Product Description

VLF-401 pressure transmitter is a special product developed by our company for the refrigerant industry. Using the piezoresistive sensor core from an internationally renowned company, it converts the pressure of the measured medium into a 4~20mA, 0~5VDC analog signal through a highly reliable amplification circuit and precision digital temperature compensation and non-linear correction technology; unique anti-Condensation design prevents water vapor in the cavity from condensing and damaging the circuit board. High stability and high reliability can be widely evaluated in refrigeration industries such as air conditioners, refrigerators, freezers, water-cooled screw hosts, etc.

Features

The high-performance diffused silicon sensor core is equipped with a highly integrated bridge pressure sensor dedicated advanced chip for signal conditioning.

Digital temperature compensation and non-linear correction Anti-condensation design to prevent condensation from affecting the product

Compact appearance, easy installation, multiple signal outputs, standard Parker plug, wide adaptability High sensitivity, high precision, high stability

Full temperature zone temperature compensation, good electrical performance and long-term stability Warranty: 1 year

Technical Parameters

Pressure range	0～0.1 MPa…4MPa
Overload pressure	200%FS
Pressure type	Gauge pressure,Absolute pressure,Sealing pressure
Process connection	7/16-20UNF,can be customized
Accuracy	±1％FS,±0.5％FS
Temperature compensation range	-10～70℃
Long term stability	±0.3%FS/year
Working Temperature	-40～85℃
Storage Temperature	-40～125℃
Power Supply (V)	11-36VProportion0-5V		3-5V
Output Signal	4-20mA	0-5V	0-5V
Load Resistance (Ω)	50(U-10)Ω【4-20mA】,Greater than10KΩ【V】
Ingress	IP65
Protection
Material	Sensor: ceramic; shell: stainless steel 304; cable: PVC; waterproof ring: HNBR
Media adaptability	Suitable for various fluids without corrosion of 316L stainless steel
Vibration	10gRMS,(20～2000)Hz
Shock	100g,11ms
Insulation	Greater than100MΩ @250VDC
Response time	Less than1ms(@ 90%FS)
CE Approval	EMC: IEC61326-1 Btype Electrostatic discharge immunity: IEC61000-4-2 Electromagnetic field immunity: IEC61000-4-3 EFT immunity: IEC61000-4-4 Surge immunity: IEC61000-4-5