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HI8720 Dual Setpoint – ORP analog Controller with 4 to 20mA

Product code: MX-12561

Inputs: BNC connector, Direct wire connection with amplified probe (supports HI 1006 series probes) and 4-20 mA from a transmitter Selectable manual ON, OFF and automatic dosing control for alkaline, acid and REDOX dosing with indicator Auto-diagnostic test for instrument status troubleshooting Operational mode LED…

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Product description

Auto-Diagnostic Feature Built-in autodiagnostic functions to enable the user to check and troubleshoot any malfunctions. The functions are made via front panel keys to isolate the cause of malfunction. Consent Contacts These contacts (maximum 2A, 220 V) are used for reduction and oxidation reactions when the pH controller is used in conjunction with an ORP Controller and vice versa. In these applications, the consent contacts of both meters are connected together to link the ORP and pH controllers so that ORP dosage will occur only if the actual pH value is correct. This is to avoid overdosage of oxidants or reductants which may lead to undesirable pollution. Alarm Contacts If the measured ORP is not within the tolerance of the set value, the alarm contact is closed. This can occur if there is insufficient dosage or if there is overdosage. Outputs You can choose the output configuration for connecting a recorder or a PLC, between 0-20 or 4-20 mA ORP Dosing Consent Device When used in conjunction with the HI 8710 pH controller, the ODCD (ORP dosing consent device) function (featured by the HI 8710) will ensure that the ORP dosage will start only when the pH level is correct. Robust Design A removable, transparent splash-proof cover protects the front panel.

Specifications

Range±1999 mV
Resolution1 mV
Accuracy @ 20 °C±5 mV; ±0.5% (input from transmitter)
Inputhigh impedance 10 12 Ohm; reference and matching pin inputs are available; 4-20 mA
Power Output±5 Vcc; 150 mA max load for amplified electrodes
Calibrationoffset: ±200 mV with CAL trimmer
Recorder Output0-20 mA or 4-20 mA (isolated)
Setpoint Relay1, isolated, 2 A, max 240 V, resistive load, 1000000 strokes (not fuse protected)
Setpoint Range±1999 mV
Alarm Relay1, isolated, 2 A, max 240 V, resistive load, 1000000 strokes (not fuse protected)
Alarm Range10 to 300 mV
Dosing ControlOFF/AUTO/ON with selection switch
Over Dosing Controladjustable, from 5 min to 60 min with knob or disable by wire strap – on rear panel
Backlightcontinuous on
Power Supply115 VAC ±10% or 230 VAC ±10%; 50/60 Hz
Enclosureflame retardant ABS body and front panel; transparent splash-proof front cover
Environment-10 to 50°C (14 to 122°F); RH max 95% non-condensing
Panel Cutout141 x 69 mm (5.6 x 2.7’’)
Weight1 kg (2.2 lb.)