AMI 1700 Installation, Operation And Maintenance Instructions
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AMI 1700 Installation, Operation And Maintenance Instructions

Liquid level instrument
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EXCELLENCE IN MAGNETICS AND CRYOGENICS
1 Cover Page
MODEL 1700
LIQUID LEVEL INSTRUMENT
(LIQUID HELIUM VERSION)
INSTALLATION, OPERATION, AND
MAINTENANCE INSTRUCTIONS
American Magnetics, Inc.
P.O. Box 2509, 112 Flint Road, Oak Ridge, TN 37831-2509, Tel: 865-482-1056, Fax: 865-482-5472
Revision 4 - July 2022

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  • Page 1 EXCELLENCE IN MAGNETICS AND CRYOGENICS 1 Cover Page MODEL 1700 LIQUID LEVEL INSTRUMENT (LIQUID HELIUM VERSION) INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS American Magnetics, Inc. P.O. Box 2509, 112 Flint Road, Oak Ridge, TN 37831-2509, Tel: 865-482-1056, Fax: 865-482-5472 Revision 4 - July 2022...
  • Page 3 Model 1700 Specifications @ 25°C........

  • Page 4: Table Of Contents

    Mounting the Model 1700 Instrument ........
  • Page 5 MERICAN AGNETICS ABLE OF ONTENTS Configure the Autofill Function ..........33 Setting the autofill parameters .
  • Page 6 MERICAN AGNETICS ABLE OF ONTENTS Port Assignment ..............54 Command Reference .
  • Page 7 MERICAN AGNETICS ABLE OF ONTENTS Ethernet Connector ............80 Liquid Helium Connector J1 Wiring .
  • Page 8 MERICAN AGNETICS ABLE OF ONTENTS...
  • Page 9 ONTENTS OF THIS ANUAL Introduction describes the functions, specifications, and characteristics of the Model 1700 Instrument. It provides illustrations of the front and rear panel layouts as well as documenting the performance specifications. Additional information is provided in the form of system block diagrams.
  • Page 10 ENERAL RECAUTIONS Remote Interface Reference documents all remote commands and queries available through the Model 1700 Instrument RS-232 and Ethernet interfaces. A quick-reference summary of commands is provided as well as a detailed description of each. The Appendix and Glossary sections support the information in the sections listed above.
  • Page 11 MERICAN AGNETICS OREWORD ENERAL RECAUTIONS systems; the temperature extremes they are typically subjected to cause seals to fail frequently. In the event a person is burned by a cryogen or material cooled to cryogenic temperatures, the following first aid treatment should be given pending the arrival and treatment of a physician or other medical care worker: 1.
  • Page 12 MERICAN AGNETICS OREWORD RYOGEN AFETY UMMARY austinetic Ni-Cr alloys exhibit good ductility at these low temperatures ® and the most widely used is 18-8 stainless steel. Copper, Monel , brass and aluminum are also considered satisfactory materials for cryogenic service. RYOGEN AFETY UMMARY...
  • Page 13 Model 1700 Instrument may be impaired. NSTRUMENT ONFIGURATION The Model 1700 Instrument is configured at time of purchase as one in several ways: • • As a helium level instrument for level sensors with active length up to 80 inches (203 cm) for either 4.2K or 2K LHe.
  • Page 14 The instrument part number, shown on the serialization label located on the underside of the instrument, as well as in a field in the instrument Menu, identifies the configuration according to the following key: 1700-A-B-C-D-E where A indicates the mounting method: Tbl = tabletop SR19L = single rack mounted, 19”...
  • Page 15 MERICAN AGNETICS OREWORD NSTRUMENT ONFIGURATION He2K = 2K helium for sensors He4K = 4.2K helium for sensors N = not configured The sensor active length and length units are appended to the configuration code, ie ...He2K-40IN-... E is used to denote any instrument customization: S = standard (no customization) C = instrument modified.
  • Page 16 MERICAN AGNETICS OREWORD NSTRUMENT ONFIGURATION...
  • Page 17 At time of purchase, the Model 1700 will be configured as: • A liquid helium level instrument/controller.
  • Page 18 The menus are presented in a logical fashion so that the operation of the Model 1700 is intuitive to the user. Context-sensitive Help screens are also provided.
  • Page 19 NTRODUCTION ODEL NSTRUMENT The Model 1700 Instrument allows for remote operation with an external browser via TCP/IP connection. All commands that are available by touching the local screen are available via the web browser Model 1700 Helium Instrument Via Web Browser...
  • Page 20 1700 F MERICAN AGNETICS NTRODUCTION ODEL RONT ANEL AYOUT 1700 F ODEL RONT ANEL AYOUT Model 1700 Front View; Dual Channel Instrument Shown...
  • Page 21 ANEL AYOUT 1700 R ODEL ANEL AYOUT  Model 1700 Rear Panel Description Computer Network Connector Aux I/O Connector RS-232 Serial Connector Switched Valve Outlet Socket (IEC 60320 C13) Capacitive Sensor Input Connector Mains Power Entry Connector (IEC 60320 C14)
  • Page 22 1700 S @ 25°C MERICAN AGNETICS NTRODUCTION ODEL PECIFICATIONS 1700 S @ 25°C ODEL PECIFICATIONS System Architecture Display: 4.3” 24-bit color TFT display, 480x272 pixel with resistive touch screen Sensor Types: Superconductivity-based liquid level Maximum Length Readout: Superconductivity-based liquid level (LHe) up to 80 in...
  • Page 23 1700 S @ 25°C MERICAN AGNETICS NTRODUCTION ODEL PECIFICATIONS Analog Outputs Output Types: 0-10 V and simultaneous 4 - 20 mA 4-20 mA Current Loop Power Supply Voltage: 12-32 V 0-10 V Recorder Output Load: 50k ohms or greater 0-10 V...
  • Page 24 1700 S @ 25°C MERICAN AGNETICS NTRODUCTION ODEL PECIFICATIONS Environmental Limits Ambient Temperature: Operating: 0°C to 40°C [32°F to 104°F]; Non-operating: -20 °C to 60 °C [-4 °F to 140 °F] Relative Humidity: 0 to 95%; non-condensing Maximum Instrument Background Field:...

