Dry high-temperature furnace

JOFRA is one of the manufacturers and researchers of temperature, pressure, process signal calibrators, and temperature sensors in both technical and commercial fields. Ametek Calibration Instrument Department has factories in the United States and Denmark, specializing in the production and sales of series JOFRA pressure calibrators, dry type temperature calibrators, electrical signal calibrators, etc., which are used in industrial sites and laboratories. It is a professional manufacturer of calibration instruments in the world and has developed the world's * dry type temperature calibrators.

Ametek calibration instruments entered the Chinese market in the early 1990s and after years of development, they have sold thousands of devices domestically. In many industries such as power plants, power supply systems, petrochemicals, metallurgy, metrology, aerospace, ships, food, pharmaceuticals, etc., they have thousands of users and have become a major player in the Chinese market.

Ametek has been continuously developing new technologies to improve the performance, accuracy, usability, and functionality of JOFRA dry furnaces, which has kept us in the field of dry temperature calibration.
Now, we are honored to release a brand new RTC type dry furnace (standard dry furnace) - a dry furnace that is more powerful than any other product, a dry furnace that has been used so far.

As a dry furnace, the RTC type provides many functions, such as:
DLC dynamic load compensation system (under application), which can ensure the temperature field performance of the casing
The reference probe is equipped with an intelligent chip that can achieve plug and play functionality
Can communicate with computers through USB interface
Color VGA LCD display screen for easy reading and monitoring of temperature field status
Intuitive, fast, and user-friendly interface
Lightweight and easy to carry
New multifunctional portable aluminum box
The new porous sleeve kit is compatible with almost all sizes of sensors
Featuring a novel appearance and the JOFRA brand*

AMETEKDry body furnaceThe JOFRA RTC-700 high-temperature furnace has three models: Type A, Type B, and Type C
RTC-700A standard dry furnace
RTC700B standard dry furnace with reference probe, DLC probe and signal testing interface
RTC-700C standard dry furnace with reference probe and DLC probe

*Temperature performance
The RTC series RTC700B dry furnace can perform precise calibration on various models and types of temperature probes This is thanks to its innovative dual zone heating technology All JOFRA RTC series dry body furnaces have dual zone heating function Each heating zone can be individually controlled for precise temperature measurement The temperature at the bottom of the heating block is very close to the indicators of laboratory liquid tanks The heating area below ensures appropriate heat consumption of the entire heating block, while the heating area above compensates for the heat loss of the upper part of the heating element and the measured sensor This design does not require insulation of the tested probe and can calibrate liquid filled or other mechanical probes.

Intelligent reference probe
The JOFRA STS-200 intelligent reference probe is equipped with temperature correction parameters, and similarly, the DLC probe is the same.
Firstly, this means that there is no need to download temperature compensation parameters through a computer (which carries risks). Secondly, users can freely replace the smart probe, as AMETEK has already ruled out measurement errors caused by replacing different probes. This is a true plug and play calibration system.

DLC - Dynamic Load Compensation Technology
In order to achieve better temperature field performance in conjunction with dual zone heating technology, we have developed DLC (Dynamic Load Compensation) technology, which is currently under application.
Under this new technology, the accuracy of the calibration system will not be affected by sensor loads, especially when calibrating multiple or large sensors. To achieve this function, we have developed a new DLC probe to dynamically compensate for the impact of loads. The dynamic dual zone heating technology equipped in the RTC dry furnace can maintain the temperature at the top and bottom of the casing, minimizing the temperature difference between the two. And DLC technology not only controls the temperature field * of the heating well, but also controls the temperature field * inside the casing. The DLC probe monitors the subtle changes in the temperature field inside the casing and feeds back the data to the dual zone heating system, which dynamically compensates for the temperature field. In this way, DLC technology can ensure that the temperature field performance is not affected by the amount of load

USB communication
Another new feature of RTC type dry furnace is USB communication function. Through the USB interface, the dry stove can be easily connected to a PC and firmware upgrades can also be performed through the PC The new USB interface enables all laptops to easily connect to the dry body stove, eliminating the need for USB to RS232 adapter cables. To meet more future applications, RTC is also equipped with a LAN interface, SD card slot, and USB hub, which can be downloaded through the network to upgrade the built-in firmware.

*Reference probe
The STS-200 reference probe and DLC probe are specially designed. AMETEK can provide reference probes and DLC probes with a 90 ° bend angle, which have an upper end only slightly higher than the top of the casing when inserted. This special design makes it very convenient to calibrate temperature sensors with connecting covers on the top

The size of the casing remains unchanged
The casing size of RTC-700 is the same as previous products (30x150mm). If users upgrade from JOFRA's old products (such as ATC) to RTC, they can continue to use the original casing.

Porous casing kit
Two types of porous sleeve kits can meet the size requirements of the vast majority of temperature probes. *The kit is a metric kit that includes 4 sleeves with hole sizes ranging from 3mm to 13mm. The other kit is an imperial kit that includes 3 sleeves with hole sizes ranging from 1/8 'to 1/2'. All sleeves are reserved with reference probe holes and DLC probe holes. Once these sleeves are equipped in the portable case, users can calibrate temperature probes of all commonly used sizes.

wide temperature range
RTC-700 can provide a wide temperature range: from -45 ℃ to 155 ℃.
A dry furnace can cover a temperature field span of 185 ℃.

