Extreme Low Pressure/Vacuum Sensor Model 121 DUD(L)

This rugged and reliable manometer switch has been designed to work in the toughest environmental conditions, including vibration, temperatures, humidities, corrosives, etc., which normally would destroy other sensors.

This manometer switch is designed to monitor the very small pressure/vacuum conditions existing typically in engine crankcases, processing vessels, etc.

Key Benefits

Direct reading on pressure or vacuum.
Easy verification of the mechanical working conditions.
Adjustment capabilities from approximately 1/4" of water column up to 9".
Progressive reaction only to continuos signal and not to temporary surges.
Resetting or dead band of less than 1/16" H₂0.
Repeatability within .010" throughout the entire range.

Specifications

MODEL NO.	OVERALL HEIGHT	SIGHT GLASS LENGTH
121 DUD(L)	14 1/2 in.	12 in.

RESISTIVE LOAD
CONTACT RATING..........1/2 AMPS @ 125 VAC

TEMPERATURE
RANGE..........................................-65°C TO 150°C

LIFE EXPECTANCY
FULL LOAD, 125 VDC..............2 BILLION PLUS

OPERATING
PRESSURE*............................................0 - 15 PSI

ADJUSTABLE PRESSURE
RANGE.............10" H20 PRESS TO 10" H20 VAC

MAXIMUM
TEST PRESSURE.......................................150 PSI

OPERATING
TEMPERATURE..........................-32°C TO 108°C

* Other operating pressures, temperatures and materials are available for different types of applications.

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