HANNA INSTRUMENT HI 9124

User-selectable “ calibration time out” Automatic calibration Automatic Temperature Compensation Tutorial messages on LCD BEPS ( Battery Error Prevention System) alerts the user in the event that low battery power could adversely affect readings Battery % displayed on startup. The HI 9124 is a waterproof pH meter. A large dual-level LCD displays both the pH and temperature along with an operational guide. Graphic symbols are displayed to help the users during the calibration process. The pH calibration procedure is automatic with five memorized pH buffer values and buffer recognition to simplify the calibration process. This meter utilizes the HI 1230B double junction pH electrode. The double junction helps to minimize junction contamination for accurate, consistent results. Order Information: HI 9124 is supplied with HI 1230B pH electrode, HI 7662 temperature probe, HI 70004 pH 4.01 buffer solution sachet, HI 70007 pH 7.01 buffer solution sachet, 100 mL plastic beaker, batteries, instructions and hard carrying case. Range pH -2.00 to 16.00 pH Temperature 20.0 to 120.0° C / -4.0° F to 248.0° F Resolution pH 0.01 pH Temperature 0.1° C / 0.1° F Accuracy @ 20° C pH ± 0.01 pH Temperature ± 0.4° C / ± 0.8° F ( excluding probe error) pH Calibration automatic 1 or 2 point with 5 memorized buffer values ( 4.01, 6.86, 7.01, 9.18, 10.01) Offset Calibration ± 1 pH Slope Calibration From 80 to 108% Temperature Compensation automatic or manual, -20 to 120° C ( -4 to 248° F) pH Electrode HI 1230B, double junction, gel filled, BNC connector and 1 m ( 3.3’ ) cable ( included) Temperature Probe HI 7662 with 1 m ( 3.3’ ) cable ( included) Input Impedance 1012 Ohm Battery Type / Life 1.5V AAA ( 3) / approximately 200 hours of continuous use. Auto-off after 20 minutes of non-use ( can be disabled) Environment 0 to 50° C ( 32 to 122° F) ; RH max 100% Dimensions 185 x 72 x 36 mm ( 7.3 x 2.8 x 1.4’ ’ ) Weight 300 g ( 10.6 oz.)