Kaman digiVIT User Manual

Non-contact Displacement Measuring

System User’s Manual

www.kamansensors.com

TABLE OF CONTENTS

PART 1 – INTRODUCTION..........................................................................................................4

PART 2 – CONNECTIONS...........................................................................................................5

PART 3 - FRONT PANEL CONTROLS.......................................................................................6

PART 4 – MENU TREE................................................................................................................7

4.2 mA Out Setup ....................................................................................................................8

4.3 Cal Setup ...........................................................................................................................8

4.4 Linearization Options .........................................................................................................8

4.4.1 2 Pt. Cal ......................................................................................................................8

4.4.2 6 Pt. Poly Cal ..............................................................................................................9

4.4.3 21 Pt. Pcws Cal...........................................................................................................9

4.5 Temperature Compensation ..............................................................................................9

4.6 Display Setup...................................................................................................................10

4.6.1 Display Percent.........................................................................................................10

4.6.2 Display Voltage.........................................................................................................10

4.6.3 Display Current .........................................................................................................10

4.7 Advanced Setup................................................................................................................10

4.7.1 Digital Filter...............................................................................................................10

4.7.2 Sample Rate .............................................................................................................11

4.7.3 Ethernet Setup..........................................................................................................11

4.7.4 Keypad Lockout ........................................................................................................11

4.8 Adjust Output ....................................................................................................................11

4.8.1 Zero Output................................................................................................................11

4.8.2 2 Pt. Adjust................................................................................................................11

4.8.3 Clear Zero.................................................................................................................12

4.8.4 3 Pt. Adjust................................................................................................................12

PART 5 - ETHERNET OUTPUT.................................................................................................13

5.1 Default IP Address & Ports ..............................................................................................13

5.2 UDP Packet .....................................................................................................................13

5.3 Console Software.............................................................................................................14

PART 6 - CALIBRATION EXAMPLES........................................................................................15

6.1 General Information .........................................................................................................15

6.2 Calibration Fixturing.........................................................................................................16

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 2 -

6.3 2-Point Linear Calibration .................................................................................................16

6.4 6-Point Polynomial Calibration..........................................................................................17

6.5 21-Point Piecewise Calibration .........................................................................................18

6.6 2-Point Adjustment............................................................................................................19

6.7 3-Point Adjustment............................................................................................................19

6.8 Temperature Compensation (Electronics and Sensor).....................................................20

PART 7 – OTHER FEATURES...................................................................................................21

7.1 Limits & Relay..................................................................................................................21

7.2 IO bit/AUTOZERO............................................................................................................ 21

APPENDIX A: COMMAND LIST.................................................................................................22

APPENDIX B: digiVIT STANDARD PROBE OPTIONS..............................................................24

APPENDIX C: digiVIT TYPICAL SPECIFICATIONS.................................................................26

APPENDIX D: CALIBRATION EXAMPLES VIA ETHERNET INTERFACE ...............................27

APPENDIX E: DIMENSIONS......................................................................................................31

APPENDIX F: SOFTWARE LICENSE AGREEMENT................................................................32

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 3 -

PART 1 – INTRODUCTION

The Kaman digiVIT is a revolutionary inductive displacement measuring instrument. The digiVIT simplifies use of a variety of Eddy Current sensors for precision measurements of; displacement, position, vibration, run-out, etc, in typical and difficult applications. The digiVIT is user configurable and adjustable.

The digiVIT does not require any special factory setup to work with most inductive sensors. It incorporates a self tuning mechanism that optimizes set up for a given sensor, cable length, conductive target material, and range. Using the front panel controls, the digiVIT can easily be calibrated, temperature compensated, and adjusted for a variety of voltage and current output options.

Getting Started

1.1 Connect Power A +24 VDC power supply capable of supplying 0.13A is required to power digiVIT. Connect the power supply to the digiVIT terminal block pins 1 and 2 (reference Part 2 on connections).

1.2 Connect the Sensor The sensor is connected to the SMA connector. On application of power, if no sensor is connected or the digiVIT senses and open connection the message 'No Sensor' will appear on the display. If, the sensor is defective or its resistance is too low, the message 'Bad Sensor' will be displayed. If the unit was previously calibrated, the display may indicate a voltage, current or percentage depending on how the display was configured. If voltage or current was not selected, the default display is percent of full scale.

1.3 Calibrate the Sensor If factory calibration has not been performed, the sensor must be calibrated before it will function properly. Reference PART 6 on calibration examples.

1.4 Connect the Outputs Connect either the analog voltage output, current output, or use the Ethernet port over a UDP interface. For the analog voltage and current output, output ranges (i.e. 0-5V, +/-5V, 0-10V, +/10V, 0-20mA, or 4-20mA) can be selected using the front panel menu.

For fixturing of sensors and other application considerations, reference Kaman’s Inductive Technology Handbook. A copy can be downloaded free of charge from Kaman’s website:

www.kamansensors.com

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 4 -

PART 2 – CONNECTIONS

The digiVIT I/O connections are all through a 10 pin removable terminal block. The DigiVIT sensor is connected through an SMA coaxial connector on the opposite side of the enclosure. An RJ45 Ethernet connection is provided for UDP/IP communication.

Pin Name Function

1 +24V 2 Gnd Ground

3 Vout Voltage Output (0-5, +/-5, 0-10, +/-10) 4 Gnd Ground 5 Iout Curent Loop Output (0-20mA, 4-20mA) 6 Gnd Ground 7 NC No Connection 8 IO IO Bit for special functions -- standard setup for Autozero when grounded. 9 Relay Solid State Relay Connection

10 Relay Solid State Relay Connection

+24V Input @ 0.13A (must accommodate power-on surge current up to 300mA)

Table 1 Terminal Block Pin-Out

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 5 -

PART 3 - FRONT PANEL CONTROLS

The digiVIT can easily be set up using the front panel controls.

