The new SMW surface mount intelligent strain gauge amplifier and weighing controller from Celsum Technologies is specifically designed for weighing operations using strain-gauge based load cell sensors. Its flexibility of design allows for the connection of most load cells, pressure or strain gauges over a wide range of sensitivities. With an 8 digit 12.7mm LCD display, and housed in an ABS case, the SMW is sealed to IP65 standard to meet most environmental conditions, or as a DIN Rail mounting module with a separate stainless steel panel mounting display and keypad. The strain bridge circuit has an excitation voltage of 10V with a capacity of 160mA, sufficient to handle up to six 350ohm load cells in parallel. The working units may be set as engineering units, and communication with intelligent hosts is possible via the ASCII, Modbus and Mantrabus protocol options. The basic unit offers an auto calibration of the highest and lowest weights required, an auto tare setting and hold facility. A password facility gives protection to setup parameters. DC analogue outputs of 4-20mA and 0-10V are standard with full scaling over any desired range and the ability to invert these outputs if required.
