Reference Manual
Table Of Contents
- Rosemount 1408H Level Transmitter
- Contents
- 1 Introduction
- 2 Transmitter overview
- 3 Mechanical installation
- 3.1 Safety messages
- 3.2 Installation considerations
- 3.3 Mounting preparations
- 3.4 Mount transmitter on tank
- 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 General power supply fault – Check availability
- 7.2.3 Device software fault – Check firmware revision
- 7.2.4 Parameter error – Check data sheet and values
- 7.2.5 Short circuit – Check installation
- 7.2.6 Device memory failure – Restore default settings
- 7.2.7 Level measurement lost – Check application
- 7.2.8 Simulation active – Check operational mode
- 7.2.9 Device temperature over-run – Clear source of heat
- 7.2.10 Device temperature under-run – Insulate device
- 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
- 7.3 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
Ambient temperature
-40 to 176 °F (-40 to 80 °C)
The ambient temperature limits may be further restricted by the process temperature as
described by Figure A-3.
Figure A-3: Ambient Temperature vs. Process Temperature
A
B
104
(40)
176 (80)
302
(150)
176
(80)
-40
(-40)
-40 (-40)
A. Ambient temperature °F (°C)
B. Process temperature °F (°C)
Storage temperature
-40 °F to 194 °F (-40 °C to 90 °C)
A.3 Physical specifications
A.3.1 Material selection
Emerson provides a variety of Rosemount products with various product options and
configurations including materials of construction that can be expected to perform well in
a wide range of applications. The Rosemount product information presented is intended
as a guide for the purchaser to make an appropriate selection for the application. It is the
purchaser’s sole responsibility to make a careful analysis of all process parameters (such as
all chemical components, temperature, pressure, flow rate, abrasives, contaminants,
etc.), when specifying product, materials, options, and components for the particular
application. Emerson is not in a position to evaluate or guarantee the compatibility of the
process fluid or other process parameters with the product, options, configuration or
materials of construction selected.
A.3.2 Transmissible Spongiform Encephalopathy (TSE)
Declaration
Emerson certifies no process wetted components used in hygienic seal products contain
substances of animal origin. Materials used in the production or processing of wetted
Reference Manual Specifications and reference data
00809-0100-4480 September 2020
Reference Manual 77