gasket Viton / FEP
Gasket Silicone / FEP
LP Flange system with
horn antenna / Wave-Guide
Wave-Stick
PTFE with flange plate
PTFE w/o flange plate
PP w/o flange plate
Environment class
Protection category EN 60529/IEC 529
Shock resistance
Vibration endurance limit
EMC
10
distance
level, volume
BM 700, BM 70 A, BM 70 P
avoid interference reflections and multiple reflections
Zone 0, 1, 2; IIC/IIB, T1 –T6
–20 … +55°C (–4 … +131°F); functional range: –40 … +70°C (–40 … +158°F)
Min. flange temperature
Standard version
Special version
Max. flange temperature
w/o HTwith HTdistance piece
distance piece
–20°C (–5°F)
–20°C (–5°F)
–20°C (–5°F)
–15°C (+5°F)
–30°C (–20°F)
–
–
–
–
–60°C (–76°F)
on request
+130°C (+266°F)
+130°C (+266°F)
+130°C (+266°F)
+130°C (+266°F)
+130°C (+266°F)
+250°C (+482°F)*
+210°C (+410°F)
+250°C (+482°F)
+200°C (+392°F)
+200°C (+392°F)
–20°C (–4°F)
–
+130°C (+266°F)
–
–40°C (–40°F)
–
+130°C (+266°F)** +150°C (+302°F)**
–20°C (–4°F)
–
+130°C (+266°F)
+150°C (+302°F)**
–20°C (–4°F)
–
+100°C (+212°F)
–
* Safety limit 280°C (536°F)
** pressure dependant, see below
Locations exposed direct to open-air climate, D1 Severity in conformity with EN 60654-1
(signal converter) IP 66 / IP 67
Impact test to EN 61010, Sect. 8.2 with 0.5 J energy; drop test to prEN 50178
IEC 68-2-6 and prEN 50178 (10-57 Hz: 0.075 mm / 57-150 Hz: 1 g)
EN 50081-1, EN 50082-2; NAMUR Recommendation
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BM 70
700A
6.3 Product conditions
Physical properties
Relative permittivity
Product limitations
Process temperature
Operating pressure
Horn antenne/Wave-Guide
Wave-Stick
No effect on measurement results; for reliable measurements,
the relative permittivity should have the following minimum values:
εr ≥ 1.5; εr < 3: still well recommended; Wave-Stick immersed: εr ≥ 4
liquid ammonia (NH3); liquid hydrogen (H2); liquid helium (He)
Unrestricted (but be aware of ambient and flange temperatures!)
dependent on flange size and pressure rating (see table)
Standard: up to 40 bar (580 psig) (higher on request)
w/o flange plate: ≤ 2 bar/29 psig
with flange plate: see diagram
+ 16
(+ 232)
46 – 0.3 T ° C bar
(740 – 2.4 T ° F psig)
Pressure
[bar]
(psig)
+1
(+ 14.5)
–1
(– 14.5)
– 20 Temperature T in °C (°F)
(– 4)
7 Component parts
Dimensions and weights
Materials
Signal converter housing
Flange system, antenna,
antenna extension
Gaskets
Wave-Stick
Process connection
Horn antenna/Wave-Guide
Wave-Stick
Dairy screw connection
Tri-Clamp connection
Electrical connection
8 Local operator interface
Key pad
Magnetic sensors
Local display
Operator interface language
Units of measurement
9 Power supply
24 V DC/AC
115/230 V AC
Power consumption
+ 100
(+ 212)
+ 150
(+ 302)
see “Dimensions and weights”
Aluminium with electrostatic powder coating: sight window (optional): glass
Stainless steel 1.4571 (316 Ti) or 1.4435 (316 L), Hastelloy C4 or B2, titanium, tantalum
(information on other materials available on request)
Kalrez 4079, 2035, 6375; Viton (FPM);
