Irrometer - Model MLT Series - Tensiometer

The IRROMETER MLT measures soil moisture by interacting with the soil through a porous ceramic tip. As soil dries, it tries to pull water out of the instrument, creating vacuum measured by the gauge. This is a direct, physical measurement of the same tension plant roots experience, requiring no electronics, batteries, or calibrations to operate. IRROMETER tensiometers have been on the market since 1951 and are proven by decades of commercial usage and field research, trusted enough to serve as the calibration standard for other sensors.

IRROMETER tensiometers are constructed of C.A.B., a durable, renewable, plastic designed for outdoor use. Fitted with stainless-steel gauges for many years of reliable service in field conditions, the gauges incorporate a membrane vent which allows them to maintain accuracy during changing conditions without sacrificing protection.

• Compact size for small containers
• 0-40 cb (kPa) range gauge for coarse, sandy, or potting-soil applications
• Replaceable tip assembly
• Direct measurement of soil water tension
• Membrane vented gauge for temperature and elevation compensation

• MATERIALS: C.A.B plastic, ceramic, EPDM, bronze, brass, stainless-steel
• TIP: MLT (blue) replaceable tip
• DIAL SIZE: 1.5 in. (38 mm)
• GAUGE CASE: Stainless steel with membrane vent
• GAUGE WINDOW: Polycarbonate
• GAUGE DIAL: Scale of 0-40 cb (kPa), white with contrasting blue markings
• ACCURACY: +-5% of gauge span, ASME B40.1 Grade D
• OPERATING TEMPERATURE: 33° to 150° F (0.5° to 65° C)
• WARRANTY: One year
• DIMENSIONS:
  • Length: 6.75” (171mm)
  • Diameter: reservoir: 1” (25 mm) tip/tube: 0.5” (13mm)
  • Weight: 0.17 lb. (0.077 kg)