Related Manuals for Omega Engineering High Speed Load Cell Interface Card LCIC-WIM-BEN
Summary of Contents for Omega Engineering High Speed Load Cell Interface Card LCIC-WIM-BEN
- Page 1 User’ s Guide Shop online at omega.com e-mail: info@omega.com For latest product manuals: omegamanual.info LCIC-WIM-BEN High Speed Load Cell Interface Card...
- Page 2 OMEGAnet ® Online Service omega.com Servicing North America: U.S.A.: One Omega Drive, P.O. Box 4047 ISO 9001 Certified Stamford, CT 06907-0047 TEL: (203) 359-1660 FAX: (203) 359-7700 e-mail: info@omega.com Canada: 976 Bergar Laval (Quebec) H7L 5A1, Canada TEL: (514) 856-6928 FAX: (514) 856-6886 e-mail: info@omega.ca For immediate technical or application assistance:...
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Page 3: Table Of Contents
Table of Contents Introduction General Description Typical Applications Installing the board in the PC Utilities Setup & Running The Calibration Utility 3.2.1 General 3.2.2 The Calibrations Library 3.2.3 Parameters 3.2.4 Calibration Efficiency (CE) The Settings Utility 3.3.1 The Menu Bar 3.3.1.1 Tools / Analog Output 3.3.1.2... - Page 4 Programming your Application Commands Parameters LCIC-WIM ActiveX 4.3.1 Start/Stop Communication 4.3.2 Variables 4.3.3 Filters 4.3.4 Fast Mode 4.3.5 Misc.
- Page 5 Appendices I/O & the LED Display General Notes about the I/O Connecting External Devices to the Inputs LCIC-WIM I/O & Analog Out The LED Display Scaling the Load Cell Input Load Cell Connections USB, RS232 & RS485 Communication Parameters Baud Rate General RS232 Terminal Serial Communication &...
- Page 6 Dimensions (mm) Misc. Trouble-shooting Card does not respond after PC power-on Zero & Tare The Zero function The Auto-Tare function...
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Page 7: Introduction
1. Introduction 1.1 General Description The model LCIC-WIM is a very High Speed, Intelligent Load Cell Interface Card with USB/RS232/RS485. Besides its basic mode – named below as the general mode – the board includes an integral Fill Mode supplying an independent filling control. The board is intelligent and powerful enough for OEM customers –... -
Page 8: Installing The Board In The Pc
2. Installing the board in the PC (The following description refers to Windows XP. Obviously, on another operating system it might be different.) 1. Make sure that all installation files have been copied to your hard disk to a new folder, say, LCIC-WIM. 2. - Page 9 4. Select the second option, click ‘Next’ and browse to the “FTDI - VCP (Virtual COM Port) Driver” folder (under the folder where you copied the installation files in step 1). Click ‘Next’.
- Page 10 5. After a while, you’ll have this display: Click ‘Finish’. Notes 1. It might occur that the wizard will return to step 3, requiring to repeat the process. This is normal, just repeat steps 3-5. 2. You may watch the new driver in ‘Add/Remove programs’:...
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Page 11: Utilities
3. Utilities 3.1 Setup & Running 1. Run the setup(s) of the LCIC-WIM utilities in the folders: * LCIC-WIM-CALIBRATION * LCIC-WIM-SETTINGS 2. Run a utility: * If the utility reports that .Net Framework is not installed, then run "dotnetfxV1.1.4322.exe" in the "Microsoft Net Framework"... -
Page 12: The Calibration Utility
3.2 The Calibration Utility 3.2.1 General The calibration utility (LCIC-WIM-CALIBRATION) enables to calibrate the LCIC-WIM board adjusting it to your own system. The utility is straightforward and is in the form of a Windows wizard. It includes three main stages carried out in five steps. The three stages are: 1. - Page 13 The five calibration steps are: Step 1 – Show Data This step introduces both the parameters and the current readings, as received from the board. The step is passive in the sense that it only shows data passed by the board, but it does not make any change in the board.
- Page 14 Step 2 – Pseudo Calibration / Parameters This step starts the calibration procedure. It enables to change calibration parameters. Whether you changed the parameters or not, you may proceed to the next step by pressing the ‘Next’ button. Library issues: 1.