  • Page 25: Installation

    OUNTING THE ODEL NSTRUMENT If the Model 1700 Instrument is to be used as a table top model, place the equipment on a flat, secure surface. If the Model 1700 Instrument is to be rack mounted, install it in a 19"...

  • Page 26: Liquid Helium Level Sensor Installation

    This will give an indication of a higher helium level than actually exists. 6. Connect the sensor to the Model 1700 LHe Level Sensor connector on the instrument rear panel (refer to “Liquid Helium Connector J1 Wiring” on page 81).

  • Page 27: Connecting The Liquid Helium Level Sensor

    9-pin D-Sub connector which will connect to the female 9-pin D-Sub connector on the transmitter. Refer to the table on page 10 and the Appendix of this manual as well as the AMI sensor manual for the proper pin out and wire color connections. Connect the sensor to the LHe connector on the rear panel.

  • Page 28: Configuring An Autofill System

    To create an autofill system, a cryogenic liquid source must be attached to the target or level controlled dewar via a customized valving system for LHe application. The valve should be controlled by the Model 1700 Instrument. An autofill system for LHe application is a more complex issue than...

  • Page 29: Power Requirements

    NSTALLATION OWER EQUIREMENTS OWER EQUIREMENTS The Model 1700 Instrument operates on 50-60 Hz power WARNING and may be powered from 100-240 VAC. Insure that the input ground terminal is connected securely to an external earth ground. Ensure the detachable mains supply cord is of suitable rating, i.e.
  • Page 30 It is extremely important to observe all polarities and to not exceed +32VDC for the loop power supply in order to prevent damage to the 4-20mA driver circuit. AUX I/O PIN 1 LOOP POWER MODEL 1700 SUPPLY AUX I/O PIN 2 INSTRUMENT (12-32 VDC)

  • Page 31: Operation

    AGNETICS PERATION PERATION This section describes the operation of the Model 1700 Instrument. 1. Turn the power switch on the front panel of the instrument to the On (I) posi- NERGIZING THE tion. The display will briefly show a boot image and then display the home...

  • Page 32: Home Screen Footer

      edited, the footer changes to Field Editing Footer appear as follows: Model 1700 Instrument Footer during editing a field Name Function SAVE Saves the entries made on the screen. The footer ...

  • Page 33: Navigating The Instrument Menus

    MERICAN AGNETICS PERATION AVIGATING THE NSTRUMENT ENUS AVIGATING THE NSTRUMENT ENUS The menu system is invoked by pressing the MENU button in the MENU button on HOME screen lower left corner of the instrument level display screen. When invoked, the MENU screen will be displayed: MENU Selection Screen Pressing HOME in the lower left...

  • Page 34: Menu Structure

    4-20 mADC Current DAC #1 value: < value> Analog Outputs Hardware Control: MANUAL 0-10 VDC Voltage DAC #1 value: {nnnn} 4-20 mADC Current DAC #1 value: {nnnn} TOUCH SCREEN CALIBRATE TOUCH SCREEN TEST DRAG DRAW QUIT CURSOR {ON | OFF} FACTORY RESTORE RESTORE Model 1700 Menu Structure...

