Serial Number

Performance Indicators

TORLEO (China)

ABB (Switzerland)

SAMSON (Germany)

Azbil (Japan)

Comparison Description

1

Pneumatic component characteristics

Digital I/P converter

Pneumatic 3/3 slide valve

Analog I/P converter

Pneumatic 3/3 slide valve

I/P converter

Pneumatic amplifier

I/P converter

Pneumatic amplifier

Superior to imported products

2

I/P drive method

Digital (PWM)

Analog (voltage)

Analog (voltage)

Analog (voltage)

Superior to imported products

3

I/P power consumption

0.8mw

1.6mw

5mw

18mw

Superior to imported products

4

Vibration resistance index

20g

20g

10g

10g

Reaches imported standards

5

Fault interlock

Yes (built-in function)

Yes (built-in function)

Requires external accessories

Requires external accessories

Reaches imported standards

6

Temperature drift compensation

With compensation technology

With compensation technology

With compensation technology

Without compensation technology

Reaches imported standards

7

Air source pressure

1.4-6bar

1.4-6bar

1.4-6bar

1.4-7bar

Reaches imported standards

8

Air quality

ISO8573-1 particulate matter class 3,

Oil content less than 1mg/m3,

Dew point less than 10k

ISO8573-1 particulate matter class 3,

Oil content less than 1mg/m3,

Dew point less than 10k

ISO8573-1 particulate matter class 4,

Oil content 3g, dew point 3g

ISO8573-1 particulate matter class 4,

Oil content 3g, dew point 3g

Reaches imported standards

9

Steady-state air consumption

0.056Nm3/h

Irrelevant to air pressure

0.085Nm3/h

Irrelevant to air pressure

0.11Nm3/h

Irrelevant to air pressure

0.24Nm3/h(1.4bar)

0.3Nm3/h(5bar)  

Superior to imported products

10

Control Precision

0.1%-0.3% 

0.1%-0.3% 

0.3%-0.5%  

0.5%-1.0%  

Reaches imported standards

11

Self-tuning

One-button foolproof setting

2-3 minutes 

Multi-step menu setting

3-5 minutes 

Multi-step menu setting

3-5 minutes

Toggle switch setting

8-15 minutes 

Superior to imported products

12

Minimum Operating Current

3.4mA 

3.4mA 

3.5mA  

3.8mA  

Reaches imported standards

13

Explosion-proof Standard

Exia IIC T6 

Exia IIC T6 

Exia IIC T6  

Exia IIC T6  

Reaches imported standards

14

Explosion-proof Standard 

Exd IIC T6

Exd IIC T6

Exd IIC T6 

Exd IIC T6 

Reaches imported standards

15

Backup Function 

Yes

No 

No 

No 

Superior to imported products

16

Price

Moderate 

High 

High 

High 

High Cost Performance 

Serial Number

Project

Explosion-proof Type

Explosion-proof Type

1

Input Signal

4-20mA, can be set as proportional control input

The proportional range can be set between 20-100%

2

Input Pressure

1.4-6kgf/cm²(0.14-0.6Mpa)

3

Stroke

10-150mm or 0-120º

4

Impedance

Maximum 460Ω/20mA(DC)

5

Air Source Interface

PT (NPT) 1/4

6

Pressure Gauge Interface

PT (NPT) 1/8

7

Power Interface

PF 1/2 (G 1/2)

8

Repeatability

±0.2%F.S.

9

Operating Temperature

-30℃∽85℃

10

Explosion-proof Temperature

-40℃∽40℃

11

Linearity

±0.3%F.S.

12

Hysteresis

±0.2%F.S.

13

Sensitivity

±0.2%F.S.

