Flush Diaphragm Pressure Transmitter_Manufacturer_OEM/ODM Custom Solutions

Flush Diaphragm Pressure Transmitter Product Introduction

The HMP71 series features a flush diaphragm and cavity-free design, eliminating clogging and residue caused by viscous, particulate, or crystallizing media. Its high-strength stainless steel sensing diaphragm ensures excellent impact, erosion, and corrosion resistance, making it ideal for slurry, crude oil, food, and pharmaceutical applications.

A dedicated ASIC amplifier provides low-noise, high-linearity signal conditioning and temperature compensation, significantly enhancing output stability over the full temperature range. Optimized attaching, bonding and packaging processes reduce creep and hysteresis, delivering nonlinearity accuracy of ±0.25% FS and long-term stability better than 0.25% FS/year.

Flush Diaphragm Pressure Transmitter Application

Coatings & polyurethane equipment
Food/Pharma equipment
Paint inspection systems
Mud, slurry pumps, coal slurry, pulp, crude oil, asphalt
Oilfield drilling, logging, offshore platforms
Oil well measurement instruments
Other industrial sites needing anti-clogging, high vibration & impact resistance

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Flush Diaphragm Pressure Transmitter Semi-custom and full-custom designs

The HMP71 is ideal for demanding industrial applications requiring high ruggedness and reliability. It offers flexible choices of thread sizes, pressure ranges (up to 1,000 bar), electrical connections (cable or connector), wetted materials, and output signals.

HMP71 Datasheet

Performance

Accuracy *	≤±0.25%FS BSFL
Stability (1 year)	≤0.25%FS
Pressure Cycles
Proof Pressure	2X
Burst Pressure	5X ( Max 15k psi）

* Accuracy includes non-linearity, hysteresis and non-repeatability

Thermal

Operating Temperature	-40…125℃
Media Temperature	-40…125℃
Storage Temperature	-40…125℃
Compensated Temperature	-20…85℃
TC Zero	≤±0.5%FStypical，±1% Max
TC Span	≤±0.5%FStypical，±1% Max

Enviromantal

Isolation (Body to any Lead)	100 MΩ@250VDC
EMI/RFI Protection	Yes
IP Rating	>IP65
Vibration	±20g，1Hz~200Hz
Shock	50g，11msec，1/2sine

* IP Rating is dependent on electrical termination selected. Contact factory for more information.
** IP Rating applies when electrical connector is attached with the appropriate ingress protection.。

Electrical (Current)

Outputs	4~20mA
Excitation	9~36V
Current Consumption	<10mA
Output Load	0~1350Ω
Frequency Response (min)	<3ms Without Snubber
Zero Offset (of FS)	≤±0.25%FStypical，±0.5% Max
Span Tolerance (of FS)	≤ ±0.5% typical

Electrical (Voltage)

Outputs	0-5V, 1-5V, 1-6V, 0-10V
Excitation	13~36V
Current Consumption	<10mA
Output Load	>100kΩ
Frequency Response (min)	<2ms Without Snubber
Zero Offset (of FS)	≤±0.25%FStypical，±0.5% Max
Span Tolerance (of FS)	≤ ±0.5% typical

Outputs	0.5-4.5V ratiometric
Excitation	5V
Current Consumption	<10mA
Output Load	>100kΩ
Frequency Response (min)	<2ms Without Snubber
Zero Offset (of FS)	≤±0.25%FStypical，±0.5% Max
Span Tolerance (of FS)	≤ ±0.5% typical

Outputs	0.5-2.5V ratiometric
Excitation	3-5VDC
Current Consumption	＜3 mA
Output Load	>100kΩ
Frequency Response (min)	<2ms Without Snubber
Zero Offset (of FS)	≤±0.25%FStypical，±0.5% Max
Span Tolerance (of FS)	≤ ±0.5% typical