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OHAUS Ranger series Service Manual
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OHAUS Ranger series Service Manual

Counting & weighing
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Ohaus Corporation
Ohaus Corporation
Ohaus Corporation
Ohaus Corporation
Ohaus Corporation
19A Chapin Road
P.O. Box 2033
Pine Brook, NJ 07058-2033 USA
www.ohaus.com
RANGER
COUNTING & WEIGHING SCALES
SERVICE MANUAL
Ohaus Corporation 19A Chapin Road, P.O. Box 2033, Pine Brook, NJ 07058-2033 (973) 377-9000

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  • Page 1 Ohaus Corporation Ohaus Corporation Ohaus Corporation Ohaus Corporation 19A Chapin Road P.O. Box 2033 Pine Brook, NJ 07058-2033 USA www.ohaus.com RANGER COUNTING & WEIGHING SCALES SERVICE MANUAL Ohaus Corporation 19A Chapin Road, P.O. Box 2033, Pine Brook, NJ 07058-2033 (973) 377-9000...
  • Page 3 Weighing Scale The information contained in this manual is believed to be accurate at the time of publication, but Ohaus Corporation assumes no liability arising from the use or misuse of this material. Reproduc- tion of this material is strictly prohibited.

  • Page 5: Table Of Contents

    TABLE OF CONTENTS CHAPTER 1 INTRODUCTION Page 1.1 Overview of Ranger Counting Scale Controls ........1-1 1.2 Overview of Ranger Weighing Scale Controls ........1-3 1.3 Introduction ..................1-4 1.4 Service Facilities ..................1-4 1.5 Tools and Test Equipment Required ............1-5 1.5.1 Special Tools ..................
  • Page 6 TABLE OF CONTENTS (Cont.) 3.2.6.5 How to Save and Store an Individual Menu Item ..... 3-15 3.2.6.6 How to Quit the Menus ............ 3-15 3.2.6.7 Calibration Menu ............. 3-15 3.2.6.8 Setup Menu ..............3-16 3.2.6.9 Read Menu ..............3-17 3.2.6.10 RS232-1/RS232-2 Menus ..........3-18 3.2.6.11 Lockout Menu ..............
  • Page 7 TABLE OF CONTENTS (Cont.) CHAPTER 4 DATA TABLES 4.1 introduction ..................4-1 4.1.1 Certifiable and Certified Ranger Scales with Strain Guage Weighing Cells ................4-1 4.1.2 Noncertifiable Ranger Scales with Strain Guage Weighing Cells .. 4-2 4.1.3 Overview of Weighing Cells and Preloads ........4-3 4.1.4 Geographical Adjustment Values ...........
  • Page 8 TABLE OF CONTENTS (Cont.) LIST OF TABLES TABLE NO. TITLE PAGE NO. Ranger Calibration Masses kg ............1-5 Ranger Calibration Masses lb ............1-5 Ranger Count NTEP Version Specifications ........1-6 Ranger Weighing NTEP Version Specifications ....... 1-7 Ranger Count OIML Specifications ........... 1-8 Ranger Weighing OIML Version Specifications.........

  • Page 9: Chapter 1 Introduction

    CHAPTER 1 INTRODUCTION 1.1 OVERVIEW OF RANGER COUNTING SCALE CONTROLS Rear of scale Display Auto Opt Scale Count Sample Sample Clear Function keys Select Weight Size...
  • Page 10 CHAPTER 1 INTRODUCTION 1.1 OVERVIEW OF RANGER COUNTING SCALE CONTROLS (Cont.) Weighing range display (for dual range Keypad scales) Function keys Symbols for net/gross weight Display Battery discharge status (optional battery) Scale specifications Weighing unit Weighing pan Number of user selected reference pieces Power cord Weighing range bar graph Power cord with AC Adapter (Scale with...

