Features
Large Furnace Cavity
The inner diameter of the furnace cavity is φ50mm, which is convenient for verification and calibration of type B thermocouples with protection tubes. It is suitable for the situation that the used Type B thermocouple wire cannot be removed from the protection tube. For the PR332W and PR332L tungsten-rhenium thermocouple calibration furnaces, the large furnace cavity is conducive to the sealing of the argon protection device.
Wider Working Temperature Range, Better Temperature Field Uniformity
The introduction of multi-zone temperature control technology, on the one hand, it effectively improves the degree of freedom in adjusting the temperature field index of the high-temperature furnace, and allows the temperature distribution in the furnace to be flexibly adjusted through software (parameters) to meet different use environments (such as the length of the under calibrated thermocouple、 changes in loading). On the other hand, it is ensured that the high temperature furnace can meet the requirements such as temperature gradient of the related specification over its entire operating temperature range. And according to the shape and quantity of the specific under calibrated thermocouple, by adjusting the parameters of the temperature zone, eliminate the influence of the thermal load on the temperature field of the calibration furnace, achieve the ideal calibration performance under the load state.
High Precision Smart Thermostat
It adopts high-precision multi-temperature zone constant temperature regulation circuit and algorithm, with a temperature measurement resolution of 0.01℃, fast heating, monotonic and stable temperature, and good constant temperature effect. The actual controllable (stable) minimum temperature of the high-temperature furnace by this constant temperature regulator can reach 300℃.
Strong Power Adaptability
There is no need to configure an additional three-phase AC regulated power supply for the high temperature furnace.
Complete Protection Measures
· Slow start: prevents a sudden increase in heating power and effectively suppresses current shock during cold start of the equipment.
· Main circuit protection: each phase of the three-phase load implements overpower protection and overcurrent protection.
· Temperature protection: including over-temperature protection, broken thermocouple protection, etc.
Built-in Operation Recorder
It has functions such as cumulative running time in different temperature zones.
Compatibility
PR332 series products can be used independently or as supporting equipment for our company’s ZRJ series intelligent thermal instrument calibration system, realizing functions such as remote control start/stop, real-time recording, parameter query setting, etc.
Main Interface
Curve Interface
Temperature Difference Test Results