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14 Accessories

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14.1 Accessory information

Measurement cable

Measurement cable in different lengths, for connecting to a Pfeiffer Vacuum total pressure measuring
and control unit

Contact box

Cable socket for manufacturing the application-specific connecting cable

Filter disk

Filter disk to protect the measuring system against contamination in the event of potential contaminating
applications

Magnetic shielding

For shielding of the permanent magnet in the gauge, to protect people against magnetic radiation, for
example

Fig. 16:

Filter disk

1 Filter disk

14.2 Ordering accessories

Description

Order number

Measurement cable, 3 m

PT 448 250 -T

Measurement cable, 6 m

PT 448 251 -T

Measurement cable, 10 m

PT 448 252 -T

Mating connector, 6 pole

B4707283MA

Set of filter disks (10 x)

BN 846 250 -T

Magnetic shielding

PT 443 155 -X

Accessories

43/50

Содержание PKR 251

Страница 1: ...OPERATING INSTRUCTIONS EN Translation of the Original PKR 251 Pirani Cold cathode gauge...

Страница 2: ...pfeiffer vacuum de Further operating instructions from Pfeiffer Vacuum can be found in the Download Center on our website Disclaimer of liability These operating instructions describe all models and...

Страница 3: ...Scope of delivery 14 4 Transport and storage 16 4 1 Transporting the product 16 4 2 Storing the product 16 5 Installation 17 5 1 Establishing vacuum connection 17 5 2 Removing installing magnetic uni...

Страница 4: ...parts 41 14 Accessories 43 14 1 Accessory information 43 14 2 Ordering accessories 43 15 Technical data and dimensions 44 15 1 General 44 15 2 Technical data 44 15 3 Dimensions 46 ETL certification 47...

Страница 5: ...7 Conversion table 23 Tbl 8 Calibration factors for the pressure range 10 hPa 25 Tbl 9 Malfunctions 36 Tbl 10 Conversion table Pressure units 44 Tbl 11 Conversion table Units for gas throughput 44 Tb...

Страница 6: ...schmann cable socket 21 Fig 7 Relation between measuring signal and pressure 22 Fig 8 Pressure range 10 hPa Pirani operation only 24 Fig 9 Pressure range from 10 to 0 1 hPa 24 Fig 10 Removing gauge 28...

Страница 7: ...ese instruc tions Tbl 1 Applicable documents You can find these documents in the Pfeiffer Vacuum Download Center 1 1 2 Variants This document applies to products with the following article numbers Art...

Страница 8: ...ion steps The numerical list indicates an action with multiple necessary steps 1 Step 1 2 Step 2 3 1 3 2 Pictographs The pictographs used in the document indicate useful information Note Tip Wear labo...

Страница 9: ...um cpl Complete unit LED Light emitting diode LPS Limited power source MSL Mean sea level p Pressure PELV Protective extra low voltage s seconds WAF Width Across Flats U Measuring signal V output volt...

Страница 10: ...s to avoid damage to property Notes tips or examples indicate important information about the product or about this docu ment 2 2 Safety instructions Safety instructions according to product life stag...

Страница 11: ...nd escaping process medium could prove harmful to health Elastomer seals in KF connections e g O rings are not resistant to pressures 2500 hPa This could prove harmful to health due to escaping proces...

Страница 12: ...nce or repair purposes the health and safety of service personnel is at risk Comply with the instructions for safe distribution Risks during disposal WARNING Health hazard through poisoning from toxic...

Страница 13: ...t Parameter Value Relative humidity of air At temperatures up to 31 C max 80 At temperatures up to 40 C max 50 Mounting orientation Arbitrary Usage Only in indoor areas Installation altitude max 2000...

Страница 14: ...ssure across the entire measuring range The gauge applies the optimum measuring configuration to the respective pressure range 10 4 hPa 10 2 hPa 1000 hPa 5 10 9 hPa Cold Cathode Pirani Fig 1 Measuring...

