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 imports

2

I/P Drive Method

Digital (PWM)

Analog (Voltage)  

Analog (Voltage)  

Analog (Voltage)   

Superior to imports  

3

I/P Power Consumption

0.8mw  

1.6mw  

5mw  

18mw  

Superior to imports  

4

Vibration Resistance Index  

20g  

20g  

10g  

10g  

Meets import standards

5

Fault Interlock

Yes (Built-in function)  

Yes (Built-in function)  

Requires external accessories  

Requires external accessories  

Meets import standards  

6

Temperature Drift Compensation

With compensation technology  

With compensation technology   

With compensation technology   

Without compensation technology   

Meets import standards  

7

Air Source Pressure

1.4-6bar  

1.4-6bar  

1.4-6bar   

1.4-7bar   

Meets import standards  

8

Air Quality

ISO8573-1 particulate matter grade 3,

Oil content less than 1mg/m3,

Dew point less than 10k  

ISO8573-1 particulate matter grade 3,

Oil content less than 1mg/m3,

Dew point less than 10k  

ISO8573-1 particulate matter grade 4,

Oil content 3g, dew point 3g

ISO8573-1 particulate matter grade 4,

Oil content 3g, dew point 3g

Meets import 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 imports  

10

Control Precision

0.1%-0.3% 

0.1%-0.3% 

0.3%-0.5%  

0.5%-1.0%  

Meets import standards  

11

Auto-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 imports  

12

Minimum Operating Current

3.4mA 

3.4mA 

3.5mA  

3.8mA  

Meets import standards  

13

Explosion-proof Standard

Exia IIC T6 

Exia IIC T6 

Exia IIC T6  

Exia IIC T6  

Meets import standards  

14

Explosion-proof Standard 

Exd IIC T6

Exd IIC T6

Exd IIC T6 

Exd IIC T6 

Meets import standards  

15

Backup Function 

Yes

No 

No 

No 

Superior to imports

16

Price 

Moderate 

High 

High 

High 

High Cost Performance 

Serial Number

Item

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 (irrelevant to air source pressure)

15

Output Characteristics

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

16

Auto-tuning Method

One-button auto-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

Give16mAinstruction, 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 or so 

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

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

One-button auto-tuning: In AUTO_RDT, press and hold the increase key for 5 seconds until the countdown ends, then release the key to Enter auto-tuning. After auto-tuning is completed, 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 opposite, change the value of P2_4 and save

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

Check if the feedback current and valve position are consistent. If 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 terminal 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 accompanied when the actuator is inflated

1) It is recommended to replaceIP

5

 Inflation is always given even without instruction after air is appliedOUT1Inflation

1) Repeatedly press and hold the increase and decrease keys in manual mode

2) Change 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) Change the positioner

7

 The displayed position does not change when the manual valve moves

1) Check if the feedback rod moves accordingly

2) Check if the potentiometer plug is properly inserted

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 moves accordingly

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  exhaust corresponds to P5_2, P5_4, P5_6

1) Overshoot: If it is an overshoot of inflation, first reduce P5_1. If it cannot be satisfied, appropriately reduce P5_3. Otherwise, modify the other corresponding parameter group, modifying by about 50 each time.

2) Undershoot: If it is an undershoot of inflation, appropriately increase P5_3. Otherwise, modify the other corresponding parameter group.

3) Slight oscillation: Reduce P5_5 and P5_6 by one-third each. If this does not work, reduce P5_3 and P5_4.

4) If it still cannot be resolved, try readjusting it.

13

 Control Deviation

1) Check the instruction display accuracy; if the deviation is large, EnterP8the menu to recalibrate.