TEMPERATURE
2500
50 200
100 150
°F
-20
0
20
40
60
80
100
120
°C
STEM
LENGTH
HEAD SIZE
STEM
LENGTH
1/2 NPT
1/2 NPT
1/2 NPT
STEM LENGTH
1/2 NPT
Ø5-9/32
[Ø134.14]
DIAL
SIZE
1
[25.4]
13/16
[20.64]
Series
GBT
Glow-in-the-Dark Bimetal Thermometer
Scale Background Glows, Scratch-Resistant Glass Lens
Thermometers,
The Series GBT Glow-in-the-Dark Bimetal Thermometer offers accurate and
reliable measurements, even in dimly-lit areas. The bimetal element directly drives the
pointer, eliminating gears and linkages. The scale background glows brightly when
Dial
mounted in dark areas for ease of reading. The glass lens can easily be cleaned and resists
scratches for better viewing of the scale. Series GBT thermometers can be ordered in
various stem lengths, connections, and ranges to fit most applications.
Model
GBTB525151
GBTB525161
GBTB52571
GBTB540151
GBTB540161
GBTB54071
GBTB560151
GBTB560161
GBTB56071
GBTB590151
GBTB590161
GBTB59071
*Dual scale units available by changing last digit to D. (Example: GBTB5255D)
234
Dial Size
5˝
5˝
5˝
5˝
5˝
5˝
5˝
5˝
5˝
5˝
5˝
5˝
DWYER INSTRUMENTS, INC.
Connection
Back
Back
Back
Back
Back
Back
Back
Back
Back
Back
Back
Back
Range*
0 to 300°F
0 to 500°F
50 to 550°F
0 to 300°F
0 to 500°F
50 to 550°F
0 to 300°F
0 to 500°F
50 to 550°F
0 to 300°F
0 to 500°F
50 to 550°F
Stem
2-1/2˝
2-1/2˝
2-1/2˝
4˝
4˝
4˝
6˝
6˝
6˝
9˝
9˝
9˝
Model
GBTA525151
GBTA525161
GBTA52571
GBTA540151
GBTA540161
GBTA54071
GBTA560151
GBTA560161
GBTA56071
GBTA590151
GBTA590161
GBTA59071
Dial Size
5˝
5˝
5˝
5˝
5˝
5˝
5˝
5˝
5˝
5˝
5˝
5˝
Back Connection
Adjustable Angle
SPECIFICATIONS
Wetted Materials: 304 SS.
Housing Material: Series 300 SS.
Lens: Glass.
Accuracy: ±1%.
Temperature Limits: Ambient: -40 to 392°F (-40 to 200°C).
Dial Size: 5˝.
Process Connection: 1/2˝ NPT.
Resolution: 2°.
Weight: 12.7 oz (360 g).
Connection
Adjustable
Adjustable
Adjustable
Adjustable
Adjustable
Adjustable
Adjustable
Adjustable
Adjustable
Adjustable
Adjustable
Adjustable
Range*
0 to 300°F
0 to 500°F
50 to 550°F
0 to 300°F
0 to 500°F
50 to 550°F
0 to 300°F
0 to 500°F
50 to 550°F
0 to 300°F
0 to 500°F
50 to 550°F
Stem
2-1/2˝
2-1/2˝
2-1/2˝
4˝
4˝
4˝
6˝
6˝
6˝
9˝
9˝
9˝
Connection