The HI99141 is a waterproof, portable pH and temperature meter specifically designed for boiler and cooling tower applications. The HI72911D 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 HI72911D functions as a potential matching pin for increased stability of readings and extended sensor life.

Includes:

• (1) HI72911D pH probe
• (1) HI70004 pH 4.01 buffer solution sachet
• (1) HI70007 pH 7.01 buffer solution sachet
• (2) HI700661 electrode cleaning solution sachets
• (3) 1.5V batteries(1) Instructions
• (1) Hard carrying case

• pH Range:    -2.00 to 16.00 pH
• pH Resolution:   0.01 pH
• pH Accuracy:    ±0.02 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)
• 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)
• Temperature Compensation:    automatic from -5.0 to 105.0ºC (23 to 221ºF)
• Electrode/Probe:    HI72911D titanium body, pre-amplified pH electrode with internal temperature sensor, DIN connector and 1 m (3.3’ cable) (included)
• Battery Type/Life:   1.5V (3) AAA / approximately 1200 hours of continuous use; auto-off after 8 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:    205 g (7.2 oz.)