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HVG-2020B Instruction Manual

 

 EAR99 Technology Subject to Restrictions Contained on the Cover Page

 

Page 30 of 40 

 

BAUD=

 (Write Only) Set the baud rate 

Sets the baud rate and stores it in non-volatile memory. Valid options are: 9600, 19200, 
38400, 57600 and 115200 

H

 High Setpoint (Read/Write) 

This is the value above which the high setpoint will become active. The same as S21. 

L

 Low Setpoint (Read/Write) 

This is the value below which the low setpoint will become active. The same as S20. 

U

 Pressure Units (Read/Write) 

Returns the current pressure unit name in text. The same as S22. To set the pressure unit 
that the gauge is displaying, a numeric value is used as follows: 

1 = TORR 
2 = MBAR 

3 = KPA 
4 = PSIA 
5 = PSIG 
6 = ATM 

7 = BAR 
8 = PA 

S112=

 Verbose Replies (Write Only) 

Enables (Non-Zero value) or disables (0) Verbose Replies. 

ENABLE VERBOSE 

Display descriptive text and units. Same as S112=1. 

DISABLE VERBOSE

 Display values only. Same as S112=0. 

ENABLE RS485 

Configure the serial port for RS485 communication 

DISABLE RS485 

Configure the serial port for RS232 communication 

IS485TERMINATED

 Read whether termination resistors are engaged 

NOTERMINATERS485

 Disable termination resistors on RS485 communications 

TERMINATERS485

 Enable termination resistors on RS485 communications 

RESTOREFACTORYDEFAULTS

 Reset variables to the values stored at the factory. 

 

Reset values include: Product config (S64), Piezo calibration curve settings, Pirani 
calibration settings, Gas calibration settings, Temperature settings, Analog output settings 

GPV

 Get Piezo Value 

Gets the current Piezo Value in counts. Can be used in conjunction with S15= to zero the 
Piezo only. 

Summary of Contents for HVG-2020B

Page 1: ... 9 0 0 1 C E R T I F I E D www teledyne hi com Use and Disclosure of Data Information contained herein is classified as EAR99 under the U S Export Administration Regulations Export reexport or diversion contrary to U S law is prohibited ...

Page 2: ...yne hi com for WEEE disposal guidance Description of Symbols and Messages used in this manual WARNING indicates a hazardous situation which if not avoided could result in death or serious injury Do not proceed beyond a WARNING notice until the indicated conditions are fully understood CAUTION indicates a hazardous situation which if not avoided could result in minor or moderate injury Do not proce...

Page 3: ...AL CONNECTIONS 10 2 3 1 Connector 10 2 3 2 Power Input 10 2 3 3 Analog Output 11 2 3 4 Setpoints 17 2 3 5 Serial Connection 18 2 3 6 USB Connection 18 2 3 7 TTL Serial Connection 18 PUSH BUTTON OPERATION 19 LED OPERATION 19 QUICK START 20 3 DISPLAY OPERATION 21 GENERAL 21 VIEW ICON 21 MENU BUTTON 22 3 3 1 Screen Orientation 23 3 3 2 Set Zero 23 3 3 3 Device Info 23 3 3 4 Analog Output 23 3 3 5 Gas...

Page 4: ...n Software 27 5 2 3 The Sensor Lists 27 5 2 4 Command Prompt 27 5 2 5 Command Format 28 5 2 6 RS232 RS485 Mode 28 5 2 7 Response Format 28 5 2 7 1 Response Line Termination 28 5 2 7 2 RS485 Mode Responses 29 5 2 8 Commands 29 5 2 8 1 Reporting Commands 29 5 2 8 2 System Commands 29 5 2 8 3 State Commands 32 5 2 8 4 Sensor List Commands 33 6 TROUBLESHOOTING 38 AUTHORIZED MAINTENANCE 38 TROUBLESHOOT...

Page 5: ... communication The HVG 2020B VISION offers an additional color touch panel display The two sensors exhibit excellent stability and their outputs are characterized and digitally linearized to provide superior accuracy The pressure signal is made available on the digital port and display The signal is also converted to the desired analog signal linear logarithmic voltage current and this signal is p...

Page 6: ...y 300 series stainless steel with welded construction and glass to metal seals Using metal seal vacuum connections eliminates the permeation degradation and outgassing problems of elastomer O rings FLEXIBLE POWER REQUIREMENTS The HVG 2020B can operate with any power supply capable of providing 12 36 VDC via the 9 pin D connector or a 2 mm bayonet jack connection DIGITAL COMMUNICATIONS The HVG 2020...

