26 Infrared Thermosensor ES1B
Infrared Thermosensor
ES1B
Achieve Low-cost Measurements with an 
Infrared Thermosensor.
• The ES1B has an electromotive output as high as that of a 
thermocouple, thus connecting directly to the thermocouple input 
terminal of the Temperature Controller is possible.
• Four temperature ranges are available to cover a wide range of 
temperature measurement needs, including those in the food 
processing, packaging, molding, and electronics industries.
• High-accuracy temperature measurement is ensured by a high-
speed response of 300 ms (for a 63% response) and an indication 
reproducibility of ±1% PV.
• Unlike thermocouples, the Thermosensor does not deteriorate. 
Therefore, stable, real-time temperature control can be maintained.
Ordering Information
■ List of Models
Application Examples
Appearance and sensing characteristic Specification (temperature range) Model
10 to 70
°CES1B
60 to 120
°C
115 to 165
°C
140 to 260
°C
2 dia. 20 dia.
2 mm 20 mm 40 mm 60 mm
40 dia. 60 dia.
ES1B
Film
Vertically  
heating rolls
Horizontally  
heating rolls
Temperature Control of Ironing Portion
Temperature Measurement of Sheet Molding  
Machines and Resin Extrusion Machines
Detecting Excessive Heat Radiation  
of Bearings
ES1B
High-tension line
High-tension
distribution  
panel
Detecting Excessive Heat Radiation of  
High-tension Distribution Boards or Transformers
ES1B
Molding trays
Conveyor
Resin
ES1B
Bearing
DC 
power
supply
(See 
 note.)
 
DC 
power
supply
(See note.)
Tempe-
rature 
Controller
DC power
supply
Power supply (+)
Power supply (−)
DC power
supply
Power supply (+)
Power supply (−)
Output (+)
Output (+)
ES1B
ES1B
Output (−)
Output (−)
Tempe-
rature 
Controller
DC power
supply
Power 
supply (+)
Power supply
 (−)
Output (+)
Output (+)
ES1B
ES1B
Output (−)
Output (−)
Note: 1. Either a 12 VDC or 24 VDC power sup-
ply is required for the ES1B. 
2. The ES1B cannot be used with 
OMRON’s E5ZE Multipoint Tempera-
ture Controller. (It can be used with the
E5ZN, E5AR, and E5ER.)
Note: A DC power supply is not required when using a E5CN
model with an external power supply for the ES1B.