  • Page 11: Overview Of Ranger Weighing Scale Controls

    CHAPTER 1 INTRODUCTION 1.2 OVERVIEW OF RANGER WEIGHING SCALE CONTROLS Rear of scale Display Hole for antitheft device Keypad Spirt level Display RS232 Interface (Optional) Capacity label RS232 Interface (Standard) Weighing pan Stability indicator Power cord Weighing range display (for dual range AC Adapter (Scale with battery option) scales) Adjustable feet...

  • Page 12: Introduction

    Before servicing the scale, you should be familiar with the Instruction Manual which is packed with every Ranger Scale. 1.4 SERVICE FACILITIES To service the Ohaus Ranger Scale, the service area should meet the following requirements: DO NOT SERVICE the scale: • Next to open windows or doors causing drafts or rapid temperature changes.

  • Page 13: Tools And Test Equipment Required

    CHAPTER 1 INTRODUCTION 1.5 TOOLS AND TEST EQUIPMENT REQUIRED In order to properly service the Ohaus Ranger Scales, a standard electronic tool kit is required. No special tools and test items are required. 1.5.1 Special Tools None required. 1.5.2 Standard Tools and Test Equipment 1.

  • Page 14: Specifications

    CHAPTER 1 INTRODUCTION 1.7 SPECIFICATIONS Complete specificatons for the Ohaus Ranger Counting and Weighing Scales are listed in Tables 1-3 through 1-6. When a scale has been serviced, it must meet the specifications listed in the table. Before servicing the scale, determine what specifications are not met.

  • Page 15: Ranger Weighing Ntep Version Specifications

    CHAPTER 1 INTRODUCTION 1.7 SPECIFICATIONS (Cont.) TABLE 1-4. RANGER WEIGHING NTEP VERSION SPECIFICATIONS Default Capacity x Readability (lb) 6 x 0.0005 12 x 0.001 24 x 0.002 60 x 0.005 120 x 0.01 Default Capacity x Readability (kg) 3 x 0.0002 6 x 0.0005 12 x 0.001 30 x 0.002...

  • Page 16: Ranger Weighing Oiml Version Specifications

    CHAPTER 1 INTRODUCTION 1.7 SPECIFICATIONS (Cont.) TABLE 1-5. RANGER COUNT OIML VERSION SPECIFICATIONS WEIGHING RANGE Range 1 Range 2 Range 1 Range 2 Range 1 Range 2 Range 1 Range 2 Range 1 Range 2 Default Cap. x Readability (kg) 1.5kg x0.5g 3kg x 1g 3kg x 1g...

  • Page 17: Chapter 2 Troubleshooting

    In the event that erratic or fluctuating weight readings are observed, it is necessary to isolate the problem to either the mechanical area or the electronic area of the scale. If a problem arises that is not covered in this manual, contact: Ohaus Corporation 19A Chapin Road P.O. Box 2033...

  • Page 18: Diagnostic Guide

    CHAPTER 2 TROUBLESHOOTING TABLE 2-1. DIAGNOSTIC GUIDE SYMPTOM REMEDY PROBABLE CAUSE(S) Unit will not turn on. Check power cord connec- Not plugged in or properly con- nected. tions. Check battery, charge bat- Battery operation -battery dead tery. or not fully charged. Membrane switch failure.

  • Page 19: Error Codes

    CHAPTER 2 TROUBLESHOOTING 2.3 ERROR CODES This scale is equipped with software which will display an error condition when it occurs. When a problem occurs using the scale, the display will indicate an error code. Review the listed codes and follow instructions to correct the problem.
  • Page 20 CHAPTER 2 TROUBLESHOOTING...

  • Page 21: Chapter 3 Maintenance Procedures

    CHAPTER 3 MAINTENANCE PROCEDURES 3.1 PREVENTIVE MAINTENANCE Ohaus scales are precision instruments and should be carefully handled, stored in a clean dry area which is dust free, and cleaned periodically. It is recommended that when a scale has had chemicals or liquids spilled on it, the scale should be cleaned as soon as possible.

