Binder MK 115, Operating Manual

Page: 121 / 159

MK / MKT (E5) 03/2019 page 121/158
24. Technical description
24.1 Factory calibration and adjustment
The chambers were calibrated and adjusted in the factory. Calibration and adjustment were performed
using standardized test instructions, according to the QM DIN EN ISO 9001 system applied by BINDER
(certified since December 1996 by TÜV CERT). All test equipment used is subject to the administration of
measurement and test equipment that is also constituent part of the BINDER QM DIN EN ISO 9001 sys-
tems. They are controlled and calibrated to a DKD standard at regular intervals.
24.2 Over-current protection
The chambers are equipped with an internal protection not accessible from outside. If these fuses have
responded, please contact an electronic engineer or BINDER Service.
24.3 Definition of usable volume
The usable volume illustrated below is calculated as follows:
c
c
b
a
C
B
A
b
a
A, B, C = internal dimensions (W, H, D)
a, b, c = wall separation
a = 0.1*A
b = 0.1*B
c = 0.1*C
V
USE
= (A - 2 * a) * (B - 2 * b) * (C - 2 * c)
Figure 19: Determination of the useable volume
The technical data refers to the so defined usable volume.
Do NOT place samples outside this usable volume.
Do NOT load this volume by more than half to enable sufficient airflow inside the chamber.
Do NOT divide the usable volume into separate parts with large area samples.
Do NOT place samples too close to each other in order to permit circulation between them and
thus obtain a homogenous distribution of temperature.