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Ø3-1/4 [Ø82.55] OR
[Ø6.35]
SERIES BTO
BIMETAL THERMOMETER WITH TRANSMITTER OUTPUT
Bimetal Stem with 4-20 mA Output, 3˝ or 5˝ Dial
TEMPERATURE
3-5/16
[84.14]
7-1/8
[180.98]
Ø5-1/4 [Ø133.35]
Ø3-1/16
[Ø77.79]
2-15/16
[71.61]
The Series BTO Bimetal Thermometer with Transmitter Output eliminates the
need for a separate thermometer and transmitter.
BENEFITS/FEATURES
• Thermometer and transmitter in one device
• Weatherproof construction
APPLICATIONS
• Boilers
• Compressors
• Thermal oxidizers
MODEL CHART
Model Dial Size Stem Length Range Model Dial Size Stem Length Range
BTO32551
BTO32571
BTO34051
BTO34071
BTO36051
BTO36071
BTO39051
BTO39071
BTO31251
BTO31271
Note: -40 to 160°F, 0 to 200°F, 50 to 300°F, and 50 to 400°F ranges available, contact factory for more information.
Thermometers
3˝
3˝
3˝
3˝
3˝
3˝
3˝
3˝
3˝
3˝
2.5˝
2.5˝
4˝
4˝
6˝
6˝
9˝
9˝
12˝
12˝
0 to 250°F
50 to 550°F
0 to 250°F
50 to 550°F
0 to 250°F
50 to 550°F
0 to 250°F
50 to 550°F
0 to 250°F
50 to 550°F
BTO52551
BTO52571
BTO54051
BTO54071
BTO56051
BTO56071
BTO59051
BTO59071
BTO51251
BTO51271
5˝
5˝
5˝
5˝
5˝
5˝
5˝
5˝
5˝
5˝
SPECIFICATIONS
THERMOMETER SPECIFICATIONS
Wetted Materials: 304 SS.
Housing Material: 304 SS.
Lens: Glass.
Accuracy: ±1% FS.
Temperature Limits: Ambient: -58 to
185°F (-50 to 85°C).
Dial Size: 3˝ or 5˝.
Process Connection: 1/2˝ NPT.
Resolution: 2°F (5°F for 400°F and
550°F models).
Weight: 1.95 lb.
2.5˝
2.5˝
4˝
4˝
6˝
6˝
9˝
9˝
12˝
12˝
USA: California Proposition 65
WARNING: This product can expose you to chemicals including Lead, which is known to the State
of California to cause cancer and birth defects or other reproductive harm. For more information go
to www.P65Warnings.ca.gov.
0 to 250°F
50 to 550°F
0 to 250°F
50 to 550°F
0 to 250°F
50 to 550°F
0 to 250°F
50 to 550°F
0 to 250°F
50 to 550°F
STEM
LENGTH
1/2
NPT
3/4 NPT
CONDUIT
CONNECTION
3-3/16
[80.96]
Ø1/4
TRANSMITTER SPECIFICATIONS
Temperature Limits: Ambient: -58 to
185°F (-50 to 85°C).
Power Requirement: 10-33 VDC.
Output Signal: 4-20 mA.
Loop Resistance: 1045 Ω.
Power Consumption: 38 mA.
Enclosure Rating: NEMA 4X (IP66).
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