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Chapter 3. Operation
3.7.9 0x220A – The Temperature Calibration Offset
Refer to "0x2200 – To Change the Calibration Data" on page 8. Use 0x220A (Temperature
Offset) to apply a correction to the compensated source temperature.
Compensated
source
temperature
3.7.10 0x220D to 0x2218 – The Filter System
The DPS 5000 sensor can support a wide range of sample rates and filters to give a choice of
speed and accuracy. There are five filters, preset to a selection of values. Each filter is built of
two parts; a pre-scaler and a group of coefficients. It is beyond the scope of this manual to
describe the creation of these values.
The data dictionary item "Selected FIR Filter" at 0x2217 is used to choose a filter. When
changing to another filter, be aware of the 3 dB settling times below before taking new
values.
Filter Preset
Filter Type
0
No filter.
1
Averaging 10 samples.
a
2
Averaging 50 samples.
3
Butterworth low pass.
4
Butterworth low pass.
5
Butterworth low pass.
a. Factory set default filter setting.
3.7.11 0x2304 – The Tag for the Type of Data
Use object 0x2304 (Tag) to identify the type of data that the pressure transducer supplies
(maximum: 10 characters). For example: Oil-mbar.
3.8 To Change the Operation – Objects: 0x6000 – 0x6FFFF
3.8.1 0x6120 to 0x6124 – The Scale Data for Pressure and
Temperature Output
The pressure transducer uses a two-point calibration to calculate the pressure output. The
two-point calibration includes the relation between the Field Value (FV) units and the
Process Value (PV) units. To change the relation between FV and PV, use the scale-factor
10 | DPS 5000 Series Instruction Manual-English
Object 0x220A:
Figure 3-5: Temperature Calibration Offset
Cut-off Frequency
1400 Hz
44.3 Hz
8.86 Hz
1 Hz
10 Hz
17.18 Hz
Object 0x6130 02:
Temperature Value
3 dB Settling Time
0.7 ms
22 ms
100 ms
1000 ms
100 ms
60 ms
© 2018 Baker Hughes, a GE company – All rights reserved.
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