Martel DPC300A Reference Manual
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Martel DPC300A Reference Manual

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DPC300A
Reference Manual

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Summary of Contents for Martel DPC300A

  • Page 1 DPC300A Reference Manual...

  • Page 2: Table Of Contents

    DPC300A Reference Manual 1. Introduction ......... . . 1 1.1 Customer Service .

  • Page 3: Introduction

    Tel: (603) 434-1433 800-821-0023 Fax: (603) 434-1653 Martel Electronics 3 Corporate Park Dr. Derry, NH 03038 1.2 Standard Equipment Check to see if your calibrator is complete. It should include: DPC- 300A, instruction manual, test leads, calibration hose kit with fittings,...

  • Page 4: Safety Information

    1.3 Safety information Symbols Used The following table lists the International Electrical Symbols. Some or all of these symbols may be used on the instrument or in this manual. Symbol Description AC (Alternating Current) AC-DC Battery CE Complies with European Union Directives Double Insulated Electric Shock Fuse...
  • Page 5 The following definitions apply to the terms “Warning” and “Caution”. • “Warning” identifies conditions and actions that may pose hazards to the user. • “Caution” identifies conditions and actions that may damage the instrument being used. Use the calibrator only as specified in this manual, otherwise injury and damage to the calibrator may occur.
  • Page 6 • When servicing the calibrator, use only specified replacement parts. • To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the battery indicator appears. Caution To avoid possible damage to calibrator or to equipment under test: •...

  • Page 7: Calibrator Interface

    -12-300 PSI AIR SUPPLY OUTPUT PUMP MEASURE DPC-300A [P1] 30.00 FILTER PRESSURE CHARGE MODULE MENU LOWER LIGHT MARTEL ELECTRONICS FINE ADJUST / VENT REGULATOR HOME PRESSURE VACUUM PUMP ZERO SELECTOR PUMP 0 to 120 psi MAIN VOLTS /mA SELECTOR WARNING:...
  • Page 8 Figures 2A and 2B show the location of the keys. Table 2 describes the function of each key. Figure 2A Keypad Table 2 Key Functions Name Description Function Keys These are soft keys used to configure the calibrator ON/OFF Key This key is used to turn the calibrator on and off ZERO Key This key is used to zero pressure measurements...

  • Page 9: Calibrator Display

    2.1 Calibrator Display The Calibrator Display consists of two regions: The menu bar (located along the bottom of the screen) is used to access a menu system. The main display (the rest) consists of up to three process measurement sub-regions. These sub-regions will henceforth be referred to as the UPPER, MIDDLE and LOWER displays.
  • Page 10 2.1.2 Main Menu Functionality There are three options on the Menu, CONFIG, {Active Display} and MORE. The Main Menu is home for the menu display. 2.1.2.1 Setting the Active Display The active display is indicated by the center option on the Main Menu, pressing the F2 key will toggle the active display.

  • Page 11: Using The Backlight

    Table 4 Mode Concurrency Active Display P[1] [EXT] P[1] [EXT] Volts Loop P[1] [EXT] P[1]ST [EXT]ST mA Loop Volts X = valid mode 2.1.1.3 Accessing Other Menus Use the MORE option on the Main Menu to access the other menu functions.

  • Page 12: Other Menu Controlled Functions

    arrow keys (F2 and F3 Keys). The sensor port should be open (vented) to atmosphere while performing this procedure. 2.4 Other Menu Controlled Functions There are many ‘sub-main’ menus that can be accessed through the MORE option of the Main Menu. A ‘sub-main’ menu contains three options.
  • Page 13 Max Menu, Contrast Adjustment menus and the Configuration Lock Menu. When the UNLOCK CFG option is chosen the configuration is unlocked and the menu display continues to the next sub-main menu. 2.4.3 Saving and Recalling Setups The calibrator will automatically save the current set-up for recall at power-up.
  • Page 14 Figure 4 Menu Map...
  • Page 15 If SAVE or RECALL is selected use the arrow keys to select the set- up location. Then use the save option to store the current set-up into the selected location or the recall option to recall the set-up stored in the selected location. The display menu will automatically go home.

  • Page 16: Initial Setup And Basic Pressure Generation

    Use the DONE option to save the changes and return home. When a display is deactivated its configuration is retained. When the display is activated its configuration is checked against the configurations of the other currently active displays, if the configurations are in conflict the recalled display’s configuration is modified to avoid the conflict.

  • Page 17: Measuring Pressure

    3. Set the pressure/vacuum selection knob to the desired function (+ for pressure and - for vacuum). 4. Close the vent knob. 5. Press the pump key and monitor the pressure rise (or vacuum generation) until you reach the desired pressure. Note: The motor speed will start slowly while the pressure is low (<...

