Gauge Pressure Level Transmitter


A Tek-Hydro 4500A-G series gauge 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. 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 8700PSI.

  • 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
  • Explosion proof approval and intrinsic safety approval
ServiceLiquid level, density
Measuring Range0.217 PSI to 8700 PSI
Output4 to 20 mA with HART
Stability±0.1% URL for 12 Months
Response TimeUpdate time: 0.25 sec
 Turn on time: 5 sec
DisplayLCD display
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
HART Loop Resistance250 to 550 ohm
Process Wetted Material316 SST
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)

gas industry

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