FEP-coated (basically, in all versions, PTFE is also in contact with the product)
only PP or PTFE in contact with the product; flanges made of stainless steel 1.4571 (316 Ti)
DIN 2501/DIN 2526, Form C
DN 50 – DN 200, PN 6 – PN 64
ASME B 16.5
2”– 8”, 150/300 lb/RF
DIN 2501/DIN 2526, Form C
DN 50 – 150
ASME B 16.5
G 11/2, 2”– 6”
DIN 11851
DN 50, DN 65, DN 80
SMS 1145
51 mm, 63 mm, 76 mm
ISO 2852
2”– 4”
Cable entries
3 x M 25 x 1.5
Terminals
0.5 – 2.5 mm2 (solid conductor: max. 4 mm2)
PE or FE and PA
U-clamp terminal (max. 4 mm 2)
Shielding when cable for current output is >100 m (> 328 ft)
3 keys
Operation with bar magnet without opening the housing
2-line illuminated LCD + 6 status markers
English, German, French, Spanish, Portuguese, Swedish, Italian
Lengths: m, cm, mm, inch, ft, %,
Volume: m3, Liter, US Gal, GB Gal, ft3, bbl, %
Conversion unit: any text
19.2 – 28.8 V DC or 20.4 – 26.4 V AC (45 – 66 Hz)
(external power supply unit)
typically 6 W / 10 VA
BM 700, BM 70 A, BM 70 P
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BM 700
70 A
Dimensions and weights
BM 700 Horn antenna
High-temperature version
174 (6.85’’)
203 (7.99’’)
225 (.86’’)
116 (4.57’’)
120 (4.72’’)
f
410 (16.14’’)
290 (11.42’’)
170 (6.69’’)
a
Flange connections to:
DIN 2501 (= BS 4504) DN 50 – DN 200 / PN 6 – PN 64
ASME B 16.5 / 2” – 8” / Class 150/300 lb/RF
Nominal size to
DN
80
100
150
200
ASME
3”
4”
6”
8”
Antenna
Type
1
2
3
4
Dimensions in mm (inches)
SS 1.4571
or SS 316 Ti
dia. a
f
80 (3.15) 110 (4.33)
100 (3.94) 148 (5.83)
140 (5.51) 223 (8.78)
200 (7.87) 335 (13.19)
approx. weight
Hastelloy C4
f
145 (5.71)
177 (6.97)
250 (9.84)
360 (14.17)
Titanium,
tantalum
f
110 (4.33)
146 (5.75)
220 (8.66)
332 (13.07)
kg (lb)
17 (37.48)
18 (39.68)
23 (50.71)
30 (66.14)
Subject to change without notice
BM 700 Wave-Stick
Weight DN 50: approx. 12.5 kg (27.56 lb)
BM 700 Wave-Guide
Weight DN 50; 1 m: approx.: 13.5 kg (29.76 lb)
174 (6.85’’)
174 (6.85’’)
265 (10.43’’)
290 (11.42’’)
270 (10.63’’)
174 (6.85’’)
BM 700 Wave-Stick
(Dairy screw connection to DIN 11851)
ø 25
ø 25
Dimensions in mm (inches)
12
BM 700, BM 70 A, BM 70 P
(dia. 0.98’’)
ø 30
(dia. 1.18’’)
270 ( 10.63’’)
270 ( 10.63’’)
(dia. 0.98’’)
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Level-Radar
BM 70 A
Reliable measurement on tanks with
agitators or other internals,
also in extreme process conditions
Further interfaces:
RS 485, PROFIBUS-PA,
Fieldbus Foundation
Max. allowable operating
pressure up to
400 bar (5800 psig)
Rectangular and S-shaped
antenna extensions
Measuring range
up to 100 m (330 ft)
A variety of
antennas available
Electromagnetic flowmeters
Variable area flowmeters
Mass flowmeters
Ultrasonic flowmeters
Vortex flowmeters
Flow controllers
Level measuring instruments
Pressure and temperature
Heat metering
Communications technology
Switches, counters, displays and recorders
Engineering systems & solutions
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BM 70 A
Responsibility for suitability and intended use of our instruments rests solely with the purchaser.
