Rice Lake QB Series Operation Manual
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Rice Lake QB Series Operation Manual

Precision balance
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QB Series
Precision Balance
Operation Manual
42194

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Summary of Contents for Rice Lake QB Series

  • Page 1 QB Series Precision Balance Operation Manual 42194...

  • Page 3: Table Of Contents

    1.8 Powering Down the QB Series Balance ........
  • Page 4 Troubleshooting ......................... 25 Dimensions ..........................27 QB Series Limited Warranty........................28 QB Series Operation Manual...

  • Page 5: About This Manual

    RLWS AC adapter PN 42566 for 115 VAC or PN 42168 for 230 VAC use. Use of any other AC adapter can void the warranty. Unpacking and Inspection Each QB Series balance comes with the following components (see Figure 1-1 on page 2). • AC adapter •...

  • Page 6: General Care And Maintenance

    General Care and Maintenance To keep your QB Series balance operating properly, the device needs to be maintained and cared for. Keep the housing and platform clean by wiping them off with a soft damp cloth daily. If necessary, use a slight solution of water and dish soap to clean away stains and dirt.

  • Page 7: Installation Steps

    Installation Steps Use the following steps to properly install the QB Series balance: 1. Inspect the leveling legs and ensure that they are all completely retracted. 2. Place the balance down on a firm, level mounting surface. 3. Using the bubble level to the upper left of the display panel as a guide, adjust the leveling legs as necessary until the bubble is centered inside the bulls-eye of the bubble level (see Figure 1-2).

  • Page 8: Special Information

    In the event that the device fails to operate properly, contact your Rice Lake Weighing Systems dealer for assistance. Front Panel Figure 1-6 shows the QB Series keypad and key functions. Figure 1-7 on page 5 shows the LCD display segments display. Tare key. In weighing mode, used to tare weight.

  • Page 9: Powering Up The Qb Series Balance

    Powering Up the QB Series Balance Press and release the ON/OFF key to turn on the QB Series balance. 1. All display segments momentarily illuminate. 2. All display segments momentarily flash. 3. The device activates the default weighing mode and displays the symbol in the lower right corner of the display to indicate that weighments are displayed in grams.

  • Page 10: Weighing Operations

    QB Series balance. NOTE: There is no push-button conversion from one unit to another. The QB Series balance is capable of showing only one unit of measure during a weighing operation. Switching to another unit of measure requires a change in the set up procedure (see Section 2.2)

  • Page 11: General Weighing

    Weighing with a Tare The following section provides a step-by-step procedure on weighing with a tare using the QB Series balance. NOTE: Whenever the tare function is activated, the effective weighing range of the device is reduced by the value of the tare.

  • Page 12: Removing The Tare

    Weighing with the Comparator Function The QB Series balance is equipped with an onboard comparator function that determines how the weight of a commodity relates to a pre-determined over/under zone. This feature can help alleviate weighing errors and speed up the judgement-making process. Rather than reading a weight value and making a mental calculation as...

  • Page 13: Basic Over/Under Parameter Selection

    5. Release the key. The display changes to show either . If the display shows 1.SET.1 1.SET.2 1.SET.1 continue with step 6 below. If the display shows , press and release the key once to change the 1.SET.2 value to , then continue with step 6 below.

  • Page 14: Reference Sample Method

    2.8.2 Digital Reference Method Use the following steps to establish upper and lower comparison limits in the QB Series balance using the digital reference method. 1. Ensure that you have followed the instructions in Sections 2.7.1 and 2.7.2 on page 9, then continue below.

  • Page 15: Weighing With The Comparator Function

    OVER UNDER ACCEPT indicator illuminated. 2.8.4 Deactivating the Comparator Function Use the following steps to deactivate the comparator function in the QB Series balance. 1. Press and hold the key until the word is displayed. Func 2. Release the key. The display changes to show 1.SET.1...

  • Page 16: Operating The Counting Function

    To program the average piece weight, use the steps outlined below. NOTE: The QB series balance can determine the average piece weight by evaluating initial samples of 10, 30, 50, or 100 pieces. We strongly recommend that you always use a sample of 100 pieces to ensure the most uniform sample piece calculation resulting in the most accurate counting operation possible based on the samples provided.

  • Page 17: Using The Apwr (Automatic Piece Weight Refinement) Program

    Using the APWR (Automatic Piece Weight Refinement) Program The APWR program is an exclusive feature of the QB Series. When utilized, its unique capabilities refine the average piece weight as often as desired to take into consideration the largest sample possible. As the average piece weight of a commodity is refined, the overall counting results are dramatically improved.

