- Dedicated to boiler and cooling tower applications
- Flat-tipped, pre-amplified pH probe with titanium body
- Multi-level LCD display
- On-screen tutorial messages for calibration and set-up
- Automatic Temperature Compensation
- Automatic one or two point calibration
- BEPS (Battery Error Prevention System) alerts the user in the event that low battery power could adversely affect readings
- Battery % displayed on startup.
- Compact, heavy-duty, and waterproof
- Easy to clean flat-tip sensor
HI 99141 is a waterproof, portable pH/ temperature meter supplied with a flat tip probe specifically designed for boiler and cooling tower applications.
The HI 72911D pre-amplified double junction pH probe features a recessed flat tip that is easy to clean and prevents solids in solutions from collecting on the sensor. The titanium body of the HI 72911D functions as a potential matching pin for increased stability of readings and extended sensor life.
Order Information: HI 99141 is supplied with HI 72911D pH/ temperature probe, HI 70004 pH 4.01 buffer solution sachet, HI 70007 pH 7.01 buffer solution sachet, HI 700661 electrode cleaning solution sachets (2), batteries, instructions and hard carrying case.
 Manual: Download
  Manual: Download
Specification :
| Range | pH | -2.00 to 16.00 pH | 
| Temperature | -5.0 to 105.0°C / 23.0 to 221.0°F | |
| Resolution | pH | 0.01 pH | 
| Temperature | 0.1°C / 0.1°F | |
| Accuracy @ 20°C | pH | ±0.02 pH | 
| Temperature | ±0.5°C (up to 60°C), ±1.0°C (outside) / ±1.0°F (up to 140°F); ±2.0°F (outside) | |
| pH Calibration | automatic one or two point calibration with two sets of memorized buffers (Standard 4.01, 7.01, 10.01 or NIST 4.01, 6.86, 9.18) | |
| Temperature Compensation | Automatic, -5 to 105°C (23 to 221°F) | |
| pH Electrode | HI 72911D titanium body, pre-amplified pH electrode with internal temperature sensor, DIN connector and 1 m (3.3’ cable) (included) | |
| Battery Type / Life | 1.5V AAA (3) / approximately 1200 hours of continuous use. Auto-off after eight minutes of non-use | |
| Environment | 0 to 50°C (32 to 122°F); RH max 100% | |
| Dimensions | 152 x 58 x 30 mm (6.0 x 2.3 x 1.2”) | |
| Weight | 205g (7.2 oz.) | 
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