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Resipod

Portable Resistivity Meter

Resipod

Surface resistivity measurement provides extremely useful information about the state of a concrete structure. Not only has it been proven to be directly linked to the likelihood of corrosion and the corrosion
rate, recent studies have shown that there is a direct correlation between resistivity and chloride diffusion rate. The versatility of the method can be seen in these example applications:

Estimation of the likelihood of corrosion
Indication of corrosion rate
Correlation to chloride permeability
On site assessment of curing efficiency
Determination of zonal requirements for cathodic protection systems
Identification of wet and dry areas in a concrete structure
Indication of variations in the water/cement ratios within a concrete structure
Identification of areas within a structure most susceptible to chloride penetration
Correlation to water permeability of rock

Resipod is a fully integrated 4-point Wenner probe, designed to measure the electrical resistivity of concrete in a completely non-destructive test. It is the most accurate instrument available, extremely fast and stable and packaged in a robust, waterproof housing designed to operate in a demanding site environment.

The Measurement Principle

Operating on the principle of the Wenner probe, the Resipod is designed to measure the electrical resistivity of concrete or rock.

A current is applied to the two outer probes and the potential difference is measured between the two inner probes. The current is carried by ions in the pore liquid. The calculated resistivity depends on the spacing of the probes.

Resistivity ρ = 2πaV/l [kΩcm]

Resipod Models and Probe Spacing


	A wider probe spacing provides a more consistent reading when measuring on an inhomogeneous material like concrete. However, if the spacing is too wide, there is more danger of the measurement being affected by the reinforcement steel. The industry standard 50 mm probe spacing has long been seen as a good compromise.

The 38mm (1.5”) model is designed specifically to comply with the AASHTO standard (under development) for “Surface Resistivity Indication of Concrete’s Ability to Resist Chloride Ion Penetration”. The Surface Resistivity (SR) test is a much quicker and easier test for estimating concrete permeability. It is a proven and mature test method which can replace the more laborious rapid chloride permeability test.

Unique Features:

Fully integrated surface resistivity instrument
Wide measuring range (0 to ca. 1000 kΩcm)
Fast and accurate delivery of measuring results
Highest resolution available for a surface resistivity instrument
Meets the AASHTO standard (38mm, 1.5” probe spacing) (standard under development)
Current flow indication and poor contact indication

Hold, save and delete function, with onboard memory
USB connection and dedicated PC software
Designed to float (waterproof according to IPX7
Allows variable probe spacing to be set
Allows replacement of standard tips with accessories

Indication of Poor Connection

A good connection between the instrument and the concrete surface is the most important factor for obtaining a reliable measurement. Resipod automatically detects a poor connection and alerts the user.


	No contact inner probes	overflow	"open line" indication

ResipodLink Software

The collected measurement values can be analyzed comfortably with the Resipod Link PC tool.

System requirements: Windows XP, Windows Vista, Windows 7, USB-Connector. An internet connection is necessary for software and firmware (using PqUpgrade) updates if available.

ResipodLink Software

Technical Data
Range:	0 - ca. 1000 kΩcm (depending on probe spacing)
Resolution: (nominal current 200μA)	±0.2 kΩcm or ±1% (whichever is greater)
Resolution: (nominal current 50μA)	±0.3 kΩcm or ±2% (whichever is greater)
Resolution: (nominal current <50μA)	±2 kΩcm or ±5% (whichever is greater)
Frequency:	40 Hz
Memory:	Non volatile, ca. 500 measured values
Power Supply:	>50 hours autonomy
Charger Connection:	USB type B, (5V, 100mA)
Dimensions:	7.8 x 2.1 x 2.7 inch (197 x 53 x 69.7 mm)
Weight:	11.2 oz (318 g)
Operating Temperature:	32° to 122°F (0° to 50°C)
Storage Temperature:	14° to 158°F (-10° to 70°C)

	CD-831003 - 50mm

Resipod 50mm probe spacing Test strip Foam contact pads Charger with USB-cable	Software Carrying strap Documentation Case

	CD-831015 - 38mm

Resipod 38mm (1.5”) probe spacing Test strip Foam contact pads Charger with USB-cable	Software Carrying strap Documentation Case

Available Items -

Literature

Prices subject to change

Prices listed in US dollars for domestic shipments within US, Canada, & Mexico only

Export orders require quotations - click here for a quote

For more info call us 1-800-762-2478 or 954-946-9454.

Item Number	Item	Prices
CD-831003	Resipod, 50mm probe spacing	$2,800.00
CD-831015	Resipod, 38mm (1.5”) probe spacing	2,800.00
Accessories
CD-831023	Extension cable set	475.00
CD-831025	Set of replacement foam contact pads (20 pieces)	87.00
CD-831027	Test strip	40.00
CD-831033	USB cover	42.00
CD-831035	Carrying strap	12.00
CD-831037	USB charger, global	54.00
CD-831039	USB cable, 1.8 m long	18.00
CD-831043	Inner contact cap	30.00
CD-831045	Outer contact cap	30.00
CD-831047	Contact complete	42.00
CD-831049	Contact spring	7.00
CD-831053	Resipod 1-year extended warranty	280.00
CD-831055	Resipod 2-year extended warranty	560.00
CD-831057	Resipod 3-year extended warranty	840.00

Warranty Information

Standard Warranty:
• Electronic portion of the instrument: 24 months
• Mechanical portion of the instrument: 6 months
• Wear and tear in case of a defect condition, the buyer can return the item for evaluation within 30
days of shipment to the buyer

Extended Warranty:
An extended warranty for 1, 2 or 3 years for the Resipod can be purchased at the time of order or within 90 days thereafter.

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Paul N. Gardner Company, Inc. • 1.800.762.2478 • Fax 954.946.9309