HI99151

Description

Designed to bring simplicity to pH testing during the beer making process, the HI99151 Beer Analysis pH Meter is engineered to withstand the tough environment of the brewery. The specialized probe features a titanium body, flat glass tip, and renewable cloth junction making it ideal for measuring the pH of mash or wort during the beer making process.

•  Great for all brewers, from professional to home brewers!
•  Titanium pH electrode for increased durability while brewing.
•  Waterproof design for use during the brewing process.

In the brewing process, the enzymes required to convert the starch into sugar are pH-sensitive with an optimal pH range between 5.2 pH and 5.6 pH. Different compounds are used to adjust the pH including phosphoric acid, lactic acid, and gypsum.

Wort clarity and break formation are also affected by pH. Protein coagulation occurs during wort boiling, where the optimum pH is around 4.9, even though a common boil pH is 5.2. A pH that is too high will not only inhibit coagulation but also promote browning due to the interaction of amino acids and reducing sugars.

Hop utilization during the wort boil is also affected by pH. As pH increases, the solubility of hop resins increases. Unfortunately for hop lovers, a high pH also increases the release of tannins resulting in a harsher taste. Higher pH also favors elevated microbial activity.

As a living catalyst, yeast maintains a pH around 6.5 within its cells; however, the preference is to inhabit a more acidic environment. During the fermentation stage, the pH should be lower to accommodate the yeast and also to ensure microbial stability and consistent flavoring of the beer; an optimal pH range during fermentation is between pH 4.1 and 4.3.

The HI99151 ph meter for brewing uses the FC214D amplified pH electrode with titanium body. This specialized electrode offers numerous features that improve pH testing in beer. An integrated temperature sensor allows for temperature compensated pH measurements without the need for a separate temperature probe. The probe’s spheric sensing tip has a wide surface area for measurement in aqueous solutions.

A typical pH electrode has a junction made of cloth material. This cloth material can be easily clogged by samples such as mash, which has a high solids content, or wort, which is viscous. With the cloth junction of the FC214D, it is possible to clear any obstruction by simply extracting 1/8” of the junction from the electrode. This exposes a new, renewed portion.

  Features at-a-glance

  Automatic Calibration
•  One or two-point calibration is automatic to two selectable buffer sets.

  Automatic Temperature Compensation
•  An integrated temperature sensor allows for automatic temperature compensation of pH measurements.

  Battery Error Prevention System
•  The meter will automatically shut off if there isn’t enough power to obtain an accurate measurement.

Battery Life Indicator
•  The battery percent level is displayed at start up alerting the user to the remaining battery power that is available.

  Multi-Level LCD Display
•  The split-level LCD displays both pH and temperature readings, along with indicators for reading stability, battery percentage, and calibration instructions.

  On-Screen Tutorial
•  Clear tutorial messages and directions are available on-screen to quickly and easily guide users through setup and calibration.

Waterproof
•  The HI99151 ph meter for home brewing is a waterproof meter rated IP67 for immersion in up to one meter of water for 30 minutes.

   SPECIFICATIONS

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 buffers (standard 4.01, 7.01,10.01 or NIST 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 :	FC214D pre-amplified pH probe 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 :	-5 to 50°C (23 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.)
Ordering Information :	HI99151 is supplied with FC214D pH/temperature probe, HI70004 pH 4.01 buffer solution sachet (20 mL), HI70007 pH 7.01 buffer solution sachet (20 mL), HI700661 electrode cleaning solution sachets (2 x 20 mL), batteries, instruction manual, and hard carrying case.
Warranty :	2 years (probe 6 months)