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Summary of Contents for Pfeiffer Vacuum MPT 200
- Page 1 OPERATING INSTRUCTIONS Translation of the Original MPT 200 Digital Pirani/cold cathode gauge...
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Page 2: Telegram Example
Dear Customer, Thank you for choosing a Pfeiffer Vacuum product. Your new gauge is designed to support you in your individual application with maximum performance and without malfunctions. The name Pfeiffer Vacuum stands for high-quality vacuum technology, a comprehensive and complete range of top-quality products and first-class service. -
Page 3: Table Of Contents
Transporting the product Storing the product Installation Establishing vacuum connection Creating "RS-485" connection Interfaces Interface RS-485 Pfeiffer Vacuum protocol for RS-485 interface 6.2.1 Telegram frame 6.2.2 Telegram description 6.2.3 Telegram example 1 6.2.4 Telegram example 2 6.2.5 Data types Parameter set... - Page 4 10.2 Calibrating gauge 10.3 Replacing measurement system Malfunctions Shipping Recycling and disposal 13.1 General disposal information 13.2 Dispose of gauges Service solutions by Pfeiffer Vacuum Spare parts Accessories 16.1 Accessory information 16.2 Ordering accessories Technical data and dimensions 17.1 General 17.2 Technical data...
- Page 5 List of tables List of tables Tbl. 1: Applicable documents Tbl. 2: Variants Tbl. 3: Abbreviations used Tbl. 4: Permissible ambient conditions Tbl. 5: Features of the RS-485 interface Tbl. 6: Explanation and meaning of the parameters Tbl. 7: Overview of parameters of MPT gauge Tbl.
- Page 6 Measurement curve for Pirani-only operation and when using the correction factors Fig. 10: Components of the gauge Fig. 11: Replacing measurement system Fig. 12: MPT 200 with DN 25 ISO-KF Fig. 13: MPT 200 with DN 40 ISO-KF Fig. 14: MPT 200 with DN 40 CF-F 6/54...
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Page 7: About This Manual
Variants The part number is found on the rating plate of the product. Pfeiffer Vacuum reserves the right to make technical changes without prior notification. Information that relates to only one of the products is indicated accordingly. The figures in this document are not to scale. -
Page 8: Conventions
This section describes all the stickers on the product along with their meanings. Rating plate The rating plate is located on the back of the device. D-35614 Asslar Mod. MPT 200 PT R40 xxx 12345678 Range 5.0x10 - 1x10 hPa Input... -
Page 9: Abbreviations
About this manual 1.3.4 Abbreviations Abbreviation Explanation Atmosphere Correction factor for calculating the pressure of gases other than air Sensitivity of the Bayard-Alpert measurement system for nitrogen Electron collector Filament High vacuum Ion collector Cold cathode Light emitting diode Limited power source Mean sea level Pressure Pirani... -
Page 10: Safety
Safety instructions according to product life stages All safety instructions in this document are based on the results of a risk assessment. Pfeiffer Vacuum has taken into account all the relevant life stages of the product. Risks during installation DANGER Risk to life due to electric shock An improperly earthed product is potentially fatal in the event of a fault. - Page 11 ► Only operate the unit in a dry environment. ► Operate the unit away from fluids and sources of moisture. ► Do not switch on the unit if fluid has entered it. Instead contact Pfeiffer Vacuum Service. ► Always disconnect the power supply before cleaning the unit.
- Page 12 ► Only operate the unit in a dry environment. ► Operate the unit away from fluids and sources of moisture. ► Do not switch on the unit if fluid has entered it. Instead contact Pfeiffer Vacuum Service. ► Always disconnect the power supply before cleaning the unit.
