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DISTRIBUTION AND RESTRICTED DISCLOSURE
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Trademarks
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are trademarks or service marks of their respective
manufacturers. Company names used herein are
trademarks or trade names of their respective
companies or organizations.
ii
Page 3
Table of Contents
Table of Contents .............................................. iii
About this Guide......................................................xi
The BetaGauge II™ Pressure Calibrator is the most
advanced and accurate handheld pressure calibrator
available. This calibrator was engineered to perform in
any industrial environment and is equipped with
everything you need for maintaining your pressure
instruments to your manufacturer’s specifications.
About this Guide
This guide provides complete information on the proper
use and operation of the BetaGauge II. A brief
description of each section follows:
Section 1 provides general information regarding the
BetaGauge II, as well as a description of the keyboard
and menu. In addition, it provides information on
standard and optional equipment.
Section 2 describes the two types of input modules
available for the BetaGauge II. It also explains how to
install and remove modules and how to connect field
devices to both module types.
Section 3 explains how to perform basic BetaGauge II
operations, such as specifying pre-programmed display
units, zeroing displayed values, and programming trip
detection.
Section 4 explains how to set user preferences, such as
viewing and programming owner and calibrator
information, turning the keypad beep on and off, and
setting LCD preferences.
Section 5 explains how to set up user-defined display
modes for both electrical and pressure units.
Section 6 explains how to perform the possible
calibration tests using the BetaGauge II.
xi
Page 13
Section 7 explains how to use the BetaGauge II with
third party software to provide automated computer
aided calibration.
Appendix A provides the dangers, warnings, and
cautions for using battery packs and explains other
battery related information.
Appendix B lists the detailed specifications for the
BetaGauge II.
Appendix C lists the pressure conversion factors for
converting pounds per square inch (PSI) to other
pressure units.
Appendix D describes the necessary service required
for the BetaGauge II. In addition, it explains how to
contact the factory for technical support and how to
arrange for any needed servicing. This section also
includes the Limited Warranty statement.
xii
Page 14
Comments
Martel Electronics Corporation is interested in your
response to our products and to this guide. If you have
any comments or suggestions, you may contact us as
follows:
Please tell us how to contact you if we have any
questions or follow-up to your inquiry.
Factory Sales
To purchase optional items or additional modules for
the BetaGauge II, please contact us at the numbers
above.
You can also visit our web site to view our other
calibration products, download product information and
find out how to return calibrators for annual
recertification.
See us at www.martelcalibrators.com.
xiii
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xiv
Page 16
1-General Description
Overview
The BetaGauge II pressure calibrator is the most
advanced and accurate handheld pressure calibrator
available today. Its 3½ inch diagonal liquid crystal
display (LCD), membrane keypad, and user-prompt
programming make the BetaGauge II easy to operate.
An illustration is shown below:
Figure 1-1 BetaGauge II
1-1General Description
Page 17
Carrying Case
The BetaGauge II comes with a two-section padded
vinyl carrying case. It is recommended that you use the
case at all times to protect the calibrator from damage
due to chemicals, dust, and dirt. The carrying case is
described below:
Front Section. The calibrator is secured in the front
section of the case with an elastic strap that fits between
the keypad and the display.
Back Section. The back section of the case provides
space for carrying three modules, this user guide, and
communications cables. There is also space for fittings
or other connectors, if needed.
Bottom Flap. A flap at the bottom of the case is
secured with Velcro™. You can loosen the flap to
install and use modules while the calibrator is in the
case. Keep the flap closed when the calibrator is not in
use to keep foreign material out of the module bays.
Front Flap. The flap at the front of the case has a
pouch for holding the calibrator test leads.
Carrying Strap. The carrying strap on the case may be
adjusted for comfort as a shoulder strap (or you can
remove the strap). It can also be used to hang the
calibrator for use in the field.
General Description1-2
Page 18
Standard Equipment
The BetaGauge II is supplied with the following
standard equipment:
One pressure calibrator hand held (HHU) unit
One standard voltage/current DC input module
One battery pack (nickel-cadmium, rechargeable)
One set of test leads
One battery charger
One vinyl carrying case
One 9-pin D shell to 9-pin D shell serial cable
Optional Equipment
The BetaGauge II is available with any of the following
options:
The BetaGauge II liquid crystal display is divided into
four sections. These sections are described below in the
order that they appear on the display from top to
bottom. Refer to the illustration below:
Figure 1-2 BetaGauge II LCD
Time/Date/Battery Indicator. The calibrator’s
current time and date appears to the left of this
section and the approximate battery voltage
indicator appears to the right.
Channel 1 Input Information. This section
displays the current Channel 1 input reading in
pressure units, Volts, or milliamps.
Channel 2 Input Information. This section
displays the current Channel 2 reading in pressure
units, Volts, or milliamps.
Display Screen. This section shows the current
menu, the current menu items associated with the
four function keys (F1 through F4), and other
displays depending on the current function you are
performing.
General Description1-4
Page 20
Keypad Description
The keypad on the BetaGauge II allows you to enter
data, scroll through the menus, and select menu items.
A sample keypad is shown below:
Figure 1-3 BetaGauge II Keypad
The BetaGauge II keypad consists of the following key
groups:
Channel keys
Function keys
Number keys
Special keys
Each of the key groups are described on the following
pages.
1-5General Description
Page 21
Channel Keys
The channel keys (CH1 and CH2), in the upper left and
right corners of the keypad, allow you to select Channel
1 or Channel 2 for performing specific configuration or
modification functions, such as damping or zeroing a
module. Channel 1 data appears in the top half of the
LCD display; Channel 2 data appears in the bottom
half.
Function Keys
The function keys (F1 through F4), across the top of the
keypad, allow you to select specific menu items. These
menu items appear across the bottom row of the LCD.
You can select menu items by pressing the function key
directly beneath the selection you want to make. The
function of each key changes depending upon the menu
currently displayed.
Number Keys
The number keys (0 through 9, +/-, and .), in the left
portion of the keypad, allow you to enter values for
various entry screens.
General Description1-6
Page 22
Special Keys
The special keys, in the right portion of the keypad,
allow you to perform specific BetaGauge II operations.
These special keys are described below:
KeyAllows you to …
MENUScroll forward through the menu items
under the Setup menu and the
Calibration menu.
ON/OFFTurn the BetaGauge II on and off.
ZEROSet any displayed value to zero.
(Starburst)Toggle a display backlight on and off
as needed. Refer to Section 4 for
information on how to set the time
delay for the backlight shut off.
CLRExit the current display screen and
return to the previous menu.
BATRead the exact battery voltage.
(Up/Down
Arrows)
Scroll through alphanumerical
characters for data entry purposes.
ENTERAccept keypad entries.
1-7General Description
Page 23
Menus
The BetaGauge II Calibrator has two main menus:
Setup menu
Calib menu
See the BetaGauge II menu structure below:
BetaGauge II Main Menu Structure
Top
Level
Setup Menu
1
Trip
Unit
Damp0.0s2.0s5.0s10.0s
1
V/mA
Sys(MasterCAL IMMS (SYS) Mode)
Owner
BeepDis.Enab
LCDLED
ContrastLightDark
OffDis.EnabSet
Mod
Sub Menus (Shaded)
Program Selections (not shaded)
Dis.EnabReset
CH1CH2
timeSecMinHrs
DateDayMonthYear
Format
ModeP/II/POther
User
%FncP/II/POther
dmymdyymd12/24Hr
Calibrate Menu
Main
InfoPrtyVer.
1
Only Available on the DC Input Module.
General Description1-8
Page 24
Setup Menu
The Setup menu contains the following menu items:
Menu
Item
Trip
Allows you to …
Detect trips from either wet or dry contacts
using an installed DC module. Refer to
Section 3 for more information.
UnitSelect the desired pressure units for display
when using a BetaPort–P pressure module.
Refer to Sections 3, 4, and 5 for more
information.
DampSelect the damping factor for fluctuating
inputs. Refer to Section 3 for more
information.
V/mASelect voltage or milliamp measurements
when using a BetaPort–DC module.
SysAccess the BetaGauge II’s Documenting
Calibrator (SYS) Mode. Refer to Section 7
for more information.