1. Sensor connection (SMA)

2. Digital display

3. Scroll up pushbutton

4. Scroll down pushbutton

5. Escape pushbutton

6. Enter pushbutton

7. Ethernet connection (RJ45)

2 3 4 5 6

8. I/O screw terminals

Figure 1 Front Panel Controls

Note: Press the Escape pushbutton (#5 in the figure above) momentarily to return to the previous menu tree branch. Press and hold the Escape pushbutton to return to the normal run mode.

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 6 -

PART 4 – MENU TREE

The menu tree for digiVIT, accessed by pushing either the Scroll Up or Scroll Down pushbuttons on the front panel, is shown below. The Scroll Up and Scroll Down pushbuttons will cycle through the options in a particular branch. To access a submenu simply scroll up or down in the main menu until the desired submenu is displayed, then push the Enter pushbutton. To leave a submenu, momentarily push the Escape pushbutton. To return to the normal run mode, depress and hold the Escape pushbutton.



Volt Out

Setup



mA Out

Setup



Cal

Setup



Display

Setup



Advanced

Setup

Adjust

Output



Return to

Run



Zero

Output



2 PT

Adjust



Clear

Zero



3 PT

Adjust



Digital

Filter



Sample

Rate



Ethernet

Setup

 Keypad Lockout



Relay Limits



Relay

Polarity



Relay Hi

Limit



Relay Lo

Limit



Relay

Hysteresis



Address



UDP Port

Writer



UDP Port

Reader



Mac

Address



5000

SPS



10000

SPS



Display

Percent



Display

Voltage



Display

Current



Linearize

Output



Temp Cmp

Sensor

 Temp Cmp Electronics



2 PT

Lin Cal



6 PT

Poly Cal



21 PT

Pcws Cal

 4-20mA Current

 0-20mA Current



0-10V

Output

 +/-10V Output



0-5V

Output



+/-5V

Output

Figure 2 Menu Tree

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 7 -

4.1 Volt Out Setup

This option allows selection of the voltage output range from the system. The actual voltage will go 1% above or below the voltage output range selected if the sensor is

above or below the calibrated range.

4.2 mA Out Setup

This option allows selection of the current output range from the system. The actual current will go 5% above or below the current output range selected if the sensor is

above or below the calibrated range. In the case of 0-20mA output, it will not go below zero.

4.3 Cal Setup

This selection allows linearization calibration and temperature compensation. With the exception of the 2 Pt. or 3 Pt. Adjust (reference 4.8) all other calibration methods will zero out the temperature compensation coefficients and any offset.

4.4 Linearization Options

3 options are available for linearization calibration, 2 point, 6 point and 21 point. Note: Performing a linearization calibration after a temperature compensation calibration will void the temperature compensation calibration. All linearization calibrations begin by locating the sensor at the maximum distance it will be from the target during operation. This is typically the sum of the offset distance and full scale range.

4.4.1 2 Pt. Cal

The 2 point calibration is useful if either linearity of the output is not a concern or if the sensor is operated over a very short range. Ranges less than 10% of the standard range (a standard range is normally 33% of the sensor diameter) typically will result in good linearity. For ranges below 5% of the standard range; this is the recommended method.

To perform a 2 Pt calibration, the sensor needs to be position at MAX distance from the sensor face (i.e. full scale) so that it can optimize for a given sensor. After that, the sensor needs to be positioned at only the offset (MIN) and full range (MAX) positions.

Note: Any previous temperature compensation calibration will be voided when a 2 Pt. calibration is performed.

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 8 -

4.4.2 6 Pt. Poly Cal

The 6 point polynomial cal fits a 5th order polynomial through the data points to linearize the sensor output. In most cases this method works very well though there can be exceptions.

The sensor needs to be position at MAX distance from the sensor face (i.e. full scale) so that it can optimize for a given sensor. After that the sensor needs to be position at offset (MIN) and then at 20%, 40%, 60%, 80%, and 100% of the range to complete the calibration.

Note: Any previous temperature compensation calibration will be voided when a 6 Pt. calibration is performed.

4.4.3 21 Pt. Pcws Cal

This calibration will result in the best performance. It is a 21 point piecewise linearization method. This option works best if the curve is too oddly shaped for a polynomial to fit well.

The sensor needs to be positioned at the MAX distance from the sensor face (i.e. full scale) so that it can optimize for a given sensor. After that, it needs to be positioned in 5% of the range increments from 0-100%.

Note: Any previous temperature compensation calibration will be voided when a 21 Pt. calibration is performed.

4.5 Temperature Compensation

The digiVIT optimizes the sensor for temperature stability and linearity using proprietary algorithms. However, even with this optimization, some residual error exists due to temperature. Temperature stability can generally be improved by a factor of 5-10 using additional steps to temperature compensate the unit. To perform temperature compensation, data from 2 different displacements with 2 different temperatures must be acquired by the unit. The actual displacement does not matter, but the recommended displacements are aproximately10% and 90% of the calibrated range. If the best temperature coefficient is desired at a particular displacement, that displacement should be chosen as one of the displacements used. The temperature compensation algorithm will have the smallest temperature error at that displacement 1 and 2 when the calibration is completed. The 4 required points are:

D1T1 (Displacement 1, Temperature 1) D1T2 (Displacement 1, Temperature 2) D2T1 (Displacement 2, Temperature 1) D2T2 (Displacement 2, Temperature 2)

The temperature compensation calibration menu controls the order of the 4 points.

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 9 -

When temperature compensation is selected, the display shows a temperature relative to when the calibration process started. It is displayed in degrees Celsius, but is not particularly accurate in terms of absolute temperature.

The first step is to go to D1T1, it does not matter if it is at the 10% or 90% point (or any point) and it does not matter what order you take the two temperature points in (rising or falling temperature). At this displacement, change the temperature of the sensor noting the output on the display. It is best to avoid transients so by heating (or cooling) the sensor it is best to wait until any transients have passed to take the data point. The unit does not care what the actual temperatures used for the calibration are and they do not have to be the same for both displacements. One method is to heat the sensor up some number of degrees, take one data point after any transients have passed, and take the second data point after it has cooled down some. After the two temperature points have been collected at displacement 1, then position the sensor at displacement 2 and take two temperature points again.

