• Hand held unit with screen display
• Lightweight k9 probe with keypad
• Auto rebar diameter determination
• Depth displayed in high/low range
• Accurate discrimination of close bars
• Audio and visual bar location aids
• Quick scanning facility to preset depth
• Data logging to spreadsheet
• Signal strength and led indicators
• Soft key user programmable
• Carry case, harness and charger
• IP65 rated. Earpiece. Screen back-light
• Instructions and software

Bar Sizing Accuracy: ± 0.5mm to ± 1.5 mm

Dependent on bar size and cover depth and the closeness of other bars. Error codes indicate to the user if there is too much or too little cover for a bar size to be estimated. Otherwise the bar size is indicated and the current bar size used by the CN941 is updated automatically, resulting in greater depth indication accuracy.

Bar Sizing Resolution: 0.1 mm

The minimum depths of between 8-22 mm of cover, which are dependent on the bar size, can be overcome by the introduction of any spacer when the bar is too close to the surface.

Typically a 6mm bar can be sized down to 60mm of cover
and a 40mm bar can be sized down to 80mm of cover.

Cover Depth Measurement Range

From 5 to 185mm dependent on bar size. Readings closer to zero can be achieved by insertion of spacer of known thickness to increase distance of probe from target.

Cover Depth Accuracy: to 1mm

Examples of Accuracy

• ±1mm up to 60mmcover
• ±2mm up to 120mm
• ±3mm up to 160mm
• ±4mm over 160mm

Better than BS1881 part 204 over full range of Instrument

Bar Resolution:

Dependent on bar size and cover. Some examples are shown here.

Bar Diameter	Cover	Minimum Spacing
16mm	60mm	70mm
16mm	100mm	110mm
25mm	130mm	150mm

Data Logging Capability

The logging capacity is 10000 bits of information comprising:

• Cover measurement
• Bar size
• Date
• Time
• Log Number

The PC application communicates with the 8020 via a serial port and enables the downloading directly into a Microsoft Excel spreadsheet format (*.csv file). This will include the facility to download a selected range of logged data points such that only the required data is transferred to the spreadsheet. This program is simple to install and has been tested on Windows 2000, ME and XP.

 

  Click to view a PDF file of the User Guide