Load Cell Amplifier and Digitiser PCB (LCB)
- Simple one pass auto calibration
- Excitation 10V 160mA for up to 6 Load Cells
- Sensitivity from 0.5 to 200 mV/V
- 6 wire input to compensate for barrier and cable losses
- Full digital set-up and calibration using keypad or PC
- Auto tare and peak hold actioned by volt-free contacts
- Fully isolated 4-20mA and 0-10V analog outputs
- 2 Setpoints SPCO relay outputs
- RS485 RS232 Digital data output for communications and printing
- PCB (LCB shown in main photo) options include various cases with or without DIN rail mounting (shown in photos on left)
The LCB Weighing Amplifier / Digitizer OEM PCB is a very flexible digital signal conditioning amplifier for single or multiple load cell applications, offering very easy one-pass calibration and fast setup.
This versatile load cell indicator offers options of local or remote LCD displays, isolated analogue outputs, latching relays or digital outputs for control or weight alarm functions and in-flight compensation for filling applications.
The RS232 or RS485 options provide for digital communications (including setup) and can support label or ticket printers.
For a bulkhead cased version see model LCA15 Load Cell Amplifier and Digitiser Module
For a rack mounted version, see model RCA Rack Mounted Amplifier / Digitiser.
For wireless radio telemetry version, see model T24 ACM Radio Telemetry Strain Gauge or Load Cell Digitiser.
| Inputs | |
|---|---|
| The input is of the Load Cell/Strain Gauge type. With transducer excitation voltage of 9.6 volts @ 160mA to drive 6 x 350R bridges | |
| Compensation by ± sense wires for cable and safety barrier losses down to 3V excitation | |
| Load cell sensitivity is preset via DIL switches to 0.5, 0.8, 1.0 1.25, 1.5, 2.0, 2.5, 3.5, 5, 10, 20, 50, 100 or 200mV/V | |
| Initial offset is no greater than ± 0.15mV (15uV/V) which is cancelled during auto calibration | |
| Speed | is 10 readings per second with a digital filter to reduce speed |
| Accuracy | is 90 days ± 0.08% of reading, +/- 0.05% FSD being typical |
| Drift | is 0.002% per degree C @ 2.5mV/V typical |
| Resolution | 15 bit/ 4.5 digits |
| Contact Inputs | are available for auto tare, print and peak hold reset and are volt free |
| Analogue Outputs | |
| Drive | 4-20mA up to 1Kohm and 0-10 volts up to 2mA |
| Accuracy | 4-20mA + 0.15% of range, typical. 0-10V ±2% before calibration |
| Resolution | as for display up to 13 bits/4.5 digits. Settling time 350mS to within 1% of step change |
| Isolation | ±130V RMS or DC max to analogue input or any other port |
| Power Supplies | |
| LS1 | 110V-120V AC or 220/230V AC 50-60Hz 10W |
| LS3 | 9-32V DC 10W isolated |
| Data Retention/Protection | |
| Retention | 10 years for set up values, minimum of 100,000 write cycles |
| Protection of data and function(s) | Watchdog timer giving repeat auto resets. Impending power detection and hold off. Keypad security and time out |
| Other Options & Accessories | |
| 2 Set Points | Output through 5A 240V AC SPCO Relays, with a latching option |
| Communications Port | For data transfer or print via :- |
| RS485 | Enabling up to 25 units to be multi dropped |
| RS232 | For 1 to 1 connection and standard printer drive |
| Printer Operation | By closure of volt free contact |
| Baud Rates | 300, 600, 1200, 2400, 4800, 9600 (19200 MANTRABUS only) |
| Die Cast Case | Sealed to IP65 with external dimensions of 220 x 120 x 80mm max |
| Stainless Steel Case | Sealed to IP65, with external dimensions of 224 x 160 x 90mm |
| Environmental | |
| Storage Temperature | -20 to +70ºC |
| Operating Temperature | -10 to 50ºC |
| Relative Humidity | 95% maximum non condensing |
| CE Environmental Approvals | European EMC Directive 2004/108/EC, Low Voltage Directive 2006/95/EC |
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Product order options
Please read the following before selecting the options for this product:
LCB15 Standard Instrument with 4-20mA/0-10V Analogue Outputs. Signed 15 Bit 100mS update, without case.
Starting with the base model LCB select the options that you need to configure the device to meet your needs.
| Base Unit | Code |
|---|---|
| Load Cell Input Amplifer PCB Only | LCB |
| Inputs | Code |
| Fast Load Cell Input for Universal Amplifier Board | UAFLC |
| Outputs | Code |
| Universal Amplifier Fast Analogue Output | UAFAO |
| Comms | Code |
| 20mA Current Loop for MODBUS RTU, ASCII & MANTRABUS | LC1 |
| RS485 Comms | LC3 |
| Relay Output | Code |
| Relay Output 2 x SPCO 5A | LR1 |
| Power Supplies | Code |
| LCA15 AC Power Supply | LS1 |
| 9-30V DC Power Supply | LS3 |
| Display | Code |
| On Board Display Programmer | LP1 |
| Remote Hand Held Programmer | LP2 |
| Mounting Enclosure | Code |
| ABS Case with plain ABS Lid | LAB |
| ABS IP65 Case and Mountings | LAC |
| Die Cast Case with PG9 Glands 220 x 120 x 80mm | LDC |
| Stainless Steel Case 224 x 160 x 90mm | LSS |
| DIN Rail Mounting Fixture | D2 |
| Case and DIN Rail Mounting for DSJ4, LCA, UAB, JBA | D3 |
| Extended Mounting | Code |
| Transparent Plastic Case Lid for ABS Case (available with LAB) | LTL |
Panel Mount Weighing Indicator and Controller
Enclosure for 1 x DSC (Strain Gauge or Load Cell Digitiser Module)