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Page 13: Safety Precautions
Safety Risks during disposal WARNING Health hazard through poisoning from toxic contaminated components or devices Toxic process media result in contamination of devices or parts of them. During maintenance work, there is a risk to health from contact with these poisonous substances. Illegal disposal of toxic sub- stances causes environmental damage. -
Page 14: Proper Use
Tbl. 4: Permissible ambient conditions 2.5 Proper use The MPT 200 gauge is used for vacuum measurement of air, gases and gauges outside their explosion limits, within the range of 5 × 10 to 1000 hPa. Use the product according to its intended purpose ►... -
Page 15: Product Description
Product description 3 Product description 3.1 Function RS485 device status RS485 Fig. 1: Structure of the MPT gauge 1 RS-485 address selector switch "RS-485" connector 2 Status LED for the gauge 3.1.1 Gauge mode of operation The gauge consists of a cold cathode sensor (inverted magnetron) and a Pirani sensor whose measur- ing principle makes use of the pressure-dependent heat conductivity of gases. -
Page 16: Cold Cathode Measuring System
You will need all the data from the rating plate to safely identify the product when communicating with Pfeiffer Vacuum. ► To ensure clear identification of the product when communicating with Pfeiffer Vacuum, always keep all of the information on the rating plate to hand. -
Page 17: Transport And Storage
Transport and storage 4 Transport and storage 4.1 Transporting the product NOTICE Damage caused by incorrect transport Transport in unsuitable packaging or failure to install all transport locks can result in damage to the product. ► Comply with the instructions for safe transport. Packing We recommend keeping the transport packaging and original protective cover. -
Page 18: Installation
► Maintain the distances specified by the manufacturer of the pacemakers. – Pfeiffer Vacuum recommends a safety distance of at least 130 mm between the pacemaker and the product. ► Avoid the influence of strong magnetic fields by means of magnetic field shielding. -
Page 19: Creating "Rs-485" Connection
● Requirements of the earthed protective extra-low voltage (PELV) ● Limited power source (LPS) Class 2 ► Secure the line to the product. – Pfeiffer Vacuum measuring and control equipment complies with this requirement. NOTICE Property damage due to ground contact of electronics Disconnecting or connecting the "RS-485"... -
Page 20: Cross-Link Via Rs-485 Connection Using Omnicontrol
2. Make sure that all devices connected to the bus have different RS-485 device addresses. 3. Connect all devices with RS-485 D+ and RS-485 D- to the bus. Connect Pfeiffer Vacuum display and control units or a PC ► Use a connecting cable from the DigiLine accessories range. -
Page 21: Interfaces
3 GND 6.2 Pfeiffer Vacuum protocol for RS-485 interface 6.2.1 Telegram frame The telegram frame of the Pfeiffer Vacuum protocol contains only ASCII code characters [32; 127], the exception being the end character of the telegram C . Basically, a host (e.g. a PC) sends a tele- gram, which a device (e.g. -
Page 22: Telegram Description
Interfaces 6.2.2 Telegram description Data query --> Control command --> Data response / Control command understood --> Error message --> NO_DEF Parameter number n2–n0 no longer exists _RANGE Data dn–d0 outside the permissible range _LOGIC Logical access error 6.2.3 Telegram example 1 Query pressure value Current measured pressure (parameter [P:740], device address: "001") -->... -
Page 23: Data Types
Interfaces 6.2.5 Data types Data type Description Length Example l1 – l0 boolean_old Logical value (false/true) 000000 is equivalent to false 111111 is equivalent to true u_integer Positive whole number 000000 to 999999 u_real Positive fixed point number 001571 corresponds with 15.71 string Any character string with 6 charac-... -
Page 24: Parameter Set
All variables relevant for the function are stored as parameters in the gauge. Each parameter has a three-digit number and a description. The parameter can be accessed via Pfeiffer Vacuum display and control units or via RS-485 using Pfeiffer Vacuum protocol. -
