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The HI981954 is a waterproof portable logging multiparameter meter that monitors up to 9 different water quality parameters. It’s multi-sensor probe allows for the measurement of key parameters including pH, ORP, conductivity, and temperature. The probe transmits readings digitally to the meter, where data points can be displayed and logged. The complete system is simple to setup and easy to use.
The meter has a built-in pressure transducer for barometric pressure readings.
- One probe with field replaceable pH/ORP, EC and temperature sensors
- Auto-ranging for EC and TDS readings
- Display up to 11 measurements simultaneously
pH Features
- Calibration- up to a three-point calibration with five standard buffers and one custom buffer available
- pH in mV option – useful for diagnostics
- GLP data – offset, slope, date, time and buffers used
- Automatically temperature compensated readings
- pH or pH/ORP field replaceable sensors
- Gel filled and maintenance free
- Double junction for reduced contamination of reference cell
EC/TDS/Resistivity Features
- Calibration – single-point calibration from six standards
- Temperature compensation
- Automatic Temperature Compensation
- Configurable temperature coefficient range from 0.00 to 6.00%/°C
- Choice of reference temperatures at 20 or 25°C
- Absolute conductivity can be displayed along with the temperature compensated value
- Auto-ranging
- Salinity readings
- Practical Salinity Scale (PSU) based on conductivity calibration
Backlit Graphic LCD Display
- The HI981954 features a backlit graphic LCD with on-screen help and the capability to display up to nine parameters simultaneously. The graphic display allows for the use of virtual keys to provide for an intuitive user interface.
Automatic Temperature Compensation
- Integrated temperature sensor allows for automatic temperature compensation of pH and conductivity measurements.
Waterproof Protection
- The meter is enclosed in an IP67 rated waterproof casing and can withstand immersion in water at a depth of 1 m for up to 30 minutes. The probe features an IP68 rating for continuous immersion in water.
Dedicated Help Key
- Contextual help is always available through a dedicated “HELP” key. Clear tutorial messages and directions are available on-screen to quickly and easily guide users through setup and calibration. The help information displayed is relative to the setting/option being viewed.
GLP Data
- HI981954 includes a GLP feature that allows users to view calibration data and calibration expiration information at the touch of a key. Calibration data includes date, time, buffers/standards used for calibration, and slope characteristics.
PC Connectivity
- Logged data can be transferred to a Window’s compatible PC with the included HI920015 micro USB cable and HI9298194 software.
Quick Connect Digital Probe
- The HI7698195 probe features a Quick Connect DIN connector that makes a waterproof connection with the meter.
Long Battery Life
- The display of the meter has a battery icon indicator to show the remaining power. The meter uses four 1.5V AA batteries that provide up to 360 hours of battery life.
Color Coded, Field Replaceable Sensors
- Sensor replacement is quick and easy with field replaceable, screw type connectors that are color coded for easy sensor port identification
Data Logging
- The HI981954 allows users to store up to 45,000 continuous or log-on-demand samples with logging intervals from one second to three hours.
Standard or Quick Calibration
- Quick Calibration provides a speedy, single point calibration for pH and conductivity. Standard pH calibration options are available for calibrating up to three points from a selection of five standard buffers and one custom buffer. Conductivity calibration is a single point from six standard selections or one custom standard.
Intuitive Keypad
- The fitted rubber keypad has dedicated keys for power, backlight, up/down arrows, help and alphanumeric characters. The meter also features two virtual soft keys that navigate the user through the configuration of each parameter, meter setup, and logging of data. The interface is intuitive for any user’s level of experience.
Auto-sensor Recognition
- The probe and meter automatically recognize the sensors that are connected. Any ports not used on the probe will not have the parameter displayed or be configurable.
Rugged Custom Carrying Case
- The HI981954 meter, probe, and all accessories are supplied in a rugged carrying case designed to provide years of use. The inside compartment of the carrying case is thermoformed to securely hold and protect all of the components.
