Martel Electronics DMC-1400 Operating Manual

DMC1400

Reference Manual

8. Document Mode . . . . . . . . . . . . . . .46

8.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

8.2 As Found Test . . . . . . . . . . . . . . . . . . . . . . . . . . 54

8.3 Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

8.4 As Left Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

8.5 Viewing Test Results. . . . . . . . . . . . . . . . . . . . . 67

8.6 Printing Test Results . . . . . . . . . . . . . . . . . . . . . 68

8.7 Uploading Test Results. . . . . . . . . . . . . . . . . . . 69

8.8 Clearing Test Results . . . . . . . . . . . . . . . . . . . . 70

8.9 Setting Date & Time . . . . . . . . . . . . . . . . . . . . . 70

9. USV Utility Program . . . . . . . . . . . . .71

9.1 System Requirements. . . . . . . . . . . . . . . . . . . . 71

9.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

9.3 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

9.4 File Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

9.5 Tags Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

9.6 Reports Menu . . . . . . . . . . . . . . . . . . . . . . . . . . 73

9.7 Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

10. Specifications . . . . . . . . . . . . . . . . .75

11. Maintenance / Warranty . . . . . . . . .79

1. Introduction . . . . . . . . . . . . . . . . . . . .1

1.1 Customer Service. . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Standard Equipment. . . . . . . . . . . . . . . . . . . . . . 1

1.3 Safety Information . . . . . . . . . . . . . . . . . . . . . . . 2

2. Calibrator Interface . . . . . . . . . . . . . .4

2.1 Main Display . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

2.2 Menu Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

2.3 Cursor Control / Setpoint Control . . . . . . . . . . . . .9

3. Using Measure Modes

(Lower Display) . . . . . . . . . . . . . . . .11

3.1 Measuring Volts and Frequency . . . . . . . . . . . . 11

3.2 Measuring mA . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.3 Measuring Temperature . . . . . . . . . . . . . . . . . . 12

3.4 Measuring Pressure . . . . . . . . . . . . . . . . . . . . . 13

4. Using Source Modes (Lower Display)15

4.1 Setting 0 % and 100 % Output Parameters . . . 15

4.2 Using the Automatic Output Functions . . . . . . . 15

4.3 Sourcing mA . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.3-1 HART™ Resistor Selection. . . . . . . . . . . . . . . 16

4.4 Simulating a Transmitter . . . . . . . . . . . . . . . . . . 17

4.5 Sourcing Volts . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.6 Sourcing Frequency . . . . . . . . . . . . . . . . . . . . . 18

4.7 Sourcing a Pulse Train . . . . . . . . . . . . . . . . . . . 18

4.8 Sourcing Thermocouples . . . . . . . . . . . . . . . . . 19

4.9 Sourcing Ohms/RTDs. . . . . . . . . . . . . . . . . . . . 20

5. Using Isolated Measure Modes (Upper

Display) . . . . . . . . . . . . . . . . . . . . . .21

5.1 Measuring Volts and mA. . . . . . . . . . . . . . . . . . 21

5.2 Measuring Current with Loop Power . . . . . . . . . 21

5.2-1 HART™ Resistor Selection . . . . . . . . . . . . . . 22

5.3 Measuring Pressure . . . . . . . . . . . . . . . . . . . . . 22

6. Using the Upper and the Lower Display

for Calibration and Testing . . . . . . .24

6.1 Testing an Input or Indicating Device . . . . . . . . 24

6.2 Calibrating an I/P Device . . . . . . . . . . . . . . . . . 24

6.3 Calibrating a Transmitter . . . . . . . . . . . . . . . . . 25

6.4 Calibrating a Pressure Transmitter. . . . . . . . . . . 25

7. Remote Operation . . . . . . . . . . . . . .26

7.1 Setting up the RS-232 Port for Remote Control . 26

7.2 Changing Between Remote and Local Operation27

7.3 Using Commands. . . . . . . . . . . . . . . . . . . . . . . 27

7.4 Remote Commands and Error Codes . . . . . . . . 31

7.5 Entering Commands. . . . . . . . . . . . . . . . . . . . . 35

1. Introduction

The Martel DMC1400 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. The lower display can be used to measure volts, current, pressure, resistance temperature detectors (RTDs), thermocouples, frequency, and resistance, and to source pulse trains

• A thermocouple (TC) input/output terminal with automatic reference-junction temperature compensation.