  • Page 35: Screen Descriptions

    AGNETICS PERATION AVIGATING THE NSTRUMENT ENUS The Model 1700 Instrument displays various screens on the graphic CREEN ESCRIPTIONS display when a MENU item is chosen. The items for each screen are described in the following table. Model 1700 Helium Level Instrument Screen Descriptions...
  • Page 36 MERICAN AGNETICS PERATION AVIGATING THE NSTRUMENT ENUS Model 1700 Helium Level Instrument Screen Descriptions Item Label Field Type or Function Screen OUTPUT CONFIGURATION: ALARMS ALARM 1 SOURCE: Toggles between: DISABLED, HELIUM ALARM 1 SETPOINT: Data entry <value> %, in, or cm (tap units to change) ALARM 1 WHEN LEVEL <state>...
  • Page 37 MERICAN AGNETICS PERATION AVIGATING THE NSTRUMENT ENUS Model 1700 Helium Level Instrument Screen Descriptions Item Label Field Type or Function Screen OUTPUT CONFIGURATION: AutoFILL CONTROL: Toggles between: AUTOFILL DISABLED, HELIUM START: Data entry <value> %, in, or cm (tap units to change) STOP: Data entry <value>...
  • Page 38 MERICAN AGNETICS PERATION AVIGATING THE NSTRUMENT ENUS Model 1700 Helium Level Instrument Screen Descriptions Item Label Field Type or Function Screen SYSTEM CONFIGURATION Instrument Serial Number: Information: <value> HW: FPGA: FW: Information: <values> Date of Manufacture: Information: <value> Helium Power Supply: Information: <value>...
  • Page 39 MERICAN AGNETICS PERATION AVIGATING THE NSTRUMENT ENUS Model 1700 Helium Level Instrument Screen Descriptions Item Label Field Type or Function Screen SYSTEM TEST TURN ON ALL LCD PIXELS Move to multi-color test screen TURN ON RED LCD PIXELS Move to red test screen...

  • Page 40: Superconducting (Liquid Helium) Level

    ELIUM EVEL UPERCONDUCTING IQUID ELIUM EVEL If the instrument was purchased with an AMI LHe level sensor, NOTE ONFIGURE THE Steps 1 through 6, below have already been performed. INSTRUMENT TO DISPLAY HELIUM LEVEL 1. From the main screen, choose the following: MENU > SENSORS.
  • Page 41 MERICAN AGNETICS PERATION UPERCONDUCTING IQUID ELIUM EVEL 5. Press the SENSOR ACTIVE LENGTH field. Calibrate Helium Screen The entered sensor active length must match the actual active NOTE length of the connected LHe sensor for accurate results. 6. In the numeric pop-up keypad, enter the sensor active length in centimeters.

  • Page 42: Sensor Burnout Protection

    If excessive sensor resistance is detected, the Model 1700 display will indicate burnout protection is in effect and the sensor current will be turned off for a minimum of six seconds after which time the instrument will attempt to resume normal operation.

  • Page 43: Sampled Or Continuous Measurements

    EVEL If an attached sensor is installed in a warm, gas-filled cryostat (not in a vacuum), the sensor burnout protection may activate as soon as the Model 1700 is energized liquid helium level measurement is attempted. This is normal until the cryostat and...
  • Page 44 IQUID ELIUM EVEL AMI expects the helium level sensor to be reasonably clean and free from oil, water, ice, etc. for proper operation. However, it is recognized that some experiments might result in some material being deposited on the sensor wire. Ice formation at some point on the sensor is a typical occurrence.

  • Page 45: Alarms And Relays

    LARMS AND ELAYS The Model 1700 Instrument has two types of alarms, level-based and time-based alarms. Prior revisions of the Model 1700 have attempted to indicate the alarm LARM TATUS conditions in the main screen footer region, including cycling through CREEN multiple alarm texts in the footer.

  • Page 46: Multiple Alarms

    MERICAN AGNETICS PERATION LARMS AND ELAYS As an example of this setup flexibility, a level channel can be configured to have an alarm condition when the level is outside a normal operating band. The relay actions can be set to act identically, or configured for other conditions, per the user-defined application.

  • Page 47: Acknowledging An Alarm

    MERICAN AGNETICS PERATION LARMS AND ELAYS 4. Use the ≤ or ≥ button to toggle between the two states of alarm, either alarm when the indicated level is less than or equal to the setpoint or alarm when the indi- cated level is greater than or equal to the alarm setpoint.
  • Page 48 MERICAN AGNETICS PERATION LARMS AND ELAYS 1. From the MENU screen, select OUTPUTS and then choose RELAYS. OUTPUT CONFIGURATION: RELAYS Screen 2. Toggle the Relay Source fields to choose HELIUM (or DIS- ABLED). RELAYS Source Configuration 3. Set the levels at which the relay will be closed in the Setpoint fields.

