VEGA D98 User Manual

Operating instructions

Pressure transmitter D98

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Contents

Safety information ........................................................................ 2

1 Product description

1.1 Function and configuration .................................................. 3

2 Technical data

2.1 Data ....................................................................................... 4

2.3 Dimensions ........................................................................... 6

3 Mounting

3.1 Mounting instructions ........................................................... 7

3.2 Compensation of the atmospheric pressure ..................... 7

4 Electrical connection

4.1 Connection instructions ....................................................... 8

4.2 Terminal assignment ............................................................ 9

4.3 Connection example ............................................................ 9

Contents

5 Diagnostics............................................................................... 10

6 Instrument modification

6.1 Exchange of hygienic form seal ....................................... 11

Safety information

Please read this manual carefully, and also
take note of country-specific installation
standards (e.g. the VDE regulations in Ger­many) as well as all prevailing safety regula­tions and accident prevention rules.
For safety and warranty reasons, any internal
work on the instruments, apart from that
involved in normal installation and electrical
connection, must be carried out only by
qualified VEGA personnel.

2 Pressure transmitter D98

Product description

1 Product description

1.1 Function and configuration

D98 pressure transmitters are efficient modu­lar instruments for pressure and level meas­urement. A dry ceramic-capacitive CERTEC
measuring cell is used as the pressure sen­sor element.

®

Pressure transmitter D98 3

Technical data

2 Technical data

2.1 Data

Nominal measuring range Gauge pressure resistanLow pressure resistance

Gauge pressure

0…0.4 bar / 0…40 kPa 30 bar / 3 000 kPa -0.8 bar / -80 kPa
0…1.0 bar / 0…100 kPa 35 bar / 3 500 kPa -1.0 bar / -100 kPa
0…2.5 bar / 0…250 kPa 50 bar / 5 000 kPa -1.0 bar / -100 kPa
0…4.0 bar / 0…400 kPa 65 bar / 6 500 kPa -1.0 bar / -100 kPa
0…10.0 bar / 0…1 000 kPa 90 bar / 9 000 kPa -1.0 bar / -100 kPa
0…16.0 bar / 0…1 600 kPa 130 bar / 13 000 kP a -1.0 bar / -100 k Pa

Power supply and signal circuit

Power supply

- without indication 12 … 36 V DC
Residual ripple of the power supply no influence with U
Output signal 4 … 20 mA (factory setting)
Current limitation approx. 22 mA
Fault signal approx. 22 mA
Average delay time 20 ms
Max. permissible load see load diagram:

load in Ω

900

≤ 1 V

SS

600

300

supply voltage

12

18 24 30 36

in V

Measuring accuracy (according to DIN 16 086, DIN V 19 259-1 and IEC 770)

Measuring deviation

Reference conditions acc. to IEC 770, e.g.

- temperature 15°C … 35°C

- rel. humidity 45 % … 75 %

- air pressure 860 mbar … 1060 mbar
Determination of characteristics limit point adjustment acc. to DIN 16 086
Characteristics linear
Deviation in characteristics
Hysteresis (repeatability)

1)

Relating to the nominal range

2)

In compensated temperature range of 0°C … +80°C, reference temperature 20°C

3)

According to IEC 770, Punkt 6.3.2 related to the nominal range

4)

The use of a properly fitting cable seal in the cable connection is necessary for maintaining the housing
protection IP 66. If the seal used does not fit the cable, it should be replaced by a suitable one.

5)

FDA approved

4 Pressure transmitter D98

1)

1)

< 0.25 %
< 0.02 %