• Five setpoints in each range for increasing/decreasing output

• An interactive menu

• Complete RS232 interface for remote control

• Isolated read back for transmitter calibration.

• Documenting capability for up to 50 tags.

1.1 Customer Service

Corporate Office:

www.martelcorp.com

e-mail: sales@martelcorp.com

Tel: (603) 434-8179 800-821-0023 Fax: (603) 434-1653

Martel Electronics

PO Box 770

1F Commons Drive

Londonderry, NH 03053

1.2 Standard Equipment

Check to see if your calibrator is complete. It should include: DMC1400 Calibrator, Instruction Manual, Test Leads, Rubber Boot, RS-232 cable, USB

adapter cable, Nylon canvas carrying case, DVD/CD Training, Quick Start Guide, NIST Certificate

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

PE Ground

Hot Surface (Burn Hazard)

Read the User’s Manual (Important Information)

Off

Canadian Standards Association

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.

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.

• Do not use the calibrator if it is damaged. Before you use the calibrator, inspect the case. Look for cracks or missing plastic. Pay particular attention to the insulation surrounding the connectors.

• Select the proper function and range for your measurement.

• Make sure the battery cover is closed and latched before you operate the calibrator.

• Remove test leads from the calibrator before you open the battery door.

• Inspect the test leads for damaged insulation or exposed metal. Check test leads continuity. Replace damaged test leads before you use the calibrator.

• When using the probes, keep your fingers away from the probe contacts. Keep your fingers behind the finger guards on the probes.

• Connect the common test lead before you connect the live test lead. When you disconnect test leads, disconnect the live test lead first.

• Do not use the calibrator if it operates abnormally. Protection may be impaired. When in doubt, have the calibrator serviced.

• Do not operate the calibrator around explosive gas, vapor, or dust.

• When using a pressure module, make sure the process pressure line is shut off and depressurized before you connect it or disconnect it from the pressure module.

• Disconnect test leads before changing to another measure or source function.

• 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.

• 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 possible damage to calibrator or to equipment under test:

• Use the proper jacks, function, and range for your measurement or sourcing application.

• 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.

• To avoid damaging the pressure module from overpressure, never apply pressure above the rated maximum printed on the module.

• To avoid damaging the pressure module from corrosion, use it only with specified materials. Refer to the pressure module documentation for material compatibility.

2. Calibrator Interface

Figure 1 shows the location of the input and output connections on the calibrator, while Table 1 describes their use.

Table 1: Input and Output Terminals

No. Name Description

1, 2 Measure Isolated V, Input terminals for measuring current, voltage, and supplying

mA terminals loop power.

3 TC input/output Terminal for measuring, or simulating thermocouples. Accepts

miniature polarized thermocouple plugs with flat in-line blades spaced 7.9 mm (0.312 in) center to center.

4,5 Source/Measure Terminals for sourcing and measuring voltage, frequency,

V,RTD 2W, Hz, pulse train, and RTDs

6,7 Source/Measure Terminals for sourcing and measuring current, and performing

mA terminals, 3W 4W RTD measurements with 3-wire or 4-wire setups.

8 Pressure module connector Connects calibrator to a pressure module for pressure meas-

urements.

9 Serial port Connects calibrator to a PC for uploading data or remote

control or to a serial printer for printing calibration certificates.

Figure 1. Input/Output Terminals

Figure 2 shows the location of the keys on the calibrator. Table 2 lists the functions of each key.