OwnerView the owner identification, the serial
number of the calibrator, and the last factory
acceptance date of the calibrator. Refer to
Section 4 for more information.
BeepEnable or disable the keypad beep. Refer to
Section 4 for more information.
LCDEnable or disable the backlight off timeout
mechanism and change the LCD contrast.
Refer to Section 4 for more information.
OffEnable or disable the auto shut off
mechanism and set the auto shut off period.
Refer to Section 4 for more information.
1-9General Description
Page 25
Menu
Item
Allows you to …
ModView module specific information such as
serial number, range, and last calibration
date. Refer to Section 3 for more
information.
TimeSet the time. Refer to Section 4 for more
information.
DateSet the date. Refer to Section 4 for more
information.
FormatSet the format for the time and date. Refer
to Section 4 for more information.
ModeSet up the calibrator for using advanced
display modes such as user-defined pressure
units, percent scale, percent error, etc. Refer
to Section 5 for more information.
UserDefine a unit name for a user-defined unit
and for pressure units, the value with respect
to one psi. Refer to Section 5 for more
information.
%FncSet up the calibrator for advanced display
mode such as user-defined pressure units,
percent scale, percent error, etc. Refer to
Section 5 for more information.
General Description1-10
Page 26
Calib Menu
The Calib Menu contains the following menu items:
Menu
Item
Allows you to …
Main(Reserved for factory use.)
InfoSpecify details on who owns the calibrator and
view the version of firmware currently
installed. Refer to Section 4 for more
information.
Accessing the Menu Items
The menus and menu items appear at the bottom of the
LCD. When you first power up the calibrator, the
bottom of the display appears as shown below:
Setup MenuCH1
Trip Unit Damp V/ma
NOTE: The display automatically defaults to the Setup
menu and shows the first four Setup menu
items.
Procedure
To access the Setup menu and the Calib menu:
1.Make sure the power is on. The first four items on
the Setup menu display automatically.
2.To access the other Setup menu items, continue
pressing the Menu key. When you have viewed all
of the Setup menu items, the Calib menu appears.
3.To return to the Setup menu, press the Menu key
again.
1-11General Description
Page 27
General Description1-12
Page 28
2-Input Modules
Overview
The BetaGauge II is a two-channel, multi-range
instrument. You can change ranges simply by plugging
in new input modules, and you may install or remove
modules even while the unit is powered up. The
calibrator automatically recognizes the module types
and displays the appropriate units.
There are two types of modules available for the
You may combine these two module types in the
following ways:
One BetaPort–DC electrical module and one
BetaPort–P pressure module, or
Two BetaPort–P pressure modules
WARNING
Do not simultaneously install two BetaPort–DC
electrical modules in the calibrator. The calibrator is not
designed to permit operation with two electrical
modules. Ground potential differences could cause high
current flows through the calibrator which could
damage the calibrator and/or cause bodily injury.
2-1Modules
Page 29
Installing and Removing Modules
You may insert or remove a module while the calibrator
is on or off. If the calibrator is on, the module will selfinitialize within 3 seconds and a reading will display on
the LCD.
When facing the calibrator, the left module bay
corresponds to Channel 1, and the right module bay
corresponds to Channel 2.
CAUTION: Use care when handling modules. It is
recommended that you store unused
modules in the carrying case supplied
with the calibrator. Careless handling of a
module could result in damage to the
module's miniature data connector.
Installation Procedure
Use the following procedure to install a module into the
BetaGauge II:
1.Insert the connector end of the module into the
appropriate module bay. Make sure the serial
number label faces up.
2.Insert the module into the module bay until it is
seated (approximately ¾ inches of the module will
be visible).
CAUTION: The keys and offsets on the module
connector are designed so that the module can be
inserted in one direction only. Excessive force
could damage the module or the calibrator.
NOTE: For information on how to select a channel for
performing specific functions, refer to
Section 3.
Input Modules2-2
Page 30
Removal Procedure
To remove a module from the BetaGauge II calibrator,
place one hand on the calibrator and use the other hand
to firmly grasp the module and pull directly out from
the calibrator.
NOTE: If a BetaPort–P pressure module is removed or
disconnected while the BetaGauge II is reading
pressure units, the display will show an invalid
pressure reading. After a few seconds, the
calibrator will determine that the pressure
module has been disconnected or has
malfunctioned and the following message will
appear: NO MOD.
Input Module Connections
The following paragraphs describe how to connect the
BetaGauge II to field instruments for measuring
pressure and electrical signals.
BetaPort–DC Electrical Modules
To make electrical connections to the BetaPort–DC
module, use standard banana jacks on ¾ inch (19 mm)
centers.
The factory test lead connector is a dual banana
connector with the common pin marked by a tab.
Replacements are readily available from a variety of
sources including Martel Electronics Corporation.
(Consult Factory Sales for details.)
CAUTION: When connecting any electrical
measuring device to an unknown circuit,
it is best to de–energize the circuit before
connecting the device. You can then
energize the circuit from a safe location.
2-3Modules
Page 31
Procedure
Use the following procedure to connect the BetaPort–
DC electrical module to a field device:
NOTE: Install the module in the calibrator prior to
connecting the module to field devices.
1.Insert the common pin (marked by a tab) on the
dual banana connector into the negative (black)
terminal marked with a "–" on the module.
2.Insert the opposite pin into the positive (red)
terminal marked with a "+" on the side labeled "V"
for voltage measurement and "mA" for milliamp
measurement.
NOTE: The BetaPort–DC module is protected from
damage against misconnection to high voltages
up to 120 Volts. In the event that the module is
misconnected to a high voltage, the module
should be checked for correct operation by
comparison with another device of known
performance and similar or better accuracy.
Input Modules2-4
Page 32
BetaPort–P Pressure Modules
The BetaPort–P pressure modules are fitted with 316
S.S. 1/8" FNPT connections. A variety of connectors
and adapters are available from third parties to allow
connection to any type of field device.
It is recommended that you use an appropriate pipe
thread seal (such as Teflon tape) with any connector.
This improves thread sealing and reduces the likelihood
of galling the threads.
Procedure
When installing a connector on a module, always use a
backup wrench to prevent damage to the module or
calibrator. See the illustration below:
Figure 2-1 Using a Backup Wrench
2-5Modules
Page 33
CAUTION: Failure to use a backup wrench may
damage the calibrator and/or the module
and will void the product warranty.
Do not use the pressure connections to
support the calibrator.
Pressure Module Media Compatibility
BetaPort–P pressure modules consist of two basic
types:
non-isolated
isolated
Consult the calibrator specifications (Appendix B) for
details about which modules are isolated and which are
non-isolated.
Modules with isolated sensors have an isolating
diaphragm made of 316 stainless steel and may be used
with any media compatible with 316 S.S., and are
available for most pressure ranges.
CAUTION: Modules with non-isolated sensors may
be used only in the presence of noncorrosive media such as clean, dry, non-
corrosive air or gases. Certain acids may
react with stainless steel and should not
be introduced into the sensor. Consult
with the media or substance manufacturer
for further information.
NOTE: The ranges and the resolution of the various
pressure modules are described in Appendix
B, Specifications.
Input Modules2-6
Page 34
Pressure Module Safety
Always use good safety practices when working with
high pressures. Although liquids are considered noncompressible, dissolved and trapped gases can exist in
the system and can store significant energy when
compressed under high pressure. Always use good
quality fittings that are rated for the pressures you are
using and always use safety glasses or goggles.
Overpressure Protection
The sensors used in BetaPort–P pressure modules have
excellent overpressure specifications. However, it is
possible to damage the sensor if you connect the
module to excessivepressure.
CAUTION: Do not connect the BetaPort–P pressure
module to a pressure source greater than
the full scale range of the module. Doing
so may damage the module.
If you suspect that a module has been subjected to
excessive pressure, compare its performance with an
equivalent device to verify its performance.
CAUTION: Using third party devices to provide
external pressure relief is not
recommended. A leaking pressure relief
device may affect the measurement
accuracy.
A module that has been exposed to excessive
overpressures may indicate stresed on the calibrator
LCD (or EE ERR for earlier versions of firmware). If
this happens, you should return the module to the
factory for service.
