SSI A20829, Operation Manual, Page: 14 / 38

Single Gas Sensor Module (SGSM)
Operations Manual
Super Systems Inc. Page 14 of 38 Page 14 of 51
Register Name Register Location Description
SENSOR_NH3_FLOW 1102 NH3 flow
SENSOR_DA_FLOW 1103 DA flow
SENSOR_H2_FLOW 1104 H2 Flow
SENSOR_PV_MODE 1105
Process variable (0 = H2, 1 = DA,
2 = NH3, 3 = Kn, 4 = Standard
Kn)
SENSOR_INPUT_TYPE_REG 1106 Input for voltage inputs
SENSOR_MIN_H2 1108 minimum H2 value
SENSOR_CO2_PRESENT 1109
concentration of CO2 present.
Important for H2 measurement
only
SENSOR_PV_REMOVE_NEGATIVE 1110
Makes any negative number
zero
SENSOR_GEN_QUEUE_ENABLE 1150 Allows for a generic write
SENSOR_GEN_QUEUE_START 1151 Start of write. E.g., register 45.
SENSOR_GEN_QUEUE_ADDRESS 1152 Address of board to write to.
SENSOR_GEN_QUEUE_NUM_WORDS 1153
Number of words to write down
up. Up to 30
SENSOR_GEN_QUEUE_BLOCK 1154 write up to 30 words
SENSOR_READ_REGISTERS 1200
just designates where to start
writing
MB_READ_VERSION_NUMBER 1200
current version number of the
firmware
MB_READ_PELLISTOR_AVDD 1201 A/D analog voltage supply
MB_READ_PELLISTOR_EXCV 1202
Pellistor bridge excitation
voltage
MB_READ_PELLISTOR_VDC 1203 Pellistor voltage
MB_READ_PELLISTOR_NA 1204
Pellistor Normalized
Absorbance
MB_READ_PERC_H2 1205 H2 x 10000
MB_READ_PER_H2_MANT 1206 H2 mantissa
MB_READ_PER_H2_EXP 1207 H2 exponent
MB_READ_PER_DA 1208 DA value
MB_READ_PER_NH3 1209 NH3 value