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Series 7 Digital Force Gauges User’s Guide Thank you… Thank you for purchasing a Mark-10 Series 7 digital force gauge, designed for tension and compression testing applications from 0.12 lb to 1,000 lb (0.5 N to 5,000 N) full scale. The Series 7 is an essential component of a force testing system, typically also comprising a test stand, grips, and data collection software. With proper usage, we are confident that you will get many years of great service with this product.
Series 7 Digital Force Gauges User’s Guide 1 OVERVIEW 1.1 List of included items Qty. 1 1 1 1 1 1 1 1 1 1 1 1 1 1 M7-012 – M7-20 12-1049 08-1022 08-1026 G1024 G1026 G1025 G1027 G1029 G1028 09-1165 - Part No.
Series 7 Digital Force Gauges User’s Guide 6. In certain applications, such as the testing of brittle samples that can shatter, or other applications that could lead to a hazardous situation, it is strongly recommended that a machine guarding system be employed to protect the operator and others in the vicinity from shards or debris. 7. When the gauge is not in use, ensure that the power is turned off. 2 POWER The gauge is powered either by an 8.4V NiMH rechargeable battery or by an AC adapter.
Series 7 Digital Force Gauges User’s Guide 3 SETUP 3.1 Mechanical Setup 3.1.1 Loading shaft orientation In order to accommodate a variety of testing requirements, the orientation of the loading shaft may be set up in either of the two positions shown below. In order to change the loading shaft orientation, loosen two captive screws on the back side of the housing, separate the two housing halves, rotate one half 180 degrees, and reassemble.
Series 7 Digital Force Gauges User’s Guide such a way that it is prevented from slipping out during a test, preventing a potential safety risk to the operator and others in the vicinity. If using a grip or fixture from a supplier other than Mark-10, ensure that it is constructed of suitably rugged materials and components. Do not use jam nuts or tools to tighten grips or attachments onto the shaft. Finger-tighten only. 3.
Series 7 Digital Force Gauges 4 Primary reading / Kinetic COF 5 Load bar 6 Units 7 Break Detection On/Off 8 Mode 9 10 Number of stored data points Battery / AC adapter indicator 11 Automatic data output indicator 12 High / low limit indicators 13 Set points User’s Guide The current displayed force reading. When the COF unit is selected, this reading represents the kinetic coefficient of friction upon completion of an Averaging sequence. See Operating Modes section for details.
Series 7 Digital Force Gauges User’s Guide 4.2 Controls Primary Label ZERO MENU MODE DATA UNITS Primary Function Powers the gauge 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. Stores a value to memory, transmits the current reading to an external device, and/or initiates automatic data output, depending on setup.
Series 7 Digital Force Gauges User’s Guide DIGITAL FILTERS (1 = Fastest) Current Reading 1 Displayed Reading 1 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: 1,2,4,8,16,32,64,128,256,512,1024,2048,4096,8192.
Series 7 Digital Force Gauges User’s Guide – the displayed value is greater than the upper force limit (NO GO HIGH) – the displayed value is between the limits (GO) – the displayed value is less than the lower force limit (NO GO LOW) Note: Set point indicators and outputs reference the displayed reading, not necessarily the current live load. 6.3 Set Point Outputs Schematic Diagram 6.
Series 7 Digital Force Gauges User’s Guide 7.1 Configuration To enable Break Detection and configure the automatic functions, select Break Detection from the main menu. The display appears as follows: BREAK DETECTION * Disabled Enabled-End Test Enabled-Abort + Break Settings + Auto Output + More Select “+ More” for additional options: BREAK DETECTION 2 * Auto Storage * Auto Zero Auto Zero Delay 3 sec. Any combination of the above functions may be selected.
Series 7 Digital Force Gauges Threshold % Drop Auto Zero Delay User’s Guide Sets the percentage of full scale at which the break detection function becomes active. This threshold is provided to ignore peaks that can occur during sample loading and unloading. Available settings: 5–90%, in 5% increments. Sets the percentage drop from the peak reading at which the break is detected. Available settings: 5%–90% in 5% increments. Sets the time delay before the primary and peak readings are zeroed.
Series 7 Digital Force Gauges User’s Guide 8.1 Real Time (RT) The primary reading corresponds to the live measured reading. 8.2 Peak Compression (PC) The primary reading corresponds to the peak compression reading observed. If the actual force 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. 8.3 Peak Tension / Static Coefficient of Friction (PT) This is the same as Peak Compression, but for tension readings.
Series 7 Digital Force Gauges Parameter Initial Delay Averaging Time Trigger Force User’s Guide Description The time delay, in seconds, before the averaging sequence commences. The time duration, in seconds, of the averaging sequence. The minimum force required to start the averaging sequence. Toggle between compression and tension directions by pressing the DIRECTION key. Initial delay follows the trigger force.
