Choosing the right controller needs to be decided based on the following criteria:
- Parameters to be measured: pH, mV, T°C, Conductivity
- Range
- Control desired: ON / OFF or proportional
- Set points: 1 or 2 for pH, 1 for other types of controllers
- Is an alarm needed
- Output signal: analog 4 to 20 mA to record or digital RS-232
HI 933700 (Two Models)
click on photo
to enlarge | | Range | 0 to 2000 µS/cm or
0 to 4000 µS/cm | | Control | ON/OFF | | Set Point | 1 | | Alarm | No | | Output | No |
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HI 943500(Four Models)
click on photo
to enlarge | | Range | 0.0 to 199.9 mS/cm (Model A)
0.00 to 19.99 mS/cm (Model B)
0 to 1999 µS/cm (Model C)
0.0 to -199.9 µS/cm (Model D) | | Control | ON/OFF | | Set Point | 1 | | Alarm | Yes | | Output | Analog |
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