1. Manuals
  2. Brands
  3. Ecom Manuals
  4. Test Equipment
  5. CP 400
  6. Operating instructions manual

Ecom CP 400 Operating Instructions Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
CP 400/420
Bedienungsanleitung
Operating Instructions
Notice d'utilisation

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the CP 400 and is the answer not in the manual?

Questions and answers

Related Manuals for Ecom CP 400

Summary of Contents for Ecom CP 400

  • Page 1 CP 400/420 Bedienungsanleitung Operating Instructions Notice d‘utilisation...

  • Page 2: Table Of Contents

    Contents 1. Introduction . Standard Equipment .2 Safety Information 2. Calibrator Interface 2. Calibrator Display 2.2 Using the Backlight 2.3 Using the Zero Function 2.4 Other Menu Controlled Functions 3. Measuring Pressure 3. Media Compatibility 3.2 Measuring Pressure with External Modules 4. Measuring Current 5. Measuring Voltage 6. Measuring Temperature with and RTD 7. Performing a Pressure Switch Test 8. Calibrating Transmitters 8. Using the mA Input Function 8.2 Calibrating a Pressure-to-Current Transmitter 8.3 Percent Error Function 9. Factory Setups 10. Custody Transfer / Flow Calibration 11. Remote Operation . Remote Interface .2 Setting up the RS-232 Port for Remote Control .3 Changing Between Remote and Local Operation .4 Using Commands .5 Remote Commands and Error Codes .6 Entering Commands 12. Specifications 13. Warranty 14. Maintenance 4. Replacing Batteries 4.2 Cleaning the Unit...

  • Page 3: Introduction

    1. Introduction The CP 400/420 is designed to be a simple to use yet very versatile pressure calibrator. Its two internal pressure sensors combined with inputs for mA, voltage, switch contacts and an RTD probe allow the 400/420 to calibrate virtually any pressure device. An external pressure module option allows an even wider range of pressure calibration options including absolute and differential. 1.1 Standard Equipment Check to see if your calibrator is complete. It should include: CP 400 or CP 420 calibrator, instruction manual, test leads, carrying case, calibration certificate. 1.2 Safety Information 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 measuring pressure, 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.

  • Page 4: Calibrator Interface

    2. Calibrator Interface Figure  shows the location of the process measurement inputs, while table  describes their use. Figure 1: Pressure Measurement Inputs Side View Table 1: Process Measurement Inputs Name Description , 2 Input Terminals These terminal are used to measure current, voltage and a contact closure for switch test. P Pressure Port This is the connection for the internal sensor P P2 Pressure Port This is the connection for the internal sensor P2 RTD Probe Connector This connector is where the RTD probe is plugged in. Serial Interface This is used to interface to optional external modules.

  • Page 5: Calibrator Display

    Figure 2 shows the location of the keys. Table 2 describes the function of each key. Figure 2: Keypad Table 2: Key Functions Name Description Function Keys These keys are used in various ways, primarily 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 Backlight Key This key is used to turn the backlight on and off 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. Figure 3 shows the location of the different display fields while table 3 describes them. Figure 3: Display...
  • Page 6 Table 3: Display Functions Name Description Primary Parameters Indicates what is being measured Span Indicator Indicates the percent of the 4 to 20 mA span. (For mA and mA Loop functions only) Pressure Units Indicates one of 7 pressure units available for display Units ndicates the unit of measure for the display 2.1.1 Main Menu Functionality There are three options on the Main Menu, CONFIG, {current display} and MORE. The Main Menu is home for the menu display. 2.1.1.1 Setting the Current Display The current display is indicated by the center option on the Main Menu, pressing the F2 key will toggle the current display. 2.1.1.2 Setting Current Display Parameters To set the parameters of the current display use the CONFIG option to get to the Display Configuration Menu. Here the SELECT option will toggle through the choices for each parameter. The first parameter is MODE. Since voltage, current and switch test modes all use the same jacks, two of these functions cannot be used concurrently. The ability to select certain functions is limited based on what is already selected in another active display. The NEXT option is used to change to the second parameter. Only RTD and Pressure modes have a second parameter, RTDs can be read in Celsius or Fahrenheit and Pressures can be read in 3 engineering units.
  • Page 7 Table 4: Mode Concurrency CURRENT DISPLAY P() P(2) (EXIT) P() P(2) (EXIT) Volt Loop P() P(2) (EXIT) P() P()ST P(2)ST (EXIT) mALoop Volt 2.1.1.3 Accessing Other Menus Use the MORE option on the Main Menu to access the other menu functions. (See page 64, Menu Map)