Series 7 Digital Force Gauges User’s Guide 9.5 External Trigger (ET) This mode of operation is useful for measuring electrical contact activation force as well as synchronization of multiple instruments for a “snapshot” view of applied forces. It is possible to capture the reading with a normally open contact (high to low transition of the trigger signal) or a normally closed contact (low to high transition).
Series 7 Digital Force Gauges User’s Guide 9.5.1 External Trigger Schematic Diagram +3.3V BAT54SLT1G 22k SWITCH UNDER TEST (NO OR NC) 330 Ohm 14 TO MICROPROCESSOR IN 0.1 uF 1 GND GND GAUGE USER - SUPPLIED Note: Custom cabling is required to connect to a switch, or to connect a switch and a Mark-10 test stand simultaneously. 9.6 Data Capture (CAPT) This mode of operation is used to capture and store continuous data in the gauge’s memory.
Series 7 Digital Force Gauges User’s Guide START CONDITION Momentary HiLo Momentary LoHi * Maintained High Maintained Low + More Select “+ More” for additional options: START CONDITION 2 Start Force 3.500 lbF * DATA Key Function Momentary HiLo Momentary LoHi Maintained High Maintained Low Start Force Data capture is initiated when: An external trigger occurs. See External Trigger sub-section for details for each of these functions. The desired trigger force is reached.
Series 7 Digital Force Gauges User’s Guide Note 2: Data capture may be manually stopped at any time by pressing the ZERO key. A message will appear at the bottom of the screen: “CAPTURE CANCELLED”. The next Data Capture sequence cannot occur until the ZERO key is pressed or until the gauge is automatically re-armed (see the following sub-section for details). If another Data Capture sequence is initiated before the memory is cleared, these data points are appended to the existing data stored in memory. 9.
Series 7 Digital Force Gauges Enabled Peak Settings Auto Output Auto Store PK1 Auto Store PK2 Auto Zero User’s Guide If enabled, 2PK appears as one of the operating modes. In the main display, the Peak readings will reference the first and second peaks – first peak on top, second peak below. Refer to the Home Screen & Controls section for details. See following sub-sections for details. Automatically stores the first peak reading to memory. Automatically stores the second peak reading to memory.
Series 7 Digital Force Gauges User’s Guide 9.7.3 Auto Output Settings Scroll to Auto Output Settings and press ENTER to select the desired automatic outputs. Select RS232/USB and/or Mitutoyo outputs, and select First and/or Second peaks, and an Output Pin, if desired.
Series 7 Digital Force Gauges User’s Guide the desired reading and press DELETE. The letter “D” appears to the left of the record number, indicating that the gauge is in Delete mode, as follows: 0001 0002 0003 0004 D 0005 0006 0007 2.458 lbF 2.224 lbF 2.446 lbF 1.890 lbF 2.098 lbF 1.998 lbF 2.042 lbF Press ENTER to delete the value. To exit Delete mode, press DELETE again. Any number of readings may be individually deleted, however, all readings may also be cleared simultaneously.
Series 7 Digital Force Gauges User’s Guide *** WARNING *** DATA IN MEMORY WILL BE LOST CANCEL POWER OFF If no option is selected, this screen will be displayed indefinitely, or until battery power has been depleted. 11 FOOTSWITCH This feature allows the gauge to execute up to three functions in sequence, separated by an optional delay, when the External Trigger input (pin 14 on the I/O connector) transitions from a high level to a low level. The ET input has an internal pull-up resistor.
Series 7 Digital Force Gauges User’s Guide 12 COEFFICIENT OF FRICTION Series 7 gauges can determine the static and kinetic coefficients of friction (COF) between two materials through the Averaging and peak tension capture functions. The process for determining COF requires dragging a block of a known mass (usually 200 g) over a surface at a constant speed. The force required to do so is divided by the weight of the block. For example, a force of 100 gF divided by 200 g equals 0.5 COF.
Series 7 Digital Force Gauges Function Enabled Base Unit Unit Name Multiplier User’s Guide Description Press ENTER to enable, and an asterisk appears. After exiting the menu, the custom unit appears as one of the available units. Select any available standard unit. Specify up to 5 alphanumeric characters, using the key to advance to the next character, and the and keys to scroll through the available characters. The character “_” refers to a space.
Series 7 Digital Force Gauges User’s Guide 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 values have positive polarity, tension values have negative polarity. Output format includes the value only. Polarity same as above. Compression values have negative polarity, tension values have positive polarity.
Series 7 Digital Force Gauges User’s Guide 14.3 Analog Output This output can be used for chart recorders, oscilloscopes, data acquisition systems, or any other compatible devices with analog inputs. The output produces ±1 volt at full scale of the instrument. The polarity of the signal is positive for compression and negative for tension. 14.4 DATA Key Functions The DATA key can be configured to perform several functions. To configure the DATA key, select DATA Key from the menu.
Series 7 Digital Force Gauges User’s Guide ** The output assignments depend on several factors described in the table below. Output functions always reference the primary reading on the display, regardless of the current mode.
