Initial Preparation - Hanna Instruments HI 8510 Instruction Manual

HI 8720E
Range
Resolution
Accuracy ±5 mV
Typical EMC Dev.
Installation Category
12
Input 10
Calibration Slope: 90 to 110% with slope trimmer
Relays 1 for setpoint and 1 for alarm,
max 2A, 240 V resistive load (isolated)
Recorder Output 0-20 mA or 4-20 mA (isolated)
Power Supply 115 or 230 Vac; 50/60 Hz
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
26
HI 8720T
±1000 mV
1 mV
±0.5%
±6 mV / ±0.2 mA
II
Ohm 4 to 20 mA
1 kg (2.2 lb.)
26£

INITIAL PREPARATION

• Connect a 3-wire cable to
the power supply terminal
according to the voltage level
as indicated, and pay par-
ticular attention to the correct
live, earth and neutral
connections.
• For E models, connect the
electrode to the BNC plug
on the rear panel.
• For T models, connect the
2 signal wires of the analog
transmitter to the "IN/OUT
TRANSMITTER" terminals,
while paying attention to the
indicated polarity.
• Recorder output terminals:
these contacts are used for
connection to a recorder.
The output can be 0-20 mA
or 4-20 mA depending on
model, and is proportional
to the pH or ORP reading.
• Pt100 terminals: these con-
tacts are used to connect
the Pt100 temperature
sensor for automatic tem-
perature compensation of pH
readings. If temperature com-
pensation is not required,
connect a 110 Ohm/0.25W
resistor across the terminals
(equivalent to a fixed tem-
perature of 25°C/77°F).
27
FUSE
FUSE
ELECTRODE
INPUT
+
mA OUT
-
PT100