  • Page 8: Using The Backlight

    2.2 Using the Backlight The backlight is controlled by the dedicated backlight key. It toggles on and off when the key is pressed; this is one of the few functions that cannot be controlled by the serial interface. 2.3 Using the Zero Function When the ZERO_KEY is pressed, the calibrator will zero the current display if a pressure mode is selected, and the pressure is within the zero limit. 2.3.1 Internal Sensor and Pressure Module (non-absolute) When a sensor or module is selected on the current display and the ZERO_KEY is pressed the calibrator subtracts the current reading from the output. 2.3.2 Absolute Pressure Module When an absolute pressure module is selected on the current display and the ZERO_KEY is pressed the calibrator prompts the user to enter the barometric reference pressure. This is done using the arrow keys (F2 and F3 Keys). 2.4 Other Menu Controlled Functions There are eight ‘sub-main’ menus that can be accessed through the MORE option of the Main Menu. A ‘sub-main’ menu contains three options. The first option is unique to the function. The second and third options of a ‘sub-main’ menu are always the same. The NEXT option leads to the next ‘sub-main’ menu and the DONE option returns home . For the last ‘sub-main’ menu the NEXT option wraps around to home. See Page 64 for a detailed mapping of the menu structure.
  • Page 9 2.4.2 Locking and Unlocking Configurations Use the LOCK CFG or UNLOCK CFG option of the Configuration Lock Menu to lock or unlock the display configuration. When the LOCK CFG option is chosen the menu display returns home and the CONFIG option on the Main Menu indicates that it is locked. Also all menus are locked out with the exception of the 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. Additionally 5 set-ups can be accessed through the SETUPS menu. Select the SETUPS option from the Setups Main Menu. Choose SAVE to save a set-up , RECALL to recall the set-up, or DONE to do nothing and return home. 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. 2.4.4 Setting AutoShut-off Parameters The calibrator can be set to automatically shut-off after a selected number of minutes; this function can also be disabled. To set the auto shut off parameters select the AUTO OFF option on the Auto Shut Off Main Menu.
  • Page 10 Use the arrow keys to select the number of minutes before the calibrator turns off or disable auto shut-off by scrolling all the way down. Use the AUTO OFF DONE option to set the parameters and return home. The auto shut off time is reset whenever a key is pressed. 2.4.5 Activating and Deactivating a Display Use the DISPLAY option on the Display Selection Main Menu to access the Display Activation Menu. The {function} option can be used to select which display to act upon. The ON/OFF option turns the selected display on or off. The selected display and current on/off state are displayed in the lower display. 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. If all three displays are deactivated the LOWER display will come on automatically 2.4.6 Setting the RTD probe type Use the PROBE TYPE option of the RTD Probe Type main menu to access the RTD Probe selection menu. There are four probe types to select from P00-385, P00-392, P00-JIS and CUSTOM. Use the SELECT option to select the desired probe type and the DONE option to store the change and return home. Note: The default probe type is PT00-385.

  • Page 11: Measuring Pressure

    3. Measuring Pressure To measure pressure, connect the calibrator using an appropriate fitting. Choose a pressure setting for the display being used. The calibrator is equipped with two internal sensors and many optional external sensors (EPMs) are available. Be sure to choose the sensor based on working pressures and accuracy. Figure 5 Use the (ZERO) key to zero the pressure sensor when vented to atmospheric pressure. Important NOTE: To ensure accuracy of the calibrator it is critical to zero the calibrator before a device is calibrated. 3.1 Media Compatibility The calibrator utilizes a media isolated sensor to prevent sensor contamination. Whenever possible clean, dry air is the media of choice. If that is not always possible, make sure that the media is compatible with Nickel Plated Brass and 36 Stainless Steel. 3.2 Measuring Pressure with External Modules The calibrator provides a digital interface to External Pressure Modules. These modules are available in various ranges and types including gauge, vacuum, differential and absolute. The modules work seamlessly with the calibrator. Simply plug them into the interface and select [EXT] (external sensor). Since the interface between the calibrator and the module is digital all the accuracy and display resolution is derived from the module.

