PRESSURIX D Technical Data

PRESSURIX D Technical Data
Process Automation
Edition 12.13
1
Technical Changes Reserved
PRESSURIX D
Technical Data
Case design
stainless steel
design:
st. steel case with right angle plug
st. steel field housing
Temperature ranges
storage temperature range:
-25...+80 °C
limiting temperature range:
-25...+70 °C
rated temperature range :
-10...+70 °C
process temperature:
depending on type
(measuring range, design and system filling)
Measuring accuracy
linearity error incl. hysteresis
<+0.3 % f.s.
(limit point calibration)
temperature effect see data sheet
Auxiliary energy supply
standard version:
· nominal voltage
24 V DC
· function range
2-wire technology
14...30 V DC
3-wire technology
16...30 V DC
· max. permiss. operating voltage 30 V DC
Output signal
4...20 mA, 2-wire technology
0...20 mA/0...10 V/4...20 mA,
3-wire technology
Caution:
Make sure that there is equipotential bonding along
the entire wiring run both inside and outside the
explosion hazardous area.
Current limitation in output signal
max. output current approx. at 30 mA
Switch off device if it is installed in zone 0 and in
temperature class T5 and T6 and it fails!
Adjusting range
approx. ± 10 % f.s.
zero point and measuring span separately adjustable
Burden
Electrical data
Sum of maximum values in the intrinsically safe
circuits
Ui = 30 V
Ii = 100 mA
Pi = 0,7 W
The table shows the values for different pressure
transmitter signals:
signal mode
2-wire 4...20 mA
3-wire 0(2)...10 V
3-wire (0)4...20 mA
Ci [nF]
33
43
43
Li [µH]
20
30
30
UB - 14 V
20 mA
UB = operating voltage
Ra = max. permissible burden resistance (incl. lead)
Ra =
Burden influence
for 500 Ohm burden change: < 0.1 % f.s.
System filling
standard:
foodstuff oil
vegetable oil
medical white oil
silicon oil
FD1/FD2 (USDAH1 per FDA)
FP
FW (USDA-H1 per FDA)
Installation position
any, standard: adjusted at factory for vertical
mounting
Differential pressure transmitter PRESSURIX D.
Connection diagram
FAFNIR GmbH
Bahrenfelder Straße 19
22765 Hamburg
Germany
Phone: +49/40/39 82 07-0
Fax:
+49/40/390 63 39
E-mail:[email protected]
Internet:www.fafnir.com
Process Automation
Edition 12.13
Technical Changes Reserved
General
These operating instructions refer to installation, commissioning,
servicing and adjustment. Statutory regulations, valid standards,
additional technical details in the relevant data sheet, details of the
type plate and any additional certificates are to be observed along
with these operating instructions.
Safety instructions
 Installation, operation and maintenance of the instrument may be
executed by authorized personnel, only, using suitable
equipment.
 Warning: If the instrument is used incorrectly it is possible that
serious injuries or damage can occur!
 Prior to the disassembly of the pressure transmitter the impulse
ducts between the measuring transmitter and the process have to
be locked and relieved from pressure.
 The standard nominal pressure rating of the gasket should be
observed for all process connections. Operation outside the
allowed nominal pressure rating, especially with clamp
connections, is only possible with suitable clamps. In this case,
note DIN 32676 for stipulations on heat resistance.
 Pressure transmitters that are mechanically defective can cause
injuries or give rise to process faults. Suitable precautions should
be taken to avoid this.
CE marking
The CE marking on the instruments certifies compliance with valid
EU directives for bringing products to market within the European
Union. The following directives are met:
EMC directives
EMC
2004/108/EG
Pressure Equipment Directive
PED
97/23/EG
Mounting and operating
 Before mounting the instrument ensure that pressure range,
overpressure resistance, media compatibility, thermostability and
pressure port are suitable for the process at hand.
 Conduct process installation before electrical installation.
 Measuring instruments that should not have any oil or grease
residues in the pressure port are marked „Free of oil and grease“.
 Gaskets must be chosen that are suited to the process
connection and resistant to the measured medium.
 Check for pressure tightness when commissioning the
transmitter.
 Do not insulate the temperature decoupler, as this would reduce
the decoupling effect. Follow DIN 32676.
 Wire up the instrument with power switched off.
 Instruments with case protection IP67 and pressure ranges to 16
bar/ 250 psi are aerated through the connection cable. Place an
aeratable cable in an aeratable connection chamber during
mounting. This will compensate for atmospheric variations.
 The instrument can only be protected against electromagnetic
interference (EMC) if the conditions for screening, earthing, wiring
and potential isolation are met during installation.
 The mounting position should be taken into consideration when
checking the zero output. Standard transmitters are adjusted at
the factory for vertical mounting. Changes to the mounting
position can cause zero shifts at pressure ranges < 2 bar. These
drifts can be corrected by adjustment on site (see zero point
correction).
 When the instrument is opened any contact with the electrical
connections can affect the signals. This situation can be avoided
by switching off the supply voltage or by disconnecting the signal
circuit.
 The types of protection IP65/IP67 are only achieved, when
threaded rings, caps, plugs or fixing screws have been screwed
tight after electrical connection/parameterization.
 The instrument requires no maintenance.
Instructions for the operation with diaphragm seal
 To avoid soiling and damage remove protective cap or wrapping
in front of the separating diaphragm before mounting.
 Do not touch the flush mounted separating diaphragm, as there is
a danger of deformation at measuring ranges to 10 bar / 150 psi.
Instrument zero point and measuring characteristics could also be
affected.
 Measuring instrument and diaphragm seal are a closed system
and should not be separated .
 Avoid overtightening the process screw joints as this can result in
zero displacements at the pressure transmitter (fixing error).
 When using systems with capillary for vacuum measurements
always mount the pressure transmitter underneath the diaphragm
seal. The instruments are set at the factory with pressure
transmitter and diaphragm seal at the same height. Correct any
differences in height between diaphragm seal and pressure
transmitter arising from conditions on site on the pressure
transmitter when placing the instrument into operation (see zeropoint correction). When correcting for elevation be aware of the
adjustment limits.
 Be sure to install and securely fasten the capillary to avoid
vibrations. Roll up overlengths with a minimum radius of 20-25
cm. Shock and changes in temperature can impact on
measurements.
 Process and ambient temperatures can cause zero
displacements at the pressure transmitter with some system
designs. We can supply you with an error analysis.
Zero-point correction
Should the devices require re-adjustment you may access the
internal potentiometers for zero point and span underneath the
cover in standard housings, and by removing the knurled locking
ring in field housings. Trim the zero and span potentiometers using
a screwdriver (1.5 x 40) (10 turns = ± 10 % of measuring range). To
set the measuring span, you should apply an accurate reference
pressure.
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