Cảm Biến Áp Suất Ie1-S-8-M-B05C-1-4-F-P-E 2130B000S00 Gefran, Gefran-Pressure Transmitters

IMPACT MELT PRESSURE TRANSMITTERS IE

SERIES AND PLC VERSION

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The “IMPACT” series of Gefran, are pressure transmitters, without transmission fluid, for using in High temperature environment (350°C). Medium pressure is transferred directly to the sensitive silicon element via a thick diaphragm. Strain is transduced by a micro-worked silicon structure (MEMS). The operating principle is piezoresistive

“IMPACT” is Gefran’s exclusive series of high-temperature pressure sensors that use the piezoresistive principle. The main characteristic of “IMPACT” sensors is that they do not contain any transmission fluid. The sensitive element, directly positioned behind the contact membrane, is realised in silicon through microprocessing techniques. The micro structure includes the measurement membrane and piezoresistors. The minimum deflection required by the sensitive element makes it possible to use very robust mechanics. The process contact membrane can be up to 15 times thicker than the membrane used in traditional Melt sensors.

ADVANTAGES

- Total compatibility with the European RoHS Directive

- High strength

- Long life

- Working temperature: up to 350°C

- Excellent read stability over time

- Fast response time

MAIN FEATURES

• Pressure ranges: 0-100 to 0-1000 bar / 0-1500 to 0-15000 psi

• Accuracy: < ±0.25% FSO (H); < ±0.5% FSO (M)

• Standard threading 1/2-20UNF, M18x1.5

• Other types of diaphragms are available on request

• Autozero function on board / external option

• 15-5 PH stainless steel diaphragm GTP+ coated

AUTOZERO FUNCTION

All signal variations in the absence of pressure can be eliminated by using the Autozero function. This function is activated by closing a magnetic contact located on the transmitter electronics or by an external contact. The procedure is allowed only at zero pressure. The Autozero function should be activated ONLY when the sensor is completely installed on the system.

SELF DIAGNOSTICS

Below the conditions detected by the sensor self-diagnostics: · Cut cable / device non connected / broken power supply, output <3.6mA · Broken primary element / pin detachment, output >21mA · Pressure above 200% of the span, output <3.6mA · Pressure below the -30% of the span related to the zero value, output <3.6mA · Voltage monitor in case of overvoltage/undervoltage/voltage variation in the electronics, output <3.6mA · Program sequence error, output <3.6mA · Overtemperature on the electronics, output <3.6mA · Error on the primary element output or on the first amplification stage, output <3.6mA

OPTIONAL RELAY OUTPUT FOR EXCESS PRESSURE PROTECTION

Safety relay characteristics:

· Activation threshold to be defined in the order code

· Rated carry current: 1A

· Rated voltage: 24Vdc ± 20%

· Switch accuracy: 2 x sensor accuracy

· Hysteresis: 2% FSO

NAMUR COMPLIANCE

The sensors are tested according to Namur NE21 recommendations. The same compatibility is valid for the NE43 Namur recommendation with the following sensor behaviour in case of breakdown: · Cut cable: breakdown information as the signal is <3,6mA · Device not connected: breakdown information as the signal is <3,6mA · Broken power-supply: breakdown information as the signal is <3,6mA or in case of performance problems: · most common failures on primary sensors: the signal goes to>21mA Note: in all the remaining situations, the output signal is always included between 3,6 and 21mA. Recommendation: the error level set by the customer (e.g. maximum pressure value) has to be inside the nominal range

Liên hệ: Nguyễn Chí Hải

Sdt: 0398991575

Gmail: hai@ansgroup.asia