TELEVAC MC 300 2A, Instruction Manual

Page 1: ...ERMOCOUPLE CONVECTION VACUUM MEASUREMENT INSTRUMENT TELEVAC A DIVISION OF THE FREDERICKS COMPANY 2400 PHILMONT AVENUE HUNTINGDONVALLEY PA 19006 Phone 215 947 2500 fax 215 947 7464 e mail sales televac com web site www televac com 6 8000 002 REV A 1 ...

Page 2: ...ermocouple Convection Measurement Instrument 2 1 Instruction Manual 3 3 Sensor Cables sold separately 4 4 Sensors sold separately 5 1 Mounting kit 6 1 AC Power Cable Phone 215 947 2500 fax 215 947 7464 e mail sales televac com web site www televac com 6 8000 002 REV A 2 ...

Page 3: ... 07 CALIBRATION 08 CALIBRATION VERIFICATION 09 TROUBLESHOOTING 10 DIMENSION 11 SPECIFICATIONS 12 UNPACKING INSPECTION 13 WARRANTY INFORMATION 14 ORDERING INFORMATION PLEASE READ THIS MANUAL THOROUGHLY BEFORE USING THIS INSTRUMENT REPORT ANY PROBLEMS IMMEDIATELY Phone 215 947 2500 fax 215 947 7464 e mail sales televac com web site www televac com 6 8000 002 REV A 3 ...

Page 4: ... pressures between 1 millitorr 1 micron and 999 Torr 1 atmosphere 760 Torr sea level The vacuum measuring system consists of various gauge tubes which sense the vacuum an electronics unit and interconnecting signal power cables The customer must supply power at 115VAC 50 60 Hz 220 Volt operation is a factory selectable option The measured vacuum is displayed on the front panel LED displays See fig...

Page 5: ...ics Selectable Units Torr microns mBar or Pascal Gas compensation Argon Air Nitrogen Four process relays with individual assignable set points Analog outputs for each sensor Operator lockout switch Phone 215 947 2500 fax 215 947 7464 e mail sales televac com web site www televac com 6 8000 002 REV A 5 ...

Page 6: ...plays or recorder outputs the Set Up Test Operate and Up Down if enabled buttons are checked for operator interaction The Set Up button is used to sequence through all of the operator settable parameters Each depression of the Set Up button may change the function of the displays as well as the Up Down buttons Each time the Set Up button is pressed the data from the previous level is stored in non...

Page 7: ...d you require further assistance please contact Televac at the address on the title page of this manual This product has been designed and tested to offer reasonably safe service provided in it s installed operated and serviced in strict accordance with these safety instructions Failure to comply with these instructions may result in serious personal injury including death or property damage These...

Page 8: ...quire a technician to restore the product to its normal operation To reduce risk of fire or electric shock do not expose this product to rain or moisture Objects and Liquid Entry Never push objects of any kind into this product through openings as they may touch dangerous voltage points or short out parts that could result in a fire or electric shock Be careful not to spill liquid of any kind onto...

Page 9: ...Both are capable of withstanding 150 psi overpressure Figure 3 2A Thermocouple Sensor Tube Figure 4 4A Convection Sensor Tube Convection Sensor The convection sensor measures absolute pressures by determining the heat loss from a thermocouple heated to a constant temperature by a current source A second thermocouple compensates for ambient temperature changes and extends the vacuum measurement ran...

Page 10: ...AND SENSORS Sensor Installation It is desirable that the thermocouple and cold cathode sensor tubes be mounted on the vacuum system in a VERTICAL POSITION open end extending downward The 4A convection sensor MUST be installed in the VERTICAL POSITION The electronic unit is factory calibrated at time of order To ensure proper operating conditions it is necessary to use factory manufactured cables C...

Page 11: ...ances Wiring the instrument Sensor wiring The MC300 requires sensors cables sold separately for each channel Certain levels of calibration require a specific cable and sensor be used with channel 1 or 2 In this case the cable and sensor are marked for use as a set and must be used as such Otherwise the cables can be used with either rough vacuum channel To ensure measurement integrity and protecti...

Page 12: ...vices The relays are assignable to any one of the vacuum signal input channels through front panel software control There are three connections for each relay They are NORMALLY CLOSED NC COMMON C and NORMALLY OPEN O The operation mode of each is described as follows NORMALLY CLOSED In this state there is an electrical continuity path between terminals C and NC This continuity path is broken when t...

Page 13: ...er and instrument type in a four digit code The first two digits refer to the software version and the second two digits refer to the Instrument Sensor type summarized below The instrument will then perform a self diagnosis after which it will begin displaying vacuum measurements If the unit doesn t pass the self test an error code will appear Pressing the TEST OP button can clear the code but pro...

