RTD to Frequency Signal Conditioner suits wind turbines.
June 17, 2009 -
Operating on common 24 V, 7 mA PLC high speed counter input, Model 8540 is designed for use with platinum 100 W RTD over temperature range of -100 to 400°C. Model 8540 is calibrated to the 0.00385 coefficient and output frequency is 100 Hz at -100°C to 5,100 Hz at +400°C, providing 12 bit resolution. Housed in 3.78 x 1.06 x 1.65 in. plastic case with built in DIN rail mounting foot, UL 508 and UL 1604 compliant unit is suited for remote temperature monitoring applications.
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Original Press release
Calex Mfg. Co., Inc.
2401 Stanwell Dr.
Concord, CA, 94520
USA
RTD to Frequency Signal Conditioner Used in Wind Turbine Application
Calex Mfg. Co., Inc. of Concord, California announces the availability of the Calex Model 8540. The 8540 was selected for use in controlling and monitoring equipment temperatures in the nacelle of wind turbines, where long term operation and reliability is a must. The Model 8540 provides a low cost solution ideal for applications where single point, isolated RTD signal conditioning is required. The 8540 is designed to operate into a common 24 volt, 7mA PLC high speed counter input. It is well suited for applications such as remote temperature monitoring.
The 8540 is designed for use with a platinum 100 ohm RTD over a temperature range of -100°C to 400°C. The 8540 is calibrated to the 0.00385 coefficient and is compensated for the non-linear characteristic of the RTD. The output frequency is 100Hz at -100°C to 5100Hz at +400°C providing 12 bit resolution. The output optocoupler provides DC isolation from the input and the 24 VDC power. The 8540 is housed in a plastic case with a built in DIN Rail mounting foot. The case dimensions are 3.78"L x 1.06"W x 1.65"H. All connections are made to easily accessible screw terminals. The 8540 Series is backed by Calex's five year warranty and is UL 508 and UL 1604 compliant.
Pricing for the 8540 Series is $100.10/ea (100). Units are available from stock to 6 weeks. For more information, contact Calex Mfg. Co., Inc. via phone 925-687-4411 / 800-542-3355 or fax 925-687-3333. For a complete data sheet on the Model 8540 Series go to http://www.calex.com/pdf/8540.pdf or email instrumentation@calex.com. The Calex corporate address is 2401 Stanwell Drive, Concord, California 94520 USA. Calex has manufacturing facilities in both Concord California and Tijuana Mexico.
Contact: Michael McNally
(mmcnally@calex.com)
Phone: (605) 332-5283
CALEX Mfg. Co., Inc.
2401 Stanwell Drive
Concord, CA 94520-4841
800-542-3355
(925) 687-4411
FAX: (925) 687-3333
Email: sales@calex.com
www.calex.com
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