Friday 6 November 2009

Temp calibration

25 Years and another breakthrough in temperature calibration technology

Featuring a new, unique ‘Dynamic Load Compensation’ (DLC) capability to ensure perfect temperature uniformity in the test sensor insert region, the new lightweight JOFRA Reference Temperature Calibrator (RTC) Series of dry block temperature calibrators from AMETEK Calibration Instruments is the best performing dry-block calibrator on the market, when being calibrated and tested according to the globally accepted EURAMET/cg-13/v.01 guideline.

With outstanding specifications including accuracy to ±0.04°C using the external reference sensor (4-wire True-Ohm-Measurement technology is used) and stability of 0.005 ̊C, the new RTC-156 also has a host of new features, including shorter heating and cooling times and an extended temperature calibration range.

Portable temperature calibrators were first made available to industry in 1984 when JOFRA Instruments announced the world’s first temperature dry-block calibrator. Twenty-five years later, they continue to lead the way with the new DLC system (patent pending).

The DLC system features a special sensor linked into the well-established JOFRA active dual-zone heating technology for improving temperature homogeneity. The DLC sensor provides feedback to the active dual-zone system to allow the homogeneity to be controlled in the insert in which the sensors-under-test are placed during calibration, in addition to the normal temperature control and stabilization in the sensor test well. This enhanced level of control makes the homogeneity completely independent of sensor load, even when calibrating big sensors or many sensors at a time.

Heating and cooling speed on the Reference Temperature Calibrator Series has been increased by up to 20% compared to all other calibrators, giving savings in both production down-time and general calibration costs. The RTC-156 can perform calibration from -30°C up to 155°C (-22 to 311°F), making it possible to perform calibration jobs over a very wide temperature range of 185°C (333°F) with only one calibrator. A new 5.7” full color VGA display provides continuous display of the main temperatures such as SET, READ, TRUE and SUT (Sensor under test) at all stages of the programming or calibration procedure.

The STS-200 intelligent reference sensors and the new DLC sensor for the RTC-156 each contain their individual calibration data (coefficients) to provide a failsafe plug’n’play calibration system. This eliminates the need for time-consuming coefficient downloading with the associated risk of errors and allows immediate operation even if the reference sensor is replaced. Both the STS-200 and DLC sensors have been specially angled at 90˚ for easy calibration of threaded sensors and sensors with connection heads.

In keeping with the overall weight-saving design philosophy of the Reference Temperature Calibrator Series, special lightweight metric and imperial size multi-hole insert kits have been developed to cover calibration of virtually any size of sensor. The metric insert kit consists of just four inserts covering all diameters from 3 to 13mm. The imperial insert kit consists of three inserts covering six different sizes from 1⁄8” to 1⁄2”. All inserts have holes for both STS reference sensors and DLC sensors.

1 comment:

  1. Temperature Calibrator
    It is no doubt that temperature calibrator is important in our lives. Without this, we might not be able to know whether those devices that run in a temp-controlled machine is functioning properly or not.