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Weighing Indicator LD 5218 Print E-mail
LD-5218
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Product Description

The Weighing Indicator LD 5218 is a compact, powerful alphanumeric terminal, designed for numerous weighing applications, varying from a simple xed tare weighing operation to powerful truck in/out management systems. User friendly conguration and operation, hardware and software reliability, and legal-for-trade accuracy in an attractive enclosure ensure high performance to meet the most demanding needs

Basic Features

  • Approved for 10,000divisions
  • Up to 70 measurements per second
  • Alibi-memory for 10,000 records
  • Excitation for up to 10 strain gauge load cells, 350Ω each (or more)
  • Large, 16 character LCD display (14.5mm) with status annunciators
  • 27 keys membrane keyboard with tactile feedback
  • Single or dual interval / range
  • Analogue and digital ltering
  • Standard RS232 for PC or printer connection and RS232/RS485 interface with networking capability
  • Real time clock
  • 1 digital input (programmable as tilt input or to tare scale remotely or for other purposes)
  • 2 digital outputs (programmable as weight set points or as other control outputs)
  • Stainless steel enclosure  (IP65) or powder coated aluminium  (IP40)

Application

  • Weighbridges,  platform scales or dual scale applications  requiring weight indication and professional documentation
  • Piece counting (single or dual scale congurations)
  • Computer based weighing systems

Operating Keys

  • On / off-Zero scale  -  Preset tare key
  • Tare key
  • Tare recall key
  • Print key
  • 1st and 2nd weighing for weighbridge operations
  • Piece counting
  • Scale exchange key
  • Menu dialogue selection
  • Alphanumeric data entry keys
  • Front panel key lock capability

Options

  • Analogue output (current or voltage)
  • Second analogue input for second scale connection

Specifications

DISPLAY - KEYBOARD

DISPLAY: 16 character, LCD, backlit display, 14.5mm digit height
STATUS ANNUNCIATORS:
No motion, zero,  tare in use, net , scale in operation (#1 or #2 or SUM #1+2, if second scale connected), piece counting mode
KEYBOARD: Pseudo-alphanumeric menbrane keyboard of 27 keys, with tactile feedback
DECIMAL POINT SETTING: Between any digits of the weight display
WEIGHT DIGITS: 4, 5, 6 (set-up selectable)
DISPLAY STEP: 1, 2, 5, 10, 20, 50, 100, 200 (set-up selectable)

SCALE CALIBRATION & FUCTIONS

CALIBRATION: Digital calibration (deadload and span) via operator friendly, structured menu system. The weight display can be set to any capacity and resolution with 6 digits (subject to application and regulations). Calibration of  two analogue inputs (one standard and one optional) with individual coecients.Electronic calibration can also be performed via the m V/V output values of load cells.
WEIGHING FUNCTIONS: Automatic zero tracking, no motion detection, auto-zero on power-up, zero, tare (max tare eect =-Max), preset tare, net mode, multiple test functions
The two most signicant decades of the digital display are programmable from 1 up to 99 for the full scale range.  Single or dual interval / range, auto-switching between the different display steps.
FULL SCALE RANGE: Serial  EEPROM  for the storage of calibration data (64KB)
MEMORIES: Flash, tally-roll (Alibi) memory capable of  10,000 weight registrations (64KB). Real-Time-Clock.

A/D CONVERTER

TYPE: Sigma-Delta ratiometric with analogue and digital ltering (FIR & post ltering, rolling average)
CONVERSION RATE:3 up to 70 measurements per second (set-up selectable)
SENSITIVITY: 0.4μV/VSI for approved scales,   0.1μV/VSI for non-approved scales
ANALOGUE SIGNAL RANGE: -0.25 to 2mV/V  (-1.25mV  to  – 10mV)  or -0.25 to 4mV/V  (-1.25mV  to  – 20mV)
RESOLUTION:Internal 550,000 counts,   Display : 990,000  (selectable, in accordance with regulations)

CONTROL I/O

DIGITAL INPUT  (x1): 9-24 VDC,  positiv common, opto-isolated  to 2.5 KV, set up programmable
DIGITAL OUTPUTS: 24 VDC 10%, transistor (SOURCE) darlington, positiv common, max current 100 m A, opto-isolated to 2.5KV, set up programmable
Analogue ouput, current (0/4 -20m A) or voltage (0.02 -10V) (hardware selectable), resol. 16 bit

POWER SUPPLY

INOX VERSION: 85-265VAC, 50/60 Hz.  Alternatively  9 - 15 V DC via external source
ALUM VERSION: 85-265VAC, 50/60 Hz.  Battery back-up standard via internal rechargeable battery,  6V/3Ah

ENVIRONMENTAL CONDITIONS / CONSTRUCTION

EMC: According to OIML R76 and  EN 45501 requirements
OPERATING TEMPERATURE: -10oC to +40oC
STORAGE TEMPERATURE: -10oC to +70oC
HUMIDITY: 40- 90% RH, non condensing
HOUSING (INOX VERSION): Stainless steel, AISI 304, sealed to IP65. Dimensions (in mm): 252(L)x152(H)x62(W)
Powder coated aluminium, sealed to IP40.   Dimensions (in mm): 206(L)x140(H)x135(W)

LINEARITY & STABILITY

LINEARITY: Within 0.002 % of  full scale
LONG TERM  STABILITY: 0.005 % of full scale per year
TEMPERATURE COEF.: Deadload  2ppm / C,  Span  2ppm / C


LOAD CELL CONNECTION
NUMBER OF LOAD CELLS: Up to 10 strain gauge load cells, 350 Ω  each (or more, provided min input impedance =35Ω)
EXCITATION: +5V alternating polarity or  +5VDC (set-up selectable), with sense
CONNECTION TECHNIQUE: 6-wire technique
INTERFACES
SERIAL COM. PORT 1: RS232, non-programmable, 2400 baud , full duplex (continuous output, printer output, print on demand and Alibi modes
SERIAL COM. PORT 1: RS485, set-up programmable, 2400-57600  baud , half  duplex (continuous output,  remote printer output,  EDP and  master-slave protocols)
APPROVALS
ACCURACY CLASS III EU-Type approval for 10,000 divisions (approval Nr.:  DK 0199.27) & OIML R76