  • Page 22: Menu Structure

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.2 Menu Structure Programmable features of the Ranger Scales are contained in menus which are accessed through the front panel control switches. Figure 3-2 illustrates the Ranger Counting Scale, Figure 3-3 illustrates the Ranger Weighing Scale. Figure 3-4 illustrates the service menu structure. Read Setup reset...
  • Page 23 CHAPTER 3 MAINTENANCE PROCEDURES 3.2.2 Menu Structure (Cont.) rs232-2 Com 2 Com 1 rs232-1 Quit reset reset Store ? YES, NO YES, NO ON, OFF Mode Mode quit Print, On Stb, Stb Print, On Stb, Stb Setup only, Cont, Dialog, only, Cont, Dialog, ON, OFF Disp 2, Ref 2, Bulk2...
  • Page 24 CHAPTER 3 MAINTENANCE PROCEDURES 3.2.2 Menu Structure (Cont.) Read Setup reset reset Span res rd res sp (full capacity weight) ON, OFF,CAN -done- high quit CAL UN quit Lb, Kg (50% capacity weight) Unit 1 Grad (100% capacity weight) Unit 1 , Unit 1g, Unit 1kg, 0.0005, 0.001, -done-...
  • Page 25 CHAPTER 3 MAINTENANCE PROCEDURES 3.2.2 Menu Structure (Cont.) Com 2 rs232-2 Com 1 rs232-1 Quit reset reset Store ? reset rs reset rs ON, OFF Mode Mode quit Print, On Stb, Stbonly, Print,On Stb, Stbonly, Setup Cont, Dialog, Disp 2 Cont, Dialog, Disp 2 ON, OFF quit...

  • Page 26: Ranger Counting Switch Functions

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.2 Menu Structure (Cont.) Display Display/ SELECT SELECT START START Duty Cycle Edit S/N RANGE LIN CAL SPAN CAL FACTOR Figure 3-4. Ranger Service Menu Structure . 3.2.3 Ranger Counting Switch Functions There are two sets of button switches located on the front panel of the Ranger Counting Scale. The six button switches located directly under the display are used for counting functions.

  • Page 27: Ranger Counting Scale Menu Operation

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.3 Ranger Counting Switch Functions PRINT PRINT PRINT PRINT PRINT G/N/T G/N/T G/N/T G/N/T G/N/T ONZERO ONZERO ONZERO ONZERO ONZERO TARE TARE TARE TARE TARE UNITS UNITS UNITS UNITS UNITS MENU MENU MENU MENU MENU BUTTONS PRIMARY FUNCTION SECONDARY FUNCTION ON/ZERO...

  • Page 28: How To Enter An Individual Menu Item

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.4 Ranger Counting Scale Menu Operation 3.2.4.4 How to Enter an Individual Menu Item When in any menu, a short press on the G/N/T MENU button = YES and you can enter a specific menu item. To advance through a given menu, make short presses on the PRINT UNITS =NO button. 3.2.4.5 How to Save and Store an individual menu item When a menu item has been changed once the desired selection is shown, make a short press on G/N/T MENU button, Quit appears on the display.

  • Page 29: Setup Menu

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.4 Ranger Counting Scale Menu Operation (Cont.) 3.2.4.8 Setup Menu The Setup menu contains entries for LFT, calibration units, graduations, processing, back light, list and end set. See table below for details. Bold equals factory default settings. Function/Display Available Settings Application...

  • Page 30: Read Menu

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.4 Ranger Counting Scale Menu Operation (Cont.) 3.2.4.8 Setup Menu (Cont.) Function/Display Available Settings Application Auto add Calculates the minimum refer- ence sample for the most accu- rate counting. List Prints a setup list to the Print RS232 when Mode is set to PRINT on Stability or...