  • Page 18: Span Calibration

    Span Calibration To achieve optimum accuracy from your QB Series balance, it should be calibrated on a regular basis in the environment in which it is normally used. If the device is moved to another physical environment, recalibrate the device before using it. A few extra moments invested with this section will ensure virtually error-free performance of the device.

  • Page 19: Function Parameters

    Function Parameters The parameter menu allows you to activate or deactivate certain features and functions of the QB Series balance. The following section provides information on the functions of the QB and how to view and change those functions. Table 4-1 below describes the various functions of the QB.
  • Page 20 (parity bit available only in 7-digit format) interface option is Even set to ON) 7.UN Unit of measure gram kilogram carat decimal ounce pound troy ounce pennyweight grain Hong Kong tael Singapore tael Taiwanese tael momme Table 4-1. Function List (Continued) QB Series Operation Manual...

  • Page 21: Viewing Parameters

    Viewing Parameters The following information provides a step-by-step procedure to view the parameters of the QB Series balance. 1. Turn the balance on (see Section 1.7 on page 5). 2. If the device does not show a value after the normal start sequence, press and release the key.
  • Page 22 11. To continue on to another function, return to step 9. 12. If you do not need to change another function, press the key to confirm your settings and return to the conventional weighing mode. QB Series Operation Manual...

  • Page 23: Specifications

    Specifications This section contains tables listing common specifications and model specific data for the QB Series balance. Table 5-1 below provides specifications of each of the models in the QB Series of balances. Unit of Measure (Display Symbol) QB-150E QB-300E...

  • Page 24: Rs-232C Specifications

    * Recommended ASTM Class 4. RS-232C Specifications The QB Series may be equipped with an optional RS-232C feature (PN 42174), which is compatible for communication with printers and computers. When the balance is connected directly to a printer, displayed data can be output either via the key on the balance, or automatically when certain conditions have been met.

  • Page 25: Rs-232C Commands

    5.1.2 RS-232C Commands One of the following two formats is selectable in the function setting (see Section 4.0 on page 15). 6-digit data format (Content: 14 words, including terminators; CR = 0DH, LF = 0AH) Table 5-3. RS-232C 6-digit Command Format 7-digit data format* *Note inclusion of D8.
  • Page 26 Commands that are sent before ACK or NAK are transmitted from the device are ignored. Input format command consists of four (4) words, including terminators (CR=0DH or LF=0AH) as follows: External tare command is as follows: CODE Contents 54h 20H Tare Command QB Series Operation Manual...

  • Page 27: Output Control Settings

    A 5-pin DIN connector for interfacing to other devices (see Figure 5-2 on page 24) is located on the rear of the QB Series balances equipped with the optional RS-232C interface. The balance does not output any data unless pin 2 is held in an ON state (+5 VDC to +15 VDC). Interfaces requiring the CTS handshake may tie pins 5, 4, and 8 on the computer side to defeat it.

  • Page 28: Accessories

    42171 Internal rechargeable battery for QB Series (incompatible with PN 42174 below) 42174 RS-232C interface for QB Series (incompatible with PN 42171 above) includes DIN-5 pin connector (cable not included) 42177 Glass breeze break for QB Series (scales with round weighing pans only)

  • Page 29: Troubleshooting

    Troubleshooting The following section contains a troubleshooting chart for the QB Series scale. Refer to this chart to locate causes and corrective actions to various conditions. Condition Cause Corrective Action Display does not • Wind or vibration is affecting scale •...
  • Page 30 • The calibration weight is less than 1/2 • Reinitiate calibration with a test mass equal full capacity to the nominal capacity of the balance • Consult your local Rice Lake Weighing Systems distributor 2-ERR • The data error exceeds 1% •...
  • Page 31 Dimensions Figure 7-1 below shows the dimensions of the QB Series balance. Ø Figure 7-1. QB Series Dimensions Dimensions...
  • Page 32 QB Series Limited Warranty Rice Lake Weighing Systems (RLWS) warrants that all RLWS equipment and systems manufactured and sold by RLWS and properly installed by an authorized RLWS Distributor or Original Equipment Manufacturer (OEM) will operate per written specifications as confirmed by the Distributor/OEM and accepted by RLWS. All systems and components are warranted against defects in materials and workmanship for five years.

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