Omega | DFG-RS3 | Owner Manual | Omega DFG-RS3 Owner Manual

Omega DFG-RS3 Owner Manual
Model DFG-RS3
Digital Force / Torque Indicator
Model DFG-RS3 Digital Force/Torque Indicator
User’s Guide
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Model DFG-RS3 Digital Force/Torque Indicator
User’s Guide
Thank you…
Thank you for purchasing an Omega Model DFG-RS3 digital force / torque indicator, designed for use
with interchangeable remote force and torque sensors.
With proper usage, we are confident that you will get many years of great service with this product.
Omega instruments are ruggedly built for many years of service in laboratory and industrial environments.
This User’s Guide provides setup, safety, and operation instructions. Dimensions and specifications are
also provided. For additional information or answers to your questions, please do not hesitate to contact
us. Our technical support and engineering teams are eager to assist you.
Before use, each person who is to use a Model DFG-RS3 indicator should be fully trained in
appropriate operation and safety procedures.
TABLE OF CONTENTS
OVERVIEW .........................................................3
POWER ...............................................................5
MECHANICAL SETUP .......................................6
HOME SCREEN AND CONTROLS ...................7
DIGITAL FILTERS ..............................................9
SET POINT INDICATORS ................................10
OPERATING MODES.......................................10
CHANGING THE UNITS...................................11
COMMUNICATIONS AND OUTPUTS .............11
CALIBRATION .................................................13
OTHER SETTINGS...........................................17
SPECIFICATIONS ............................................20
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Model DFG-RS3 Digital Force/Torque Indicator
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1 OVERVIEW
1.1 List of included items
Qty.
1
1
1
1
1
1
Part No.
12-1049
08-1022
08-1026
09-1165
-
Description
Carrying Case
AC adapter body with US, EU, or UK prong
Battery (inside the indicator)
Certificate of conformance
USB cable
Resource CD (USB driver, user’s guide)
1.2 General Overview
The DFG-RS3 is a universal indicator designed for displaying measurements from interchangeable
Omega Series RLC and RTQ sensors. These sensors can be handheld or mounted to a fixture or test
stand for more sophisticated testing requirements.
These sensors may be used with the DFG-RS3 or DFG-RS5 indicators. They may be disconnected from
one indicator and connected to another without the need for re-calibration or re-configuration. All such
data is saved within a PCB located inside the smart connector.
The model number, serial number, and capacity of the sensor are identified in the rectangular label
located on the sensor connector. The model and serial numbers are also identified in the Information
screen of the indicator.
1.3 Accuracy and Resolution
Indicator accuracy must be combined with sensor accuracy to determine the total accuracy of the system.
Since sensors may be used with the DFG-RS5 or DFG-RS3 indicators, the accuracy of the indicator
being used must be identified and taken into account, as follows:
Indicator Model
DFG-RS3
DFG-RS5
Accuracy
±0.2% of full scale
±0.1% of full scale
The total system accuracy can be calculated by adding the sensor accuracy and indicator accuracy.
Refer to the following examples:
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Example 1
Model RTQ50-50Z sensor with Model DFG-RS3 Indicator
RTQ50-50Z
±0.35% of full scale
+
DFG-RS3
±0.2% of full scale
=
Total
±0.55% of full scale
This translates into a fixed error of up to:
0.55% x 50 ozFin = 0.275 ozFin
Example 2
Model MR01-100 sensor with Model DFG-RS5 Indicator
RLC01-100
±0.15% of full scale
+
DFG-RS5
±0.1% of full scale
=
Total
±0.25% of full scale
This translates into a fixed error of up to:
0.25% x 100 lbF = 0.25 lbF
Because accuracy is defined as a percentage of full scale, the fixed error is possible anywhere on the
scale from 0 to the capacity. As such, this value represents an increasingly large error as percentage of
reading towards the low end of the scale. It is, therefore, recommended that a sensor is selected with
capacity as close as possible to the expected load.
The resolution may be different for some sensors depending on whether the DFG-RS5 or DFG-RS3
indicator is used. For example, a Series RLC01 force sensor will display finer resolution when connected
to a DFG-RS5 indicator than when connected to a DFG-RS3 indicator. Resolution information is shown in
the sensors’ user’s guide.
