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KERN 770-12 - User Manual

KERN 770-12
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68
770/GS/GJ-BA-defsi-0023
E
KERN 770/GS/GJ
Version 2.3 04/2000
Operating Instructions
Electronic Precision Balance
Contents
1
OPERATING ELEMENTS 69
1.1
I
MPORTANT
I
NSTRUCTIONS
75
1.2
G
ETTING STARTED
76
1.2.1
Installation of the weighing chamber 76
1.2.2
Connecting the Balance to AC Power 78
1.2.3
Safety Precautions 79
1.2.4
Connecting Electronic Peripheral Devices 79
1.2.5
Levelling the Balance Using the Level Indicator 79
1.3
O
PERATING THE
B
ALANCE
80
1.3.1
Warm-up Time 80
1.3.2
Turning the Balance On and Off (Standby Mode) 80
1.3.3
Self-Test 80
1.3.4
Taring 81
1.3.5
Simple Weighing (Weight Determination) 81
1.4
A
DJUSTING
(
FORMERLY
C
ALIBRATION
) 82
1.4.1
Internal Adjusting for Balances with a Built-in Adjusting Weight 82
1.4.2
External Adjusting 83
1.4.3
Blocking the Adjusting Functions 83
1.5
D
ATA
I
NTERFACE
84
1.6
B
ELOW
B
ALANCE
W
EIGHING
85
1.7
A
NTI
-
THEFT
L
OCKING
D
EVICE
85
1.8
T
ROUBLESHOOTING
G
UIDE
86
1.9
C
ARE AND
M
AINTENANCE
87
1.9.1
Cleaning 87
1.9.2
Safety Inspection 87
2
DECLARATIONS OF CONFORMITY 88
3
BALANCE OPERATING MENU 90
3.1
C
HANGING
M
ENU
C
ODE
S
ETTINGS
90
3.1.1
Accessing the Menu 91
3.1.2
Reset Function - Undoing All Menu Code Changes 92
3.2
B
ALANCE
O
PERATING
P
ARAMETERS
93
3.2.1
Adapting the Balance to Ambient Conditions 93
3.2.2
Standard Weighing Mode - Manual Filling Mode 93
3.2.3
Stability Range 93
3.2.4
Tare Parameter 94
3.2.5
Auto Zero Function 94
3.2.6
Adjusting and Linearisation Functions Using CAL 94
3.3
U
NIT
C
ONVERSION
95
3.3.1
Weight Units 95
3.4
I
NTERFACE
P
ARAMETER
S
ETTINGS
96
3.4.1
Baud Rate 96
3.4.2
Parity 96
3.4.3
Number of Stop Bits 96
3.4.4
Handshake Mode 96
3.5
D
ATA
I
NTERFACE
97
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KERN 770-12 Specifications

General IconGeneral
BrandKERN
Model770-12
CategoryScales
LanguageEnglish

Summary

Important Instructions for Balance Operation

Ambient Conditions for Optimal Performance

Provides guidance on optimal environmental settings for balance accuracy and longevity.

Getting Started with Your Balance

Weighing Chamber Installation

Details on assembling the weighing chamber components for different balance models.

Connecting the Balance to AC Power

Instructions for safely connecting the balance to a power source using the AC adapter.

Essential Safety Precautions

Essential safety measures to follow when operating the balance and connecting peripherals.

Operating the Balance

Warm-up Time Requirements

Specifies the minimum warm-up period required for accurate results after power connection or outage.

Turning the Balance On and Off

Describes the procedure for powering the balance on, off, or placing it in standby mode.

Self-Test Procedure Explanation

Explains the automatic self-test sequence performed when the balance is powered on.

Taring Function

Details on how to zero the weight display to determine net weight accurately.

Simple Weighing (Weight Determination)

Procedure for determining the weight of a sample placed on the weighing pan.

Adjusting and Calibration Procedures

Internal Adjusting Process

Steps for calibrating the balance using its built-in adjusting weight.

External Adjusting Process

Procedure for calibrating the balance using an external adjusting weight.

Blocking Adjusting Functions

How to disable the balance's adjusting and calibration functions via menu code.

Data Interface

Below Balance Weighing

Anti-theft Locking Device

Troubleshooting Guide

Care and Maintenance

Cleaning Procedures

Steps for safely cleaning the balance using mild detergents and appropriate tools.

