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| Portable Resistivity Meter |
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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. |
Features
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- 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
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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 and Correlation to water permeability of rock |
Technical Data
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| 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) |
The Measurement Principle
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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
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| 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. |
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| 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. |
Indication of Poor Connection
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| 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. |
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No contact inner probes |
overflow |
"open line" indication |
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ResipodLink Software
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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. |
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Resipod Surface Resistivity (SR) Method
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In 2011 the American Association of State Highway and Transportation Officials (AASHTO) became
the first standards body to define permeability classes based on reisistivity measurements (TP95-11
Standard Method of Test for Surface Resistivity Indication of Concrete's Ability to Resist Chloride Ion
Penetration).
Since that time this test has established itself as a simple, economical alternative to the ASTM C 1202
Rapid Chloride Permeability test with several clear advantages: |
- Much faster to perform
- No sample preparation necessary
- Test can be repeated at different ages e.g. 38 days, 56 days
- The sample cylinder can be used for compressive strength testing
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Resipod with 1.5" (38mm) probe spacing is fully compliantwith the above mentioned standard |
Application Overview
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| Application Overview |
| Application |
Resipod |
Resipod Geometric |
Resipod Bulk Resistivity |
| Surface resistivity test on standard cylinders (4" x 8", 100 x 200mm or 6" x 12", 150 x 300mm) with a maximum aggregate size of 1.5", 38mm Fixed probe spacing (1.5", 38mm) |
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| Bulk resistivity test on cylinders up to 100mm (4") diameter |
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| Surface resistivity test on non-standard cylinders with aggregate sizes that may exceed >1.5", 38mm |
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| Correction factor for probe spacing |
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| Correction factor for sample geometry |
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| User definable correction factor |
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| Variable probe spacing |
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| Surface resistivity mapping on site for: estimation of likelihood of corrosion, corrosion rate and implementation of cathodic protection systems |
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Resipod Geometric (SR) Method
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The AASHTO TP-95-11 standard is limited to particular
sample geometries and a maximum aggregate size of 1.5",
38mm. Resipod Geometric is designed to comply with the
latest research intended to extend the current limits of this
AASHTO standard.
Resipod Geometric is supplied with a variable spacing probe
that can accommodate larger aggregate sizes. It also allows
the user to enter geometric correction factors via the
ResipodLink software to give the correct resistivity reading
directly on the instrument. |
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Resipod Bulk Resistivity (BR) Method
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The Bulk Resistivity test is an alternative method
where the sample resistivity is measured between
electrical plates placed at either end of the
sample. The geometry factor is very simple and
the test is rapid to perform, with similar advantages
as the surface resistivity test.
The Resipod Bulk Resistivity kit provides everything
necessary for carrying out this test on standard
4", 100mm diameter cylinders. |
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Warranty Information
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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
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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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Prices
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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. |
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| Item Number |
Item |
Prices |
| Resipod |
50mm Probe Spacing - Resipod, 50mm probe spacing, test strip, foam contact pads, charger with USB-cable, software, carrying strap, documentation and case
38mm Probe Spacing - Resipod, 38mm (1.5") probe spacing, test strip, foam contact pads, charger with USB-cable, software, carrying strap, documentation and case |
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| CD-831003 |
Resipod, 50mm probe spacing |
$3,335.00 |
| CD-831015 |
Resipod, 38mm probe spacing |
3,335.00 |
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| Resipod Bulk |
50mm Probe Spacing - Resipod Bulk, bulk accessory, 50mm probe spacing, test strip, foam contact pads, charger with USB-cable, software, carrying strap, documentation and case
38mm Probe Spacing - Resipod Bulk, bulk accessory, 38mm (1.5") probe spacing, test strip, foam contact pads, charger with USB-cable, software, carrying strap, documentation and case |
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| CD-831005 |
Resipod Bulk, 50mm probe spacing |
4,405.00 |
| CD-831007 |
Resipod Bulk, 38mm probe spacing |
4,405.00 |
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| Resipod Geometric |
50mm Probe Spacing - Resipod Geometric, geometric accessory, 50mm probe spacing, test strip, foam contact pads, charger with USB-cable, software, carrying strap, documentation and case
38mm Probe Spacing - Resipod Geometric, geometric accessory, 38mm (1.5") probe spacing, test strip, foam contact pads, charger with USB-cable, software, carrying strap, documentation and case |
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| CD-831009 |
Resipod Geometric, 50mm probe spacing |
5,060.00 |
| CD-831011 |
Resipod Geometric, 38mm probe spacing |
5,060.00 |
| Accessories |
| CD-831016 |
Bulk Resistivity Accessory |
1,070.00 |
| CD-831017 |
Resipod Geometric Accessory |
1,740.00 |
| CD-831019 |
Variable spacing probe with extension cable set |
1,370.00 |
| CD-831021 |
Resipod stand |
363.00 |
| CD-831025 |
Set of replacement foam contact pads (20 pieces) |
121.00 |
| CD-831026 |
Bulk resistivity contact pad (10 pieces) |
29.00 |
| CD-831027 |
Test strip |
48.00 |
| CD-831033 |
USB cover |
53.00 |
| CD-831037 |
USB charger, global |
76.00 |
| CD-831039 |
USB cable, 1.8 m long |
22.00 |
| CD-831041 |
Key for USB port |
54.00 |
| CD-831043 |
Inner contact cap |
42.00 |
| CD-831045 |
Outer contact cap |
42.00 |
| CD-831049 |
Contact spring |
12.00 |
| CD-831053 |
Resipod 1-year extended warranty |
340.00 |
| CD-831055 |
Resipod 2-year extended warranty |
639.00 |
| CD-831057 |
Resipod 3-year extended warranty |
938.00 |
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