Download Operating Instructions - Differential pressure transmitter DPT

11 Supplement
Determination of characteristics
Characterstic curve
Limit point adjustment according to IEC 61298-2
Linear
Calibration position of the measuring cell Vertical, i.e. upright process component
Influence of the installation position to the ≤ 4 mbar5)6)
zero point
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
Filling oil
Silicone oil
Diaphragm material
316L, Alloy C276, gold rhodium plated, Monel
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 607707)
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.
Deviation - 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.
Deviation - Basic version
10 mbar, 30 mbar measuring cell
ƲƲ Turn down 1 : 1
ƲƲ Turn down > 1 : 1
100 mbar measuring cell
ƲƲ Turn down 1 : 1 to 4 : 1
ƲƲ Turn down > 4 : 1
Measuring cells ≥ 500 mbar
ƲƲ Turn down 1 : 1 to 15 : 1
ƲƲ Turn down > 15 : 1
Deviation - Chemical seal versions
100 mbar measuring cell
ƲƲ Turn down 1 : 1 to 4 : 1
ƲƲ Turn down > 4 : 1
Measuring cells ≥ 500 mbar
ƲƲ Turn down 1 : 1 to 15 : 1
ƲƲ Turn down > 15 : 1
±0.15 % of the set span
±0.15 % of the set span x TD
±0.075 % of the set span
±(0.012 x TD + 0.027) % of the set span
±0.075 % of the set span
±(0.0015 x TD + 0.053) % of the set span
±0.075 % of the set span + influence of the chemical
seal
±(0.012 x TD + 0.027) % of the set span + influence of
the chemical seal
±0.075 % of the set span + influence of the chemical
seal
±(0.0015 % x TD + 0.053 %) of the set span + influence
of the chemical seal
WIKA Operating Instructions - Differential pressure transmitter DPT-10
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