5.1 - General
M2041/5en
SBT-2400 Service Instructions
33
©BTG 2006
5
Service Instructions
5.1 General
If the transmitter is correctly installed, service can be kept to a minimum. The
transmitter is designed and built to be robust enough to withstand high me-
chanical impacts on the blade. However, special precautions may be needed
in the event of abnormal situations occurring.
Examples of abnormal situations include:
•
Excessive vibration in the pipe system
Vibration can ruin the measurement and cause abnormal wear on the
transmitter. If the vibration level is too high, locate the reason and take ap-
propriate steps to remove the vibration.
The problem can be caused by cavitation in a pump or weak process-pipe
supports.
If the problem cannot be found or corrected at the source, install flexible
rubber bellows in the process pipe.
•
Pulp contains large foreign objects or high-consistency chunks
If the pulp can contain large foreign objects, or high-consistency chunks,
flow deflectors must be installed. Otherwise the blade and measuring
module risk damage.
5.1.1
Use of Equipment
•
The transmitter is not designed to be used as a ladder or a footstep!
Do not use it as such!
•
The signal cable must be correctly located and supported to avoid
stress to the contact as well as to the cable.
•
The contact must be correctly tightened to avoid leakage.
•
To avoid signal interference, the signal cable must not be close to the
high voltage power cables.
•
Do not clean the transmitter using a high-pressure jet cleaner! Water
may penetrate into the transmitter and damage it.
Protect the transmitter from frequent flooding from sources such as a
chest.
•
Power must be within correct voltage range (20-35VDC) when
connecting the transmitter.
Over-voltage will ruin the electronics!
5.1.2
Basic Conditions
Ensure that suitable tools and measuring instruments are available. Certain
actions require special tools from BTG. Required tools, spare parts, and con-
sumables are listed in each service action section.
