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.