2-7Modules
Page 35
Input Modules2-8
Page 36
3-Basic Operations
Overview
The BetaGauge II is a two-channel device. This means
that two variables can be measured and displayed
simultaneously. The display data for the channels 1 and
2 corresponds to the modules installed in the left and
right module bays respectively. Channel 1 appears in
the top half of the LCD display while Channel 2
appears in the bottom half.
The BetaGauge II uses pressure modules to measure
pressure and DC modules to measure electrical signals.
After you have properly installed and connected the
input modules to your field instrument, you can begin to
perform the following basic operations of the
BetaGauge II:
Select channel 1 or channel 2 for performing
specific configuration or modification functions,
such as damping or zeroing a module
Specify pre-programmed display units for
calibrating your field instrument
Zero the displayed values for both pressure and DC
modules
Set the damping factor for channels 1 and 2
View the serial number, the last calibration date for
the modules currently installed, and full scale range
for pressure modules
Program trip detection
Each of the above listed operations are described on the
following pages.
3-1Basic Operations
Page 37
Selecting a Channel for Specific
Functions
Some functions, such as zeroing a module or setting a
damping feature, require that you specify a channel
prior to performing the function.
NOTE: All sample displays representing the LCD in
this guide are depicted with a 0 to 30 PSI
gauge pressure module and/or a DC module.
Procedure
To select a channel for a specific function, press either
the CH 1 or CH 2 key on the keypad. The selected
channel appears in the lower right corner of the LCD
display. A sample display is shown below:
Basic Operations3-2
Page 38
Selecting Pre-Programmed Display
Units
The BetaGauge II allows you to use pre-programmed
display units for calibrating your field instrument. For
each module installed, the BetaGauge II allows you to
select the units used to display data on the LCD. The
following paragraphs describe how to select display
units for both types of modules (BetaPort–DC and
BetaPort–P pressure).
BetaPort–DC Module
The BetaPort–DC module can measure in milliamps or
Volts. Upon initialization, the BetaPort–DC module
defaults to milliamp measurement.
Use the following procedure to specify a voltage
measurement:
1.Press CH 1 or CH 2, as appropriate, to select the
BetaPort–DC module for modification.
2.Press the function key corresponding to V/mA.
This function key is a toggle that alternates
between Volts and milliamps. You can view the
current selection in the LCD display for the
appropriate channel.
NOTE: The BetaPort–DC module is auto-ranging and
automatically selects the most appropriate
range for the measured value. Refer to
Appendix B, Specifications, for complete
range information.
3-3Basic Operations
Page 39
BetaPort–P Pressure Module
The BetaPort–P pressure module can display in any of
the following units:
PSI InHg InWC
mmHg cmWC kPa
bar mbar atm
kpcm MPa (User)
Upon initialization, the BetaPort–P pressure module
defaults to PSI pressure units. Use the following
procedure to select other pre-programmed pressure
units:
1.Press CH 1 or CH 2, as appropriate, to select the
BetaPort–P pressure module for modification.
2.Press the function key corresponding to Unit to
view the list of pre-programmed units. The
menu item allows you to scroll the menu for other
selections.
NOTE: If you select Unit for a channel where the
BetaPort–DC module is installed, the message
Invalid Selection will appear. Press the function
key corresponding to Clear to erase this message
and return to the Setup menu.
3.When the pressure unit you want to use appears,
press the corresponding function key to select the
unit. You can view the current selection in the LCD
display for the appropriate channel.
NOTE: If you select InWC or cmWC, refer to the
section Water Column Measurements on the
following page.
Basic Operations3-4
Page 40
NOTE: The last selection in the list of pressure
units is User, which allows you to define your own
pressure unit for display purposes. Refer to Section
5 for more information.
4.To return to the Setup menu, press the CLR key.
Selecting a Water Column Measurement
In the list of available display units for a BetaPort–P
pressure module, InWCand cmWC are water column
equivalent measurements. If you select a water column
pressure unit, you must also select the appropriate
temperature for water density correction. The available
temperature selections and their recommended use are
60°FAmerican Gas Association
If there is any question regarding temperature
compensation, consult the proper engineering authority
at your facility.
3-5Basic Operations
Page 41
Procedure
To select a water column pressure unit, do the
following:
1.Follow the procedure for selecting pre-programmed
pressure units, selecting InWC or cmWC, as
appropriate. The display screen appears similar to
the one shown below:
CH2InWC
4C20C 60F
2.Press the corresponding function key to select the
appropriate temperature for the water density
correction value you want to use. The display
returns to the list of available units.
3.Press the CLR key to return to the Setup menu.
Zeroing Modules
BetaGauge II pressure and DC modules may sometimes
indicate an offset that requires a zeroing operation.
These offsets typically occur under the following
circumstances:
Each time you turn the calibrator off and on.
Each time you install a new module.
Each time you select a new engineering unit
(pressure module only).
Basic Operations3-6
Page 42
Zeroing Pressure Modules
The BetaGauge II has two different zeroing procedures
for pressure modules, depending on the zero reference
type installed. The two zero reference types include:
Gauge zero. The gauge zero reference type
modules have range labels with markings of PSIG,
“H20, or PSID.
Absolute zero. The absolute zero reference
modules have range labels with the marking of
PSIA.
CAUTION: On initial power-up, if the pressure
displayed by the module while vented to
atmosphere exceeds the reference
pressure by 1% of the module’s full scale
pressure range, then the module’s
performance should be verified against a
pressure reference of equal or better
accuracy prior to use in the field.
Zeroing a Gauge Zero Reference Module
Use the following procedure to zero a gauge zero
reference module:
1.Install the module in either module bay of the
BetaGauge II.
2.Ensure that the BetaGauge II is on.
3.Ensure that the module is vented to the atmosphere.
(In other words, ensure that the module’s sensor is
exposed to the atmosphere by either disconnecting
any tubing, or opening the pressure system to the
atmosphere.)
3-7Basic Operations
Page 43
4.Ensure that the BetaGauge II is displaying the first
four Setup menu items (Trip, Unit, Damp, and
V/mA).
NOTE: Only this menu display allows for both
channel selection and ZERO key operation.
5.Press the channel select key corresponding to the
module bay where the gauge zero reference module
is installed (CH1 for the left side, or CH2 for the
right side).
6.Press the ZERO key.
7.The pressure display should now be zeroed.
NOTE: The pressure display may drift slightly
from zero in the first few minutes after initial
power up. If so, press the ZERO key again while
the appropriate channel is still selected.
Zeroing an Absolute Zero Reference Module
Use the following procedure to zero an absolute zero
reference module:
1.Install the module in either module bay (channel)
of the BetaGauge II.
2.Ensure that the BetaGauge II is on.
3.Ensure that the module is vented to the atmosphere.
(In other words, ensure that the module’s sensor is
exposed to the atmosphere by either disconnecting
any tubing, or opening the pressure system to the
atmosphere.)
Basic Operations3-8
Page 44
4.Ensure that the BetaGauge II is displaying the first
four Setup menu items (Trip, Unit, Damp, and
V/mA).
NOTE: Only this menu display allows for both
channel selection and ZERO key operation.
5.Press the channel select key corresponding to the
module bay where the gauge zero reference module
is installed (CH1 for the left side, or CH2 for the
right side).
6.Press the ZERO key, and the lower portion of the
LCD will prompt for Password.
7.Use the number keys to enter the zeroing code
(found on the original Certificate of Calibration)
for that module, then press the ENTER key. The
display then prompts for the barometric pressure.
8.At the Enter Actual Bar. P prompt, use the keypad
numbers to enter the barometric pressure in PSI as
displayed by your barometric pressure reference,
then press the ENTER key.
NOTE:The barometric pressure value entered
must be in PSI, regardless of the pressure units
currently selected for pressure display on the
BetaGauge II.
The pressure display should now appear in
barometric (atmosphere) pressure units. Note that
the pressure display may drift slightly in the first
few minutes after initial power up. If so, then
repeat steps 6 through 8 while the appropriate
channel is still selected.
3-9Basic Operations
Page 45
Zeroing DC Modules
The BetaGauge II has two different zeroing procedures
for DC modules, depending on the type of electrical
signal to be measured: Volts or milliamps.
