HI981914 Pool Line Professional Waterproof Portable pH/ORP meter is a highly accurate that is equivalent to meters used in laboratories. HI 981914 offers many advanced features from a large dot matrix LCD that provides for an intuitive user interface in the operation of the meter, log on demand for storing readings, USB port for transferring data, GLP data for tracking calibration data, and Hanna’s exclusive CAL Check for pH calibration diagnostics. During the calibration process the meter analyzes the mV signal being generated and provides warnings to whether the probe needs to be cleaned or of the buffer is contaminated. After calibration the meter displays the overall health of the pH electrode as a percentage and is based on both the offset (mV value in pH 7 buffer) and slope (mV difference from pH 7 to pH 4/10) characteristics.
The HI981914 uses pH and ORP probes with a BNC connector. The BNC connector can be used with process probes for evaluation of their performance. For pH it is possible to set the meter to a “default” calibration that resets the meter to the ideal mV response for a pH probe. When this is done then it is possible to connect a pH probe and perform a calibration. CAL-Check will provide the diagnostic messages to indicate potential problems. For example if the meter display condition at 10% or flashing then it would be recommended to clean the probe. If after cleaning the probe and the condition remains low after a subsequent calibration then this would be an indicator that the probe is reaching it end of life. The probe characteristics can be reviewed using the GLP feature. An acceptable offset value is ±30 mV and the slope should be better than 90%. Values greater than ±60 mV or a slope less than 85% are indicators that the probe needs to be replaced in the near future to avoid a service calls due to probe failure or loss of control parameters.
For ORP probes the mV function and a 470 mV test solution is used to check the performance of an ORP electrode. A probe not reading correctly should be cleaned and the platinum sensor surface polished. If an acceptable value is not obtained then the ORP probe should be replaced.
The HI981914 can be used for process calibration as well in which the measurement is made with a calibrated pH probe or a measurement by an ORP probe and the value entered into a process controller to match the measured values.
On-Screen Features
Setup Screen
Our extensive setup screen features a host of configurable options such as time, date, temperature units and language for help screens and guides.
CAL Check Probe Diagnostics
Choose from seven standard pH buffers and five custom values to obtain up to five-point calibration and achieve high precision readings with a 0.001 pH resolution and a pH accuracy of ±0.002.
GLP
Comprehensive GLP functions are directly accessible by pressing the GLP key. Calibration data, including: date, time, offset, slope and buffers used in the last calibration can be reviewed.
Features/Benefits:
Ergonomic, rugged, waterproof (IP67) design
pH CAL Check™
- Alerts user to potential problems during calibration including when to clean electrode and possible buffer contamination.
- Displays overall probe condition based on offset and slope after calibration
Five point pH calibration with seven standard buffers and five custom buffers
Five point ISE calibration with seven preprogrammed standard in choice of concentration
ISE direct concentration readout in a choice of concentration units
Automatic Temperature Compensation
Log-on-demand
- Store measurement data at the press of a button
AutoHold
- freezes reading on display upon stabilization
GLP features
- GLP data including date, time, calibrated values, slope and offset (pH)
Calibration timeout to alert the user at a defined interval when the calibration has expired
Multiple language selection
200-hour battery life with battery level displayed on measurement screen
Menu driven for ease of use with virtual-key extended functionality
Contextual help at the press of a button
Backlit, graphic LCD
Meter displays a clock tag that will disappear when the reading has achieved stability
Battery Error Prevention System (BEPS)
- Turns meter off when battery power is too low for an accurate measurement
Connectivity
- PC connectivity via a sealed opto-isolated micro USB and HI92000 software
PRIMARY APPLICATIONS: Food & Beverage, Plating, Water and Wastewater, Chemical Manufacturing, Agriculture, and Environmental
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