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Martel MC1200 Reference Manual

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MC1200
Reference Manual

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Summary of Contents for Martel MC1200

  • Page 1 MC1200 Reference Manual...

  • Page 2: Table Of Contents

    1. Introduction ............3 1.1 Customer Service .

  • Page 3: Introduction

    1. Introduction The Martel MC1200 Multifunction Process Calibrator is a handheld, battery-operated instrument that measures and sources electrical and physical parameters. The calibrator has the following features and functions: • A dual display. The upper display is used for the measurement of volts, current, and pressure.

  • 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 Warning To avoid possible electric shock or personal injury: • Do not apply more than the rated voltage. See specifications for supported ranges. • Follow all equipment safety procedures. • Never touch the probe to a voltage source when the test leads are plugged into the current terminals.

  • Page 6: Calibrator Interface

    2. Calibrator Interface Figure 1 shows the location of the input and output connections on the calibrator, while Table 1 describes their use. Figure 1. Input/Output Terminals Table 1: Input and Output Terminals Name Description 1, 2 Measure Isolated V, Input terminals for measuring current, voltage, and supplying mA terminals loop power.

  • Page 7: Main Display

    Figure 2 shows the location of the keys on the calibrator. Table 2 lists the functions of each key. Figure 2. Keypad Table 2. Key Functions Name Function Function Keys F1, F2, F3 Used to operate the menu bar at the bottom of the calibrator display.

  • Page 8: Menu Bar

    The display of the calibrator, shown in Figure 3, is divided into three main sections: the upper display, the lower display, and the menu bar. The upper display is used for measuring dc voltage, dc current with and without loop power, and pressure.
  • Page 9 [DONE] returns to home menu. Contrast is adjusted using the arrow options, which are available after choosing [CONTRAST]. NOTE: The MC1200 calibrator offers a wide range contrast adjustment feature to accommodate operation in extreme temperatures. In certain cases making large changes in contrast may render the display difficult to read under normal conditions.
  • Page 10 1. Turn on the unit while holding down the “HOME” key. 2. Hold the key down for a count of 10 seconds to restore contrast default settings. If the display is so dim that you cannot tell if the unit is on or off, use the backlight key to determine if the power is on or off.

  • Page 11: Cursor Control / Setpoint Control

    2.3 Cursor control / Setpoint control The output value can be controlled by the four cursor control arrows on the keypad. By pressing one of the arrows a cursor will be added to the display under the last digit of the output value.

  • Page 12: Using Measure Modes (Lower Display)

    3. Using Measure Modes (Lower Display) 3.1 Measuring volts and frequency Electrical parameters volts and frequency can be measured using the lower display. To make the desired measurements, follow these steps: 1. Switch to the lower display [LOWER] from Main Menu. 2.

  • Page 13: Measuring Temperature

    3.3 Measuring Temperature 3.3-1 Using Thermocouples The calibrator supports the following thermocouple types: B, C, E, J, K, L, N, R, S, T, U, BP , and XK. The characteristics of all the types are described in Specifications section. The calibrator also has a Cold Junction Compensation (CJC) function.

  • Page 14: Measuring Pressure

    RTD which is not programmed into the calibrator. 3.4 Measuring Pressure Note: The Martel Pressure Module connector 700mA needs to be purchased to connect pressure module to calibrator. Note: The MC1200 is compatible with BETA Calibrator Pressure Modules. The accessory BPPA-100 is required for pressure measurement.
  • Page 15 To measure pressure, follow these steps: 1. Connect the pressure module to the calibrator as shown in Figure 9. using the 700mA pressure module adapter. The calibrator can measure pressure on both the upper and the lower display. This makes it possible to measure pressure in two different units at the same time. 2.

  • Page 16: Using Source Modes (Lower Display)

    4. Using Source Modes (Lower Display) The calibrator can generate calibrated signals for testing and calibrating process instruments. It can source voltages, currents, resistances, frequencies, pulses, and the electrical output of RTD and thermocouple temperature sensors. 4.1 Setting 0% and 100% Output Parameters To set the 0% and 100% points, use the following steps: 1.

  • Page 17: Hart™ Resistor Selection

    Figure 10. Connections for Sourcing Current 4.3-1 HART™ Resistor Selection The MC1200 can be set-up so that the 250 ohm resistor required for Hart™ configuration devices resides inside the MC1200. Enabling the MC1200's internal 250 ohm resistor eliminates the need to manually add a series resistor during a Hart™ calibration process.

  • Page 18: Simulating A Transmitter

    4.4 Simulating a Transmitter To have the calibrator supply a variable test current to a loop in place of a transmitter, follow these steps: 1. Select lower display from the Main Menu. 2. Choose mA simulation from the primary parameters [mA 2W SIM], and enter the desired current.

