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Martel BETAGAUGE 330, Reference Manual

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21

9.2 Calibrating a Pressure-to-Current Transmitter

To calibrate a pressure-to-current transmitter (P/I), perform the following steps:

1.

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.  

Figure 11.

Summary of Contents for BETAGAUGE 330

Page 1: ...BETAGAUGE 330 Reference Manual ...

Page 2: ...ming a Pressure Switch Test 18 9 Calibrating Transmitters 20 9 1 Using the mA Input Function 20 9 2 Calibrating a Pressure to Current Transmitter 21 9 3 Percent Error Function 22 10 Minimum and Maximum Storage Capability 24 11 Factory Setups 25 12 Custody Transfer Flow Calibration 26 13 Remote Operation 26 13 1 Remote Interface 26 13 2 Setting up the RS 232 Port for Remote Control 27 13 3 Changing...

Page 3: ...rential 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 BetaGauge 330 Calibrator instruction manual test leads calibration hose kit with fittings carrying case calibration certi...

Page 4: ... 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 t...

Page 5: ...ct 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 Caution To avoid possible damage to calibrator or to equipmen...

Page 6: ...2 Calibrator Interface Figure 1 shows the location of the pressure controls connection port and electrical inputs Figure 1 4 ...

Page 7: ...mp Key Push to run pump Electric pump version 6 Backlight Figure 2B only for manual pump version Note When the calibrator is turned on by pressing the ON OFF key it will go through a short startup self check routine During that routine the display shows the current firmware revision level auto shutdown status and the range of the internal pressure sensor The calibrator requires a maximum of 5 minu...

Page 8: ...nd mA Loop functions only 3 Pressure Units Indicates one of 15 pressure units available for display 4 Units Indicates the unit of measure for the display 2 1 1 Top Level Menu Functionality There are three options for this menu MENU Active Display and LIGHT The Top Level Menu is home for the menu display 2 1 1 1 Using the MENU Option The MENU option is the gateway to the rest of the menu system 2 1...

Page 9: ... and Pressure modes have a second parameter RTDs can be read in Celsius or Fahrenheit and Pressures can be read in 11 engineering units With a single display the following modes are available P 1 Pressure internal sensor EXT Pressure with external pressure module P 1 ST Switch Test with left side sensor EXT ST Switch Test with external pressure module Note mA functions are only available on the Lo...

Page 10: ...play if a pressure mode is selected and the pressure is within the zero limit The zero limits are within 10 of the full scale range of the selected sensor If the display indicates OL the zero function will not operate Note The ZERO KEY is only used for pressure 2 3 1 Internal Sensor and Pressure Module non absolute When a sensor or module is selected on the active display and the ZERO KEY is press...

Page 11: ...the Contrast Adjustment Menu Use the F2 F3 keys to adjust the display contrast to the desired level and then use the CONTRAST DONE option to return home 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 t...

Page 12: ...10 Figure 4 Menu Map ...

Page 13: ... 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 display opt...

Page 14: ...Pump Limits To prevent overpressure of sensitive devices the maximum pressure pump limit can be set When in this mode use the arrow keys to set the maximum pressure 2 4 9 HART Resistor An internal 250 ohm HART Resistor can be enabled when the BetaGauge 330 is operated in the mA Measure 24V mode This allows a HART Communicator to be connected across the mA terminals and eliminates the need for addi...

Page 15: ...he pressure bleed rate to a high degree and will facilitate taking down scale pressure readings 3 1 Electric Pump Considerations The BetaGauge 330 30 and 330 150 incorporate a small lightweight battery powered pneumatic pump that allows the user in the case of the 330 150 to build relatively high pressure up to 150psi 10Bar quickly and with good control Because the pump has an upper pressure gener...

Page 16: ...range sensors Use the ZERO key to zero the pressure sensor when vented to atmospheric pressure Important NOTE To protect sensor integrity and prevent damage to the sensor the calibrator will display OL overload when the applied pressure exceeds 110 of the full scale calibrated range of the sensor Important NOTE To ensure accuracy of the calibrator it is critical to zero the calibrator before a dev...

