ANALOG GAGING PROBES
GP911 Series
U Spring- or Pneumatic-
Actuated Models
U Exceptional Linearity
Across Full Range
U Stainless Steel Body
U NEMA 12 (IP65)
Environmental
Rating
shown approximately
GP911-5-P,
2.5x actual size.
The GP911 Series analog gaging probes use
proven LVDT technology to provide excellent
linearity and repeatability in a compact, reliable
unit. All analog probe heads carry a NEMA 12
(IP65) environmental rating that makes them
suitable for use in harsh industrial environments.
In an analog gage probe, 2 small transformers
share a common magnetic core. As the core
moves, the output of one transformer increases
and that of the other decreases. The out-ofbalance current provides the measure of the core’s
position. LVDTs operate on an AC energizing
voltage and require special signal conditioning.
GP911-2.5-P,
shown actual size.
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ANALOG GAGING PROBES
3.5
(0.14)
Ø8h6 (0.315)
31.0
(1.22)
C
A
D
3.5
(0.14)
Ø8h6 (0.315)
31.0
(1.22)
C
A
D
Ø8h6 (0.315)
34.5
(1.36) at null
22.5
(0.86)
1.5
(0.060)
radius tip
7.45 (0.29) fully extended
5.95 (0.23) fully retracted
6.80 (0.27) at null
B1 (fully extended)
B2 (fully retracted)
B3 (at null)
SPRING ACTUATED Dimensions: mm (inch)
MODEL GP911-1-S GP911-2.5-S GP911-5-S
A 46.0 72.5 91
(1.8) (2.8) (3.6)
B1 14.15 17.65 25.65
(0.56) (0.70) (1.01)
B2 11.65 11.65 14.65
(0.46) (0.46) (0.58)
B3 12.65 14.75 20.25
(0.50) (0.58) (0.80)
C 3.5 4.0 4.0
(0.14) (0.16) (0.16)
D 42.5 68.5 87.0
(1.67) (2.70) (3.43)
GP911-S Series
SPRING ACTUATED
3.5
(0.14)
34.5
(1.36) at null
22.5
(0.86)
1.5
(0.060)
radius tip
Ø8h6 (0.315)
3.5
(0.14)
PNEUMATICALLY ACTUATED Dimensions: mm (inch)
MODEL GP911-1-P GP911-2.5-P GP911-5-P
A 51.0 73.0 98.0
(2.01) (2.88) (3.86)
B1 14.05 17.55 25.55
(0.55) (0.69) (1.01)
B2 11.05 11.55 14.55
(0.44) (0.45) (0.57)
B3 12.75 14.75 20.25
(0.50) (0.58) (0.80)
31.0
(1.22)
Dimensions: mm (inch)
A
D
C
ø = diameter
DISPLACEMENT
Ø8h6 (0.315)
J
7.45 (0.29) fully extended
5.95 (0.23) fully retracted
6.80 (0.27) at null
GP911-P Series
PNEUMATICALLY
ACTUATED
3.5
(0.14)
Replaceable tip: M2.5 thread
SPECIFICATIONS
Excitation Voltage: 1 to 10 Vrms
Excitation Frequency: 2 to 20 kHz
Linearity: 0.5% rdg or 0.1% FS,
whichever is greater
Repeatability: 0.15 microns
Calibration Voltage: 3 Vrms
Calibration Frequency: 5 kHz
Calibration Load: 10 kΩ
Storage Temp: -40 to 100°C
(-40 to 212°F)
Operating Temp: -10 to 80°C
(14 to 176°F)
Temp Coefficient: 0.01% FS/°C
(0.03% for 0.5 mm model)
3.0
(0.12)
B1 (fully extended)
B2 (fully retracted)
B3 (at null)
8.0
(0.31)
Ø8h6 (0.315)
4.5
(0.18)
A
B1 (fully extended)
B2 (fully retracted)
Ø8h6 (0.315)
B3 (at null)
To Order Visit omega.com/gp911 for Pricing and Details
MODEL NO. RANGE: mm (inch) ACTUATION
GP911-0.5-S ±0.5 (0.02) Spring loaded
GP911-1-S ±1 (0.04) Spring loaded
GP911-2.5-S ±2.5 (0.10) Spring loaded
GP911-5-S ±5 (0.20) Spring loaded
GP911-1-P ±1 (0.04) Pneumatic
GP911-2.5-P ±2.5 (0.10) Pneumatic
GP911-5-P ±5 (0.20) Pneumatic
Comes complete with operator’s manual.
Ordering Example: GP911-5-S, spring-loaded analog gaging probe with ±5 mm (0.20") stroke.
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