DCELL In-Cell Strain Gauge to Digital Data Converter

 
 

Description

 

The DCELL is a high performance digital signal conditioner for the precision measurement of strain gauge based transducers. It has been designed to fit inside the majority of sensors, providing a 'digital' load cell with the benefit of very high stability and an RS485 output.

LCM Systems offer the DCELL as a standalone product or built into most of our load cells. Including the DCELL into a load cell enables the building of very high accuracy load cells, using the built in linearization and temperature compensation facilities. LCM Systems can also supply PC based software packages, specially written to interface with DCELL based load cells and pressure transducers. Please contact our technical department to discuss your requirement.

For applications where it is not possible to fit the DCELL within the transducer, there is an in line housing available (model ILE).

 

Features

 

  •  'In cell' data convertor
  •  Baud rates to 230k
  •  Diagnostics LED
  •  High speed to 500 Readings/Sec
  •  Low profile to fit in very small spaces
  •  Noise Immunity 5x heavy industrial level
  •  Operating voltage (5.4 - 18Vdc)
  •  Peak and trough recording
  •  Programmable dynamic filter
  •  Real mV/V calibration
  •  Remote shunt calibration
  •  RS485 output
  •  Simple mounting using M2 screw
  •  Strain gauge bridge input
  •  Very high stability
  •  ±15KV ESD protected
 

Specification

 

 

Dimensions

 

 

Options

 

  •  Temperature Measurement Resolution (0.1degC) and Temperature Measurement Accuracy (1oC)
 

Applications

 

  •  High accuracy Aircraft Weighing
  •  Crane weighing, using LDD-LITE large digit display
  •  Centre of Gravity PC based systems
  •  Condition and safety monitoring systems
 
 

 

DCELL In-Cell Digital Strain Gauge to Data Converter  

 

DCELL

 

                 ► Simple mounting using M2 screw

                 ► Connections via plated through holes

                 ► Low profile to fit in very small apertures

                 ► Baud rates to 230k

                 ► High speed to 500 Readings/Sec

                 ► ±15KV ESD protected

                 ► Real mV/V calibration

                 ► Noise Immunity 5x heavy industrial level

                 ► Diagnostics LED

                 ► Remote shunt calibration

                 ► Very high stability

                 ► Peak and trough recording

                 ► Programmable dynamic filter

                 ► Operating voltage (5.4 - 18Vdc)

 

The DCELL is a high performance digital signal conditioner for the precision measurement of strain gauge based transducers. The Micro Miniature PCB is designed to fit inside the majority of sensors, providing a 'digital' load cell with the benefit of very high stability and an RS485 output. LCM Systems offer the DCELL as a standalone product or built into most of our load cell based products. Including the DCELL into load cell based product enables the building of very high accuracy load cells, using the built in linearization and temperature compensation facilities. LCM Systems can also supply PC based software packages, specially written to interface with DCELL based load cells and pressure transducers. Please contact our technical department to discuss your requirements. For applications where it is not possible to fit the DCELL within the transducer, there is an in line housing available (Model ILE).

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Product

DLCH High Stability

DLCS Industrial Stability

 
Description Min Typ Max Min Typ Max Units
 Bridge Excitation 4.5 5 5.25 4.5 5 5.25 VDC
 Bridge Impedance 320 350 5000 320 350 5000 Ohms
 Sensor Impedance (18v supply) 320 350 5000 320 350 5000 Ohms ∆
 Sensor Impedance (12v supply) 120 350 5000 120 350 5000 Ohms ∆
 Bridge Sensitivity -3   +3 -3   +3 mV/V
 Offset Temperature Stability   1 4   5 10 ppm/°C
 Gain Temperature Stability   3 5   30 50 ppm/°C
 Offset Stability with time   0.002 0.008   0.0035 0.016 %FR
 Gain Stability with time     30     300 ppm of FR/1st year
 Non Linearity   0.0005 0.0025   0.0005 0.0025 %FR
 Internal Resolution   16 Million     16 Million   Counts/Divisions
 Resolution @ 1Hz (Noise Stable)   400,000     100,000   Counts/Divisions
 Resolution @ 10Hz (Noise Stable)   120,000     40,000   Counts/Divisions
 Resolution @ 100Hz (Noise Stable)   50,000     10,000   Counts/ Divisions
 Resolution @ 500Hz (Noise Stable)   18,000     5,000   Counts/ Divisions

Optional

 Temp Measurement Resolution 0.1 0.1 °C
 Temp Measurement Accuracy 1 1 °C
 Notes  From original offset at any time Stability over 100 seconds Subject to supply voltage (see electrical specifications)

Electrical

  Min Typ Max Min Typ Max Units
 Power Supply Voltage 5.4 12 18 5.4 12 18 Vdc
 Power Supply Noise/Ripple     100     100 mVac pk-pk
 Supply Current (350R Bridge)   45 60   45 60 mA
 Power@10V Supply (350R Bridge)   350     350   mW
 Excitation System   4 wire     4 wire    

Communications

  Min Typ Max Min Typ Max Units
 RS485 Data Rate 2400   230k 2400   230k Baud
 Protocols  ASCII, MANTRABUS II, Modbus RTU

CE & Environmental

 Storage temperature  -40 to +85ºC
 Operating temperature  -40 to +85°C
 Relative humidity  95% maximum non-condensing
 Safety/Low Voltage Directive  73/23/EEC amended by 93/68/EEC
 BS EN 61010-1:2001, IEC 1010-1-1990
 EMC Directive  89/336/EECBasic Standard
 BS EN 61326:1998
 EMC Emissions  BS EN 55011:1998
 EMC Immunity  BS EN 61000-42:1995BS EN 61000-4-3:2002
 BS EN 61000-4-3:2002
 BS EN 61000-4-4:2004
 BS EN 61000-4-11:2004
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dcell drawing
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Click here to download - DCELL Datasheet
Click here to download -  DCELL Instruction Manual
The DCELL offers a RS485 digital output (in various protocols). LCM Systems can offer the DCELL as part of a complete system, including sensors (and can be integrated into many sensors) and bespoke software, written specifically for your application. The software is usually developed using the Visuallink software platform. Contact LCM Systems to discuss your software/application requirements.
                 ►  High accuracy Aircraft Weighing
                 ► Crane weighing, using LDD-LITE large digit display
                 ► Centre of Gravity PC based systems
                 ► Condition and safety monitoring systems
 
 

 


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