OHAUS Defender 6000 Series Service Manual Download Page 1 | Manualshive

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Dallas

Houston

Austin

Ft Worth

NicolScales.com

800.225.8181

Nicol Scales & Measurement is an ISO Accredited Calibration

Company that has provided calibration, repair and sales of all types

of weighing and measurement products since 1931.

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Summary of Contents for Defender 6000 Series

Page 1: ...ustin Ft Worth NicolScales com 800 225 8181 Contact Us Nicol Scales Measurement is an ISO Accredited Calibration Company that has provided calibration repair and sales of all types of weighing and mea...

Page 2: ...DefenderTM 6000 Series Base Service Manual...

Page 3: ...hecking Load Cells for Trouble 11 CHAPTER 3 MAINTENANCE AND REPAIR PROCEDURES 12 3 1 Preventive Maintenance 12 3 1 1 Preventive Maintenance Checklist 12 3 2 Replacing the Load Cell 12 3 3 Overload Sto...

Page 4: ...uides for operational and performance tests and adjustments Chapter 5 Parts Identification Contains exploded views of Defender series Bases and parts identifying all serviceable components with parts...

Page 5: ...intended for indoor use and should only be operated in dry locations Operate the equipment only under ambient conditions specified in the user instructions Do not operate the equipment in hazardous o...

Page 6: ...irements of ASTM Class or OIML Mass values 3kg to 600kg depending on the Base model The full scale rated capacity of the Base should be used for Span calibration 1 7 Service Strategy The Load Cells us...

Page 7: ...Capacity 3 kg 6 kg 15 kg 30 kg 60 kg 150 kg Approved Resolution OIML 3000e Safe Overload Capacity 150 of capacity Pan Dimensions 254 x 254 mm 10 x 10 in 305 x 305 mm 12 x 12 in 400 x 500 mm 15 7 x 19...

Page 8: ...400 x 500 mm 15 7 x 19 6 in Base Construction Stainless Steel platform with stainless steel frame and rubber leveling feet Repeatability std deviation 2d Linearity 2d Load Cell Capacity 10 kg 20 kg 50...

Page 9: ...Pan Dimensions 254x 254 mm 305 x 305 mm 400 x 500 mm 600 x 800 mm Base Construction Stainless Steel platform with stainless steel frame and rubber leveling feet Load Cell Capacity 10 kg 10 kg 20 kg 5...

Page 10: ...luences such as moisture physical damage or electrical interference The strain gauges are wired into a Wheatstone Bridge Circuit See Figure 1 1 Figure 1 1 Downward force on the Platform bends the beam...

Page 11: ...eight is loaded to the Load Cell For example a 500kg Load Cell with 2mV V output and 5V excitation would have a change of 0 02mV per kg change in the load that is 10mV 500 0 02mV per kg At a load of 2...

Page 12: ...com 10 Defender Series Bases Service Manual Type2 For models i D150K1L i D300K1VZH i D600K1VZH bases FUNCTION WIRE COLOR Excitation Green Excitation Black Signal White Signal Red Sense Light Yellow Se...

Page 13: ...unction Make sure that the proper Platform is supplied with the Base Replace all damaged parts See Chapter 5 for parts list Remove the Platform from the Base Check that the Overload Stops are not touc...

Page 14: ...efore using the base 3 1 1 Preventive Maintenance Checklist The scale should be inspected and checked regularly as follows 1 Clean the base 2 Remove the Platform to inspect and clean the area beneath...

Page 15: ...m Frame and the Load Cell Spacer aside 4 Remove the Top Load Cell Mounting Bolts washers and spacer The Load Cell assembly can now be removed from the Top Frame 5 Remove the Mounting Block Bolts from...

Page 16: ...t and re check the Gap 4 Re adjust if necessary 5 Cover the Platform and check for full capacity See Table 3 1 for Gap settings TABLE 3 1 OVERLOAD GAP SETTINGS FOR DEFENDER SERIES BASES Base Model Bas...

Page 17: ...ARTTENTION Make sure the test area is free from drafts and that the base rests on a level and vibration free surface 4 2 Load Cell Resistance Checks Use an ohm meter to measure across each pair of wi...

Page 18: ...nnect the excitation signal shield and sensing wires if provided to the Indicator Calibrate the Indicator to read the load in the units required for example kilograms or grams Consult the Indicator in...

Page 19: ...NG 3 Using an mV meter measure and record the signal voltage 4 Obtain the mV V output figure from the Load Cell data supplied with the Load Cell and compare the signal changes seen with the theoretica...

Page 20: ...ssed the Load Cell must be adjusted or replaced Prior to starting this test the Base must be connected to a properly functioning Indicator with capacity and readability values set according to the spe...

Page 21: ...Move the weight to point D and record the reading 7 If the reading at point A is negative file at points 1 and 4 AT AN ANGLE 8 If the reading at point B is negative file at points 1 and 2 STRAIGHT ACR...

Page 22: ...ll cases where a part is replaced the base must be thoroughly checked after the replacement is made The base MUST meet the parameters of all applicable specifications in this manual If further technic...

Page 23: ...R S Base Figure 5 1 Defender 6000 series Base R S Base Drawing Item Description Comments 1 Plate S Base i DT61 Plate R Base i DT61 2 Loadcell 1 PW15AHC3 10KG 1 i D3K1S i D5K1S i D6K1S i D3K1SZH i D6K1...

Page 24: ...L Base Drawing Item Description Comments 1 Pan 400x500 SUS316 i DT61 2 Loadcell 1 PW15AHC3 100KG 1 i D50K1L i D60K1L i D60K1LZH Loadcell SSH 200kg 2 5m i D150K1L Loadcell SSH 300kg 2 5m i D150K1LZH 3...

Page 25: ...ll SSH 500kg 2 5m i D300K1VZH Loadcell SSH 1t 2 5m i D600K1VZH 3 Level Kit D52 SST Base 4 Hardware Kit V Base i DT61 5 Foot 4 S R L base i DT61 6 Rubber Support SST Base i DT61 NS Box V D52 NS Box Com...

Page 26: ...ugh typically there may be a small offset voltage at zero load Over the full rated capacity of the load cell the mV output will change The amount by which it changes depends upon the resistance change...

Page 27: ...S Corporation 7 Campus Drive Suite 310 Parsippany NJ 07054 USA Tel 1 973 377 9000 Fax 1 973 944 7177 With offices worldwide www ohaus com 30655626 P N 30655626A 2021 OHAUS Corporation all rights reser...

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