  • Page 12: Measuring Current

    Model BPPA Pressure Module Adapter Figure 6 Pressure Module 4. Measuring Current To measure current use the input terminals in the front of the calibrator. Select the mA function on one of the displays. Current is measured in mA and percentage of range. The range on the calibrator is set to 0% at 4 mA and 00% at 20 mA. For example: If the current measured is displayed as 75% then the mA value is 6 mA. Device under 24mA 4 to 20mA Test Figure 7...

  • Page 13: Measuring Voltage

    5. Measuring Voltage To measure voltage use the input terminals in the front of the calibrator. Select the Volts function on one of the displays. The calibrator can measure up to 30V. Device under Up to Test Figure 8 6. Measuring Temperature with and RTD To measure temperature using an RTD probe you must select the RTD function on one of the displays. Make sure the proper probe type is selected. There are 4 probe types supported, P00-385, P00-392, P00-JIS and CUSTOM. Note: The factory default type is PT00-385 so if the CP 400/420 is being used with the ecom Model LPT00A probe you do not have to set the probe type. Simply plug the probe into the CP 400/420 and configure the display to read temperature. If a custom probe is being used, the entering of R0 and coefficients is handled through the serial interface (see section ). RTD Probe Figure 9...

  • Page 14: Performing A Pressure Switch Test

    7. Performing a Pressure Switch Test Pressure switch under test Figure 10 To perform a switch test, follow these steps: . Change the setup to Setup 4 (default switch test). Setup 4: The upper display is set to [P] ST, all other displays are off. Important NOTE: The pressure Switch Test can be performed with the following functions[P] ST, [P2] ST, or EXT ST. 2. Connect the calibrator to the switch using the pressure switch terminals. The polarity of the terminals does not matter. Then connect the pump to the calibrator and the pressure switch. 3. Make sure the vent on the pump is open. Zero the calibrator if necessary. Close the vent after zeroing the calibrator. 4. The top of the display will read “CLOSE”.
  • Page 15 5. Apply pressure with the pump slowly until the switch opens. Important NOTE: In the switch test mode the display update rate is increased to help capture changing pressure inputs. Even with this enhanced sample rate pressurizing the device under test should be done slowly to ensure accurate readings. 6. Once the switch is open, “OPEN” will be displayed, bleed the pump slowly until the pressure switch closes. 7. At the top of the display it will now read, “SW OPENED AT” and give you the pressure that the switch opened at. 8. Press the “NEXT” option to view when the switch closed, and the dead band.

  • Page 16: Calibrating Transmitters

    9. Press the “NEW TEST” option to clear the data and perform another test. 0. Press the “DONE” option to end the test and return to the standard pressure setting. Example: [P] ST will return to [P]. Important NOTE: The previous example uses a normally closed switch. The basic procedure is still the same for a normally open switch, the display will just read “OPEN” instead of “CLOSE”. 8. Calibrating Transmitters 8.1 Using the mA Input Function The mA input function allows the user to read back the 4-20 mA output from the device being calibrated. This can be done in one of two ways. ) Passively - Where the device under test directly generates 4-20 mA and can be read by the calibrator. 2) Actively – Where the calibrator supplies 24 VDC loop power to the device under test to power the device while reading the resulting 4-20 mA signal. 2) 8.2 Calibrating a Pressure-to-Current Transmitter To calibrate a pressure-to-current transmitter (P/I), perform the following steps: . Connect the calibrator and the pump to the transmitter. 2. Apply pressure with the pump. 3. Measure the current output of the transmitter. 4. Ensure the reading is correct. If not, adjust the transmitter as necessary.