  • Page 49: Configure The Autofill Function

    MERICAN AGNETICS PERATION ONFIGURE THE UTOFILL UNCTION ONFIGURE THE UTOFILL UNCTION There are several variables that must be addressed to set up an autofill system. These include the level indication that will be used to control autofill, the Fill Start level (A), and the Fill Stop Level (B). 1.

  • Page 50: Enable The Autofill Function

    MERICAN AGNETICS PERATION ONFIGURE THE UTOFILL UNCTION The autofill function must first be enabled. After the autofill control loop NABLE THE UTOFILL has been configured (the parameters in the prior section) the instrument FUNCTION will enter the state. AUTO-OFF To enable the autonomous autofill function: 1.

  • Page 51: Select The Appropriate Units On The Display

    MERICAN AGNETICS PERATION ELECT THE APPROPRIATE UNITS ON THE DISPLAY ELECT THE APPROPRIATE UNITS ON THE DISPLAY Touch the units on the display to change the units. The available units are percent (%), inches (in), and centimeters (cm). Tapping the units symbol NOTE (%, in, or cm) in a configuration screen also...

  • Page 52: Ethernet Connectivity

    MERICAN AGNETICS PERATION THERNET ONNECTIVITY THERNET ONNECTIVITY IP A 1. From the MENU screen, choose DDRESSING NETWORK. The current settings CHEME will be displayed. Network Configuration Screen 2. Touch the addressing scheme button, to choose STATIC, DYNAMIC, or DISABLED as appropriate.

  • Page 53: Serial Connectivity

    MERICAN AGNETICS PERATION ERIAL ONNECTIVITY ERIAL ONNECTIVITY The serial (RS-232) connectivity can be customized per the following instructions. 1. From the home screen, choose ONFIGURING THE MENU. RS-232 S ETTINGS Menu Selection From Home Screen 2. From the MENU screen, choose SYSTEM.

  • Page 54: Abnormal Operation

    MERICAN AGNETICS PERATION BNORMAL PERATION 4. The RS-232 Configuration screen shows the current func- tion for the serial connection. RS-232 SERIAL PORT CONFIGURATION Screen 5. Choose the alternate function for the serial connection if desired. RS-232 SERIAL PORT CONFIGURATION Screen 6.

  • Page 55: Resetting The Instrument To Factory Defaults

    Resetting Instrument to Factory Defaults HUTTING THE NSTRUMENT The Model 1700 Instrument is a Linux-based computer system NOTE and in order to ensure the file system is properly unmounted, the SHUTDOWN function should be invoked. If it is not, i.e. the...
  • Page 56 MERICAN AGNETICS PERATION HUTTING THE NSTRUMENT 2. Choose SHUTDOWN again to confirm. 3. When prompted, turn off the front panel power switch. Confirming Instrument Shutdown...

  • Page 57: Calibration

    AGNETICS ALIBRATION ALIBRATION Model 1700 instrument is calibrated at the factory for a specific length sensor(s) for use in a specific liquid(s). The calibration length(s) and calibration liquid(s) are listed on the calibration sticker on the bottom of the instrument.
  • Page 58 MERICAN AGNETICS ALIBRATION ETTING THE YSTEM ATE AND 3. From the SYSTEM CONFIGU- RATION screen, choose SET TIME. SYSTEM CONFIGURATION Screen 4. In the SYSTEM DATE/TIME screen, choose to either set the date and time manually, or set it automatically from an NTP server if the instrument has Inter- net access.

  • Page 59: Superconductivity-Based (Liquid Helium) Level Calibration

    EVEL ALIBRATION The instrument has been internally calibrated for use with AMI liquid helium level sensors at the AMI facility. However, it is still necessary to verify, and if necessary enter, the correct active length for the connected sensor. If the instrument was purchased with a helium level sensor, the NOTE active length will be set at AMI prior to shipping.

  • Page 60: Sensor Sample Interval

    MERICAN AGNETICS ALIBRATION UPERCONDUCTIVITY ASED IQUID ELIUM EVEL ALIBRATION 1. Press the MENU button in the ENSOR AMPLE lower left corner of the display NTERVAL screen. Home Screen for Helium Level Display 2. Choose the SENSORS button from the MENU screen. SENSORS Selection 3.

