Irrometer - Model SR Series - Tensiometer
From Soil Moisture Sensors - Irrometer Tensiometers
Measuring soil moisture allows a grower to make informed irrigation scheduling decisions that will improve yields and quality while reducing water, fertilizer, labor, and energy costs. The IRROMETER SR 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.
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Features:
- 0-100 cb (kPa) range gauge
- Replaceable ceramic tip
- Direct measurement of soil water tension
- Large reservoir for quick maintenance
- Stainless Steel IP 67 gauge designed for harsh environments
- Membrane vented gauge for temperature and elevation compensation
Product Details
Available in different lengths to measure at desired depths in the root zone, the standard gauge can also be replaced with electronic options for data devices, or an automatic switch which can be triggered at desired soil water tension levels.
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.
Specifications
- MATERIALS: C.A.B plastic, ceramic, neoprene, EPDM, bronze, brass, stainless-steel
- TIP: SR (white) threaded replaceable tip, suitable for a wide range of soil types
- DIAL SIZE: 2.5 in. (63 mm)
- GAUGE CASE: AISI 304 Stainless steel membrane vented case, IP 67
- GAUGE WINDOW: Polycarbonate with EPDM gasket seal
- GAUGE DIAL: Scale of 0-100 cb (kPa), white with contrasting green markings
- ACCURACY: +3-2-3% of gauge span, ASME B40.1 Grade B
- OPERATING TEMPERATURE: 33° to 150° F (0.5° to 65° C )
- WARRANTY: One year
- WEIGHT: 12” (30cm) instrument: 0.97 lb (0.44 kg), increasing 0.25 lb. (0.114 kg) per ft.
- DIMENSIONS:
- Reservoir Section: 5.125” (130 mm) ht, 2” (55 mm) dia
- Water Tube: 6” (1 5cm) to 60” (150 cm) len, .875” (22 mm) dia
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