14

Air Consumption

Less than 0.03kg/h (irrespective of air source pressure)

15

Output Characteristics

Linear, quick-opening, equal percentage, user-defined

16

Self-tuning Method

One-button self-tuning

17

Material Grade

Die-cast Aluminum

Stainless Steel 316

18

Explosion-proof Grade

Exia IIC T4-T6

19

Explosion-proof Grade

Exd IIC T4-T6

20

Weight

2kg

3.6kg

Give16mAinstructions, setMAN-SENSmode

Air source: Adjust the air source to the required pressure (e.g., 0.4 MPa), and check the airtightness of the fitting 

Set actuator type: Set P1-1 to LINE, and select YES in P1_6SAVE to save

Move the valve up and down to see if the angle between the lever and the horizontal is within-30degrees to+30degrees 

Check if the valve is stuck: In MAN-SENS mode, long-press the increase or decrease button to see if the valve runs smoothly 

Set the upper and lower limits of the valve: This valve only needs to set the upper limit value in P3_2

One-button auto-tuning: In AUTO_RDT, long-press the increase button for 5 seconds until the countdown ends, then release the button to Enter auto-tuning. After auto-tuning is complete, it will automatically Enter AUTO_RDT operation. The tuning time is about 2-3 minutes

Check if the valve position and instruction are consistent: If they are opposite, change the value of P2_4 and save

Check if the display and position are consistent: If they are opposite, change the value of P4_3 and save

Check if the feedback current and valve position are consistent. If they are opposite, change the value of P7_3 and save 

Check the control effect 

End 

Serial Number

Problem

Solution

1

 The LCD screen does not light up when current is applied

1) Check if the command line is reversed

2) Check if the current reaches the terminals of the board

3) Unplug the plug connected to the main board. If it still does not light up, the main board is faulty; if it recovers, the unplugged component is faulty

2

 There is an air leak sound outside the positioner after air is applied

1) Check the fitting

2) Check the air tube

3) Check the actuator

3

 There is a significant air leak sound inside the positioner after air is applied

1) Check between the pressure gauge block and the positioner body. If so, tighten it. If it still leaks, reinstall the gasket

2) Check if the fixing screws of the IP are tightened, and check the gasket under the IP

3) The IP may be leaking

4

 Exhaust is always present when the actuator is inflated

1) It is recommended to replaceIP

5

 Inflation is always applied after air is applied, but no instructions are givenOUT1Inflation

1) Manually press and hold the increase and decrease buttons repeatedly in manual mode

2) Replace IP

6

 The valve does not move and the pressure does not increase in manual mode

1) Check for external air leaks

2) Try restoring factory settings

3) Replace the positioner

7

 The display position does not change when the manual valve moves

1) Check if the feedback rod is moving

2) Check if the potentiometer plug is inserted correctly

3) Check if the potentiometer rotates with the gear

8

 CALC_ERR

1) Check if the valve is stuck

2) Check if the feedback rod is moving

9

 ZERO_ERR

1) Determine the zero position of the positioner. At this time, is the horizontal deviation of the feedback rod too large?

10

 NO_SCALL

1) Check if the up and down times are sufficient

2) Check if the feedback rod is loose

11

 Tuning inSD6does not move

1) Check if the installation is reasonable

2) Check if the feedback rod angle is less than 60°. If it is less than 60°, increase it

3) Retune

12

 Poor control effect

First determine whether the upward control is poor or the downward control is poor, and modify the corresponding parameters to improve it. Generally, inflation corresponds to P5_1, P5_3, and  P5_5, and exhaust corresponds to P5_2, P5_4, and P5_6

1) Overshoot: If it is inflation overshoot, first reduce P5_1, if it cannot be satisfied, then appropriately reduce P5_3, otherwise modify the other corresponding parameter group, modify about 50 each time

2) Undershoot: If it is inflation undershoot, then appropriately increase P5_3, otherwise modify the other corresponding parameter group

3) Small amplitude oscillation: Reduce P5_5 and P5_6 by one third each, if it doesn't work, reduce P5_3 and P5_4

4) If it still cannot be solved, try readjusting it

13

 Control Deviation

1) Check the instruction display accuracy; if the deviation is large, EnterP8Menu Recalibration