  • Page 19: Sourcing Frequency

    4.6 Sourcing frequency To source a signal use these steps: 1. Switch to the lower display and select frequency from the primary parameters. 2. Select output, and than choose the frequency units. 3. Connect the leads to the frequency output terminals as shown in Figure 12. 4.

  • Page 20: Sourcing Thermocouples

    Figure 13. Connections for Outputting Thermocouples 4.8 Sourcing Thermocouples To source a thermocouple use the following steps: 1. Connect the thermocouple leads to the appropriate polarized TC miniplug, and insert the plug into the TC terminals on the calibrator, as shown in Figure 13. 2.

  • Page 21: Sourcing Ohms/Rtds

    4.9 Sourcing Ohms/RTDs To source an RTD, follow these steps: 1. Select lower display from the Main Menu, and choose [RTD] from the primary parameters. 2. Choose output [OUT] from the input/output control, and select RTD type from the sensor types.

  • Page 22: Using Isolated Measure Modes (Upper Display)

    temperature, maximum temperature, R0, and the values for each of the temperature coefficients. The custom function uses the Calendar-Van Dusen equation for outputting and measuring custom RTDs. The coefficient C is only used for temperatures below 0°C. Only A and B coefficients are needed for the range above 0°C, so coefficient C should be set to 0.

  • Page 23: Hart™ Resistor Selection

    Figure 17. Connection Using Current Loop 5.2-1 HART™ Resistor Selection The MC1200 can be set-up so that the 250 ohm resistor required for Hart™ configuration devices resides inside the MC1200. Enabling the MC1200's internal 250 ohm resistor eliminates the need to manually add a series resistor during a Hart™ calibration process.
  • Page 24 Warning! To avoid a violent release of pressure in a pressurized system, shut off the valve and slowly bleed off the pressure before you attach the pressure module to the pressure line. Caution To avoid mechanically damaging the pressure module, never apply more than 10 ft-lb. of torque between the pressure module fittings, or between the fittings an the body of the module.

  • Page 25: Using The Upper And The Lower Display For Calibration And Testing

    6. Using the Upper and the Lower Display for Calibration and Testing 6.1 Testing an Input or Indicating Device To test and calibrate actuators, recording, and indicating devices using the source functions, follow these steps: 1. Select the lower display and choose the correct primary parameter. 2.

  • Page 26: Calibrating A Transmitter

    6.3 Calibrating a Transmitter To calibrate a transmitter both the upper and the lower displays will be used; one for measuring and the second a source. This section covers all but the pressure transmitters. A thermocouple temperature transmitter is used in this example. The following steps show how to calibrate a temperature transmitter: 1.

  • Page 27: Remote Operation

    Figure 22. Calibrating a Pressure Transmitter 7. Remote Operation The calibrator can be remotely controlled using a PC terminal, or by a computer program running the calibrator in an automated system. It uses an RS-232 serial port connection for remote operation. 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 28: Changing Between Remote And Local Operation

    Serial parameter values: 9600 baud 8 data bits 1 stop bit no parity Xon/Xoff EOL (End of Line) character or CR (Carriage Return) or both To set up remote operation of the calibrator on the Windows Hyper Terminal, connected to a COM port on the PC as in Figure 23, use the following procedure: 1.
  • Page 29 Calibrator Commands Only the calibrator uses these commands. For example LOWER_MEAS DCV tells the calibrator to measure voltage on the lower display. Common Commands Standard commands used by most devices. These commands always begin with an "*". For example *IDN? tells the calibrator to return its identification.
  • Page 30 RTD_TYPE? returns PT385_10 Indefinite ASCII (IAD) Any ASCII characters followed by a terminator. For example: *IDN? returns MARTEL, ASC300, 250, 1.00 7.3-4 Calibrator Status Status registers, enable registers, and queues provide status information on the calibrator. Each status register and queue has a summary bit in the Serial Poll Status Byte. Enable registers generate summary bits in the Serial Poll Status Byte.
  • Page 31 Service Request Enable Register (SRE) Enables or disables the bits of the STB. Cleared when power is reset. Setting bits to 0 disables them in the STB. Setting the bits to 1 enables them. Bit assignments for the SRE and the STB are shown below.

  • Page 32: Remote Commands And Error Codes

    Command Error. Set to 1 when the calibrator receives an invalid command. Entering an unsupported RTD type may cause such an error. Execution Error. Set to 1 when the calibrator runs into an error while executing is last command. A parameter that has too significant figures may cause such an error.
  • Page 33 Table 5: Common Commands Command Description *CLS *CLS (Clear status.) Clears the ESR, the error queue, and the RQS bit in the status byte. Terminates pending Operation Complete commands *ESE Loads a byte into the Event Status Enable register. *ESE? Returns the contents of the Event Status Enable register.
  • Page 34 Command Description FREQ_TYPE Set the frequency output to continuous (frequency) or pulse. FREQ_TYPE? Returns frequency output type, continuous or pulse FREQ_UNIT Sets the unit for frequency and pulse FREQ_UNIT? Returns the unit for frequency and pulse FUNC? Returns the current mode of the upper and lower display LOCAL Returns user to manual operation of the calibrator LOCKOUT...
  • Page 35 Table 7: Parameter units Units Meaning milliamps of current Voltage in millivolts Voltage in volts Frequency in cycles per minute Frequency in Hertz Frequency in kiloHertz Ohms Resistance in Ohms Temperature in Celsius Temperature in Fahrenheit Pressure in pounds per square-inch InH2O4C Pressure in inches of water at 4°C InH2O20C...