Page 25: Control Commands
Parameter set 7.3 Control commands Description Functions Data type Access type Unit min. max. default Sensor on/off 0 = off 1 = on Switching ranges 0 = switch 1 = trans_LO Tbl. 8: Parameter set | Control commands 7.4 Status requests Description Functions Data Access... -
Page 26: Operation
Operation 8 Operation Once the supply voltage has been established, the measurement signal is available at the electrical connection. Meaning No power supply Lights up green Supply voltage OK, measuring mode, valid pressure values, sensor for low pressure range active Green flashing (1 Hz) Sensor for high pressure range active Lights up yellow Device function OK, but due to internal operations (e.g. -
Page 27: Selecting Switching Ranges
Operation Read order number [P:388] ► Read the order number via parameter [P:388]. 8.1 Selecting switching ranges The gauge offers the option of adapting the switchover range between the Pirani sensor and the cold cathode sensor as a function of the application. In this way it is possible to prevent: ●... -
Page 28: Tbl. 12: Correction Factor For Pirani-Only Operation
Operation Pressure range > 10 hPa (Pirani operation only) p [hPa] 1E-1 1E-2 1E-3 1E-4 1E-4 1E-3 1E-2 1E-1 [hPa] Fig. 9: Measurement curve for Pirani-only operation and when using the correction factors Gas type Correction factor (C) Nitrogen (N Hydrogen (H 0.58 Helium (He) -
Page 29: Switching Cold Cathode Sensor On/Off
Operation Gas type Correction factor (C) Krypton (Kr) 0.60 Xenon (Xe) 0.41 Dichlorodifluoromethane (CCl , R12) 0.28 Tetrafluoromethane (CF , R14) 0.44 Tbl. 13: Correction factors for cold cathode Using correction factors Reading and setting Pirani correction factor [P:742] ► Read the current correction factor via parameter [P:742]. ►... -
Page 30: Reading And Setting Relay And Switch-Points
Operation Switching CC sensor with display and control unit on/off ► Switch the CC sensor on or off as described in the operating instructions of the display and control unit. Switching CC sensor on/off [P:041] ► Set parameter [P:041] to "1" to switch on the CC sensor. ►... - Page 31 Operation Procedure 1. Bake out the gauge up to max. 160 °C at the flange. 2. Make sure that the pressure is < 10 hPa when baking out, because the Pirani sensor will give in- accurate measured values under the influence of the increased temperature. 3.
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Page 32: Dismantling
► Maintain the distances specified by the manufacturer of the pacemakers. – Pfeiffer Vacuum recommends a safety distance of at least 130 mm between the pacemaker and the product. ► Avoid the influence of strong magnetic fields by means of magnetic field shielding. - Page 33 Dismantling Prerequisites ● Vacuum system vented to atmospheric pressure ● Supply voltage switched off Disassembling the gauge 1. Disconnect the measurement cable from the gauge. 2. Disassemble the gauge from the vacuum system. 3. Fit the protective cap onto the connection flange. 33/54...
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Page 34: Maintenance
► Only operate the unit in a dry environment. ► Operate the unit away from fluids and sources of moisture. ► Do not switch on the unit if fluid has entered it. Instead contact Pfeiffer Vacuum Service. ► Always disconnect the power supply before cleaning the unit. -
Page 35: Calibrating Gauge
► Operate the unit away from fluids and sources of moisture. ► Take special precautions if there is a risk of dripping water. ► Do not switch on the unit if fluid has penetrated into it, instead contact the Pfeiffer Vacuum Serv- ice Center. -
Page 36: Replacing Measurement System
Maintenance ATM calibration 1. Put the gauge into operation. 2. Operate the gauge for at least 10 minutes at atmospheric pressure. 3. Via parameter [P:741], set the pressure adjustment point to "001" for high pressure. 4. Via parameter [P:740], set the pressure value to atmospheric pressure. –... - Page 37 Maintenance 7. Place the seal in the groove of the replacement measurement system. 8. Push the replacement measurement system with cover into the electronic unit. – Make sure the components are oriented correctly and make sure the seal is correctly fitted. 9.
