Hanna Instruments HI 3512 - Manual (Page 63)

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• Resistivity, EC and temperature reading on the
Resistivity range
• TDS, EC and temperature reading on the Resistivity
range
• Salinity, EC and temperature reading on the
Resistivity range
The answer string contains:
• Meter mode (2 chars):
• 10 pH range/0.001 resolution on channel 1
• 11 pH range/0.01 resolution on channel 1
• 12 pH range/0.1 resolution on channel 1
• 13 mV range on channel 1
• 14 Relative mV range on channel 1
• 15 ISE range on channel 1
• 20 EC range on channel 2
• 21 Resistivity range on channel 2
• 22 TDS range on channel 2
• 23 Salinity range on channel 2
• Meter status (2 chars of status byte): represents a 8
bit hexadecimal encoding.
• 0x10 - temperature probe is connected
• 0x01 - new GLP data available
• 0x02 - new SETUP parameter
• 0x04 - out of calibration range
• 0x08 - the meter is in autoend point mode
• Reading status (2 chars): R - in range, O - over
range, U - under range. First character corresponds
to the primary reading. Second character corresponds
to the second reading (if second reading exists).
• The unit of the reading (2 chars) (for ISE, EC, Resis-
tivity, TDS, Salinity ranges only)
• for ISE range it represent the index of the unit
selected from setup (0-ppt, 11-User)
• for EC range: 0 - microsiemens, 1 - milisiemens
• for TDS range: 0 - ppm, 1 - g/L
• for Salinity range the unit represents always %
• Primary reading (corresponding to the selected range)
- 12 ASCII chars, including sign and decimal point
and exponent.