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
Procedure
1. Under
Menu, select Parameter → Service Tools → Analog Out Calibration.
2. Perform the calibration of 4 mA.
a) Select Enter 4 mA Fixed Current Mode to set the analog out to 4 mA.
b) Measure the analog output with the ampere meter.
c) In the 4 mA Measured Current box, enter the measured current.
d) Select Write to device.
e) Select Calibrate 4 mA.
f) Measure the analog output with the ampere meter and verify it is within
4±0.01 mA.
3. Perform the calibration of 20 mA.
a) Select Enter 20 mA Fixed Current Mode to set the analog out to 20 mA.
b) Measure the analog output with the ampere meter.
c) In the 20 mA Measured Current box, enter the measured current.
d) Select Write to device.
e) Select Calibrate 20 mA.
f) Measure the analog output with the ampere meter and verify it is within
20±0.01 mA.
4. Select Exit Fixed Current Mode.
7.5.6 View input registers
Measured data is continuously stored in the input registers. By viewing the contents of the
input registers, expert users can check that the transmitter works properly.
Procedure
1.
Under Menu, select Diagnosis → Read Input Registers.
2. In the Input Reg. Number box, enter the input register to start reading from.
The default start register is 5100 (Alert Summary).
3. Select Write to device.
4. Select Read to device (not required in Rosemount IO-Link Assistant).
Five registers will be read, starting from the selected number.
Reference Manual Service and troubleshooting
00809-0100-4480
September 2020
Reference Manual 67