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User’s Manual

Model 7821

Bench Scale

Содержание 7821

Страница 1: ...User s Manual Model 7821 Bench Scale...

Страница 2: ...ful interference in which case the user will be required to correct the interference at his own expense CANADA This digital apparatus does not exceed the Class A limits for radio noise emissions from...

Страница 3: ...of Contents 3 Specifications 4 Unpacking and Installing the Scale 5 Operation 5 Power Up 5 Modes of Operation 6 Diagnostics Mode 10 Configuration Mode 14 Calibration Mode 16 Gravity Mode 18 Error Cod...

Страница 4: ...Model 7821 70 7821 75 and 7821 100 USA NTEP COC 95 070 Canada Ministry of Industry AM5076 Initial automatic zero setting is 10 of maxi mum capacity active at power up Manual zero setting range is 2 of...

Страница 5: ...4 6 11 7cm For the optional remote display attach Velcro fasteners to both the back of the display and to the surface where the display is to be mounted To attach the Velcro fasteners clean the mount...

Страница 6: ...side the 10 zero window center dashes are displayed _ _ _ _ Recalibration may be required 1 With the scale powered on make sure the scale platter is empty and the display is at zero If it not press th...

Страница 7: ...ey changes the unit of measure between lb and kg The NCI 7821 bench scale has an optional remote display Typically the remote display is used to display weight only i e the ZERO and UNITS keys are not...

Страница 8: ...Model 7821 Bench Scale User s Manual 8 Figure 2 Menu Structure...

Страница 9: ...acity Calibration Capacity Calibration lbs Weights lbs kg Weights kg 150 x 05 lb 10 50 150 60 x 02 kg 10 30 60 70 x 02 kg 10 30 70 75 x 02 kg 10 30 75 150 x 02 lb 10 50 150 75 x 01 kg 10 30 75 200 x 0...

Страница 10: ...e test of RAM in the processor Displays PASS or FAIL ROM RO Performs a checksum of all locations of ROM in the processor Displays PASS or FAIL Input Output I O Data is output by the scale and through...

Страница 11: ...splayed This stands for the RAM test 5 Press the UNITS key to perform the RAM test PASS or FAIL is displayed briefly then DISP If the test fails contact your local Weigh Tronix distributor for service...

Страница 12: ...nections and or contact your local Weigh Tronix distribu tor for service 10 Press the ZERO key HRESA is displayed This stands for the high resolution test with AZT enabled 11 Press the UNITS key to pe...

Страница 13: ...ent gravity setting is displayed 18 Press the ZERO key CAL G is displayed This stands for calibration gravity setting 19 Press the UNITS key The calibration gravity setting is dis played 20 When you a...

Страница 14: ...rity from table Protocol PROT Choose serial communi cation protocol NCI Ref 8408 14788 01 W S Z H U M Only 8213 Ref 8408 14788 03 3835 Ref 8408 14788 12 Follow these steps to access and configure the...

Страница 15: ...he choice you want is displayed press the UNITS key The choice is accepted and the display shows BAUD 8 Press the ZERO key PROT is displayed 9 Press the UNITS Key The current protocol is displayed 10...

Страница 16: ...lects the capacity of the scale Follow these steps to calibrate the scale Refer to Figure 2 1 From normal weighing mode move Switch 1 to the Menu Mode or OPEN position DIAG is displayed Press the ZERO...

Страница 17: ...rom Table 3 6 Press the ZERO key to toggle between the capacity choices When the choice you want is displayed press the UNITS key The scale prompts LOAD 0 7 Clear all weight from the scale platter and...

Страница 18: ...intains two gravity setting values The first is the calibration site value known as CAL G The second is the end user or local site value and is known as LOC G When the scale was originally calibrated...

Страница 19: ...ly way to clear it is by recalibrating the scale The error codes are broken down into two hexadecimal numbers with each bit defining a single error condition The error codes are defined as follows Int...

Страница 20: ...sponse descriptions please refer to the following Weigh Tronix NCI Serial Communications Documents NCI Standard Protocol 8408 14788 01 W S Z H U M only 8213 Protocol 8408 14788 03 NCI 3835 Protocol 84...

Страница 21: ...F hh CR ETX Results Scale is zeroed returns status H CR Scale Response LF xxxx xxuu CR LR hh CR ETX Results Returns decimal weight in 10x with units plus scale status U CR Scale Response LF uu CR ETX...

Страница 22: ...e of weighing platform 3 Power down then power up the scale 4 Recalibrate the scale 1 Power down then power up the scale 2 Check software PROM for proper insertion 3 Check display cables for the prope...

Страница 23: ...he scale 2 Press the ZERO key 3 Power down then power up the scale 4 Recalibrate the scale 1 Check cable connection at both the rear of the scale and the host device 2 Check communication setting and...

Страница 24: ...Model 7821 Bench Scale User s Manual 24 Notes...

Страница 25: ...Model 7821 Bench Scale User s Manual 25 Notes...

Страница 26: ...Model 7821 Bench Scale User s Manual 26...

Страница 27: ...Model 7821 Bench Scale User s Manual 27...

Страница 28: ...1000 Armstrong Drive Fairmont MN 56031 Telephone 507 238 4461 Facsimile 507 238 4195 E Mail service wt nci com www wt nci com...

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