Operating Instructions PT-LE
4
1.
Safety Instructions
1.1.
Use for Intended Purpose Only
The PT-LE differential pressure transducer registers both differential pressure and
positive/negative gauge pressure.
The operational requirements on the rating plate and in the "Specifications" chapter -
and the safe supply voltage in particular - must be kept to.
The transducer is only to be handled in conformity with these operating instructions.
No modifications to the transducer are permitted. The manufacturer is not liable for
damage arising from any incorrect use or one at variance to the intended purpose.
Claims to warranty in such an instance would be forfeited.
1.2.
Transport, Installation, Connection and Startup
Do not block the pressure inlets on the transducer being moved! Changes in
barometric pressure may damage transducers with low measuring ranges.
Only qualified personnel are to assemble the appliance and see to its electrical
connections. They must be instructed as such and be assigned by the plant operator.
Only instructed persons as assigned by the plant operator are to operate the
transducer.
Do not perform any functional test involving compressed or breathable air. This
would otherwise damage those transducers with low measuring ranges.
Measurement errors may occur should the appliance not be protected from sunlight.
Specific safety instructions are given in the individual chapters.
1.3.
Malfunctions, Maintenance, Repairs, Disposal
Malfunctions which cannot be put right as specified in Chapter 8 and damage at the
appliance itself must be immediately reported to the qualified personnel with
responsibility for the electrical connections.
The appliance must be taken out of service by the qualified personnel responsible
until the malfunction has been put right and also secured against being
unintentionally used.
Always switch off the power to the appliance before it is opened!
The appliance does not need any maintenance.
Only the manufacturer is to carry out repairs.
The electrical components of the transducer contain both environmentally hazardous
materials and materials that can be reused. That is why the appliance is to be
recycled once it is finally immobilized. The environment directives on this from the
country in question must be followed.
