MKF / MKFT (E5) 04/2022 page 20/176
2. Chamber description
The alternating climate chamber MKF / MKFT is a specially developed precision cooling/warming cabinet
for the domain of industrial material testing and environment simulation, with an unrivalled capacity, which
far exceeds the capabilities of normal test cabinets, providing the ideal facilities for solving all the problems
which occur during material as well as ageing and stress tests.
The chambers are equipped with a multifunctional microprocessor display controller with 2-channel tech-
nology for temperature and humidity plus a digital display accurate to one-tenth of a degree resp. 0.1% r.H.
With its comprehensive program control functions, the display program controller MB2 permits the high
precision performance of temperature and humidity cycles with rapid heating up and cooling down phases.
With its microprocessor-controlled humidifying and dehumidifying system the chamber is a high-precision
climatic test chamber. It covers the regular test specifications for temperature and climates corresponding
to DIN und IEC standards. Furthermore, it permits simulating exactly and over long periods constant con-
ditions for other applications such as sample conditioning for material testing of paper, textiles, plastics,
building materials, etc.
The patented APT.line™ preheating chamber and air conduction technology guarantees excellent spatial
temperature and humidity values for the total working area. The chamber provides a powerful refrigerating
system with rapid cooling-down speeds. In addition, the chamber provides almost unlimited possibilities for
adaptation to individual customer requirements based upon extensive programming options.
Humidity control: A resistance humidifying system humidifies the air. For this purpose, use deionized
(demineralized) water. The option BINDER Pure Aqua Service permits using the chamber with any degree
of water hardness.
Material: The high-quality housing insulation guarantees both a low noise mode of operation and a con-
sistently low housing temperature. The inner chamber, the pre-heating chamber and the interior side of the
doors are all made of stainless steel V2A (German material no. 1.4301, US equivalent AISI 304). When
operating the chamber at temperatures above 150 °C / 302°F, the impact of the oxygen in the air may
cause discoloration of the metallic surfaces (yellowish-brown or blue) by natural oxidation processes. These
colorations are harmless and will in no way impair the function or quality of the chamber. The housing is
RAL 7035 powder-coated. All corners and edges are completely coated.
Controller: The efficient program controller is equipped with a multitude of operating functions, in addition
to recorder and alarm functions. Programming of test cycles is easily accomplished via the modern
touchscreen controller MB2 and is also possible directly with a computer via Intranet in connection with the
APT-COM™ 4 Multi Management Software (option, chap. 21.1). The chamber comes equipped with an
Ethernet serial interface for computer communication. In addition, the BINDER APT-COM™ 4 Multi Man-
agement Software (option) permits networking up to 100 chambers and connecting them to a PC for con-
trolling and programming, as well as recording and representing temperature and humidity data. For further
options, see chap. 25.6.
The chambers are equipped with
four castors. Both front castors can be easily locked via the attached
brakes.
Temperature ranges:
• MKF without humidity: -40 °C / 104 °F up to +180 ºC / 356 °F,
• MKFT without humidity: -70 °C / -94 °F up to +180 ºC / 356 °F,
• MKF / MKFT in climatic operation: + 10 °C / 50 °F up to +95 °C / 203 °F
• Chambers with optional compressed air dryer in climatic operation: 0 °C / 32 °F up to +95 °C / 203 °F
Humidity ranges:
• 10% up to 98% r.h.
• Chambers with optional compressed air dryer: 5 % r.h. up to 98 % r.h.
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