Instrument versions
BM 70 A
Standard
BM 70 A
Precision
BM 70 A
Wave-Guide
Measuring range
40 m (131 ft)
40 m (131 ft)
10 m 2) (32.8 ft)2)
40 m (131 ft)
40 m (131 ft)
20 m (65.6 ft)
20 m (65.6 ft)
Block distance
(min. measuring distance from flange)
0.4 m (1.31 ft)
1 m (3.28 ft)
0.3 m (0.98 ft)
0.5 m (1.64 ft)
0.4 m (1.31 ft)
0.2 m (0.66 ft)
0.2 m (0.7 ft)
Application range1)
F, S
F
F, FG
F, FG
F, S
F, S
F, S
Accuracies
see accuracy graph
Max. allowable operating pressure
(dependent on flange type)
–1–64 bar 3)
–14.5–928 psig3)
–1–64 bar
–14.5–928 psig
–1–64 bar 3)
–14.5–928 psig3)
–1–64 bar 3)
–14.5–928 psig3)
–1–64 bar
–14.5–928 psig
–1–16 bar
–14.5–232 psig
–1–2 bar
–14–5 psig
Operating temperature at flange
250°C
482°F
250°C
482°F
250°C
482°F
250°C
482°F
250°C
482°F
100 … 150°C 4)
212 … 302°F4)
100 … 150°C
212 … 302°F
Hazardous- duty version (Ex)
Zone 0
Zone 0
Zone 0
Zone 0
Zone 0
Zone 0
Zone 1
Angle of radiation
± 8°
± 6°
± 0°
± 0°
–
± 9°
± 9°
Connection flange
DIN 2501: PN 6 – PN 64
ASME B 16.5: Class 150, 300, 600 lb/RF
DN 150/200
6”/8”
DN 200
8”
DN 50 – 200
2”– 8”
DN 50 – 200
2”– 8”
DN 100 – 200
4”– 8”
DN 50 – 150
2”– 6”
DN 50 – 150
2”– 6”
1)
F = liquids, slurries, pastes; S = particulate materials; FG = liquefied gases
2)
BM 70 A
Still well
Ex version 0 – 3 m (0 – 9.8 ft)
BM 70 A
Antenna
purging system
3)
BM 70 A
Wave-Stick
higher pressures on request
4)
BM 70 A
Wave-Stick w/o
flange plate
dependent on pressure
Technical data
1 Application range
Distance, level, volume and reflection measurement of liquids, pastes, slurries,
solids and particulate materials in storage and process tanks, in containers of metal or concrete
and in still wells
2 Operating mode/system
FMCW radar in the X band (8.5-9.9 GHz) with digital signal processing;
compact device, modular design
3 Input
Measured quantities
Primary quantities
Derived quantities
Measuring range
Block distance
Rate of change in level
4 Output
Variant
Transmission rate
Address
Protocols
Type
Current range
Accuracy/Linearity
Supply voltage
Temperature drift
Load
Switching output (optionally)
Digital input (optionally)
14
BM 700, BM 70 A, BM 70 P
distance, reflection
level, volume
min. tank height: 0.5 m (1.6 ft)
max. measuring range: 40 m (131 ft) (optionally also larger); Wave-Stick: 20 m (65.6 ft)
min. 0.2 – 1.0 m (0.7 – 3.3 ft); see table “Instrument versions”
≤ 10 m/min (≤ 32.8 ft /min)
1 Ex-e current output HART®
1200 Baud
0 – 15
KROHNE-Protocol,
HART®
active (current source);
Ex-e
4 – 20 mA
(error: 2 / 22 mA)
2 Ex-i current output HART®
1200 Baud
0 – 15
KROHNE-Protocol,
HART®
passive (current sink);
Ex-i
4 – 20 mA
(error: 3.6 / 22 mA);
4 mA constant for
HART®-Multidrop
0.05 % (rel. 20 mA; 20°C/68°F) 0.05 % (rel. 20 mA; 20°C/68°F)
8 – 30 V (terminals 31+32)
≤ 100 ppm/K
≤ 100 ppm/K
(typically 30 ppm/K)
(typically 30 ppm/K)
≤ 500 Ω
≤ (US – 8 V) / 22 mA,
(US = external supply voltage)
max. 100 mA / 30 V DC
6 – 30 V; ILow ≤ 110 mA;
or 30 V AC; internal
ULow ≤ 2 V; IHigh ≤ 900 µA
resistance ≤ 20 Ω;
(U = 30 V), IHigh ≤ 200 µA
floating
(U = 8 V)
to ‘freeze’ the measured value;
voltage: 5 – 28 V DC;
input resistance:
≥ 1 kΩ; floating
3 RS485 interface
1200 – 38400 Baud
0 – 255
KROHNE-Protocol,
HART®, Modbus-RTU
active (current source);
not-communicable; Ex-e
4 – 20 mA
(error 2 / 22 mA)
0.3 % (rel. 20 mA; 20°C/68°F)
≤ 200 ppm/K
(typically 70 ppm/K)
≤ 250 Ω
Low: I < 2 mA; High: I = 22 mA
(R ≤ 250 Ω) or no-load
voltage ≤ 18 V
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BM 70 A
Variant
Physical
Bus characteristics
Base current
Fault current
Failure signal
5 Measuring accuracy
Error of measurement and
reference conditions
Repeatability
Messwertauflösung
Umgebungstemperatureinfluss
6 Field service conditions
6.1 Installation conditions
6.2 Ambient conditions
Hazardous locations
Ambient temperature at signal converter
Flange temperature
Version
V96 with horn antenna / Wave-guide with
Gasket K4079
Gasket K2035
Gasket K6375 / K1091
Gasket Viton / FEP
Gasket Silicone / FEP
Wave-Stick
PTFE with flange plate
PTFE w/o flange plate
PP w/o flange plate
Environment class
Protection category EN 60529/IEC 529
Shock resistance
Vibration endurance limit
EMC
6.3 Product conditions
Physical properties
Relative permittivity
Product limitations
Process temperature
Operating pressure
Horn antenna/Wave-Guide
Wave-Stick
4 PROFIBUS-PA (Ex-i)
5 Foundation Fieldbus
to IEC 61 158-2 and
to IEC 61 158-2 and
FISCO model
FISCO model
9 – 30 V; 0.3 mA max.;
9 – 30 V; 0.3 mA max.;
