Models; Models 4200 And 4200L; Figure 2 - Model 4200 And 4200L Vibrating Wire Strain Gage; Table 1 - Heat Shrink Color Designations - Geokon 4200 Series Instruction Manual

2

2. MODELS

Geokon vibrating wire strain gages come in a variety of models. The following sections describe
in brief the various embedment strain gages available from Geokon.

2.1 Models 4200 and 4200L

Geokon Models 4200 and 4200L are designed primarily for long-term strain measurements
inside mass concrete, in structures such as foundations, piles, bridges, dams, containment
vessels, tunnel liners, etc. The 4200L is a low modulus version designed to enable early curing
strains to be measured. The length of the 4200 gage is six inches (152 mm).
The various 4200 strain gage models are easily identifiable by the color of heat shrink which
covers the protective tubes, as show in Table 1.
*Applicable only to products manufactured after September 2016.

Figure 2 - Model 4200 and 4200L Vibrating Wire Strain Gage

Model
4200
4200L
µε
4200-5,000
µε
4200-10,000
4200X

Table 1 - Heat Shrink Color Designations

*
Heat Shrink Color
Blue
Black
Red
Green
Yellow (Dependent on the
reason for the X designation.)