1.4 Safety / Proper Usage
Read through the following safety instructions thoroughly before using the DFG-RS3 with a sensor:
1. Note the sensor’s capacity before use and ensure that the capacity is not exceeded. Producing a
load greater than the indicated safe overload value can damage the sensor. An overload
can occur whether the sensor’s indicator is powered on or off.
2. In order to extend the life of the sensor, avoid repetitive shock and impact loading.
3. When moving the sensor to another location, never lift from the cable or strain relief. This can
cause damage to the sensor. Always lift the sensor housing itself.
4. Always ensure that load is applied axially with respect to the sensor.
5. Ensure that the sensor is kept away from water or any other electrically conductive liquids at all
times.
6. The sensor and indicator should be serviced by a trained technician only. AC power must be
disconnected and the indicator must be powered off before the housing is opened.
7. Always consider the characteristics of the sample being tested before initiating a test. A risk
assessment should be carried out beforehand to ensure that all safety measures have been
addressed and implemented.
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Model DFG-RS3 Digital Force/Torque Indicator
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8. Typical materials able to be tested include many manufactured items, such as springs, electronic
components, fasteners, caps, films, mechanical assemblies, and many others. Items that should
not be used with the sensor include potentially flammable substances or products, items that can
shatter in an unsafe manner, and any other components that can present an exceedingly
hazardous situation when acted upon by a force. Always wear eye and face protection when
testing, especially in aforementioned hazardous cases. Extra bodily protection should be worn if a
destructive failure of a test sample is possible.
9. In aforementioned hazardous situations, it is strongly recommended that a machine guarding
system be employed to protect the operator and others in the vicinity from shards or debris.
10. Sensors have threaded holes or chucks, designed for the mounting of grips, fixtures, or
attachments. If any such accessories are used, ensure they are mounted firmly to prevent a
potential safety risk to the operator and others in the vicinity. If using an accessory from a supplier
other than Omega, ensure that it is constructed of suitably rugged materials and components.
Similar precautions should be taken when mounting the sensor to a test stand, work bench, or
other piece of equipment.
2 POWER
The DFG-RS3 is powered either by an 8.4V NiMH rechargeable battery or by an AC adapter. Since these
batteries are subject to self discharge, it may be necessary to recharge the unit after a prolonged period
of storage. Plug the accompanying charger into the AC outlet and insert the charger plug into the
receptacle on the indicator (refer to the illustration below). The battery will fully charge in approximately 8
hours.
USB connector
Power input jack
Caution!
Do not use chargers or batteries other than supplied or instrument damage may occur.
If the AC adapter is plugged in, an icon appears in the lower left corner of the display, as follows:
If the AC adapter is not plugged in, battery power drainage is denoted in a five-step process:
1. When battery life is greater than 75%, the following indicator is present:
2. When battery life is between 50% and 75%, the following indicator is present:
3. When battery life is between 25% and 50%, the following indicator is present:
4. When battery life is less than 25%, the following indicator is present:
5. When battery life drops to approximately 2%, the indicator from step 4 will be flashing.
Several minutes after (timing depends on usage and whether the backlight is turned on or
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Model DFG-RS3 Digital Force/Torque Indicator
User’s Guide
off), a message appears, “BATTERY VOLTAGE TOO LOW. POWERING OFF”. A 4-tone
audio indicator will sound and the indicator will power off.
The indicator can be configured to automatically power off following a period of inactivity. Refer to the
Other Settings section for details.
If battery replacement is necessary, the battery may be accessed by loosening the two captive screws in
the rear half of the housing and separating the two halves of the housing.
3 SETUP
3.1 Connecting a sensor
Insert the connector into the receptacle in the indicator, as shown in Fig. 3.1 below. When fully inserted,
the connector will lock into place with a “click”.
Fig. 3.1
Appropriate orientation of the connector.
To release the connector, press both buttons on either side of the indicator housing to release the sensor,
as shown in Fig. 3.2 below. Pull the connector completely out of the indicator by holding the curved
aluminum section. DO NOT pull on the cable or strain relief.