  • Page 31: Rs232-1/Rs232-2 Menus

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.4 Ranger Counting Scale Menu Operation (Cont.) 3.2.4.9 Read Menu (Cont.) Function/Display Available Settings Application Auto-Zero Tracking Settings minimize effects of tem- 0.5d, 1d, 3d, Off perature and small distur- bances on the zero reading. Auto Tare Enables automatic tare when set to ON.
  • Page 32 CHAPTER 3 MAINTENANCE PROCEDURES 3.2.4 Ranger Counting Scale Menu Operation (Cont.) 3.2.4.10 RS232-1/RS232-2 Menus (Cont.) Function/Display Available Settings Application Baud Rate 300, 600, 1200, , 4800, Various baud rates are avail- 9600, 19200 able to match external equip- ment communication re- quirements.

  • Page 33: Lockout Menu

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.4 Ranger Counting Scale Menu Operation (Cont.) 3.2.4.11 Lockout Menu This menu allows software locking and unlocking of the calibra- tion, setup, read, RS232-1, RS232-2, menus. Turning individual menu locks ON and OFF prevents accidental changes to menu parameters.

  • Page 34: Quit Menu

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.4 Ranger Counting Scale Menu Operation (Cont.) 3.2.4.12 Quit Menu End of menus. - YES,- prompts to store, saves all changes, and then will go to a weighing mode, NO, ignores changes and returns to the weighing mode.

  • Page 35: How To Enter An Individual Menu

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.6 Ranger Weighing Scale Menu Functions (Cont.) 3.2.6.3 How to Enter an Individual Menu A short press on the G/N/T MENU button = YES and you can enter a specific menu. 3.2.6.4 How to Enter an Individual Menu Item When in any menu, a short press on the G/N/T MENU button = YES and you can enter a specific menu item.

  • Page 36: Setup Menu

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.6 Ranger Weighing Scale Menu Functions (Cont.) 3.2.6.8 Setup Menu The Setup menu contains entries for LFT, calibration units, graduations, processing, back light, list and end set. See table below for details. Bold equals factory default settings. Function/Display Available Settings Application...

  • Page 37: Read Menu

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.6 Ranger Weighing Scale Menu Functions (Cont.) 3.2.6.9 Read Menu The Read menu contains entries for reset, averaging level, unit 1, unit 2, auto zero, auto tare, auto power off, retain zero data and end. See table below for details. Bold equals factory default settings.

  • Page 38: Rs232-1/Rs232-2 Menus

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.6 Ranger Weighing Scale Menu Functions (Cont.) 3.2.6.10 RS232-1/RS232-2 Menus The RS232-1 menu provides the communication settings to port 1 (standard). RS232-2 is Port 2 which is an option and has exactly the same settings. Bold equals factory default settings. Function/Display Available Settings Application...

  • Page 39: Lockout Menu

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.6 Ranger Weighing Scale Menu Functions (Cont.) 3.2.6.10 RS232-1/RS232-2 Menus (Cont.) Default String Determines what is printed via Header, Gross, Net, Tare, print command. Selects a (PCS, APW, Ref CT, 4 L in f, string of data to be printed; F feed, LN for header, gross, net, tare, pieces, average piece weight,...

  • Page 40: Quit Menu

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.6.11 Lockout Menu (Cont.) Function/Display Available Settings Application RS232-1 An ON setting locks out the RS232-1 menu. RS232-2 An ON setting locks out the RS232-2 menu. Locks/unlocks all of the Lock- Lockset out menu. When set on, locks all software settings in this menu.

  • Page 41: Calibration And Sealing

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.7 Calibration and Sealing Ranger Counting and Weighing scales offer a choice of two calibration methods: Span Calibration, and Linearity Calibration. Span - Span calibration ensures that the scale reads within specifications using two weight values: zero and a weight value close to 100% of the full capacity.

