KERN PLS Series User Manual

TALJG_A/TALSG_A/TPLJG_A/TPLSG_A-BA-e-2112 9
KERN PLJ 420-3F PLJ 720-3A PLJ 1200-3A
Product number / type TPLJG 420-3-A TPLJG 720-3-A TPLJG 1200-3-A
Weighing range (Max) 420 g 720 g 1200 g
Interval (d) 0.001 g 0.001 g 0.001 g
Reproducibility 0.001 g 0.001 g 0.001 g
Linearity ±0.003 g ±0,002 g ±0,003 g
Settling time (standard) 2 s 2 s 2 s
Minimum part weight when
counting the number of pieces in
laboratory conditions**
5 mg 1 mg 5 mg
Minimum part weight when
counting the number of pieces in
standard conditions**
50 mg 10 mg 50 mg
Heating time 4 h 4 h 8 h
Adjustment weight internal
Number of reference pieces
when counting the number of
pieces
10, 25, 50, 100, selected freely
Weight units
ct, g, gn, lb, mo, oz, ozt,
tl (Hong Kong), tl (Singapore, Malaysia), tl (Taiwan), pen
Power supply
230 V/50 Hz
(Euro) 9 VDC
230 V/50 Hz (Euro) 24 V DC
Operating temperature +15°C/+30°C
Air humidity max. 80% (non-condensing)
Equipment for the under-scales
weighing hanger
– attachment lug, serial equipment
Housing (W × D × H) mm 210 × 340 × 160
Wind breaker [mm]
internal: Ø 150, height 60
external: Ø 160, height 70
Scale plate (stainless steel) Ø 11 cm
(Net) weight kg
3.5 kg 4.9 kg 4.9 kg
Interface RS-232C
Contamination degree 2
Overvoltage category Category II
Installation height
above sea level
up to 4000 m
Location site Solely indoors

KERN PLS Series Specifications

General

Weighing plate material	stainless steel
Protection Class	IP65
Readability	0.1g
Reproducibility	0.1 g
Minimum part weight at piece counting	0.1 g
Permissible ambient temperature	40°C
Interface	RS-232

Summary

Technical Specification

Basic Instructions

Intended Use

Specifies the designed purpose and proper usage of the weighing scale.

Non-intended Use

Lists prohibited uses of the scale to prevent damage or erroneous results.

Basic Safety Instructions

Compliance with the Instructions Included in the User Manual

Emphasizes reading the user manual for safe and correct operation of the device.

Personnel Training

States that only trained personnel should operate and maintain the device.

Unpacking, Positioning and Start-up

Installation Place, Operation Place

Details the crucial factors for selecting a suitable location for accurate scale operation.

Unpacking and Check

Power Supply

Operation with Battery Supply (Solely the Model PLS 420-3F)

Adjustment

Adjustment Mode Selection

Guides the user through selecting the appropriate calibration mode for the scale.

Automatic Adjustment Using the Internal Weight

Describes how the scale automatically calibrates itself using its internal weight.

Adjustment Using the Internal Weight after the Model CAL Button is Pressed (Models ALJ/PLJ)

Explains manual adjustment using the internal weight by pressing the CAL button.

Adjustment Using the External Weight

Details the procedure for calibrating the scale using an external weight.

Changing the Weight of the Internal Calibration Weight

Outlines the process for modifying the value of the internal calibration weight.

Adjustment Report Display/Print

Verification

Covers the legal requirements and procedures for scale verification in the EU.

Basic Mode

Switching the Scale On and Off

Ordinary Weighing

Details the standard procedure for performing regular weight measurements.

Taring

Explains how to subtract the weight of a container or subtract the tare weight.

Weighing Using the Under-Scales Weighing Hanger

Main Menu “Applications”

Counting the Number of Pieces

Guides on using the scale to count identical items based on their average weight.

Determining Density Using the Equipment for the Under-Scales Weighing Hanger

Outlines the process for measuring density of solid bodies or liquids using specialized accessories.

Formulation

Guides on weighing ingredients for recipes in specific ratios.

Test Weighing

Describes the application for checking if weights fall within defined tolerance limits.

Determining the Percentage Value

Explains how to check sample weight against a reference weight in percentage terms.

Weighing Animals

Peak Value Function

GLP Function (Good Laboratory Practice)

Error Messages

Maintenance, Service and Disposal

Cleaning

Maintenance and Service

Help for Any Minor Failures

Ionizing Unit (Factory Option for KERN ALJ-A03)

Basic Safety Instructions

Lists essential safety precautions for using the ionizing unit.

Technical Specification

Start

Intended Use

Cleaning