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Maintenance

2000 XTC

Figure 4-1: Cable Identification in Transmitter

4.3 Fuse Replacement

There are four fuses installed in the galvanic isolator module for

circuit protection. The main fuse (F1) is accessible after removing the fuse
holder cover. All other fuses require separating the 2 galvanic isolator
modules. See Figure 4-2 for fuse identification. Table 4-1 lists the fuse
rating, TAI part number, and the applicable circuit it serves to protect.

Table 4-2: Fuses

Fuse Circuit

Fuse

Rating

TAI P/N

F1

24 VDC
Main Power

400 mA
Fast-
Acting
5x20

F1668

F2 &
F3

Heater Circuit /
Transmitter Power

160 mA
Fast-
Acting
5x20

F1697

F4

Output Signal

50 mA
Fast-
Acting
5x20

F1670

Teledyne Analytical Instruments

24

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Содержание 2000 XTC

Страница 1: ...resent in this monitoring system Personal protective equipment may be required when servicing this instrument Hazardous voltages exist on certain components internally which may persist for a time eve...

Страница 2: ...or weight of any parts in so far as such alterations do not adversely affect our warranty Important Notice This instrument provides measurement readings to its user and serves as a tool by which valu...

Страница 3: ...using a known gas mixture that is representative of the customers process Using this instrument to analyze any other gas mixture may result in serious error Consult the factory for additional informat...

Страница 4: ...ION HOT SURFACE WARNING This warning is specific to heated components within the instrument Failure to heed the warning could result in serious burns to skin and underlying tissue WARNING ELECTRICAL S...

Страница 5: ...onally some instruments are customized for a particular application or features and or options added per customer requests Please check the front of this manual for any additional information in the f...

Страница 6: ...Sensor 5 2 3 Sample System 7 2 4 Electronics and Signal Processing 9 2 4 1 Transmitter 9 2 4 2 Galvanic Isolator 10 2 5 Connection Cable 11 Installation 12 3 1 Unpacking the Transmitter 12 3 2 Mounti...

Страница 7: ...smitter Maintenance 22 4 1 Routine Maintenance 22 4 2 Troubleshooting 22 4 3 Fuse Replacement 24 Appendix 26 Specifications 26 Recommended Spare Parts List 28 Reference Drawings 28 Index 29 Teledyne A...

Страница 8: ...000 XTC External Wiring Diagram 11 Figure 3 1 Mounting Dimensions for Sensor Unit 13 Figure 3 2 Mounting Dimensions for Interface Unit 14 Figure 3 3 Power and Output Connections to Galvanic Isolator 1...

Страница 9: ...l Conductivity Transmitter List of Tables Table 3 1 Heater Temperature 19 Table 3 2 Concentration from Output Current 21 Table 4 1 Troubleshooting 222 Table 4 2 Fuses 244 Teledyne Analytical Instrumen...

Страница 10: ...always exists The customer should ensure that the principles of operating of this equipment are well understood by the user and that the instrument as well as any approved support equipment is properl...

Страница 11: ...pable of measuring the gas concentration of a species in a binary or pseudo binary mixture of gases over a concentration range The specific species and gas mixture as well as the analysis range employ...

Страница 12: ...ea use Nema 4X IEC 60529 and IP 66 rated sensor housing ATEX approved for EEx ib IIC T3 Europe 4 20 mA signal output proportional to the concentration of one of the gases in the mixture Long lifetime...

Страница 13: ...oint which can be a hazardous area and is where the sample gas input is converted into an electrical output signal The galvanic isolator module contains the 24V power supply the power isolation safety...

Страница 14: ...Operational Theory 2000 XTC Teledyne Analytical Instruments 4...

Страница 15: ...signed to measure the concentration of a component in a binary stream of gas It can be used to determine the concentration of a sample stream containing a composite mixture of impurities by comparing...

Страница 16: ...icated directly on the silicon and is used to compensate for changes in the ambient temperature Depending on the sample gas density exposing the sensor to the gas will either increase the membrane tem...

Страница 17: ...2 and a reference drawing is included among the drawings at the rear of the manual 2 3 Sample System A suitable external sample system must be provided by the customer The external sample system deli...

Страница 18: ...idual gas pockets that can interfere with accurate analysis Stainless steel 1 4 tube fittings are installed 6mm are available for connecting the external sample system to the transmitter For metric sy...

