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
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 as a 4-20 mA signal.
Procedure
1.
Under
Menu, select Parameter → Basic Setup.
2. In the OUT2 Configuration list, select Analog Output 4-20 mA.
3. In the Alarm Mode list, select Low Alarm or High Alarm.
4. Select OUT2 → Analog Output 2.
5. Enter the desired Upper Range Value (20 mA).
6. Enter the desired Lower Range Value (4 mA).
7. Select Write to device.
Related information
Analog output
5.5.4 Configure the digital output
The transmitter can be set to output a switching signal for high and low level limits (using
the same pin).
Procedure
1.
Under
Menu, select Parameter → Basic Setup.
2. In the OUT1 Configuration or OUT2 Configuration list, select Digital Output Normally
Open.
3. In the Digital Outputs P-n list, select PnP or nPn.
4. Select Digital Output 1 or Digital Output 2.
5. Set the alarm parameters as desired.
6. Select Write to device.
Related information
Digital output
Reference Manual Configuration
00809-0100-4480
September 2020
Reference Manual 39