Boig & Hill, Inc. - Item # L90, L90 Pulsair - Loop-Powered Microprocessor Controlled Positioner
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All Categories > Worcester Controls > Controls > Positioners > L90 Pulsair - Loop-Powered Microprocessor Controlled Positioner > Item # L90  
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Item # L90 L90 Pulsair - Loop-Powered Microprocessor Controlled Positioner



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Pulsair

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L90 Pulsair - Loop-Powered Microprocessor Controlled Positioner
It is missing link in computer controlled process loops. This all electronic microprocessor based intelligent, pneumatic positioner offers the sophistication and performance to match that of today’s process control requirements.



 Specifications  Features  Principle of Operation  

Maintenance Manual

L90 Installation, Operation and Maintenance Instructions

Circuitry

Standard - Not intrinsically safe
Loop powered can be intrinsically safe

Modular Accessory System Series

90

Limit Switches

None
2 Mechanical

Output Voltage

No Voltage needed
Used only with 24VDC, 4-20mA output option for 4L90

Input Signal

4 - 20 mA

Minimum current required for operation

≥3.6 mA

Ambient temperature limit for operation

-4 to 140 oF

Air consumption at steady state

0.0082 SCFM

Static Destruction Limit

±40 mA

Dynamic Destruction Limit

±500 V

Optional Features - Mechanical Position Indicator

Series 4790 two-color, high impact plastic valve position indicator.

Optional Features - Position Indicator Board Output Signal current Rating

4 - 20 mA

Optional Proximity Switch - Mechanical/Electrical Life

1 operations

Optional Features - Mechanical Limit Switches - DC Voltage Rating

24 V

Optional Features - Mechanical Limit Switches - AC Voltage Rating

125 V

Characteristic

Linear (factory setting)
Equal Percentage 1:25
Equal Percentage 1:50
Freely Adjustable

Coating

Corrosion resistant baked epoxy finish standard.

Drive Connection

One piece stainless steel male shaft, top and bottom.

Pneumatic Power Supply

40-90 psi

Note

Barriers required for all wiring in hazardous areas for intrinsically safe operation.

Special Options

None
1000 ohm potentiometer output
5000 ohm potentiometer output
Breather/Drain
4-20 mA output

 MORE IMAGES 

· Positioner With Valve

· Block Diagram

 DOWNLOADS 

width= L90 Installation, Operation and Maintenance Instructions
(PDF, 696KB)

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