To Next PageTo Next Page
Need help?Do you have a question about the Hanna Instruments HI 221 and is the answer not in the manual?
General| pH Resolution | 0.01 pH |
|---|---|
| pH Accuracy | ±0.01 pH |
| Type | pH Meter |
| pH Range | -2.00 to 16.00 pH |
| mV Range | ±2000 mV |
| mV Resolution | 0.1 mV |
| mV Accuracy | ±0.2 mV |
| Temperature Resolution | 0.1°C |
| Temperature Accuracy | ±0.5°C |
| Temperature Compensation | Automatic or manual |
| Input Impedance | 10¹² Ohms |
Steps to inspect the instrument after unpacking to ensure no damage occurred during shipping.
Provides a general overview of the HI 221 and HI 223 bench meters and their features.
Details the components and controls on the front panel of the instrument.
Identifies and describes the connectors and ports located on the rear panel.
Lists the technical specifications for the HI 221 pH meter model.
Lists the technical specifications for the HI 223 pH meter model.
Instructions for connecting power supply and electrode/probe assemblies.
Steps for powering on the instrument and its initial self-test sequence.
Detailed steps for performing accurate pH measurements after proper calibration.
Guide on how to conduct Oxidation-Reduction Potential (ORP) measurements.
Procedure for measuring temperature using the dedicated temperature probe.
Steps for preparing buffer solutions and the instrument for calibration.
Step-by-step instructions for performing a standard two-point pH calibration.
Steps for conducting a single-point pH calibration when appropriate.
Interpretation of various error messages encountered during calibration.
Understanding warning messages related to calibration quality and electrode condition.
How to interpret the electrode condition and response time gauges.
Overview of GLP functions for data storage and retrieval of calibration status.
Instructions on how to store current measurement data into the instrument's memory.
Procedure for retrieving and reviewing previously logged data records.
Steps for removing logged data records or entire dates from memory.
Explains how to enter and navigate the instrument's setup menu for configuration.
How to configure the time-out period for calibration reminders.
Procedure to set and manage the instrument's unique identification number.
Steps for setting the current time and date on the instrument.
How to adjust the pH measurement resolution for the HI 223 model.
How to enable or disable the audible beep feedback for key presses.
How to configure baud rate and command prefix for serial data transfer.
Detailed procedure for calibrating the instrument's temperature sensor.
Step-by-step guide for recalibrating the mV measurement function.
Instructions on how to connect the instrument to a computer for data transfer.
How to control the instrument remotely via a PC terminal program.
Lists basic commands for instrument control and data retrieval.
Lists commands that query the instrument and expect a data response.
Initial steps for handling electrodes, including removing protective caps and checking for air bubbles.
Best practices for storing electrodes to maintain their performance and longevity.
Routine inspection and upkeep procedures for electrodes and their cables.
Detailed methods for cleaning electrodes using specialized cleaning solutions.
Solutions for issues related to slow electrode response or signal drift.
Steps to troubleshoot and eliminate noise or fluctuations in measurements.
Solutions for common calibration failures and incorrect readings.
Guidance on interpreting and resolving general "Err xx" error messages.
Lists the available pH buffer solutions for calibration purposes.
Lists solutions for storing and cleaning the instrument's electrodes.
Lists electrolyte solutions required for refilling refillable electrodes.
Details various pH electrode types and their specific applications.
Lists additional accessories such as adapters, simulators, and software.
Important advice for users regarding safe operation and environmental considerations.
