Johnson Level 40-6790 User Manual

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Universal Laser Detector

Model No. 40-6790

Instruction Manual

The 40-6790 Universal Laser Detector is a versatile and durable dual use laser detector for the construction site. The 40-6790 Universal Laser Detector can be used as a machine mounted detector and a level rod mounted detector, designed for all brands of rotary lasers. Its 5” receiving photo cell and 240 degree reception area makes it perfect for use with a standard level rod or for use with backhoes, excavators, dozers, skid steers, and box blades. This unit comes complete with detector and rod bracket. Additionally, the 40-6790 includes built-in magnetic mounts for use with machines.

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Table of Contents

1. Kit Contents

2. Technical Specifications

3. Location of Parts/Components

4. Operating Instructions

1. Kit Contents

Description Model No. 40-6580 Qty.

Universal Laser Detector

“AA” Alkaline Batteries 4

Instruction Manual with Warranty Card 1

Hardshell Carrying Case 1

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2. Technical Specifications

Detecting Range: Up to 700’ (200m)

Detecting Accuracy: Fine: ± 5mm

Coarse: ± 12.5mm

Receiving Window: 5” (12 cm)

Receiving Angle: 240º

Power Supply: 4 “AA” Alkaline Batteries

Battery Life: 35 hrs. continuous use with LCD lighting off

Sound Indicator: slow short beep, rapid short beep and

LCD Indicator: Up arrow, Down arrow, On grade

LED Indicator: Up, Down, On grade

Includes: Level Rod Bracket

Dimensions: 6.69" x 4.52" x 1.65"

Weight: 1.5 lb. (0.680kg)

Working temperature: -20°C to 50°C (-4°F to +122°F)

Other functions: If laser signal is lost, the display will show

continuous sound

(170 x 115 x 42mm)

last signal recorded for 5 seconds

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