  • Page 42: Unlocking The Menus

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.7.2 Calibration Procedure (Cont.) span. MENU Place the indicated mass on the platform and press the button. If the calibration was successful, data is saved automatically. Remove calibration masses from platform. Linearity When performing a linearity calibration, -0- is first displayed fol- lowed by the first mass and then a second mass.

  • Page 43: Weights And Measures Sealing

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.7.3 Unlocking the Menus (Cont.) On high capacity scales, remove the existing seal and six cover screws from the bottom of the scale. You will have to unscrew the feet to access the screws. Position the scale so the bottom is accessible. : Do the next step carefully.

  • Page 44: Performance Tests

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.8 Performance Tests Accurate performance of the Ranger scales is determined by a series of three performance tests. The displayed readings are compared with the tolerances listed in Table 3-1. Tolerance values are expressed in counts. A one count change is equal to the last digit shown on the scale display. TABLE 3-1.

  • Page 45: Off-Center Load Test

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.8.2 Off-Center Load Test The Off-Center Load Test is used to determine whether displayed weight values will be affected by moving the sample to different areas of the Platform. See Figure 3-5. Place 1/2 of the scale capacity in the center of the Platform (1). Press the ON/ZERO OFF button to return the reading to zero.
  • Page 46 If after several attempts the display fails to return to zero, a repeatability problem is indicated and the scale must be serviced by an Ohaus Product Service Specialist. 6. Repeat steps 3 through 5 using Load 2, Load 3 and Load 4 as applicable.

  • Page 47: Rs232 Interface Test

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.9 RS232 Interface Test The RS232 Interface in the Ranger scale can have its performance monitored using an external printer or computer connected to the scale. The RS232 Interface is a bi-directional interface which enables the scale to communicate with a printer or computer equipped with an RS232 serial port.

  • Page 48: Print Test

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.9.1 Connecting the RS232 Interface (Cont.) RS232 Commands All communication is accomplished using standard ASCII format. Only the characters shown in the RS232 Command Table 3-3 are acknowledged by the scale. Invalid command response "ES" error indicates the scale has not recogonized the command.

  • Page 49: Repair Procedures

    CHAPTER 3 MAINTENANCE PROCEDURES REPAIR PROCEDURES This section describes how to change individual components of the Ranger scales. When doing this, please refer to the exploded view drawings and spare parts lists in section 4. Important: after replacing components, a functional check of the scale must always be carried out. 3.3.1 Replacing the Keypad Membrane •...

  • Page 50: Replacing The Internal Rechargeable Battery

    CHAPTER 3 MAINTENANCE PROCEDURES 3.3.3 Replacing the Internal Rechargeable Battery Ranger scales that include /1 or /3 in their model numbers contain an internal rechargeable battery. These batteries have a finite life expectancy and may require replacement at some time during the life of the scale.
  • Page 51 CHAPTER 3 MAINTENANCE PROCEDURES 3.3.3 Replacing the Internal Rechargeable Battery (Cont.) • The battery is installed against the inner housing wall that encloses the transducer compart ment. The battery is installed terminal side first with the positive, (“+”) terminal of battery towards the rear of the scale.

  • Page 52: Replacing The Analog Pcb

    CHAPTER 3 MAINTENANCE PROCEDURES 3.3.4 Replacing the Analog PCB • Unscrew the adjustable feet and remove them. • Undo the bottom plate retaining screws, removing them and the plate itself. • Disconnect weighing cell cable, connecting cable to the digital PCB and the AC adapter output cable from the analog PCB.

  • Page 53: Replacing The Display Mounting Plate

    CHAPTER 3 MAINTENANCE PROCEDURES 3.3.5.2 Replacing the Display Mounting Plate Note: In order to replace the display mounting plate, the keypad membrane must be removed. This cannot then be reused and must also be replaced. • Remove keypad membrane. • Push the 3 cantilever snaps at the front edge of the display mounting plate inwards to release the plate and remove it to the front.

