SIKA, Dr. Siebert & Kühn GmbH & Co. KG, Struthweg 7-9, 34260 Kaufungen, Germany
37/40
Tel: +49-5605-803-0, Fax: +49-5605-803-54, email: info@SIKA.net, web: www.SIKA.net
F.
T
ECHNICAL SPECIFICATIONS
In the context of metrological quality monitoring, the user may have to carry out a periodic performance
verification.
The verification must take the standard metrological precautions into consideration. The following
instructions are to be applied.
The operations are carried out under reference conditions, namely:
•
Room temperature: 23°C
±
5°C.
•
Relative humidity: 45% to 75%.
The standards that constitute the measuring chain must be such that the errors at the check points are
known and are less than or equal to
±
0.008%.
It this verification reveals one or more characteristics of the instrument to be outside the tolerances
specified in the technical specifications chapter, you can:
•
Either carry out the adjustment procedure given in the maintenance document, which requires an
instrument whose performance is at least as good at that used for the preceding verification.
•
Or return the instrument to the address indicated below for verification and calibration.
specifications
The precision expressions mentioned herein apply from + 18°C to + 28°C, unless otherwise specified, and are
expressed in ± (n % L + C) where L = Reading and C = Constant expressed in practical units, for a confidence
interval of 95%.
They apply to a device positioned in the reference conditions defined after fifteen minutes of pre-heating.
Following a significant thermal shock, it is advisable to allow the device to stabilise its temperature to use the
internal reference junction (CSF) with the utmost precision.
The precision includes the precision of the reference calibrations, the non-linearity, hysteresis, repetitiveness and
long-term stability over the time period mentioned.
F.1
Measurement Function
Rated maximum voltage in common mode: 60 VDC or VAC.
F.1.1
Constant voltage (measurement)
The voltage measurement is made by configuring the device as follows:
Thermocouple: indifferent.
Unit: mV.
CSF: OFF.
Range
Scope of measurement
Resolution
Precision
100 mV
-10 mV up to 100mV
1 µV
0.020 % of rdg. + 3 µV
•
Temperature coefficient < 15 ppm of rdg. /°C from 0°C to 18°C and from 28°C to 50 °C.
•
R
in
= 1 M
Ω