Table 2. Key Functions

No. Name Function

1 Function Keys F1, F2, F3 Used to operate the menu bar at the bottom of the calibrator

display. F1 is used for selecting options in the left box, F2 for

the center box, and F3 for the right box. 2 Home Returns to home menu on the menu bar. 3 Power Turns calibrator on and off. 4 Cursor Control Key Left and right arrow keys are used to select which decade to

be changed in output value. Up and down arrow keys are used

to increase, decrease, or ramp output value. 5 Numeric Keypad Allows user to enter Numeric values.

2.1 Main Display

Figure 3. Display

Figure 2. Keypad

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.

The lower display can be used for both measuring and sourcing. The menu bar is used to setup both the upper and the lower display to perform the desired

function. Table 3 explains the different parts of the display:

Table 3: Display Functions

No. Name Description

1 Primary Parameters Determine what parameter is going to be measured or

sourced. The available options for the upper display are:VOLTS IN, PRESSURE, mA IN, and mA LOOP. The available options for the lower display are:VOLTS, TC (thermocouple), RTD, FREQ (frequency), PULSE, PRESSURE, mA, and mA 2W SIM.

2 Input/Output control Switches the lower display between input mode (read), and

output mode (source).

3 Additional Settings Available only for TC (thermocouple), and RTD measurements.

For TC this setting turns the CJC (Cold Junction Connection) on and off. For RTD measure [RTD IN], this setting sets the number of wires used in the measurement (2-wire, 3-wire, or 4wire)

4 Span Indicator Available only for mA and mA LOOP. Shows where in the preset

span the measured value falls. Fixed for mA at 4 (0%) and 20 (100%).

5 Units Shows what unit the measurement or source value is in.

Available options are for RTD and TC (°C or °F), and for FREQ and PULSE (CPM, Hz, or KHz)

6 Sensor Types Allow for measurements to be made for different types of RTDs

and TCs. All types are shown in the Specifications. Also, displays the amplitude of the pulse and frequency source, and pressure units.

7 Numeric Displays Display the numeric values of the signal being measured, or

sourced. An "OL" reading indicates an out of range or overload condition.

2.2 Menu Bar

The parameters on the display are controlled by the menu bar, which is located at the bottom of the LCD. The function keys (F1, F2, and F3) are used to navigate through all the levels and choices of the menu bar. Refer to the menu tree for a clarification on the layout of all the levels.

The top level of the menu is the home menu. It can be accessed anytime by pressing the HOME key. There are three variations of the home menu: the input home menu, the output home menu, and the pulse home menu.

In the input home menu the only active options are [MENU] and [LIGHT]. The [MENU] option is used to enter the next level of the menu bar, the main menu. Press the corresponding function key (F1) to enter the main menu. The [LIGHT] option is used to turn on the LCD back light. Press the corresponding function key (F2) to turn on the back light.

In the output home menu there are three active options, [MENU], [LIGHT] and [STEP] or [RAMP]. The first two options work the same as in the input home menu. The third option is selectable in the Auto Function Menu and is used to turn on and off the selected auto function. See Section 4.2, Using the Automatic Output Functions. Also leaving this menu or pressing the Home button will stop the auto functions.

The pulse home menu also has three active options, [MENU], [TRIG], and [COUNTS]. The [TRIG] and [COUNTS] options are used for pulse simulation. The function of these options is explained in Section 4.2-6 (Sourcing a Pulse).

The next level of the menu bar is the main menu. The levels under the main menu depend on what mode the calibrator is in.

The main menu has three active options [UPPER], [LOWER], and [MORE]. Choosing [UPPER] calls up the parameter selection menu for the upper display. Choosing

[LOWER] calls up the parameter selection menu for the lower display. [MORE] enters the next menu level.

The Document Mode selection menu is next. Its options are [DOCUMENT], [NEXT], and [DONE]. Choosing [DOCUMENT] enters the document mode menu system described in section 8 of this manual, [NEXT] proceeds to the next menu level, and [DONE] returns to the home menu.

The Auto Function Menu is the next menu if you are in source mode. Its options are [AUTO FUNC], [NEXT] and [DONE]. [AUTO FUNC] allows you to adjust the Automatic Output Function parameters. [NEXT] proceeds to the next menu level and [DONE] returns to the home menu. See Section 4.2,Using the Automatic Output Functions.