Страница 15: ...ipment 1 Unpack the product 2 Remove the transport fasteners transport protection etc 3 Store the transport fasteners transport protection etc in a safe place 4 Check that the shipment is complete 5 E...

Страница 16: ...otections prior to each transport 4 2 Storing the product NOTICE Damage caused by improper storage Improper storage will lead to damage to the product Static charging moisture etc will lead to defects...

Страница 17: ...Pa This could prove harmful to health due to escaping process medium Do not open any tensioning pieces when overpressure is prevalent in the vacuum system Use suitable tensioning pieces for overpressu...

Страница 18: ...he measurement chamber Fit a seal with centering ring and filter for applications susceptible to pollution and to protect the measuring system against contamination Ensure that both trimming potentiom...

Страница 19: ...ic unit 2 Hexagon head set screw 5 Grub screw 3 Magnetic unit Removing the magnetic unit 1 Loosen the grub screw on the side of the electronic unit 2 Remove the electronic unit without exerting any ro...

Страница 20: ...he gauge Always connect the supply earth Pin 5 with the earth for the supply unit Always connect the shielding Pin 6 with the earth for the supply unit Required tools Crosshead screwdriver Torque wren...

Страница 21: ...shield 3 Connect the supply earth directly with the protective earth for power supply pack 4 Use a differential measuring input and separate signal earth and supply earth 5 Ensure that the potential d...

Страница 22: ...em has not ignited the signal output issues the Pirani measured value only If p 5 10 4 hPa display Pirani Underrange Pressure LED Operations mode Identification p 1 10 2 hPa Off Pirani operation 11 1...

Страница 23: ...8 1 0 0 75 100 7 4 10 7 5 1000 8 0 100 75 1 0 104 8 6 1000 750 1 0 105 8 6 9 5 Overrange 9 5 10 5 Sensor error Pirani faulty Tbl 7 Conversion table Converting measuring signal and pressure Validity ra...

Страница 24: ...8 2 4 6 8 Water vapor peff hPa Xe Kr Ar CO2 Freon 12 Fig 8 Pressure range 10 2 hPa Pirani operation only 6 4 2 6 4 2 6 4 2 10 4 8 6 4 2 10 6 2 4 6 10 5 10 4 Ar 10 5 8 6 4 2 10 6 8 2 4 6 8 2 4 6 2 4 6...

Страница 25: ...erving ignition delay Cold cathode measurement systems have an ignition delay when they are switched on This ignition de lay is longer for lower pressures and is typically in clean degassed units 10 5...

Страница 26: ...irani element The Pirani measurement system must be recalibrated In the low pressure range 1 10 3 hPa the pressure displayed is generally too low contami nation of the cold cathode measurement system...

Страница 27: ...re 1000 hPa in the vacuum system can lead to inju ries as a result of flying parts and escaping process medium could prove harmful to health Elastomer seals in KF connections e g O rings are not resis...

Страница 28: ...the gauge 2 Disconnect the measurement cable from the gauge 3 Recommendation Dismantle the magnetic unit of the gauge temporarily if disassembly is only possible with the magnetic unit removed This wi...

Страница 29: ...will void the warranty Contact the Pfeiffer Vacuum Service Center in the event of process related shorter mainte nance intervals First read through the sections completely Read the section with the wo...

Страница 30: ...nit 5 10 4 hPa or voltmeter 4 2 V 6 Rotate the potentiometer around a 1 3 of a turn in an anticlockwise direction 7 Rotate the rating plate back into its original position Compact FullRange TM Gauge V...

Страница 31: ...s and connections only when necessa ry Carry out all work in a well lit area Required tools Allen key WAF 1 5 Allen key WAF 3 Open end wrench WAF 7 Pincers for circlip Tweezers 2 1 15 16 14 13 12 5 6...