- Page 15 Step 3 – Pseudo Calibration / Zero This step enables to redefine the ‘zero’ level. Click ‘Skip’ if you are satisfied with the previous definition of the ‘zero’ level. Otherwise, when the scale is empty and stable (see note), click ‘Zero’ to sample another ‘zero’...
- Page 16 Step 4 – Pseudo Calibration / Weight This step enables to redefine the ‘weight’ level. Click ‘Skip’ if the previous ‘weight’ level was OK. Even if there was a fixed shift in the weight (which you probably corrected in step 3), you don’t have to redefine the ‘weight’...
- Page 17 Step 5 – Save or Quit This is the final step – here you decide whether to confirm the pseudo calibration, or leave it out. Before you decide, you may watch the current readings examining whether they are satisfactory. • In case you do want to confirm the new (pseudo) calibration (overwriting the previous calibration), press the ‘Save to Board’...
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Page 18: The Calibrations Library
3.2.2 The Calibrations Library Each calibration that the user applies may be saved in the ‘Calibrations Library’. Later on, the user may use that library as a short cut in order to restore a previous calibration quickly and reliably. The procedure is very simple: Save Unless the ‘Save to Library’... -
Page 19: Parameters
3.2.3 Parameters Parameter #1: Load Cell mV/V The mV/V output of your load cell: 1, 2 or 3 mV/V. In case the actual output is none of these values: choosing a value higher than the actual will result in loss of resolution;... -
Page 20: Calibration Efficiency (Ce)
3.2.4 Calibration Efficiency (CE) The potential range of A/D points is between 0 and near ±8,400,000. The 'Calibration Efficiency' specifies what portion of this potential range is in use. The closer it is to 100%, the better accuracy / stability you have. However, in practice , 100% is a theoretical number and almost not reachable . -
Page 21: The Settings Utility
3.3 The Settings Utility The LCIC-WIM-SETTINGS utility gives control to card’s filters, analog output, fill mode parameters and more. The utility has three items: • The Menu Bar • Current Weight Display • Parameters The ‘Current Weight Display’ is rather obvious – it continuously shows the actual weight. - Page 22 3.3.1.1 Tools / Analog Output The ‘Settings’ utility gives access to the analog output mechanism: Click ‘Tools’ / ‘Analog Output’. For ‘manual’ mode uncheck the ‘Activate Auto Mode’ box. For ‘auto’ mode check the ‘Activate Auto Mode’ box. Manual Mode On the top of the display, specify a desired voltage in the ‘Manual Mode’...
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Page 23: Tools / Baud Rate For Sci Port
3.3.1.2 Tools / Baud Rate for SCI port Click ‘Tools’ / ‘Baud Rate for SCI port’ to see the current baud rate for the RS232/RS485 serial port. It may be changed to some values between 19,200 and 115,200. (The baud rate for the USB need not be defined – usually it is 921,600.) The change will take effect only after card reset. -
Page 24: Tools / General Setpoints
3.3.1.3 Tools / General Setpoints The LCIC-WIM board has four digital outputs. Each of them may be defined – through the Tools / General Setpoints – either as a manual output, or as a general setpoint output: • A manual output is controlled by a user’s command sent from the PC (or another computer). -
Page 25: Parameters
3.3.2 Parameters The following sections describe the various parameters. After changing parameter(s), click the ‘Save to Board’ button and wait a while until the new value(s) are accepted by the board. 3.3.2.1 Communication The Communication box refers to card’s communication port – either serial or USB. -
Page 26: Get Results Immediately
3.3.2.1.4 Get results immediately Controls card’s response in communication during a special mode, such as the Fill mode: When checked, the card assumes that the PC (or another remote computer) is continuously connected and listening to the communication port. Therefore, the card takes the initiative and sends messages to the PC, reporting the process results immediately when they are available. -
Page 27: Auto Zero
3.3.2.2 Auto Zero The ‘Auto Zero’ optional feature supplies an automatic correction to creeps in the zero level during a special mode (such as the fill-mode or the WIM-mode), caused by dust, temperature etc. When this feature is activated and the card is inside the special mode, the board automatically clears the gross weight if some pre-defined condition is satisfied: All readings within some ‘continuous duration’... -
Page 28: Start Fill-Mode
3.3.2.3 Start Fill-mode 3.3.2.3.1 Fill-mode starts automatically upon card reset When this option is activated (checked), the card starts automatically the Fill-mode upon reset. Otherwise (the option is unchecked), the cards ‘awakes’ in the upper level, referred to in this document as the ‘general mode’. -
Page 29: Filtering
3.3.2.4 Filtering Board’s digital filtering is used to "smooth" the read samplings by averaging a pre-set number of the internal readings. It's especially essential on a noisy environment, as this mechanism reduces system's susceptibility to short interferences. The 'noise' may be either mechanical (e.g., load cell vibrations), or electrical. - Page 30 4. Programming your Application The control of the board is by commands and parameters, described below. You may either use them directly (see also section D.3), or call an ActiveX (see section 4.3) that does the work. 4.1 Commands _ <c/r> signifies a carriage return. Single character commands (where no <c/r>...
