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 highspeed 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
Appearance and sensing characteristic
2 mm
20 mm
40 mm
Specification (temperature range)
10 to 70°C
60 mm
Model
ES1B
60 to 120°C
115 to 165°C
140 to 260°C
2 dia.
20 dia.
40 dia.
60 dia.
Application Examples
Temperature Control of Ironing Portion
Film
Temperature Measurement of Sheet Molding
Machines and Resin Extrusion Machines
DC
power
supply
Vertically
heating rolls
Resin
ES1B
Conveyor
ES1B
Horizontally
heating rolls
Molding trays
Detecting Excessive Heat Radiation of
High-tension Distribution Boards or Transformers
Detecting Excessive Heat Radiation
of Bearings
ES1B
ES1B
High-tension line
High-tension
distribution
panel
DC
power
supply
Bearing
Note: 1. Either a 12 VDC or 24 VDC power supply
is required for the ES1B.
2. The ES1B cannot be used with OMRON’s E5ZE Multipoint Temperature
Controller. (It can be used with the E5ZN,
E5AR, and E5ER.)
Infrared Thermosensor
ES1B
1
Specifications
■ Ratings/Characteristics
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
±5°C (See note 2.)
Accuracy
(See note 1.)
10 to 70°C, 60 to 120°C, 115 to 165°C, 140 to 260°C
±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 m m
Receiver element
Thermopile
Response speed
Approximately 300 ms at response rate of 63%
Output impedance
1 to 4 kW
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
Note: 1. Based on characteristics of K-type thermocouple and radiation rate of 0.9.
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.
Connections
Green, Output +
+
Thermocouple
(K)
- input terminals
White, Output −
Temperature Controller
Orange, Power +
12/24 VDC
Shield, Power −
GND
DC power supply
2
Infrared Thermosensor ES1B
Dimensions
Note: All units are in millimeters unless otherwise indicated.
ES1B
44.5
6.5
17.8
3,000
ABS resin
Polyolefin tube
Mounting Lock Nuts (Two) (Provided)
Green, Output +
White, Output −
14.2 dia.
15
36.5
PVC-covered
(−25°C to 70°C)
Screw M18×1.0
24
Orange, Power +
Shield, Power −
26
7
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
The error caused at the
time the Thermosensor is
connected to the
Temperature Controller.
PV display of
Temperature
Controller
Temperature
characteristics of
target sensing object
Compensated with the
input shift function of
the Temperature
Controller
Temperature Controller
(such as E5CS)
Target value
(Actual temperature of sensing object sample)
Gain and Offset Compensation with Two-point Shift Function
PV display of
Temperature
Controller
Upper limit of
SV of
Temperature
Controller
Temperature Controller
(such as E5@N or E5@K)
Lower limit side
The error caused by
the condition of the
sensing objects or at
the time the Thermosensor is
connected to the
Temperature Controller.
Upper limit side
Compensated with the
two-point shift function
(for the upper and
lower sides) of the
Temperature
Controller.
Lower limit of SV of
Temperature Controller
Target value
(Actual temperature of sensing object sample)
Infrared Thermosensor
ES1B
3
■ One-point Input Shift
■ Two-point Input Shift
Preparations
Use a two-point input shift to output more accurate display values
than is possible with a 1-point input shift.
• Set a temperature input range that is suitable for the input
specifications of the Infrared Thermosensor.
• Prepare a thermometer to measure the temperature of the sensing
object as shown in figure 1, below.
Configuration for Offsetting the Infrared
Thermosensor Input (Figure 1)
(C) Sensing
object
Preparations
Refer to the preparations for a one-point input shift.
1. The input value is shifted at two points: near room temperature
and near the set point. To do so, first check the temperature C of
the sensing object and the temperature A indicated on the
Controller at both near room temperature and near the set point.
2. Use the following formulas to calculate the upper-limit
temperature input and lower-limit temperature input settings
based on the values checked above.
Diagram of Two-point Input Shift
Temperature indicated
by Controller (A)
After offset
ES1B Infrared
Thermosensor
Upper limit of
set range, YH
(e.g., 260˚C)
−
+
Output
(+,−)
Indicated temp. after
offset, X2 (e.g., 110˚C)
(B) Thermometer
Power
Supply
Indicated temp. after
offset, Y1 (e.g., 40˚C)
Indicated temp. after
offset, X1 (e.g., 25˚C)
Lower-limit
temperature
input insl 0
Lower limit of
set range,
YL (e.g., 0˚C)
Example for the E5CN
C
insl
10
Lower-limit
temperature input
C
insh
10
insl=
Upper-limit
temperature input
Temperature indicated
by Controller (A)
4
Temperature
indicated by
thermometer (B)
YL-Y1
´{(X2-Y2)-(X1-Y1)}+(X1-Y1)
Y2-Y1
Upper-limit Temperature Input Setting
Diagram of One-point Input Shift
0
X1, Room temp. X2, Near set point
(e.g., 25˚C)
(e.g., 110˚C)
Lower-limit Temperature Input Setting
1. Adjust the temperature of the sensing object in the configuration
shown in figure 1 to near the set point. We will assume that the
temperature indicated on the thermometer is the actual
temperature of the sensing object.
2. Check the temperature C of the sensing object and the
temperature A indicated on the Controller and set both the upperlimit and lower-limit temperature input settings to the following
value:
Temperature C (sensing object) - Temperature A (Controller)
3. Check the temperature C of the sensing object and the
temperature A indicated on the Controller again. If they are about
the same, then setting the offset has been completed.
