Liquid and odd/big size sensor calibration
Two models of the ATC series (ATC-140 and ATC-250) fitted with a 160 mm deep well with a diameter of 63.5 mm (2.5 in) can be used both as dry-block calibrators and as liquid calibration baths with a magnetic stirrer.
A liquid bath and a dry-block diameter of 63.5 mm (2.5 in), which is twice the size of any other JOFRA dry-block, are both new in the JOFRA product range. With these options it is now possible to calibrate even more temperature sensors at the same time and to calibrate large as well as odd sizes and shapes of sensors, which were not possible to calibrate in the existing range. The compromise compared to the existing models is longer cooling, heating and stabilization times.
ATC-140 & ATC-250 can be used without an external reference sensor, but if a STS-100 reference sensor is connected directly to a B version or the JOFRA reference thermometer DTI-1000, you obtain better accuracies and thereby use the full potential of the calibrators.
Compact, accurate and reliable liquid baths for the temperature calibration of thermal sensors.
- 5, 7 and 12 litres.
- -35°C* to 250°C.
- Temperature stability as good as ±0.005°C.
- Drain tap.
- Water cooling coil.
For use in the area of temperature calibration this range of compact liquid baths offers exceptional control stability over a temperature range of -35°C* to 250°C.
The bath comes in 5, 7 or 12 litre capacity with a choice of controller options giving control stability as good as ±0.005°C.
The BFS is designed for applications requiring a constant high temperature source for calibration. The BFS has a hinged lid and a cylindrical bath 218mm in diameter and 254mm deep. Substantial fire brick insulation is incorporated within the outer container and the lid.
Standard equipment includes a separate air supply control unit which incorporates two flowmeters for monitoring the air supply and a charge of fluidising medium (aluminium oxide) and air diffuser (zirconium oxide).
The FB-08 is an attractively finished rectangular bench standing unit. The controls for temperature and fluidising air flow are mounted on a recessed panel on the front of the unit, together with on-off switches for the power supply and the dust extractor and indicators for various functions.
The inner container is well insulated and the outer case is vented so that it remains safe to touch even when the bath is operating at its maximum temperature. The inner container is filled from the top with alumina. When fluidised this medium is heated by four immersion heaters close to the container wall; the control thermocouple is close to the heaters.
SBL- 1:
With a temperature range of up to 350°C this unit covers a wide range of uses. Simple to operate and maintenance free the SBL-1 Fluidised Bath when fitted with the optional TC-8D temperature control unit, will maintain temperature to within ±1°C. The SBL-1 has a working volume of 228mm diameter and 120mm deep. The unit is fitted as standard with an energy regulator.
SBL- 2:
For temperatures up to 600°C the SBL-2 Fluidised Bath will maintain temperature to within ±1°C when used with the TC-8D. The working volume of the unit is 228mm diameter and 140mm deep. Three 1kW heaters give a heat up time from ambient to 600°C of approximately 100 minutes. All the SBL range of units have a pocket in the fluidised bath that will accept a 5mm diameter control thermocouple.
SBL-2D:
This extra depth fluidised bath is based on the SBL-2 but with a working depth of 350mm. Four 1kW heaters give a heat up time from ambient to 600°C of approximately 100 minutes.
TC - 8D:
Designed to improve the temperature stability and temperature setting obtainable with the energy regulator supplied as standard with the SB series of fluidised baths. The TC-8D is a self contained unit and is supplied complete with a chromel/alumel Type K thermocouple which fits into the sheath supplied with the SBL baths. The unit has digital set point and readout of bath temperature on an LED display and incorporates PID control.
