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Process MEASUREMENT

Signal CONDITIONING

Signal Isolators and Repeaters

A/M Loaders & Valve Positioner

Heater Controllers

I / P Converters

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You are here > Product Range >> Signal Conditioning >> A/M Loaders & Valve Positioner

   
 

AUTO MANUAL LOADERS & VALVE POSITIONERS

     

Signal Isolators are used to isolate DC signals and provides a repeater signal with isolation between input, output and the instrument’s power supply. Use of Signal Isolators / repeaters prevent ground loop problems in complex control loops involving multiple grounds, loop-powere bulk supplies in 2-wie systems, unisolated cards in PLCs etc.

Lectrotek signal isolators are available in electronic and smart (microprocessor-based, field programmable designs).

 
Electric Valve Positioners
Auto manual Stations / Manual Loaders
Valve Position Transmitters (R/I Converters)
 

Model - Electric Valve Positioner Tempra-VP

 
  Model  Tempra-VP Electric Valve Positioner
FEATURES

Interfaces electrical actuators, modulating motors, dampers etc. with DC control signals
Accepts DC control signals 4-20mA, 1-5V DC etc. from controllers, PLC, DCS systems, etc.
Accepts resistance feedback from position potentiometers on actuator
Provides Open-Close (or Up-Down) relay outputs to osition actuator in accordance with input and feeback.
Auto-manual mode option
92 x 92 mm panel cutout mounting

SPECIFICATIONS

Inputs : 4-20mA, 1-5V DC, 0-10V DC etc. (control signal)
Feedback : 0-135, 0-500, 0-1K ohm etc. actuator position transmitters
Outputs : Open-Close (Up-Down) relays
Relay rating : 7A, 240V AC
Indication : 10-segment LED bargraph for valve position & LEDs for
Feedback open condition :

LED provided for valve feedback open condition. In pot open mode, Tempra-VP output positions valve to extreme (open/close) end.

Connection : Screwed terminals to instrument rear
Calibration : Zero / span adjustments provided for input and dead band
Mounting : 92 x 92 mm panel cutout

 

       Model - Tempra-VP

Datasheet

       
 

Model - LTRON-AML Auto-Manual Loader

 
Model LTRON-AML Auto-Manual Loader
   
FEATURES

Interfaces control signals from controllers/PLC/DCS control system with final operating devices.
Applied as manual control device during plant start-up or emergency shutdown.
Accepts 4-20mA, 1-5V, 0-10V etc. DC control signals from control system (for auto-Manual loaders).
Provides 4-20mA, 1-5V, 0-10V etc. DC control signals to final control element in Auto or manual modes.
In auto mode, input signal is repeated as output. In manual mode, user can select output independent of input.
Display: 2 nos. 4-digits, 7-segment LEDs, indicates input/output
92 x 92 mm panel cutout mounting
SPECIFICATIONS
Inputs : 4-20mA, 1-5V DC, 0-10V DC etc. (control signal)
Outputs :  4-20mA, 1-5V DC, 0-10V DC etc. (to final control element)
Indication :  2 nos. 4-digits, 7-segment LEDs, indicates input/output
Controls :

Push buttons to operate Auto & Manual modes, and decrease / increase

      Selector switch for auto or manual mode selection
Connection :  Screwed terminals to instrument rear
Calibration : From keyboard
Mounting : 92 x 92 mm panel cutout

      Model - LTRON-AML

 

Datasheet

 
   
 

Model - 782 & 782F Resistance-to-Current Transmitters

 
Model

782 & 782F
(
Valve Position Transmitters (R/I Converters)

   
FEATURES

Accepts 0-135, 0-500, 0-1K ohm etc. from actuator feedback pots.

Provides 4-20mA, 2-wire transmitter signal as feedback for indication & control purposes.

Available in field mounted and panel surface / DIN –rail mounted versions.

SPECIFICATIONS
Type : Fixed input
Inputs : 0-135, 0-500, 0-1K ohm etc. from actuator feedback pots
Power :  12-38V DC, 2-wire loop powered
Output :

4-20mA DC , 600 ohms load @ 24V DC power

Enclosure : Field-mounted IP-65, ABS or die-cast aluminium (Model 782),
    : Panel surface or DIN-rail mounted, IP-40 enclosure (Model 782-F)
Mounting : Field (782) or control room/junction box/panel etc. (782F)

      Model - 782 & 782F

 

Datasheet

 
 
   
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