Quick calibration
Time is money! Compared to all other dry body furnaces, RTC dry body furnace has significant advantages in terms of temperature rise and fall speed. The heating and cooling speed has increased by 20% compared to JOFRA's old products, resulting in a significant reduction in equipment downtime and calibration costs.

Ultra high precision (only for Type B and Type C)
RTC can use both built-in temperature probes and external reference probes. Not only can it be used directly on site, but it can also ensure high calibration accuracy when used in the laboratory. The special 90 ° bending angle reference probe can be used with a protective cover on the upper part of the tested probe or in larger sizes. Users can choose to read the temperature values of the built-in reference probe or external reference probe on the screen. The measured values of the two do not affect each other.

True value stability (only for type B and C)
Only Type B and Type C have this function, which can use an external reference probe to control the temperature to reach the set point temperature When the temperature in the heating element is strictly required to be equal to the set point temperature, an external reference probe can be used for temperature control This feature is ideal for calibrating gas correctors or other storage transformations

The reading of the tested meter (only type B)
The B-type is equipped with a built-in signal testing port, which can directly test the feedback signals of thermal resistance RTC, thermocouple TC, temperature transmitter, current mA, voltage V, and temperature switch. The RTC dry body furnace can customize the calibration process through the buttons on the panel. Once the calibration process is defined, the dry furnace can be automatically calibrated according to the pre-set settings. All calibration data will be automatically recorded and stored, and can also be read directly through the screen.

Temperature switch test (only for type B)
The B-type dry furnace can perform temperature switch testing, automatically record on/off points and dead zones, and can retain 20 test data.

Automatic stepping
Zui can set up 20 automatic steps, including the holding time for each step After completing an automatic stepping process, users can easily read the readings of the tested probe. It can store up to 20 sets of automatic stepping test data Users can set the target temperature (resolution 0.01) through the temperature setting function

Enhanced stability
When RTCDry body furnaceAfter reaching the preset temperature and maintaining stability, a stability indicator symbol will appear on the LCD screen. Users can easily and quickly change stable conditions: external reference probe and tested probe. The stable condition setting ensures that users can calibrate correctly. A countdown time will be displayed next to the temperature reading to indicate the time required to reach stability.

Instrument settings
RTC allows users to store up to 10 complete instrument settings. Users can store various
Information such as temperature units, stability conditions, use of external reference probes, resolution, tested probe, temperature conversion, LCD screen contrast, etc. These settings can be called at any time.

Zui high/Zui low temperature setting
Users can select settings from the settings menuDry body furnaceThe maximum/minimum temperature limit function can protect the calibrated probe from damage due to exceeding the temperature limit, and this function helps reduce the drift of the probe caused by high/low temperature. Users can use a password to lock.

AMETEK Dry Body Furnace High Temperature Furnace JOFRA RTC-700 Technical Parameters
Accuracy (only for Type B and Type C) with reference probe
RTC-700B&C......................±0.11°C / ±0.2°F
12-month indicators.
This indicator is the accuracy of adding STS200 external reference probe

Precision built-in probe
RTC-700A, B & C.................±0.29°C / ±0.52°F

stability
RTC-700（33~125℃） …. ....................... ±0.008°C / ±0.027°F
Measure after the dry furnace stabilizes for 15 minutes, with a duration of 30 minutes

Radial * (between different openings)
RTC-700（33~100℃）. .............................................. 0.1°C

Resolution (user selectable)
All temperatures . .................1°or0.1°or 0.01°or0.001

heating time
33 to 700 ° C/97 to 1292 ° F.... 45 minutes

Cooling time
700 to 100 ° C/1292 to 212 ° F for 43 minutes
100 to 50 ° C/212 to 122 ° F...... 17 minutes
50 to 33 ° C/122 to 91 ° F for 20 minutes

Stable time (approximately)
RTC-700 10 minutes

insertion depth
RTC-700..................................200 mm / 7.9 in

AMETEK Dry Body Furnace High Temperature Furnace JOFRA RTC-700 Appearance Dimensions
Weight and Size (LxH)
RTC-700 . ....................... 11.3 kg
RTC-700 ……………………………… 362 x 171 x 421 mm

Shipping weight and size (excluding portable case)
RTC-700 . ............................. 22.3 kg
Size ..................................442 x 251 x 481 mm

Shipping weight and size (including portable case)
RTC-700 . ............................. 28 kg
Size ................................. 550 x 430 x 660 mm

Shipping weight and size (portable case only)
Weight. ................................8.0kg/13.2lb
Size. ..................................650x380x500mm/25.5x14.9x19.7in

casing size
RTC-700 outer diameter ............................29.7mm/1.17in

RTC-700 inner diameter (hole) .......................25.6mm/1.01in

RTC-700 inner diameter (single hole) ......................22.0mm/0.87in

RTC-700 length ........................................210 mm / 5.91 in

Weight of unperforated casing (approximately.)
RTC-700 . ..................................... 1060 g / 37.2 oz

AMETEK dry body furnace high temperature furnace JOFRA RTC-700 standard configuration A, B, and C types
RTC dry furnace (model selected according to user requirements)
Power cord (specifications to be selected according to user requirements)
Traceable Calibration Certificate - Temperature
Sleeve tool
JofraCal software USB cable
Rubber insulation cover
User Manual

The B-type calibrator includes the following accessories:
Test line (2 x red, 2 x black)
Traceable calibration certificate - STS probe and DLC probe
Traceable Calibration Certificate - Input Signal Port

The C-type calibrator includes the following accessories:
Calibration certificate - STS probe and DLC probe