The contrast menu is usually the next menu level. Its options are [CONTRAST], [NEXT], and [DONE]. The [CONTRAST] option is used to adjust contrast. [NEXT] proceeds to the auto off main menu, and [DONE] returns to home menu. Contrast is adjusted using the arrow options, which are available after choosing [CONTRAST].

NOTE: The DMC1400 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. If this occurs and the display is too dim or dark to read, proceed with the following process to set the contrast back to a default setting.

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. The auto off main menu contains the options [AUTO OFF], [NEXT], and [DONE]. The [AUTO OFF] option is used to turn the automatic shutoff on and off, and to set the

amount of time the unit needs to stay dormant before it shuts off. [NEXT] proceeds to the clock menu, and [DONE] returns to the home menu.

The Clock menu is the next menu displayed in the [MORE] menu sequence. Its options are [CLOCK], [NEXT], and [DONE]. Choose [CLOCK] to set the calibrator date and time as described in section 8 of this manual, [NEXT] to proceed to the terminal emulation menu, and [DONE] to return to the home menu.

The Terminal menu is the last menu displayed after choosing [MORE] in the main menu. Its options are [TERMINAL], [NEXT], and [DONE]. Choose [TERMINAL] to enter terminal emulation mode. Select [NEXT] or [DONE] to return to the home menu.

When the lower display is in the frequency or pulse mode, the frequency level menu is added after the main menu. The options available in this menu are [FREQ LEVEL], [NEXT], and [DONE]. The [FREQ LEVEL] option is used to adjust the amplitude of the wave. [NEXT] is used to access the contrast main menu, and [DONE] returns to the home menu.

When the calibrator is in RTD CUSTOM mode, the RTD custom setup menu, is inserted after the main menu. Options [SET CUSTOM], [NEXT], and [DONE] are available. [SET CUSTOM] is used to enter a custom PRT into the calibrator. Refer to Section 4.1-8a for instructions. [NEXT] is used to enter the contrast main menu, and [DONE] to return to the home menu.

The pressure zeroing main menu is the final variation to choosing [MORE] in the main menu. It has the options [ZERO ], used to zero pressure, [NEXT] and [DONE], which have the same function as above. Refer to the Section 5.3 for instructions on zeroing.

The parameter selection menu is called up when [UPPER] or [LOWER] is selected from the main menu. It contains the following options: [SELECT], [NEXT], and [DONE]. When the display is selected, a parameter will start to flash. Use the [SELECT] option to change the parameter, and the [NEXT] option to switch to another variable. [DONE] returns to the home menu and enables the selected mode.

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. The left and right arrow keys are used to select which decade to be changed in the output value. The up and down arrow keys are used to increase, decrease, or ramp the output value.

The menu bar will change to the setpoint menu with the touch of any one of the four arrow keys.

The three function keys are associated with 0, 25, and 100% values, respectively. 0 and 100% values can be stored by entering a value and then holding down the corresponding function key. The 25% key will then automatically step through the 25% values.

Home Menu

LIGHT

RAMP

Selection Menu

UPPER

LOWER

Parameter Selection

SELECT

DONE

Home Menu

Document Mode Selection

DOCUMENT

DONE

Document Menus

Source Mode?

Yes

Frequency Out

or Pulse mode?

Frequency Level Menu

FREQ LEVEL

DONE

Yes

Auto Function Menu

AUTO FUNC

DONE

RTD Custom

mode?

Yes

RTD Custom Menu

SET CUSTOM

DONE

Either display in

Pressure mode?

Yes

Pressure Zero Menu

ZERO

DONE

Figure 4. The Menu Tree

Contrast Menu

CONTRAST

DONE

Auto Off Menu

AUTO OFF

DONE

Clock Menu

CLOCK

DONE

Terminal Menu

TERMINAL

DONE

Home Menu

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. Select the desired parameter for measurement.

