The HI99141 is a waterproof, portable pH and temperature meter specifically designed for boilers and cooling towers.
The HI729113 pre-amplified double junction pH probe features a flat tip sensor that is easy to clean and prevents solids in solutions from collecting on the sensor. The titanium body of the HI729113 functions as a potential matching pin for increased stability of readings and extended sensor life.
- Automatic Temperature Compensation
- Automatic Two-Point Calibration
- Waterproof
The HI99141 meter features a large multi level LCD screen which displays both pH and temperature readings simultaneously with 0.01 pH resolution and an accuracy of ±0.02 pH. The LCD screen also has indicators for calibration status and stability, as well as on-screen tutorial messages. The HI99141 has many advanced features that are found in more expensive portable instrumentation including automatic calibration, buffer recognition,and temperature compensation. The battery percent level is displayed at start up alerting the user to the remaining battery power that is available.
The HI99141 is supplied with the amplified titanium body pH/temperature electrode. The titanium body is resistant to many aggressive chemicals and extremely durable.The titanium body acts as a matching pin for the flat tip pH electrode. A matching pin is a differential measurement technique used to eliminate electrical noise in a pH measurement system. The matching pin coupled with a pre-amplifier provides for an increased response time in pH measurement and extends the electrode life.
The HI729113 also features a large annular polytetrafluoroethylene (PTFE) junction. This large junction is resistant to chemicals but has a large surface area allowing for maximum diffusion of ions from the inside of the reference electrode into the sample resulting in a fast, stable reading. The flat tip pH electrode with a PTFE junction in a titanium body make the HI729113 ideal for the water treatment industry.
Unbreakable titanium body
Titanium construction provides an unbreakable structure and allows the transfer of heat to the internal temperature sensor for rapid temperature compensation.
Maintenance free, gel-filled electrode
No fill solution required.
Features at-a-glance
- Automatic Temperature Compensation
- One or two-oint automatic calibration
- BEPS - Alerts the user of low battery power that could adversely affect readings
- Compact, heavy-duty, and waterproof
- Battery % displayed on start-up
- HELP feature displays tutorial messages on LCD
| SKU | HI99141 |
|---|---|
| Product Name | Boiler and Cooling Tower pH Portable Meter - HI99141 |
| Quote Required | Yes |
| pH Range | -2.00 to 16.00 pH; -2.0 to 16.0 pH |
| pH Resolution | 0.01 pH; 0.1 pH |
| pH Accuracy | ±0.02 pH; ±0.1 pH |
| pH Calibration | automatic, at one or two points with two sets of standard buffers (pH 4.01 / 7.01 / 10.01 or pH 4.01 / 6.86 / 9.18) |
| pH Temperature Compensation | automatic �.0 to 105.0 °C/23.0 to 221.0 °F |
| pH CAL Check (electrode diagnostics) | probe condition indicator |
| mV Range | ±825 mV (pH‐mV) |
| mV Resolution | 1 mV (pH‐mV) |
| mV Accuracy | ±1 mV (pH‐mV) |
| Temperature Range | -5.0 to 105.0°C / 23.0 to 221.0°F |
| Temperature Resolution | 0.1°C / 0.1°F |
| Temperature Accuracy | ±0.5°C (up to 60°C); ±1.0°C (outside) / ±1°F (up to 140°F); ±2.0°F (outside) |
| pH Electrode | HI729113 titanium body, pre-amplified pH electrode with internal temperature sensor, quick connect DIN connector and 1 m (3.3’ cable) (included) |
| Automatic Shut-Off | user selectable |
| Battery Type/Life | 1.5V (3) AAA / approximately 1400 hours of continuous use |
| IP Protection | IP67 |
| Environment | 0 to 50°C (32 to 122°F); RH max 100% |
| Dimensions | 154 x 63 x 30 mm (6.1 x 2.5 x 1.2”) |
| Weight | 196 g (6.91 oz.) |
| Ordering Information | HI99141 is supplied with HI729113 pH probe, HI70004 pH 4.01 buffer solution sachet (1), HI70007 pH 7.01 buffer solution sachet (1), HI700601 electrode cleaning solution sachets (2), batteries, 100 mL beaker (1), instructions, calibration certificates for meter and probe, and rugged thermoformed carrying case. |
US 11910 
GB 9458 
CA 8040 
AU 7626 
IE 3850 
NZ 2018 
IN 634 
RU 553 