  • Page 54: Final Reassembly

    CHAPTER 3 MAINTENANCE PROCEDURES 3.3.6 Final Reassembly • Connect the RS232 cable and the cable from the analog PCB to the digital PCB. • Engage the display unit under the rear snaps of the display mounting plate and then lower its front edge until it snaps into place.
  • Page 55 CHAPTER 3 MAINTENANCE PROCEDURES 3.3.8.1 Replacing a Strain Gauge Weighing Cell (Cont.) • Undo the bottom plate retaining screws, removing them and the plate itself. • Remove the weighing cell cable connector from the analog PCB. • Undo the 4 retaining screws for the overload plate. Remove the screws, washers and springs.

  • Page 56: Accessing And Using Service Mode

    CHAPTER 3 MAINTENANCE PROCEDURES 3.3.9 Accessing and Using Service Mode The service mode is part of the software in Ranger scales, offering settings and procedures for scale maintenance. With certified scales, direct access to service mode is blocked. 3.3.9.1 Accessing Service Mode with Scales that are not Certified With scales that are not certified, service mode can be accessed at any time by pressing the appropriate buttons: •...

  • Page 57: Accessing Service Mode

    CHAPTER 3 MAINTENANCE PROCEDURES 3.3.9.3 Accessing Service Mode Service mode is accessed using the PRINT UNITS and TARE buttons. PRINT UNITS skips the displayed block, or the displayed setting within a block, and causes the next block or setting to appear. It is equivalent to saying “No”. G/N/T MENU selects the displayed block for service work, or activates the current setting within a block, and is therefore equivalent to saying “Yes”.

  • Page 58: Working In Service Mode

    CHAPTER 3 MAINTENANCE PROCEDURES 3.3.9.5 Working in Service Mode Settings in service mode may only be made by qualified personnel. The wrong settings could result in the scale not functioning correctly! Viewing the A/D converter signal (ramp) In this block you can view the signal at the internal analog/ digital converter, enabling you to check the converter and the weighing cell for good working order.
  • Page 59 CHAPTER 3 MAINTENANCE PROCEDURES 3.3.9.5 Working in Service Mode (Cont.) Specifying weighing range If the analog PCB is replaced, it is necessary to specify the weighing range, because the EEPROM on the PCB is set to a default value at the factory (15 kg dual-range scale). It is also necessary to set the weighing range if a weighing cell of a different capacity is installed.
  • Page 60 CHAPTER 3 MAINTENANCE PROCEDURES 3.3.9.5 Working in Service Mode (Cont.) Correcting linearity errors Correct calibration ensures that the displays at the zero point and the calibration point correspond exactly to the loads placed on the scale. Ideally, this should be the case over the entire weighing range.
  • Page 61 CHAPTER 3 MAINTENANCE PROCEDURES 3.3.9.5 Working in Service Mode (Cont.) Calibration As well as calibration itself, the preload is specified in this block. Calibration in service mode does not involve a plausibility check for the calibration weight used, but always accepts the load placed on the pan as correct.
  • Page 62 CHAPTER 3 MAINTENANCE PROCEDURES 3.3.9.5 Working in Service Mode (Cont.) • The message “done” followed by "End"appears in the display to confirm that calibration has been successfully concluded. • Press the G/N/T/ MENU button, "Store?" appears, press G/N/T/ MENU button to store new calibration data. 3.3.9.6 Quitting Service Mode In the last service mode block you can decide whether you want to quit service mode or make further settings.

  • Page 63: Chapter 4 Data Tables

    CHAPTER 4 DATA TABLES 4.1 INTRODUCTION This section of the manual contains technical data tables for certifiable, certified Ranger scales and non-certifiable Ranger scales. Tables are also included for preload information and geographical adjustment information. 4.1.1 Certifiable and Certified Ranger Scales with Strain Gauge Weighing Cells The following data apply to all certifiable or certified Ranger scales with strain gauge weighing cells, regardless of platform size.

