Key facts
- Brand
- Hanna Instruments
- Model
- HI 23
- Documents
- 2
- Languages
- EN
- Last added
- 2012-07-09
Start here

Hanna Instruments HI 23/HI 24 Series Conductivity and TDS Process Controllers Instruction Manual
This document provides operating instructions for the Hanna Instruments HI 23 and HI 24 Series, which are real-time microprocessor-based EC or TDS process controllers. These wall-mounted units offer accurate measurements with flexible ON/OFF or proportional control capabilities, analog input/output, dual setpoints, alarm signals, and RS-485 communication options.
Read onlineHanna Instruments HI 23 specifications
| Measurement Ranges (NaCl) | 0.0 to 400.0% |
|---|---|
| Temperature Range | -9.9 to 120.0 C |
| Accuracy (EC) | +/- 1% of reading or 0.05 uS/cm, whichever is greater |
| Accuracy (Temp) | +/- 0.4 C |
| Power Supply | 12 Vde power adapter |
| Dimensions | 240 x 182 x 74 mm (9.4x 7.1 x29) |
| Weight | 1.1 Kg (2.4 Ib) |
Source: Hanna Instruments HI 2300 Bench Meter Instruction Manual
All Hanna Instruments HI 23 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the default temperature compensation mode?
The default compensation mode is ATC (Automatic Temperature Compensation).
From: Hanna Instruments HI 2300 Bench Meter Instruction Manual
How do I disable autoranging to freeze a specific range?
Press the LOCK key to disable autoranging and freeze the current range on the LCD.
From: Hanna Instruments HI 2300 Bench Meter Instruction Manual
What are the EC working ranges for these controllers?
The available EC working ranges are 0 to 199.9uS, 0 to 1999S, 0 to 19.99mS, and 0 to 199.9mS.
From: Hanna Instruments HI 23/HI 24 Series Conductivity and TDS Process Controllers Instruction Manual
Can the TDS measurement be switched on?
Yes, for the HI 24 series it is possible to switch to TDS measurements with a conversion factor from 0.00 to 1.00.
From: Hanna Instruments HI 23/HI 24 Series Conductivity and TDS Process Controllers Instruction Manual