If changing the temperature resulted in slight offset and gain errors due to actual position changes, a 2 or 3 point adjustment calibration can be performed (see section 4.8.2 or 4.8.4). Temperature coefficients are not affected by a 2 point or 3 point adjustment calibration.

4.6 Display Setup

The display has several different output options:

4.6.1 Display Percent

Displays the percentage of the calibrated range where the sensor is positioned. Over and under range will show greater than 100% and less than 0% but the voltage outputs will be constrained to -1% to +101%. Current outputs are constrained to -5% to +105% (but will not go below 0mA).

4.6.2 Display Voltage

Displays the selected voltage output.

4.6.3 Display Current

Displays the selected current output.

4.7 Advanced Setup

4.7.1 Digital Filter

The display is always filtered but the analog outputs (voltage and current) are not. Resolution of these outputs can be increased using a digital filter. The time constant options (tau) will vary

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 10 -

slightly depending on the sample rate selected. If the time constant is 0.0 then no filter is used and only the analog filter and the sample rate matter. The time constant displayed is representative of how fast the system will respond to a step function. For example, a time constant of 0.8ms will get to 95% of the step within 3 time constants or 2.4ms.

4.7.2 Sample Rate

The sample rate of the system can be changed from 5,000 to 10,000 samples per second. 5,000 samples per second are adequate for most applications and is the default. 10,000 samples per second can be selected for special applications when required. At 10,000 samples per second, communication with the system over the Ethernet port could slow substantially as the processor is busy most of the time servicing the analog outputs. If analog output only is required, slower Ethernet communications should not be an issue.

4.7.3 Ethernet Setup

The Ethernet setup allows change of the IP Address and the UDP reader and writer ports for connection to the unit.

4.7.4 Keypad Lockout

To prevent unauthorized access, the keypad can be disabled. When the keypad is locked out none of the buttons on the front panel are active. To reactive the keypad press and hold the diamond and up arrow buttons until the menu reappears

4.8 Adjust Output

4.8.1 Zero Output

This will set the displayed output of the system to zero. If a unipolar voltage output is selected (0-5 or 0-10), output will be set to zero when the button is pressed. If a bipolar voltage output is selected it will reference to 50% (zero for the bipolar output voltage) when the button is pressed.

This does not reset the range, so if a range with a unipolar output at 25% is zeroed, the display may lose 25% of the output range. You can also zero the output by grounding the IO bit on the terminal block.

4.8.2 2 Pt. Adjust

The 2 point adjust makes a slight adjustment to an existing calibration. It allows for correction of installation or slight loading errors in gain and offset. For this calibration the sensor must be positioned at MIN and MAX with data taken at each point. This adjustment does not optimize the output further; it simply corrects scale and offset errors. Temperature coefficients are not changed. It will remove any offset from zeroing the sensor output.

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 11 -

4.8.3 Clear Zero

This will clear the zero offset and return to the calibrated absolute output.

4.8.4 3 Pt. Adjust

The 3 point adjust makes a slight adjustment to an existing calibration. It allows for correction of installation or slight loading errors in gain and offset. For this calibration, the sensor must be positioned at MIN, MID, and MAX with data taken at each point. This adjustment does not optimize the output further; it simply corrects scale, offset, and small linearity errors. Temperature coefficients are not changed. It will remove any offset from zeroing the sensor output. This option is used when more accuracy, but not a full calibration is required.

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 12 -

PART 5 - ETHERNET OUTPUT

The digiVIT has an Ethernet output that communicates via a UDP/IP protocol. To protect the packet it is required that any command is preceded by a sequence number and has a checksum at the end. It has a fixed IP address (which can be changed) and utilizes fixed ports (these can also be changed) for sending and receiving data.

5.1 Default IP Address & Ports

Default IP Address: 192.168.0.145 Default UDP Writer Port: 55555 Default UDP Reader Port: 55556

5.2 UDP Packet

The packet sent over the UDP port must be preceded by a sequence number and followed by a checksum. This is necessary because UDP does not guarantee arrival of the packet to the host. The format of the packet is:

$s<Payload>#CC Where the $ is the command preface and s is a sequence character from ASCII 'a' to 'z'. When

the digiVIT receives a command, it will respond with the same sequence number sent as the first character of the string. It is up to the host to determine if the packet arrived in sequence and to take any action.

The checksum is the last two characters and is preceded by the # sign indicating the checksum characters follow as the payload length is variable. It is the inverted 8 bit sum of the ASCII values in the payload including the sequence number.

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 13 -

5.3 Console Software

Console software that lets the user enter UDP commands directly is available from Kaman’s website: www.kamansensors.com

. Examples for LabWindows and Labview programs are also available. Other software that allows more extensive features is also available from Kaman. Contact a Kaman representative for more information.

The console connects directly to a PC Ethernet port (typically the second Ethernet wireless connection may have to be disabled as it may attempt to use it). It can also be connected to a hub or switch or the PC wireless port if configured. It is a simple way of executing the UDP commands.

Figure 3 Command Console Software Example

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 14 -

PART 6 - CALIBRATION EXAMPLES

6.1 General Information

There are some rules of thumb when using the digiVIT:

1) The standard range is 1/3 the diameter of the sensor against a non-ferrous target, such as aluminum.

2) The offset (closest point to sensor face) should be set at 10% of the standard sensor range.

3) The range against non-magnetic targets can typically be extended to 150% of the standard range with reduced linearity and thermal sensitivity.

4) Magnetic targets will have a range about 20% of the diameter of the sensor but performance can vary significantly depending on the material and it's processing.

5) Larger sensor diameters (>35mm) are not as affected by the target material as smaller diameter sensors and will typically work better with the magnetic targets.

6) When using magnetic targets that are moving laterally to the sensor face (i.e. rotating targets) the temperature compensation option should not be used (regardless of sensor diameter). This is due to a 'generator effect' caused by fluctuations in permeability over the surface of the target influencing the temperature measurement of the sensor.

7) For most ranges, the 6 point calibration will typically yield good to very good results while the 21 point calibration will give excellent results.

8) When the calibrated range is less than 10% of the standard range a 2 point calibration will usually yield good results. At ranges less than 5% of the standard range, a 2 point calibration is recommended.