- Page 31 c. Get a single reading of: weight, A/D or temperature: > < d. Analog output: Read & write voltage: vx<c/r> The analog output voltage is measured at pin 12 of CONN6 (lower case v) e. Digital Outputs: Write outputs: f. Digital Outputs: Read outputs: Card returns a string of the form ‘xxxx<c/r>’, where either “1”...
- Page 32 h. RS485: Address selection, setting & reading (for more details and examples refer to section D.5; except ‘Nx<c/r>’, these commands are available also in the fill mode): Activate the board addressed x. Notes 1. Wait 10 ms after sending the colon (‘:’) before :x<c/r>...
- Page 33 Manually zero the gross weight. The effect of this function is temporary — it expires upon card reset. z (lower case z) Response (versions 1.12, 3.09, 6.01, 7.00 and up): ‘z’<c/r>. Z (Upper case Z) Cancel the manual zero operation (the lower case ‘z’). (versions 1.12, 3.09, That is, return to the original calibration zero.
- Page 34 Summary of Weight & A/D Reading Commands Resolution Single Reading > < Fast Mode Reading Type Weight Rounded Rounded Filtering Level Filter1 Filter2...
- Page 35 4.2 Parameters Parameter number Resolution Index is actually the index to an array of 18 E.g., if Resolution Index=8, then system resolution = So, 10107 <= Calibration Date <= 123199. How many internal adc updates (52734 Hz) there are between auto transmissions. This gives a theoretical reading rate from 17578 per sec to 1 per sec.
- Page 36 Becomes effective only after a system reset (either power off/on or using the ‘S’ command). Becomes effective only after a system reset (either power off/on or using the ‘S’ command). Becomes effective only after a system reset (either power off/on or using the ‘S’ command). Becomes effective only after a system reset (either power off/on or using the ‘S’...
- Page 37 (Organised 3 characters per location; in case the 1024-1034 length is less than 32, the last character is followed by 1053 1054 1055 1059 Analog Output Mode (0 = Manual, 1 = Auto) (Organised 3 characters per location, in case the 1066-1069 length is less than 12, the last character is followed by Calibration Name (32 characters max.)
- Page 38 4.3 LCIC-WIM ActiveX Unless otherwise specified, a function returns a Boolean: True for success, or False for failure. 4.3.1 Start/Stop Communication Is_LCIC_WIM_Port(CommPortNumber) Returns: 0 if the port does not respond. 1 if the port responds but not as an LCIC-WIM. 2 if the port responds as an LCIC-WIM.
- Page 39 4.3.2 Variables The system has variables with which the user may adjust the system to his needs and communicate with the I/O. Actually these variables consist of parameters, inputs and outputs. A variable may be read and sometimes also may be written. The table below lists the variables, describes them and specifies which of them may be also written.
- Page 40 Category Variable Name Calibration_Name Calibration_Date Calibration_Time Unit Calibration Resolution Info Full_Capacity Maximum_Load Load_Cell_Output Filter1 Filter2 Filtering Decimator Variables Table Description Name of calibration Calibration date (MMDDYY). Calibration time (HHMM, e.g., 1545). Weighing unit: ton, kg, g, lb or oz. Weighing resolution: 0.0001, 0.0002, 0.0005, 0.001, 0.002, 0.005, 0.01, 0.02, 0.05,...
