Terranova Scientific 921 Instruction Manual Download

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D U N I W A Y S T O C K R O O M C O R P .

W W W . D U N I W A Y . C O M

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Instruction Manual

Terranova Scientific Model 921

Cold Cathode Gauge Controller

for use with HPS Inverted Magnetron Vacuum Gauges

permission in writing from Terranova Scientific, Inc.

TELEPHONE: 650-969-8811 TOLL-FREE (U.S. only): 800-446-8811 FAX: 650-965-0764 EMAIL: [email protected]

www.duniway.com

Summary of Contents for 921

Page 1: ...ler for use with HPS Inverted Magnetron Vacuum Gauges Copyright 1998 by Terranova Scientific Inc All rights reserved including the right of reproduction in whole or part in any form without permission in writing from Terranova Scientific Inc TELEPHONE 650 969 8811 TOLL FREE U S only 800 446 8811 FAX 650 965 0764 EMAIL info duniway com www duniway com ...

Page 2: ...e Gauge Tube D Connect the Gauge Tube E Attach the Gauge Cable F Make Relay Connections G Make Accessory Connections H Check Supply Voltage I Attach the Power Cord III Operation page 12 A Turn Power On B Front Panel Controls C Analog Output D Serial Interface IV Maintenance page 17 A Changing Fuses B Schematic Diagrams TELEPHONE 650 969 8811 TOLL FREE U S only 800 446 8811 FAX 650 965 0764 EMAIL i...

Page 3: ...ation Alert page 22 List of Figures Figure 1 Model 921 Front Panel page 5 Figure 2 Model 921 Rear Panel page 5 Figure 3 Model 921 Rear Panel CE Model page 6 Figure 4 Model 921 Dimensions page 6 Table 1 Accessory Connector Pin Assignments page 11 TELEPHONE 650 969 8811 TOLL FREE U S only 800 446 8811 FAX 650 965 0764 EMAIL info duniway com www duniway com ...

Page 4: ...e Terranova 921 Cold Cathode Gauge Controller Display to measure the pressure of combustible gas mixtures The gauge operates with an ionized gas discharge and it is possible that this discharge may cause ig nition of combustible mixtures which then might explode and cause dam age to equipment and injury to personnel Chemicals WARNING Many organic cleaning solvents such as acetone produce fumes tha...

Page 5: ...O M C O R P W W W D U N I W A Y C O M 5 of 22 Figure 1 Model 921 Front Panel Figure 2 Model 921 Rear Panel ser no 3 10 TELEPHONE 650 969 8811 TOLL FREE U S only 800 446 8811 FAX 650 965 0764 EMAIL info duniway com www duniway com ...

Page 6: ... 3 Model 921 Rear Panel CE Model Figure 4 Model 921 Dimensions ser no 3 80 inch 96 5 mm 6 5 inch 165 mm 1 85 inch 47 mm 3 60 inch 91 4 mm 1 78 inch 45 2 mm Mounting Cutout TELEPHONE 650 969 8811 TOLL FREE U S only 800 446 8811 FAX 650 965 0764 EMAIL info duniway com www duniway com ...

Page 7: ...3 x 10 10 Torr mBar to 10 2 Torr mBar 3 Units of Display torr or mBar user selectable 4 Vacuum Gauge HPS Inverted Magnetron gauges series 421 or I Mag series 423 5 Operating Temperature Range 2 to 50 deg Celsius 6 Pressure Display 4 digit bright LED 10 mm high 7 Display Indicators red LED for set points and other parameters 8 Process Control Set Points two adjusted by front panel push button 9 Pro...

Page 8: ...ype Bussman GDB 1A or GDC 1A Littlefuse 217 001 or 218 001 14 Weight 1 lb 0 5 kg 15 Mounting Side clips are provided for panel mounting in standard 1 8 DIN cutout 16 Environmental Considerations not for use with explosive or corrosive gases 17 Vacuum gauge tube the HPS Cold Cathode Inverted Magnetron and cable are available from Duniway Stockroom or HPS Duniway Stockroom tel 800 446 8811 or 650 96...

Page 9: ...ount ing clip attaches to each of the sides of the controller unit To attach the clip slide the beveled surfaces of the clip under the cutout on the side of the box and push the clip toward the back of the unit until the central tongue locks the clip in place Then slide the unit into the panel the clips will hold the unit in place Be sure to leave enough clearance at the back of the controller uni...

Page 10: ... controller SET PT 1 and SET PT 2 The set points control two relays that are accessible through the connector on the back of the controller SET PT 1 controls relay 1 and SET PT 2 controls relay 2 Relay contacts are available through the D15 Accessory Connector See Table 1 below on page 11 G Make Accessory Connections The 15 pin D sub Accessory Connector is on the rear panel of the 921 see Table 1 ...