4.2 W max.
4.2 W max.
10 mA
10 mA
6 mA
6 mA
Current output: error signal 2/22 mA or 3.6 mA (Ex-i), plain text in local display
Switching contact: contact opens or closes
Digital interfaces: error flags
see “Accuracy graph”
≤ 0.5 error of measurement
1 mm (0.039”)
no temperature effect on measured value; (see output)
Avoid interference reflections and multiple reflections
Zone 0, 1, 2; IIC/IIB, T1 –T6
–20 … +55°C (–24 … +131°F); Functional range: –40 … +70°C (–40 … +158°F)
Min. flange temperature
Standard version
Special version
Max. flange temperature
w/o HTwith HTdistance piece
distance piece
–20°C (–5°F)
–20°C (–5°F)
–20°C (–5°F)
–15°C (+5°F)
–30°C (–20°F)
+130°C (+260°F)
+130°C (+260°F)
+130°C (+260°F)
+130°C (+260°F)
+130°C (+260°F)
–
–
–
–
–60°C (–75°F)
on request
+250°C (+480°F)*
+210°C (+410°F)
+250°C (+480°F)
+200°C (+390°F)
+200°C (+390°F)
–20°C (–5°F)
–
+130°C (+260°F)** +150°C (+300°F)**
–20°C (–5°F)
–
+130°C (+260°F)
+150°C (+300°F)**
–20°C (–5°F)
–
+100°C (+210°F)
–
* Safety limit 280°C (536°F)
** pressure dependant, see below
Locations exposed direct to open-air climate, D1 Severity in conformity with EN 60654-1
(signal converter) IP 66 / IP 67
Impact test to EN 61010, Sect. 8.2 with 0.5 J energy; drop test to prEN 50178
IEC 68-2-6 and prEN 50178 (10-57 Hz: 0.075 mm / 57-150 Hz: 1 g)
EN 50081-1, EN 50082-2; NAMUR Recommendation
No effect on measurement results; for reliable measurements, the relative permittivity should have
the following minimum values:
εr ≥ 1.5; εr < 3: still well recommended; Wave-Stick immersed: εr ≥ 4
liquid ammonia (NH3); liquid hydrogen (H2); liquid helium (He)
unrestricted (but be aware of ambient and flange temperatures!)
dependent on flange size and pressure rating (see “Instrument versions”)
Standard: max. 40 bar/580 psig (higher on request)
w/o flange plate: ≤ 2 bar/29 psig
with flange plate: see diagram
+ 16
(+ 232)
46 – 0.3 T ° C bar
(740 – 2.4 T ° F psig)
Pressure in
bar (psig)
+1
(+ 14.5)
–1
(– 14.5)
– 20 Temperature T in °C (°F)
(– 4)
+ 100
(+ 212)
+ 150
(+ 302)
BM 700, BM 70 A, BM 70 P
15
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BM 70 A
7 Component parts
Dimensions and weights
Materials
Signal converter housing
Flange system, antenna,
antenna extension
Gaskets
See “Dimensions and weights”
Aluminium with electrostatic powder coating: sight window: glass
Stainless steel 1.4571 (316 Ti) or 1.4435 (316 L), Hastelloy C4 or B2, titanium, tantalum
(information on other materials available on request)
Kalrez 4079, 2035, 6375; Viton (FPM); FEP-coated
(basically, in all versions, PTFE is also in contact with the product)
only PTFE in contact with the product; flanges made of stainless steel 1.4571 (316 Ti)
Wave-Stick
Process connection
Horn antenna/Wave-Guide
DIN 2501/DIN 2526, Form C
DN 50 – DN 200 / PN 6 – PN 64
ASME B 16.5
2”– 8”, Class 150/300 lb/RF
DIN 2501/DIN 2526, Form C
DN 50 – DN 150
ASME B 16.5
2”– 6”
DIN 11851
DN 50, DN 65, DN 80
SMS 1145
51 mm, 63 mm, 76 mm
ISO 2852
2”– 4”
Cable entries
3 x M 25 x 1.5
Terminals
