Sorry, this family of products is no longer available. The replacement family of products is 946 Vacuum System Controller.

250E Gas Inlet Pressure and Flow Control Module

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Overview

The 250E is a self-contained PID control module designed to provide optimized control of the total pressure or flow of a gas (or gases) in a dynamic closed-loop system. With the 250E, input can be supplied by a Baratron® Capacitance Manometer or other compatible vacuum gauge for closed-loop pressure control, or flow input can be measured by a mass flow transducer for closed-loop flow control. Its power supply has sufficient output to power most capacitance manometers and flow transducers.

Specifications

Type

250E Gas Inlet Pressure and Flow Control Module
For Use With

148J, 248D, and 154B Valves (A special version of the 250E is required to drive the 154 control valve. Contact Applications Engineering.)
Accuracy

0.25% of Full Scale 0.1, 1 or 10 VDC selectable on front panel
Power Input

115/230 VAC, 50-60 Hz, 50 Watts
Power Output

±15 VDC @ 250 mA (to power input transducers)
Signal Input

0 to ±0.1, 1 or 10 VDC
Output Signal

Input transducer signal: 0-5, 10 VDC into >10K Ohm load
Pressure control signal: 0-10 VDC

Display

Standard: analog error meter
Optional: 4½ digit LED input signal display
Input Impedance

>200K W
Mounting

bench-top or rack-mount
Control Loop Tuning Phase

Phase lead: 0.05 sec to 10 sec
Gain: 0.2% to 100%
Dimensions

9.5 inches W x 3.5 inches H x 9.0 inches D
Remote Control

Analog set point input: 0 to 5 VDC into 40K Ohm load
Multi-set point select (option): ground closure to select (one or four set points)
Valve close or auto operation: ground closure to select
Process limits (option): logic level and relay closure adjustable 0.5 to 100% of set point

Specifications

Type

250E Gas Inlet Pressure and Flow Control Module
For Use With

148J, 248D, and 154B Valves (A special version of the 250E is required to drive the 154 control valve. Contact Applications Engineering.)
Accuracy

0.25% of Full Scale 0.1, 1 or 10 VDC selectable on front panel
Power Input

115/230 VAC, 50-60 Hz, 50 Watts
Power Output

±15 VDC @ 250 mA (to power input transducers)
Signal Input

0 to ±0.1, 1 or 10 VDC
Output Signal

Input transducer signal: 0-5, 10 VDC into >10K Ohm load
Pressure control signal: 0-10 VDC

Display

Standard: analog error meter
Optional: 4½ digit LED input signal display
Input Impedance

>200K W
Mounting

bench-top or rack-mount
Control Loop Tuning Phase

Phase lead: 0.05 sec to 10 sec
Gain: 0.2% to 100%
Dimensions

9.5 inches W x 3.5 inches H x 9.0 inches D
Remote Control

Analog set point input: 0 to 5 VDC into 40K Ohm load
Multi-set point select (option): ground closure to select (one or four set points)
Valve close or auto operation: ground closure to select
Process limits (option): logic level and relay closure adjustable 0.5 to 100% of set point