HLS-440P datasheet(8/23 Pages) AMSCO

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[v1-00] 2015-Apr-01

HLS-440P − Electrical Inter face

Byte 0 H2 Concentration

Figure 8:

Byte 0 Bit Order

This byte shows the H2 concentration in a resolution of 0.05.

x = Concentration in % Hydrogen

Byte value = (x % H2)* 200/ (10 % H2)

x % = byte value *(10 % H2)/200

Range: 0 - 200 (Hexadecimal 0 - C8)

No value: 255 (Hexadecimal FF)

Values: 0 - 10 % H2

Resolution: 0.05 = (10 % H2) / 200

The No value is sent if there is no valid H2 concentration

(accompanied by Not_ready bit in status byte (Byte 1))

Byte 1 Status

Figure 9:

Byte 1 Status Bit Assignment

This byte shows the status of the module.

Bit 0: If the not_ready bit is set, the module is not up or not

working.

Value: 0 or 1

Bit 1 + 2: The error category

Value: 0 - 3

The figure below describes the error category definition

Bit

MSB

LSB

Byte 0

XXXXX

XXX

Bit

MSB

LSB

Byte 1

Bit 7

Bit 6

Neg_

drift3

Bit 5

Neg_

drift2

Bit 4

Neg_

drift1

Bit 3

EMC_

Corr

Bit 2 Err_

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