9) All calibrations can be performed through the front panel or via a UDP command over the Ethernet interface.

10) For all calibrations, the front panel interface assumes a certain calibration order in the data points. For calibrations via the UDP interface, data can be taken in any order with the 'Done command' (C2, C6, CD, or CAM depending on the calibration type) issued when the calibration is complete.

11) Calibrations can be performed from MIN to MAX range or MAX to MIN range provided the calibration steps precede sequentially.

Calibration records for 2 point, 6 point, and 21 point calibrations can be downloaded from the Kaman website: www.kamansensors.com

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 15 -

6.2 Calibration Fixturing

A good calibration starts with good calibration fixturing and reference. While in some cases the digiVIT can be calibrated in-situ, it is typically calibrated using fixturing specially made for the purpose. Small ranges may require special measuring equipment such as laser interferometers for the best accuracy. If adequate fixturing is not available, Kaman offers a calibration service.

Figure 4 Typical Calibration Fixture

Refer to Appendix B for typical offset and range of recommended sensors.

6.3 2-Point Linear Calibration

Note: Any previous temperature compensation calibration will be voided when a 2 Pt. calibration is performed.

The 2 point calibration is the simplest calibration and assumes the inherent output from the sensor is linear. Over the first 10% of the range this is true in a general sense, however even with 5% of the range; non-linearity is typically on the order of 1% of the calibrated full scale output (though that is a pretty small absolute number typically). Over the standard full range linearity could be as large as 16%.

1) Set the sensor flush with the target and move the micrometer to the MIN (offset) position. Zero the micrometer.

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 16 -

2) Position the micrometer at the desired MAX (full scale range + offset) position.

3) Select 'Cal Setup -> Lineariz Output -> 2 Pt. Lin. Cal.'. The unit will prompt 'Goto MAX Prs Entr'. With the sensor at MAX press the <enter> button. The unit will prompt 'Scanning Pls Wait' -- this can take approximately 20 seconds. The unit is optimizing the setup for the particular sensor, range, and target. Wait for this to finish.

4) The digiVIT will prompt 'Goto MIN Prs Entr'. Position the micrometer to the MIN (offset) position and press <enter>.

5) The digiVIT will prompt 'Goto 100% Prs Entr'. Position the micrometer to the MAX position and press <enter>.

The calibration is now complete. If the output reads 100.00% (or close to it) the calibration is good. If 'Cal Error' is displayed, the digiVIT did not acquire enough analog to digital converter counts between readings and the calibration sequence must be repeated.

6.4 6-Point Polynomial Calibration

Note: Any previous temperature compensation calibration will be voided when a 6 Pt. calibration is performed.

The 6 point calibration is a relatively simple calibration that generally yields excellent results. It assumes the inherent output from the sensor will have a reasonable fit to a 5th order polynomial

-- generally a good assumption over most ranges. It will result in typical non-linearity on the order of 0.1% to 0.3%. Most of the procedure is the same as the 2 point calibration except with more data points. This calibration assumes the range is divided into 5 equal intervals. For example: a 0.5mm range will be divided into 0.5/5 = 0.1mm intervals.

1) Set the sensor flush with the target and move the micrometer to the MIN (offset) position. Zero the micrometer.

2) Position the micrometer at the desired MAX (full scale range + offset) position.

3) Select 'Cal Setup -> Lineariz Output -> 6 Pt. Poly Cal.'. The unit will prompt 'Goto MAX Prs Entr'. With the sensor at full scale press the <enter> button. The unit will prompt 'Scanning Pls Wait' -- this can take approximately 20 seconds. The unit is optimizing the setup for the particular sensor, range, and target. Wait for this to finish.

4) The digiVIT will prompt 'Goto MIN Prs Entr'. Go to the MIN position and press <enter>.

5) The digiVIT will prompt 'Goto 20% Prs Entr'. Go to the 20% (0.1mm in our example) position and press <enter>.

6) Repeat step 5 for 40%, 60%, and 80% positions

7) The digiVIT will prompt 'Goto 100% Prs Entr'. Position the micrometer to the MAX position and press <enter>.

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 17 -

6.5 21-Point Piecewise Calibration

Note: Any previous temperature compensation calibration will be voided when a 21 Pt. calibration is performed.

The 21 point calibration requires more displacement positions but is the most flexible and will calibrate to almost any curve as long as it is monotonic and there is enough output between sensor data points. If the fixturing is accurate it almost always yields excellent results. This calibration assumes nothing about the sensor output as it is a piecewise table lookup approach. It will result in typical non-linearity on the order of 0.1%. Most of the procedure is the same as the 6 point calibration except with more data points. This procedure assumes the range is divided into 20 equal intervals. For example: a 0.5mm range is divided into 0.5/20 = 0.025mm intervals.

1) Set the sensor flush with the target and move the micrometer to the MIN (offset) position. Zero the micrometer.

2) Position the sensor at the desired MAX (full scale range + offset) position.

3) Select 'Cal Setup -> Lineariz Output -> 21 Pt. Pcws Cal.'. The unit will prompt to 'Goto MAX Prs Entr'. With the sensor at full scale press the <enter> button. The unit will prompt 'Scanning Pls Wait' -- this can take approximately 20 seconds. The unit is optimizing the setup for the particular sensor, range, and target. Wait for this to finish.

4) The digiVIT will prompt 'Goto MIN Prs Entr'. Go to the MIN position and press <enter>.

5) The digiVIT will prompt 'Goto 5% Prs Entr'. Go to the 5% (0.025mm in our example) position and press <enter>.

7) Repeat step 5 for 10-95% positions.

5) The digiVIT will prompt 'Goto 100% Prs Entr'. Position the micrometer to the MAX position and press <enter>.

The calibration is now complete. If the output reads 100.00% (or close to it) the calibration is good. If 'Cal Error' displayed, the digiVIT did not acquire enough analog to digital converter counts between readings and the calibration sequence must be repeated.

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 18 -

6.6 2-Point Adjustment

Note: A 2 point adjustment does not void linearization or temperature compensation calibrations.