Zeroing the Volts Input
Use the following procedure to zero the Volts input on
the DC module:
1.Install the module in either module bay (channel)
of the BetaGauge II.
2.Ensure that the BetaGauge II is on.
3.Install the dual banana jack on the test leads into
the positive Volts jack and the common jack.
4.Clip the alligator clips together. This process shorts
the positive Volts jack to the common jack of the
DC module.
5.Ensure that the BetaGauge II is displaying the first
four Setup menu items (Trip, Unit, Damp, and
V/mA).
NOTE: Only this menu display allows for both
channel selection and ZERO key operation.
6.Press the channel select key corresponding to the
module bay where the DC module is installed
(CH1for the left side, or CH2for the right side).
7.Press the ZERO key.
8.The Volts display should now be zeroed.
NOTE: The Volts display may drift slightly from
zero in the first few minutes after initial power up.
If so, press the ZERO key again while the
appropriate channel is still selected.
Basic Operations3-10
Page 46
Zeroing the Milliamp Input
Use the following procedure to zero the milliamp input
on the DC module:
1.Install the module in either module bay (channel)
of the BetaGauge II.
2.Ensure that the BetaGauge II is on.
3.Ensure that the module’s milliamp jacks are open
circuit. This is done by ensuring that no test leads
are attached to either the positive milliamp jack or
the common jack.
4.Ensure that the BetaGauge II is displaying the first
four Setup menu items (Trip, Unit, Damp, and
V/mA).
NOTE: Only this menu display allows for both
channel selection and ZERO key operation.
5.Press the channel select key corresponding to the
module bay where the DC module is installed
(CH1for the left side, or CH2for the right side).
6.Press the ZERO key.
7.The milliamps display should now be zeroed.
NOTE: The milliamps display may drift slightly
from zero in the first few minutes after initial
power up. If so, press the ZERO key again while
the appropriate channel is still selected.
3-11Basic Operations
Page 47
Setting the Damping Factor for
Ch1/Ch2
The BetaGauge II allows you to enable a damping
feature to reduce the display fluctuations caused by a
noisy input signal (pressure or electrical).
NOTE: The BetaGauge II automatically measures
(or reads) each module three times per second.
The following settings are available:
Damping
SettingThe BetaGauge II …
0.0 (Disabled)Updates the displayed value with
every measurement (three times per
second).
2.0Averages 7 measurements and updates
the displayed value approximately
once every 2 seconds.
5.0Averages 16 measurements and
updates the displayed value
approximately once every 5 seconds.
10.0Averages 31 measurements and
updates the displayed value
approximately once every 10 seconds.
Basic Operations3-12
Page 48
Reset Damping Guidelines
The following reset damping guidelines apply:
The BetaGauge II automatically disables (resets to
0.0 seconds) the damping feature for both channels
each time you turn the calibrator off and on.
The BetaGauge II automatically disables (resets to
0.0 seconds) the damping feature for a particular
channel each time you install, or re-install, a
module into the module bay corresponding to that
channel.
Procedure
To enable and set the BetaGauge II damping feature for
a specific module, do the following:
1.Press the channel select key corresponding to the
module bay where the appropriate module is
installed (CH1 for the left side, or CH2 for the
right side).
2.Use the Menukey to locate the Setup menu item
Damp, then press the corresponding function key.
The lower portion of the LCD will appear similar
to the example shown below:
CHx Damp Factor 0.0
0.02.05.010.0
In the above example:
x = the channel number of the module.
3-13Basic Operations
Page 49
3.Press the function key corresponding to the
damping setting you want to use, then press the
CLR key to return to the Setup menu.
CAUTION: Enabling the damping feature affects
your ability to accurately zero a module’s
displayed value. Therefore, prior to
zeroing the displayed value of a module,
disable the damping feature by setting the
damping value to 0.0.
Viewing Module Information
The BetaGauge II allows you to view the following
information for the modules currently installed in the
calibrator:
Serial number
Full scale range (pressure modules only)
Last calibration date
Procedure
To view module information, do the following:
1.Use the Menukey to locate the Setup menu item
Mod, then press the corresponding function key to
display the Module Info menu.
2.Press the function key corresponding to the channel
you want to view. Remember that CH1 represents
the left module and CH2represents the right
module. The lower portion of the LCD will appear
similar to the examples shown below:
DC Module Example:
DC SN: 610006
Cal: 09/25/2005
Basic Operations3-14
Page 50
Pressure Module Example:
GAGE SN: 0000000003
FS= 15.00 PSI
Cal: 04/16/2005
3.Press the CLR key to return to the Module Info
menu.
4.Press the CLR key again to return to the Setup
menu.
Programming Trip Detection
The BetaGauge II has the ability to detect trips from
either wet or dry contacts using a BetaPort–DC module.
However, this trip detect feature is intended for use with
pressure trip devices only.
CAUTION: Do not install two BetaPort–DC
electrical modules in the calibrator
simultaneously. The calibrator is not
designed to permit operation with two
electrical modules. Ground potential
differences could cause high current
flows through the calibrator which could
damage the calibrator and/or cause bodily
injury.
Wet Contacts
The BetaGauge II will detect wet contact trips when the
voltage input of the DC module crosses the 12 Volt
threshold. The contact wetting voltage should not
exceed 48 Volts, and should be a DC potential.
3-15Basic Operations
Page 51
Dry Contacts
To detect dry contact trips, you must connect dry
contacts to the milliamp input of the calibrator’s DC
module. The BetaGauge II will detect a dry contact trip
when the input resistance crosses the 800 Ohm
threshold.
Hints for Accurate Trip Measurements
There are three areas where it is helpful to have detailed
knowledge before setting up a pressure trip detection:
Selecting a field instrument (hand pump or pressure
controller)
Adjusting the pressure source
Ramping the pressure signal
Field Instrument Selection
You can use either a hand pump or a pressure controller
as a pressure source for detecting pressure trips. Use the
following guidelines when selecting either of these field
instruments:
Hand Pump. Select a hand pump with a Vernier
adjustment knob so that you can make fine
adjustments.
Pressure Controller. Select a pressure controller
that has an easy micro-adjustment method.
Basic Operations3-16
Page 52
Pressure Source Adjustment
Perform the following tasks to adjust the pressure
source prior to starting a pressure trip test:
1.Learn the direction (low-going or high-going) in
which the trip will occur and approximately where
the device is expected to trip (in terms of pressure).
2.Use the coarse adjustment control of the pressure
source to set the pressure 5 to10% away from the
trip point.
3.Use the fine adjustment control of the pressure
source to ramp through the expected pressure trip
point.
Pressure Signal Ramping
The slower you ramp the pressure signal, the more
accurate the captured trip value will be. This is due not
only to the response time of the pressure trip
instrument, but also to the operation of the BetaGauge
II. The BetaGauge II takes a pressure reading three
times a second, and in between these pressure readings,
it performs background tasks such as monitoring the
keyboard, updating the display, monitoring temperature,
and performing internal calibrations and checks.
3-17Basic Operations
Page 53
Preliminary Setup
Use the following procedure to set up the BetaGauge II
for trip detection:
1.Connect the alligator clip ends of the test leads
(supplied with the BetaGauge II) to the contacts
you want to monitor.
2.Do one of the following:
If the contacts are wet (have voltage on one or
both sides), connect the dual banana jack to
the voltage input of the DC module.
If the contacts are dry, connect the dual banana
jack to the milliamp input terminals of the DC
module (for monitoring resistance changes).
NOTE:The BetaGauge II detects wet or dry trips
depending on where the test leads are connected to
the DC module (V or mA jacks). It is not necessary
to set the DC module units for Volts or milliamps.
3.Connect a pressure source to both the installed
pressure module and the pressure trip instrument
under test.
4.Use the Zero key to zero the pressure module as
needed while the pressure circuit is vented to the
atmosphere.
To continue with the actual programming of a pressure
trip detection, see the paragraphs below.
Basic Operations3-18
Page 54
Procedure
Use the following procedure to program a trip
detection:
1.Press CH 1 or CH 2, as appropriate, to activate the
BetaPort–DC module.