Indicated temperature
after offset
(e.g., 120˚C)
Indicated temperature
before offset
(e.g., 110˚C)
Before offset
Indicated temp. before
offset,Y2 (e.g., 105˚C)
Power supply
(+,−)
(A) Temperature
Controller
Upper-limit
temperature input insh
After offset
Input offset value
(e.g., 10˚C)
Before offset
Near set point Temperature
(e.g., 120˚C) indicated by
thermometer (B)
Infrared Thermosensor ES1B
insh=
YH-Y1
´{(X2-Y2)-(X1-Y1)}+(X1-Y1)
Y2-Y1
3. Set both the upper-limit and lower-limit temperature input settings
and then check the temperature C of the sensing object and the
temperature A indicated on the Controller both near room
temperature and near the set point.
4. Although here we have used two points, near room temperature
and near the set point, accuracy can be increased even further by
using another point within the measurement temperature range
other than the set value instead of room temperature.
Example for the E5CN
C
insl
-27
Lower-limit
temperature input
C
insh
53
Upper-limit
temperature input
In this example, the ES1B is used between 140 and 260°C. Here, the
set point lower limit, YL, would be 0°C and the set point upper limit,
YH, would be 260°C in formulas 1 and 2 . The temperatures of the
sensing object are checked next.
The offset values can be calculated as shown below when the
Controller display Y1 is 40°C for a room temperature X1 of 25°C and
when the Controller display Y2 is 105°C for a set point temperature
X2 of 110°C
Upper-limit Temperature Input Setting
insl=
0-40
´{(110-105)-(25-40)}+(25-40)
105-40
= -27.3 (°C)
Lower-limit Temperature Input Setting
insh=
260-40
´{(110-105)-(25-40)}+(25-40)
105-40
= 52.7 (°C)
Infrared Thermosensor
ES1B
5
Precautions
!CAUTION
If this product should malfunction and cease to provide
correct output, property damage may occur to the
equipment or device that is connected to it. To prevent
this, provide additional safety measures by also
connecting the equipment or devices to a separate alarm
system that will warn operators of temperature rises.
Precautions for Safe Use
1. Use the ES1B only within the ranges specified by its
specifications and ratings.
2. Be sure to correctly wire the input sensor leads to the proper
positive and negative terminals.
3. Do not use the product in the following locations:
• Locations subject to icing or condensation.
• Locations subject to excessive shocks or vibration.
• Locations subject to dust or corrosive gases.
• Locations subject to extreme temperature changes or direct
sunlight.
• Locations subject to water splashing or oil contact.
Precautions for Correct Use
1. The thermocouple output and power supply are not isolated.
Make sure that unwanted circuit paths are not formed with the
equipment or device that is connected to the product.
2. To prevent inductive noise, wire the product separately from highvoltage sources and power lines carrying large currents. Also
avoid parallel wiring or shared wiring paths with power lines.
3. Do not allow the filter to become soiled. Use air blow or use a thin
cotton swab to clean the filter.
1. Installation
• Select a place where the emissivity is high for measuring the target.
If necessary, use black spray or black tape.
• Use the supplied locknuts to fix the ES1B securely in place. Tighten
to a torque of 0.5 N·m max.
• When measuring a high-temperature object, use a shield or similar
protection to prevent the temperature of the ES1B from rising.
2. Connection
• Connect to the green output lead wire (+), white output lead wire
(-), orange power supply lead wire (+), and shield power supply
wire (-).
• To measure the temperature difference between two locations, use
two isolated power supplies.
Power supply (+)
Power supply (−)
ES1B
DC power
supply
Output (+)
Output (−)
ES1B
Temperature
Controller
Output (−) Output (+)
Power supply (+)
Power supply (−)
DC power
supply
ES1B
Output (+)
Output (−)
ES1B
Output (−)
Output (+)
Temperature
Controller
Power
supply (+)
Power
supply (−)
DC power
supply
3. Adjustment
• The output impedance of the ES1B is 1 to 4 kW. Normally, current
leaking to the ES1B from the burnout detection circuit of the
temperature controller will offset the measured temperature in a
range extending from several degrees to several tens of degrees.
When using a controller equipped with an input shift function, use
the input shift function to compensate for this offset error in the
vicinity of the measuring temperature. For details on this
compensation, see Input Shift Method below and the user's manual
of the controller being used.
• If the length of a lead wire must be extended, use a K thermocouple
compensating conductor for the output lead wires (+, -), and
standard copper wire for power supply leads (+, -).
• Do not bend lead wires repeatedly.
4. Cleaning
• Do not use paint thinner or the equivalent for cleaning. Use
standard grade alcohol.
6
Infrared Thermosensor ES1B
Infrared Thermosensor
ES1B
7
Warranty and Application Considerations
Warranty and Limitations of Liability
WARRANTY
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or
other period if specified) from date of sale by OMRON.
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT,
MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER
ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET
THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR
IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS,
OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON
CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY.
In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE
PRODUCTS UNLESS OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED, STORED,
INSTALLED, AND MAINTAINED AND NOT SUBJECT TO CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE
MODIFICATION OR REPAIR.
Application Considerations
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of
products in the customer's application or use of the products.
Take all necessary steps to determine the suitability of the product for the systems, machines, and equipment with which it will
be used.
Know and observe all prohibitions of use applicable to this product.
NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT
ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON
PRODUCTS ARE PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR
SYSTEM.
Disclaimers
CHANGE IN SPECIFICATIONS
Product specifications and accessories may be changed at any time based on improvements and other reasons. Consult with
your OMRON representative at any time to confirm actual specifications of purchased product.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. H127-E1-01
In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Industrial Automation Company
Industrial Devices and Components Division H.Q.
Measuring Components Department
Shiokoji Horikawa, Shimogyo-ku,
Kyoto, 600-8530 Japan
Tel: (81)75-344-7080/Fax: (81)75-344-7189
8
Printed in Japan
0504-2M (0504) (?)