3. Connect leads as shown in Figure 5.

Figure 5. Measuring Volts and Frequency with Input/Output Terminals

3.2 Measuring mA

To measure mA follow these steps:

1. Switch to lower display and select mA.

2. Make sure the input/output control is set to IN.

3. Connect leads as shown in Figure 6.

Figure 6. Measuring mA with Input/Output Terminals

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. Normally this function should be ON and the actual temperature of the thermocouple will be measured. With CJC OFF, the calibrator will measure the difference between the thermocouple at the junction and at its TC input terminal.

Note: CJC off mode should only be used when calibration is being done using an external ice bath.

To use the thermocouple to measure temperature, follow these steps:

1. Attach the thermocouple leads to the TC miniplug, and insert the plug into the input/output of the calibrator, as in Figure 7.

Note: For best accuracy wait 2 to 5 minutes for the temperature between the miniplug and the calibrator to stabilize before any measurements are taken.

2. Switch to lower display from Main Menu.

3. Select TC from the primary parameters. Choose [IN] in the input/output control, and than the thermocouple type from the sensor types. The temperature unit may also be changed from Celsius to Fahrenheit.

The calibrator can also measure the mV of a Thermocouple, which can be used along with a table in case the corresponding TC type is not supported by the calibrator. To do so, proceed as above and choose mV from sensor types.

Figure 7. Measuring Temperature Using Thermocouple Terminals

3.3-2 Using Resistance-Temperature-Detectors (RTDs)

The supported types of RTDs are shown in Section 10. Specifications. RTDs are characterized by their 0°C resistance, R0. The calibrator accepts two, three, and four wire inputs, with four wire input being the most accurate.

To use the RTD option, apply the following steps:

1. Switch to lower display [LOWER] from Main Menu.

2. Select RTD from the primary parameters. Select [IN] from input/output control.

3. Choose 2, 3, or 4-wire connection [2W, 3W, 4W]. (4-wire allows for the most precise

measurement)

Note: The TC wire used must match the thermocouple type being calibrated.

4. Select RTD type from the sensor types.

5. Attach RTD leads as shown in Figure 8.

Figure 8. Measuring Temperature with RTD Connection

Resistance can also be measured using this function. To do so, use the above procedure and choose OHMS from the sensor types. This option can be used along with a table to measure an RTD which is not programmed into the calibrator.

3.4 Measuring Pressure

Note: The DMC1400 is compatible with BETA Calibrator Pressure Modules. The accessory BPPA-100 is required for pressure measurement.

Note: Pressure is not read from modules with frequency or pulse train mode enabled. Note: On high pressure modules engineering units normally associated with low pressure

ranges such as, inH2O, cmH2O, etc. are not valid selections. Selecting one of these units with a high pressure module attached will cause the display to read "----".

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.

To avoid damaging the pressure module from overpressure, never apply pressure above the rated maximum printed on the module.

To avoid damaging the pressure module from corrosion, use it only with specified materials. Refer to the pressure module documentation for material compatibility.

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. Switch to either upper or lower display from the Main Menu.

3. Select [PRESSURE] from the primary parameters.

4. Select the desired measuring unit.

5. Zero the pressure module. The zero function on the calibrator can be found in the pressure zeroing menu.

Figure 9. Connections for Measuring Pressure

3.4-1 Zeroing with Absolute Pressure Modules.

To zero, adjust the calibrator to read a known pressure, such as barometric pressure. To adjust the calibrator, follow these steps:

1. Enter the pressure zeroing menu.

2. Select [ZERO ]. [SET REFERENCE ABOVE] will appear. Enter the pressure

using the keypad.

3. The calibrator stores the Barometric zero offset in non-volatile memory. The zero offset is stored for one absolute pressure module at a time. If a new absolute

module is connected this process must be repeated.

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. Select the lower display [LOWER] from Main Menu, and choose the desired primary parameter.