  • Page 61: Sensor Active Length

    MERICAN AGNETICS ALIBRATION UPERCONDUCTIVITY ASED IQUID ELIUM EVEL ALIBRATION 1. Press in the SENSOR ACTIVE ENSOR CTIVE LENGTH field. A pop up ENGTH numeric keypad will be launched. 2. Enter the SENSOR ACTIVE LENGTH in the selected units and press ENTER and then SAVE.

  • Page 62: Sensor Name

    MERICAN AGNETICS ALIBRATION UPERCONDUCTIVITY ASED IQUID ELIUM EVEL ALIBRATION 1. Press the MENU > SENSORS ENSOR > SENSOR NAME(S) buttons. SENSOR NAME(S) Selection 2. Touch in the HELIUM SENSOR NAME: field. The keyboard will be displayed. Edit the displayed name and press ENTER and then SAVE at the bottom of the screen.

  • Page 63: Remote Interface Reference

    Ethernet return data. The serial and Ethernet interfaces accept both legacy and SCPI syntax for commands and queries. The Model 1700 provides a web browser connection (port 80) via TCP/ IP and presents a mirror of the local display which has hot spots that can be clicked or tapped, and which also accepts keyboard entry for textual and numerical input.
  • Page 64 : SCPI C MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND UMMARY • Triangle brackets < > indicate that you must supply a value. • Parentheses ( ) within < > indicate alternative units are available. • Capitalized portions of the commands indicate acceptable abbreviations. For example, the command CONFigure:RELAY1:CHannel {0|1|2} indicates that the command CONFigure:RELAY1:CHannel has three parameter options: 0, 1, or 2, with 0 (disabled) being the default value.
  • Page 65 : SCPI C MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND UMMARY SYStem:TIME <hh>,<mm>,<ss> SYStem:TIME? SYStem:REBOOT IPV4addr? MACADDR? GATEWAY? HOSTname? SCREENCAP SYStem:LOcal SYStem:REMote Display Configuration Commands and Queries (see page 58 for more information) DISPlay:HE? CONFigure:NAME:SENSor:HE "<string>" NAME:SENSor:HE? Relay Configuration Commands and Queries (see page 58 for more information) CONFigure:RELay1:CHannel {0|1|2} RELay1:CHannel?
  • Page 66 : SCPI C MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND UMMARY {RELay1|RELay2}:STATus? Alarm Configuration Commands and Queries (see page 60 for more information) CONFigure:ALArm1:CHannel {0|1|2} ALArm1:CHannel? CONFigure:ALArm1:SETpoint <level> ALArm1:SETpoint? CONFigure:ALArm1:OPeration {0|1} ALArm1:OPeration? CONFigure:ALArm2:CHannel {0|1|2} ALArm2:CHannel? CONFigure:ALArm2:SETpoint <level> ALArm2:SETpoint? CONFigure:ALArm2:OPeration {0|1} ALArm2:OPeration? {ALArm1|ALArm2}:STATus? ALARm:MUTE {0|1} or {NO|YES} ALARm:MUTE?
  • Page 67 : SCPI C MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND UMMARY Fill Control and Queries (see page 62 for more information) CONFigure:FILL:CHannel {0|1|2} FILL:CHannel? CONFigure:FILL:A <level> FILL:A? CONFigure:FILL:B <level> FILL:B? CONFigure:INTerval:FILL <minutes> INTerval:FILL? HE Channel Sampling Commands and Queries (see page 65 for more information) CONFigure:INTerval:SAMPle <minutes>...

  • Page 68: Configuration

    The Model 1700 is classified as a DCE (Data Communication Equipment) device since it transmits data on pin 3 and receives data on pin 2. The instrument to which the Model 1700 is attached must do the opposite, i.e., transmit on pin 2 and...

  • Page 69: Command/Return Termination Characters

    Equipment device). All commands are transmitted and received as ASCII values and are OMMAND RETURN case insensitive. The Model 1700 can be configured to return <CR> (i.e. TERMINATION a carriage return) or <CR><LF> (i.e. a carriage return followed by a CHARACTERS linefeed) at the end of a serial transmission (see page 37).

  • Page 70: Port Assignment

    MERICAN AGNETICS EMOTE NTERFACE EFERENCE THERNET ONFIGURATION The Model 1700 accepts remote connections to port 7180. Multiple SSIGNMENT connections to port 7180 are allowed.

  • Page 71: Command Reference

    All commands sent to the Model 1700 are processed and the Model 1700 responds with a return value (if applicable) and termination. If the command is invalid, the Model 1700 will respond with an error code (see the Error Codes section). All return values including error codes are terminated with <CR><LF>...
  • Page 72 2K liquid helium level for sensors of active length ≤ 80 inches. SERial_NUMber? • Returns the serial number of the instrument as a string, for example: 1700-16-002. DATE_MANUfacture? • Returns the date of manufacture as a string in the form yyyy-mm-dd, for example: 2016-11-30.
  • Page 73 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE interfaces. The state of the lock defaults to “0” (OFF) when the instrument is restarted. SYStem:KLOCK? • Returns the state of the instrument local controls lock. A return value of “0” indicates the lock is OFF. A return value of “1” indicates the local interfaces, such as the touch display, of the instrument are locked.

