Metrohm AG CH-9101 Herisau/Switzerland Tel. +41 71 353 85 85 Fax +41 71 353 89 01 Internet http://www.metrohm.ch E-Mail info@metrohm.ch 773 pH/mV Simulator Instructions for Use 8.773.1003 99.
Table of Contents Table of Contents 1 Overview ...................................................................................................................1 1.1 Instrument..................................................................................................................... 1 1.2 Purpose ........................................................................................................................ 2 1.3 Circuit diagram ..........................................................
1.1 Instrument 1 Overview 1.1 Instrument 6 7 8 9 773 pH/mV Simulator U/mV x10 x1 - + - + x100 + pH 20 C 0 25 40 60 80 100 10 8 pH=7 12 6 18 0 1 2 ~0,002 16 2 PT100 Ri /M 1000 14 4 ON/OFF U=0mV PT1000 20 14,3k 3 RE 4 WE WE 5 1 On/Off switch (with pilot lamp) The instrument switches itself off automatically after 50 minutes.
1.2. Purpose 1.2 Purpose With the 773 pH/mV Simulator, instruments which measure potentials can be aligned and checked, e.g. Titrinos, Titroprocessors, pH meters, ion meters, etc. In addition, the input impedance of the measuring amplifier and the insulation resistance of the accompanying cable can be checked. The temperature measuring input, the measuring input for polarized electrodes (Ipol) and conductivity meters can also be checked.
1.3 Circuit diagram 2 Operation Before you use the instrument for the first time you must insert the batteries. The battery compartment is found on the bottom panel of the instrument. Press the battery compartment tongue downwards to open the compartment. Insert the 4 batteries (Mignon 1.5V-LR6) according to the diagram in the battery compartment (take care that the plus poles are in the correct position!). The instrument switches itself off automatically after 50 minutes operation.
2.1. Aligning/Checking the potential U/mV 2.1 Aligning/Checking the potential U/mV 773 pH/mV Simulator U/mV x10 x1 - + - + x100 + pH 20 C 0 25 40 60 80 8 100 10 pH=7 12 6 4 ~0,002 18 PT1000 6.2150.040 Cable 20 0 PT100 Ri /M 1000 16 2 ON/OFF U=0mV 14 14,3k RE WE WE 1. Connect the socket "WE" of the 773 pH/mV Simulator with the measuring input of the instrument with the 6.2150.040 Cable. For instruments with an E-plug (e.g. 670, 636) use the 6.2150.030 Cable.
2.2 Aligning/Checking the pH 2.2 Aligning/Checking the pH 773 pH/mV Simulator U/mV x10 x1 - + - + x100 + pH 20 C 0 25 40 60 80 8 100 10 pH=7 12 6 4 ~0,002 18 PT1000 6.2150.040 Cable 20 0 PT100 Ri /M 1000 16 2 ON/OFF U=0mV 14 14,3k RE WE WE 1. Connect the socket "WE" of the 773 pH/mV Simulator with the measuring input of the instrument with the 6.2150.040 Cable. For instruments with an E-plug (e.g. 670, 636) use the 6.2150.030 Cable.
2.3. Checking the insulation of the separate reference point 2.3 Checking the insulation of the separate reference point 773 pH/mV Simulator U/mV x10 x1 - + - + x100 + pH 20 C 0 25 40 60 80 100 8 10 pH=7 12 6 18 6.2150.040 Cable 20 0 keep key pressed ~0,002 16 2 PT100 Ri /M 1000 14 4 ON/OFF U=0mV 14,3k PT1000 RE WE WE 6.2150.000 Cables 1. Set up the instruments as for checking the U value. 2.
