March, 2013
www.us-
tech.com
Calex: Versatile Load Cell Summing Transmitter
Concord, CA — Calex has introduced the new Model 4800 Summing Transmitter, described as a cost- effective, highly versatile solution for multiple load cell systems. The new
way signal isolation. The input is iso- lated from the output and both are isolated from the supply voltage, eliminating unwanted ground loop problems. The output options avail- able are 0 to 20mA or 0 to 10V and 4 to 20mA or 2 to 10V. Overall accuracy over the normal room temperature range is excellent at <±0.1 percent of full scale. The high gain, low drift and low tem- perature coefficient of the amplifi- er allows full-scale live load sig- nals as low as 5mV to be amplified to 20mA or 10V with an overall accuracy of ±0.1 percent. Designed with large and very
Load cell summing transmitter.
product can accept both AC and DC power inputs, power up to four load cells, while providing three way iso- lation, and four output options. All input/output options are included on the 4800 as provided by the factory. The 4800 has the capability to
be powered from 115 or 230VAC, or 11 to 30VDC. It has a built-in excita- tion supply capable of delivering up to 120mA at 10V, more than enough current to drive four 350W load cells. The 4800 provides complete three-
stable tare offset requirements in mind, the 4800 can tare off up to 80 percent of the output of a 3mV/V load cell (at 10V excitation). The dimensions of the stand alone unit are 9.0 x 7.25 x 2.2-in.
(229 x 184 x 56). All connections are made with easily accessible screw terminals. All potentiometers are located for ease of adjustment as well. The Model 4800 can be ordered with the choice of two NEMA enclo-
sures or standalone. Contact: Calex Mfg. Co., Inc.,
2401 Stanwell Dr., Concord, CA 94520-4841 % 800-542-3355 or 925-687-4411 fax: 925-687-3333 E-mail:
sales@calex.com Web:
www.calex.com
EAO: HMI Systems and Components
Milford, CT — EAO Corporation sup- plies custom-built HMI Systems and a full range of HMI Components for machinery and electronics produc- tion equipment.
utilize a mix of technologies that might include a touch screen or dis- play, membrane keypad, discrete pushbuttons and emergency-stop functions built into a singular protec- tive housing and connect- ed through an appropriate serial bus to simplify con- nectivity and diagnostics. EAO manufactures
Designs and components for optimum Human Machine Interface (HMI).
Typical HMI Systems developed
by EAO include integrated control pan- els for system startup and shutdown with emergency-stop functions; hand- held remote controls and tethered pen- dants with displays and short-travel keyboards; and touchscreen interfaces with CANbus connectivity. Each one of these innovative,
reliable and intuitive control panels is custom-built for a particular machine by the company’s team of in- house experts. Typically they will
one of the world’s largest ranges of high-perform- ance systems and compo- nents for machinery con- trol panels including: con- figurable HMI panel that combines design flexibility and “mixed technologies” into a single drop-in style unit offered in several sizes; series 04 emergency stop protective shrouds to satisfy the SEMI S2- 93/12.4c standard; series 84 illuminated E-stops with foolproof operation; series 51 flush mount space-saving push but tons for compact control panels. All components are
available in a wide choice of actuators, materials,
lenses and mounting styles built to the highest quality and design stan- dards. Available worldwide, they are manufactured to international stan- dards including CE, RoHS, CB- EN/IEC 60947-5-1, UL, NFF 16-102,
CSA, CCC, GOST, German Lloyd. Contact: EAO Switch Corp., 98
Washington St., Milford, CT 06460 % 203-877-4577 fax: 203-877-3694
E-mail:
sales.eus@
eao.com Web:
www.eao.com or
www.eao-hmi.com
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