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MC1210
User Manual
56 pgs806.56 Kb0
Operating Manual
54 pgs398.28 Kb0

Martel Electronics MC1210 User Manual

MC1210
Reference Manual
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.1 Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.2 Standard Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.3 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2. Calibrator Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.1 Main Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.2 Menu Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.3 Cursor control / Setpoint control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3. Using Measure Modes (Lower Display) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.2 Measuring mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.3 Measuring Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
3.4 Measuring Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4. Using Source Modes (Lower Display) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
4.1 Setting 0% and 100% Output Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
4.2 Using the Automatic Output Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
4.3 Sourcing mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
4.4 Simulating a Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4.5 Sourcing volts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4.6 Sourcing frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.7 Sourcing a pulse train . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.8 Sourcing Thermocouples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
4.9 Sourcing Ohms/RTDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
5. Using Isolated Measure Modes (Upper Display) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
5.1 Measuring volts and mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
5.3 Measuring Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
6. Using the Upper and the Lower Display for Calibration and Testing . . . . . . . . . . . . . . . . . .25
6.1 Testing an Input or Indicating Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
6.2 Calibrating an I/P Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
6.3 Calibrating a Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
6.4 Calibrating a Pressure Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
7. Performing a Switch Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
7.1 Performing an Temperature Switch Test: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
8. Remote Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
8.1 Setting up the RS-232 Port for Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
8.2 Changing Between Remote and Local Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
8.3 Using Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
8.4 Remote Commands and Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
8.5 Entering Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
9. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
10. Maintenance / Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
10.1 Replacing Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
10.2 Cleaning the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
10.5 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
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3
1. Introduction
The Martel MC1210 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
• Setpoints in each range for quickly increasing/decreasing output
• An interactive menu
• Complete serial interface for remote control
• Isolated read back for transmitter calibration
• Switchtest capability
1.1 Customer Service
Corporate Office:
www.martelcorp.com
e-mail: sales@martelcorp.com
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:
MC1210 Calibrator, Instruction Manual, Test Leads, Rubber Boot, NIST Certificate
4
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
DC
Double Insulated
Electric Shock
Fuse
PE Ground
Hot Surface (Burn Hazard)
Read the User’s Manual (Important Information)
Off
On
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.
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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, switchtest,
mA terminals, switchtest and supplying 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 remote control.
6
5
3
4
2
1
9
8
7
6
F1 F2 F3
CE ENTER
89
4
1
–
5
2
0
6
3
.
7
HOME
Figure 1. Input/Output Terminals
7
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
F1
89
4
1
–
5
2
0
6
3
.
F2 F3
7
CE ENTER
5
3
4
2
1
HOME
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 4-wire)
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.
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9
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 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 MC1210 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.
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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 set the amount of time the unit needs to stay dormant to shut off. [NEXT] and [DONE] both return to 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.
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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.
Figure 4. The Menu Tree
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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 8. 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.
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Note: The TC wire used must match the thermocouple type being calibrated.
3. Choose 2, 3, or 4-wire connection [2W, 3W, 4W]. (4-wire allows for the most precise measurement)
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 MC1210 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, inH
2
O, cmH2O, etc. are not valid selections. Selecting one of this 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.
14
15
To measure pressure, follow these steps:
1. Connect the pressure module to the calibrator as shown in Figure 9. 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.
Note: Make sure the calibrator is on before you plug in the pressure module.
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.
PRESSURE
MODULE
VALVE
F1 F2 F3
CE ENTER
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4
1
–
5
2
0
6
3
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7
HOME
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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 [F2] key to step in either 25% or 10% 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.
3. Step Size, the step size can be set to either 10% or 25%
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 either 10% or 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.
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Figure 10. Connections for Sourcing Current
4.3-1 HART™ Resistor Selection
The MC1210 can be set-up so that the 250 ohm resistor required for Hart™ configuration devices resides inside the MC1210. Enabling the MC1210's internal 250 ohm resistor eliminates the need to manually add a series resistor during a Hart™ calibration process.
NOTE: When the MC1210'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.
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