Page 11: ...y normally open pin 4 Set Point 2 relay normally closed pin 5 Set Point 2 relay common pin 6 Set Point 2 relay normally open pin 7 Tx RS 232 signal out of the 921 9600 N 8 1 pin 8 Rx RS 232 signal into the 921 pin 9 Ground RS 232 and analog common pin 10 no function pin 11 no function pin 12 no function pin 13 Analog Output 1Kohm 0 5 volts per decade pin 15 no function pin 16 no function TELEPHONE...

Page 12: ...ital display will flash to indicate the value of the parameter being adjusted Each push of a button will give a short beep from the loudspeaker to confirm the button was pushed If you have reached the limit of adjustment or if the button push is not allowed the loud speaker will give a long beep Following is detail description of the parameter selection and adjustment 1 Set Pt 1 High This sets the...

Page 13: ... between Torr and mBar 6 Calibrate This allows the user to modify the reading for either gauge by multiplying by a value between 0 500 and 2 000 This is convenient for calibration of the gauge or for making adjustments for different gas factors We suggest you use this adjustment only if you have reliable calibration da ta The multiplier is internal and is not seen by the user The digital display s...

Page 14: ...calculated from V 0 50 log10 1010 Pressure where V is the Analog Output in volts P is the pressure in Torr or mbar Some examples follow because of normal tolerances in the electronics there may be minor dif ferences in the values you observe compared to those shown displayed pressure Analog Output volts OFF or OP 0 00 1 0 x 10 10 Torr mBar or less 0 00 1 0 x 10 9 Torr or mBar 0 50 3 0 x 10 9 0 74 ...

Page 15: ... 2 page 4 and fig 3 page 5 pin 7 is Tx signal from the 921 to the terminal pin 8 is Rx signal from the terminal to the 921 pin 9 is return ground The serial port allows reading pressure and other parameters of the 921 it is not possible to mod ify stored parameters over the serial port The following commands are used in the 921 1 Pressure To read the pressure Send p ASCII value 112 the 921 sends p...

Page 16: ...the same format as for set point 1 above 5 Model and Software Revision To read software identification Send v ASCII value 118 the 921 returns the model number of the instrument and the revision number as in the following example 921 ver 1 02 6 High Voltage Control ON version 1 08 and later only To turn the High Voltage On Send n ASCII value 110 the 921 returns OK to acknowledge receipt of the comm...

Page 17: ...he fuses are facing you Check both fuses replace the burnt out fuse with a fuse of the appropriate rating refer to Specifications section Reinsert the fuse assembly into the power module push it in until the ears click into place Replacement fuse type 5 mm X 20 mm regular 1 amp manufacturer fuse type Bussman GDB 1A or GDC 1A Littlefuse 217 001 or 218 001 B Schematic Diagrams Because of the proprie...

Page 18: ... turning the power off and then on again If it fails again call Duniway Stockroom If fuses burn out check to see that the proper voltage has been supplied to the power input module If fuses burn out repeatedly call Duniway Stockroom TELEPHONE 650 969 8811 TOLL FREE U S only 800 446 8811 FAX 650 965 0764 EMAIL info duniway com www duniway com ...

Page 19: ...rst contact Duniway Stockroom to get au thorization Then pack the instrument securely Use the original packaging if it is available If you do not have appropriate packing materials a commercial packing and shipping firm can provide them Notes TELEPHONE 650 969 8811 TOLL FREE U S only 800 446 8811 FAX 650 965 0764 EMAIL info duniway com www duniway com ...

Page 20: ... to Duniway Stockroom for warranty service Buyer will pre pay shipping charges and will pay all duties and taxes for products returned to Duniway Stockroom Duniway Stockroom will pay for return of products to Buyer except for products returned to a Buyer from a country other than the United States LIMITATION OF WARRANTY The foregoing warranty does not apply to the defects resulting from 1 Improper...

Page 21: ...auge Controller to which this declaration relates are in conformity with the following standards or normal documents EMC Directive 89 336 EEC 93 68 EEC Electromagnetic Compatibility Standards EN 50081 1 1992 EN 50082 1 1993 Low Voltage Directive 73 23 EEC 93 68 EEC Electrical Technical Safety Standard EN 61010 1 1993 A2 1995 following the provisions of the EMC directive 89 336 EEC August 30 1998 b...

Page 22: ...apid Venting to Atmosphere with Gauge On If the vacuum system is vented rapidly from vacuum to atmospheric pressure such as in a an accidental dumping of the system while the 921 I Mag is operating automatic shut off of the high voltage may not occur The pressure can move so rapidly through the range where the gauge would normally turn off automatically that the correct sample is not collected for...

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