Casio EA-200 Technical Reference - Manual (Page 14)

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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 K 0 +K 1 X+K 2 X 2 +…+K n X n n = 0 to 9
2 Mixed Polynomial K –m X –m +…+K –1 X –1 +K 0 +K 1 X+……+K n X n m = 1 to 4
n = 0 to 5
m+n > 0
X ≠ 0
3 Power K 0 X (K 1 ) +K 2 X > 0
4 Modified power K 0 K 1
(X) +K 2 K 1 > 0
5 Logarithmic K 0 +K 1 In(X) X > 0
6 Modified logarithmic K 0 +K 1 In(1/X) X > 0
7 Exponential K 0 e (K 1 X) +K 2
8 Modified exponential K 0 e (K 1 /X) +K 2 X ≠ 0
9 Geometric K 0 X (K 1 X) +K 2 X > 0
10 Modified geometric K 0 X (K 1 /X) +K 2 X > 0
11 Reciprocal logarithmic [K 0 +K 1 In(K 2 X)] –1 +K 3 K 2 X > 0
12 Steinhart-Hart model [K 0 +K 1 (In 1000X)+K 2 (In 1000X) 3 ] –1 +K 3 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)
0 Standard
10 Integer part only
• Unit
SONIC
(Channel = 4)
0 °C (Celsius)
1 °F (Fahrenheit)
°F = (9/5) × °C + 32
2 °C (Celsius)
3 K (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.