Specifications
| pH / mV | Range Resolution Accuracy Calibration |
0.00 to 14.00 pH / ±600.0 mV 0.01 pH / 0.1 mV ±0.02 pH / ±0.5 mV automatic one, two, or three points with automatic recognition of five standard buffers (pH 4.01, 6.86, 7.01, 9.18, 10.01) or one custom buffer |
|---|---|---|
| ORP | Range Resolution Accuracy Calibration |
±2000.0 mV 0.1 mV ±1.0 mV automatic at one custom point (relative mV) |
| EC | Range Resolution Accuracy Calibration |
0 to 200 mS/cm (absolute EC up to 400 mS/cm) manual: 1 µS/cm; 0.001 mS/cm; 0.01 mS/cm; 0.1 mS/cm; 1 mS/cm; automatic: 1 µS/cm from 0 to 9999 µS/cm; 0.01 mS/cm from 10.00 to 99.99 mS/cm; 0.1 mS/cm from 100.0 to 400.0 mS/cm; automatic mS/cm: 0.001 mS/cm from 0.000 to 9.999 mS/cm; 0.01 mS/cm from 10.00 to 99.99 mS/cm; 0.1 mS/cm from 100.0 to 400.0 mS/cm±1% of reading or ±1 µS/cm whichever is greater automatic single point, with six standard solutions (84 µS/cm, 1413 µS/cm, |
| TDS | Range Resolution Accuracy Calibration |
0.0 to 400.0 ppt (g/L) (the maximum value depends on the TDS factor) manual: 1 ppm (mg/L); 0.001 ppt (g/L); 0.01 ppt (g/L); 0.1 ppt (g/L); 1 ppt (g/L); automatic: 1 ppm (mg/L) from 0 to 9999 ppm (mg/L); 0.01 ppt (g/L) from 10.00 to 99.99 ppt (g/L); 0.1 ppt (g/L) from 100.0 to 400.0 ppt (g/L); automatic ppt (g/L): 0.001 ppt (g/L) from 0.000 to 9.999 ppt (g/L); 0.01 ppt (g/L) from 10.00 to 99.99 ppt (g/L); 0.1 ppt (g/L) from 100.0 to 400.0 ppt (g/L) ±1% of reading or ±1 ppm (mg/L) whichever is greater based on conductivity or salinity calibration |
| Resistivity | Range Resolution Accuracy Calibration |
0 to 999999 Ω•cm; 0 to 1000.0 kΩ•cm; 0 to 1.0000 MΩ•cm dependent on resistivity reading based on conductivity or salinity calibration 0.00 to 70.00 PSU |
| Salinity | Range Resolution Accuracy Calibration |
0.00 to 70.00 PSU 0.01 PSU ±2% of reading or ±0.01 PSU whichever is greater based on conductivity calibration |
| Seawater σ | Range Resolution Accuracy Calibration |
0.0 to 50.0 σt, σ₀, σ₁₅ 0.1 σt, σ₀, σ₁₅ ±1 σt, σ₀, σ₁₅ based on conductivity or salinity calibration |
| Temperature | Range Resolution Accuracy Calibration |
-5.00 to 55.00°C; 23.00 to 131.00°F; 268.15 to 328.15K 0.01°C; 0.01°F; 0.01K ±0.15°C; ±0.27°F; ±0.15K automatic at one custom point |
| Additional Specifications |
Temperature Compensation Logging MemoryLogging Interval PC Connectivity Environment Battery Type / Life Dimensions / Weight |
automatic from -5 to 55°C (23 to 131°F)
45,000 records one second to three hours |
| Ordering Information |
HI981954 is supplied with HI7698195/4 multiparameter probe with 4m (13’) cable, HI7698194-1 pH/ORP sensor, HI7698194-3 EC sensor, HI7698295 short protective probe shield, HI9828-20 quick calibration solution, HI76981952 probe maintenance kit, HI7698290 calibration beaker, HI9298194 PC software, HI920015 micro USB cable, batteries (4), quality certificate, and instruction manual in a rugged carrying case with custom insert. |
|---|---|
| Accessories | HI710034 orange protective rubber boot |
