Page 376 - Praxair - Specialty Gases and Equipment Reference Guide

Accessories

Stand Alone Alarms

Two and Ten Point Alarms
Praxair’s alarm boxes are typically used in conjunction with
pressure switches to provide a means of visual and acoustic
monitoring of alarm signals. Standard operating conditions are
indicated by an illuminated green lamp. The lamp and horn check
button allows for self checking. If one or more alarm signals are
triggered, acoustic and visual signals are also emitted.

Specifications
n Power Supply n Effective Direction
110v (NC) Normally Closed
n Connection System n Signal Lamp
Two wire LED Two Point Alarm
PRS0010003
Ordering Information
Part Number Description
PRS00100003 Two Point Alarm
PRS00100006 Ten Point Alarm Intrinsic Safety
PRS00100003IB* Intrinsic Safety Barriers Barrier
* Must be purchased separately when being used in flammable gas service. PRS00100031B

Indicating Pressure Switches
The 550 series of switches are designed to provide pressure Section E – Gas Handling Equipment
monitoring for a wide variety of applications. These two inch
stainless steel gauges are capable of operating in conjunction
with Praxair’s alarms.
Specifications

n Gauge n Electrical Load
2" dial n Maximum switching voltage
24 VDC/VAC
n Connections
¼" MNPT lower mount n Maximum load 10 W
n Maximum current 0.5A
n Operating Temperature
-40 °F to 140 °F
(-40 °C to 60 °C)
Materials
n Gauge
Bourdon Tube, 316L

Ordering Information
Part Number Pressure Range
PRS550-1000 0-100 psi
PRS550-1001 0-300 psi
PRS550-1002 0-600 psi
PRS550-1003 0-1000 psi
PRS550-1004 0-3000 psi
PRS550-1005 0-6000 psi
Warning: Intrinsic safety barriers must be purchased when gauges
are being used in flammable service.

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