KROHNE BM 70 A_P EN User Manual
Page 73
Installation and operating instructions BM 70 A/P
Page: 73
11/00
Wave-Stick:
Horn antenna, Wave-Guide
(Tamb
≤
55°C/131°F):
-30...+120°C
(
-22...+248°F)
High-temperature version with:
- FFKM gasket
(Kalrez 4079/Parofluor V8545-75):
-30...+250°C
(
-22...+482°F)
(safety limit 280°C/536°F)
- Kalrez 2035 gasket:
-30...+210°C
(
-22...+410°F)
- Viton gasket:
-30...+200°C
(
-22...+392°F)
- FEP-sheathed gasket:
-30...+200°C
(
-22...+392°F)
-20...+100°C
(
-4...+212°F)
pressure-dependent up to +150°C/302°F
Environment class
Locations exposed direct to open-air climate, D1 Severity in conformity with
EN 60654-1
Protection category
(signal converter) IP 66 / IP 67
Shock resistance
Impact test to EN 61010, Sect. 8.2 with 0.5 J energy; drop test to
prEN 50178
Vibration endurance limit
IEC 68-2-6 and prEN 50178 (10-57Hz:0.075 mm/57-150 Hz:1 g)
EMC
EN 50081-1, EN 50082-2; NAMUR Recommendation
6.3
Product conditions
Physical properties
Relative permittivity
No effect on measurement results; to ensure reliable measurements, the
relative permittivity should have the following minimum values:
ε
r > 1.5;
ε
r < 3: stilling well recommended; Wave-Stick immersed:
ε
r > 4
Limitations
Liquid a mmonia (NH3); liquid hydrogen (H2); liquid helium (He)
Temperature of product
unrestricted (but be aware of ambient and flange temperatures)
Operating pressure
Horn antenna/Wave-Guide
Wave-Stick
dependent on flange size and pressure rating (see Table)
Standard: max. 64 bar (higher on request)
Temperature T
Pressure
-20
+150 °C
+100
-15
+15
232
(46 - 0.3·T[°C]) bar
-4
+302 °F
+212
-1
+1
+16
bar psig
(740 - 2.4·T[°F]) psig
7
Component parts
Dimensions and weights
see Sect. 7.2
Materials
Housing: signal converter
Flange system, antenna, extension
Gaskets
Wave-Stick
Aluminium with electrostatic powder coating; sight window: glass
Stainless steel 1.4571 or 1.4435, Hastelloy C4 or B2, titanium, tantalum;
(other materials on request)
FFKM (Kalrez 4079 or Parofluor V8545-75); Kalrez 2035; Viton (FPM); FEP-
sheathed (basically, all versions include PTFE as the material in contact with
the product)
only PTFE in contact with product; flange made of 1.4571 (316 Ti)
Process connection
Horn antenna/Wave-Guide
Wave-Stick
Dairy screw connection
Tri-Clamp connection
DIN 2501 / DIN 2526, Form C DN 50 … DN 200 / PN 6 … PN 64;
ANSI B 16.5 2‘‘ … 8‘‘, Class 150/300 lb/RF;
DIN 2501 / DIN 2526, Form C DN 50 … 150;
ANSI B 16.5 2‘‘ … 6‘‘;
DIN 11 851 DN 50, DN 65, DN 80
SMS 1145 51 mm, 63 mm, 76 mm
ISO 2852 2‘‘ … 4‘‘
Electrical connection
Cable entries:
3x M25×1,5
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 for current output cable > 100 m
8
User interface
Keypad
3 keys
Magnetic sensors
operation with magnetic pin without opening the housing
Local display
2-line illuminated LCD + 6 status markers
User language
German, English, French, Italian, Spanish, Portuguese, Swedish
Units of measurement
Length: m, cm, mm, inch, ft, %
Volume: m³, Liter, US Gal, GB Gal, ft3, bbl, %
Conversion unit: any text
9
Power supply
24 V DCAC
18-31.2 V DC or 18-26.4 V AC (45-66 Hz)
115/230 V AC
optionally: 100-120 V AC (tolerance: 85-127V),
200-240 V AC (tolerance: 170-254V); 45-66 Hz
Power consumption
Typically 7.5 - 10 W / 12 VA