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3 Product description
Application area
Functional principle
Packaging
Transport
Transport inspection
8
– Supplementary instructions manual "Plug connector for con-
tinuously measuring sensors" (optional)
– Ex-specific "Safety instructions" (with Ex versions)
– if necessary, further certificates
•
DVD "Software & Documents", containing
– Operating instructions
– Safety instructions
– PACTware/DTM-Collection
– Driver software
3.2
Principle of operation
The LEVEL TRANSMITTER 8136 is a radar sensor for continuous
level measurement of liquids under simple process conditions.
Dependent on the application range, different versions are used:
•
Level measurement of aggressive liquids in small vessels: encap-
sulated antenna system
•
Flow measurement in open flumes or gauge measurement of bod-
ies of water: Plastic horn antenna
•
Products with an ε
•
Products with an ε
reflective properties: Electronics with increased sensitivity
The actual values that can be reached depend on the measurement
conditions, the antenna system or the standpipe or bypass.
The antenna of the radar sensor emits short radar pulses with a
duration of approx. 1 ns. These pulses are reflected by the product
and received by the antenna as echoes. The transit time of the radar
pulses from emission to reception is proportional to the distance and
hence to the level. The determined level is converted into an appropri-
ate output signal and outputted as measured value.
3.3
Packaging, transport and storage
Your instrument was protected by packaging during transport. Its
capacity to handle normal loads during transport is assured by a test
based on ISO 4180.
The packaging of standard instruments consists of environment-
friendly, recyclable cardboard. For special versions, PE foam or PE
foil is also used. Dispose of the packaging material via specialised
recycling companies.
Transport must be carried out in due consideration of the notes on the
transport packaging. Nonobservance of these instructions can cause
damage to the device.
The delivery must be checked for completeness and possible transit
damage immediately at receipt. Ascertained transit damage or con-
cealed defects must be appropriately dealt with.
LEVEL TRANSMITTER 8136 • 4 ... 20 mA/HART - two-wire
value ≥ 1.8: Standard electronics
r
value ≥ 1.5, < 1.8; applications with very poor
r
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