2.Use the Menukey to locate the Setup menu item
Trip, then press the corresponding function key to
display a screen similar to the one shown below:
CHx Trip Disabled
Dis. EnabReset
In the above example:
x = the channel number of the DC module.
3.To enable the trip detect status, press the function
key corresponding to the menu item Enab, and the
electrical signal display will read READY.
4.Close the pressure circuit of the trip instrument,
then slowly re-apply pressure (or vacuum) to the
pressure circuit.
5.The electrical signal display will continue to read
READY until the calibrator detects a change of state
from the contacts. Once this change of state occurs,
the display will read TRIP and the pressure input
display will freeze at the point of the trip.
6.Maintain the pressure (or vacuum) from the
pressure source, then press the function key
corresponding to Reset. The BetaGauge II will
once again display READY, in preparation for
detecting the reset point.
3-19Basic Operations
Page 55
7.If possible, use the micro-adjustment of the
pressure source to ramp towards the reset point of
the pressure trip device. The display will again
display TRIP when the BetaGauge II detects the
reset point.
8.When you have completed trip detect testing, do
the following:
Vent the pressure source.
Disconnect all test circuits.
Press the function key corresponding to Dis. to
disable the trip detection feature.
Press the CLR key to return to the Setup
menu.
Basic Operations3-20
Page 56
4-User Preferences
Overview
There are many BetaGauge II preferences settings that
you can program to meet your special needs. Although
you can change these settings as often as you like, most
users set them once when they acquire their calibrator.
The BetaGauge II user preferences settings are listed
below:
View and program the owner and calibrator
information
Turn the keypad beep on/off
Set the LCD preferences
Set the automatic shut off delay time
Set and format the time display
Set and format the date display
Each of the above listed operations are described on the
following pages.
4-1User Preferences
Page 57
Programming and Viewing Calibrator
Information
The BetaGauge II allows you to enter the owner’s name
(or other identification) into the calibrator’s non-
volatile memory. You can then view this identification,
as well as the following information, upon demand:
Serial number of the calibrator
Calibrator’s last factory acceptance date
Entering Owner Identification
To program the owner’s name (or other identification)
into the calibrator’s non-volatile memory, do the
following:
1.Press the Menu key repeatedly until the Calib
menu appears.
2.Press the function key corresponding to the
displayed menu item Info.
3.Press the function key corresponding to the menu
item Prty to display the Property of: screen. A
sample is shown below:
Property Of:
MARTEL
4.Use the CLR key to erase the character to the left
of the cursor and use the arrow keys on the keypad
to scroll through the available character set. When
the desired character is displayed, press the
ENTER key to accept the character and move the
cursor to the right. A maximum of 20 characters
may be entered for identification.
NOTE: Pressing the ENTER key twice in a row
ends editing. Therefore, to specify the same
character consecutively, use the up and down arrow
keys to select the second character.
User Preferences4-2
Page 58
Viewing Calibrator Information
To view calibrator information, do the following:
1.Use the Menukey to locate the Setup menu item
Owner, then press the corresponding function key.
The following data appears in the lower portion of
the LCD:
Owner’s name
Serial number of the calibrator
Calibrator’s last factory acceptance date
A sample is shown below:
MARTEL
SN:17009
Cal. Date: 04/25/2006
2.To return to the Setup menu, press the CLR key.
Turning the Keypad Beep On/Off
The BetaGauge II allows you to specify whether or not
you will hear a beep when you press any key on the
keypad.
Procedure
To turn the keypad beep on/off, do the following:
1.Use the Menukey to locate the Setup menu item
Beep, then press the corresponding function key.
The lower portion of the LCD will appear similar
to the example shown below:
Beep : Enabled
Dis. Enab
4-3User Preferences
Page 59
2.To disable the beep sound, press the function key
corresponding to the menu item Dis.
3.To enable the beep sound, press the function key
corresponding to the menu item Enab.
4.To clear the display and return to the Setup menu,
press the CLR key.
Setting LCD Preferences
The BetaGauge II allows you to set the following LCD
variables:
Specify the length of time the LCD backlight will
remain illuminated
Set the LCD contrast
Perform a contrast recovery procedure to restore
the display.
Setting the Backlight Off Delay Time
The BetaGauge II has an integral backlight so that you
can read the display in poorly-lighted conditions.
However, in order to reduce power consumption, you
can configure the backlight to automatically turn off
after a specified time.
NOTE: Press the starburst symbol on the keypad to
turn the backlight on when ambient lighting is
insufficient.
Procedure
To specify the length of time the backlight will remain
illuminated, do the following:
1.Use the Menukey to locate the Setup menu item
LCD, then press the corresponding function key to
display the LCD menu.
User Preferences4-4
Page 60
2.Press the function key corresponding to the menu
item LED. The lower portion of the LCD will
appear similar to the example shown below:
Set backlit time
33seconds
3.Use the numbers on the keypad to enter a backlight
display value between 0 and 3600 seconds, then
press the ENTER key to return to the LCD menu.
NOTE:If you attempt to enter a value outside this
range, an Invalid Entry message will
appear.
To erase an existing entry or to correct a
mistake, use the CLR key to erase the character to
the left of the cursor.
4.From the LCD menu, press the CLRkey to return
to the Setup menu.
Setting the LCD Contrast
The BetaGauge II is supplied with a variable contrast
display that you can lighten or darken as necessary.
Procedure
To set the display contrast, do the following:
1.Use the Menukey to locate the Setup menu item
LCD, then press the corresponding function key to
display the LCD menu.
2.Press the function key corresponding to the menu
item Contrast. The lower portion of the LCD will
appear similar to the example shown below:
Adjust Contrast
Light Dark
4-5User Preferences
Page 61
3.Press the menu items Lightor Dark as many times
as necessary to adjust the LCD contrast.
4.When you have completed setting the contrast,
press the CLR key to return to the LCD menu.
5.Press the CLR key again to return to the Setup
menu.
Recovering the LCD Contrast
Extreme hot and/or cold temperatures can affect the
LCD contrast. If your calibrator is exposed to either of
these conditions, or if for any other reason, your LCD is
too light or too dark, you can restore the display even if
you cannot read it.
To recover the LCD contrast, do the following:
1.Turn the calibrator on and wait five seconds for
initialization.
2.Press the MENU key twice.
3.Press the F1 key.
4.Press the F2 key.
5.Do one of the following:
If the display is dark, press F1 repeatedly until
the display is visible.
If the display is light, press F2 repeatedly until
the display is visible.
NOTE: The contrast will wrap around until it is
visible, regardless of which function key you press.
6.Turn the calibrator off and on again to verify that
the contrast has been recovered.
User Preferences4-6
Page 62
Setting the Automatic Shut Off Delay
Time
To prevent the battery pack from discharging while the
calibrator is not in use, you can program the BetaGauge
II to automatically shut off after a pre-defined period of
idle time. Idle time is defined as a period with no key
presses. You can also disable this feature if necessary.
Procedure
To set the automatic shut off delay time, do the
following:
1.Use the Menukey to locate the Setup menu item
Off, then press the corresponding function key. The
lower portion of the LCD will appear similar to the
example shown below:
Auto off Enabled
Dis. Enab Set
2.To disable the automatic shut off, press the
function key corresponding to the menu item Dis.
3.To enable the automatic shut off, press the function
key corresponding to the menu item Enab.
4.To set the delay time for the automatic shut off
feature, press the function key corresponding to the
menu item Set. The lower portion of the LCD will
appear similar to the example shown below:
Set Auto Off time
200seconds
4-7User Preferences
Page 63
5.Use the numbers on the keypad to enter a delay
value between 200 and 3600 seconds, then press
the ENTER key to return to the Auto Off menu.
NOTE:If you attempt to enter a value outside this
range, an Invalid Entry message will
appear. To erase an existing entry or to correct a
mistake, use the CLR key to erase the character to
the left of the cursor.
6.From the Auto Off menu, press the CLR key to
return to the Setup menu.
Setting and Formatting the Time
Display
The BetaGauge II allows you to manually set the time
as well as format the time display. The calibrator time
appears in the upper left portion of the LCD.
NOTE: Instrument maintenance software packages can
set the calibrator’s real time clock according to
the computer time. The format of the time
display is not affected.
