KROHNE BM 70 A Operating Instructions

DIN A4: 7.02224.32.00
©
KROHNE 01/2001 US size: 7.02224.72.00
GR/LD
This documentation is designed to help the user and/or systems
planning engineer select the optimum instrument type, assess
measurement properties, and plan the mechanical and electrical
installation.
Detailed information on installation, operation and control of type
BM 70 A/P, BM 702 Level-Radar instruments is contained in the
“BM 70 A/P or BM 702 Installation and Operating Instructions” and
the Short Manual “Getting Started with BM 70 A”, which are supplied
together with the instruments.
The structure of this documentation is modelled on the lines of DIN V 19259 V Standard.
Project Engineering
Guidelines
BM 70 A, BM 70 P, BM 702
LEVEL-RADAR
Contents: Page
1 Application range 2
2 Mode of operation and system structure 3
3 Input (measured quantity) 5
4 Output 6
5 Measuring accuracy 11
6 Application conditions 14
7 Design 23
8 User interface 34
9 Power supply 36
10 Certificates and approvals 38
11 Order information 39
12 External standards, codes and directives 40
13 Quality assurance 40

KROHNE BM 70 A Specifications

General

Application	Level measurement
Accuracy	±2 mm
Output	4-20 mA, HART®
Housing material	Aluminum, stainless steel
Process connection	Flange, thread
Approvals	ATEX, IECEx, FM, CSA
Protection class	IP66/IP67
Communication	HART, Modbus
Process temperature	-40 to +80 °C