  • Page 74: Display Configuration Commands And Queries

    MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • GATEWAY? Returns the Gateway address of the network interface. HOSTname? • Returns the hostname of the network interface. SCREENCAP • Snaps a TGA-formatted (TARGA) image of the current local display screen of the instrument and places it in the “Log files” folder of the instrument’s network share.
  • Page 75 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • RELay1:CHannel? Returns a “0” if relay №1 is disabled, a “1” if the relay is assigned to the nitrogen channel, and a “2” if the relay is assigned to the helium channel. An error return code is generated if attempting to assign the relay to a non-existent measurement...

  • Page 76: Alarm Configuration Commands And Queries

    MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • CONFigure:RELay2:OPeration {0|1} Configures relay №2 such that it closes when the level is ≤ the setpoint (0) or ≥ the setpoint (1) RELay2:OPeration? • Returns a “0” if relay №2 closes when the level is ≤ the setpoint and a “1” if the relay closes when the level is ≥...
  • Page 77 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • CONFigure:ALArm2:CHannel {0|1|2} Assigns alarm №2 to disabled (0), or to nitrogen (1) or helium (2). An error return code is generated if attempting to assign the alarm to a non- existent measurement channel in the present instrument configuration. ALArm2:CHannel? •...

  • Page 78: Measurement Commands And Queries

    MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE MEASure:HE:LEVel? • EASUREMENT OMMANDS AND Returns the liquid helium level in the current units. UERIES MEASure:HE:HOLD • Changes liquid helium level measurement operation from Continuous to Sample and Hold. • MEASure:HE:CONTinuous Changes liquid helium level measurement operation from Sample and Hold to Continuous mode.

  • Page 79: He Channel Sampling Commands And Queries

    MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • CONFigure:FILL:A <level> Sets the A setpoint (control band upper limit) in the assigned channel’s current units. The A setpoint (autofill stop) must be greater than the B setpoint (fill start) and must also be between 0% and 100%. FILL:A? •...

  • Page 80: Assignment Commands And Queries

    MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • HE:TIME_limit? Returns the continuous measurement time limit in minutes. LOG_LHE {0|1} • Enables (1) or disables (0) liquid helium level logging. LOG_LHE? • Returns “0” if the liquid helium level logging is disabled, or “1” if enabled. •...

  • Page 81: He Channel Calibration Commands And Queries

    MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE HE C CONFigure:HE:LENgth <value> • HANNEL ALIBRATION Configures the liquid helium sensor active length in current units. OMMANDS AND Returns an error if the current units are percent. UERIES HE:LENgth? • Returns the configured active length of the liquid helium sensor in current units.

  • Page 82: Error Codes

    ODES RROR ODES The Model 1700 returns specific error codes for invalid commands and/ or arguments. If an error condition is returned, the command is not processed and the configuration of the instrument is not modified. The table below provides a list of error codes, their meaning, and any associated limits.

  • Page 83: Legacy Command Reference

    SCPI specification. The modern and legacy command sets can be mixed as desired. All legacy command or queries sent to the Model 1700 are processed and the Model 1700 responds with a return value (if applicable) and termination.

  • Page 84: Commands For Configuring Permanent Memory

    35.0 units of centimeters or inches. The LENGTH=<value> command will only function if CM or INCH NOTE are currently selected as the units of measurement. The LENGTH command does not configure the Model 1700 if the units of measurement are PERCENT.

  • Page 85: Querying The Configuration

    MERICAN AGNETICS EMOTE NTERFACE EFERENCE EGACY OMMAND EFERENCE The INTERVAL command sets the sampling interval used when the instrument is set for sampling mode operation (as opposed to continuous update). INTERVAL=0.1 sets the sampling interval to 0.1 minutes. The HI, LO, A, B, INTERVAL, LENGTH, and current remote units settings are automatically saved to permanent memory.
  • Page 86 MERICAN AGNETICS EMOTE NTERFACE EFERENCE EGACY OMMAND EFERENCE...

  • Page 87: Service And Repair

    Do not use detergent or solvents. Do not attempt internal cleaning. EPLACEABLE ARTS Replacement parts for the instrument are listed in the table below. AMI Part Number Description HG0128 Instrument foot SA 1045 Single Rack Mount Kit SA 1046...

