Differential Pressure Level Transmitter


A Tek-Hydro 4500A-D series differential pressure level transmitter is a commonly used instrument which measures the level of a liquid in a tank. It is a simple device used in a wide range of liquids, including corrosive, non-corrosive and abrasive liquids and slurries in tanks of any size. It can handle broad temperature and pressure ranges under different process conditions. Tek-Hydro 4500A-D series has flexible sensor input which measures hydrostatic pressure head and converts into a liquid level. It is used to measures not only the liquid level but also other parameters such as the flow rate and density. This transmitter has a maximum pressure up to 1000PSI.

  • Operator can calibrate device using zero/span button, no handheld calibrator required
  • Digital communication HART® protocol
  • Fail-safe mode process function for detecting any abnormal condition occurring
  • Superior performance provides High accuracy up to ±0.075%
  • Automatic ambient temperature compensation improves performance of device
  • Various Output: 4-20 mA, digital signals
  • The mounting bracket can be rotated up to 360º and LCD display up to 270º
  • EEPROM write protection
  • Self-diagnostic function
  • Explosion proof approval and intrinsic safety approval
ServiceLiquid level, density
Measuring Range1.5 in H2O to 1000PSI
Output4 to 20 mA with HART
Stability±0.1% URL for 12 Months
Response TimeUpdate time: 0.25 sec
 Turn on time: 5 sec
Temperature LimitProcess temperature: -40 ºF to 248 ºF
 Operating temperature: -40 ºF to 185 ºF
Thermal Effect±[0.025%URL+0.125% Span]/28 ℃
Power Supply12 to 45 VDC
Process Wetted Material316 SST
Process Connection1/4″ – 18” NPTF
 ½”-14″ FNPT Connection Adapter (316 SST) for Tek-Hydro 4500A-D series w/ Single Diaphragm Seal
Electrical Connection/Housing½” – 14″ NPTF Conduit/Epoxy Coated-Aluminum
 G1/2 Conduit/Epoxy Coated-Aluminum
Agency ApprovalKOSHA Flameproof Approval: Ex d IIC T6
 KTL Intrinsic Safety Approval: Ex ia IIC
 ATEX (KEMA) Flameproof: Ex d IIC T6 or T5
 ATEX (DEKRA) Intrinsic Safety
 FM/FMC Explosion proof (for USA & Canada) Class I/II/III, Division 1/2, Group A-D/E-G
Enclosure RatingIP67(NEMA 4X)

differential pressure level transmitter

gas industry

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