3450 Surface Moisture-Density Gauge

Product Features

 

It is the most versatile moisture/density gauge ever produced. The RoadReader Plus combines the measurement modes proven in thousands of Troxler 3400 series gauges with a patented method for true thin layer asphalt and concrete bridge deck overlay density measurement.

By combining thin layer and full depth measuring capabilities in one instrument, the RoadReader Plus is our flagship gauge in the 3400 series. With its versatility, speed, and economy the RoadReader Plus is designed to satisfy your compaction control needs at every stage of your project.

Like all 3400 series gauges, the Model 3450 meets ASTM Standard Test Methods D-6938 (replaced ASTM D-2922 and ASTM D-3017 as of November 2006), D-2950, C-1040 and AASHTO T-310.

No need for two different gauges

One instrument covers all density and moisture measurement needs

Measures thin-layer asphalt, full depth asphalt, soil and aggregates

Runs on quick charge NiCad batteries or alkaline batteries

"Sleep" mode allows the gauge to conserve power when not in use

Adjustable beeper can be heard over traffic and equipment

Stores up to 1,000 test results

Backlit display for night time use

An alphabetic keypad allows you to enter notes for each project

Over forty years of Troxler experience and an 18 month warranty give you the confidence you require for your field testing equipment

Specifications

Measurement (U.S. Customary Units)
Direct Transmission Density (6")
15 sec.
1 min.
4 min.
Precision at 120 pcf
±0.32 pcf
±0.15 pcf
±0.08 pcf
Composition error at 120 pcf
±0.50 pcf
±0.50 pcf
±0.50 pcf
Surface error (0.05", 100% Void)
-1.1 pcf
-1.1 pcf
-1.1 pcf
 
 
 
Backscatter (98%) (4")
15 sec.
1 min.
4 min.
Precision at 120 pcf
±1.00 pcf
±0.50 pcf
±0.25 pcf
Composition error at 120 pcf
±0.87 pcf
±0.87 pcf
±0.87 pcf
Surface error (0.05", 100% Void)
-5.0 pcf
-5.0 pcf
-5.0 pcf
 
 
 
Moisture at 15 pcf
15 sec.
1 min.
4 min.
Precision at 15 pcf
±0.69 pcf
±0.34 pcf
±0.17 pcf

Surface error (0.05", 100% Void)
Depth of measurement @ 15 pcf (8.45")

-1.12 pcf
 
-1.12 pcf
 
-1.12 pcf
 
 
Measurement (S.I. Units)
Direct Transmission Density-150mm
15 sec.
1 min.
4 min.
Precision at 2000 kg/m3
±5.2 kg/m3 
±2.6 kg/m3
±1.3 kg/m3
Composition error at 2000 kg/m3 
±8.0 kg/m3 
±8.0 kg/m3
±8.0 kg/m3
Surface error (1.25mm, 100% Void) 
-18.0 kg/m3
-18.0 kg/m3
-18.0 kg/m3
 
 
 
Backscatter (98%) (100mm)
15 sec.
1 min.
4 min.
Precision at 2000 kg/m3
±16.0 kg/m3
±8.0 kg/m3
±4.0 kg/m3
Composition error at 2000 kg/m3
±14.0 kg/m3
±14.0 kg/m3
±14.0 kg/m3
Surface error (1.25mm, 100% Void)
-80.0 kg/m3
-80.0 kg/m3
-80.0 kg/m3
 
 
 
Moisture
15 sec.
1 min.
4 min.
Precision at 250 kg/m3
±11.0 kg/m3
±5.5 kg/m3
±2.8 kg/m3

Surface error (1.25mm, 100% Void) 
Meas. Depth @ 250 kg/m3 - 212.5mm

-19.0 kg/m3
 
-19.0 kg/m3
 
-19.0 kg/m3
 
 
Thin Overlay Mode
Precision at 2240 kg/m3 (140 pcf)      
Time (minutes)
Thickness
kg/m3
pcf
1
2.5 cm (1.0")
±16
±1.0
5.0 cm (2.0")
±10
±0.60
6.3 cm (2.5")
±8
±0.50
10.0 cm (4.0")
±8
±0.50
 
4
2.5 cm (1.0")
±8
±0.50
5.0 cm (2.0")
±5
±0.30
6.3 cm (2.5")
±4
±0.25
10.0 cm (4.0")
±4
±0.25
 
Radiological
Gamma Source 0.30 GBq (8 mCi) ±10% Cs-137
Neutron Source

1.48 GBq (40 mCi) ±10% Am-241:Be

Source Type Sealed Source - Special Form
Source Housing Stainless Steel Encapsulation (single or double)
Shipping Case Type A, Yellow II, TI =0.6
 
Electrical
Power Source(s) NiCad and AA Alkaline Batteries
Stored Power 33 watt-hours
Average Power Consumption

Idle Mode: 0.12 watts
Measurement Mode: 0.17 watts
Standby Mode: 0.06 watts
Backlight Mode: 0.6 watts

Default Time before Sleep Mode 30 seconds between key presses, no loss of data or previous status
Time before Automatic Shutdown

5 hours of complete inactivity

Battery Recharge Time 4 hours maximum, automatic shutoff
Charge Source 12 V dc Nominal, 800 MA minimum
Readout 4 x 20 alpha-numeric backlit LCD
Keypad 33 key sealed membrane
RAM 128 kbytes non-volatile
Serial Data Format 8 data bits, 2 stop bits, no parity
 
Mechanical
Gauge Height (with handles) 12" rod: 604 H x 411 L x 229 W mm 
(23.8 H x 16.2 L x 9.0 W in.)


8" rod: 503 H x 411 L x 229 W mm 
(19.8 H x 16.2 L x 9.0 W in.)
Case High Impact Plastic
785 H x 353 L x 455 W mm 
(30.8 H x 13.9 L x 17.9 W in.)
Weight 17 kg (37.5 lbs.)
Shipping Weight 43 kg (96 lbs)
Operating Temperature Ambient: 0 to 70°C (32 to 158°F)
Storage Temperature -55 to 85°C (-67 to 185°F)
Max Text Material Surface Temp. 175°C (347°F) for 15 minutes
Humidity

98%, non-condensing