6

Infrared Thermosensor

ES1B

Precautions

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 high-

voltage 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.

3. Adjustment

• The output impedance of the ES1B is 1 to 4 k

W. 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.

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.

!CAUTION

Temperature

Controller

DC power

supply

Power supply (+)

Power supply (

−)

DC power

supply

Power supply (+)

Power supply (

−)

Output (+)

Output (+)

ES1B

ES1B

Output (

−)

Output (

−)

Temperature

Controller

DC power

supply

Power

supply (+)

Power

supply (

−)

Output (+)

Output (+)

ES1B

ES1B

Output (

−)

Output (

−)