Page 7: ...ctions will be larger Maximum Pressure Maximum operating 1000 Torr Maximum overpressure 2000 Torr 25 psig no change in performance Burst pressure 3000 Torr 45 psig Operating Temperature 20 C to 70 C WARNING Operation above 60 C ambient may result in case temperatures capable of causing burns Operation near the temperature extremes for more than 48 hours could result in display degradation Humidity...

Page 8: ...ply P N 12 01 169 is available to directly power the HVG 2020B through the 2mm bayonet jack 1 3 2 Cables The HVG 2020B instruments come with a 9 pin D connector A Hastings cable Part CB AF 8 HVG9M is available to interface with the standard 15 pin D connector found on Hastings power supplies Cables are available from Hastings in various lengths as well A variable length cable with bare leads Part ...

Page 9: ... interfere with proper sealing Contamination can impair the operation of the gauge If your vacuum environment is highly contaminated or has unique fitting requirements a Hastings filter or special adapter may be needed Please contact the Hastings Instruments Sales Department for assistance in your system configuration Mount in such a way as to minimize vibration WARNING If devices employing gaseou...

Page 10: ...ltages that may be present when dealing with power supplies 2 3 1 Connector The HVG 2020B 9 pin D connector pin assignments are listed here NOTICE The cable length must be less than 30 meters long unless housed in a metal conduit to meet CE Mark requirements 2 3 2 Power Input The HVG 2020B has its own internal switching power supply and requires between 12 and 36 VDC input voltage The VDC supply i...

Page 11: ... 1 V Linear 0 001 V Torr 0 0000 V 1 0000 V 𝑃 1000 𝑉 𝑉 0 001 𝑃 02 0 5 V Linear 0 005 V Torr 0 0000 V 5 0000 V 𝑃 200 𝑉 𝑉 0 005 𝑃 03 0 10 V Linear 0 010 V Torr 0 0000 V 10 0000 V 𝑃 100 𝑉 𝑉 0 01 𝑃 04 4 20mA Linear 0 016 mA Torr 4 000 mA 20 000 mA 𝑃 62 5 𝐼 250 𝐼 𝑃 250 62 5 05 0 20mA Linear 0 020 mA Torr 0 000 mA 20 000 mA 𝑃 50 𝐼 𝐼 0 02 𝑃 06 0 10V Log 1 00 V dec 1 0000 V 8 0000 V 𝑃 10 𝑉 log 𝑃 5 07 0 10V...

Page 12: ...logy Subject to Restrictions Contained on the Cover Page Page 12 of 40 There are two other analog output options that are available One is a non linear curve based on convection gauges The other is a dual slope output These are described below ...

Page 13: ... 0 375 1 485409798 b 15 31570974 0 307029664 c 14 4180837 1 566833148 d 24 2920447 0 000228563 e 59 56106682 0 001397165 f 5 507480905 1 36167E 06 g 27 91187899 7 85644E 06 h 2 23911E 11 Voltage to Pressure Conversion v 0 375 V v 5 659 V p 0 0001 Torr p 1000 Torr 0 375 to 2 842 V p a bv cv 2 dv 3 ev 4 fv 5 Torr 2 842 to 4 945 V p a cv ev 2 1 bv dv 2 fv 3 Torr 4 945 to 5 659 V p a cv 1 bv dv 2 Torr...

Page 14: ...HVG 2020B Instruction Manual EAR99 Technology Subject to Restrictions Contained on the Cover Page Page 14 of 40 ...

Page 15: ...HVG 2020B Instruction Manual EAR99 Technology Subject to Restrictions Contained on the Cover Page Page 15 of 40 Option 13 Dual Slope Analog Output ...

Page 16: ...in accurate readings Optional to the standard voltage output is the 0 20 mA or 4 20 mA current output that is proportional to pressure The current loop output is useful for remote applications where pickup noise could substantially affect the stability of the voltage output The current loop signal replaces the voltage output on pin 5 of the D connector and is returned on pin 8 NOTICE The loop load...

Page 17: ...teresis built into the settings Once a setpoint is activated the pressure must go 10 beyond that value in the opposite direction to deactivate when below 10 Torr Above 10 Torr the pressure must go 1 Torr beyond the setpoint value The set point values can be changed via the display Setpoint View Section 3 2 or serial communications see S20 and S21 commands The setpoints will also show on the Bar Gr...