This procedure adjusts the calibration curve slightly for variations due to offset differences and slight target or loading differences. It is only for minor adjustments as it assumes the output curve has been affected linearly by environment differences.

1) Select 'Adjust Output -> 2 pt. Adjust' and press <enter>.

2) Position the sensor at the MIN (offset) position and press <enter>.

3) Position the sensor at the MAX (full range + offset) position and press <enter>. The adjustment is now complete. If the output reads 100.00% (or close to it) the adjustment is

good. If 'Cal Error' is displayed, the adjustment is not good, a full recalibration may be required.

6.7 3-Point Adjustment

Note: A 3 point adjustment does not void linearization or temperature compensation calibrations.

1) Select 'Adjust Output -> 3 pt. Adjust' and press <enter>.

2) Position the sensor at the MIN (offset) position and press <enter>.

3) Position the sensor at the MID (mid range or 50%) position and press <enter>.

4) Position the sensor at the MAX (full range + offset) position and press <enter>. The adjustment is now complete. If the output reads 100.00% (or close to it) the adjustment is

good. If 'Cal Error' is displayed, the adjustment is not good, a full recalibration may be required.

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 19 -

6.8 Temperature Compensation (Electronics and Sensor)

While the digiVIT optimizes the sensor output for inherent temperature stability it can be improved further by temperature compensation. The temperature of the sensor is measured and used to compensate the output based on equations in the digiVIT. Optionally the Electronics can also be temperature compensated separately from the sensors and uses a built in temperature sensor for the compensation. In either case the compensation method is the same. These equations are set by collecting data at 4 temperature points:

D1T1 -- Displacement 1, Temperature 1 D1T2 -- Displacement 1, Temperature 2 D2T1 -- Displacement 2, Temperature 1 D2T2 -- Displacement 2, Temperature 2

The digiVIT assumes that D1 is the same physical position for both T1 and T2. It does not assume that the temperature of D2T1 is the same as D1T1.

As with any calibration temperature compensation depends on good fixturing. To some degree if the fixturing is moving in temperature (due to material coefficient of thermal expansion – CTE) the same way it does in the application the digiVIT will tend to compensate for it. In many cases the digiVIT can be temperature compensated in-situ.

It is best to choose points D1 and D2 at 10% and 90% of the range (D1 could be 90% and D2 could be 10% -- does not matter). If the expected usage is in a narrower range, better results could be obtained in the important displacement band by calibrating over the narrower range.

1) Select 'Cal Setup -> Temp Cmp Sensor' from the front panel. The prompt will read 'GotoD1T1 relC 0’. At this point it expects to be at Displacement 1 Temperature 1 in a fixture. A good method is to fixture it at 90% of displacement (approximately -- it does not matter precisely) and the heat the sensor head (if cable is going to be in the hot environment it should also be included). You will see the relC x indicator rise as temperature increases and fall as it decreases. It works best to heat it up and then let it cool down just a bit before taking the first data point so that transient effects are not included. Typically if the sensor is heated until the rel C reads 10 or 12 or more that is sufficient. Let it cool down slightly to say 11 or even 9 and press <enter>.

2) The prompt will read 'GotoD1T2 relC 8'. Let it cool down until it is close to where it started though it is not necessary to let it cool down all the way. Then press the <enter> button.

3) The prompt will read 'GotoD2T1 relC 1'. Reposition the sensor in the fixturing to be at a second displacement. Typically 10% of the range is good setting. Again it is best to heat it up, let the transient go away and press the <enter> button at a rel C of 10 or 12. After the transient has gone away, press the <enter> button.

4) The prompt will read 'GotoD2T2 relC 9'. After the temperature goes down to near 1 or 2 press the <enter> button and the temperature compensation is complete.

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 20 -

PART 7 – OTHER FEATURES

7.1 Limits & Relay

The digiVIT contains a solid state relay connected to pins 9 and 10 of the terminal block. This relay has a 40 ohm closed impedance and is rated for 60V and 100mA. The relay is controlled by the limit settings and is set up as a window comparator. The hi and lo limits, polarity (NC or NO), and hysteresis are setup using the UDP commands. By default the relay will be on if the output is less than 10% or greater than 90% and off otherwise.

To set the limits and relay, the digiVIT must be connected by an Ethernet cable to a PC running console software. Reference PART 5 of this manual.

The output from the system is from 0 to 100,000 where 100,000 is 100%. The relay is setup the same way.

For example, a command of SCLL 20000 sets the low limit to 20%.

S(R)CLP x USER X = polarity Polarity SET(READ) Limit Polarity 0 = NO 1= NC S(R)CLH xxxx USER xx = Hi Limit Hi Limit SET(READ) Limit Hi (Signed Long Int)

S(R)CLL xxxxx USER xx = Lo Limit Lo Limit SET(READ) Limit LO (Signed Long Int) S(R)CLD xxxx USER xx = Hysteresis Hysteresis SET(READ) Limit Deadband (Hysteresis)

(Signed Long Int)

Table 2 Relay Commands

7.2 IO bit/AUTOZERO

The IO bit (pin 8) is set up to have the same functionality as zeroing the system from the console or the front panel menu. The system will zero the output when pin 8 is grounded and will function normally when it is open. This means if the system is setup for bipolar voltages it will go to 50% when grounded and 0% for unipolar voltage settings.

Note: this does not move the effective range of the system as it is only offsetting the output reading. If the sensor is physically at 5% of the range and is zeroed, the bipolar output setting the output will read 50% but then the linear range will then be 45% to 145%.

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 21 -

APPENDIX A: COMMAND LIST

The following are the low level commands for the user to program an interface. Many of the setup commands are read or write. The command starts with an 'S' for a write (such as SCLL

20000) or an 'R' for a read (RCLL will read back the setting). Settings are stored in non-volatile system memory.