  • Page 18: Measuring Pressure With External Modules

    MAX 120 PSI 0-100 PSI -12-300 PSI -12-300 PSI AIR SUPPLY OUTPUT PUMP MEASURE DPC-300A FILTER PRESSURE CHARGE MODULE MARTEL ELECTRONICS FINE ADJUST / VENT REGULATOR HOME PRESSURE VACUUM PUMP ZERO SELECTOR PUMP MAIN VOLTS /mA SELECTOR WARNING:...

  • Page 19: Measuring Voltage

    3. This selection can only be made in the lower display. Also, in source mode, the calibrator will generate 0 ... 24 mA using its own internal 24 V supply, whereas in simulation mode the calibrator acts as a 2-wire transmitter and requires an external 24 V supply. 4.
  • Page 20 MAX 120 PSI 0-100 PSI -12-300 PSI -12-300 PSI AIR SUPPLY OUTPUT PUMP MEASURE hose if possible DPC-300A FILTER PRESSURE CHARGE MODULE MARTEL ELECTRONICS FINE ADJUST / VENT REGULATOR HOME PRESSURE VACUUM PUMP ZERO SELECTOR Pressure PUMP Switch MAIN VOLTS /mA...
  • Page 21 5. Apply pressure with the pump slowly until the switch opens. Note: In the switch test mode the display update rate is increased to help capture changing pressure inputs. Even with this enhanced sample rate the device under test should be charged slowly with pressure in order to ensure accurate readings.

  • Page 22: Calibrating Transmitters

    9. Select the "NEW TEST" option to clear the data and perform another test. 10. Select the "DONE" option to end the test and return to the standard pressure setting. Example: [P1] ST will return to [P1]. The previous example uses a normally closed switch. The basic procedure is effectively the same for a normally open switch, the display will simply read "OPEN"...
  • Page 23 MAX 120 PSI 0-100 PSI -12-300 PSI -12-300 PSI AIR SUPPLY OUTPUT PUMP MEASURE DPC-300A FILTER PRESSURE CHARGE MODULE MARTEL ELECTRONICS FINE ADJUST / VENT REGULATOR HOME PRESSURE VACUUM PUMP ZERO SELECTOR PUMP MAIN VOLTS /mA SELECTOR WARNING:...
  • Page 24 -12-300 PSI AIR SUPPLY OUTPUT PUMP MEASURE DPC-300A VOLTS 30.000 V FILTER PRESSURE CHARGE MODULE CONFIG LOWER MORE MARTEL ELECTRONICS FINE ADJUST / VENT REGULATOR HOME PRESSURE VACUUM PUMP ZERO SELECTOR PUMP Signal Output Pressure +24V Power MAIN VOLTS /mA...
  • Page 25 Example: Suppose a pressure transmitter under test has a full scale range of 2 bar and gives a corresponding 4 ... 20 mA output signal. The user can programme in a 0 ... 2 bar pressure span into the calibrator and the calibrator will then calculate and display the deviation or %-Error value from the 4 ...
  • Page 26 5. Use "SELECT" to scroll through the "UNIT" options, and select "NEXT" to move on. 6. Use the arrow keys to set the upper limit of the measuring range; select "DONE SET" when finished. 7. Use the arrow keys to set lower limit of the measuring range, and select "DONE SET"...

  • Page 27: Minimum And Maximum Storage Capability

    5. Minimum and Maximum Storage Capability The 300 Series Pressure Calibrators have a min/max feature for capturing the minimum and maximum values of any displayed parameter. The min/max function can be accessed by stepping through the menu options until “min/max” is shown on the display above the F1 key. At this time, pressing the F1 key will toggle the display through the min/ max values that are stored in the min/max registers.

  • Page 28: Remote Operation

    NOTE: To use the remote control option a custom RS-232 cable must be purchased from Martel (LEM232). To contact Martel refer to Section 1.1 of this manual. With this connection the user can write programs on the PC, with Windows languages like Visual Basic to operate the calibrator, or use a Windows terminal, such as Hyper Terminal, to enter single commands.

  • Page 29: Changing Between Remote And Local Operation

    from most office supply and computer stores. To connect the calibrator to the computer, attach the LEMO connector end of the cable to the pressure module port on the right side of the calibrator and the DB-9 connector to the RS-232 port on the computer. The calibrator should be turned off prior to making the connection and then turned on.

  • Page 30: Using Commands

    6.4 Using Commands 6.4.1 Command types Refer to the Section 10.5 on Remote Commands for all available commands. The calibrator may be controlled using commands and queries. All commands may be entered using upper or lower case. The commands are divided into the following categories: Calibrator Commands Only the calibrator uses these commands.
  • Page 31 Data returned as keywords. For example: PRES_UNIT? returns BAR,BAR,PSI Indefinite ASCII (IAD) Any ASCII characters followed by a terminator. For example: *IDN? returns MARTEL, DPC-300A, 250, 1.00 6.4.4 Calibrator Status Error Queue If an error occurs due to invalid input or buffer overflow, its error code is sent to the error queue.