Fig. 3.2
Press both buttons on either side of the indicator housing to release the connector.
3.2 Mounting to a plate
The DFG-RS3 can be mounted to a plate with four thumb screws fastened into the appropriate holes in
the rear half of the housing. Refer to the Dimensions section for detailed hole information and locations.
3.4 Installing the USB driver
If communicating via USB, install the USB driver provided on the Resource CD.
Caution!
Install the USB driver before physically connecting the indicator to a PC with the USB cable.
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Model DFG-RS3 Digital Force/Torque Indicator
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Further instructions for configuring and using the indicator’s outputs are provided in the Communications
and Outputs section.
4 HOME SCREEN AND CONTROLS
4.1 Home Screen
1
9
2
8
3
4
7
6
No.
1
Name
Measurement
direction
indicator
2
Peaks
3
Primary reading
4
Load bar
5
Units
5
Description
– indicates compression direction (for force sensors)
– indicates tension direction (for force sensors)
– indicates clockwise direction (for torque sensors)
– indicates counter-clockwise direction (for torque sensors)
These indicators are used throughout the display and menu.
The maximum measured compression/tension or clockwise/counter-clockwise
readings. These readings are reset by pressing ZERO or by powering the
indicator off and on.
The current displayed load reading. See Operating Modes section for
details. If a sensor is not plugged in, this value will be replaced by a message,
as follows: SENSOR NOT CONNECTED
Analog indicator to help identify when an overload condition is imminent. The
bar increases either to the right or to the left from the midpoint of the graph.
Increasing to the right indicates compression or clockwise load, increasing to
the left indicates tension or counter-clockwise load. If set points are enabled,
triangular markers are displayed for visual convenience. This indicator reflects
the actual load, which may not correspond to the primary reading (depends
on operating mode). The ZERO key does not reset the load bar. See
Operating Modes section for details.
The current measurement unit. Abbreviations are as follows:
Force units:
lbF – Pound-force
ozF – Ounce-force
kgF – Kilogram-force
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Model DFG-RS3 Digital Force/Torque Indicator
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gF – Gram-force
N – Newton
kN – Kilonewton
6
Mode
7
Battery / AC
adapter indicator
High / low limit
indicators
8
9
Set points
Torque units:
lbFin – Pound-inch
ozFin – Ounce-inch
kgFm – Kilogram-meter
kgFmm – Kilogram-millimeter
Nm – Newton-meter
Ncm – Newton-centimeter
Note: not all sensor models display all the above units. Refer to the capacity /
resolution table for the respective sensor series for details.
The current measurement mode. Abbreviations are as follows:
RT – Real Time
PC – Peak Compression (for force sensors)
PT – Peak Tension (for force sensors)
PCW – Peak Clockwise (for torque sensors)
PCCW – Peak Counter-clockwise (for torque sensors)
See Operating Modes section for details about each of these modes
Either the AC adapter icon or battery power icon will be shown, depending on
power conditions. Refer to the Power section for details.
Correspond to the programmed set points. Indicator definitions are as follows:
– the displayed value is greater than the upper load limit
– the displayed value is between the load limits
– the displayed value is less than the lower load limit
The programmed load limit values. Typically used for pass/fail type testing.
One, two, or no indicators may be present, depending on the configuration
shown in the Set Points menu item.
4.2 Controls
Primary
Label
ZERO
MENU
MODE
DATA
Primary Function
Powers the indicator on and off.
Press briefly to power on, press and
hold to power off. Active only when
the home screen is displayed.
Zeroes the primary reading and
peaks.
Enters the main menu.
Toggles between measurement
modes.
Transmits the current reading to an
external device via the USB port.
Secondary
Label
ENTER
(UP)
ESCAPE
(DOWN)
DIRECTION
Secondary Function
Various uses, as described in the
following sections.
Navigates up through the menu and
sub-menus .
Reverts one step backwards through
the menu hierarchy.
Navigates down through the menu
and sub-menus.
Toggles between tension and
compression (or clockwise and
counter-clockwise) directions while
configuring set points and other menu
functions.
Note: Measurement units are configured through the menu. Refer to the Changing The Units section for
details.