Series 7 Digital Force Gauges User’s Guide Basic Functions CUR Current mode (real time mode) for primary reading PT Peak Tension mode for primary reading PC Peak Compression mode for primary reading CLR Clear peaks Z Zero display and perform the CLR function Filters FLTCn FLTPn Digital filter for displayed readings Digital filter for current readings n= 0-10, filter = 2n, ex: n=0= no filter, n=10=1024 samples averaged Memory & Statistics MEM Transmit all stored readings STA Transmit statistics Set Point
Series 7 Digital Force Gauges User’s Guide ETLH Enable reading captured on a low to high transition ETD Disable External trigger mode Input / Output Bits Sn Set output bit (open drain, pull to ground). n=0, 1, 2 Cn Clear output bit. n=0, 1, 2 Rn Read current status of output bit or level of input pin. n=0, 1, 2 ,3 Personality RN RM RV RS Read product name Read model number Read firmware version number Read serial number Other Commands AOFFn Auto-shutoff. n=0-30 minutes.
Series 7 Digital Force Gauges User’s Guide CALIBRATION Enter # cal points (1 to 10) Compression: 5 Tension: 5 The gauge can be calibrated at up to 10 points in each direction. Enter the number of calibration points for each direction (compression and tension). At least one point must be selected for each direction. Note: To achieve the accuracy specification of ±0.1%, it is recommended to calibrate the gauge at 5 or more even increments in both tension and compression directions.
Series 7 Digital Force Gauges User’s Guide CALIBRATION OFFSET CALIBRATION OFFSET Sensor passed Analog passed Sensor failed Analog failed If failed: 6. 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. 7.
Series 7 Digital Force Gauges User’s Guide 10. 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).
Series 7 Digital Force Gauges User’s Guide 14. 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. The calibration weight does not match the set value.
Series 7 Digital Force Gauges User’s Guide 16 PASSWORDS Two separate passwords may be set to control access to the Calibration section and to the menu and other keys. To access the passwords setup screen, select Passwords from the menu. The display appears as follows: PASSWORDS Calibration Menu Key Units Key Mode Key Zero Key Data Key 16.1 Calibration Password Select Calibration from the sub-menu.
Series 7 Digital Force Gauges User’s Guide INCORRECT PASSWORD Reset password Request code: XXXX To re-enter the password, press ESC to exit to the home screen. Then, access the desired function and enter the password again when prompted. If the password has been misplaced, it can be reset. Press ENTER to generate a request code. The request code must be supplied to Mark-10 or a distributor, who will then provide a corresponding authorization code. Enter the activation code to disable the password.
Series 7 Digital Force Gauges Selection Off On Auto User’s Guide Description Backlight to be off upon powering on the gauge. Backlight to be on upon powering on the gauge. Backlight to be on upon powering gauge, 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.
Series 7 Digital Force Gauges User’s Guide 17.6 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: RESTORE DEFAULT SETTINGS? No Yes 17.7 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 Force Gauge Series 7 Model No: M7-50 Serial No: 1234567 Version: 1.
Series 7 Digital Force Gauges User’s Guide 18.2 Factory Default Settings Parameter Set points Upper Lower Filters Current Displayed Average mode Initial Delay Trigger Force Averaging Time (sec.) Auto Output Settings Auto Zero Delay External Trigger Auto Output Settings Auto Zero Delay DATA Key Functions RS-232/USB Output Mitutoyo Output Memory Storage Auto Zero Auto Zero Delay Serial/USB RS-232 Output Selected USB Output Selected Baud Rate Data Format Auto Output Outputs per Sec.
Series 7 Digital Force Gauges Keys Alerts Set Points Automatic Shutoff Set Minutes Backlight Set Minutes Initial Settings Units Mode Passwords User’s Guide Enabled Enabled Momentary Enabled 5 Auto 1 lbF Real Time All disabled 18.3 Capacity x Resolution Model lbF ozF kgF gF N kN mN M7-012 0.12 x 0.00002 2 x 0.0005 - 50 x 0.01 0.5 x 0.0001 - 500 x 0.1 M7-025 0.25 x 0.00005 4 x 0.001 - 100 x 0.02 1 x 0.0002 - 1000 x 0.2 M7-05 0.5 x 0.0001 8 x 0.002 - 250 x 0.05 2.5 x 0.
Series 7 Digital Force Gauges User’s Guide 18.5 Dimensions IN [MM] M7-012 – M7-100 M7-200 – M7-500 Thread #10-32M UNF 5/16-18M UNC Flat 5/16 [7.94] 5/16 [7.
Series 7 Digital Force Gauges User’s Guide Mark-10 Corporation has been an innovator in the force and torque measurement fields since 1979. We strive to achieve 100% customer satisfaction through excellence in product design, manufacturing and customer support. In addition to our standard line of products we can provide modifications and custom designs for OEM applications. Our engineering team is eager to satisfy any special requirements.