Страница 32: ...r Vacuum Service Always disconnect the power supply before cleaning the unit WARNING Health hazards due to cleaning agent The cleaning agent being used causes health hazards which could include for ex...

Страница 33: ...he degree required 2 Remove the old ignition aid with tweezers 3 Rub the anode pin with a polishing cloth until shiny taking care not to bend the anode Do not treat the ceramic with mechanical means 4...

Страница 34: ...3 Open end wrench WAF 7 Pincers for circlip Mounting tool for the ignition aid Tweezers Spare parts required Repair kit BN 846 238 T Required consumables Dry nitrogen for blowing out 1 2 3 Fig 14 Mou...

Страница 35: ...orrectly in the pin insert 11 Carry out a visual inspection to ensure that the anode pin is central to the middle borehole of the pin insert Max permissible eccentricity 0 5 mm 12 Perform a leak test...

Страница 36: ...ng signal 4 0 V Pirani underrange Cold cathodes dis charge has not ignited Wait until the gas discharge ig nites Complete failure is possi ble in the event of contamina tion with insulating layers Gau...

Страница 37: ...arge Pfeiffer Vacuum decontaminates products not clearly declared Free of contamination at your expense Ship product safely Do not ship microbiological explosive or radioactively contaminated products...

Страница 38: ...product and its components must be disposed of in accordance with the applica ble regulations relating to environmental protection and human health with a view to reducing natural resource wastage and...

Страница 39: ...ity You can find more detailed information and addresses on our homepage in the Pfeiffer Vacuum Service section You can obtain advice on the optimal solution for you from your Pfeiffer Vacuum represen...

Страница 40: ...duct in suitable stable transport containers only e Maintain applicable transport conditions ERKL RUNG KONTAMINIERUNG 6 Attach the contamination declaration to the outside of the packag ing 7 Now send...

Страница 41: ...em 5 1 item 6 1 BN 846 239 T Repair kit PKR 251 complete Item 2 1 item 3 3 item 4 1 item 5 1 item 6 1 item 7 1 BN 846 238 T Repair kit cold cathode only Item 2 1 item 3 3 item 4 1 item 5 1 item 6 1 BN...

Страница 42: ...auge DN 40 ISO KF 4 PT R26 001 A Exchange gauge DN 40 CF F 5 PT R26 002 A 3 Return the defective gauge to Pfeiffer Vacuum 4 Return the defective gauge to Pfeiffer Vacuum 5 Return the defective gauge t...

Страница 43: ...o protect the measuring system against contamination in the event of potential contaminating applications Magnetic shielding For shielding of the permanent magnet in the gauge to protect people agains...

Страница 44: ...hPa Maximum pressure absolute 10000 hPa limited to inert gases and temperatures 55 C Measuring principle Pirani cold cathode Accuracy approx 30 in the range of 1 10 8 100 hPa Repeatability approx 5 in...

Страница 45: ...ing Cable length Max 75 m 0 25 mm2 conductor max 100 m 0 34 mm2 conductor max 300 m 1 0 mm2 conductor Grounding concept see chapter Establishing electric connection page 20 Vacuum connection and signa...

Страница 46: ...5 Anode Molybdenum Mo Ignition aid Stainless steel 1 4310 Pirani gauges Nickel Ni gold Au Pirani filament Tungsten W Tbl 17 Substances in contact with the media 15 3 Dimensions Compact Full RangeTM Ga...

Страница 47: ...3103457 ETL LISTED The product PKR 251 conforms to the UL standard UL 61010 1 is certified to the CAN CSA standard CAN CSA C22 2 No 61010 1...

Страница 48: ...30 EU Restriction of the use of certain hazardous substances 2011 65 EU Restriction of the use of certain hazardous substances delegated directive 2015 863 EU Harmonized standards and applied national...

Страница 49: ...49 50...

Страница 50: ...BG5155 ed D Date 2206 P N BG5155BEN...

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