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4.3 Menu navigation basics
Most of the indicator’s various functions and parameters are configured through the main menu. To
access the menu press MENU. Use the UP and DOWN keys to scroll through the items. The current
selection is denoted with clear text over a dark background. Press ENTER to select a menu item, then
use UP and DOWN again to scroll through the sub-menus. Press ENTER again to select the sub-menu
item.
For parameters that may be either selected or deselected, press ENTER to toggle between selecting and
deselecting. An asterisk (*) to the left of the parameter label is used to indicate when the parameter has
been selected.
For parameters requiring the input of a numerical value, use the UP and DOWN keys to increment or
decrement the value. Press and hold either key to auto-increment at a gradually increasing rate. When
the desired value has been reached, press ENTER to save the change and revert back to the sub-menu
item, or press ESCAPE to revert back to the sub-menu item without saving. Press ESCAPE to revert one
step back in the menu hierarchy until back into normal operating mode.
Refer to the following sections for details about setting up particular functions and parameters.
Note: As described above, the Plug & TestTM smart connector retains all configuration and calibration
data for the sensor, which includes menu settings. As such, a sensor must be connected in order for
menu changes to be saved with that particular sensor. If a sensor is not connected and the MENU key is
pressed, it is possible to browse through the menu parameters and make changes, but changes will not
be saved.
5 DIGITAL FILTERS
Digital filters are provided to help smooth out the readings in situations where there is mechanical
interference in the work area or test sample. These filters utilize the moving average technique in which
consecutive readings are pushed through a buffer and the displayed reading is the average of the buffer
contents. By varying the length of the buffer, a variable smoothing effect can be achieved. The selection
of 1 will disable the filter since the average of a single value is the value itself.
To access digital filter settings, select Filters from the menu. The display appears as follows:
DIGITAL FILTERS
(1 = Fastest)
Current Reading
8
Displayed Reading
1024
Two filters are available:
Current Reading – Applies to the peak capture rate of the instrument.
Displayed Reading – Applies to the primary reading on the display.
Available settings: 1,2,4,8,16,32,64,128,256,512,1024. It is recommended to keep the current reading
filter at its lowest value for best performance, and the displayed reading filter at its highest value for best
stability.
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6 SET POINT INDICATORS
6.1 General Information
Set points are useful for tolerance checking (pass/fail). Two limits, high and low, are specified and stored
in the non-volatile memory of the instrument and the primary reading is compared to these limits.
6.2 Configuration
To configure set points, select Set Points from the menu. The screen appears as follows:
SET POINTS
Upper Disabled
* Upper Enabled
5.00 lbFin
Lower Disabled
* Lower Enabled
3.50 lbFin
Either one, two, or none of the set points may be enabled. To toggle between the tension and
compression (or clockwise and counter-clockwise) directions, press the DIRECTION key.
If two set points have been enabled, they are displayed in the upper left corner of the display. If only one
set point has been enabled, the word “OFF” appears in place of the value. If no set points have been
enabled, the upper left corner of the display will be blank.
When set points are enabled, the following indicators are shown to the left of the primary reading:
– the displayed value is greater than the upper
load limit (NO GO HIGH)
– the displayed value is between the limits (GO)
– the displayed value is less than the lower load
limit (NO GO LOW)
Note: Set point indicators reference the displayed reading, not necessarily the current live load.
7 OPERATING MODES
Caution!
In any operating mode, if the capacity of the instrument has been exceeded by more than 110%,
the display will show “OVER” to indicate an overload. A continuous audible tone will be sounded
(if beeps are enabled) until the MENU key has been pressed or the load has been reduced to a
safe level.
Three operating modes are possible with the DFG-RS3 indicator. To cycle between the modes, press
MODE while in the home screen.
7.1 Real time (RT)
The primary reading corresponds to the live measured reading.
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7.2 Peak Compression (PC) / Peak Clockwise (PCW) - for force / torque sensors, respectively
The primary reading corresponds to the peak compression or clockwise reading observed. If the actual
load decreases from the peak value, the peak will still be retained in the primary reading area of the
display. Pressing ZERO will reset the value.
7.3 Peak Tension (PT) / Peak Counter-clockwise (PCCW) – for force / torque sensors, respectively
Same as above, but for tension / counter-clockwise readings.