Page 18: ...les Do not have more than one instrument with these resistors enabled on any one cable run as this will load down the cable Hastings ships RS485 instruments without the resistors enabled The default port set up is 19 2K baud 8 data bits 1 stop bit no parity and no flow control A carriage return signals the end of command input The end of a response message from the HVG 2020B is signaled by a chara...

Page 19: ...00 Torr Steady Green Flash Yellow at 1 sec rate Pressure 800 Torr Steady Green Steady Yellow Pressure near 760 Torr Steady Green Steady Green Pressure 700 Torr Steady Green Flash Green at 1 sec rate Duty cycle proportional to pressure Pressure 1 Torr Steady Green Short flash green at 1 sec rate Pressure 0 01 Torr Steady Green Short flash green at 2 sec rate Main Board Comm Error Flash Red at 2 sec...

Page 20: ... VDC 4 Transducer tube may be installed in any orientation However if condensation is likely to occur then the tube port should be orientated downward 5 When installing 1 8 NPT style transducer tube use the wrench flats 6 Attach cable 7 With the vacuum chamber at atmosphere turn on the power supply Gauge is now reading pressure 8 For best accuracy the gauge should now be zeroed To do this pump the...

Page 21: ...to activate the touch such as a stylus pencil eraser fingernail gloved finger etc However it can only detect one touch location at a time The touch panel top layer is made of polyester or polyethylene terephthalate PET NOTICE Do not apply excessive pressure liquids or sharp objects to the touch screen to avoid damage To clean the display breathe on the surface and gently wipe it with a soft cotton...

Page 22: ...dicated with an upward arrow and Lo with a downward arrow Green means the setpoint is active and red means inactive If the set point values are made to be off scale the arrows will not be displayed 5 History Graph View A graphical indication of the pressure over time Touching the screen anywhere will bring up a screen allowing the user to adjust the time in seconds per sample displayed point Use t...

Page 23: ...ns The user may then select voltage or current output range 0 1 V 0 5 V 0 10 V 0 20 mA or 4 20 mA 3 3 5 Gas Select The user may select from the available gas options Refer to section 4 5 for specific values of the gas selections The user may select a pre defined gas or a custom gas The custom selections must be set using serial communications The gases are as follows Nitrogen Air Helium Argon Hydr...

Page 24: ...sensor based on the Pirani reading This may happen every 20 minutes given a certain set of circumstances the Pirani pressure reads below 0 1 Torr the piezo pressure reads less than 20 Torr and the piezo pressure reads more than 0 5 Torr differently than its previous zero value Positive Pressure Operation WARNING The HVG 2020B does not have a high pressure option and is only rated for a maximum ope...

Page 25: ...on 1 512 0 881 Hydrogen 0 656 0 545 CF4 1 015 2 853 SF6 0 913 0 4327 Custom 1 1 1 Custom 2 1 1 Calibration Procedure NOTICE The HVG 2020B is calibrated in nitrogen at the factory and any attempt to adjust the values associated with it will void the calibration Nitrogen Calibration The HVG 2020B calibration requires digital communication See Section 5 1 Attach the HVG 2020B to a vacuum system and p...

Page 26: ... the ratio of custom gas mass to nitrogen mass and subtract 0 6 𝐾 0 6 R10 4 Attach the unit to a vacuum system and pump down below 0 0001 Torr 5 Zero the instrument by sending the ZRO command 6 Backfill with the custom gas until the pressure is between 0 1 and 1 Torr as indicated by the pressure reference 7 Set the gas factor to the ratio between the indicated Pirani pressure and reference pressur...

Page 27: ...command set The TTL serial port will not recognize commands that deal with RS485 See section 2 3 7 for TTL connection information 5 2 2 Serial Communication Software Serial Communication Software running on a host computer is required to access the serial port All such programs need to be configured to communicate with the instrument the required parameters are Baud Rate Bits per second the number...

Page 28: ...e address is a two digit hexadecimal value which can be in the range 0x01 to 0x98 and 0x9A to 0xFF the factory default is x01 The address is required at the beginning of every command and is entered in the format NN where NN is the two digit hex address stored in S5 of the target device As an example if you want to read the Sensor List from the device with address 0x02 send the command 02 SL The H...