2. Select output [OUT] from the input/output control, and enter the desired value. For example select [VOLTS OUT].

3. Enter 5V with the keypad and press Enter.

4. Press any one of the four cursor control arrows to display the setpoint control menu.

5. Hold down the Function Key that corresponds to 0% [F1]. 0% will flash and the setpoint is stored.

6. Repeat these steps, entering 20V and holding the Function Key that corresponds to 100% [F3].

7. Use the 25% key to cycle 5 V and 20 V in 25% increments.

4.1-1 Stepping the current output

To use the 25% function with mA output, follow these steps:

1. Select the lower display from the Main Menu, and choose mA.

2. Use the 25% key to cycle between 4 mA and 20 mA in 25 % intervals.

4.2 Using the Automatic Output Functions

There are two automatic output functions, step and ramp. The selected function can be turned on and off using the Output Home Menu. The Automatic Output Function parameters can be set in the Auto Function Menu. Parameters include:

1. Which auto function will be available (Step or Ramp).

2. The Auto Function Time, time between steps for step and time to get from over one limit to the next for ramp.

The limits for the ramp and step functions are set to the 0% and 100% values. See Section

4.1 Setting 0% and 100% Output Parameters. Steps are in 25% increments from the 0% value

to the 100% value.

4.3 Sourcing mA

To source a current, follow these steps:

1. From the Main Menu select lower display [LOWER]. Choose [mA] from the primary parameters.

2. Switch to input/output control, and select output [OUT].

3. Connect the leads to the mA terminals, as shown in Figure 10.

4. Enter the desired current using the keypad.

Figure 10. Connections for Sourcing Current

4.3-1 HART™ Resistor Selection

The DMC1400 can be set-up so that the 250 ohm resistor required for HART™ configuration devices resides inside the DMC1400. Enabling the DMC1400's internal 250 ohm resistor eliminates the need to manually add a series resistor during a HART™ calibration process.

NOTE: When the DMC1400's internal 250 resistor is enabled, maximum load driving capability drops from 1000 ohms @ 20mA to 750 ohms @20mA.

Enable/Disable Procedure

1. Remove the battery cover and remove the 2 screws that are at the top of the case.

2. Remove the 2 screws on the bottom or lower portion of the case.

3. Gently remove the top half of the case from the bottom.

4. Figure 10a. shows the location of the HART™ jumpers.

Figure 10a.

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.

3. Connect the 24V loop as shown in Figure 11.

Figure 11. Connections for Simulating a Transmitter

4.5 Sourcing volts

To source volts follow these steps:

1. Select lower display from the Main Menu.

2. Choose [VOLTS] from the primary parameters. Switch to input/output control and select output [OUT].

3. Connect the leads for the voltage source terminals, as shown in Figure 12.

4. Enter the voltage using the keypad.

Figure 12. Connections for Sourcing Voltage and 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. Enter the desired frequency using the keypad.

5. To change the amplitude, select [FREQ LEVEL] from frequency level menu.

6. Enter the amplitude.

4.7 Sourcing a pulse train

The calibrator can produce a pulse train with an adjustable number of pulses at a desired frequency. For example, setting the frequency to 60Hz and the number of pulses to 60 would produce 60 pulses for a period of 1 second. To source a pulse, use the same connection as for frequency, and proceed as follows:

1. Switch to the lower display and select pulse from the primary parameters.

2. Choose the desired unit and enter the frequency using the keypad.

3. Select the [COUNTS] function from the home menu to enter the number of pulses. Use [TRIG] to start and stop the signal.

4. The amplitude of the pulse can be adjusted in the same manner as for frequency.

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. Select lower display from the Main Menu, and choose thermocouple [TC] from the primary parameters.

3. Choose output [OUT] from the input/output control.

4. Select the desired thermocouple type from the sensor types.

5. Enter the temperature using the keypad.

Figure 14. Connections for Outputting 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.

3. Connect the calibrator to the instrument being tested, as in Figure 14.

4. Enter the temperature or resistance using the keypad.

Figure 15. Using a 3- or 4-wire Connection for RTDs

Note: The calibrator simulates a 2-wire RTD. To connect 3- or 4-wire transmitter, use stacking cables, as shown in Figure 15.

