115788-116 Industrial Pressure Transmitter Assembly

Module Feature

115788-116 is factory calibrated heavy-duty pressure transmitter assembly for industrial rotating machinery.

It adopts piezoresistive sensing element, all stainless steel wetted construction, sealed housing design for vibration resistance. It outputs standard 4-20mA analog signal proportional to measured pressure value, supports loop power supply. Internal surge and EMC protection circuit prevents damage from field electrical interference. It can be used on compressor lube oil, fuel gas and hydraulic pipeline, and is widely stocked as OEM maintenance spare for engine and turbomachinery monitoring cabinet.

Working principle

Process pressure acts on the internal sensing diaphragm.

Diaphragm deformation changes resistance of the piezoresistive bridge. Signal conditioning circuit converts bridge variation to linear 4-20mA output signal. The analog signal is sent to PLC or DCS AI channel for pressure display, high/low alarm and equipment safety interlock control.

Onboard components

Piezoresistive sensing diaphragm, signal conditioning PCB, loop power circuit, EMC protection circuit, stainless steel process fitting, sealed electrical connector, status indication circuit.

LED indicators

Front LEDs indicate power supply status and fault alarm status.

Hardware self‑diagnosis

Built-in supervision detects overpressure, underrange, open loop, short circuit and internal sensor failure. Fault information can be viewed from control system workstation.

Programming software

DCS configuration tool, used for pressure range scaling and alarm threshold setting.

Electrical & Process Parameters

Model:115788-116 Brand:OEM heavy-duty sensor spare Device type:Loop powered industrial pressure transmitter Function:Convert fluid pressure to 4-20mA analog signal for machinery protection and monitoring

Mechanical & Structure

Mounting:Thread port inline bolt mounting Protection class:IP67 Housing:316L stainless steel housing

Environmental

Operating temperature:-40℃ ~ +105℃ Storage temperature:-40℃ ~ +85℃ Ambient humidity:5~95% non‑condensing

Certification:CE Status:Original OEM machinery monitoring spare

Installation

Depressurize pipeline before replacement.

Tighten process thread to specified torque, use shielded 2-wire signal cable, perform zero point calibration and loop test after installation.

Interface

Threaded process pressure port, circular / M12 electrical signal connector.

Diagnostic

Signal drift: Diaphragm fatigue, medium contamination or zero offset. No output: Loop power missing, wiring open or internal circuit burnout. Overrange alarm: Exceeding measuring range or blockage at pressure tap.

Product Brief

115788-116 pressure transmitter, heavy-duty 4-20mA pressure sensing spare for compressor and engine hydraulic & lube oil monitoring loop replacement.