Setting the Time
To manually set the calibrator time, do the following:
1.Use the Menukey to locate the Setup menu item
Time, then press the corresponding function key to
display the Set time menu as shown below:
Set time
SecMinHrs
User Preferences4-8
Page 64
2.Press the function key corresponding to the menu
item Sec to display the Set Second screen as shown
below:
Set Second
3.Use the number keys on the keypad to enter a value
between 0 and 59 seconds, then press the ENTER
key to return to the Set time menu.
NOTE: If you attempt to enter a value outside this
range, an Invalid Entry message will
appear. To erase an existing entry or to correct a
mistake, use the CLR key to erase the character to
the left of the cursor.
4.To set values for minutes and hours, repeat steps 2
and 3, pressing the appropriate function keys.
NOTE: To set a pm time for the hours value, enter
the hour in 24-hour format. For example,
enter the value 15 to specify 3 p.m.
5.Press the CLR key to return to the Setup menu.
Formatting the Time
To specify whether you want the time to display in 12
or 24-hour format, do the following:
1.Use the Menukey to locate the Setup menu item
Format, then press the corresponding function key.
The lower portion of the LCD will appear similar
to the example shown below:
Format Date time
dmy mdy ymd 12Hr
4-9User Preferences
Page 65
2.The rightmost menu item allows you to toggle
between 12 and 24-hour format. Press the function
key corresponding to the menu item 12Hr or 24Hr,
as appropriate.
NOTE: Notice how the display time in the upper
left portion of the LCD changes between
12 and 24 hour format as you toggle
between the two.
3.Press the CLR key to return to the Setup menu.
Setting and Formatting the Date
Display
The BetaGauge II allows you to manually set the date
as well as format how the date will display. The
calibrator date appears in the upper left portion of the
LCD.
NOTE: Instrument maintenance software packages can
set the calibrator’s real time date according to
the computer date. The format of the date
display is not affected.
Setting the Date
To manually set the calibrator date, do the following:
1.Use the Menukey to locate the Setup menu item
Date, then press the corresponding function key to
display the Set Date menu as shown below:
Set Date
Day Month Year
User Preferences4-10
Page 66
2.Press the function key corresponding to the menu
item Day to display the Set Day screen as shown
below:
Set Day
3.Use the numbers on the keypad to enter the day of
the month between 0 and 31, then press the
ENTER key to return to the Set Date menu.
NOTE: If you attempt to enter a value outside this
range, an Invalid Entry message will
appear. To erase an existing entry or to correct a
mistake, use the CLR key to erase the character to
the left of the cursor.
4.To set values for month and year, repeat steps 2
and 3, pressing the appropriate function keys.
NOTE: If you set the year to a value of 90 or
lower, the system will automatically prefix the
value with 20, i.e., 2090. The system will prefix all
other values with 19.
5.Press the CLR key to return to the Setup menu.
Formatting the Date
You can specify the calibrator date to appear in any of
the following formats:
dmy (day, month, year)
mdy (month, day, year)
ymd (year, month, day)
4-11User Preferences
Page 67
Procedure
To specify the date format, do the following:
1.Use the Menukey to locate the Setup menu item
Format, then press the corresponding function key.
The lower portion of the LCD will appear as shown
below:
Format Date time
dmy mdy ymd 12Hr
2.The first three menu items allow you specify the
date format you want to use. Press the function key
corresponding to the menu item dmy, mdy, or ymd,
as appropriate.
NOTE: Notice how the display date in the upper
left portion of the LCD changes as you
select different formats.
3.Press the CLR key to return to the Setup menu.
User Preferences4-12
Page 68
5-Advanced Display Modes
Overview
The BetaGauge II allows you to define advanced
display modes for both the BetaPort–P pressure and
BetaPort–DC modules. This section describes how to
set up these advanced display modes.
NOTE: For information on how to use pre-
programmed display units, refer to Section 3.
Programming a User Defined Pressure
Unit
If none of the eleven (11) pre-programmed pressure
units (listed in Section 3) meet your needs, the
BetaGauge II allows you to program your own pressure
unit. Before setting up a user defined pressure unit,
make sure that the pressure module you wish to use is
installed in the module bay of your choice.
NOTE: The procedure for programming a user defined
pressure unit involves defining a label (name)
for the pressure unit. For the following
procedure, we will define an example user unit
of Feet of Water Column at 20°C.
5-1 Advanced Display Modes
Page 69
Procedure
Use the following procedure to define a pressure unit of
your choice:
1.Press CH1 or CH2 to indicate the appropriate bay
in which the pressure module is installed.
2.Use the MENU key to locate the Setup menu item
User, then press the corresponding function key to
display the following screen:
CHx Ent. Unit: yyyy
In the above example:
x = the channel number of the pressure module,
yyyy = the current user unit label.
3.Specify a unit label by using the CLR key to erase
the character (if any) to the left of the cursor and
use the arrow keys on the keypad to scroll through
the available character set. When the desired
character is displayed, press the ENTER key to
accept the character and move the cursor to the
right. A maximum of 4 characters may be entered
for identification.
NOTE: Pressing the ENTER key twice in a row
ends editing. Therefore, to specify the same
character consecutively, use the up and down arrow
keys to select the second character.
For the example Feet of Water Column at 20°C,
you would enter FTWC.
Advanced Display Modes5-2
Page 70
4.When the unit label is satisfactory, press the
ENTER key once again to display the following
screen:
Ent. 1PSI =
5.Use the numbers on the keypad to specify the
1 PSI equivalent value of your user unit, then press
the ENTER key to return to the Setup menu.
NOTE: For the example Feet of Water Column at
20°C, you would enter 2.3108.
6.Use the MENU key to locate the Setup menu item
Unit, then press the corresponding function key to
display a screen similar to the following:
CHx
mmHg cmWC Kpa→
7.Press the function key corresponding to → through
as many screens as necessary until the unit you
defined appears in the display.
8.Press the function key associated with the pressure
unit you defined in step 3 and the pressure will
begin to display as specified.
NOTE: In the case of the example, the pressure
will begin to display in Feet of Water Column at
20°C.
9.Press the CLR key to return to the Setup menu.
5-3 Advanced Display Modes
Page 71
Programming Display Modes for
BetaPort–DC Modules
The BetaGauge II allows you to define process signals
for display using any of the following modes:
engineering units
percent scale
percent error
square root extraction
NOTE: Before performing any of the procedures for
setting up display modes for BetaPort–DC
modules, ensure that you are familiar with the
input and output signal ranges of the field
instrument you are calibrating.
The following paragraphs describe how to set up the
display modes listed above.
Engineering Unit Display
When you want to display electrical signals in
engineering units, you must perform the following
procedures:
Define a unit label, or name.
Define the type of field instrument you want to
calibrate:
- Pressure transmitter (P/I)
- Electrical to pressure converter (I/P)
- Other
Define the engineering low and high values with
respect to the expected field instrument output
signals.
Advanced Display Modes5-4
Page 72
Defining a Unit Label
To define a unit label, do the following:
1.Ensure that a BetaPort–DC module is installed in
one of the module bays, then press CH1 or CH2 to
indicate the appropriate bay in which the DC
module is installed.
2.If necessary, use the V/mA Setup menu item to
change the electrical units to match the field
instrument's electrical signal.
3.Use the Menukey to locate the Setup menu item
User, then press the corresponding function key to
display the following screen:
CHx Ent. Unit: yyyy
In the above example:
x = the channel number of the DC module,
yyyy = the current user unit label.
4.Specify a unit label by using the CLR key to erase
the character (if any) to the left of the cursor and
use the arrow keys on the keypad to scroll through
the available character set. When the desired
character is displayed, press the ENTER key to
accept the character and move the cursor to the
right. A maximum of 4 characters may be entered
for identification.
NOTE: Pressing the ENTER key twice in a row
ends editing. Therefore, to specify the same
character consecutively, use the up and down arrow
keys to select the second character.
5.When you have completed entering the unit label,
press the ENTER key once again to return to the
Setup menu.
