Reference Manual
Table Of Contents
- Rosemount 1408A Level and Flow Transmitter
- Contents
- 1 Introduction
- 2 Transmitter overview
- 3 Mechanical installation
- 4 Electrical installation
- 5 Configuration
- 6 Operation and maintenance
- 7 Service and troubleshooting
- 7.1 Safety messages
- 7.2 Diagnostic messages
- 7.2.1 Device hardware fault – Device exchange
- 7.2.2 Device software fault – Check firmware revision
- 7.2.3 General power supply fault – Check availability
- 7.2.4 Parameter error – Check data sheet and values
- 7.2.5 Device memory failure – Restore default settings
- 7.2.6 Simulation active – Check operational mode
- 7.2.7 Level measurement lost – Check application
- 7.2.8 Device temperature over-run – Clear source of heat
- 7.2.9 Device temperature under-run – Insulate device
- 7.2.10 Short circuit – Check installation
- 7.2.11 Primary supply voltage over-run – Check tolerance
- 7.2.12 Primary supply voltage under-run – Check tolerance
- 7.2.13 Maintenance required - Cleaning
- 7.2.14 Max EEPROM write cycles expired – Check master and restart the device
- 7.2.15 Measurement range over-run – Check application
- 7.3 Troubleshooting incorrect level readings
- 7.3.1 Reported level is too high or low
- 7.3.2 Level is stuck in measuring range
- 7.3.3 Level is stuck in full tank
- 7.3.4 Level value drops when close to antenna
- 7.3.5 Measured level fluctuates
- 7.3.6 Measured level is occasionally unstable
- 7.3.7 Lagging of measured level
- 7.3.8 Incorrect level at 100% (20 mA)
- 7.3.9 Incorrect level when product surface is above 50%
- 7.3.10 Dropping of level close to tank bottom
- 7.3.11 Level measurement is lost in an empty tank
- 7.3.12 Alarm mode close to tank bottom
- 7.4 Managing disturbance echoes
- 7.5 Service and troubleshooting tools
- 7.6 Service support
- A Specifications and reference data
- A.1 Performance specifications
- A.2 Functional specifications
- A.3 Physical specifications
- A.4 Dimensional drawings
- B Product certifications
- C Configuration parameters
5.5 Perform the basic setup
5.5.1 Set the engineering units
Procedure
1. Under Menu
, select Parameter → Basic Setup.
2. In the Engineering Units list, select Metric or Imperial.
Option Description
Metric Length: m
Temperature: °C
Volume flow: m
3
/h
Imperial Length: in.
Temperature: °F
Volume flow: US gal/h
3. Select Write to device.
5.5.2 Enter the reference height
Procedure
1.
Under Menu
, select Parameter → Basic Setup.
2. Enter the Reference Height.
3. Select Write to device.
Related information
Reference height
5.5.3 Configure the analog output
The transmitter can be set to output the level or volume flow as a 4-20 mA signal.
Procedure
1. Under Menu
, select Parameter → OUT2 Analog Output.
2. In the OUT2 Configuration list, select Analog Output 4-20 mA.
3. In the Analog Control Variable list, select Level or Volume Flow.
4. In the Alarm Mode list, select Low Alarm or High Alarm.
5. Select Analog Range Values, and then enter the desired Upper Range Value (20
mA) and Lower Range Value (4 mA).
6. Select Write to device.
Reference Manual Configuration
00809-0200-4480 May 2021
Reference Manual 33