8 CHANGING THE UNITS
The DFG-RS3 can display several measurement units, depending on the sensor. To change the unit,
select Units from the menu. The display will list the available units, for example:
UNITS
* lbF
kgF
N
The indicator will always power on with the unit selected.
9 COMMUNICATIONS AND OUTPUTS
Communication with the DFG-RS3 is achieved through the micro USB port located along the left side of
the housing, as shown in the illustration in the Power section. Communication is possible only when the
indicator is in the main operating screen (i.e. not in a menu or configuration area).
The current reading is transmitted from the indicator when the DATA key is pressed. For continuous
output, the indicator also responds to the ASCII command ‘?’ (no quotes), terminated with a Carriage
Return character or with a Carriage Return/Line Feed combination. The indicator’s responses are always
terminated with a Carriage Return/Line Feed. Any detected errors are reported back by means of error
code *10 (illegal command).
9.1 Communication Settings
To set up communication settings, select USB Settings from the menu. The screen appears as follows:
USB SETTINGS
+ Baud Rate
+ Data Format
Communication settings are permanently set to the following:
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Model DFG-RS3 Digital Force/Torque Indicator
Data Bits:
Stop Bits:
Parity:
User’s Guide
8
1
None
Other settings are configured as follows:
9.1.1 Baud Rate
Select the baud rate as required for the application. It must be set to the same value as the receiving
device.
9.1.2 Data Format
Select the desired data format. The screen appears as follows:
*
DATA FORMAT
Numeric + Units
Numeric Only
Invert Polarity
Omit Polarity
Selection
Numeric + Units
Numeric Only
Invert Polarity
Omit Polarity
Description
Output format includes the value and unit of measure. Compression/clockwise
values have positive polarity, tension/counter-clockwise values have negative
polarity.
Output format includes the value only. Polarity same as above.
Compression/clockwise values have negative polarity, tension/counter-clockwise
values have positive polarity. May be selected in addition to the Numeric + Units /
Numeric Only selection.
Both directions are formatted with positive polarity. May be selected in addition to
the Numeric + Units / Numeric Only selection.
Individual data points may be transmitted by pressing DATA.
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10 CALIBRATION
10.1 Initial Physical Setup
The sensor should be mounted vertically to a test stand or fixture rugged enough to withstand a load
equal to the full capacity of the sensor. Certified deadweights, torque arms/wheels, and/or master load
cells should be used, along with appropriate mounting brackets and fixtures. Caution should be taken
while handling such equipment.
10.2 Calibration Procedure
In the interests of simplicity and brevity, the following instructions use force terminology only. Such
wording is displayed only when a force sensor is being calibrated. When a torque sensor is being
calibrated, the terms COMPRESSION and TENSION are replaced by CLOCKWISE and COUNTERCLOCKWISE, respectively.
1. Select Calibration from the menu. The display appears as follows:
CALIBRATION
Enter # cal points
(1 to 10)
Compression:
5
Tension:
5
The sensor can be calibrated at up to 10 points in each direction. Enter the number of calibration
points for each direction (compression and tension or clockwise and counter-clockwise). At least
one point must be selected for each direction. For single-direction sensors such as Omega’s
Series RLC02, only one direction is allowed.
Note: To achieve the accuracy specification of ±0.2% + sensor, it is recommended to calibrate
the sensor at 5 or more even increments in both the tension and compression directions. For
example, a sensor with capacity of 10 lbF should be calibrated at 2, 4, 6, 8, and 10 lbF loads in
each direction.
2. To escape the Calibration menu at any time, press ESCAPE. The display appears as follows:
CALIBRATION
NOT COMPLETE
Cancel
Exit w/o saving
Selecting “Cancel” will revert back to the Calibration setup. Selecting “Exit w/o saving” will return
to the menu without saving changes.
3. After the number of calibration points has been entered, press ENTER. The display appears as
follows:
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Model DFG-RS3 Digital Force/Torque Indicator
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CALIBRATION
OFFSET
Place sensor
horizontally, then
press ZERO.
