HI8710 pH analog Controller with Self Diagnostic
Product code: MX-12559
Inputs: BNC connector, Direct wire connection with amplified probe (supports HI 1006 series probes) and 4-20 mA from a transmitter Extended temperature compensation range: -20 to 100°C Supports potential matching pin connection Both 4-20 and 0-20 mA output ±5V outputs for amplified electrodes Backlit LCD…
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Product description
Fail Safe Alarm System Hanna's exclusive Fail Safe Alarm System protects against problems caused by power supply failure or signal interruption, which are typical risks in industrial environments. An alarm condition is indicated by a red LED, located directly on the front panel of the controller. Overtime Dosage "Overtime dosagein. function with selection knob and jumper for disable on the rear panel. If the dosing relay remains continuously activated for more than selected dosing time the alarm relay is activated, the alarm LED is blinking and the dosing relay is deactivated. ORP Dosing Consent Device When used in conjunction with the HI8720 ORP controller, the ORP Dosing Consent Device function will ensure that the ORP dosage will start only when the pH level is correct. Automatic Temperature Compensation A 2-wire Pt100 can be connected to provide automatic temperature compensation of the pH measurements. Matching Pin Connection Supports potential matching pin connection to avoid typical problems caused by grounding loop current, such as progressive damage of the electrode, fluctuating measurements, and poor process regulation. Robust Design A removable, transparent splash-proof cover protects the front panel.
Specifications
| Range | 0.00 to 14.00 pH |
|---|---|
| Resolution | 0.01 pH |
| Accuracy @ 20 °C | ±0.02 pH (0 to 100 °C) ±0.05 pH (-20 to 0 °C) ±0.5% (input from transmitter) |
| Input | high 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 |
| Calibration | offset: ±2 pH with OFFSET trimmer slope: 80 to 110% with SLOPE trimmer |
| Temperature Compensation | fixed or automatic with Pt100, from -20 to 100°C (-4 to 212°F) |
| Recorder Output | 0-20 mA or 4-20 mA (isolated) |
| Setpoint Relay | 1, isolated, 2 A, max 240 V, resistive load, 1000000 strokes (not fuse protected) |
| Setpoint Range | 0.00 to 14.00 pH |
| Alarm Relay | 1, isolated, 2 A, max 240 V, resistive load, 1000000 strokes (not fuse protected) |
| Alarm Range | 0.2 to 3.00 pH |
| Consent Relay | 1, isolated, 2 A, max 240 V, resistive load, 1000000 strokes (not fuse protected) |
| Dosing Control | OFF/AUTO/ON with selection switch |
| Over Dosing Control | adjustable, from 5 min to 60 min with knob or disable by wire strap – on rear panel |
| Backlight | continuous on |
| Power Supply | 115 VAC ±10% or 230 VAC ±10%; 50/60 Hz |
| Enclosure | flame 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 Cutout | 141 x 69 mm (5.6 x 2.7′′) |
| Weight | 1 kg (2.2 lb.) |
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