  • Page 64: Data For Noncertifiable Ranger Scales

    CHAPTER 4 DATA TABLES 4.1.2 Noncertifiable Ranger Scales with Strain Gauge Weighing Cells The following data apply to all noncertifiable Ranger scales with strain gauge weighing cells, regardless of platform size. Table 4-2. DATA FOR NONCERTIFIABLE RANGER SCALES Scale capacity 15kg 35kg 60kg...

  • Page 65: Overview Of Weighing Cells And Preloads

    CHAPTER 4 DATA TABLES 4.1.3 Overview of Weighing Cells and Preloads TABLE 4-3. STRAIN GAUGE WEIGHING CELLS Ranger Weighing pan Weigh- Replacement Preload Preload Total of load Mechanical Preload reserve Cellcapacity model (mm) cell no. load plate weighing plate support preload switch-on zero (kg)

  • Page 66: Geographical Adjustment Values

    CHAPTER 4 DATA TABLES 4.1.4 Geographical Adjustment Values TABLE 4-4. RANGER GEOGRAPHICAL ADJUSTMENT VALUES Elevation above sea level in meters 1300 1625 1950 2275 2600 2925 3250 Geographical latitude in 1300 1625 1950 2275 2600 2925 3250 3575 the northern or southern Elevation above sea level in feet hemisphere in degrees 1060...

  • Page 67: Chapter 5 Drawings And Parts Lists

    If further technical information is needed, in the United States call toll-free 1-800-526-0659 between 8.00 a.m. and 4.00 p.m. EST. An Ohaus factory service technician will be available to provide assistance. Outside the U.S.A., please contact:...
  • Page 68 CHAPTER 5 DRAWINGS AND PARTS LISTS...

  • Page 69: Top Components, High Capacity Scale (Strain Gauge) Shown

    CHAPTER 5 DRAWINGS AND PARTS LISTS M6 X 30 C'SUNK TORX Figure 5-1. Top Components, High Capacity Scale (Strain Gauge) Shown. ITEM NO. QUANTITY PART NO. DESCRIPTION 21203437 Platform (240 x 350), (Ranger 12kg, 30kg and 60kg) 21203073 Rubber shock absorber 21203431 Label, Function, (Ranger, Weigh, Dry, 12kg 30kg and 60kg) 21203429...

  • Page 70: Switch Actuators, High Capacity Scale (Strain Gauge) Shown

    CHAPTER 5 DRAWINGS AND PARTS LISTS Figure 5-2. Switch Actuators, High Capacity Scale (Strain Gauge) Shown. ITEM NO. QUANTITY PART NO. DESCRIPTION 21203119 Switch Actuator, (Ranger, Weigh, Dry) 21203120 Switch Actuator, (Ranger, Count)

  • Page 71: Bottom Components, High Capacity Scale (Strain Gauge) Shown

    CHAPTER 5 DRAWINGS AND PARTS LISTS TX20 TOOL TX20 TOOL TX30 TOOL TX8 TOOL Figure 5-3. Bottom Components, High Capacity Scale (Strain Gauge) Shown.
  • Page 72 CHAPTER 5 DRAWINGS AND PARTS LISTS ITEM NO. QUANTITY PART NO. DESCRIPTION 21203434 Feet, (Ranger, 12kg, 30kg and 60kg) 21203151 Load Cell, (Ranger, 12kg) 21203152 Load Cell, (Ranger, 30kg) 21203153 Load Cell, (Ranger, 60kg) 21203167 Cable Analog PCB, 300mm, (Ranger, 12kg, 30kg, 60kg) 21203166 Clamp, Digital PCB, (All Ranger), Also included in Hardware Kit 212 21203092...

  • Page 73: Power Pack, High Capacity Scale Shown

    CHAPTER 5 DRAWINGS AND PARTS LISTS M4 X 6 PAN HEAD Figure 5-4. Power Pack, High Capacity Scale Shown. ITEM NO. QUANTITY PART NO. DESCRIPTION 21203168 Cable, RS232 Internal, (All Ranger) 21203184 Double sided tape, (All Ranger) 21203122 AC Adapter, US Plug, (All Ranger) 21203123 AC Adapter, US Plug, (All Ranger) 21203124...

