ES1C

4

B Two-point Shift

1. Measuring the Temperature of the Measurement Object

Set the temperature of the measurement object to room

temperature and to the temperature during operation, and

check the values indicated by the connected device (A)

and the temperatures of the measurement object (B).

2. Shifting the Indicated Value

Use the following formula to calculate the upper limit and

lower limit of input scaling after the shift from the values Y1

and Y2 indicated by the connected device and tempera-

tures X1 and X2 of the measurement object.

(1) Scaling upper limit after shift (

°C)

(2) Scaling lower limit after shift (

°C)

Change the values to the scaling upper and lower limits

from the result considering the decimal point position. For

example, if the scaling upper limit after shift is 487.5 (

°C)

and the scaling lower limit after shift is

−12.5 (°C), the dec-

imal point position of the connected device will be set to the

first decimal position, and so the scaling upper limit will be

set to 4,875 and the scaling lower limit to

−125.

● Adjustment Example for the K3GN

A Shift Method

1. Measuring the Temperature of the Measurement Object

Use a thermometer (B) to measure the actual temperature

when using the measurement object (C).

2. Shifting the Display Value

Adjust the settings of the connected device after checking

the following value:

Temperature B (thermometer)

− Temperature A (connect-

ed device)

If temperature B minus temperature A is 10.0, adjust the

settings so that measurement value of the connected de-

vice is +10.0.

• Scaling display value 1 = 0 to 100

• Scaling display value 2 = 4,000 to 4,100

(The setting for the decimal point position is 0000.0, and so

the scaling set value will be increased by 100 for a dis-

played value of +10.0.)

B Two-point Shift

Use the teaching function of the K3GN to make adjustments

using the ES1C's actual analog input value and the actual tem-

perature. Set one of the two teaching points to room tempera-

ture and the other to the actual temperature of the

measurement object during operation.

1. Move the K3GN to the initial setting level.

2. Set the temperature of the object to be measured to room

temperature and set scaling input value 1 using teaching.

Next, set the temperature (B) of the thermometer to scal-

ing display value 1. (Point

A in the following figure. The

decimal point position for the K3GN is set to the first deci-

mal position, and so set 250 for 25.0

°C.)

3. Next, set the measurement object to the actual operating

temperature and set scaling input value 2 and scaling dis-

play value 2 in step 2. (A value of 1,000 is set to specify

100.0

°C for point B in the following graph.)

Value indicated by

connected device (A)

Temperature of mea-

surement object (B)

Room tem-

perature

Y1

X1

Temperature

during opera-

tion

Y2

X2

Before shift

After shift

Value indicated by connected device (A)

X1 room

temperature

(e.g., 25

°C)

X2 temperature

during operation

(e.g., 100

°C)

Value indicated after shift

(e.g., 100.0)

Value Y2 indicated before

shift (e.g., 90.0)

Value Y1 indicated before

shift (e.g., 30.0)

Value indicated after shift

(e.g., 25.0)

Temperature

displayed by

thermometer (B)

(

°C)

(

°C)

X2 X1

–

Y2 Y1

–

---------------------400 Y1

–

() X1

+

=

X2 X1

–

Y2 Y1

–

---------------------0 Y1

–

() X1

+

=

Before shift

After shift

Value indicated by connected device (A)

Measurement

object temperature

(e.g., 100

°C)

Value indicated after shift

(e.g., 100.0)

Value indicated before

shift (e.g., 90.0)

Temperature

displayed by

thermometer (B)

(

°C)

(

°C)

+10.0

0

A

B

Value indicated by connected device (A)

Measurement object at operating

temperature (e.g., 100

°C)

Measurement object at room

temperature (e.g., 25

°C)

Scaling input value 2

(e.g., 8.02 mA)

Scaling input value 1

(e.g., 5.01 mA)

Scaling display value 2

(e.g., 100.0

°C)

(

°C)

Scaling display value 1

(e.g., 25.0

°C)

Input value of

connected

device

(mA)