4. Place the force sensor horizontally on a level surface free from vibration, then press ZERO. The
indicator will calculate internal offsets, and the display appears as follows:
CALIBRATION
OFFSET
Please wait…
CALIBRATION
OFFSET
CALIBRATION
OFFSET
Sensor passed
Analog passed
Sensor failed
Analog failed
If failed:
5. The following screen appears after the offsets have been calculated:
CALIBRATION
COMPRESSION
Attach necessary
weight fixtures,
then press ENTER.
Attach weight fixtures (brackets, hooks, etc), as required. Do not yet attach any weights or apply
any calibration loads. Press ENTER.
6. The display appears as follows:
CALIBRATION
COMPRESSION
Optionally exercise
sensor, then press
ENTER.
Optionally exercise the sensor several times (at full scale, if possible), then press ENTER.
7. The display appears as follows:
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Model DFG-RS3 Digital Force/Torque Indicator
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CALIBRATION
COMPRESSION
Gain adjust
Apply full scale load
10.000 lbF +/-20%,
then press ENTER.
Apply a weight equal to the full scale of the instrument, then press ENTER.
8. After displaying “Please wait…” the display appears as follows:
CALIBRATION
COMPRESSION
Ensure no load,
then press ZERO.
Remove the load applied in Step 8, leave the fixtures in place, then press ZERO.
9. The display appears as follows:
CALIBRATION
COMPRESSION
Apply load
1 OF 5
Enter load:
2.000 lbF
Press ENTER.
Use the UP and DOWN keys to adjust the load value as required. The load values default to even
increments, as indicated by the previously entered number of data points (even increments are
recommended for best results). For example, if a 50 lbF capacity sensor is calibrated, and 5 data
points were selected, the load values will default to 10, 20, 30, 40, and 50 lb. Apply the calibration
load. Then press ENTER.
Repeat the above step for the number of data points selected.
10. After all the compression calibration points have been completed, the display appears as follows:
CALIBRATION
COMPRESSION COMPLETE
Reverse direction
for tension.
Attach necessary
weight fixtures,
then press ENTER.
Press ENTER.
11. At the completion of the tension calibration, the display appears as follows:
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Model DFG-RS3 Digital Force/Torque Indicator
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CALIBRATION
COMPLETE
Save & exit
Exit w/o saving
To save the calibration information, select “Save & exit”. To exit without saving the data select
“Exit without saving”.
12. Any errors are reported by the following screens:
CALIBRATION
Units must be gF.
Please try again
Press ENTER.
Displayed at the start of calibration if a disallowed unit is selected.
CALIBRATION
Load not stable.
Please try again.
Ensure that the load is not swinging, oscillating, or vibrating in any manner. Then try again.
CALIBRATION
COMPRESSION
Load too low.
Please try again.
Causes:
1. The calibration weight does not match the set value.
2. If using a DFG-RSA configurable adapter, ensure that the output signal leads (SG+ and SG-)
have been installed into the appropriate terminal blocks. Some sensor manufacturers
consider SG+ to be a compression value, while others consider it to be a tension value. If the
indicator is expecting a compression load but it is receiving a tension signal, calibration
cannot continue. Verify that the tension/compression indicator on the home screen properly
corresponds to the load direction, and switch the signal leads, if required.
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Model DFG-RS3 Digital Force/Torque Indicator
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CALIBRATION
TENSION
Load too close
to previous.
Please try again.
The entered calibration point is too close to the previous point.
11 OTHER SETTINGS
11.1 Automatic Shutoff
The indicator may be configured to automatically power off following a period of inactivity while on battery
power. Inactivity is defined as the absence of any key presses or load changes of 100 counts or less. To
access these settings, select Automatic Shutoff from the menu. The display appears as follows:
AUTOMATIC SHUTOFF
* Disabled
Enabled
Set Minutes
5
Select Disabled to disable automatic shutoff. Select Enabled to enable it. The length of time of inactivity
is programmed in minutes via the Set Minutes parameter. Available settings: 5-30, in 5 minute
increments.
Note: If the AC adapter is plugged in, the indicator will ignore these settings and remain powered on until
the POWER key is pressed.
