Fisher 646 Electro-Pneumatic Transducer

Specifications

• Area Classification

• Explosion Proof, Intrinsically Safe, Non-incendive, General Purpose, Flame Proof

• Certifications

• CSA, FM, ATEX, IECEx, CUTR, Regional

• Communication Protocol

• 4-20mA Analog

• Data Interface

• Wired

• Diagnostics

• No

• Input Signal

• Electric

• Max Outlet Pressure

• 20 psig

• Mounting Type

• Remote Mount, Actuator Mount

• Operating Temperature

• Standard Temperature

• Position Control

• Modulating Control

• Power Source

• Local

• Supply Media

• Air

The Type 646 electrical converter uses a converter module to convert the input signal from 4 to 20 mA into a proportional pneumatic output signal from 3 to 15psig (0.2 to 1.0 bar). The text converter module uses small parts with very small mass, and the mass of the parts is symmetrically distributed around the center of mass fulcrum to achieve balance. This balanced layout results in high performance and reduced sensitivity to vibration. An integrated pneumatic amplifier provides a high-capacity output to drive the pneumatic valve actuator control system without the need for additional superchargers or positioners. when

The converter can also provide stable operation when its output is sent to a small air chamber, such as a pneumatic positioner or other pneumatic device. Low sensitivity to vibration, high capacity and first-order hysteresis make the Type 646 converter ideal for mounting directly onto the valve/actuator. Connectors and ductwork for diagnostic testing can be installed on any Type 646 converter.

Input signal: 4-20mA direct current, the maximum voltage is 30V DC constant current.

Output signal: 3-15psig (0.2-1.0bar), positive action only

Air source pressure:

Recommended value: 20 psig (1.4bar)

Minimum value: 20 psig (1.4bar)

Max value: 50 psig (3.4bar)

Maximum steady state air consumption: The air consumption is proportional to the output pressure. The output pressure is 15

At psig (1.0bar), maximum consumption is 7.8scfh (0.20 standard m3/hour)

Maximum output air: When the input pressure is 20 psig (1.4bar), the output is 300scfh (8.0 standard m3/hour).

property

Reference accuracy: ± 0.5% of the total scale of the output range; Including lag, linearity and dead zone combined effects

Linearity: ± 0.5% of the total scale of the output range

Lag: 0.4% of the total scale of the output range

Response frequency: When the output signal of the converter connected to a typical input device is 10 Hz, the gain value is attenuated by 3dB

Temperature effect: Every 100 oF (55o C) change in temperature causes a ± 4% change in the total scale of the output range

Input pressure effect: Every 1psi change in input pressure causes a 0.2% change in the total scale of the output range

Vibration effects: When tested according to Condition 3 of SAMA standard PMC31.1, vibration effects are less than 1% of the total scale of the output range electromagnetic interference (EMI)

If you need to know the detailed parameters and prices and delivery time, please feel free to contact us