halstrup-walcher PS27, Оригинальная инструкция по эксплуатации

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Operating Instructions PS27
6
1.4 Symbols
The symbols below in these operating instructions point to the risks, which could arise
in handling the equipment:
WARNING! It points to a hazard possibly extending from
injures through to death should the instructions
not be followed.
CAUTION!
It points to a hazard which could cause
considerable damage should the instructions not
be followed.
INFORMATION!
This indicates information, which is vital for
proper appliance operations
2.
Description of the pressure transmitter
Type PS27 differential pressure transmitters are pneumatic/electrical sensors for
pressure testing (positive/negative gauge pressure and differential pressure)
purposes. They are typically used in air-conditioning and ventilation technology e.g.
pressure testing in ventilation ducts. The transmitter's core is a piezoresistive
pressure transmitter.
3.
Startup
3.1 Functional Description
PS27 pressure transmitters are of the precision type and despite their sturdiness they
should still be treated with care. Installation right next to heat and radiation sources
e.g. radiators should be avoided as this may lead to measurement errors arising.
Ideally the appliance should be vertically mounted on a wall not subject to any
vibrations. To stop any condensed water entering the measurement cell, the
transmitter together with the hose connections for positive gauge pr and
negative gauge pressure - should be pointing downwards.
The right pressure sign must be used in keeping with the following table when
connecting the pressure to the transmitter:
Type of pressure Connect pressure to Example
pos. gauge pressure + input 0...1 kPa
neg. gauge pressure - input 0...- 500 Pa
Differential pressure Higher pressure at + input
lower pressure at - input 0...125 Pa e.g via a differential
pressure producer (e.g. measuring
orifice)
Symmetrical pressure ranges + input

200 Pa
Asymmetrical pressure
ranges Input of the larger pressure
range -300 Pa...+ 1 kPa
(here connect to + input)