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“A” Series Automatic Switches are designed for use on
Irrometer instruments and provide direct switching capabilities in addition to indicating soil moisture status. Soil water tension readings greater than the
moisture set point can activate an irrigation valve solenoid, time clock or
warning device. A switch mechanism is mounted on the tee fitting between the
gauge and the instrument body and can be adjusted to the desired set point.
The gauge reads in centibars (cb) or kilopascals (kPa) of soil water tension.

Specifications :
Brass switch housing with adjustment screw and 18 inch flying lead wires
Weight : 0.15 lbs (0.07 kg)
Range : 10 to 95 centibar (kPa) with less than 10% of actuation point differential
Mechanism : SPST Creep action switch with Buna-N diaphragm, closed at and drier than set point, rated for 1,000,000 cycles

Available with switch closed past setting
Connection : 1/4 inch brass male NPT with tee and gauge, for Models R, S, SR, LT, MLT , TG
Switch rating : 24 VAC 4 amp maximum. Includes 18 inch (45 cm) AWG 18 wire leads (2)

Available for AC or DC circuits : compatible with any 24 volt AC valve system and DC controllers with a sensor circuit
Dimensions : 1.64 inch (41.6 mm) body 0.94 inch (23.8 mm) hex
Repeatability category : ± 3% of full set point range at 70°F (21°C)

Protection category : IP 67, CE marked, RoHS compliant

Additional information

Gamme de tension

0-40 cb (LT), 0-80 cb (SR)


15 cm, 30 cm, 45 cm, 60 cm, 90 cm