  • Page 17: Percent Error Function

    Figure 11. 8.3 Percent Error Function The calibrator features a unique function which can calculate pressure vs. milliamp error as a percentage of the 4 to 20 mA loop span. The percent error mode uses all 3 screens and has a unique menu structure. It simultaneously displays pressure, mA and percent error. Figure 12.
  • Page 18 Example: Suppose a pressure transmitter under test is 30 psi (2 Bar) Full Scale and outputs a corresponding 4 to 20 mA signal. The user can program in a 0 to 30 psi pressure span into the calibrator and the calibrator will calculate and display the deviation or % Error from the expected 4 to 20 mA output. This eliminates the need for manual calculations and also helps if it becomes difficult to set an exact pressure with an external pump. To use the %ERROR function proceed as follows: . With the calibrator turned on and operating press the F3 key to activate the MORE menu option. Now press the F key to activate the %ERROR option. 2. Press the F key to select the CONFIG option. 3. The first option is setting the Port, use the select option to scroll through the port choices, when finished select the NEXT option. 4. LOOP POWER can be toggled on/off, select NEXT when done. 5. Use SELECT to toggle through the UNIT options, and select NEXT to move on.
  • Page 19 6. Use the and arrows to set the 00% point of the desired pressure range, select DONE SET when finished. 7. Again, use the arrows to set 0% point and select DONE SET when finished and the %ERROR mode will be ready to use. Note: The 0% and 00% point will be saved in non-volatile memory until they are changed again by the user for the internal sensors, and external pressure modules. When using an external module the 0% and 00% are set to low and full scale of the module until the user changes it, or if it was previously saved.

  • Page 20: Factory Setups

    9. Factory Setups The Calibrator is loaded with five factory setups. These setups are shown below. Setup : The upper display is set to [P] mode and the middle is set to mA, lower is off. Setup 2: The upper display is set to [P2] mode and the middle is set to mA, lower is off. Setup 3: The upper display is set to [P] mode and the middle is set to [P2], lower is off. Setup 4: The lower display is set to [P] switch test, the other displays are off.

  • Page 21: Custody Transfer / Flow Calibration

    Note: The pressures in the UPPER, and MIDDLE displays can be changed to [P], [P2], and EXT. . Connect the calibrator to your static and differential pressures. ([P], [P2], EXT) Then connect the RTD sensor to the calibrator. 2. Using the reading of your RTD, static, and differential pressures make sure the flow computer has the correct reading. If not, adjust the flow computer as necessary. 11. Remote Operation 11.1 Remote Interface 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. NOTE: To use the remote control option a custom RS-232 cable must be purchased from ecom (LEM232). 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. Typical RS-232 remote configurations are shown in Figure 3. Figure 13. Calibrator-to-Computer Connection...

  • Page 22: Setting Up The Rs-232 Port For Remote Control

    11.2 Setting up the RS-232 Port for Remote Control Note: The RS-232 connection cable should not exceed 5m unless the load capacitance measured at connection points is less than 2500pF. Serial parameter values: 9600 baud 8 data bits  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 3, use the following procedure: . Start Hyper Terminal (located in Accessories/Communications of the Windows Start menu) 2. Select New Connection. 3. For Name enter CP 400/420. Select the serial port that the calibrator is connected to. 4. Enter the above information for port settings. 5. Select ASCII setup from File/Properties/Settings and mark these choices: Echo typed characters locally Wrap lines that exceed terminal width 6. Select Ok 7. To see if the port works enter *IDN?. This command will return information on the calibrator. 11.3 Changing Between Remote and Local Operation There are three modes of operation of the calibrator, Local, Remote, and Remote with Lockout. Local mode is the default mode. Commands may be entered using the keypad on the calibrator or using a computer. In Remote mode the keypad is disabled, and commands may only be entered using a computer, but choosing [GO TO LOCAL] from the menu on the calibrator display will restore keypad operation. In Remote with Lockout, the keypad can not be used at all. To switch modes proceed as follows:...
  • Page 23 Common Commands Standard commands used by most devices. These commands always begin with an “*”. For example: *IDN? tells the calibrator to return its identification. Query Commands Commands that ask for information, they always end with a “?”. For example: FUNC? Returns the current modes of the calibrator displays. Compound Commands Commands that contain more than one command on one line. For example; RTD_TYPE PT385_00;RTD_TYPE? Sets the calibrator to RTD type PT385_00 and queries it to verify. It will return: PT385_00 11.4.2 Character Processing The data entered into the calibrator is processed as follows: - ASCII characters are discarded if their decimal equivalent is less than 32 (space), except 0 (LF) and 3 (CR): - Data is taken as 7-bit ASCII - The most significant data bit is ignored. - Upper or lower case is acceptable. 11.4.3 Response Data Types The data returned by the calibrator can be divided into four types: Integer For most computers and controllers they are decimal numbers ranging from -32768 to 32768. For example: FAULT? could return 0 Refer to the Error Codes table (Table 8) for more information on error codes.