Command Passlevel

Required

Monitor Commands

MD NONE NONE Distance Output Monitor Distance Output 100000=100%

ML NONE NONE Monitor Limit Monitor Limit 0= in range 1=low 2 = hi

MR NONE NONE Monitor Relay Monitor Relay 0= Open 1 = Closed

Parameters Returns Comments

AutoZero Function

ZZ NONE NONE -- Zeroes the output ZC NONE NONE -- Clears the zero on the output

Limit Setup

S(R)CLP x USER X = polarity Polarity SET(READ) Limit Polarity 0 = NO 1= NC

S(R)CLH xxxx USER xx = Hi Limit Hi Limit SET(READ) Limit Hi (Signed Long Int)

S(R)CLL xxxxx USER xx = Lo Limit Lo Limit SET(READ) Limit LO (Signed Long Int) S(R)CLD xxxx USER xx = Hysteresis Hysteresis

Ethernet Setup

S(R)EA xxx xxx xxx xxx USER

S(R)EW xxxxx USER xx = port UDP Writer Port SET(READ) Ethernet Writer Port

S(R)ER xxxxx USER xx = port UDP Reader SET(READ) Ethernet Reader Port

REM NONE MAC READ Ethernet MAC Address

Output Setup

S(R)UI x USER x = setting Setting

S(R)UV x USER x = setting Setting

SET(READ) Limit Deadband (Hysteresis)

(Signed Long Int)

xx xxx xxx xxx =

IP Address

SET(READ) Ethernet IP Address

Note: Separate Octets with spaces not '.'

SET(READ) User Current Output

0=0-20mA 1=4-20mA

SET(READ) User Voltage output

0=0-5V 1 =+/-5V 2=0-10V

3=+/-10V

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 22 -

Command Passlevel

Parameters Returns Comments

Required

System

RXR NONE NONE Revision Read Firmware Revision

U NONE Sets Passlevel Passlevel 0-2

MISC TIMER

WC NONE NONE Seconds Watch Clock (seconds since power on) WT NONE NONE Ticks Watch Ticks (Ticks since power on)

CALIBRATION

CS NONE NONE -- Saves the calibration and all parameters

CF NONE NONE Frequency

CZ NONE NONE --

CP x NONE X = 0-20 AD Reading

CD NONE NONE Status C6 NONE NONE Status Completes the 6 point polynomial cal

Unlocks for higher level control

U KAMAN<ret> -- unlocks to User Level

U<ret> -- sets password to normal level

Set Optimal Full Scale – Sets Frequency and

Optimal Coil Current – sensor must be positioned

at max displacement from sensor. This is the first

thing done in a calibration.

Sets Zero and sets gains and offsets (Executed

after CF) – sensor must be positioned at the

minimum displacement from sensor. This is the

second thing done in a calibration

Cal Point (0-20) for piecewise linearization – sensor must be positioned at the correct percent of full scale – i.e. 0=0%, 1=5%,2 =10% … 20=100% -

- direction (min to max or max to min) does not matter as long as it changes monotonically. For 6 point polynomial cals only use 0-5 points and they

must be spaced 20% apart ... i.e. pt 0 is 20%, pt1 is 40% ... pt 5 = 100% of range. For a 2 point cal

pt 0 = 0% pt 1 = 100%.

Completes the 21 point calibration and sets up the

tables for operation

C2 NONE NONE Status Completes the 2 point linear cal

CAZ NO NE NONE -- Cal Adjust zero point

CAM NONE NONE -- Cal Adjust mid point

CAF NO NE NONE -- Cal Adjust full scale point CAD NONE NONE Status Complete 2 Point Adjust CT 0 NONE NONE -- Collect Temp Comp Data for D1T1 CT 1 NONE NONE -- Collect Temp Comp Data for D1T2 CT 2 NONE NONE -- Collect Temp Comp Data for D2T1 CT 3 NONE NONE -- Collect Temp Comp Data for D2T2 CT 4 NONE NONE Status Completes Temperature Compensation for Sensor

CT 5 NONE NONE Status

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 23 -

Completes Temperature Compensation for

Electronics

APPENDIX B: digiVIT STANDARD PROBE OPTIONS

Although the digiVIT will work with nearly any sensor and any conductive target, the following sensors have been characterized over standard ranges with an aluminum target.

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 24 -

Characterized with an aluminum target

Offset

Short Range

Standard Range

Extended Range

Typical Specifications for stardard range, aluminum target, standard cable length

Nonlinea rity 6 pt calibration

Nonlinea rity 21 pt calibration

Static Resolution

Resolution @ 100 Hz

Resolution @ 1000 Hz

Therm al Sens itity

Therm al Sens itity w/tem p

comp calib ratio n

inch 0.002 0.005 0.010 0.016 0.020 0.032 0.050 0.100

(mm) (0. 05) (0.13) (0.25) (0.40) (0.50) (.80) (1.20) (2.50)

inch 0.010 0.025 0.050 0.080 0.100 0.160 0.250 0.300

(mm) (0. 25) (0.60) (1.25) (2.00) (2.50) (4.00) (6.00) (7.5)

inch 0.020 0.050 0.100 0.160 0.200 0.320 0.500 0.600

(mm) ('0.50) (1.30) (2.50) (4.00) (5.00) (8.00) (12.0) (15.0)

inch 0.030 0.070 0.150 0.240 0.320 0.500 0.800 1.000

(mm) (0. 75) (1.75) (3.75) (6.00) (8.00) (12.5) (20.0) (25.0)

±%FS <0.3%

±%FS <0.1% RMS%FS <0.001% RMS%FS <0.01% RMS%FS <0.02%

%FS°F 0.05

(%FS°C) (0.1)

%FS°F 0.01

(%FS°C) (0.02)

2U 4U 9U 12U 16U 26U 38U 51U

Probe Specifications

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 25 -

APPENDIX C: digiVIT TYPICAL SPECIFICATIONS

Specifications below are typical but are sensor and target dependent. Some magnetic targets may not work well with the digiVIT.