0.5 – 2.5 mm2 (solid conductor: max. 4 mm 2)
PE or FE and PA
U-clamp terminal (max. 4 mm 2)
Shielding for RS 485 cable and when cable for current output is > 100 m (> 328 ft)
Wave-Stick
Dairy screw connection
Tri-Clamp connection
Electrical connection
8 Local operator interface
Key pad
Magnetic sensors
Local display
Operator interface language
Units of measurement
3 keys
Operation with bar magnet without opening the housing
2-line illuminated LCD + 6 status markers
English, German, French, Spanish, Portuguese, Swedish, Italian
Lengths: m, cm, mm, inch, ft, %,
Volume: m3, Liter, US Gal, GB Gal, ft3, bbl, %
Conversion unit: any text
9 Power supply
24 V DC/AC
115/230 V AC
18 – 31.2 V DC or 18 – 26.4 V AC (45 – 66 Hz)
optionally: 100 – 120 V AC (tolerance: 85 – 127 V),
200 – 240 V AC (tolerance: 170 – 254 V); 45 – 66 Hz
typically 7.5 W / 12 VA
Power consumption
Accuracy graph
Reference conditions
Ambient temperature: 20°C (68°F)
Pressure: 1013 mbar abs. (14.69 psia)
Rel. humidity 65%
Product: water, still surface
BM 70 A Horn antenna
BM 70 A Precision
BM 70 A Wave-Stick
Absolute error in cm (inches)
Absolute error in cm (inches)
(4.72")
12
(4.72")
12
(3.94")
10
(3.94")
10
(3.15")
8
(3.15")
8
(2.36")
6
(2.36")
6
(1.57")
4
(1.57")
4
(0.79")
2
(0.79")
2
(-0.79")
-2
(-1.57")
-4
(-2.36")
-6
)
± 0.3
± 10 mm (± 0.4")
(-0.79")
-2
(-1.57")
-4
± 0.3
tance
lue (dis
d va
easure
% of m
A
BM 70
nna
rn ante
Ho
asured value
± 0.1 % of me
± 0.1 % of me
asured value
% of m
easure
d valu
(distance)
BM 70 A Precision
± 5 mm (± 0.2")
0
(distance)
e (dista
nce)
0
(-2.36")
-6
(-3.15")
-8
(-3.15")
-8
(-3.94")
-10
(-3.94")
-10
(-4.72")
-12
(-4.72")
-12
0
1
(3.28)
min. Distance,
0.18 m (0.6 ft)
16
No interference reflections
min. distance from flange face:
1/7 x tank height
5
(16.40)
BM 700, BM 70 A, BM 70 P
10
(39.37)
15
(49.21)
20
(69.62)
25
(82.02)
Distance flange - product surface in m (ft)
)
istance
lue (d
red va
f measu
%o
± 0.3
± 15 mm (± 0.59")
0
1
(3.28)
min. Distance,
0.18 m (0.6 ft)
± 0.3
5
(16.40)
% of m
easure
10
(39.37)
d valu
e (dista
nce)
15
(49.21)
20
(69.62)
25
(82.02)
Distance flange - product surface in m (ft)
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Level-Radar
BM 70 P
Measurements with a system accuracy
± 1 mm (0.04’’) and high repeatability,
for use in storage tanks
Further interfaces: RS 485,
PROFIBUS-PA, Fieldbus Foundation
The first radar level
measurement system with
dynamic PLL frequency
stabilization
System accuracy
± 1 mm (0.04’’),
repeatability
better than
0.5 mm (0.02’’)
Thermal endurance
up to 250°C (482°F)
Measuring range
up to 35 m (115 ft)
Electromagnetic flowmeters
Variable area flowmeters
Mass flowmeters
Ultrasonic flowmeters
Vortex flowmeters
Flow controllers
Level measuring instruments
Pressure and temperature
Heat metering
Communications technology
Switches, counters, displays and recorders
Engineering systems & solutions
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BM 70 P
A
Responsibility for suitability and intended use of our instruments rests solely with the purchaser.