  • Page 24: Remote Commands And Error Codes

    11.4.4 Calibrator Status Error Queue If an error occurs due to invalid input or buffer overflow, its error code is sent to the error queue. The error code can be read from the queue with the command FAULT?. The error queue holds 5 error codes. When it is empty, FAULT? returns 0. The error queue is cleared when power is reset or when the clear command *CLS is entered. Input Buffer Calibrator stores all received data in the input buffer. The buffer holds 250 characters. The characters are processed on a first in, first out basis. 11.5 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 number, and firmware revision level of the Calibrator *RST Resets the calibrator to the power up state Table 6: Calibrator Commands Command Description CPRT_COEFA Sets the custom RTD coefficient A CPRT_COEFA? Returns the custom RTD coefficient A...
  • Page 25 FUNC Sets the display mode as specified in the command FUNC? Returns the current mode of the upper, middle, and lower display HI_ERR Sets the 00% of span limit for percent error mode HI_ERR? Returns the 00% of span limit for percent error mode LOCAL Returns user to manual operation of the calibrator 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 OHMS? Returns ohms value measured from the RTD PRES_UNIT Set the pressure unit for the indicated display PRES_UNIT? Returns the pressure from the indicated display REMOTE Puts the calibrator in remote mode RTD_TYPE Sets the RTD type RTD_TYPE? Returns the RTD type ST_START Starts a switch test ST_OPEN? Returns pressure value at which the switch opened ST_CLOSE? Returns pressure value at which the switch closed ST_DEAD? Returns pressure value of the deadband of the switch TEMP_UNIT Set the RTD to read in °F or °C on the indicated display TEMP_UNIT? Returns the unit the RTD is set to read on the indicated display VAL? Returns the measured values ZERO_MEAS...
  • Page 26 MBAR Pressure in millibars KPAL Pressure in kiloPascals INHG Pressure in inches of mercury at 0°C MMHG Pressure in millimeters of mercury at 0°C KG/CM2 Pressure in kilograms per square-centimeter Turn something on Turn something off UPPER Upper Display MIDDLE Middle Display Lower Lower Display Current measure function DCI_LOOP Current measure function with loop power Voltage measure function Temperature measure function Port P pressure measure function Port P2 pressure measure function P_ST Switch Test with port P pressure measure function P2_ST Switch Test with port P2 pressure measure function Tabelle 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 Entry is above the upper limit of the allowable range Entry is below the lower limit of the allowable range A required command parameter was missing An invalid command parameter was received Pressure not selected...

