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Summary of Contents for Metrohm 945 Professional Detector Vario
- Page 1 945 Professional Detector Vario 945 Professional Detector Vario – Conductometry Manual 8.945.8001EN / 2020-03-13...
- Page 3 Metrohm AG CH-9100 Herisau Switzerland Phone +41 71 353 85 85 Fax +41 71 353 89 01 info@metrohm.com www.metrohm.com 945 Professional Detector Vario 945 Professional Detector Vario – Conductometry 2.945.0010 Manual 8.945.8001EN / 2020-03-13...
- Page 4 Technical Communication Metrohm AG CH-9100 Herisau techcom@metrohm.com This documentation is protected by copyright. All rights reserved. This documentation has been prepared with great care. However, errors can never be entirely ruled out. Please send comments regarding possible errors to the address above.
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Page 5: Table Of Contents
Maintenance by Metrohm Service .......... 18 4.1.3 Operation ................18 4.1.4 Shutting down ..............19 Conductivity detector ............19 4.2.1 Maintenance ................. 19 4.2.2 Remedying blockage ............. 19 5 Troubleshooting Problems and their solutions ..........21 ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry... - Page 6 6 Technical specifications Reference conditions ............22 Conductivity detector ............22 Power connection ............... 23 Leak sensor ................. 23 Ambient conditions ............23 Housing ................24 Interfaces ................24 7 Accessories Index ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry...
- Page 7 Removing the bottle holder ............. 11 Figure 5 Mounting the bottle holder ............. 12 Figure 6 Connection detector–separation column ......... 14 Figure 7 Connection detector–suppressor ............. 15 Figure 8 Connection detector–MCS .............. 15 ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry...
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Page 9: Introduction
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction 1 Introduction Instrument description The 945 Professional Detector Vario – Conductometry is an intelli- gent stand-alone detector equipped with a high-performance conductivity detector. As a stand-alone detector, it can be combined with instruments such as those of the 940 Professional IC Vario family for which all available detec-... -
Page 10: Intended Use
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1.2 Intended use Intended use The 945 Professional Detector Vario – Conductometry is used as an inde- pendent conductivity detector in an IC system. It is used for the precise measurement of the conductivity during the ion chromatographic determi- nation of cations and anions. -
Page 11: Tubing And Capillary Connections
Damaged tubing ends lead to leakage. Appropriate tools can be used to loosen connections. Check the connections regularly for leakage. If the instrument is used mainly in unattended operation, then weekly inspections are manda- tory. ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry... -
Page 12: Flammable Solvents And Chemicals
1.4.1 Content and scope This document describes the 945 Professional Detector Vario – Con- ductometry, its assembly and connection to the IC instrument, as well as the installation, operation and maintenance of the individual components. Technical specifications, troubleshooting and information concerning scope of delivery and optional accessories make up the rest of the manual. -
Page 13: Symbols And Conventions
WARNING This symbol draws attention to a possible biological hazard. CAUTION This symbol draws attention to possible damage to instruments or instrument parts. NOTE This symbol highlights additional information and tips. ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry... -
Page 14: Overview Of The Instrument
2 Overview of the instrument Front Figure 1 Front Power LED Conductivity detector Standby indicator. Permanently installed. Detector inlet capillary Coupling Permanently installed. For connecting the detector outlet capillary. Labeled Cond. Eluent out. ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry... -
Page 15: Rear
Power socket 10 MSB connection sockets For connecting the power supply cable Two MSB connection sockets (labeled MSB 1 (6.2122.0x0). and MSB 2) for connecting MSB devices. (MSB = Metrohm Serial Bus) ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry... -
Page 16: Installation
Pinches in the leak sensor cable or the capillaries may lead to malfunctions. Unplug the leak sensor cable before you remove the base tray. ￭ Remove all the capillaries from the capillary ducts before you remove ￭ the base tray. ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry... -
Page 17: Figure 3 Removing The Base Tray
All of the cable connections on the rear have been disconnected. ￭ There are no loose parts in the instrument. ￭ The instrument is lying on its side, and the bottom surface is visible. ￭ ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry... - Page 18 Drainage tubing is disconnected from the drainage tubing connection ￭ of the bottle holder. The capillaries are removed from the guide ducts between the instru- ￭ ment and the bottle holder. Accessories 3 mm hex key (6.2621.100) ￭ ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry...
