Martel BETAGAUGE 330 User manual

BETAGAUGE 330
Reference Manual

BETAGauge 330
Reference Manual
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.1 Contacting Martel / Beta . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.2 Standard Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.3 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
2. Calibrator Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.1 Calibrator Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.2 Using the Backlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.3 Using the Zero Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.4 Other Menu Controlled Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3. Initial Setup and Basic Pressure Generation . . . . . . . . . . . . . . . . . .12
4. Measuring Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4.1 Media Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4.2 Measuring Pressure with External Modules . . . . . . . . . . . . . . . . . . . . .14
5. Measuring Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
6. Measuring Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
7. Measuring Temperature with an RTD . . . . . . . . . . . . . . . . . . . . . . .17
8. Performing 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 Between Remote and Local Operation . . . . . . . . . . . . . . . .28
13.4 Using Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
13.5 Remote Commands and Error Codes . . . . . . . . . . . . . . . . . . . . . . . .31
13.6 Entering Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
14. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
15. Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
16. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
16.1 Replacing Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
16.2 Cleaning the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
16.3 Valve Cleaning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
16.4 Service Center Calibration or Repair . . . . . . . . . . . . . . . . . . . . . . . . .44

1. Introduction
The BetaGauge 330 is designed to be a simple to use yet very versatile pressure
calibrator. Its internal pressure sensor combined with an innovative electrically powered
pump along with inputs for mA, voltage, switch contacts and an RTD probe allow the 330
to calibrate virtually any pressure device. The model 330-300 uses a manual pump to
reach higher pressures up to 300 psi. An external pressure module option allows an even
wider range of pressure calibration options including absolute and differential.
1.1 Customer Service Corporate Office:
www.martelcorp.com
e-mail: [email protected]
Tel: [phone] Fax: [phone]
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
certificate with data.
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
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Symbol Description
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.
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• 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.
• 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 equipment under test:
• Use the proper jacks, function, and range for your measurement or sourcing application.

2. Calibrator Interface
Figure 1 shows the location of the pressure controls, connection port and electrical
inputs.
Figure 1
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Figures 2A and 2B show the location of the keys. Table 2 describes the function of each key.
Figure 2A
Keypad (Electric Pump Versions)
Table 2 Key Functions
No. Name Description
1 Function Keys These are soft keys used to configure the calibrator
2 ON/OFF Key This key is used to turn the calibrator on and off
3 ZERO Key This key is used to zero pressure measurements
4 Arrow Keys Used to control mA source/sim. and to set pump and %
error limits
5 Home Key Return to main menu screen
6 Pump 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 minutes warm-up to rated accuracy.
Large changes in ambient temperature may require a longer warm-up period. See
section 2.3 for instructions on zeroing the pressure sensor displays. Pressure ranges
should be zeroed each time the calibrator is started.
Figure 2B
Keypad (Manual Pump Version)
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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
Table 3 Display Functions
No. Name Description
1 Primary Parameters Indicates what is being measured.
2 Span Indicator Indicates the percent of the 4 to 20 mA span. (For mA and
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.
2.1.1.2 Using the Active Display Option
The active display is indicated by the center option on the Top Level Menu. It is used to
select the display to which the ZERO key will apply.
2.1.1.3 Using the LIGHT OPTION
The backlight can be toggled on and off using this key.
2.1.2 Main Menu Functionality
There are three options on the Menu, CONFIG, {Active Display} and MORE. The Main
Menu is home for the menu display.

2.1.2.1 Setting the Active Display
The active display is indicated by the center option on the Main Menu, pressing the F2
key will toggle the active display.
2.1.2.2 Setting Active Display Parameters
To set the parameters of the active 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 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 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 Lower Display.
mA measure = Milliamps measure without loop power.
mA w/24V = Milliamps measure with loop power.
mA source = Milliamps source.
mA sim = Milliamps simulate using an external supply from the UUT.
VOLTS = Voltage Measure.
RTD = RTD Temperature Measurement (if a probe is connected).
The following table shows which functions are available concurrently.
An X in a column indicates that the mode in the active display will not be available for
selection if the mode in that row is in use in any other display.
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Table 4 Mode Concurrency
CURRENT DISPLAY
P[1] [EXT] P[1] [EXT] mA mA Volts RTD
ST ST Loop
P[1]
[EXT]
P[1]ST X X X X X
[EXT]ST X X X X X
mA X X X X
mA Loop X X X X
Volts X X X X
RTD
X = Not a valid mode
2.1.1.3 Accessing Other Menus
Use the MORE option on the Main Menu to access the other menu functions.
2.2 Using the Backlight
The backlight is controlled by the LIGHT softkey on the main menu on the models with
electric pump. The 330-300 psi has a 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. There are no user configuration settings for the backlight.
2.3 Using the Zero Function
When the ZERO KEY is pressed, the calibrator will zero the active display 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 pressed
the calibrator subtracts the current reading from the output. 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.
2.3.2 Absolute Pressure
When an absolute pressure range is selected on the active 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). The sensor port should be open (vented)
to atmosphere while performing this procedure.
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OTHER DISPLAYS