  • Page 88: Battery Replacement

    MERICAN AGNETICS ERVICE AND EPAIR ATTERY EPLACEMENT ATTERY EPLACEMENT This section describes the procedure for replacing the battery on the instrument's main circuit board. WARNING This procedure should only be performed by a technician who is familiar with electronic instrumentation and trained in electrical safety and ESD precautions.

  • Page 89: Tools Required

    MERICAN AGNETICS ERVICE AND EPAIR ATTERY EPLACEMENT 3. From the SYSTEM CONFIGURATION screen choose SET TIME. SYSTEM CONFIGURATION Screen 4. The battery status is displayed in the SYSTEM DATE & TIME screen. If the battery is weak and should be replaced soon, the message will appear as shown at right.

  • Page 90: Fuse Replacement

    MERICAN AGNETICS ERVICE AND EPAIR EPLACEMENT 5. Using the small, flat-blade screwdriver, carefully pry the battery from the holder BH1. 6. Install the new battery into the battery holder BH1. 7. Replace the top cover and secure using the eight machine screws which were removed previously.

  • Page 91: Firmware Upgrade Via Ethernet

    PGRADE THERNET The following procedure can be utilized by users to upgrade the Model 1700 by downloading firmware upgrade archives (.tar.gz) from the AMI support website. 1. Connect the instrument to a computer network via Ethernet cable and ener- gize the instrument.

  • Page 92: Upgrade Via Scp

    MERICAN AGNETICS ERVICE AND EPAIR IRMWARE PGRADE THERNET 6. Open a second Windows Explorer and locate the previously downloaded firmware file: 7. Drag the firmware file to the instrument's Application Update folder in the first Explorer screen. 8. Install the new firmware by pressing MENU > SYSTEM > UPDATE on the instrument and choose the name of the firmware file copied to the instrument.
  • Page 93 ./Ver-2.220719.15.tar.gz root@192.168.1.101:/update Note that you will prompted to enter the root account password to complete the file transfer. If you do not know the password, contact an Authorized AMI Technical Support Representative for assistance. 7. Install the new firmware by pressing MENU > SYSTEM > UPDATE on the instrument and choose the name of the firmware file copied to the instrument via SCP.
  • Page 94 MERICAN AGNETICS ERVICE AND EPAIR IRMWARE PGRADE THERNET...

  • Page 95: Appendix

    MERICAN AGNETICS PPENDIX PPENDIX (RS-232) C ERIAL ONNECTOR Serial (RS-232) Pin Out The RS-232 connector is a 9-pin D-sub female connector to connect standard DTE 9-pin D-sub male connector using a standard straight (not NULL) cable. Serial (RS-232) Pin Definitions Mnemonic Function Transmit Data...

  • Page 96: Ethernet Connector

    MERICAN AGNETICS PPENDIX THERNET ONNECTOR THERNET ONNECTOR Pin 1 Ethernet Connector Socket Pin out Ethernet RJ-45 Connector Pin Definitions Mnemonic Function TXD+ Transmit differential output + TXD- Transmit differential output - RXD+ Transmit differential input + not used Transmit differential input - not used...

  • Page 97: Liquid Helium Connector J1 Wiring

    Liquid Helium (LHe) Level Sensor Connector The LHe connector is a 9-pin D-sub female connector. LHe Level Connector Pin Definitions Function AMI Standard Wiring Color Sensor I+ +48 VDC P/S Test Point +5 VDC P/S Test Point -12 VDC P/S Test Point...

  • Page 98: Aux I/O Connector

     Relay № 1 Dry Contact Relay № 2 Dry Contact If the Model 1700 is being used to replace a Model 13x NOTE instrument, a M-M 9-pin gender changer will be necessary to change the female AUX I/O connector on the Model 1700 to a...

  • Page 99: Troubleshooting

    AMI Technical Support. If the cause of the problem cannot be located, contact an AMI Technical Support Representative at +1 (865) 482-1056 for assistance. The AMI technical support group may also be reached by internet e-mail at: support@americanmagnetics.com...
  • Page 100 MERICAN AGNETICS PPENDIX ROUBLESHOOTING interface over serial or Ethernet connections. To access the test functions: 1. From the home screen, choose MENU. Menu Selection From Home Screen 2. From the MENU screen, choose SYSTEM. MENU Selection Screen 3. From the SYSTEM CONFIGURATION screen choose SYSTEM TEST.
  • Page 101 MERICAN AGNETICS PPENDIX ROUBLESHOOTING 5. To calibrate or test the touch function of the screen, use the TOUCH SCREEN CALIBRATE or TOUCH SCREEN TEST selections in the SYSTEM TEST screen. The calibrate function will display a screen with touch targets. Touch all the targets as they are SYSTEM TEST Touch Cal/Test displayed to complete the...