Страница 19: ...d accessible by removing the front cover The transmitter is powered from two 2 separate 15VDC lines from the galvanic isolator module The galvanic isolator incorporates a 24VDC power supply The proces...

Страница 20: ...in the operating range of the instrument 0 to 50 C Electronics for the temperature control are housed in the transmitter module Power is supplied to the heaters by pins 2 3 for heater 1 and 1 4 for he...

Страница 21: ...n the safety barrier and transmitter modules is accomplished with a 5 wire cable supplied as part of the instrument The transmitter end of the cable is fitted with an ATEX approved 5 wire connector wh...

Страница 22: ...mming from power circuitry associated with the transmitter in hazardous locations by limiting the energy available for ignition This instrument must be installed properly and all cables wires connecto...

Страница 23: ...This should be taken into consideration when determining mounting location Also make sure there is adequate room to make the sample system connections Once a suitable location has been determined flus...

Страница 24: ...itter 3 4 Gas Connections The unit is manufactured with 1 4 inch stainless steel tube fittings for the inlet and outlet gas connections Refer to Figure 2 2 in Section 2 3 for a recommended sample syst...

Страница 25: ...exhaust stream vents to an appropriately controlled area if required The exhaust should be vented to atmospheric pressure or returned to the process line Use care not to create backpressure in the ve...

Страница 26: ...nnection cable is a 5 wire cable which delivers power to the heaters and drives the electronics in the transmitter module It also passes a 0 4 mA linearized signal back from the sensor circuit to the...

Страница 27: ...fore calibrating the transmitter Make sure that suitable sources of zero and span gas are connected to the transmitter either via a switching manifold or separately zero followed by span gas See secti...

Страница 28: ...d proceed with Zero Calibration Remove the 4 screws securing the transmitter cover and lift off the top cover To adjust the internal temperature of the transmitter 1 Allow span gas to flow into the tr...

Страница 29: ...alibration requires the use of a prepared gas known to be free of the gas species to be analyzed If possible the calibration gas should be the background gas used in your application Note This instrum...

Страница 30: ...e screwdriver until the reading is the zero gas value or 4 mA 5 It may be necessary to recalibrate the zero after span calibration 3 6 3 Span Calibration Span calibration requires the use of a prepare...

Страница 31: ...han the known concentration adjust the span potentiometer R38 as shown in Figure 3 5 until the readout is correct If using a mA current read out device refer to Table 3 1 to determine concentration fr...

Страница 32: ...rts The cell is enclosed in an insulated compartment that is readily accessible after removing the transmitter cover There are three 3 PC boards handling the electronics one in the transmitter module...

Страница 33: ...h 200mA fuse See Section 4 3 Check power cable in transmitter module See Figure 4 1 Check external signal read out device connection Erratic output signal Instrument out of calibration or improperly c...

Страница 34: ...other fuses require separating the 2 galvanic isolator modules See Figure 4 2 for fuse identification Table 4 1 lists the fuse rating TAI part number and the applicable circuit it serves to protect Ta...

Страница 35: ...cover and power up instrument Figure 4 2 Fuse Location To remove the other fuses Disconnect power to the instrument Remove the interface unit from the mounting rail or enclosure The two galvanic isol...

Страница 36: ...normal Ranges Specific application determined by user See Section 1 2 for example ranges Sensor Thermal conductivity sensor Microsens MTCS 2201 Accuracy 2 of full scale at constant temperature and pr...

Страница 37: ...ory set to 20 2 C User settable Calibration Controls Zero span and temperature control Fuses Input power circuit 400 mA Output Signal Circuit 50 mA Heater Circuit 2 160 mA Mounting transmitter Wall mo...

Страница 38: ...2157 to 6mm tubing adapter SS A minimum charge is applicable to spare parts orders Note Orders for replacement parts should include the part number if available and the model and serial number of the...

Страница 39: ...ns 15 enclosure 26 external sample system See sample system factory calibration 10 features 2 figures listing viii flow control 7 15 flow rate 7 15 26 fuse 10 24 27 fuse location 25 fuse replacement 2...

Страница 40: ...tem 7 sensor 2 5 6 9 10 16 26 sensor membrane See membrane serial number iii short circuit current 10 signal output 26 signal processing 5 9 span gas 6 span potentiometer See potentiometer spare parts...

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