Technical data
1 Application range
distance, level, volume and reflection measurement of liquids, and liquefied gases in storage
tanks, generally in containers of metal or concrete, and in still wells
2 Operating mode/
system structure
Quartz-controlled PLL-stabilized FMCW radar in the X band (8.5 – 9.9 GHz) with digital signal
processing; compact device, modular design
3 Input
Measured quantities
Primary quantities
Derived quantities
Measuring range
Block distance
Rate of change in level
4 Output
Variant
Transmission rate
Address
Protocols
Type
Current range
Accuracy/Linearity
Supply voltage
Temperature drift
Bürde
Switching output (optionally)
Digital input (optionally)
Variant
Physical
Bus characteristics
Base current
Fault current
Failure signal
5 Measuring accuracy
Error of measurement
Repeatability
Measured-value resolution
Ambient temperature effect
18
BM 700, BM 70 A, BM 70 P
distance, reflection
level, volume
min. tank height: 0.5 m (1.6 ft)
max. measuring range: 35 m (115 ft) with still pipe 30 m (100 ft)
min. 0.5 m (1.6 ft)
≤ 1 m /min (≤ 3.3 ft /min)
1 Ex-e current output HART®
1200 Baud
0 – 15
KROHNE-Protocol,
HART®
active (current source);
Ex-e
4 – 20 mA
(error: 2 / 22 mA)
2 Ex-i current output HART®
3 RS485 interface
1200 Baud
1200 – 38400 Baud
0 – 15
0 – 255
KROHNE-Protocol,
KROHNE-Protokcol,
HART®
HART®, Modbus-RTU
passive (current sink);
active (current source);
Ex-i
not-communicable; Ex-e
4 – 20 mA
4 – 20 mA
(error: 3.6 / 22 mA);
(error: 2 / 22 mA)
4 mA constant for
HART®-Multidrop
0.05 % (rel. 20 mA; 20°C/68°F) 0.05 % (rel. 20 mA; 20°C/68°F) 0.3 % (rel. 20 mA; 20°C/68°F)
8 – 30 V (terminals 31+32)
≤ 100 ppm/K
≤ 100 ppm/K
≤ 200 ppm/K
(typically 30 ppm/K)
(typically 30 ppm/K)
(typically 70 ppm/K)
≤ 250 Ω
≤ 500 Ω
≤ (US – 8 V) / 22 mA,
(US = external supply voltage)
Low: I < 2 mA; High: I = 22 mA
max. 100 mA / 30 V DC
6 – 30 V; ILow ≤ 110 mA;
or 30 V AC; internal
ULow ≤ 2 V; IHigh ≤ 900 µA
(R ≤ 250 Ω) or no-load
resistance ≤ 20 Ω
(U = 30 V), IHigh ≤ 200 µA
voltage ≤ 18 V
(U = 8 V)
to ‘freeze’ the measured value;
voltage: 5 – 28 V DC;
input resistance:
≥ 1 kΩ; floating
4 PROFIBUS-PA (Ex-i)
5 Foundation Fieldbus
to IEC 61 158-2 und
to IEC 61 158-2 und
FISCO model
FISCO model
9 – 30 V; 0.3 mA max.;
9 – 30 V; 0.3 mA max.;
4.2 W max.
4.2 W max.
10 mA
10 mA
6 mA
6 mA
Current output: error signal 2/22 mA or 3.6 mA (Ex-i), plain text in local display
Switching contact: contact opens or closes
Digital interfaces: error flags
min. ± 1 mm (0.04’’) or ± 0.01% [T = 20°C (68°F); p = 1 bar abs. (14.7 psia)
≤ 0.5 x error of measurement
0.1 mm (0.04”)
– 1 ppm /°C
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BM 70 P
A
6 Field service conditions
6.1 Installation conditions
Angle of radiation
6.2 Ambient conditions
Hazardous locations
Ambient temperature at signal converter
Flange temperature
Version
V96 with horn antenna / Wave-guide with
Gasket K4079
Gasket K2035
Gasket K6375 / K1091
Gasket Viton / FEP
Gasket Silicone / FEP
avoid interference reflections and multiple reflections
Horn antenna type 4: ± 6°
Still well: ± 0°
Zone 0, 1, 2; IIC/IIB, T1 – T6
–20 … +55°C (–24 … +131°F); functional range: –40 … +70°C (–40 … +158°F)
Min. flange temperature
Standard version
Special version
Max. flange temperature
w/o HTwith HTdistance piece
distance piece
–20°C (–5°F)
–20°C (–5°F)
–20°C (–5°F)
–15°C (+5°F)
–30°C (–20°F)
+130°C (+260°F)
+130°C (+260°F)
+130°C (+260°F)
+130°C (+260°F)
+130°C (+260°F)
–
–
–
–
–60°C (–76°F)
on request
+250°C (+480°F)*
+210°C (+410°F)
+250°C (+480°F)
+200°C (+390°F)
+200°C (+390°F)
* Safety limit 280°C (536°F)
Environment class
Protection category EN 60529/IEC 529
Shock resistance
Vibration endurance limit
EMC
6.3 Product conditions
Physical properties
Relative permittivity
Product limitations
Process temperature
Operating pressure
Horn antenna/Wave-Guide
7 Component parts
Dimensions and weights
Materials
Signal converter housing
Flange system, antenna,
antenna extension
Gaskets
Process connection
Horn antenna
Wave-Guide
Electrical connection
8 Local operator interface
Key pad
Magnetic sensors
Local display
Operator interface language
Units of measurement
9 Power supply
24 V DC/AC
115/230 V AC
Power consumption
locations exposed direct to open-air climate, D1 Severity in conformity with EN 60654-1
(signal converter) IP 66 / IP 67
impact test to EN 61010, Sect. 8.2 with 0.5 J energy; drop test to prEN 50178
IEC 68-2-6 and prEN 50178 (10-57 Hz: 0.075 mm / 57-150 Hz: 1 g)
EN 50081-1, EN 50082-2; NAMUR Recommendation
no effect on measurement results; for reliable measurements, the relative permittivity should have
the following minimum values:
εr ≥ 1.5; εr < 3: still well recommended
liquid ammonia (NH3); liquid hydrogen (H2); liquid helium (He)
unrestricted (but be aware of ambient and flange temperatures!)