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Page 19: Figure 4 Removing The Bottle Holder
Stack other instruments in the required order. Mount the bottle holder (6.2061.100) onto the topmost instrument on the stack. Mounting the bottle holder Prerequisite The instrument is switched off. ￭ Accessories 3 mm hex key (6.2621.100) ￭ ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry... -
Page 20: Figure 5 Mounting The Bottle Holder
5 If one of the instruments in the stack is equipped with a leak sensor connection socket, connect the leak sensor (see manual of the IC instrument). 6 Restore any capillary connections that may have been removed. ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry... -
Page 21: Conductivity Detector
￭ "Connecting the detector inlet capillary to the suppressor", page 14). For instruments with sequential suppression, to the MCS (see "Con- ￭ necting the detector inlet capillary to the MCS", page 15). ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry... -
Page 22: Figure 6 Connection Detector-Separation Column
Connect the detector inlet capillary (7-1) and the capillary of the ￭ suppressor (7-2) labeled out to each other using a coupling (6.2744.040) (7-3) and two short PEEK pressure screws (6.2744.070) (7-4). ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry... -
Page 23: Figure 7 Connection Detector-Suppressor
Fasten the detector inlet capillary (8-1) with one long PEEK pres- ￭ sure screw (6.2744.090) (8-2) to the outlet of the MCS (8-3). Figure 8 Connection detector–MCS Detector inlet capillary PEEK pressure screw, long (6.2744.090) MCS outlet ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry... -
Page 24: Connecting The Instrument To A Computer
Unplug the power plug immediately if you suspect that moisture has ￭ gotten inside the instrument. Only personnel who have been issued Metrohm qualifications may ￭ perform service and repair work on electrical and electronic parts. Connecting the power cord... - Page 25 Do not use a not permitted power cord! 1 Plugging in the power cord Plug the power cord into the instrument's power socket. ￭ Connect the power cord to the power grid. ￭ ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry...
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Page 26: Operation And Maintenance
Metrohm. A shorter maintenance interval is recommended if you frequently work with caustic and corrosive chemicals. Metrohm Service provides professional technical consultation at all times for the maintenance and servicing of all Metrohm instruments. 4.1.3... -
Page 27: Shutting Down
Proceed as follows: 1 Detach the detector inlet capillary or the detector outlet capillary from the system. 2 Connect the detector outlet capillary directly to the outlet of the high-pressure pump. ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry... - Page 28 ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 4.2 Conductivity detector 3 In MagIC Net, set the maximum pressure of the high-pressure pump to 5 MPa. 4 Rinse the detector thoroughly with eluent. ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry...
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Page 29: Troubleshooting
Conductivity detec- No connection. Check the connection of the detector ￭ tor is not recognized cable. in the software Switch the instrument off and (after 15 sec- ￭ onds) on again. ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry... -
Page 30: Technical Specifications
Ring-shaped electrodes made from stainless steel Materials in Chemically inert PCTFE contact with eluent Maximum oper- 5.0 MPa (50 bar) ating pressure Cell tempera- 20 - 50 °C in increments of 5 °C ture ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry... -
Page 31: Power Connection
Ambient conditions Operation Ambient tem- +5 - +45 °C perature Humidity 20 - 80% relative humidity Storage Ambient tem- –20 - +70 °C perature Transport Ambient tem- –40 - +70 °C perature ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry... -
Page 32: Housing
2 MSB 8-pin mini-DIN (female) (for Dosino, stirrer, remote lines, etc.) Detector 2 15-pin high density DSUB (female) Cell recognition 1 on the front of the instrument Leak sensor 1 jack plug Further connec- 1 15-pin DSUB (female) ￭ tions ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry... -
Page 33: Accessories
The PDF file with the accessories data is created. NOTICE Once you have received your new product, we recommend download- ing the accessories list from the Internet, printing it out and keeping it together with the manual for reference purposes. ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry... -
Page 34: Index
Connection Mains ......... 23 Noise ........22 Detector Power connection ..16, 17, 23 Interface ......24 Power consumption ....23 Detector inlet capillary Power supply unit ..... 23 Connect ......13 ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry...
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