Model R Irrometer - Tensionometer
For measuring soil moisture by using soil water tension
The Model R is the standard one-piece Irrometer for general use with
irrigated row, tree, and field crops, but can also be used in greenhouse
and nursery applications or for monitoring Vadoze Zones. Simply make a
hole and insert the tensionometer into the soil, fill it with distilled
water and prime the suction with the Vacuum Hand Pump (Model R Irrometer
Service Kit). After about 24 hours, the ceramic block will reach
equilibrium with the soil and give the moisture level. Leave it
installed in the soil and you can periodically check to see when your
crops or trees need additional irrigation.
Features a tough Butyrate plastic body that is impervious to soil
chemicals or electrolysis, a fixed porous ceramic tip designed to give
quick response to variations in soil moisture, and a hermetically sealed
gauge that indicates soil suction from 0 to 100 centibars (gauge
operates counter-clockwise). A large reservoir with a screw cap for
filling holds a reserve supply of water to replace water lost by action
of drying soil.
Partial unscrewing of cap releases air, and refills the tube from the
reservoir. All joints are permanently sealed. Irrometer fluid, supplied
with the Service Unit accessory, adds color to the water for easy water
level observation. The Model R Irrometer requires the Service Unit
accessory and the Soil Coring Tool with the initial order.
Hermetically Sealed Gauge —
Accuracy and long life are ensured by a
hermetically sealed cover with a
molded-in diaphragm that keeps dirt and
moisture out and compensates for
variations in temperature and barometric
Air-Free Gauge — The water seal
prevents air from entering gauge, so
gauge and chamber remain full regardless
of fluid level in instrument.
|The IRROMETER Body — is
tough durable plastic impervious to attack by soil
chemicals or electrolysis.
The IRROMETER — is available in standard
lengths of 6, 12, 18, 24 (15, 30, 45 & 60 cm)
Closure — Large cap for easy operation and
better control. Cap removes for filling reservoir.
Submerged valve gives a positive leak proof
seal. Servicing is instantaneous with a
twist of the wrist.
|Reservoir — holds a reserve
of fluid sufficient for several irrigation
cycles under average operating
conditions. Unscrewing cap part way
releases air and fills tube to replace fluid
lost by the action of drying soil.
Ceramic to Plastic — connections
permanently leak proof.
Ceramic Tip — has many times the strength of
conventional tips. It is more porous to give quick
response to variations in soil moisture.
Additional Accessories (Service kit
Model R IRROMETER Service Kit
Includes Vacuum Hand Pump, 1 oz. Irrometer Fluid, 25 Monthly Chart Forms
Irrometer 7/8” Insertion Tool, 30 inch
Irrometer 7/8” Insertion Tool, 30 inch - Provides proper hole diameter for best
contact between porous tip and soil. 30” Long.
- MATERIALS: Butyrate body, ceramic tip, neoprene stopper
- RESERVOIR SECTION DIMENSIONS:
HEIGHT: 4.75 in. (120 mm) – 5.125 in. (130 mm) including cap
DIAMETER: 2 in. (51 mm) – 2.15 in. (55 mm) including cap
BODY TUBE SECTION DIMENSIONS:
- LENGTH: Ranges from 6 in. to 24 in. (15 cm to 61 cm)
DIAMETER: .875 in. (22 mm)
- INSTRUMENT WEIGHT: 12 in. (30 cm) is .968 lb. (.439 kg) with
increases of .252 lb. (.114 kg) per foot
- CERAMIC TIP: White tip – used for most soil types
- WARRANTY: One year
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1471 Capital Circle NW, Suite # 13
Tallahassee, FL. 32303
Order Line (800) 258-7477
Phone (850) 580-4026
Fax (850) 580-4027
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