  • Page 74: Weigh Display

    CHAPTER 5 DRAWINGS AND PARTS LISTS Figure 5-5. Weigh Display. Figure 5-6. Count Display. ITEM NO. QUANTITY PART NO. DESCRIPTION 21203119 Switch Acutator, (Ranger Weigh Dry) 21203120 Switch Acutator, (Ranger Count) 21203134 LCD, (Ranger Weigh, Dry) 21203135 LCD, (Ranger Count) 21203136 Backlighting, (Ranger Weigh Dry) 21203137...

  • Page 75: Top Components, Low Capacity Scale (Strain Gauge) Shown

    CHAPTER 5 DRAWINGS AND PARTS LISTS Figure 5-7. Top Components, Low Capacity Scale (Strain Gauge) Shown. ITEM NO. QUANTITY PART NO. DESCRIPTION 21203438 Platform (200 x 240), (Ranger 3kg and 6kg) 21203073 Rubber shock absorber 21203432 Label, Function, (Ranger Weigh, Dry, 3kg and 6kg) 21203430 Label, Function, (Ranger Count, Dry, 3kg and 6kg)

  • Page 76: Switch Actuators, Low Capacity Scale Shown

    CHAPTER 5 DRAWINGS AND PARTS LISTS Figure 5-8. Switch Actuators, Low Capacity Scale Shown. ITEM NO. QUANTITY PART NO. DESCRIPTION 21203119 Switch Actuator, (Ranger Weigh, Dry) 21203120 Switch Actuator, (Ranger Count) 5-10...

  • Page 77: Bottom Components, Low Capacity Scale (Strain Gauge) Shown

    CHAPTER 5 DRAWINGS AND PARTS LISTS TX20 TOOL TX30 TOOL TX20 TOOL TX8 TOOL Figure 5-9. Bottom Components, Low Capacity Scale (Strain Gauge) Shown. 5-11...
  • Page 78 CHAPTER 5 DRAWINGS AND PARTS LISTS ITEM NO. QUANTITY PART NO. DESCRIPTION 21203434 Feet, (Ranger, 3kg and 6kg) 21203143 Load Cell, (Ranger, 3kg) 21203144 Load Cell, (Ranger, 6kg) 21203164 Cable Analog PCB, 110mm, (Ranger, 3kg, 6kg) 21203166 Clamp, Digital PCB, (All Ranger), Also included in Hardware Kit 212 21203092 PCB, Analog, (All Ranger) 21203096...

  • Page 79: Power Pack, Low Capacity Scale Shown

    CHAPTER 5 DRAWINGS AND PARTS LISTS M4 X 6 PAN HEAD Figure 5-10. Power Pack, Low Capacity Scale Shown. ITEM NO. QUANTITY PART NO. DESCRIPTION 21203168 Cable, RS232 Internal, (All Ranger) 21203184 Double sided tape, (All Ranger) 21203122 AC Adapter, US Plug, (All Ranger) 21203123 AC Adapter, US Plug, (All Ranger) 21203124...

  • Page 80: Drawings

    CHAPTER 5 DRAWINGS AND PARTS LISTS 5.2 MISCELLANEOUS PARTS ITEM NO. QUANTITY PART NO. DESCRIPTION 21203232 Replacement 12v Battery, (All Ranger) 21203105 Replacement 12V Battery Charging PCB, (All Ranger) 21203404 Hardware Kit (All Ranger) Includes: countersunk torx screw M3 x 8 countersunk torx screw M3 x 10 countersunk torx screw M6 x 30 countersunk torx screw M4 x 10...
  • Page 82 SERVICE MANUAL - RANGER SCALES P/N 80250926...

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