Page 17: ...urrent the same connections are used From the configuration screen select mA source or mA Sim 2W 3 Note that this function can only be done on the LOWER screen Also in the source mode the calibrator will generate 0 to 24 mA using its own internal 24 volt supply whereas in the simulate mode the calibrator acts as a 2 wire transmitter and requires an external 24 volt supply 4 Pressing any of the arr...

Page 18: ...Figure 7 1 Figure 7 2 Figure 7 3 Figure 7 4 16 ...

Page 19: ...s selected There are 4 probe types supported P100 385 P100 392 P100 JIS and CUSTOM The standard probe has a 10 insertion depth with a 1 4 diameter stainless steel sheath Note The factory default type is PT100 385 so if the 330 is being used with the Martel Model LPT100A probe you do not have to set the probe type Simply plug the probe into the 330 and configure the display to read temperature Note...

Page 20: ...etup 4 The upper display is set to P1 ST all other displays are off Important NOTE The pressure Switch Test can be performed with the following functions P1 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 ...

Page 21: ... 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 a...

Page 22: ...ly open switch the display will just read OPEN instead of CLOSE 9 Calibrating Transmitters 9 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 1 Passively Where the device under test directly generates 4 20 mA and can be read by the calibrator 2 Actively Where the calibrator suppl...

Page 23: ...e to current transmitter P I perform the following steps 1 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 Figure 11 ...

Page 24: ... 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 1 With the calibrator turned on and operating press the F3 key to acti...

Page 25: ...toggle through the UNIT options and select NEXT to move on 6 Use the arrow keys to set the 100 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 23 ...

Page 26: ...rs have a min max feature for capturing the minimum and maximum values of any displayed parameter The min max function can be accessed by stepping through the menu options until min max is shown on the display above the F1 key At this time pressing the F1 key will toggle the display through the min max values that are stored in the min max registers These readings are live so that the new min max ...

Page 27: ...ote Any of these setups can be changed and saved by the user Setup 1 The upper display is set to P1 mode and the lower is set to mA middle is off Setup 2 The upper display is set to P1 mode and the lower is set to RTD middle is off Setup 3 The upper display is set to P1 mode and the middle is set to RTD lower is mA ...

Page 28: ...ferential pressures P1 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 13 Remote Operation 13 1 Remote Interface The calibrator can be remotely controlled using a PC terminal or by a computer program running the calibrator in an automa...

Page 29: ...orts a USB to RS 232 converter will be needed These can be obtained from most office supply and computer stores To connect the calibrator to the computer attach the LEMO connector end of the cable to the pressure module port on the right side of the calibrator and the DB 9 connector to the RS 232 port on the computer The calibrator should be turned off prior to making the connection and then turne...

Page 30: ...al command REMOTE at the computer terminal 2 To enable Remote with Lockout type in REMOTE LOCKOUT in either order 3 To switch back to local operation enter LOCAL at the terminal This command also turns off LOCKOUT if it was on For more information on commands refer to the Remote Commands section 13 4 Using Commands 13 4 1 Command types Refer to the Section 10 5 on Remote Commands for all available...

Page 31: ...gnored Upper or lower case is acceptable 13 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 110 Refer to the Error Codes table Table 8 for more information on error codes Floating Floating numbers have up to 15 significant figures...

Page 32: ...e read from the queue with the command FAULT The error queue holds 15 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 ...

Page 33: ...R0 Returns the custom RTD R0 resistance DAMP Turns Damp on or off DAMP Returns if DAMP is on off DISPLAY Turns on off the displays specified in the command DISPLAY Returns which displays are on off ERROR_LOOP Turns loop power on or off in percent error mode ERROR_LOOP Returns the current state of loop power in error mode ERROR_MODE Turns percent error mode on or off ERROR_MODE Returns whether perc...

