Measurement (U.S. Customary Units)
Direct Transmission (6")
15 sec
1 min
4 min
Precision
±0.32 pcf
±0.15 pcf
±0.08 pcf
Composition error
±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
15 sec
1 min
4 min
Precision
±1.0 pcf
±0.50 pcf
±0.25 pcf
Composition error
±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
±0.69 pcf
±0.34 pcf
±0.17 pcf

Surface error (0.05", 100% Void)
Depth of measurement = 8.5"

-1.2 pcf
-1.2 pcf
-1.2 pcf
Measurement (S.I. Units)
Direct Transmission (150mm)
15 sec
1 min
4 min
Precision
±5.2 kg/m3
±2.6 kg/m3
±1.3 kg/m3
Composition error
±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
15 sec
1 min
4 min
Precision
±16.0 kg/m3
±8.0 kg/m3
±4.0 kg/m3
Composition error
±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
±11.0 kg/m3
±5.5 kg/m3
±2.8 kg/m3

Surface error (1.25mm, 100% Void)
Measurement Depth = 215mm

-19.0 kg/m3
-19.0 kg/m3
-19.0 kg/m3
Thin Overlay Mode
Precision at 2240 kg/m3 (140 pcf)
Time (min.) 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
Time (min.) Thickness kg/m3 pcf
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, single or double encapsulated
Shipping Case
Type A, Yellow II, TI = 0.6
Electrical
Stored Power 5 watt-hours
Time before automatic shutdown 5 hours of complete inactivity
Power Source(s) 5 "C" cell nickel metal hydride rechargeable batteries
Charge Source 110/220 V ac, 50-60 Hz or 10-14 V dc
Battery Recharge Time 2.5 hours maximum, automatic cutoff
Readout Provided by means of the PDA device
Keypad Provided by means of the PDA device
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.)

Shipping Case Size 782 H x 353 L x 455 W mm
(30.8 H x 13.9 L x 17.9 W in.)
Weight 16 Kgm (35.3 lbs.)
Shipping Weight 42.5 Kgm (94.0 lbs.)
Operating Temperature Ambient 0 to 70ºC (32 to 158ºF)
Max Test Material Surface Temperature 175ºC (347ºF), for 15 minutes
Storage Temperature -55 to 85ºC (-67 to 185ºF)
Humidity 98%, noncondensing
Products» Field Equipment» Surface Gauges»
Model 3451: Specifications

Model 3451 Specifications