Weighing Indicator and Controller (SMW-HR)
- High Resolution of 500,000 counts
- Multi-point linearisation capability (4 points)
- 12 Calibration profiles stores for 12 different sensors
- Provides excitation of 10V @ 160mA to drive up to 6 x 350 Ohm load cells
- Six wire measurement system can compensate for zener barrier losses
- Fully digital set-up and calibration using built-in LCD display and keypad or comms
- Auto tare and peak hold actioned by volt-free contacts
- Setpoints and event handling using digital inputs and 2 x SPCO relays
- Fully isolated 4-20mA and 0-10V analog outputs
- RS232 or RS485 communications for setup, data transfer or label/ticket printing
- IP65 / NEMA4 ABS housing for bulkhead mounting
- AC or DC power supply options
The SMW High Resolution Weighing Indicator/Controller is a very flexible digital load cell indicator and display system in a bulkhead mounting format, optimised for single or multiple load cell and weighing applications.
The digital architecture offers very easy one-pass calibration and fast setup. This versatile digital load cell amplifier offers options of isolated analogue outputs, latching relays or digital outputs for control or alarm functions.
The RS232 or RS485 options provide for digital communications (including setup) and can support label or ticket printers.
This HR version incorporates a very high resolution (24-bit) A-D converter and therefore offers an internal resolution of 500,000 counts. This additional performance is of benefit for multi-range scales and for applications where the live weight is very small in relation to the dead weight (tare weight).
For a panel mount or DIN rail mount version, see model ADW15 Weighing Indicator / Controller,
For a wireless telemetry version, see models T24-SO and SERIALDIS Radio Telemetry Display Module
| Inputs | |
|---|---|
| Strain Gauge Input | The input is of the load cell/strain gauge type. A transducer excitation voltage of 9.6 volts @ 160mA |
| 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 |
| Zero Temperature Coefficient | 0.0005% FSO/ºC typical with 2.5 mV/V sensitivity selected |
| Span Temperature Coefficient | <0.0017% reading/ºC |
| Excitation | 9.6V DC nominal, 150mA maximum |
| Repeatability | ±0.002% reading over 90 days |
| Display Update Rate | Programmer keypad selectable between 0.1 and 25.5 seconds
|
| Display Average | Set by programmer keypad, up to 64 standard up dates
|
| Measurement Resolution | 1:500,000 |
| Analogue Outputs | |
| Type | 4-20mA and 0-10V |
| 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, 230V AC SPCO relays, with programmable latching inversion, hysteresis, In Flight (RL1) |
| Communicatiosn Port | For data transfer or print via :- |
| 20mA Loop | Enabling up to 254 units to be multi dropped to 1 x RS232 via IF25 interface(s) |
| RS485 | Enabling up to 25 units to be multi dropped
|
| RS232 | For 1 to 1 connection or standard printer drive |
| Printer Operation | By front panel function key
|
| Baud Rates | 300, 600, 1200, 2400, 4800, 9600 (19200 MANTRABUS only) 9600 for MODBUS |
| DIN Rail Mounting | For the motherboard |
| DC Powering | 9-32V DC
|
| Remote Mounting | Display module, for panel mounting
|
| Back Lighting | For the LCD display |
| Environmental | |
| Storage Temperature | -20 to +70ºC |
| Operating Temperature | -10 to 50ºC
|
| Relative Humidity | 95% maximum non condensing |
| CE Environmental | 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:
The SMW-HR is a PCB is a High Resolution load cell input module, Expanded RAM, CPU and 4-20mA/O – 10V Analogue Outputs which can be either ABS Cased or Din Rail mounted.
Note: * For display modules operating over 2 metres from the CPU, contact Sales Department
Starting with the Base Unit select the SMW-HR you require followed by the options you need to configure the device to meet your needs.
| Base Unit | Code |
|---|---|
| Cased PCB, LCD display (comprising UAB-EX-UAHRLC-LAC-LCD) | SMW-HR/C |
| Din Rail mounted, seperate panel mounting, LCD, distance *2 meters (comprising UAB-EX-UAHRLC-D2-LCD-LCS) | SMW-HR/D |
| Cased PCB separate panel mounting, back lit LCD, (comprising UAB-EX-UAHRLC-LAC-LCD/BL) | SMW-HR/BL |
| Din Rail mounted, separate panel mounting, remote backlit LCD, distance *2 meters (comprises UAB-EX-UAHRLC-D2-LCD/BL-LCS) | SMW-HR/D/BL |
| Inputs | Code |
| High Resolution Load Cell Input | UAHRLC |
| Comms | Code |
| Communications -20mA Current Loop Comms Port | LC1 |
| RS485 Comms | LC3 |
| Relay | Code |
| Relay Module 2 SPs SPCO 5A | LR1 |
| Power Supplies | Code |
| AC Power Supply | LS1 |
| Display | Code |
| Surface Mount Display Board | LCD |
| Surface Mount Display Board with Backlight | LCD/BL |
| Surface Mount Display Board with Driver | LCDR |
| Surface Mount Display Board/ Drv/B Light | LCDR/BL |
| Hand Held Programmer for High Res Input | LP3 |
| Mounting Enclosure | Code |
| ABS IP65 Case and Mountings | LAC |
| DIN Rail Mounting Fixture | D2 |
| Extended Mounting | Code |
| Stainless Steel Panel for LCD | LCS |
| Accessories | Code |
| Load Cell Active Junction Box | JBA |
| Junction Box PCB (only) Active | JPA |
| Junction Box PCB (only) Passive | JPP |
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