- Page 41 Variables Table (cont’d) Category Variable Name Weight_Native Weight_Rounded Analog Inputs A2D_F1 A2D_F2 Temperature Output_1_Mode Output_2_Mode Output_3_Mode Output_4_Mode Output_1_Status Output_2_Status Digital Outputs Output_3_Status Output_4_Status Output_A_Status Setpoint_1 Setpoint_2 General Setpoint_3 Setpoints Setpoint_4 Description Current weight after Filter2, not rounded. Current weight after Filter2, rounded to resolution.
- Page 42 Variables Table (cont’d) Category Variable Name Analog_Output_M Analog_Output_ Analog Level Output (The analog output voltage is Auto_Hi_Voltage measured at pin 12 of CONN6 with respect to pin 13 which Auto_Lo_Weight is ground.) Auto_Hi_Weight Input_1_Status Input_2_Status Input_3_Status Input_4_Status Digital Input_A_Status Inputs Toggling_Counter Description 0 = Manual, 1 = Auto.
- Page 43 Variables Table (cont’d) Category Variable Name Fast Mode FM_Updates Version_ID Misc. Serial_Number Description FM_Updates = Each how many internal updates there will be a Fast Mode transmission (3 – 52,734, integer). The frequency of the internal updates is 52,734 Hz. So, the theoretical reading rate is from 17578 per sec to 1 per sec.
- Page 44 4.3.3 Filters Set_Filtering(Filter1, Filter2, Decimator) Filter1 (Integer): 2 – 256 or 0. Filter2 (Integer): 2 – 256 or 0. Decimator (long): 1 – 1000 or 0. (Refer to the ‘Filtering’ square in the variables table above.) Set_Filtering supplies a faster way to change the filtering parameters when more that one of them has to be changed, as the change operation causes board reset which is time consuming;...
- Page 45 4.3.4 Fast Mode (The Fast Mode is not available with RS485.) During the Fast Mode there is auto high speed transmission of weight readings to the communication. About the transmission rate, refer to the ‘Fast Mode’ square in the variables table above. At the end, a ‘timer stamp’...
- Page 46 The mechanism to receive the data uses events and methods as described below: The transmission sends blocks of information. Stage 1 Except the last one, each block generates the event DataArrivalInFastMode. When the event occurs, run the method Get_CurrentBlock to read the current block. The block consists of integer weights separated by a Carriage Return.
- Page 47 How to work with the Fast Mode in VB using the ActiveX During the Fast Mode process the board transmits mass data to the PC. Therefore, in order to avoid data loss, all the actions on your PC should be minimized. 1.
- Page 48 Interpreting the data in a block : Each block includes integer weight values separated by a c/r. In order to get the real weight values, the integer values should be multiplied by the current Resolution Factor (for details refer to the end of stage 3, above). You may get the current Resolution Factor using the method: LCICwim_commands1.Get_Resolution_Factor 4.3.5 Misc.
- Page 49 Appendix A: I/O & the LED Display A.1 General Notes about the I/O * The digital I/O is available on CONN6 (15 pin Dsub). * Digital Outputs The outputs are opto-isolated 300mA 50V solid state relays. When activated (status LED is on), they switch the OUTPUT x (x=1,2,3, or 4) to I/O VOLTAGE OV.
- Page 50 * Connections The following table shows the I/O pinout: Function Output 1 Output 2 Output 3 Output 4 Input 1 Input 2 Input 3 Input 4 I/O Voltage 0V Analog Out Signal Analog Out Gnd I/O Voltage+ (10 to 30V)
- Page 51 A.2 Connecting External Devices to the Inputs...
- Page 52 A.3 LCIC-WIM I/O & Analog Out...
- Page 53 A.4 The LED Display Upon board restart, the two following messages are shown on the LED display – each for a while: LCIC x.xx x.xx is board’s DSP version. is current board’s Serial baud-rate (refer to sections 3.3.1.2 & D.2). Then the display shows the current data.
- Page 54 Appendix B: Scaling the Load Cell Input The full scale of the input coming from the load cell may be adjusted by the LK4 jumper (which is next to load cell connector): • Across the two leftmost pins (default): Load cell output is 1-2mV/V. •...
- Page 55 Appendix C: Load Cell Connections...
- Page 56 Appendix D: USB, RS232 & RS485 In addition to USB, The LCIC has an option for both full-duplex RS232 and half-duplex RS485 interfaces. These are brought out on CONN3, a 9 way ‘D’ type connector. The pin-out is as follows: FUNCTION CONN3 PIN RS485-...