  • Page 102: System Logs

    11. Use the HOME button to return CURSOR Display Selection to the main level display. The Model 1700 provides a logging feature that saves detailed YSTEM information regarding the liquid level and system events. The information can be very useful in troubleshooting suspected system errors.
  • Page 103 MERICAN AGNETICS PPENDIX ROUBLESHOOTING folder is labeled “Log files” and can found on a network by opening a file explorer at the instrument IP address or hostname. In the Log files folder, there will be a variety of logging files: He.log: Contains a log of liquid helium measurement events, with each entry timestamped and a record of the hardware bits at that time.
  • Page 104 MERICAN AGNETICS PPENDIX ROUBLESHOOTING A Unix timestamp is the time in seconds since Jan 1, 1970 in Coordinated Universal Time. ESCRIPTION OF THE ORMAT Here is an example of a measurement, with the helium level changing from 26.3 to 45.1: timestamp, %level, status bits 1626706702, 26.3,028...
  • Page 105 MERICAN AGNETICS PPENDIX ROUBLESHOOTING 1626708999, 16.1,000020 Entry #1: timestamped at Mon Jul 19 2021 11:36:28 (Eastern Daylight Time) with a read level of 88.2%. The status bits (000020) indicated that the external/internal N2 sensor oscillator selection was internal. Entries #2-#6: shows the level changing over a 5 second span, settling at 16.1% Entry #7: timestamped at Mon Jul 19 2021 11:36:36 showed a loss of sensor event.
  • Page 106 AGNETICS PPENDIX ROUBLESHOOTING Modification of a instrument variable More detailed information on each class is available from your Authorized AMI Technical Representative. Here is a simple example of operations logging file entries for a shutdown initiation: timestamp, class,data1,data2,data3 #1 1626712173,LL,MENU,menu.aml, #2 1626712191,LL,SHUTDOWN,../shutdown.aml,...
  • Page 107 MERICAN AGNETICS PPENDIX ROUBLESHOOTING TATUS ABLE Status Bit Representation (in hexadecimal) STATUS_Alarm 0x00001 STATUS_relay1 0x00002 STATUS_relay2 0x00004 STATUS_Ext_1_osc 0x00020 STATUS_Valve_1_open 0x00040 STATUS_N2_1_LossOfSensor 0x00200 STATUS_N2_1_SensorShorted 0x00400 STATUS_PowerUp 0x00800 STATUS_He_1_Burnout_Timeout 0x04000 STATUS_He_1_LossOfSensor 0x08000...
  • Page 108 MERICAN AGNETICS PPENDIX ROUBLESHOOTING...

  • Page 109: Glossary

    CR or <CR> Text Carriage-Return character Cryogen A substance for obtaining low temperatures. In the case of use with the Model 1700 instrument, a cryogen is a liquefied gas such as liquid nitrogen or liquid helium. D-Sub Term referring to the family of connectors containing an odd number of pins in two...
  • Page 110 MERICAN AGNETICS LOSSARY BBREVIATIONS AND CRONYMS Term Meaning Electrical Connection Lubricant - also known as Dielectric Tune-up Grease, a protec- tive lubricant that prevents corrosion. Power supply output voltage i, I Electrical current flow Power supply output current International Electrotechnical Commission IEEE Institute of Electrical and Electronics Engineers Input/Output;...

  • Page 111: Index

    - see remote commands muting 29 error codes 66 remote configuration 60 Ethernet 7 states 31 Ethernet connector 7 AMI contacts protocols 7 remote, browser-based 2 analog outputs response format and termination 47 connection 13 serial 7 connector 82...
  • Page 112 MERICAN AGNETICS NDEX current loop front panel layout connection diagram 14 power switch 15 current loop specifications fuse replacement dimensions glossary of terms DHCP 93 dirty sensor mode display ALARM indicator/button 16 home screen autofill control 34 AUTOFILL button 34 AUTOFILL indicator/button 16 AUTO-OFF button 34 BACK button 17...
  • Page 113 MERICAN AGNETICS NDEX mounting 10 sampling interval 44 part number definition sensor excitation values 27 sensor name 46 power on/off sensor preparation 11 power requirements sensor sample interval 26 setting active length 25 power supply type 4.2K or 2K 1 operating parameters 6 vacuum caution 10 liquid level system terminology...
  • Page 114 53 serial port warnings baud rate 38 equipment xi echo 38 weight function 38 setup 37 termination 38 serial port connector/cables service AMI contact 83 service - see instrument shutdown specifications analog output 7 display 6 environmental limits 8...

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