70
11 Supplement
WIKA Operating Instructions - Differential pressure transmitter DPT-10
Nominal range
Lower measurement
limit
Upper measuring limit
Smallest adjustable
span
40 bar (4000 kPa)
-40 bar (-4000 kPa)
+40 bar (+4000 kPa)
400 mbar (40 kPa)
Reference conditions and influencing variables (according to DIN EN 60770-1)
Reference conditions according to DIN EN 61298-1
Ʋ Temperature
+18 … +30 °C (+64 … +86 °F)
Ʋ Relative humidity
45 … 75 %
Ʋ Air pressure
860 … 1060 mbar/86 … 106 kPa (12.5 … 15.4 psig)
Determination of characteristics
Limit point adjustment according to IEC 61298-2
Characteristic curve
Linear
Calibration position of the measuring cell Vertical, i.e. upright process component
Influence of the installation position to the
zero point
≤ 4 mbar
11)
A position-dependent zero-point shift can be corrected (see also chapter "
Adjust parameter
").
Position of the span in the measuring
range
Based on the zero point
Diaphragm material
316L, Alloy C276 (2.4819), gold rhodium plated, Al-
loy 400 (2.4360)
Filling oil
Silicone oil
Material, lateral flanges
316L
A position-dependent zero-point shift can be corrected (see also chapter "
Adjust parameter
").
Deviation determined according to the limit point method according to IEC 60770
12)
Applies to
digital
interfaces (HART, Profibus PA, Foundation Fieldbus) as well as to
analogue
current output 4 … 20 mA. Specifications refer to the set span. Turn down (TD) is the ratio nominal
measuring range/set span.
All versions
The following applies to square root extracted characteristics: The accuracy data of DPT10 are
entered with factor 0.5 in the accuracy calculation of the flow.
Basic version
10 mbar, 30 mbar measuring cell
Ʋ Turn down 1 : 1
±0.09 % of the set span
Ʋ Turn down > 1 : 1
±0.09 % of the set span x TD
100 mbar measuring cell
Ʋ Turn down 1 : 1 to 4 : 1
±0.075 % of the set span
Ʋ Turn down > 4 : 1
±(0.012 x TD + 0.027) % of the set span
Measuring cells ≥ 500 mbar
Ʋ Turn down 1 : 1 to 15 : 1
±0.075 % of the set span
Ʋ Turn down > 15 : 1
±(0.0015 x TD + 0.053) % of the set span
11)
Max. value with horizontal process component. Specification applies to the basic version without chemical seal.
The value doubles with instruments with inert oil.
12)
Incl. non-linearity, hysteresis and non-repeatability.
