Hanna Instruments HI 98188 User Manual

Page 57

Advertising
background image

57

value (xx):

• xx=10 EC range
• xx=11 Resistivity range
• xx=12 TDS range
• xx=13 USP range
• xx=14 NaCl % range
• xx=15 Salinity, Sea water range
• xx=16 Salinity, PSUrange

The instrument will answer for these commands with:

<STX> <answer

> <ETX>

where:

<STX> is 02 ASCII code character (start of text)
<ETX> is 03 ASCII code character (end of text)
<answer>:
<ACK> is 06 ASCII code character (recognized command)
<NAK> is 21 ASCII code character (unrecognized command)
<CAN> is 24 ASCII code character (corrupted command)

COMMANDS REQUIRING AN ANSWER
The instrument will answer for these commands with:

<STX> <answer> <checksum> <ETX>

where the checksum is the bytes sum of the answer string sent as 2 ASCII characters.
All the answer messages are with ASCII characters.
RAS

Causes the instrument to send a complete set of readings in
according with the current range:

• EC and temperature readings or EC range.
• Resistivity, EC and temperature readings on Resistivity
• TDS, EC and temperature readings on TDS range
• Salinity, EC, and temperature or Salinity range.
The answer string contains:
• Meter mode (2 chars):

• xx=10 EC range

• xx=11 Resistivity range

• xx=12 TDS range

• xx=13 USP range
• xx=14 NaCl % range
• xx=15 Salinity, Sea water range
• xx=16 Salinity, PSU range

Advertising