Safety Inspection Guidelines

Guidelines for performing safety checks on the balance and its AC adapter.

Declarations of Conformity

Balance Operating Menu

Changing Menu Code Settings

Instructions on how to navigate and modify settings within the balance's operating menu.

Accessing the Menu

Detailed steps to enter and navigate the balance's operating menu system.

Reset Function for Menu Settings

Procedure to revert all menu code settings back to their original factory defaults.

Balance Operating Parameters

Adapting to Ambient Conditions

Configuring the balance to match prevailing environmental conditions for optimal performance.

Standard Weighing Mode Settings

Settings for standard operation versus manual filling mode for compensation of fluctuations.

Stability Range Settings

Adjusting the criteria for the stability symbol to remain displayed based on weight variation.

Tare Parameter Settings

Defining when the balance performs the taring operation, either anytime or after stability.

Auto Zero Function

Enabling or disabling the automatic taring of minor zero point changes.

Adjusting and Linearisation Functions

Overview of menu codes for activating external/internal adjusting and linearisation.

Unit Conversion

Weight Units Selection

Guide to selecting and converting between various weight units using the F key.

Interface Parameter Settings

Baud Rate Configuration

Setting the data transmission speed (baud rate) for the interface.

Parity Settings

Configuring the parity bit for data transmission (Mark, Space, Odd, Even).

Number of Stop Bits

Setting the number of stop bits for data transmission (1 or 2).

Handshake Mode Configuration

Defining the handshake protocol (software or hardware) for data communication.

Data Interface Parameters

Data Output Parameter Configuration

Configuring data output based on stability or print requests.

Auto Print Function Control

Controlling automatic data output, including stopping and starting the function.

Data Output at Defined Intervals

Setting intervals for automatic data output based on display updates.

Automatic Taring after Data Output

Enabling automatic taring after data output for sequential weighing.

Data ID Codes

Using ID codes to identify different types of data output, such as net weights.

Automatic Tare Memory Output

Selecting values from tare memory for automatic output.

Additional Functions

Application Programs

Tare Memory Program

Functionality to store tare weights for subsequent use and identify stored values.

Practical Example: Net Total

Demonstrates weighing multiple components and calculating their total net weight.

Weighing in Percent Application

Application for obtaining weight readouts as a percentage of a reference weight.

Practical Example: Residual Weight Determination

Step-by-step guide for determining residual weight in percent, often for moisture analysis.

Counting Program

Function for converting weights into piece counts based on a reference sample weight.

Practical Example: Counting Small Parts

Illustrates how to count bulk quantities of items with the same weight.

Animal Weighing;Averaging Program

Program for weighing living animals or under unstable conditions using averaging.

Delay Start for Animal Weighing

Configuring delayed start criteria for averaging based on sub-weight differences.

Changing Number of Sub-weighing Operations

Adjusting the count of individual weighings used for the averaging calculation.

Practical Example: Automatic Animal Weighing

Demonstrates weighing animals using the automatic start mode with averaging.

Practical Example: Manual Animal Weighing

Illustrates weighing animals using the manual start mode with averaging.

Printout;Record for Adjusting Functions

ISO;GLP-compliant Printout or Record

Data Printout;Record (ISO;GLP-compliant)

Procedure for obtaining a compliant data record, including printout headings and data.

Data Printout for Application Programs

Including reference data in printouts for application programs like counting.

Interface Description

General Information on Interfaces

Introduction to the balance's RS 232 C interface for connecting external devices.

Interfacing Devices with the Balance

Notes on electrical connections and potential interference when connecting devices.

General Specifications for Interface

Technical details of the interface, including type, mode, standard, and transmission rates.

Data Output Formats

Details on the structure and content of data transmitted from the balance, with or without ID codes.

Special Codes in Data Output

Explanation of status and error codes outputted by the balance during data transmission.

Data Input Formats

Control Commands (Upper-case)

List and function of control commands using upper-case letters or special characters.

Control Commands (Lower-case)

List and function of control commands using lower-case letters.

Synchronisation and Data Output Parameters

Activating Data Output Process

Methods to activate data output, either automatically or via print command.

Automatic Data Output Settings

Configuration for 'auto print' mode, including output at defined intervals or stability.

Interface Parameter Settings

Pin Assignment Chart

Cabling Diagram

Visual representation of the wiring diagram for interfacing computers or peripherals.

Specifications

Supplement - Overview of All Menu Settings

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