  • Page 36: Entering Commands

    Returns the contents of the Event Status Register in decimal form. For example: If the ESR contains 10111001, *ESR? will return 185. *IDN? Returns the manufacturer, model number, and firmware revision of the Calibrator. For example: *IDN? will return MARTEL, MC1200, 250, 1.00...
  • Page 37 *OPC Enables the Operation Complete setting in the ESR. This setting makes it possible to check if an operations is complete after it has been initialized. For example this operation could be used with the command TRIG. *OPC? Returns 1 when all operations are complete, and causes program execution to pause until all the operations are complete.
  • Page 38 CJC_STATE Turns Cold Junction Compensation (CJC) on or off, when the calibrator is in thermocouple (TC) mode. The command is used by adding ON or OFF after it. For example: CJC_ STATE OFF turns CJC off. CJC_STATE? Tells whether the Cold Junction Compensation in thermocouple mode is turned on or turned off.
  • Page 39 CPRT_COEFC? Returns the number which was entered for the first coefficient of the polynomial used in the custom RTD. Using the example above CPRT_COEFC? Would return: -5.801900E-12 CPRT_MIN_T Sets the minimum temperature of the custom RTD range. The temperature value must be entered with a degrees label, CEL for Celsius and FAR for Fahrenheit.

  • Page 40: Freq_Type

    103 which is the code number for an entry over range. Refer to the Error Codes table for more information on error code numbers. FREQ_LEVEL Sets the amplitude of the wave used in the Frequency Out and Pulse modes. The range for amplitude entered may be found in the Specifications section.

  • Page 41: Local

    Returns the model and serial number of the attached pressure unit. Returns NONE if no pressure unit is attached. For example: PRES? Will return MARTEL,001PNS,3,0 PRES_UNIT? Returns the pressure units of both the upper and the lower display. For example if the unit on...

  • Page 42: Pulse_Cnt

    PULSE_CNT Sets the number of pulses the calibrator will produce when it is triggered while in pulse mode. For example; PULSE_CNT 3000 will set the number of pulses to 3000. PULSE_CNT? Returns the number of pulses in the pulse train. Using the above example, the returned value would be: 3000 REMOTE...

  • Page 43: Sim

    Sets the output for current simulation. This command also switches the calibrator into mA simulation mode. A number and a unit must be entered after the command. For example: SIM 5 MA sets the current simulation at 5 mA SIM? Returns the output of the current simulation.

  • Page 44: Tsens_Type

    TSENS_TYPE? Returns the type of sensor that is currently set to measure temperature, either TC or RTD. UPPER_MEAS Sets the measuring mode for the upper display. After the command enter DCI for mA, DCI_LOOP for mA with loop power, DCV for volts, and PRESSURE for pressure. For example: UPPER_MEAS DCV sets the upper display to measure volts U_PRES_UNIT Sets the unit for measuring pressure on the upper display.

  • Page 45: Specifications

    8. Specifications All measurements apply at 23°C ± 5°C. unless specified otherwise. Outside of this range the stability of the measurements is ± 0.005%of reading/°C. Table 9: General Specifications Operating Temperature -10°C to 50° Storage Temperature -20°C to 70°C Power 4 X AA batteries;...
  • Page 46 Table 13: Resistance Measurement Range Accuracy(% of reading ± floor) Ohms low 0.00 - 400.0 0.025% ± 0.05 Ohms high 401.0 - 4000.0 0.025% ± 0.5 Table 14: Resistance Source Range Excitation Current Accuracy(% of reading ± floor) Ohms low - 400.0 0.1mA - 0.5mA 0.025% ±...
  • Page 47 TC type Range (°C) Accuracy -200.0 - 0.0 0.0 - 600.0 0.25 -200.0 - 0.0 0.0 - 1300.0 All TC errors include CJC errors CJC error outside of 23 ± 5°C is 0.05°C/°C (In °C add .2 for cold junction compensation error.) Table 17: RTD Read and Source RTD Type Range (°C)

  • Page 48: Maintenance / Warranty

    Receiving Department to accept the shipment. Any package not so marked will not be accepted and will be returned to the shipper. 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 49 Tel: (603) 434-8179 800-821-0023 Fax: (603) 434-1653 Martel Electronics PO Box 770 1F Commons Drive Londonderry, NH 03053 8/05 Rev F 0219114...

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