Rotork Type Valve Positioner

YT1000L Valve Positioner — Rotork YTC New Module

Rotork-pattern YT-1000L, new-generation module

The new-module version of the Rotork-pattern linear positioner. This is the build offered where buyers want the smart-positioner behaviour described for the YT-1000 range: automatic detection of zero, full range and friction coefficient instead of manual adjustment.

New-generation internal module on the Rotork YTC linear pattern
Automatic detection of zero point, full stroke and friction coefficient
Split-range use: one valve on 4–12 mA, the second on 12–20 mA
Flow-characteristic correction through the feedback cam
Stroke 10–150 mm, IP66, -20 to +70 °C

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Typical duty: Split-range control pairs and loops that are re-tuned often enough that manual zero/span setting costs real commissioning time.

Specification

YT-1000L specification (EAA Electric data sheet)
Input signal	4–20 mA DC
Impedance	250 ± 15 Ω
Supply pressure	1.4–7 kgf/cm² (20–100 psi)
Stroke	10–150 mm
Air connection	PT (NPT) 1/4
Gauge connection	PT (NPT) 1/8
Conduit	PF 1/2 (G1/2)
Explosion proof	Ex dm IIB T5 / Ex dm IIC T5 / Ex ia IIB T6
Protection	IP66
Ambient temperature	-20 to +70 °C operating; -20 to +60 °C explosion-proof
Linearity	±1 % F.S. single acting / ±2 % F.S. double acting
Hysteresis	±1 % F.S.
Sensitivity	±0.2 % F.S. single acting / ±0.5 % F.S. double acting
Repeatability	±0.5 % F.S.
Air consumption	3 LPM (supply 1.4 kgf/cm², 20 psi)
Flow capacity	80 LPM (supply 1.4 kgf/cm², 20 psi)
Material	Aluminium diecasting
Weight	2.7 kg (6.1 lb)
Acting type	Single acting (S) or double acting (D)
Lever type	10–40 / 30–70 / 60–100 / 100–150 mm
Orifice type	Ø1, Ø2 or none
Connection type	PT or NPT

Technical background

Type YT-1000L Electro-pneumatic valve positioner is used for operation of pneumatic linear valve actuators by means of electrical controller or control system with an analog output signal of DC 4 to 20 mA or split Ranges.

YT1000L Electro Pneumatic Valve Positioner- Smart valve positioner The intelligent valve positioner is an intelligent process control instrument based on microprocessor technology and adopts digital technology for data processing, decision generation and two-way communication.

YT1000 EP Positioner does not require manual adjustment and can automatically detect the zero point, full range, and friction of the regulating valve. Coefficient, automatically set control parameters. Overview A valve positioner that does not require manual adjustment, can automatically detect the zero point, full stroke, and friction coefficient of the regulating valve, and automatically set the control parameters.

4. For split-range adjustment, two regulating valves operate a set of equipment respectively, one regulating valve receives 4-12mA electric signal, and the other valve receives 12-20mA electric signal. 5. Used to change the flow characteristics.

Questions buyers ask

What does the smart module actually remove from commissioning?

Manual adjustment: it detects the zero point, full stroke and friction coefficient of the valve and sets the control parameters automatically.

Can two of these run one piece of equipment in split range?

Yes — that is the documented split-range arrangement, one valve on the 4–12 mA band and one on 12–20 mA.

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