  • Page 32: Remote Commands And Error Codes

    6.5 Remote Commands and Error Codes The following tables list all commands, and their descriptions, that are accepted by the calibrator. Table 5: Common Commands Command Description *CLS (Clear status.) Clears the error queue. *IDN? Identification query. Returns the manufacturer, model num- ber, and firmware revision level of the Calibrator.
  • Page 33 LOCKOUT Locks out the keypad of the calibrator in remote operation LO_ERR Sets the 0% of span limit for percent error mode LO_ERR Returns the 0% of span limit for percent error mode MOTOR_ON Turns the motor on. MOTOR_OFF Turns the motor off. MOTOR? Returns the current state of the Hart resistor Set the calibrator to output the requested current.

  • Page 34: Entering Commands

    PERCENT Percent P1 pressure measurement function ST_P1 Switchtest mode with P1 ST_EXT Switchtest mode with external module SOURCE Source state Simulate state UPPER Designates Upper display Voltage Table 8: Error Codes Error Number Error Description A non-numeric entry was received where it should be a numeric entry Too many digits entered Invalid units or parameter value received...
  • Page 35 When writing programs, use before each procedure to avoid buffer overflow. *IDN? Returns the manufacturer, model number, and firmware revision of the Calibrator. For example: *IDN? will return MARTEL, DPC300A, 0, 1.00 6.6.2 Calibrator Commands DAMP Turns the dampening function on or off. For example:...
  • Page 36 For example, if a value for current output is entered that is bigger than the supported range (0-24mA) FAULT? Would return: 103 which is the code number for an entry over range. Refer to the Error Codes table for more information on error code numbers.
  • Page 37 ERROR _ PORT? Returns the current pressure port for percent error mode. For example: If you send ERROR _PORT?, it will return P1 if the pressure port in percent error is [P1]. FUNC Sets the display indicated in argument one to the function indicated in argument 2.
  • Page 38 HI_ERR? Returns the 100% point for the percent error mode calculation. For example: If the 100% point is set to 100 psi, HI_ERR? would return 1.000000E+02, PSI . IO_STATE Sets the input/output/simulate state of the mA function of the calibrator. Does not put the calibrator in mA if it is not in it already.
  • Page 39 LO_ERR? Returns the 0% point for the percent error mode calculation. For example: If the 0% point is set to 20 psi, LO_ERR? would return 2.000000E+01, PSI . MOTOR_ON Turns the motor on. MOTOR_OFF Turns the motor off. MOTOR? Returns the state of the motor. For example: If the motor was on MOTOR? Would return ON.
  • Page 40 PUMP_LIMIT Sets the approximate pressure in psi at which the pump will turn off. For example: PUMP_LIMIT 50 sets the approximate value that the pump will shutoff at to 50 psi PUMP_LIMIT? Returns the pump limit. Using the above example, PUMP_LIMIT? Would return: 50.000 REMOTE...
  • Page 41 ST_OPEN? Returns the pressure that the switch opened at in the current pressure units. ST_DEAD? Returns deadband of the switch in the current pressure units. VAL? Returns the value of any measurement taking place on the upper and lower display. For example, if the upper display is measuring 5mA, and the lower display is measuring 10V, then VAL? will return: 5.000000E-03, A, 1.000000E+01, V...

  • Page 42: Specifications (15 °C To 35 °C Unless Otherwise Noted.)

    7. Specifications (15 °C to 35 °C unless otherwise noted.) General Instrument Setup Recall 5; last used on power-up Environmental Operating Temperature -10 °C to +50 °C Storage Temperature -20 °C to +60 °C Battery Type DC 16V, NiMH rechargeable battery Battery Life (fully-charged) Approx.

  • Page 43: Maintenance

    “Return Material Author ization” form can be obtained from our website www.martelcorp.com under customer service. You can also call 1-800-821-0023 to have a form faxed. Martel will not be responsible for damage as a result of poor return packaging. Out of warranty repairs and recalibration will be subject to specific charges.
  • Page 44 Ranges and Resolutions Range (PSI) 300 PSI / 20 Bar Burst Pressure (PSI) 2000 Proof Pressure (PSI) Engineering Unit Factor 300.00 0.06894757 20.684 mbar 68.94757 20684 6.894757 2068.4 .00689476 2.0684 kg/cm2 0.07030697 21.092 cmH2O @ 4°C 70.3089 21093 cmH2O @ 20°C 70.4336 21130 mmH2O @ 4 °C...
  • Page 48 Tel: (603) 434-1433 800-821-0023 Fax: (603) 434-1653 Martel Electronics 3 Corporate Park Dr. Derry, NH 03038 0220022 Rev B 4/13...

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