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Differential pressure transmitter
Type: PAD

The Kobold differential pressure transmitter type PAD is a high performance microprocessor based transmitter with flexible pressure calibration and output, automatic compensation of ambient temperature and process variables, configuration of various parameters and communication using HART® protocol. The applications are very versatile, such as for pressure measurement, flow measurement or level measurement.

All data from the sensor is read into an EEPROM, modified and stored. The Kobold differential pressure transmitter is optionally available as a flow meter. This flow meter type PAD-F has a totalising function in the PAD transmitter. It is therefore possible to record the flow rate and the totalised flow.

The PAD-F measures flow using differential pressure without compensation for temperature and static pressure. Except for the difference in the terminal block, the shape of the PAD-F is the same as the standard unit. The terminal block of the PAD-F has only two additional terminals for reading the frequency output.

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Details

Applications

The Kobold differential pressure transmitter type PAD is a high performance microprocessor based transmitter with flexible pressure calibration and output, automatic compensation of ambient temperature and process variables, configuration of various parameters and communication via HART ® protocol. The applications are very versatile, such as

  • Pressure measurement
  • Flow measurement
  • Level measurement
Special features
  • High accuracy: ±0.075 % of the set span
  • Span ratio: 100:1
  • Automatic compensation of the ambient temperature
  • Configuration via handheld terminal or PC.
  • Measuring diaphragm in 1.4404, Monel, Tantalum or HC
  • Explosion proof housing.
  • Attachment of various diaphragm seals (directly or via capillary lines)
Technical data
  • Measuring span: 0.75…15 mbar to 4.137…413.70 bar
  • Accuracy: 0.075 % of the set measuring span
  • Process temperature: -40 °C…+120 °C
  • Ambient temperature: -40 °C…+80 °C
  • Storage temperature: -40 °C…+85 °C

Wetted parts:

  • Membrane: 1.4404 (316L), MoneI, Tantal, HAST-C
  • Liquid filling: silicone oil or inert filling liquid
  • Electronics housing: die-cast aluminium, flameproof Ex “d” enclosure
  • Protection class: IP67
  • Lacquer finish: epoxy-polyester or polyurethane
  • Mounting bracket: for 2″ pipe, 1.4301 (304) or painted steel
  • Process connection: 1/4-18 NPT i, oval adapter 1/2-14 NPT (optional)
  • Display: 5-digit LCD
  • Power supply: 11.9…45 VDC, 17.4…45 VDC with HART® communication
  • Max. Load: 250 Ohm at 17.4 VDC, 550 Ohm at 24 VDC
  • Cable entry: ½”-14 NPT / G ½
  • Output: 2-wire 4-20 mA HART®, linear / square root
  • Frequency output: pulse width 10, 50 or 100 ms (selectable)
Certificates and Approvals

ATEX Approval:

Ex II 2G Ex d IIC T6 …T5 (Option)

Ex II 1G oder 2G Ex ia IIC T5 oder T4 Ga oder Gb (Option)

Communication

HART®-protocol