Parameter Specification Notes

Power Supply +18-28V Current will change with input

Input Current 0.13A At +24V input typical

Voltage Output 0-5V,+/-5V,0-10V,+/-10V

Current Output 0-20mA, 4-20mA

Range

Offset 10% of range

Resolution

Resolution Static 1/100000 RMS Typical

Linearity 6 pt. Cal 0.3% of Full Range Least Squares over standard range typical

Linearity 21 pt. Cal 0.1% of Full Range Least Squares over standard range typical

Targets Any conductive

Temp Co w/o temp comp 0.1%FR/oC

TempCo w/Temp comp 0.02%FR/oC Standard range/AL target

33% of sensor diameter

standard

1/3000 RMS at full

bandwidth no filtering

Voltage and current are simultaneously output, Outputs will over/under range by 1%

Ranges can vary typically from 5% of the standard range to 150% of standard range on non-magnetic targets. Magnetic targets are highly variable.

Typical

Some magnetic targets may not work well or only over a substantially reduced range

Standard range/AL target Typical sensor head only -- no cable

Standard range/AL target Typical

Electronics TempCo 0.05-0.1%/oC

Electronics Temp Range 0-50 oC

Sensor DC Resistance 0.5 to 20 ohms <0.5 ohms is 'bad sensor', >20 is 'no sensor'

Sensor Inductance 10uH to 50uH

W/Electronics Temp Comp 5x typical improvement

It has been tested with sensors in this range. It may work with sensors up to 10mH in special situations not guaranteed.

Specifications Subject to Change without Notice

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 26 -

APPENDIX D: CALIBRATION EXAMPLES VIA ETHERNET INTERFACE

Calibrations using the Ethernet interface have the same procedure as the examples in Part 6 of the manual. Data is entered using UDP commands from a PC instead of front panel controls. To perform these procedures, the digiVIT must be connected by an Ethernet cable to a PC running console software. Reference PART 5 of this manual.

Refer to Appendix B for typical offset and range of recommended sensors.

D.1 - 2 Point Linear Calibration

1) Set the sensor flush with the target and move the micrometer to the MIN (offset) position. Zero the micrometer.

2) Position the micrometer at the desired MAX (full scale range + offset) position.

3) With the sensor at full scale, type UDP command ‘CF’. The unit will prompt 'Scanning Pls Wait' -- this can take approximately 20 seconds. The unit is optimizing the setup for the particular sensor, range, and target. Wait for this to finish.

4) Position the micrometer to the MIN position (offset). Type ‘CZ’, then ‘CP 0’ to take data.

5) Position the micrometer to the MAX position. Type ‘CP 2’ to take data, then ‘C2’ to complete the calibration.

The calibration is now complete. If the calibration is good, the digiVIT will return a status of 0. A status of 1 is returned on a bad calibration and the calibration must be performed again.

D.2 - 6 Point Polynomial Calibration

Most of the procedure is the same as the 2 point calibration except with more data points. This calibration assumes the range is divided into 5 equal intervals. For example: a 0.5mm range will be divided into 0.5/5 = 0.1mm intervals.

1) Set the sensor flush with the target and move the micrometer to the MIN (offset) position. Zero the micrometer.

2) Position the micrometer at the desired MAX (full scale range + offset) position.

4) Position the micrometer to the MIN position. Type ‘CZ’, then ‘CP 0’ to take data.

5) Go to the 20% position (0.1mm in our example). Type ‘CP 1’ to take data.

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 27 -

6) Repeat step 5 for 40%, 60%, and 80% positions. Type 'CP 2', 'CP 3', 'CP 4' at these positions respectively.

7) Position the micrometer to the MAX position. Type ‘CP 6’ to take data, then ‘C6’ to complete the 6 point calibration.

The calibration is now complete. If the calibration is good, the digiVIT will return a status of 0. A status of 1 is returned on a bad calibration and the calibration must be performed again.

D.3 - 21 Point Piecewise Calibration

Most of the procedure is the same as the 6 point calibration except with more data points. This procedure assumes the range is divided into 20 equal intervals. For example: a 0.5mm range is divided into 0.5/20 = 0.025mm intervals.

1) Set the sensor flush with the target and move the micrometer to the MIN (offset) position. Zero the micrometer.

2) Position the micrometer at the desired MAX (full scale range + offset).

4) Position the micrometer to the MIN (offset) position. Type ‘CZ’, then ‘CP 0’ to take data.

5) Go to the 5% (0.025mm in our example) position. Type ‘CP 1’ to take data.

6) Repeat step 5 for 10-95% positions. Type 'CP 2', 'CP 3', 'CP 4' … ‘CP19’ at these positions respectively.

7) Position the micrometer to the MAX position. Type ‘CP 20’ to take data, then ‘CD’ to complete the 21 point calibration.

The calibration is now complete. If the calibration is good, the digiVIT will return a status of 0. A status of 1 is returned on a bad calibration and the calibration must be performed again.

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 28 -

D.4 - 2 Point Adjustment

1) Position the sensor at the MIN (offset) position and type ‘CAZ’.

2) Position the sensor at the MAX (full range + offset) position and type ‘CAF’ to take data, then ‘CAD’ to complete the adjustment.

The adjustment is now complete. If the calibration is good, the digiVIT will return a status of 0. A status of 1 is returned on a bad adjustment. If the adjustment is not good, a full recalibration may be required.

D.5 - 3 Point Adjustment

1) Position the sensor at the MIN (offset) position and type ‘CAZ’.

2) Position the sensor at the MID (mid range or 50%) position and type ‘CAM’

3) Position the sensor at the MAX (full range + offset) position and type ‘CAF’ to take data, then ‘CAD’ to complete the adjustment.

D.6 - Temperature Compensation (Electronics and Sensor)

D1T1 -- Displacement 1, Temperature 1 D1T2 -- Displacement 1, Temperature 2 D2T1 -- Displacement 2, Temperature 1 D2T2 -- Displacement 2, Temperature 2

The digiVIT assumes that D1 is the same physical position for both T1 and T2. It does not assume that the temperature of D2T1 is the same as D1T1.

As with any calibration, temperature compensation depends on good fixturing. To some degree if the fixturing is moving in temperature (due to material coefficient of thermal expansion – CTE) the same way it does in the application, the digiVIT will tend to compensate for it. In many cases the digiVIT can be temperature compensated in-situ.

