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EST3135 Air Conditioning Pressure Transducers

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EST3135 Air Conditioning Pressure Transducers | HAVC/VRF

EST3135 line is specially designed for VRF air-conditioning system. The product features low power, bidirectional over voltage protection, high overload capacity, great electrical strength and salt-spray resistance that can meet the special demands of VRF.

Features

  • Pressure type: Gauge Pressure
  • Range:0~50bar
  • Accuracy: ±1.0%F.S, ±2.0%F.S
  • Customized working temperature: -35℃~105℃
  • Signal output: 0.5~2.5…4.5Vdc
  • Power supply: 5±0.25Vdc
  • Housing material: Brass
  • Ingress Protection: IP65
  • OEM: Available

EST3 Series Pressure Transducer for Air Compressor | Air Conditioning | HVAC

ModelEST3110EST3110 BEST3120
EST3110EST3110BEST3120
Data SheetDownloadDownloadDownload
Range0~5bar…50bar0~5bar…50bar0~5bar…50bar
Accuracy±0.5%,±1.0%,±2.0%±1.0%,±4.0%±0.25%,±0.5%,±1.0%
Power Supply 10~30Vdc12~30Vdc10~30Vdc,5Vdc
Output 4~20mA,0.5~4.5V4~20mA,0.5~4.5V4~20mA,0.5~4.5V
Electrical ConnectionPackardM12X1/ GX12/16-7DIN43650, IP65; GX 16-7
Pressure ConnectionG1/4, NPT1/4, 7/16-20UNFG1/4, NPT1/4, 7/16-20UNFM20 x 1.5, G1/4, G1/2, NPT1/4, 7/16-20UNF
Ingression ProtectionIP67IP45/ IP65IP45/ IP68
ModelEST3122EST3135EST3123
EST3122EST3135EST3123
Data SheetDownloadDownloadDownload
Range0~5bar…50bar0~5bar…50bar0~5bar…50bar
Accuracy±0.5%±1.0%,±2.0%±0.5%,±1.0%
Power Supply 10~30Vdc,5Vdc5±0.25Vdc5Vdc
Output 4~20mA,0.5~4.5V0.5~2.5…4.5Vdc0.5~2.5…4.5Vdc
Electrical ConnectionPackard, DIN43650PackardPackard
Pressure Connection7/16-20UNF, 9/16-20UNFCooper Pipe Connection7/16-20UNF, 9/16-20UNF, M20 x 1.5, G1/4
Ingression ProtectionIP65IP65IP65

Applications

VRF Air-conditioning system

Technology

Piezoresistive based transducers rely on the piezoresistive effect which occurs when the electrical resistance of a material changes in response to applied mechanical strain. In metals, this effect is realized when the change in geometry with applied mechanical strain results in a small increase or decrease in the resistance of the metal. The piezoresistive effect in silicon is due primarily to changes at the atomic level and is approximately two orders of magnitude larger than in metals.

Sputter deposited thin film pressure sensor is a kind of Piezoresistive pressure sensors, difference exist that the thin-film sensor consists of a resistor pattern that is vaporized or sputter-deposited  onto the force-summing element (the measuring diaphragm). In some transducers the resistors are not directly mounted on the diaphragm but are on a beam linked to the diaphragm by a push rod.

Accuracy and range for EST 3 series

eastsensor accuracy map

eastsensor map map

Click to download

  • General Instruction and Datasheet-EST3135 GID-3-EV01
  • Product Enquiry