Greenlee BLL-200 Manuel D'instructions page 18

Frequently Asked Questions (cont'd)
Q: What is the best way to trace a wire in a concrete slab?
A: If possible, connect to a live line. In any case, be sure to use direct connection and the
best possible ground connection. In Passive Mode, rebar (reinforcement bar) and other
pipes are likely to be picked up by the receiver. The Passive Mode is not recommended for
tracing individual lines through a concrete slab.
Specifications
Indoor/Outdoor Use: This tool is not to be used in the rain or exposed to direct sunlight for
extended periods of time.
Transmitter
Power Supply: Four 1.5 V batteries (AA)
Line Voltage: 0 VAC to 600 VAC, 0 VDC to 300 VDC
Current: 13 mA (open line) to 150 mA (live or short circuited line)
Maximum Coupled Power: 250 mW
Frequency: 33.3 kHz
Operating Temperature: –17 °C to 60 °C (0 °F to 140 °F)
Relative Humidity: 0% to 80% (noncondensing)
Altitude: 2000 m (6500') maximum
Pollution Degree: 2
Overvoltage Category: Category III, 600 VAC/300 VDC
Receiver
Power Supply: Four 1.5 V batteries (AA)
Depth Measurement: 0.1' to 15.0'
Accuracy of Depth Measurement: 10% + 0.2'
Trace Accuracy: + 1" per foot of depth
Passive Mode Frequency Band: 12 Hz to 24 kHz
Trace Mode Frequency: 33.3 kHz
Operating Temperature: –17 °C to 40 °C (0 °F to 104 °F)
Relative Humidity: 0% to 70% (noncondensing)
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