  • Page 27: Entering Commands

    11.6 Entering Commands Commands for the calibrator may be entered in upper or lower case. There is at least one space required between the command and parameter, all other spaces are optional. Almost all commands for the calibrator are sequential; any overlapped commands will be indicated as such. This section will briefly explain each of the commands and describe their general use, which will include any parameters that may be entered with the command as well as what the output of the command is. 11.6.1 Common Commands *CLS Clears the error queue. Also terminates all pending operations. 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 BETA, 32, 0, .00 11.6.2 Calibrator Commands CPRT_COEFA This command is used for entering a custom RTD into the calibrator. The numeric value entered after the command will be set as the first coefficient of the polynomial used by the custom RTD. For example: CPRT_COEFA 3.908300E-03 enters 3.908300e-3 as coefficient A. CPRT_COEFA? Returns the number that was entered for the first coefficient of the polynomial used in the custom RTD. Using the example above CPRT_COEFA? Would return: 3.908300E-03 CPRT_COEFB This command is used for entering a custom RTD into the calibrator. The numeric value entered after the command will be set as the second coefficient of the polynomial used by the custom RTD. For example: CPRT_COEFB –5.774999E-07 enters –5.774999E-07 as coefficient B. CPRT_COEFB? Returns the number, which was entered for the second coefficient of the polynomial used in the custom RTD. Using the example above, CPRT_COEFB? Would return: -5.774999E-07...
  • Page 28 CPRT_R0 Sets the 0° resistance, R0, in the custom RTD. The value must be entered with a units label. Refer to the Parameter Units table for assistance. For example: CPRT_R0 00 OHM sets R0 to 00 ohms. CPRT_R0? Returns the value for the resistance in custom RTD. The above example would return: .000000E+02, OHM DAMP Turns the dampening function on or off. For example: If you send DAMP ON this will turn the dampening function on. DAMP? Returns the current state of the dampening function. For example: If you send DAMP? It will return ON if the dampening function is on. DISPLAY Turns the indicated display on or off. For example: If you send DISPLAY LOWER, ON this will turn the lower display on. DISPLAY? Returns the current state of the each of the displays. For example: If you send DISPLAY? It will return ON, ON, ON if the all the displays are on. FAULT? Returns the error code number of an error that has occurred. The command may be entered when the previous command did not do what it was meant to do. For example, if a value for current output is entered that is bigger than the supported range (0-24mA) FAULT? Would return: 03 which is the code number for an entry over range. Refer to the Error Codes table for more information on error code numbers. ERROR _LOOP Turns loop power on or off in percent error mode. For example: To set loop power on send ERROR_LOOP ON. ERROR _LOOP? Returns the current state of loop power in percent error mode. For example: If you send ERROR_LOOP? It will return ON if loop power is on in error mode. ERROR_ MODE Turns percent error mode on and off.
  • Page 29 ERROR _ PORT? Returns the current pressure port for percent error mode. For example: If you send ERROR _PORT?, it will return P if the pressure port in percent error is [P]. FUNC Sets the display indicated in argument one to the function indicated in argument 2. For example: To set the lower display to RTD mode send FUNC LOWER,RTD. FUNC? Returns the current mode of all displays. For example if the calibrator is set to [P2] ST on the upper display, [P] on the middle, and RTD on the lower, FUNC? Would return: ST_P2,P,RTD HI_ERR Sets the 00% point for the percent error mode calculation in the current engineering units. For example: To set the 00% point to 00 psi send HI_ERR 00. HI_ERR? Returns the 00% point for the percent error mode calculation. For example: If the 00% point is set to 00 psi, HI_ERR? would return .000000E+02, PSI . LOCAL Restores the calibrator to local operation if it was in remote mode. Also clears LOCKOUT if the calibrator was in lockout mode. LOCKOUT Sending this command sets the lockout state, when the unit is in REMOTE or goes to remote it prohibits use of the keypad completely. The lockout state can only be cleared by sending the LOCAL command. LO_ERR Sets the 0% point for the percent error mode calculation in the current engineering units. For example: To set the 0% point to 20 psi send LO_ERR 20. 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+0, PSI . OHMS? Returns the raw Ohm value from the RTD.
  • Page 30 REMOTE Puts the calibrator in remote mode. From the remote mode the user can still use the keypad to get back to local unless the command LOCKOUT was entered before REMOTE. Than the keypad is totally locked out, and the user has to send the LOCAL command to get back to local operation. RTD_TYPE Sets the RTD type. The following is a list of RTD types the way they should be entered after the command: PT385_00; PT392_00; PTJIS_00; CUSTOM; For Example: RTD_TYPE PT385_00 sets RTD type to Pt385-00 RTD_TYPE? Returns the RTD type. For Example: If the RTD type is PT385_00, RTD_TYPE? Will return PT00_385. ST_START Starts a switch test. ST_CLOSE? Returns the pressure that the switch closed at in the current pressure units. 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. TEMP_UNIT This command is used to the temperature unit used when measuring temperature. The first argument indicates which display to apply the change to. The second argument is the unit, either CEL for Celsius or FAR for fahrenheit. For example: To set the temperature unit to fahrenheit on the lower display send TEMP_UNIT LOWER, FAR. TEMP_UNIT? Returns the temperature unit, (CEL or FAR) used when measuring RTDs for each of the 3 displays. 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 0V, then VAL? will return: 5.000000E-03, A, .000000E+0, V ZERO_MEAS Zeroes the attached pressure module. Enter the zeroing value in PSI after the command when zeroing an absolute pressure module. ZERO_MEAS? Returns the zero offset or the reference value for absolute pressure modules.

