November 2009Maintenance, Test & Measurement, Calibration
TKT, a leading European manufacturer of isotainers for transporting fresh or deep frozen food products asked ebro to find a solution to a problem. In order to maintain the refrigerating capacity and efficiency of its isotainers, and comply with the EC directive VO 37/2005, a thermometer was required that not only would be easily visible and readable from the outside, but also offer an additional, cost-effective, cable-free solution to enable a measurement while the box was closed.
ebro recognised an opportunity to use infrared technology. The Thermobox TBI 40 was developed to fit neatly into the opening door of the isotainer, enabling internal temperature to be monitored without the need to open the container. This is an important advantage, since previously the measurement was made using a bi-metallic strip thermometer located on the interior surface of the isotainer door and every time the door was opened, undesirable warm air was allowed in.
Following indoor trials at ebro to prove the effectiveness of the TBI 40 further tests were conducted by the German Inspection Agency at TÜV SÜD using four isotainers part filled to 33% and then to 75% of capacity. Ten temperature sensors were placed between cartons/packs in the containers and the average values of these 10 units computed. In parallel, over a period of 6 hours, an infrared measurement was carried out every 10 minutes. The two sources of measurement were then plotted and the offset determined. The maximum recorded offset was 0,9°C in deep frozen goods and 1,7°C in fresh produce.
At the push of a button, the actual and average product temperatures in the isotainer can be clearly displayed. The TBI 40 automatically recognises the appropriate temperature range for fresh (-1 to +7°C) and the deep frozen food
(-18 to –33°C), and red/green LED signals provide alerts for out-of-range temperatures. The measuring range is –33 to +60°C. The accuracy is ±1° at
23°C and for the remaining range it is ±2° with a resolution of 0,1°C. The infrared distance to spot ratio (D:S) is greater than 1:1 and the emissivity rating is fixed at 0,95. The device is sealed to IP65 and switches off automatically 15 seconds after activation. The battery has a life of approximately 5 years and can be easily replaced by the user.
OEM high-pressure transducer with maximum long-term stability Instrotech
Pressure Measurement & Control
Instrotech is offering KELLER 10LHP, the flagship OEM pressure transducer in the KELLER product portfolio, which exemplifies the highest standards.
Read more...Collect data three times faster SKF South Africa
Maintenance, Test & Measurement, Calibration
SKF has extended its renowned Microlog Analyzer family of data collection devices with the addition of the Microlog Analyzer dBX. Currently SKF’s most powerful diagnostic tool, this cutting-edge device redefines diagnostic capabilities, enabling users to take measurements three times faster than its predecessor.
Read more...The criticality of maintenance in the water and wastewater segment Schneider Electric South Africa
Maintenance, Test & Measurement, Calibration
In a time of water shedding, climate change and ageing infrastructure, the importance of maintenance and support in the water and wastewater segment cannot be overstated.
Read more...Pressure sensors for hydrogen applications Instrotech
Pressure Measurement & Control
Keller manufactures isolated piezoresistive pressure sensors. The great advantage of the piezoresistive measuring principle is its high stability.
Read more...Quality test tools save costs at pulp and paper mill Comtest
Editor's Choice Maintenance, Test & Measurement, Calibration
A case study on how preventive maintenance and a few good test tools avoided unnecessary motor replacements at a pulp and paper company.
Read more...Wind turbines with smart sensors Instrotech
Motion Control & Drives
The wind’s usable kinetic energy increases with the wind speed. Wind turbines, therefore, use kinetic energy to generate torque and then rotational movement. The rotor, consisting of three rotor blades, ...
Read more...Infrared camera for condition monitoring and early fire detection Instrotech
Temperature Measurement
The Optris PI 640i thermal imager is the smallest measuring VGA infrared camera, with a body-sized volume of 45 x 56 x 90 mm, and weighing only 269 to 340 g, depending on the lens. It counts among the most compact thermal imaging cameras on the market.
Read more...Pressure monitoring for oil and water tempering machines Instrotech
Pressure Measurement & Control
Temperature plays a significant role in many manufacturing processes. In such cases, a tempering machine is used to maintain the manufacturing process at the desired temperature. Keller supplied PR-21Y piezoresistive pressure transmitters to a client specialising in developing and producing oil and water tempering machines.
Read more...The logical solution to oil and gas industry corrosion
Maintenance, Test & Measurement, Calibration
The consequences of corrosion in the oil and gas industry can be astronomical. The simple culprit is metal reacting with oxygen and moisture, degrading it back to its natural state.
printer friendly version