2.4 Other Menu Controlled Functions
There are 12 ‘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 Figure 4 for a
detailed mapping of the menu structure.
A note on naming convention:
If a ‘sub-main’ menu has subordinate menus, it will henceforth be referred to as
{function} Main Menu. E.g. the display contrast sub-main menu will be called the
Contrast Main Menu. If not it will be called the {function} menu.
2.4.1 Setting the Contrast
From the Contrast Main Menu choose the CONTRAST option to access 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 the Main Menu indicates that it is locked. Also all menus are locked out with
the exception of the Min Max Menu, 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.
9

10 Figure 4
Menu Map

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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.
Use the F2, F3 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 {display} 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

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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 P100-385, P100-392, P100-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 PT100-385.
2.4.7 Damping
Damping can be turned ON or OFF using the Damping menu selection. When damping
is ON, the calibrator displays an running average reading of ten measurements. The
calibrator makes approximately 3 readings per second.
2.4.8 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 adding an external resistor.
Note: When the HART resistor is on the maximum load driving capacity is 750 ohms.
3. Initial Setup and Basic Pressure Generation
1. The BetaGauge 330 is supplied with a special low volume calibration hose kit to
facilitate faster pumping to pressure and quick pressure stabilization. the kit also
comes with the required “quick-fit” hose connectors and a BSP adapter for non-NPT
applications. It is highly recommended that this type of hose is used to achieve the
best performance of the product. Once the fittings are installed and the calibrator is
connected to the unit under test (UUT) the calibrator is ready for use. Figure 5 shows a
typical setup.

13
2. Before generating pressure make sure you have the 330 configured for your
application. If needed review section 2 of the manual again to select the proper
configuration.
3. Make sure that the pressure vacuum knob is set for the function you want to perform
(+ for pressure and – for vacuum).
4. Close the vent knob.
5. Press the pump key (or manually stroke the pump on the 300psi/20 bar model) and
watch the pressure (or vacuum) increase until you reach the desired pressure.
Note:On the electric pump version the motor speed will start slowly when
pressure is low (<15psi) to allow better control at low pressures.
6. Use the fine adjustment vernier to fine tune the pressure/vacuum reading as needed.
7. To reduce or bleed off the pressure entirely slowly rotate the vent knob to the open
position. Doing this step carefully will allow you to control the 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 generation limit of 160psi there may be atmospheric conditions where it
cannot achieve the full scale pressure of 150psi. High altitude use (about 3000 ft or 1000
meters) or use at cold temperatures may limit the pump to about 135psi (9 Bar). In these
cases the vernier adjustment can be used to generate the additional pressure needed if
full scale pressure must be generated.
In these situations the user should begin the calibration with the vernier in the full counter
clockwise position and then when the electric pump reaches its limit turn the vernier in
the clockwise direction to raise the pressure and to set the desired reading.
Figure 5

4. 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 one internal
sensors and many optional external sensors (EPMs) are available. Be sure to choose the
sensor based on working pressures and accuracy.
Note:
Pressure sensors may be damaged and/or personnel injury may occur due to improper
application of pressure. Please refer to the table of ranges and resolutions at the back of
this manual for information on overpressure and burst pressure ratings. Vacuum should
not be applied to any gauge pressure sensor. The calibrator display will indicate “OL”
when an inappropriate pressure is applied. If “OL” is observed on any pressure display,
the pressure should be reduced or vented immediately to prevent damage or possible
personnel injury. “OL” is displayed when the pressure exceeds 110% of the nominal range
of the sensor or when a vacuum in excess of 2 PSI is applied on gauge 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 device is calibrated. See section 2.3.
4.1 Media Compatibility
The BetaGauge 330 feature a unique user accessible valve cleaning port to facilitate
servicing the pump. Section 16.3 shows how to clean these valves. Even though
servicing the pump is easy, care should be taken to only expose the calibrator to clean,
dry gases.
4.2 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.
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Figure 6
5. Measuring and Generating Current (4 to 20 mA)
1. To measure current use the input terminals in the front of the calibrator. Select the mA
function on the lower display. Current is measured in mA and percentage of range.
The range on the calibrator is set to 0% at 4 mA and 100% at 20 mA.
For example:
If the current measured is displayed as 75% then the mA value is 16 mA.
Note: The display will indicate “OL” when the measured current exceeds the nominal
range of current measurement (24 milliAmps).
2. To source current 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 arrow keys will start the output mode and allow you to use the
arrow keys to adjust the mA output. The function keys can also be used to step the
output in either 25% steps (4, 8, 12, 16, 20 mA) or 0% (4 mA) and 100% (20 mA).
5. While in the mA output mode if the loop is opened or the compliance is exceeded the
unit will flash “OL” .

Figure 7-1
Figure 7-2
Figure 7-3
Figure 7-4
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6. 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.
Note: The display will indicate “OL” when the measured voltage exceeds the nominal
range of voltage measurement (30 V).
Figure 8
7. Measuring Temperature with an 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, 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: The display will indicate “OL” when the measured temperature is outside the
nominal measurement range of the RTD function (below -40°C or above 150°C).
If a custom probe is being used, the entering of R0 and coefficients is handled through
the serial interface (see section 13).
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Figure 9
8. Performing a Pressure Switch Test
Figure 10
To perform a switch test, follow these steps:
1. Change the setup to Setup 4 (default switch test).
Setup 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.