YT-2501 Smart Positioner | Valve Actuators India
                     US A4
A4
US
Smart Positioners YT-2500 / YT-2501 / YT2550
Piezo technology with communications
Design features • Feedback signal. Analogue feedback signals with  
4 to 20 mA, mechanical and proximity switch options.
• Fail Freeze and Fail Safe function. Enables the valve 
maintain the last position (Fail Freeze) or move to a • PD control. Pre-calibrated and user configurable 
pre-determined position (Fail Safe) on the loss of electrical variables via front panel pushbutton menu.
power supply or the pneumatic supply air. • HART® communication. Allows commands, position 
• Auto calibration. Simple menu structure with options to feedback and diagnostics to be sent digitally over the 
auto calibrate all parameters or zero and end points only. current loop.
• LCD display. Alphanumeric digital display for process • Front panel pushbuttons for configuration. 4 robust 
values and calibration. and positive acting pushbuttons for field configuration.
• Low air consumption level. Almost zero air leakage.
YT-2500 Aluminium Enclosure 
5 45 139.6
(0.2) (1.77) (5.5)
144
64.6 (5.67)
(2.54)
YT-2500
4-M8*1.25P Tap
20 30 40
SMART POSITIONER
YT-2550 Stainless Steel Enclosure
YT-2500
216.8 113.8
SMART POSITIONER
(8.54) (4.48) 4-M8*1.25P Tap
216.8 113.8 5 45 139.6
(8.54) (4.48) (0.2) (1.77) (5.5)
YT-2501 Remote Mounting Option
128.9
105 91.5 55 (5.07)
(4.13) (3.6) (2.17) 26.4 96.5
74 25 CABLE CONNECTOR (1.04) (3.8)
(2.91) (0.98)
50
P.C.D ø
P.C.D ø
1.97)
(
97.5 103.5 17
CABLE CONNECTOR 4-M5*0.8P Tap (3.84) (4.07) (0.67) 4-M6*1.0P Tap
Dimensions: mm (Inches ")
18 Valve Positioners and Accessories
US
A4
US A4
97.5
(3.84)
126.3
20 (4.97)
97.5
(3.84)
98.6
(3.88)
54
24.3 35 13.5 (2.13)
(0.96) (1.38) (0.53)
30
(1.18)
12 30
(0.47) (1.18)
120.5
(4.74)
30
(1.18)
12 30
(0.47) (1.18)
49.75 70.75
(1.96) (2.79)
120.5
(4.74)
YOUNG TECH CO., LTD.
Made in Korea
YOUNG TECH CO., LTD.
Made in Korea
FEED BACK
MODULE
A4 US
 A4
 US
Smart Positioners YT-2500 / YT-2501 / YT2550
Item Type YT-2500 YT-2550 YT-2501 Product Code
Input Signal 4 to 20 mA DC YT-2501 - L - S - N - 2 - 4 - 2 - 3 - S - (1) 
Supply Pressure 0.14 to 0.7 MPa (1.4 to 7 bar)
Linear Type 10 to 150 mm
Stroke
Rotary Type 0 to 90° Model
YT-2500 = Aluminium housing
Impedance Max. 500 Ω @ 20 mA DC YT-2550 = Stainless steel house
Air Connection PT(NPT,G)1/4 NPT1/4 PT(NPT,G)1/4 YT-2501 = A luminium housing with  
Gauge Connection PT(NPT)1/8 NPT1/8 PT(NPT)1/8 remote sensor
Conduit G(PF,NPT)1/2, G(PF)1/2 G(PF,NPT)1/2, Motion Type
M20 M20 L  = Linear
Standard R = Rotary
-30 to 80 °C (-22 to 176 °F)
Type Acting Type
LCD -30 to 85 °C (-22 to 185 °F) S  = Single
Operating  D = Double
Temp. Explosion -40 to 60 °C (T5) 
Temp. -40 to 40 °C (T6) Explosion Protection
Remote -40 to 120 ° C YT-2500, YT-2550  YT2501
-
Sensor (-40 to 248 °F) N = Non-Explosion N = Non-Explosion
Linearity ±0.5% F.S. I   = A TEX, IECEx, NEPSI, KCs  I =   ATEX, IECEx, KCs
Hysteresis ±0.5% F.S. Lever Type
Linear  Rotary
Sensitivity ±0.2% F.S. 1 = 10 to 40 mm  1 = M6 x 34L
Repeatability ±0.3% F.S. 2 = 20 to 70 mm  2 = M6 x 63L
Air Fail Freeze 0.01 LPM (sup = 0.14 MPa) 3 = 50 to 100 mm 3 = M8 x 34L
Consumption 4 = 100 to 150 mm 4 = M8 x 63LFail Safe 6 LPM (sup = 0.14 MPa)    5 = NAMUR (YT-2501)
Flow Fail Freeze 60 LPM (sup = 0.14 MPa)
Capacity Conduit & Air ConnectionFail Safe 40 LPM (sup = 0.14 MPa) 1 = G1/2 - PT1/4 
Output Characteristics Linear, EQ%, Quick Open user set (18 Point) 2 = G1/2 - NPT1/4 
Material Aluminium Stainless Steel Aluminium 3 = G1/2 - G1/4 
Diecasting 316 Diecasting 4 = M20 - NPT1/4 
5 = NPT1/2 - NPT1/4 
Ingress Protection  IP66
ATEX, IECEx Communications
Ex ia IIC T5/T6 Gb,  0 = NONE
2 = HART protocol communication
Ex iaD IIC T85°C/T100°C IP6X
Explosion Protection Type NEPSI - Output Options
Ex ia IIC T5/T6 0 = NONE
1 = 4 to 20 mA feedback
KCs 2 = Limit switch - Mechanical Type (YT-2500 and YT-2550 only)
Ex ia IIC T5/T6, EX iaD IIIC T100°C/T85°C 3 =  Limit switch - Proximity Type (YT-2500 and YT-2550 only)
Communication (Option) HART (ver.5) 4 =  4 to 20 mA feedback + Limit switch - Mechanical Type) 
Mechanical AC 125 V, 3 A     - (YT-2500 and YT-2550 only)
Type (Omron) DC 30 V, 2 A 5 =   4 to 20 mA feedback + Limit switch - Proximity Type 
L/S Rating (YT-2500 and YT-2550 only)
Proximity -
Type (P&F) DC 8.2 V 8.2 mA Fail Option
Weight Body 1.5 kg (3.3 lb) 2.9 kg (6.4 lb) 1.5 kg (3.3 lb) F = Fail Freeze
S = Fail Safe
Linear - - 0.6 kg (1.3 lb)
Remote Cable Length (YT-2501 only)
sensor Option for YT-2501 only. Standard cable length is 5 m.
Rotary - - 0.9 kg (2.0 lb) 1 = 5 m
Remote 2 = 10 m
sensor 3 = 15 m
4 = 20 m
Keeping the World Flowing 19
 US
 A4
A4 US