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
Related information
Bracket hole pattern
3.4.2 Mount on a threaded flange connection
Procedure
1. Place a suitable soft gasket on the tank flange.
2. Place the flange over the gasket.
3. Tighten the bolts and nuts with sufficient torque for the flange and gasket choice.
0.75 in. (19 mm)
4. Apply lubricating paste on the transmitter thread.
Note
The paste must be approved for the application and compatible with the
elastomers used.
Mechanical installation Reference Manual
May 2021 00809-0200-4480
20 Rosemount 1408A Level and Flow Transmitter