HI-8711 allows the selection of two set points with two independent outputs for acid and alkaline dosages.
Each model accepts either a direct input from a pH or ORP electrode or from a transmitter through 4-20 mA input. The instrument also provides ±5V power output and input terminals for amplified electrodes. In addition, you can choose the output configuration for connecting a recorder or a PLC, between 0-20 or 4-20 mA.
The HI-8711 incorporates adjustable overtime dosage protection from 5 to 60 minutes. If dosing exceeds selected time, the alarm will be triggered and the dosing contact will deactivate. This feature can be activated or deactivated.
A removable, transparent splash-proof cover protects the front panel.
Hanna Instruments Panel Mounted pH Analog
#Grup produk P107658025
Spesifikasi
| Dosing Control | OFF/AUTO/ON with selection switch |
|---|---|
| Power Output (V) | ±5; 150mA max load for amplified electrodes |
| Panel Cut Out (mm) | 141x69 (5.6x2.7inch) |
| Input | High impedance 10 12 Ohm; Reference and Matching pin inputs are available; 4-20 mA |
| Enclosure | Flame retardant ABS body and front panel;;transparent splash-proof front cover |
| Recorder Output (mA) | 0-20 or 4-20 (isolated) |
| Accuracy (pH) | ±0.02 (0 to 100°C);±0.05 (-20 to 0°C);±0.5% (input from transmitter) |
| Alarm Range | 0.2 to 3.00 pH |
| Alarm Relay | 1, isolated, 2 A, Max 240 V, resistive load, 1000000 strokes (not fuse protected) |
| Backlight | Continuous ON |
| Calibration | Offset: ±2 pH with OFFSET trimmer;;Slope: 80 to 110% with SLOPE trimmer |
| Over Dosing Control | Adjustable, from 5 min to 60 min with button or disable by wire strap - on rear panel |
| Power Supply (V) | 115 or 230AC; 50/60 Hz |
| Range pH | 0.00 to 14.00 pH |
| Resolution (pH) | 0.01 |
| Set Point Range (pH) | 0 to 14 |
| Set Point Relay | 2, isolated, 2 A, Max 240 V, resistive load, 1000000 strokes (not fuse protected) |
| Temperature Compensation | fixed or Automatic with Pt100, from -20 to 100°C (-4 to 212°F) |
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