11.2 Backlight
There are several available initial settings (applicable upon powering on the indicator). To access these
settings, select Backlight from the menu. The display appears as follows:
BACKLIGHT
Off
On
* Auto
Set Minutes
1
Selection
Off
On
Auto
Description
Backlight to be off upon powering on the indicator.
Backlight to be on upon powering on the indicator.
Backlight to be on upon powering indicator, but will shut off after a period of inactivity
(as defined in the Automatic Shutoff sub-section). The backlight will turn on again
when activity resumes. The length of time of inactivity is programmed in minutes via the
Set Minutes parameter. Available settings: 1-10, in 1 minute increments.
Note: If the AC adapter is plugged in, the indicator will ignore these settings and keep the backlight on.
Selecting the On or Off setting in the Backlight menu will manually turn the backlight on or off.
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11.3 LCD Contrast
The contrast of the display may be adjusted. Select LCD Contrast from the menu. The screen appears
as follows:
LCD CONTRAST
Set Contrast
10
Press ENTER to modify the contrast. Select a value from 0 to 25, 25 producing the most contrast.
11.4 Tones
Audible tones can be enabled for all key presses and alerts, such as overload, set point value reached,
etc. The Set Point alert can be configured to be either a momentary tone or a continuous tone (until the
load is restored to a value between the set points). To configure the functions for which audible tones will
apply, select Tones from the menu. The screen appears as follows:
TONES
Keys
* Alerts
Set Points
* Momentary
Continuous
11.5 Initial Mode
This section is used to configure the initial mode upon powering on the indicator. To access this
parameter, select Initial Mode from the menu. The screen will display the available modes, which is
determined by whether a force or torque sensor is connected. An example is as follows:
INITIAL MODE
* Real Time
Peak Compression
Peak Tension
The default value is Real Time.
11.6 Restore Default Settings
Default factory settings can be restored by selecting Restore Defaults from the menu. The settings may
be found in the Specifications section. The screen appears as follows:
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Model DFG-RS3 Digital Force/Torque Indicator
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RESTORE DEFAULT
SETTINGS?
No
Yes
11.7 Information / Welcome Screen
The following screen is displayed at power up and can be accessed at any time by selecting Information
from the menu:
Digital Indicator
Model DFG-RS3
Ind. SN: 1234567
Sensor: RTQ50-50
Sensor SN: 9876543
Version: 1.0
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12 SPECIFICATIONS
12.1 General
Accuracy:
Sampling rate:
Power:
Battery life:
Measurement units:
±0.2% of full scale + sensor
2,000 Hz
AC or rechargeable battery. Low battery indicator appears when battery
level is low, and indicator powers off automatically when power reaches
critical stage.
Backlight on: up to 7 hours of continuous use
Backlight off: up to 24 hours of continuous use
lbF, gF, kgF, N, kN, lbFin, ozFin, kgFm, kgFmm, Nm, Ncm, (depending on
sensor)
USB output:
Safe overload:
Configurable up to 115,200 baud
150% of full scale (display shows “OVER” at 110% and above)
Weight:
0.7 lb [0.3 kg]
Carrying case, AC adapter, battery, USB cable, resource CD (USB driver
and user’s guide), certificate of conformance
Included accessories:
Environmental requirements:
40 - 100°F, max. 96% humidity, non-condensating
Warranty:
3 years (see individual statement for further details)
12.2 Factory Settings
Parameter
Set points
Upper
Lower
Filters
Current
Displayed
Backlight
Minutes
USB Output
Baud Rate
Data Format
Automatic Shutoff
Minutes
Tones
Keys
Alerts
Set Points
Initial Mode
Units
Setting
Disabled (defaults to 80% of full scale, C/CW, when enabled)
Disabled (defaults to 40% of full scale, C/CW, when enabled)
8
1024
Auto
1
9,600
Numeric + units
Enabled
5
Enabled
Enabled
Momentary
Real Time
Depends on sensor
20
Model DFG-RS3 Digital Force/Torque Indicator
User’s Guide
12.3 Dimensions
IN [MM]
21
Model DFG-RS3 Digital Force/Torque Indicator
User’s Guide
22
Model DFG-RS3 Digital Force/Torque Indicator
User’s Guide
23
M-5250/1017
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