dependent on flange size and pressure rating. Standard: max. 10 bar (145 psig) (higher on request);
see “Dimensions and weights”
aluminium with electrostatic powder coating: sight window: glass
Stainless steel 1.4571 (316 Ti) or 1.4435 (316 L), Hastelloy C4 or B2, titanium, tantalum
(information on other materials available on request)
Kalrez 4079, 2035, 6375; Viton (FPM); FEP-coated
(basically, in all versions, PTFE is also in contact with the product)
DN 200, PN 10 or 8”, 150 lb/RF
DIN 2501/DIN 2526, Form C
DN 50 – DN 200 / PN 6 – PN 64
ASME B 16.5
2”– 8”, Class 150/300 lb/RF
Cable entries
3 x M 25 x 1.5
Terminals
0.5 – 2.5 mm2 (solid conductor: max. 4 mm2)
PE or FE and PA
U-clamp terminal (max. 4 mm2)
Shielding for RS 485 cable and when cable for current output is > 100 m (> 328 ft)
3 keys
operation with bar magnet without opening the housing
2-line illuminated LCD + 6 status markers
English, German, French, Spanish, Portuguese, Swedish, Italian
Lengths: m, cm, mm, inch, ft, %,
Volume: m3, Liter, US Gal, GB Gal, ft3, bbl, %
Conversion unit: any text
18 – 31.2 V DC or 18 – 26.4 V AC (45 – 66 Hz)
optionally: 100 – 120 V AC (tolerance: 85 – 127 V),
200 – 240 V AC (tolerance: 170 – 254 V); 45 – 66 Hz
typically 7.5 W / 12 VA
BM 700, BM 70 A, BM 70 P
19
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BM 70 A,
A BM 70 P
Dimensions and weights
Dimensions in mm (inches)
Flange connections to:
DIN 2501 (= BS 4504) DN 50 – DN 200 / PN 6 – PN 64
ASME B 16.5 / 2”– 8” / Class 150/300 lb, RF
Nominal size to
DN
ASME
BM 70 Horn antenna
214 (8.42”)
353 (13.89”)
f
315 (12.40”)
175 (6.89”)
80
100
150
200
80
100
150
200
3”
4”
6”
8”
3”
4”
6”
8”
Antenna
Øa
1
2
3
4
1S*
2S*
3S*
4S*
80 (3.15)
100 (3.94)
140 (5.51)
200 (7.78)
76 (2.98)
100 (3.94)
152 (5.98)
200 (7.78)
Dimensions (mm/inches)
f (SS)
f (HC)
110 (4.33)
148 (5.83)
223 (8.78)
335 (13.19)
420 (16.54)
620 (24.41)
820 (32.28)
820 (32.28)
f (Titanium/
Tantalum)
145 (5.71) 110 (4.33)
177 (6.97) 146 (5.75)
250 (9.84) 220 (8.66)
360 (14.17) 332 (13.07)
–
–
–
–
–
–
–
–
Weight
(kg/lb)
17 (37.5)
18 (39.7)
23 (50.7)
30 (66.1)
18 (39.7)
19 (41.9)
25 (55.1)
32 (70.5)
* Only for BM 70 P for use in still wells
a
BM 70 Wave-Stick
Weight DN 50: approx. 12.5 kg (27.6 lb)
BM 70 Wave-Stick
(Dairy screw connection to DIN 11 851)
BM 70 Wave-Guide
Weight DN 50; 1 m: approx.: 13.5 kg (29.8 lb)
313 (12.32”)
313 (12.32”)
270 (10.63”)
260 (10.24”)
315 (12.40”)
226 (8.89”)
226 (8.89”)
246 (9.68”)
384 (15.12”)*
384 (15.12”)
dia. 25
dia. 30 (1.18”)
* other lengths on request
BM 70 Antenna purging system
BM 70 High-temperature version
BM 70 Antenna extensions
Rectangular extension
313 (12.32”)
313 (12.32”)
315 (12.40”)
226 (8.89”)
271
226 (8.89”)
120 (4.72”)
271
10
f
420 (16.54”)
R1
S-shaped extension
323 (12.72”)
300 (11.81”)
20
BM 700, BM 70 A, BM 70 P
Information on other
dimensions available
on request
Straight
extension
100 – 2000
(3.94” – 78.74”)
dia. 0.98”
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BM 70 A,
A 70 P
Electrical connections
BM 700, BM 70 A, BM 70 P
21
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BM 700,
70 A 70 A, 70 P
Communication systems
Communications interfaces
The BM 70 level radar systems can be operated with various
communication interfaces.