4.9-1 Custom RTD

A custom curve-fit PRT may be entered into the calibrator for sourcing and measuring. To do so follow these steps:

1. Switch to lower display. Select RTD and set sensor type to CUSTOM.

2. Enter the RTD custom setup main menu, and select [SET CUSTOM].

3. Using the keypad, enter the values that the calibrator prompts for: minimum

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. The R0 is the resistance of the probe at 0°C. The coefficients for PT385, PT3926, and PT3616 are shown in Table 4 below.

Table 4. RTD Coefficients

RTD Range(°C) R0 Coefficient A Coefficient B Coefficient C PT385 -260 - 0 100 3.9083x10-3 -5.775x10-7 -4.183x10-12 PT385 0 - 630 100 3.9083x10-3 -5.775x10-7 --PT3926 Below 0 100 3.9848x10-3 -5.87x10-7 -4x10-12 PT3926 Above 0 100 3.9848x10-3 -5.87x10-7 --PT3916 Below 0 100 3.9692x10-3 -5.8495x10-7 -4.2325x10-12 PT3916 Above 0 100 3.9692x10-3 -5.8495x10-7 ---

5. Using Isolated Measure Modes (Upper Display)

5.1 Measuring volts and mA

Use the following steps to measure the voltage or current output of a transmitter.

1. Select the upper display from the Main Menu.

2. Select the desired primary parameter to be measured. Connect the leads to the isolated inputs of the calibrator, as in Figure 16.

Figure 16. Isolated Input Connection

5.2 Measuring current with loop power

To test a 2-wire, loop powered transmitter that is disconnected from wiring, use the loop power function. This function activates a 24V supply in series with the current measuring circuit. To use this option proceed as follows:

1. Select [mA LOOP] as primary parameter in the upper display.

2. Connect the calibrator to transmitter current loop terminals, as shown in Figure 17.

Figure 17. Connection Using Current Loop

5.2-1 HART™ Resistor Selection

NOTE: When the DMC1400's internal 250 resistor is enabled, maximum load driving capability drops from 1000 ohms @ 20mA to 750 ohms @20mA.

Enable/Disable Procedure

1. Remove the battery cover and remove the 2 screws that are at the top of the case.

2. Remove the 2 screws on the bottom or lower portion of the case.

3. Gently remove the top half of the case from the bottom.

4. Figure 10a. shows the location of the HART™ jumpers.

5.3 Measuring Pressure

Note: The DMC1400 is compatible with BETA Calibrator Pressure Modules. The accessory BPPA-100 is required for pressure measurement.

Note: Pressure is not read from modules with frequency or pulse train mode enabled.

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.

To avoid damaging the pressure module from overpressure, never apply pressure above the rated maximum printed on the module.

To avoid damaging the pressure module from corrosion, use it only with specified materials. Refer to the pressure module documentation for material compatibility.

To measure pressure, follow these steps:

1. Connect the pressure module to the calibrator as shown in Figure 18. 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. Switch to either upper or lower display from the Main Menu.

3. Select [PRESSURE] from the primary parameters.

4. Select the desired measuring unit.

5. Zero the pressure module. The zero function on the calibrator can be found in the pressure zeroing menu.

Figure 18. Measuring Pressure Transmitter

Note: On high pressure modules engineering units normally associated with low pressure ranges such as, inH

O, cmH2O, etc. are not valid selections. Selecting one of these units with

a high pressure module attached will cause the display to read "----".

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. Switch to [OUT] in the input/output control.

3. Connect the leads to the instrument and the calibrator as shown in Figure 19.

Figure 19. Connections for Testing an Output Device

6.2 Calibrating an I/P Device

The following steps show how to calibrate a device that controls pressure:

1. Select upper display from the Main Menu, and select pressure from the primary parameters.

2. Switch to lower display from the Main Menu, and select current source [mA out] from the primary parameters.

3. Connect the calibrator to the device as shown in Figure 20. The calibrator will simulate the transmitter current and measure the output pressure.

4. Enter a current using the keypad.

Figure 20. Calibrating an I/P Device

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Martel Electronics DMC-1400 Operating Manual

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