Page 14: ...h is in OFF position the switch is in the down position 2 Press the SETUP button once 3 Nitrogen N2 and Argon Ar display will flash 4 Press the SETUP a second time 5 The Pascal MBAR or TORR lamp will flash 6 Press the UP or DOWN arrow buttons to select the desired unit of measurement 7 Press the TEST OP button to complete the selection Note if the TEST OP switch is not pressed in 60 seconds the in...

Page 15: ... appear in the lower left display 11 Press the UP DOWN buttons to adjust the OFF value Press and hold the UP DOWN button to rapidly advance the OFF value 12 Press the SET UP button again and the next relay SP 2 will appear The sequence listed in steps 6 and 11 are repeated until all four relays have been assigned The MC300 will return to its normal operating mode after the fourth relay has been se...

Page 16: ...4 0 01 5 9 41 0 05 10 8 92 0 10 20 8 03 0 20 30 7 23 0 30 40 6 63 0 40 50 6 13 0 50 60 5 69 0 60 70 5 31 0 70 80 4 95 0 80 90 4 63 0 90 100 4 37 1 00 150 3 37 1 50 200 2 89 2 00 300 2 23 3 00 400 1 88 4 00 500 1 67 5 00 600 1 58 6 00 700 1 50 7 00 800 1 42 8 00 900 1 34 9 00 1000 1 26 10 00 2000 1 02 10 20 5000 0 92 10 20 10000 0 90 10 20 20000 0 88 10 20 CABLE 0 00 10 20 Analog Output 2A Linear 0...

Page 17: ...u 2 630 6 400 4 000 500 u 2 992 6 500 5 000 800 u 3 824 6 800 8 000 1 T 4 226 7 100 10 000 2 T 5 440 7 200 13 500 3 T 6 080 7 300 4 T 6 440 7 400 5 T 6 772 7 500 10 T 7 412 8 100 20 T 7 782 8 200 30 T 7 910 8 300 40 T 7 936 8 400 50 T 7 976 8 500 60 T 8 006 8 600 80 T 8 042 8 800 100 T 8 072 9 100 120 T 8 124 9 120 150 T 8 180 9 150 160 T 8 224 9 160 170 T 8 256 9 170 180 T 8 280 9 180 200 T 8 328...

Page 18: ... tube simulator in its place Turn power on and check the output voltage it should correspond to the pressure that is written on the sensor tube simulator s label 2 If you do not have a tube simulator it is still possible to check the operation of the instrument if you are able to reduce the system pressure to 10 5 Torr At this pressure the thermocouple and the convection sensors should display zer...

Page 19: ...rr 10 50 10 11 13 50 CHAPTER 7 TELEVAC Calibration All TELEVAC instrumentation is calibrated at the factory No further calibration at the customer s facility should be required For a reliable re calibration at a later date it is necessary to have a reference standard vacuum system whose pressure is known very accurately For such a calibration the instrument sensor tube and cable should be returned...

Page 20: ...TER 9 TELEVAC Troubleshooting Troubleshooting of the circuit or components is similar to any industrial electrical equipment i e checking for circuit continuity shorts grounds resistors values etc Generally those familiar with electrical equipment should have no difficulty location faults in either gauge or electronics unit by systematically proceeding through the circuit The enclosed diagram shou...

Page 21: ...7 7 75 UNIT Height 88 9 3 5 Width 184 15 7 25 DEPTH Excluding connectors 197 7 75 Including connectors approx 234 95 9 25 PANEL CUT OUT Height 92 86 3 66 Width 186 69 7 35 Phone 215 947 2500 fax 215 947 7464 e mail sales televac com web site www televac com 6 8000 002 REV A 21 ...

Page 22: ...APTER 12 TELEVAC Unpacking and Inspection Before each unit is installed or operated a quick inspection should be performed and the following noted Damage to the unit scratches nicks dent cracks Missing screws switches or switch hardware Broken barrier strips Broken or loose components within instrument Should any of the above problems be encountered contact the factory immediately Any unauthorized...

Page 23: ...rned to us with transportation charges prepaid and which our examination should disclose to our satisfaction to have been defective Those portions specifically exempt from this guarantee are gauge tubes batteries as well as meters which have been dissembled or physically damaged The Fredericks Company does not assume any other obligation than that stated in this warranty nor does it authorize any ...

Page 24: ...el Part Number 2A 1 8 NPT Nickel Brass 2 2100 10 2A 1 8 NPT Stainless Steel 2 2126 001 2a NW 16 KF Stainless Steel 2 2126 030 Other fittings available call factory 2A Cable 4A Cable 10 Foot 2 9800 077 2 9820 010 20 Foot 2 9800 078 2 9820 020 35 Foot 2 9800 079 2 9820 035 50 Foot 2 9800 080 2 9820 050 4A CONVECTION Measurement Range 10 3 TORR to Atmosphere Construction Nickel Plated Brass Stainless...