The diaphragm seal of PT124B-3504 differential pressure level transmitter is single flange mounting type , it is used to prevent medium from entering directly into the pressure-sensing assembly of the pressure transmitter. It is connected to the transmitter using capillary filled with fill fluid, such as silicon oil. The model PT124B-3504 can be used to measure liquid, gas, or stem flow, as well as liquid level, density and pressure. It outputs a 4 to 20mA DC HART signal corresponding to the measured pressure differential. The model PT124B-3504 also features remote setup and monitoring though communication with the model RST375 TERMINAL or RSM100 Modem. PT124B-3504 differential pressure level transmitter span ranges (non migration) is 0 to 1KPa to 2MPa, and the rated pressure of the liquid level flange is 1.6/4MPa, 6.4MPa, 10MPa, 150psi, 300psi or 600psi.



  • Adopts global leading high precision silicon
  • Strong anti-jamming performance
  • Accuracy +/-0.075%
  • Advanced stability and static pressure performance
  • Error less than +/-0.1%/10MPa
  • Internal integrated high sensitivity temperature transducer
  • Perfect thermal drift
  • Fast response time


Basic specification

Measurement parametergauge pressure, absolute pressure, liquid level
Measurement range

(Non migration)

Wetted parts materialSS316L, Hastelloy C, tantalum. FEP, PFA, PTEE  membranae tectoria
Output2-wire 4-20mA, HART communication optional, linear output or square root output available
Ambient temperature limitedLowest: depending on the filled liquid

Highest: 85℃

-20~65℃ (with LCD display, fluorine rubber O-ring)

temperature limited-30~400℃
Protection gradeIP67
Electrical connectorM20*1.5 cable sealing buckle, terminal suitable for 0.5-2.5mm2  cable
Process connector7/16 female at the low pressure, compatible with ANSI or DIN at high pressure. Directly install.