Page 29: ...nses in RS232 mode There will be no address in responses 5 2 8 Commands 5 2 8 1 Reporting Commands P Pressure Returns the current pressure in the units specified in S22 P1 Start Pressure Streaming Causes pressure readings to be output every 1 2 second P0 Stop Pressure Streaming Stops the 1 2 second pressure reading output R Pirani Pressure Returns the current Pirani sensor pressure in the units sp...

Page 30: ... 8 PA S112 Verbose Replies Write Only Enables Non Zero value or disables 0 Verbose Replies ENABLE VERBOSE Display descriptive text and units Same as S112 1 DISABLE VERBOSE Display values only Same as S112 0 ENABLE RS485 Configure the serial port for RS485 communication DISABLE RS485 Configure the serial port for RS232 communication IS485TERMINATED Read whether termination resistors are engaged NOT...

Page 31: ...nd 12 0 Torr Can only be performed when R8 is set to 7 or 8 custom gas SPAN Factory Write Span the Piezo Sensor Calibrates the Piezo sensor span based on the current pressure value given Pressure value is stored in S28 also TEMPSET Factory Read Write Calibrate the Piezo Sensor Temperature Calibrates the Piezo sensor temperature based on the current temperature value given TDAO DAC zero output Unlo...

Page 32: ...OL_BOARD_COMM_ERROR 0x0800 PIEZO_COMM_ERROR 0x1000 PIEZO_STATUS_ERROR 0x2000 PIEZO_OVER_LIMIT ML Status Alias This is an alias for the STATUS command for backward compatibility HISTORY System Error Status History Returns any Status errors that have occurred since system reset CLEAR HISTORY Clears the Status History FAIL CODES System Fail codes Returns all System Status Failure codes which have occ...

Page 33: ...wn S14 Number of Decimal Places Read Write The number of decimal places displayed for floating point values Valid values are 0 to 7 This setting is reflected in the lower 3 bits of S2 S15 Piezo Zero Value Read Write The piezo sensor zero value in counts Changing this value can be used to adjust the zero pressure indication even when at higher pressures S16 Piezo Slope Value Read Only The piezo sen...

Page 34: ...1 286V Dec 0x04 Span 20mA 1000Torr Slope 2mA Dec 0x05 Span 20mA 1000Torr Slope 2 5mA Dec 0x06 Span CUSTOM Slope CUSTOM S32 Analog Log Span Read Write This sets the logarithmic span for the custom analog output selection 6 only S33 Analog Log Slope Read Write This sets the logarithmic slope for the custom analog output selection 6 only S36 Analog Output Zero Pressure Read Only The Analog Output vol...

Page 35: ...d Write This allows the end user to add up to 63 characters of free format text for their own use NOTE do not use the greater than sign in any text field because it could affect automated command response processing since it is used as the end of response character S62 Cal Date Read Factory Write The date the device was calibrated at the factory This is a text field which accepts a maximum of 63 c...

Page 36: ...ad Write The quadratic term of the equation used to fit the calibration data to improve accuracy C3 Piezo Linearization Coefficient 3 Factory Read Write The third order term of the equation used to fit the calibration data to improve accuracy PSF Piezo Span Factor Factory Read Write The factor used to scale the normalized curve fit Used with PFS C1 C2 and C3 Pressure PFS PSF If no curve fit was re...

Page 37: ...value in counts R23 Pirani Temperature Set Point Read Factory Write Pirani temperature set point for PID control R24 Pirani Proportional Control Read Factory Write Pirani drive proportional coefficient R25 Pirani Derivative Control Read Factory Write Pirani drive differential coefficient R26 Pirani Integral Control Read Factory Write Pirani drive integral coefficient R27 Pirani Drive Read Factory ...

Page 38: ...determine what the problem may be Also issues that may have occurred are recorded in memory and may be accessed using the commands STATUS HISTORY and FAIL CODES See Commands section above 6 2 2 Possible Problems and Solutions Symptom Not able to communicate digitally Action Check settings as found in Serial Communications section above Make certain baud rate and 232 485 operation are correct If us...

Page 39: ... must have been issued a Return Material Authorization RMA form RMA Forms may be obtained from the Information section of the Hastings Instruments website http www teledyne hi com inforeq htm WARNING Contaminated parts can be detrimental to health and environment Ensure instruments are free of hazardous contamination prior to shipment Company contact information TELEDYNE HASTINGS INSTRUMENTS 804 N...

Page 40: ...HVG 2020B Instruction Manual EAR99 Technology Subject to Restrictions Contained on the Cover Page Page 40 of 40 8 Drawings ...

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