- Page 57 D.2 Baud Rate For the USB, the maximal baud rate is 921,600. The board responds well without a need to pre-define the used b/r. For serial communication, the required b/r should be pre-defined by the user via the Settings utility (section 3.3). The available baud rates are between 19,200 and 115,200.
- Page 58 D.5 RS485 Up to 64 LCIC-WIM boards may be connected to one PC port. In the PC side, use a converter either from the RS232 port, or from the USB port (that is, RS232 to RS485 converter, or USB to RS485 converter).
- Page 59 RS485 Commands Except ‘Nx<c/r>’ (paragraph d), these commands are available also in the fill mode. a. Activate address (x=1, 2, 3, …, 62, 63, 64): :x<c/r> Board(s) response: 1. If address is already active : !x<c/r> (The board reports that it is already active and has nothing to do.) 2.
- Page 60 Notes 1. Wait 10 ms after sending the colon (‘:’) before sending the rest of the command (‘x<c/r>’). 2. Wait 30 ms after sending the ‘:x<c/r>’ command before analyzing the response(s). 3. There might be four cases with the conditions of 2.1 & 2.2: #1: Both conditions are true: Both responses will be transmitted –...
- Page 61 b. Hello: :999<c/r> The ‘hello’ command is like a ‘who is alive?’ question. This is useful in order to detect which addresses exist in the system. Each existing board, whether active or not, responds ‘*x<c/r>’, where is its address. Notes 1.
- Page 62 c. Read the RS485 address of the active board: Board’s response: ’#x<c/r>’, where is the address of the active board. x=0 means that the board has been configured as a non-RS485 device. Other value (between 1 & 64) specifies the RS485 address of the active board.
- Page 63 RS485 Responses (Most responses are already described in the ‘Commands’ section.) !x<c/r> Address ^x<c/r> Becoming inactive on behalf of address x. See Commands/a/2.1. Ax<c/r> Address *x<c/r> Address ?x<c/r> A ‘:x<c/r>’ command was received but That is, #x<c/r> Address is already active. See Commands/a/1. becomes active.
- Page 64 Examples Suppose there are 3 boards in the system, addressed 1, 2 & 3. (The blue text is the PC side, the board(s), and the black text is our comments) Example #1: Everything goes fine :999 (no response as no board is active) Board #1 becomes active Responded by board #1.
- Page 65 So far everything was smooth; however, the quality of the communication depends – besides the board and the PC – also on the environment. Hence, there might be irregular situations that the user should know to handle – this is what the following two examples (#2 and #3) explain. Example #2: No response from the new board Board #1 becomes inactive in favor of board #2 But the ‘A2’...
- Page 66 Example #3: No response from the old board Board #2 becomes active But the ‘^2’ response, telling that board #1 became inactive, did not arrive! Where is the disorder? Maybe board #1 did receive the command and is indeed inactive, just the ‘^2’ response was lost, and everything is OK (case #1);...
- Page 67 Board selection by the supplied utilities The three supplied utilities – LCIC-WIM-CALIBRATION, LCIC-WIM- SETTINGS & LCIC-WIM-MONITOR – enable easy selection of the required board: • Upon program start, all detected addresses are reported. Verify that the total number of boards detected (reported at the bottom of the display) corresponds the real number.
- Page 68 Appendix E: Fill Mode E.1 Introduction The LCIC-WIM supplies a Fill Mode in which it may control a filling operation, using the hardware inputs (section E.2) and hardware outputs (section E.3). The character of the filling operation is determined by parameters (section E.4) set via the Settings utility (section 3.3).
- Page 69 E.2 Hardware Inputs Input #1 Input #2 OFF = ON = Turn output #1 on Manual ON = Auto ON = Start The Special Mode In this mode: * ‘SP’ flashes on the left side of the LED display. * The three setpoints are shown, in turn, on the LED display. In this state (while input #3 is still on) you have two options: 1.
- Page 70 E.3 Hardware Outputs Output #1 Option #1 Fast Valve Option #2 Fast Valve = Output #1 + Output #2 Slow Valve = Output #2 only (About Options #1 Option #2 in section E.4.3) Output #2 Output #3 Slow Valve refer to ‘Fast Speed Config’ Output #4 Filling Complete...