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Page 38: Malfunctions
Malfunctions 11 Malfunctions Warranty Malfunctioning of the equipment as a direct result of contamination or wear, as well as wear parts, is not covered by the warranty. Malfunction Possible cause Remedy Communication error: Gauge No power supply Connect a data cable or pow- er supply pack. -
Page 39: Shipping
► Comply with the instructions for safe distribution. Decontamination subject to charge 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. -
Page 40: Recycling And Disposal
● Help to reduce the wastage of natural resources. ● Prevent contamination. 13.1 General disposal information Pfeiffer Vacuum products contain materials that you must recycle. ► Dispose of our products according to the following: – Iron – Aluminium –... -
Page 41: Service Solutions By Pfeiffer Vacuum
We are always focused on perfecting our core competence – servicing of vacuum components. Once you have purchased a product from Pfeiffer Vacuum, our service is far from over. This is often exactly where service begins. Obviously, in proven Pfeiffer Vacuum quality. - Page 42 Service solutions by Pfeiffer Vacuum 5. Prepare the product for transport in accordance with the provisions in the contamination declaration. a) Neutralize the product with nitrogen or dry air. b) Seal all openings with blind flanges, so that they are airtight.
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Page 43: Spare Parts
► Have the part number to hand, along with other details from the rating plate as required. ► Install original spare parts only. Designation Replacement measurement system MPT 200, DN 25 ISO-KF PT 120 210 -T MPT 200, DN 40 ISO-KF PT 120 211 -T... -
Page 44: Accessories
Power supply packs for wall- and standard rail mounting to supply power to DigiLine gauges OmniControl control unit Universal control unit for all products with Pfeiffer Vacuum RS-485 protocol. It supplies up to two trans- mitters and is equipped with a display for displaying the pressure of up to 16 measuring channels. -
Page 45: Tbl. 17: Accessories
Accessories Part number Selection field PE D50 000 0 OmniControl 200, rack unit with integrated power supply pack PE E50 000 0 OmniControl 200, table unit with integrated power supply pack Tbl. 17: Accessories 45/54... -
Page 46: Technical Data And Dimensions
Technical data and dimensions 17 Technical data and dimensions 17.1 General mbar Torr | mm Hg mbar 1 · 10 0.75 1000 1000 1 · 10 0.01 0.01 1 · 10 1 · 10 7.5 · 10 0.75 1 · 10 0.01 1000 Torr | mm Hg 1.33... -
Page 47: Tbl. 22: Rs-485 Interface
Technical data and dimensions Parameter Value Protocol ASCII, addressable (RS-485), Pfeiffer Vacuum protocol Data format Bidirectional data traffic, data word length 8 bits, 1 stop bit, no parity bit Baud rate 9600 Connection Binder M12 connector, 5-pole, A-coded Tbl. 22:... -
Page 48: Dimensions
Technical data and dimensions 17.3 Dimensions Ø 53 Ø 40 Fig. 12: MPT 200 with DN 25 ISO-KF Dimensions in mm Ø 55 Fig. 13: MPT 200 with DN 40 ISO-KF Dimensions in mm 48/54... -
Page 49: Mpt 200 With Dn 40 Cf-F
Technical data and dimensions Ø 70 Fig. 14: MPT 200 with DN 40 CF-F Dimensions in mm 49/54... -
Page 50: Ul/Csa Certification
The product MPT 200 - conforms to the UL standards UL 61010-1, 3rd edition (2016) Safety requirements for electrical equipment for measurement, control and laboratory use Part 1: General requirements - is certified to the CSA standards CSA C22.2 No. 61010-1-12, UPD1:2015, UPD2:2016... -
Page 51: Ec Declaration Of Conformity
This declaration of conformity has been issued under the sole responsibility of the manufac- turer. Declaration for product(s) of the type: Digital Pirani/cold cathode gauge MPT 200 We hereby declare that the listed product satisfies all relevant provisions of the following European Directives. Electromagnetic compatibility 2014/30/EU... -
Page 52: Declaration Of Conformity
EN IEC 61326-1:2021 EN IEC 63000:2018 The manufacturer's authorized representative in the United Kingdom and the authorized agent for compiling the technical documentation is Pfeiffer Vacuum Ltd, 16 Plover Close, In- terchange Park, MK169PS Newport Pagnell. Signature: Pfeiffer Vacuum GmbH Berliner Straße 43... - Page 53 53/54...
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