5-5 Advanced Display Modes
Page 73
Defining the Field Instrument Type
To define the type of field instrument you want to
calibrate, do the following:
1.Use the Menukey to locate the Setup menu item
Mode, then press the corresponding function key to
display the following screen:
Calib Instr
P/II/POther
2.Press the corresponding function key to select the
type of field instrument you want to calibrate: P/I,
I/P, or Other.
3.If you select Other, the following screen will
display:
Instrument Input:
CH1 CH2
4.Do one of the following:
To indicate that you want the DC module to be
the field instrument input, select the function
button corresponding to the DC module’s
present channel.
To indicate that you want the DC module to be
the field instrument output, select the opposite
channel.
NOTE: Input and output references are with
respect to the field instrument.
5.After you select the field instrument type, the main
linearization screen displays. Use this screen to
begin defining the engineering low and high values
as described in the next procedure.
Advanced Display Modes5-6
Page 74
Defining Engineering Low/High Values
To define the engineering low and high values with
respect to the expected field instrument output signals,
do the following:
1.After you define the field instrument type, the
following main linearization screen displays:
CHx Mode: yyyy
StdEng Sqrt→
In the above example:
x = the channel number of the DC module,
yyyy = the current linearization mode of the DC
module channel.
2.Press the function key corresponding to Engand
the display screen prompts you for the field
instrument’s in/out low value. A sample screen is
shown below:
CHx Instr: Out Lo
3.Use the keypad numbers to enter a value equal to
the expected low electrical signal value of the field
instrument, then press the ENTER key.
4.After you have specified an expected low electrical
signal value, the display screen individually
prompts you for the following field instrument
values:
expected high electrical signal value
engineering low value
engineering high value
Repeat step 3 to enter values for each of the above
prompts.
5-7 Advanced Display Modes
Page 75
5.After you have specified all of the values in step 4,
the display screen prompts you for the number of
decimal places you want to display. A sample
screen is shown below:
CHx Ent. Decimals:
6.Use the keypad numbers to enter the number of
decimal places you want to appear on the display
(from 1 to 3), then press the ENTER key to return
to the Calib Instr menu.
7.Press the CLR key to return to the Setup menu.
The BetaGauge II should now display the input
electrical signals using the values defined for the
engineering range.
Percent Scale Display
The BetaGauge II will display either or both of a field
instrument's input or output values in percent of scale.
When you want to display electrical signals in percent
of scale, you must perform the following procedures:
Define the type of field instrument you want to
calibrate:
- Pressure transmitter (P/I)
- Electrical to pressure converter (I/P)
- Other
Define values equal to the expected low and high
electrical signal values of the field instrument.
Advanced Display Modes5-8
Page 76
Defining the Field Instrument Type
To define the type of field instrument you want to
calibrate, do the following:
1.Ensure that a BetaPort–DC module is installed in
one of the module bays, then press CH1 or CH2 to
indicate the appropriate bay in which the DC
module is installed.
2.Use the Menukey to locate the Setup menu item
%Fnc, then press the corresponding function key to
display the following screen:
Calib Instr
P/II/POther
3.Press the corresponding function key to select the
type of field instrument you want to calibrate: P/I,
I/P, or Other.
4.If you select Other, the following screen will
display:
Instrument Input:
CH1 CH2
5.Do one of the following:
To indicate that you want the DC module to be
the field instrument input, select the function
button corresponding to the DC module’s
present channel.
To indicate that you want the DC module to be
the field instrument output, select the opposite
channel.
NOTE: Input and output references are with
respect to the field instrument.
5-9 Advanced Display Modes
Page 77
6.After you select the field instrument type, the main
linearization screen displays. Use this screen to
begin defining the expected low and high electrical
signal values of the field instrument as described in
the next procedure.
Defining the Expected Low/High Values
To define the expected low and high electrical signal
values of the field instrument, do the following:
1.After you define the field instrument type, the
following main linearization screen displays:
CHx Mode: yyyy
StdEng Sqrt→
In the above example:
x = the channel number of the DC module,
yyyy = the current linearization mode of the DC
module channel.
2.Press the function key corresponding to the
menu item, and the following screen displays:
CHx Mode: yyyy
%Scal %Err→
3.Press the function key corresponding to %Scal and
the display screen prompts you for the field
instrument’s in/out low value. A sample screen is
shown below:
CHx Instr: In/Out Lo
Advanced Display Modes 5-10
Page 78
4.Use the keypad numbers to enter a value equal to
the expected low electrical signal value of the field
instrument, then press the ENTER key. The
display screen then prompts you for an expected
high electrical signal value.
5.Repeat step 4 to enter a value for the expected high
electrical signal value.
6.After you have specified values for both the
expected low and high electrical signals, the
display screen will return to the main linearization
screen. At this point, you can do one of the
following:
Press the opposite channel select key and
program another linearization mode for the
remaining module.
Press the CLR key to return to the Setup
menu.
Percent Error Display
The BetaGauge II will display a field instrument’s
output in percent error with respect to the field
instrument’s input.
When you want to display electrical signals in percent
error, you must perform the following procedures:
Define the type of field instrument you want to
calibrate:
- Pressure transmitter (P/I)
- Electrical to pressure converter (I/P)
- Other
Define the expected signal values for both the low
and high ends of the field instrument’s input and
output scales.
5-11 Advanced DisplayModes
Page 79
Defining the Field Instrument Type
To define the type of field instrument you want to
calibrate, do the following:
1.Ensure that a BetaPort–DC module is installed in
one of the module bays, then press CH1 or CH2 to
indicate the appropriate bay in which the DC
module is installed.
2.Use the Menukey to locate the Setup menu item
%Fnc, then press the corresponding function key to
display the following screen:
Calib Instr
P/II/POther
3.Press the corresponding function key to select the
type of field instrument you want to calibrate: P/I,
I/P, or Other.
4.If you select Other, the following screen will
display:
Instrument Input:
CH1 CH2
5.Do one of the following:
To indicate that you want the DC module to be
the field instrument input, select the function
key corresponding to the DC module’s present
channel.
To indicate that you want the DC module to be
the field instrument output, select the opposite
channel.
NOTE: Input and output references are with
respect to the field instrument.
Advanced Display Modes 5-12
Page 80
6.After you select the field instrument type, the main
linearization screen displays. Use this screen to
begin defining the expected low and high values for
the field instrument’s input and output scales as
described in the next procedure.
Defining the Expected Low/High Values
1.After you define the field instrument type, the
following main linearization screen displays:
CHx Mode: yyyy
StdEng Sqrt→
In the above example:
x = the channel number of the DC module,
yyyy = the current linearization mode of the DC
module channel.
2.Press the function key corresponding to the
menu item, and the following screen displays:
CHx Mode: yyyy
%Scal %Err→
3.Press the function key corresponding to %Err and
the display screen prompts you for the field
instrument’s in/out low value. A sample screen is
shown below:
CHx Instr: Out Lo
4.Use the keypad numbers to enter the value of the
signal expected for the low end of the field
instrument’s output scale, then press the ENTER
key.
5-13 Advanced DisplayModes
Page 81
5.The display screen individually prompts you for the
following values:
expected signal value for the high end of the
field instrument’s output scale
expected signal value for the low end of the
field instrument’s input scale
expected signal value for the high end of the
field instrument’s input scale
Repeat step 4 to enter values for each of the above
prompts.
6.After you have specified all of the values in step 5,
the display screen will return to the main
linearization screen. At this point, you can do one
of the following:
Press the opposite channel select key and
program another linearization mode for the
remaining module.
Press the CLR key to return to the Setup
menu.
Advanced Display Modes 5-14
Page 82
Square Root Extraction
The BetaGauge II is capable of extracting square roots
from flow transmitters or other devices that output a
squared output signal.
Before setting up a square root extraction display, you
must perform the following procedures:
Define a unit label, or name.
Define the expected output milliamp signal for
flows that are equal to 0% and 100%, and define
both the low and high end flow variables.
NOTE: For the following square root extraction
procedures, you must install both a pressure
module and a DC module into the calibrator.
Defining a Unit Label
To define a unit label, do the following:
1.Press CH1 or CH2 to indicate the appropriate bay
in which the DC module is installed.
2.Use the Menukey to locate the Setup menu item
User, then press the corresponding function key to
display the following screen:
CHx Ent. Unit: yyyy
In the above example:
x = the channel number of the DC module,
yyyy = the current user unit label.