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 29 -

2) The prompt will read 'GotoD1T2 relC 8'. Let it cool down until it is close to where it started though it is not necessary to let it cool down all the way. Then type ‘CT 1’.

3) The prompt will read 'GotoD2T1 relC 1'. Reposition the sensor in the fixturing to be at a second displacement. Typically 10% of the range is good setting. Again it is best to heat it up, let the transient go away and press the enter button at a rel C of 10 or 12. After the transient has gone away, type ‘CT 2’.

4) The prompt will read 'GotoD2T2 relC 9'. After the temperature goes down to near 1 or 2 press

sensor. Or, type ‘CT 5’ to complete this procedure if the compensation is for the electronics. A 0 is returned on a good and a 1 is returned on a bad temperature compensation. A full

recalibration may be required on a bad calibration.

type ‘CT 3’. Type ‘CT 4’ to complete this procedure if the compensation is for the

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 30 -

APPENDIX E: DIMENSIONS

Dimensions in inches (mm).

DigiVIT can be either DIN rail mounted or screw mounted with the mounting tabs (included).

DigiVIT with Mounting tabs

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 31 -

APPENDIX F: SOFTWARE LICENSE AGREEMENT

THIS IS A LEGAL AGREEMENT

BY USING THIS SOFTWARE YOU ACCEPT THIS LICENSE AGREEMENT AND

WARRANTY AND

YOU AGREE TO THESE TERMS AND CONDITIONS.

PLEASE READ CAREFULLY - DO NOT DISCARD

LICENSE

. This is a license agreement between you and Kaman Precision Products ("Kaman"). Kaman grants you the non-exclusive right to use the enclosed Kaman software program ("SOFTWARE") on any computer and there is no restriction on the number of computers the software can be installed on

protected by United States copyright laws and international treaty provisions. You may make as many copies of the SOFTWARE for backup or archival purposes as desired, as long as the copyright and proprietary notices in this license are included in the copy. You may not reverse engineer, decompile, disassemble, or create derivative works from the software.

. The SOFTWARE is owned by Kaman or its suppliers and is

TERMINATION OF LICENSE.

SOFTWARE together with any backup copy. This license will also terminate if you fail to comply with any term or condition of this Agreement. You agree upon such termination to destroy the SOFTWARE together with any backup copy of the SOFTWARE.

You may terminate this license by destroying the

LIMITED WARRANTY.

requirements, that operation of the SOFTWARE will be uninterrupted or error-free, or that all SOFTWARE errors will be corrected. Kaman is not responsible for problems caused by changes in the operating characteristics of computer hardware or computer operating systems which are made after the release of the SOFTWARE nor for problems in the interaction of the SOFTWARE with non-Kaman software. Kaman will have no responsibility to replace or refund the license fee of media damaged by accident, abuse, or misapplication.

THE ABOVE WARRANTIES ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANT ABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. NO ORAL OR WRITTEN INFORMATION OR ADVICE GIVEN BY EDI, ITS EMPLOYEES, DISTRIBUTORS, OR AGENTS SHALL INCREASE THE SCOPE OF THE ABOVE WARRANTIES OR CREATE ANY NEW WARRANTIES. SOME STATES DO NOT ALLOW THE EXCLUSION OF IMPLIED WARRANTIES, SO THE ABOVE EXCLUSION MAY NOT APPLY TO YOU. IN THAT EVEN T, ANY IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THIRTY (30) DAYS FROM THE DATE OF SHIPMENT OF THE SOFTWARE.

Kaman does not warrant that the SOFTWARE will meet your

LIMITATION OF REMEDIES.

SPECIAL, CONSEQUENTIAL, INDIRECT OR SIMILAR DAMAGES, INCLUDING ANY LOST PROFITS OR LOST DATA ARISING OUT OF THE USE OR INABILITY TO USE THE

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

IN NO EVENT WILL KAMAN BE LIABLE TO YOU FOR ANY

- 32 -

SOFTWARE OR ANY DATA SUPPLIED THEREWITH EVEN IF KAMAN OR A NYONE ELSE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR FOR ANY CLAIM BY ANY OTHER PARTY. IN NO CASE SHALL KAMA N'S LIABILITY EXCEED THE PURCHASE PRICE FOR THE SOFTWARE

GOVERNMENT LICENSEE.

agency of the United States Government, the following provisions apply: The Government acknowledges KAMAN's representation that the SOFTWARE and its documentation were developed at private expense and no part thereof is in the public domain.

The Government acknowledges Kaman’s representation that the SOFTWARE is "Restricted Computer Software" as that term is defined in Clause 52.227-19 of the Federal Acquisition Regulations (FAR) and is "Commercial Computer Software" as that term is defined in Subpart 227.471 of the Department of Defense Federal Acquisition Supplement (DFARS). The Government agrees that: (i) if the SOFTWARE is supplied to the Department of Defense (DOD), the SOFTWARE is classified as "Commercial Computer Software" and the Government is acquiring only "restricted rights" in the SOFTWARE and its documentation as that term is defined in Clause 252.227-7013(c)(1) of the DFARS and (ii) if the SOFTWARE is supplied to any unit or agency of the United States Government other than DOD, the Government's rights in the SOFTWARE and its documentation will be as defined in Clause 52.227-19(c)(2) of the FAR.

If you are acquiring the SOFTWARE on behalf of any unit or

EXPORT LAW ASSURANCES.

subject to restrictions and controls imposed by the United States Export Administration Act (the "Act") and the regulations hereunder. You agree and certify that neither the SOFTWARE nor any direct product thereof is being or will be acquired, shipped, transferred or re-exported, directly or indirectly, into any country prohibited by the Act and the regulations hereunder or will be used for any purposes prohibited by the same.

GENERAL.

you have any questions concerning this agreement, or if you desire to contact Kaman for any reason, please write: Kaman Precision Products, 217 Smith Street, Middletown, CT 06457.

This agreement will be governed by the laws of the State of Connecticut. Should

You acknowledge and agree that the SOFTWARE is

www.kamansensors.com PART NO: 860525-001 Last Revised 9/16/2013

- 33 -

Kaman digiVIT User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual