ISA 50.1 : 1982
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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COMPATIBILITY OF ANALOG SIGNALS FOR ELECTRONIC INDUSTRIAL PROCESS INSTRUMENTS
Hardcopy
27-11-2002
English
01-01-1992
1 Scope and purpose
2 Definitions
2.1 Elements of process control systems
2.2 Subsystems
2.3 Analog dc current signal
2.4 Measured value of an analog dc current signal
2.5 Range of an analog dc current signal
2.6 Lower limit
2.7 Upper limit
2.8 Load resistance
2.9 Ripple content
2.10 Signal common
2.11 Signal isolation
3 Standard signals
3.1 Polarity
3.2 Transmitters
3.3 Receivers
4 Standard transmitters
4.1 General
4.2 System compatibility
4.3 Classification
4.4 Load resistance specification
4.5 Electrical isolation
4.6 Ripple and noise content
5 Standard receivers
5.1 Inputs
5.2 Outputs
5.3 Isolation
6 System
6.1 Signal common
6.2 Power supplies
6.3 Transmitters
6.4 Receivers or signal processors
6.5 Test power sources
7 Appendix
Applies to analog dc signals used in process control and monitoring systems to transmit information between subsystems or separated elements of systems and provides compatibility between the several subsystems or separated elements of given systems.
| Committee |
SP50
|
| DocumentType |
Standard
|
| Pages |
20
|
| PublisherName |
International Society of Automation
|
| Status |
Superseded
|
| SupersededBy |
| API 552 : 1994 | TRANSMISSION SYSTEMS |
| UFC 3-430-11 : 2001 | UNIFIED FACILITIES CRITERIA - BOILER CONTROL SYSTEMS |
| IEC 60381-1:1982 | Analogue signals for process control systems. Part 1: Direct current signals |
| IEC 60381-2:1978 | Analogue signals for process control systems. Part 2: Direct voltage signals |
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