- Page 71 E.4 Filling Parameters Notes 1. There is a set of three setpoints. Once they are specified (using the Settings utility), the user may switch to another setpoint without needing a PC . This gives more flexibility when several setpoints are needed. For details about the switching procedure refer to section E.2.
- Page 72 Auto Correction & Averaging last fillings When ‘Auto Correction’ is checked, the board tries to correct the filling amount, based on the results of the last E.4.1.2 Auto Tare Activate • When not checked, the Setpoint defines the requested final gross weight.
- Page 73 E.4.1.3 Valid Results Limits The resulting filling weight should normally be inside a user pre-defined ‘valid range’. In case the weight exceeds that range, an error situation will occur. Specify ‘Valid Limits (±)’= 0 if you don’t need this check. Start from filling # …...
- Page 74 E.4.1.4 Stabilization Criterion (Tare & Stop) At the beginning and at the end of a filling cycle the board waits for the scale to stabilize in order to read its weight. Hence, some stability criterion is required. The board requires that all readings within ‘Delta Time’ will be inside a range whose width is ‘Delta Weight’, both at the beginning (Tare) and at the end (Stop) of the filling cycle.
- Page 75 E.4.2 Filling By = Time E.4.2.1 Filling by Time Parameters Setpoint The required total filling time when the user selects setpoint #x (x = 1, 2 or 3). Slow Amount The required slow filling time, in % of the current Setpoint (a tip shows the value of Slow Amount in ms).
- Page 76 E.4.4 The Filling Configurations Library There is a ‘Filling Configurations Library’ in which you may save sets of filling configuration parameters. This is useful in case you have more than one type of filling, letting you switch easily and reliably from one configuration to another.
- Page 77 E.5 LED Display Notations In Fill-mode, the LED display shows the current sub-mode: m Fill Manual Fill-mode (input #1 is off) AutoFill Auto Fill-mode (input #1 is on) Likewise, the value shown on the LED display is prefixed by one or two letters: Current weight Weight during a filling cycle...
- Page 78 E.6 Commands Enter & Exit Fill Mode Enter Fill Mode (from General Mode) Exit Fill Mode (to General Mode) (small ‘x’) Inside the Fill Mode Start filling (‘g’ stands for ‘go’) (like input #2 does). Terminate an error status (like input #3 does). Emergency stop (like input #4 does).
- Page 79 Get current status (small ‘s’) Response Example: Current_Status: W= 17.14 Tr= 6.65 Cv= 0.00 M=F A=I S= 0 Legend: Current (gross) weight=17.14, Last Tare=6.65, Next Correction Value=0.00, Mode=Fill mode, Activity= I dle (or: T are, F ast, S low) System staus=0 (0 is normal, otherwise it’s an error code). Get parameters list (small ‘p’).
- Page 80 E.7 Error Codes Actual Filling Weight < Low Limit of 'Valid Result Limits'. Actual Filling Weight > High Limit of 'Valid Result Limits'. SetPoint < Low Limit of 'Valid Result Limits'. SetPoint > High Limit of 'Valid Result Limits'. High Tare Limit < Low Tare Limit Actual Tare <...
- Page 81 Appendix F: Specifications F.1 Load Cell Input • 5 Volt excitation for upto 10 load cells (350 Ohm) • Compatible with 1, 2 & 3 mV/V load cells • Low noise wide bandwidth amplifier & 24 bit ADC F.2 A/D •...
- Page 82 Appendix G: Trouble-shooting G.1 Card does not respond after PC power-on Q. Everything was OK, but after PC restart the card suddenly stopped responding. A. As specified in section D.4, after PC power on or off the serial communication (RS232/RS485) is likely to drop. A card reset is needed in this case.
- Page 83 Appendix H: Zero & Tare There are two functions which are similar, yet actually different: Zero & Tare: • The Zero function supplies both manual and automatic ways to clear the gross weight. • The Auto-Tare function supplies a way to define the meaning of the setpoint parameter.
- Page 84 H.2 The Auto-Tare function This function supplies a way to define the meaning of the setpoint parameter: * When the ‘AutoTare’ option is not activated, the setpoint defines the requested final gross weight. That is, if the setpoint is 100 kg and the starting gross weight is 90 kg, the filling amount will be 10 kg.
- Page 85 OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product.
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