pH Range
0.00 to 14.00 pH
pH Resolution
0.01 pH
pH Accuracy
±0.02 pH (0 to 100 °C); ±0.05 pH (-20 to 0 °C); ±0.5% (input from transmitter)
pH
Calibration
offset: ±2 pH with OFFSET trimmer; slope: 80 to 110% with SLOPE trimmer
pH
Temperature
Compensation
fixed or automatic with Pt100, from -20 to 100°C (-4 to 212°F)
pH Input
impedence
high impedance 10¹² Ohm; reference and matching pin inputs are available; 4-20
mA
Process Control Meter
Alarm Relay
Set Point
1, isolated, 2 A, max 240 V, resistive load, 1000000 strokes (not fuse protected)
Alarm Relay
Range
0.2 to 3.00 pH
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
Voltage
Output
±5 Vcc; 150 mA max load for amplified electrodes
Enclosure
flame retardant ABS body and front panel; transparent splash-proof front cover
Panel Cutout
141 x 69 mm (5.6 x 2.7’’)
Recorder
Output
0-20 mA or 4-20 mA (isolated)
Set Point
2, isolated, 2 A, max 240 V, resistive load, 1000000 strokes (not fuse protected);
range: alk. set: from 0.00 to 14.00 pH; acid set: from 0.00 to 14.00 pH
Power
Supply
115 VAC ±10%; 50/60 Hz
Environment
-10 to 50°C (14 to 122°F); RH max 95% non-condensing
Weight
1 kg (2.2 lb.)
Ordering
Information
The HI8711 is supplied complete with mounting brackets and instructions.