Page 34: ...MIT Returns the approximate value at which the pump will turn off REMOTE Puts the calibrator in remote mode RTD_TYPE Sets the RTD type RTD_TYPE Returns the RTD type SIM Set the calibrator to simulate the requested current SIM Returns the value of the current being simulated ST_CLOSE Returns pressure value at which the switch closed ST_DEAD Returns pressure value of the deadband of the switch ST_OP...

Page 35: ...UPPER Designates Upper display V Voltage Table 8 Error Codes Error Number Error Description 100 A non numeric entry was received where it should be a numeric entry 101 Too many digits entered 102 Invalid units or parameter value received 103 Entry is above the upper limit of the allowable range 104 Entry is below the lower limit of the allowable range 105 A required command parameter was missing 1...

Page 36: ... will return BETA 330 0 1 00 13 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...

Page 37: ...he value must be entered with a units label Refer to the Parameter Units table for assistance For example CPRT_R0 100 OHM sets R0 to 100 ohms CPRT_R0 Returns the value for the resistance in custom RTD The above example would return 1 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 ...

Page 38: ... 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 For example To turn on percent error mode send ERROR_MODE ON ERROR _ MODE Returns the current state of percent error mo...

Page 39: ...t resistor off HART Returns the state of the Hart resistor For example If the Hart resistor was on HART Would return ON HI_ERR Sets the 100 point for the percent error mode calculation in the current engineering units For example To set the 100 point to 100 psi send HI_ERR 100 HI_ERR Returns the 100 point for the percent error mode calculation For example If the 100 point is set to 100 psi HI_ERR ...

Page 40: ...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...

Page 41: ...turns the pressure unit used when measuring pressure for each of the 3 displays PUMP_LIMIT Sets the approximate pressure in psi at which the pump will turn off For example PUMP_LIMIT 50 sets the approximate value that the pump will shutoff at to 50 psi PUMP_LIMIT Returns the pump limit Using the above example PUMP_LIMIT Would return 50 000 REMOTE Puts the calibrator in remote mode From the remote ...

Page 42: ...tion With the example above the output would be 5 000000E 03 A 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 set the temperature unit used whe...

Page 43: ...wer display For example if the upper display is measuring 5mA and the lower display is measuring 10V then VAL will return 5 000000E 03 A 1 000000E 01 V 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 41 ...

Page 44: ...case batteries manual NIST traceable certificate test leads and hose kit Ranges 12 to 30 000 psi psia 12 to 150 00 psi psia 12 to 300 00 psi mA 0 to 24 000 mA Volts 0 to 30 000 VDC RTD 40 0 C to 105 0 C 40 0 F to 220 0 F Engineering Units psi bar mbar kPa MPa kgcm2 mmH2O 4 C mmH2O 20 C cmH2O 4 C cmH2O 20 C inH2O 4 C inH2O 20 C inH2O 60 F mmHg 0 C inHg 0 C Accuracy Pressure All Ranges 6 months 025 ...

Page 45: ...es or optional rechargeable NiMh cells 16 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 16 3 Valve Cleaning Pro...

Page 46: ...n caps and gently tighten each cap 10 Seal the output port and operate the pump to at least 50 of capacity 11 Release the pressure and repeat several times to ensure that the o rings seat properly 16 4 Service Center Calibration or Repair Only qualified service personnel should perform calibration repairs or servicing not covered in this manual If the calibrator fails check the batteries first and...

Page 47: ...10546 3 21093 cmH2O 20 C 70 4336 2113 0 10565 0 21130 mmH2O 4 C 703 089 21093 N A N A mmH2O 20 C 704 336 21130 N A N A inH2O 4 C 27 68067 830 42 4152 1 8304 2 inH2O 20 C 27 72977 831 89 4159 5 8318 9 inH2O 60 F 27 70759 831 23 4156 1 8312 3 mmHg 0 C 51 71508 1551 5 7757 3 15515 inHg 0 C 2 03602 61 081 305 40 610 81 Proof pressure maximum allowable pressure without a shift in calibration Burst pres...

Page 48: ...8 10 Rev E 0219782 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 ...

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