YT 1000 Electro-Pneumatic Positioner

Short Description:

The Electro-Pneumatic Positioner YT-1000R is used for operation of pneumatic rotary valve actuators by means of electrical controller or control system with an analog output signal of DC 4 to 20mA or split ranges.


Product Detail

Product Tags

Product Characteristics

No additional parts are necessary to change between single or double-acting actuators and direct or reverse acting.When the input signal current from the controller increases, the plate spring of the torque motor works as a pivot. As the armature receives the rotary torque in the counter-clockwise direction, the counter weight is pushed to the left. This will move the flapper to the left through the connecting spring, the gap between the nozzle and flapper widens causing the nozzle back pressure to drop.
As a result, the pressure balance in the constant pressure chamber is broken, and the exhaust valve presses the inlet valve b to the right. Then the inlet port B opens, and the output pressure OUT1 increases.The movement of the exhaust valve to the right also open exhaust port A, this causes the output pressure OUT2 to decrease. The increased port pressure of OUT1 and decreased port pressure of OUT2 generates a pressure differential across the actuator pistons. This will cause the pistons to rotate the pinion creating feedback to the positioner cam.The rotation of the cam increases the tensile force of the feedback spring acting on the balance lever. The actuator will rotate until the tensile force of the feedback spring and the force of the bellows are balanced. When the input signal decreases, the operation is reversed.
1.Corrosion Resistant Coated Aluminum Diecast Housing stands up to Harsh Environments.
2.Pilot Valve Design reduces Air Consumption by More than 50%.
3.Vibration Resistant Design maintains Superior Performance in Poor Conditions - No Resonance Effects from 5 to 200 Hz.
Optional Gauges and Orfices.

Technical Parameters

No.

YT-1000L

YT-1000R

Single action

Double action

Single action

Double action

Input Current

4 to 20m ADC*Note 1

Input Resistance

250±15Ω

Supply air pressure

1.4~7.0kgf/cm2 (20~100 psi)

Standard stroke

10~150mm*Note 2

0~90°

Air Source Interface

PT(NPT) 1/4

Pressure Gauge Interface

PT(NPT) 1/8

Power Interface

PF 1/2 (G 1/2)

Explosion Proof Grade*Note 3

KTL: ExdmllBT5, ExdmllCT5, ExiallBT6
ATEX: EExmdllBT5, JIS: ExsdllBT5
CSA: ExmdllBT5, NEPSl: ExiallCT6

Protection grade

IP66

Ambient
Temperature

Working
Temperature

Standard Type∶-20~70℃
High temperature Type: -20~120℃
Low tmperature Type: -40~70℃

Explosion Proof
Temperature

-20~60 ℃

Linearity

±1.0%F.S

Hysteresis

1.0%F.S

Sensitivity

±0.2%F.S

+0.5% F.S

+0.2%F.S

±0.5%F.S

Repeatability

±0.5%F.S

Air consumption

3LPM (Sup=1.4kgf/cm2, 20psi)

Flow

80LPM (Sup=1.4kgf/cm2, 20psi)

Material

Die-casting aluminum

Weight

2.7kg (6.1lb)

2.8kg (6.2lb)

The above parameters are the standard values tested by our company under the environment of ambient temperature of 20℃, absolute pressure of 760mmHg and relative humidity of 65%.
Note 1: YT-1000L can realize 1/2 segment control (1/2 stroke control) by adjusting the zero point and span.
YT-1000R needs to replace the inner spring to achieve 1/2 segment control (1/2 stroke control).
Note 2: For products with stroke less than 10mm or more than 150mm, please contact our company.
Note 3: YT-1000 series products have obtained various explosion-proof certifications, please mark the explosion-proof grade correctly when ordering the product.

Certifications

01 CE-VALVE POSITION MONITOR
02 ATEX-VALVE POSITION MONITOR
03 SIL3-VALVE POSITION MONITOR
04 SIL3-EX-PROOF SONELIOD VALVE

Our Factory Appearance

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Our Workshop

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Our Quality Control Equipment

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