2.5 Checking the temperature measuring input T/ C 2.5 Checking the temperature measuring input T/°C 773 pH/mV Simulator U/mV x10 x1 - + - + x100 + pH 20 C 25 40 60 80 8 100 0 10 pH=7 12 6 4 ~0,002 18 20 0 PT100 Ri /M 1000 16 2 ON/OFF U=0mV 14 PT1000 14,3k RE WE WE 2 x 6.2150.000 Cables 1. Connect the sockets "PT100" and "PT1000" of the 773 pH/mV Simulator with the temperature measuring input of the instrument with separate 6.2150.000 Cables. For instruments with DIN plugs (e.g.
2.6. Checking the polarization source 2.6 Checking the polarization source For microprocessor-controlled instruments it is better to check the polarization source with the aid of the instrument diagnosis; please refer to the ‘Instructions for Use’ of the instrument or titrator. The cable connections are shown below. 773 pH/mV Simulator U/mV x10 x1 - + - + x100 + pH 20 C 0 25 40 60 80 100 8 10 pH=7 12 6 ~0,002 16 2 18 20 0 PT100 Ri /M 1000 14 4 ON/OFF U=0mV PT1000 14,3k RE WE WE 6.
2.7 Checking conductivity meters 2.7 Checking conductivity meters 773 pH/mV Simulator U/mV x10 x1 - + - + x100 + pH 20 C 25 40 60 80 8 100 0 10 pH=7 12 6 4 ~0,002 18 20 0 PT100 Ri /M 1000 16 2 ON/OFF U=0mV 14 PT1000 14,3k RE WE WE 2 x 6.2150.000 Cables 1. Connect the sockets "14.3 kΩ" of the 773 pH/mV Simulator with the measuring input of the instrument with the two 6.2150.000 Cables. 2. Note the values for the cell constant and the temperature set on the instrument being checked.
2.8. Checking the 617 and 679 Rancimats 2.8 Checking the 617 and 679 Rancimats The measurement of the conductivity and the presentation on the printer can be checked channel by channel. The conductivity is read off from the display. The temperature of the heating block is not important. It may be necessary to create the starting condition (for 679 T> 50 °C).
3.1 Technical data 3 Appendix 3.1 Technical data Simulated pH values Range........................................................................................................ pH = 0...20 Divisions......................................................................................................... ∆pH = 1 Temperatures for pH compensation .............................. 0, 20, 25, 40, 60, 80, 100 ° C Simulated potential values Range U = 0...20 mV U = 0...200 mV U = 0...
3.2. Warranty and certificates 3.2 Warranty and certificates 3.2.1 Warranty The warranty regarding our products is limited to rectification free of charge in our workshops of defects that can be proved to be due to material, design or manufacturing faults which appear within 12 months from the day of delivery. Transport costs are chargeable to the purchaser. For day and night operation, the warranty is valid for 6 months.
3.2 Warranty and certificates 3.2.3 Certificate Certificate of Conformity and System Validation This is to certify the conformity to the standard specifications for electrical appliances and accessories, as well as to the standard specifications for security and to system validation issued by the manufacturing company. Name of commodity: Name of manufacturer: 773 pH/mV Simulator Metrohm Ltd.
3.2. Warranty and certificates Ionenanalytik • Analyse des ions • Ion analysis • Análisis iónico 773 pH/mV Simulator EU Declaration of Conformity The company Metrohm AG, Herisau, Switzerland, certifies herewith, that the following instrument: 773 pH/mV Simulator meets the CE mark requirements of EU Directives 89/336/EWG and 72/23/EWG.
3.3 Scope of supply and ordering information 3.3 Scope of supply and ordering information 773 pH/mV Simulator .................................................................................. 2.773.0010 including the following accessories: 1 Set of batteries, type 1.5V-LR6, 4 pcs ................................................................ 6.2133.000 2 Cables plug B/plug B .......................................................................................... 6.2150.
Index Index Accessories................................................ 15 Alignment ................................................... 4ff Appendix .................................................... 11 Batteries ....................................................... 3 Cable.......................................................... 15 CE sign....................................................... 14 Certificates ................................................. 13 Circuit diagram.......................