– PROFIBUS-PA protocol
– Fieldbus Foundation protocol
KROHNE SMART
Standard interface for data transmission to a control unit.
The following protocols are available for the RS 485 interface:
– KROHNE protocol
– Modbus protocol
HART®protocol
The HART® protocol transmits communication signals.
PC-CAT for Windows
User-friendly software package for setting and evaluation of
BM 700 and BM 70 A/P data.
22
BM 700, BM 70 A, BM 70 P
KROHNE Tank Management System
In addition to level gauging with the BM 70 A/P, KROHNE also supplies
complete tank management systems.
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BM 700,
70 A 70 A, 70 P
User program PC-CAT for Windows
Our BM 70 is easy to install. To facilitate configuration, each unit is
supplied with the intuitive and time-tried software, PC-CAT for
Windows. PC-CAT provides a number of useful features including:
Quick on-site configuration
Print-out of configuration protocol
Simple conversion, volume or correction tables
Check routine to monitor functionality of the BM 70
Monitoring and recording of the radar signal during operation
Trend and evaluation of the signal during operation
PC-CAT allows convenient remote control of all functions of the signal
converter. The vessel can be shown in schematic form together with the
associated measured values and the measured spectrum. A trend
graph of the output signal and threshold signal strength is also provided. All relevant instrument data can be recorded in the form of a data
set small enough to be stored on a floppy disk or transferred electronically. Stored data can also be used for configuring other units of the
BM 70 product line.
PC-CAT works on all IBM-compatible PC’s using Windows 9x or NT.
PC-CAT files can later be used to analyse the performance of the level
gauge. All graphs and screens can be exported to word processing
systems or other programs.
PC-CAT Version 4.00 and higher can communicate with all current
KROHNE level radar gauges including BM 70 A/P, BM 700, BM 702
versions, also with HART® protocol and RS 485.
The PC-CAT kit includes a PC adapter for current output. The adapter can be connected to the PC’s standard RS 232 interface.
The customer’s PC containing PC-CAT is connected to the current output via the supplied PC adapter, max. distance from the level gauge:
1000 m or 3300 ft. The PC adapter has no effect on in-line instruments such as milliammeters, recorders, etc., connected to the current
output.
With every BM 70 delivery you get the freeware program PC-CAT for
Windows Lite (Vers. 4.01 / Order No.: V 5001 00 506). Herewith you
can perform the normal configuration, simple analyses and record
PC-CAT files - all you need is a regular HART®-adapter.
Approvals
Application
With Explosion protection
In stationary storage tanks for
flammable, water pollutants
liquids, classes AI, AII and B
Quality assurance
Druckbehälterverordnung
(German pressure vessel code)
Approved by
Instrument version
Certification mark
PTB (II 1/2 G EEx de IIC T1 – T6, Zone 0)
(EEx de (ia)/(ib) IIC/IIB T1 – T6, Zone 0)
FM / USA (I Div. 1 Gr. B/C/D, II/III Div. 1 Gr. E/F/G)
FM / USA (I Div. 2 Gr. B/C/D, II/III Div. 2 Gr. E/F/G)
FM / USA (I Div. 1 Gr. B/C/D; II Div. 1 Gr. E/F/G; III
I Div. 2 Gr. B/C/D; II Div. 2 Gr. F/G; III)
CSA / Canada (I Gr. B/C/D; II Gr. E/F/G, III)
RIIS / Japan (T6)
TÜV/CERT
KWU
BM 70 Ex
PTB 99 ATEX 2061 X
BM 70 A i, BM 70 P i
BM 70 Ex
J. I. 3000 813
BM 70 Wave-Stick
RW TÜV
BM 70 i
J. I. 3006 165
BM 70 Ex
BM 70 Ex
LR 105802-5
pending
DIN ISO 9001/EN 29001
KTA 1401 QSP 4A
BM 70
5636602
BM 70 line
23