1
CSM_ES1B_DS_E_3_1
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.
Refer to Safety Precautions for All Temperature
Controllers.
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
DC
power
supply
ES1B
ES1B
ES1B
ES1B
Power supply (+)
Power supply (−)
Power supply (+)
Power supply (−)
Output (+)
Output (+)
Output (−)
Output (−)
DC power
supply
DC power
supply
Temperature
Controller
Temperature
Controller
DC power
supply
Power
supply (+)
Power
supply (−)
Output (+)
Output (+)
Output (−)
Output (−)
Note: 1. Either a 12 VDC or 24 VDC power supply
is required for the ES1B.
2. To measure the difference in temperature
between two points, use two isolated
power supplies.
Do not use the Infrared Thermosensor in locations where the ambient temperature changes rapidly.
To use the Infrared Thermosensor in locations subject to rapid changes in temperature due to
radiant heat or movement of hot air, use a heat shield or other method to reduce rapid changes in
temperature as much as possible.
ES1B
2
Specifications
■Ratings/Characteristics
Note: 1. Based on characteristics of K-type thermocouple and radiation rate of 0.98.
2. The accuracy is given as the change in temperature from any reference temperature of the sensing object. For example, if the reference
temperature is 50°C, the accuracy at 55°C would be ±2% PV or ±2°C, whichever is larger and the accuracy at 60°C would be ±4% PV
or ±4°C, whichever is larger.
Dimensions
Note: All units are in millimeters unless otherwise indicated.
Adjustment Methods
Adjust the Thermosensor as described below before using it.
Adjust the Thermosensor according to the conditions of the sensing object and characteristics of the
Temperature Controller.
Offset Compensation for Target Value with Input Shift Function
Item ES1B
Power supply voltage 12/24 VDC
Operating voltage range 90% to 110% of the power supply voltage
Current consumption 20 mA max.
Measuring temperature range 10 to 70°C, 60 to 120°C, 115 to 165°C, 140 to 260°C
Accuracy
(See note 1.)
±5°C (See note 2.) ±2% PV or ±2°C, whichever is larger
±10°C (See note 2.) ±4% PV or ±4°C, whichever is larger
±30°C (See note 2.) ±6% PV or ±6°C, whichever is larger
±40°C (See note 2.) ±8% PV or ±8°C, whichever is larger
Reproducibility ±1% PV or ±1°C, whichever is larger
Temperature drift 0.4°C/°C max.
Sensing distance vs. sensing diameter 1:1 typ.
Measurement wavelength 6.5 to 14.0 μm
Receiver element Thermopile
Response speed Approximately 300 ms at response rate of 63%
Output impedance 1 to 4 kΩ
Operating temperature −25°C to 70°C (with no icing or condensation)
Allowable ambient humidity 35% to 85%
Vibration resistance (destruction) 98 m/s2 for 2 hours each in X, Y, and Z directions at 10 to 55 Hz
Shock resistance (destruction) 300 m/s2 for 3 times each in X, Y, and Z directions
Casing material ABS resin
Degree of protection IP65
Weight Approx. 120 g
Cable Compensating conductor: 3 m
PVC-covered cable with a shield wire resisting 70°C
Mounting Lock Nuts (Two) (Provided)
17.814.2 dia.
36.5
15
6.5
44.5 3,000
ABS resin
PVC-covered
(−25°C to 70°C)
Polyolefin tube
Screw M18×1.0 7
26
24
Green, Output +
White, Output −
Orange, Power +
Shield, Power −
ES1B
ES1B
3
Gain and Offset Compensation with Two-point Shift Function
Connections
Safety Precautions
Refer to the ES1B Infrared Thermosensor datasheet (Cat. No. H127) for application precautions.
Temperature Controller
(such as E5CS)
The error caused at the
time the Thermosensor is
connected to the
Temperature Controller.
Compensated with the
input shift function of
the Temperature
Controller
Target value
(Actual temperature of sensing object sample)
PV display of
Temperature
Controller
Temperature
characteristics of
target sensing
object
Temperature Controller
(such as E5@N or E5@K)
The error caused by
the condition of the
sensing objects or at
the time the Thermosensor is
connected to the
Temperature Controller.
Compensated with the
two-point shift function
(for the upper and
lower sides) of the
Temperature
Controller.
PV display of
Temperature
Controller
Upper limit of
SV of
Temperature
Controller
Lower limit of SV of
Temperature Controller Target value
(Actual temperature of sensing object sample)
Upper limit side
Lower limit side
Temperature Controller
Green, Output +
White, Output −
+
-
Thermocouple
(K)
input terminals
DC power supply
Orange, Power +
Shield, Power −
12/24 VDC
GND
In the interest of product improvement, specifications are subject to change without notice.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
