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Command 4:

Conversion Equation Settings

{ 4, Equation Number, Equation Type, Number Format, Constants }

1. Equation Number

0 Clear all Command 4 data.

1 Specify CH1.

2 Specify CH2.

3 Specify CH3.

4 Specify SONIC channel.

2. Equation Type

Analog CH1, CH2, CH3

(Channel = 1, 2, 3)

Equation Name Format Restrictions

1 Polynomial K0+K1X+K2X

+…+KnX

n = 0 to 9

2 Mixed Polynomial K

–mX

–m

+…+K–1X

–1

+K0+K1X+……+KnX

m = 1 to 4

n = 0 to 5

m+n > 0

X ≠ 0

3Power K0X

(K1)

+K2 X > 0

4 Modified power K0K1

(X)

+K2 K1 > 0

5 Logarithmic K0+K1 In(X) X > 0

6 Modified logarithmic K0+K1 In(1/X) X > 0

7 Exponential K0 e

(K1X)

+K2

8 Modified exponential K0 e

(K1/X)

+K2 X ≠ 0

9 Geometric K0 X

(K1X)

+K2 X > 0

10 Modified geometric K0 X

(K1/X)

+K2 X > 0

11 Reciprocal logarithmic [K0+K1 In(K2X)]

–1

+K3 K2X > 0

12 Steinhart-Hart model [K0+K1 (In 1000X)+K2 (In 1000X)

]

–1

+K3 X > 0

SONIC

(Channel = 4)

0 Clear conversion equation.

1 Conversion equation temperature specification

3. Number Format and Unit

• Number Format

Analog CH1, CH2, CH3

(Channel = 1, 2, 3)

0Standard

10 Integer part only

• Unit

SONIC

(Channel = 4)

0 °C (Celsius)

1 °F (Fahrenheit)

°F = (9/5) × °C + 32

2 °C (Celsius)

3K (Kelvin)

4 °R (Rankin)

R = 1.8 × °C + 491.67

4. Constants and Temperature

• Constants

Analog CH1, CH2, CH3

(Channel = 1, 2, 3)

Polynomial: Input constants in sequence from Kn = 0

Mixed polynomial: Input constants in sequence from m= 4 to 1, n = 0 to 5.

• Temperature

SONIC

(Channel = 4)

Sound velocity is calculated from this value and unit.

Sound Velocity m/s = 331.5 + 0.6 × °C

Default sonic velocity is 343 m/s.

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