Load Cell Amplifier with Relay & Data Output (LCA15)
- Load cell amplifier for single or multiple load cell applications
- 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 set points SPCO relay outputs
- RS485 RS232 digital data output for communications and printing
- For Din rail option see LCB
- The LCA15 shown in the photo has the transparent lid option (LTL)
- A solid grey ABS case is a standard LCA15
The Load Cell Amplifier (LCA15) 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 weight indicator offers options of local or remote LCD displays, isolated 4-20mA 0-10V analogue outputs, relay outputs for control or alarm functions and in-flight compensation commonly used in silo bag filling applications and crane overload alarms. The RS232 or RS485 options provide for digital communications (including setup) and can support label or ticket printers.
IP65 bulkhead mounting ABS case - also available as a DIN rail or PCB module - model LCB
A Fast LCA15F is also available with a 10 mS strain gauge input. Please enquire here for more details and pricing.
For a PCB module version, see model LCB Weighing Amplifier / Digitiser
For wireless radio telemetry options please see T24 Wireless Telemetry.
Analogue and data output, set point and display capabilities AC or DC powered, IP65 NEMA 4 protected.
Need to know more about our load cell amplifiers? See our comprehensive information and application suggestions Load Cell Amplifier
| 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 |
| PCB Only (Eurocard) (LCB) | 100 x 160 X 57mm for rack or customers enclosure |
| 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 |
Documents
Software
Product order options
Please read the following before selecting the options for this product:
LCA15 Base Unit - Standard Instrument with 4-20mA/0-10 Analogue Outputs for ABS Case.
Starting with the base model LCA15, select the options that you need to configure the device to meet your needs.
| Base Unit | Code |
|---|---|
| LCA15 Field Mounting Loadcell Amplifier | LCA15 |
| Comms | Code |
| (LIMITED STOCK please call for availability) 20mA Current Loop for MODBUS RTU, ASCII & MANTRABUS | LC1 |
| RS485/232 Communicaions for MODBUS, RTU, ASCII & MANTRABUS | LC3 |
| Relay Output | Code |
| Relay Output 2 x SPCO 5A | LR1 |
| Power Supplies | Code |
| AC Power Supply 110/120V, or 220/230V AC) | LS1 |
| DC Power Supply 9-32V DC | LS3 |
| Display | Code |
| On Board Display Programmer | LP1 |
| Extended Mounting | Code |
| Transparent Plastic Lid for LAB (IP65 enclosure) | LTL |
| Accessories | Code |
| Remote Hand Held Programmer | LP2 |
These are the following industries and applications in which this product has been used:
- Industrial Processing - Tobacco Processing
Digital Weighing Indicator for Panel Mounting
Supplying a global market