5-15 Advanced DisplayModes
Page 83
3.Specify a unit label by using the CLR key to erase
the character (if any) to the left of the cursor and
use the arrow keys on the keypad to scroll through
the available character set. When the desired
character is displayed, press the ENTER key to
accept the character and move the cursor to the
right. A maximum of 4 characters may be entered
for identification.
NOTE: Pressing the ENTER key twice in a row
ends editing. Therefore, to specify the same
character consecutively, use the up and down arrow
keys to select the second character.
4.When you have completed entering the unit label,
press the ENTER key once again to return to the
Setup menu.
Defining Output Milliamp Signal Values
1.Use the Menukey to locate the Setup menu item
Mode, then press the corresponding function key to
display the following screen:
Calib Instr
P/II/POther
2.Press the function key corresponding to the P/I
(pressure transmitter) menu item and the following
main linearization screen displays:
CHx Mode: yyyy
StdEng Sqrt→
In the above example:
x = the channel number of the DC module,
yyyy = the current linearization mode of the
current DC module channel.
Advanced Display Modes 5-16
Page 84
3.Press the function key corresponding to Sqrt and
the display screen prompts you for the field
instrument’s expected output signal for a 0% flow.
A sample screen is shown below:
CHx Instr. Out Lo
4.Use the keypad numbers to enter the value of the
expected output milliamp signal when the flow is
equal to 0% (typically 4 for a 4-20 milliamp
output). Press the ENTER key.
5.The display screen individually prompts you for the
following values:
expected output milliamp signal when the flow
is equal to 100% (typically 20 for a
4 to 20 milliamp output)
number equal to the low end flow variable; for
example, if the process was 2 to 300 GPM,
you would enter 2.
number equal to the high end flow variable; for
example, if the process was 2 to 300 GPM,
you would enter 300.
Repeat step 4 to enter values for each of the above
prompts.
6.After you have specified all of the values in step 5,
the following display screen appears:
CHx Ent. Decimals:
5-17 Advanced DisplayModes
Page 85
7.Use the numbers on the keypad to enter the number
of decimal places (1 to 3 ) you want to appear in
the display, then press the ENTER key to return to
the Calib Instr menu.
8.Press the CLR key to return to the Setup menu.
Advanced Display Modes 5-18
Page 86
6- Application Notes
Overview
The BetaGauge II allows you to perform many different
calibration tests. In addition, the configurations of these
tests may vary, depending on whether you are using the
conventional calibrator mode or documenting calibrator
(SYS) mode of operation.
Modes of Operation
The BetaGauge II has two modes of operation: the
conventional calibrator mode and the documenting
calibrator (SYS) mode.
In the conventional mode, the BetaGauge II monitors
signals to and from a field instrument for the purposes
of testing or calibrating that instrument. If you want to
document the field instrument’s input and output values
using the conventional mode, you must manually record
the information.
In the documenting calibrator (SYS) mode, the
BetaGauge II prompts the user to apply input signals to
the instrument, and then documents the instrument’s
output signal.
NOTE: For more information on how to use the
documenting calibrator (SYS) mode, refer to
Section 7.
6-1Application Notes
Page 87
Other Necessary Equipment
When using the BetaGauge II to calibrate your field
instruments, it is necessary that you have certain
equipment at your disposal. This equipment must be
capable and accurate to result in an accurate calibration.
A list of the equipment that may be required, depending
on the type of test you want to perform, is shown below:
(SYS mode using manual data entry only)
NOTE: For documentation purposes, you can use
manual entries for a field instrument’s input
and output values while operating in SYS
mode.
6-3Application Notes
Page 89
Electrical to Pressure Test
You can perform an electrical to pressure calibration
test using either the conventional mode or the SYS
mode of operation. The following paragraphs describe
all of the possible configurations, as well as, the other
necessary equipment to perform an electrical to
pressure test.
Conventional Mode
You may perform this test if:
Your field instrument has an electrical input
range within the ability of the DC module on
the BetaGauge II, and
Your field instrument has a pressure output
range within the ability of the pressure module
on the BetaGauge II.
Field Instrument Setup
Electrical input
Pressure output
Other Necessary Equipment
Electrical source
Application Notes6-4
Page 90
Illustration
A graphical representation for configuring an
electrical to pressure calibration test using the
conventional mode of operation is shown below:
Figure 6-1 Electrical to Pressure Calibration Test
Using Conventional Mode
6-5Application Notes
Page 91
SYS Mode
There are two methods for configuring an electrical to
pressure calibration test using SYS mode. The
following table indicates which method to use.
Use this method if…
Method 1Your field instrument has a pressure
output range within the ability of the
pressure module on the BetaGauge II.
Method 2Your field instrument has a pressure
output range that exceeds the ability of
the pressure module on the BetaGauge
II.
NOTE: While in SYS mode, the BetaGauge II cannot
measure the electrical input signals to the field
instrument. You must manually enter the value
of these signals on the BetaGauge II.
Method 1
Software Instrument Setup
Electrical input (requires manual entry on the
BetaGauge II)
Pressure output
Other Necessary Equipment
Electrical source
Application Notes6-6
Page 92
Illustration
A graphical representation for configuring the
Method 1 electrical to pressure calibration test
using the SYS mode of operation is shown below:
Figure 6-2 Electrical to Pressure Calibration Test
Using SYS Mode (Method 1)
6-7Application Notes
Page 93
Method 2
Software Instrument Setup
Electrical input (requires manual entry on the
BetaGauge II)
Pressure output (requires manual entry on the
BetaGauge II)
Other Necessary Equipment
Electrical source
Pressure measurement device
Application Notes6-8
Page 94
Illustration
A graphical representation for configuring the
Method 2 electrical to pressure calibration test
using the SYS mode of operation is shown below:
Figure 6-3 Electrical to Pressure Calibration Test
Using SYS Mode (Method 2)
6-9Application Notes
Page 95
Pressure to Electrical Test
You can perform a pressure to electrical calibration test
using either the conventional mode or the SYS mode of
operation. The following paragraphs describe all of the
possible configurations, as well as, the other equipment
necessary to perform a pressure to electrical test.
Conventional Mode
You may perform this test if:
Your field instrument has a pressure input
range within the ability of the pressure module
on the BetaGauge II, and
Your field instrument has an electrical output
range within the ability of the DC module on
the BetaGauge II.
Field Instrument Setup
Pressure input
Electrical output
Other Necessary Equipment
Pressure source
Application Notes6-10
Page 96
Illustration
A graphical representation for configuring a
pressure to electrical calibration test using the
conventional mode of operation is shown below:
Figure 6-4 Pressure to Electrical Calibration Test
Using Conventional Mode
6-11Application Notes
Page 97
SYS Mode
There are four methods for configuring a pressure to
electrical calibration test using SYS mode. The
following table indicates which method to use.
Use this method if…
Method 1 Your field instrument has a pressure
output range within the ability of the
pressure module on the BetaGauge
II, and
Your field instrument has an
electrical output range within the
ability of the DC module on the
BetaGauge II.
Method 2
Your field instrument has a pressure
input range that exceeds the ability
of the pressure module on the
BetaGauge II,and
Your field instrument has an
electrical output range within the
ability of the DC module on the
BetaGauge II.
Method 3
Your field instrument has a pressure
input range within the ability of the
pressure module on the BetaGauge
II, and
Your field instrument has an
electrical output range that exceeds
the ability of the DC module on the
BetaGauge II.
Application Notes6-12
Page 98
Use this method if…
Method 4
Your field instrument has a
pressure input range that
exceeds the ability of the
pressure module on the
BetaGauge II,and
Your field instrument has an
electrical output range that
exceeds the ability of the DC
module on the BetaGauge II.
6-13Application Notes
Page 99
Method 1
Software Instrument Setup
Pressure input
Electrical output
Other Necessary Equipment
Pressure source
Application Notes6-14
Page 100
Illustration
A graphical representation for configuring the
Method 1 pressure to electrical calibration test
using the SYS mode of operation is shown below:
Figure 6-5 Pressure to Electrical Calibration Test
Using SYS Mode (Method 1)
6-15Application Notes
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