HI1036-18xx Multiparameter Digital pH, ORP, Temperature Probe The HI1036-18xx is a digital combined probe that measures pH, ORP, and temperature. This probe also incorporates a potential matching pin. The matching pin is considered the “earth ground” connection and is used to prevent ground loop e¨ects from causing erratic readings and damage to the system. The pH glass has been chosen to produce stable quick equilibration even in low conductivity waters. Additionally, the pH sensor is designed to produce a zero mV value near pH 4 (not pH 7 like typical pH sensors) that will stop the process control when the sensor is broken. A broken pH electrode that produces a mV value near pH 4 would produce an alarm state and disable any pump activated. The ORP sensing surface is a large smooth surfaced platinum band that encircles the circumference of the temperature probe. It is referenced to Ag/AgCl reference electrode (3.5M KCl). The ORP and pH sensors and reference electrode use a di¨erential measurement technique which is known to stay in service and provide accurate measurements under adverse conditions that may cause conventional pH probes to produce erroneous measurements. The HI1036-18xx probe with its di¨erential ampliers greatly reduces inaccuracies caused by ground loops which may exist between process and instrument grounds. With the di¨erential technique, a ground loop current will ºow through the low impedance path of the matching pin thus providing immunity to the measurement signals. Additionally the probe converts these measurements to a digital signal to eliminate noise and static due to high impedance signals carried by cable. The HI1036-18xx with Hanna pool controllers help to promote the health and safety of pool and spa water. Specifications HI1036-18xx Range pH 0.00 to 12.00 pH ORP ±2000 mV Temperature 0.0 to 70.0 °C (32.0 to 158.0 °F) Reference Ag / AgCl reference electrode (3.5M KCl) Junction Cloth Matching pin Yes Body PVDF Top thread 3/4” NPT Cable length 2, 5, 10, 15, 20 m (6’7”, 16’5”, 32’9”, 49’3”, 65’7”) cable Connector DIN connector Maximum pressure @25 °C 3 bar (43.5 psi) Ordering Information HI1036-1802 probe with 2 m (6’7”) long cable HI1036-1805 probe with 5 m (16’5”) long cable HI1036-1810 probe with 10 m (32’9”) long cable HI1036-1815 probe with 15 m (49’3”) long cable HI1036-1820 probe with 20 m (65’7”) long cable Flow Cell for • BL120-20 • BL121-20 • BL122-20 • BL123-20 • BL131-20 • BL132-20 15 Process Instrumentation 15.30 | www.hannainst.com controllers
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