  • Page 31: Specifications

    12. Specifications (18 °C to 28 °C unless otherwise noted.) General Instrument Setup Recall 5; last used on power-up Environmental Operating Temperature -0 °C bis + 50 °C Storage Temperature -20 °C bis + 60 °C Power Requirements 6,0 VDC Battery Four (4) standard AA cells Battery > 35 hours, typical usage Physical Dimensions 8,3" H x 3,9" B x ,8" T (2,082 x 9,906 x 4,572 cm) Weight  lb. 4 oz. (0,567 kg) Connectors / Ports Pressure - two, /8" NPT BetaPort-P pressure module; Included Accessories Soft case, batteries, manual, NIST-traceable certificate and test leads Ranges Available Pressure (select any two) 5 psi, 5, psi, 30, psi, 00 psi, 300 psi, 500 psi, 000 psi, 3000 psi, 5000 psi, 0,000 psi 0 bis 24.000 mA Volts 0 bis 30.000 VDC -40°C to 05°C (-40°F to 220°F) Engineering Units...

  • Page 32: Warranty

    13. Warranty and liability Under the general terms and conditions of business, ecom instruments GmbH offers a 2-year warranty for function and materials on this product under the specified operating and maintenance conditions. Not covered are all wearing parts (e.g. batteries, sensors, displays, lamps, etc.) as well as calibrations. This warranty does not extend to products that have been used improperly, altered, neglected, dama- ged by accident or subjected to abnormal operating conditions or improper handling. In the event of a warranty claim, the faulty device should be sent in. We reserve the right to readjust, repair or replace the unit. The above warranty terms represent the sole rights of the purchaser to compensation and apply exclu- sively and in place of all other contractual or statutory warranty obligations. ecom instruments GmbH does not accept liability for specific, direct, indirect, incidental or consequential damages or losses, including the loss of data, regardless of whether they are caused by breach of warranty, lawful or unlawful actions, actions in good faith or other actions. If in certain countries the restriction of statutory warranty and the exclusion or restriction of incidental or consequential damages is unlawful, then it may be possible that the above restrictions and exclusi- ons do not apply for all purchasers. If any clause in these warranty terms should be found to be invalid or unenforceable by a competent court, then such a judgement shall not affect the validity or enforcea- bility of any other clause contained in these warranty terms. 14. Maintenance 14.1 Replacing Batteries Replace batteries as soon as the battery indicator turns on to avoid false measurements. If the batteries discharge too deeply the CP 400/420 will automatically shut down to avoid battery leakage. Note: Use only AA size alkaline batteries or optional rechargeable battery pack. 14.2 Cleaning the Unit Warning: To avoid personal injury or damage to the calibrator, use only the specified replacement parts and do not allow water into the case. Caution: To avoid damaging the plastic lens and case, do not use solvents or abrasive cleansers. Clean the calibrator with a soft cloth dampened with water or water and mild soap.

  • Page 33: Menu Map

    15. Menu Map...
  • Page 34 GmbH Industriestr.2 97959 Assamstadt / Germany Tel.: +49 (0) 62 94 / 42 24-0 Fax: +49 (0) 62 94 / 42 24-90 E-Mail: sales@ecom-ex.com Internet: www.ecom-ex.com...

This manual is also suitable for:

Cp 420

Table of Contents