Hanna Instruments HI 8510 User manual

HI8711 allows the selection of two set points with two independent outputs for acid and alkaline
dosages.
•Auto-diagnostics to verify offset and slope calibration and electrode contamination deterioration
•Fail Safe Alarm System protects against problems caused by power supply failure or signal
interruption
•Selectable manual ON, OFF and automatic dosing control for alkaline and acid dosing with
indicator.
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.
Self-Diagnostic Test
•Built-in autodiagnostic functions enable the user to check and troubleshoot any malfunctions.
The functions are made via front panel keys to isolate the cause of malfunction whether it is due
to pH electrode contamination, internal offset circuit or the amplifier circuit.
Overtime Dosing Protection
•The HI8711 incorporates adjustable overtime dosing 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.
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.
Output and Input Connections
•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. Moreover, you can choose the output configuration for connecting a
recorder or a PLC, between 0-20 or 4-20 mA.
obust Design
•A removable, transparent splash-proof cover protects the front panel.
pH

pH ange 0.00 to 14.00 pH
pH esolution 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 elay
Set Point 1, isolated, 2 A, max 240 V, resistive load, 1000000 strokes (not fuse protected)
Alarm elay
ange 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’’)
ecorder
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.

1
Instruction Manual
HI 8510-HI 8512
HI 8710-HI 8711
HI 8720-HI 931500
HI931501-HI932500
Panel - Mounted
ORP - pH Indicators
andControllers
SLOPE
DOSAGE
OXID. REDUC.
∆AL
COARSE
SET
FINE
∆AL
MEA
SURE SET
0 mV
TEST 500 mV
TEST
HI 8720E
ORP
mV
http://www.hannainst.com
These Instruments are in Compliance with the CE Directives

2
DearCustomer,
Thank you for choosing a Hanna Instruments
Product.
Please read this instruction manual carefully
beforeusingtheinstrument.
Thismanualwillprovideyouwithalltheneces-
sary information for the correct use of the
instrument, as well as a precise idea of its
versatilityinawiderange ofapplications.
These instruments are in compliance with
directives.
PreliminaryExamination ............................. 3
GeneralDescription..................................... 3
MechanicalDimensions .............................. 5
FunctionalDescriptionHI 8510.................... 6
FunctionalDescriptionHI 8512.................... 9
FunctionalDescriptionHI 8710.................. 12
FunctionalDescriptionHI8711 .................. 16
FunctionalDescriptionHI 8720.................. 20
FunctionalDescriptionHI931500 .............. 24
FunctionalDescriptionHI931501 .............. 26
FunctionalDescriptionHI932500 .............. 29
SpecificationsHI8510 and HI8512 ........... 31
SpecificationsHI 8710 andHI 8711 ........... 32
SpecificationsHI8720 and HI 931500 ....... 33
SpecificationsHI931501andHI 932500.... 34
InitialPreparation ...................................... 35
OperationalGuide ..................................... 38
pHCalibration ........................................... 42
pHValuesatVariousTemperature............. 44
pH Diagnostic Tests .................................. 45
ORP Diagnostic Tests............................... 47
LEDIndication........................................... 48
TakingRedoxMeasurements .................... 49
ElectrodeConditioningandMaintenance... 50
SuggestedInstallations ............................. 57
Accessories.............................................. 59
Warranty ................................................... 65
CEDeclarationofConformity .................... 66
TABLE OF CONTENTS

3
PRELIMINARY EXAMINATION
Remove the instrument from the packing
material and examine it carefully to make
sure that no damage has occurred during
shipping. If there is any noticeable damage,
notify your Dealer.
Note: Save all packing materials until you
are sure that the instrument functions
correctly. All defective items must be
returned in the original packing materials
together with the supplied accessories.
GENERAL DESCRIPTION
HI 8510, HI 8512, HI 8710, HI 8711, HI 8720,
HI 931500, HI 931501 and HI 932500 are pH-
ORP panel-mounted indicators and control-
lers designed for simplicity of use in a wide
range of industrial process applications.
The models are designed with DIN standard
panel mount with membrane keypads on the
front panel, a large LCD display and
autodiagnostic functions (not HI 931500,
HI 931501 and HI 932500).
Connections to the power supply, contacts
and recorders are made through screw termi-
nals on the rear panel.
Two models are available for HI 8510, HI 8711,
HI 8512, HI 8520. The E-model accepts input
direct from the pH or ORP electrode, while
the T-model accepts a 2-wire current loop of
4 to 20mA from a pH or ORP transmitter.
HI 931500, HI 931501 and HI 932500 are
equipped with a BNC socket to connect a
pH-ORP electrode.
Other features include: recorder output in 0
to 20mA or 4 to 20 mA; LED indicators
which identify the controller mode.

4
Using the pH indicators in conjunction with a
4-20mA output pH transmitter HI 8614 or
HI 8614L (with LCD display) and using the
ORP indicators in conjunction with a 4-20 mA
output ORP transmitter HI 8615 or HI 8615L
(with LCD display) will assure you of a strong,
interference-free signal at distances up to
300 m (1000 ft).
All instruments are supplied with a plastic
transparent front cover and mounting brack-
ets (electrode and mains cable excluded).

5
MECHANICAL DIMENSIONS
The meters have a DIN 43 700 casing in
black anodized aluminum. Front and back of
the instruments are supplied with shockproof
ABS plastic and a transparent protective cover
for the front panel.
Front view of the panel-mounted unit.
These dimensions show the cutout size for
the installation.
Side view of the panel-mounted unit.
Adjustable location brackets (supplied with
the meter) allow the indicator to slide into the
cutout and will hold the unit securely in place.
190 mm (7.50") is the minimum amount of
room required to install the indicator with the
cables connected.
190mm MIN
7.50"
135mm
5.31"
0.25/4mm
0.01/0.160"
144mm
5.67"
ADJUSTABLE
LOCATION
BRACKET
141mm
5.55" 144mm 5.67"
69mm
2.71"
72mm
2.83"

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FUNCTIONAL DESCRIPTION HI 8510
pH INDICATOR
FRONTPANEL
SLOPE
∆
SENSOR
TEST
pH 7
TEST pH 4 TEST
pH
HI 8510E
pH
Keypad
SENSORTEST
TodisplaythemVresponseoftheelectrodein
ordertoverifyitsworkingcondition
pH 7 TEST
Toverifytheinternalcircuitofthemeterinterms
ofOffsetcompensation
pH 4 TEST
Toverify the amplifiercircuitofthemeter
Trimmers
∆∆
∆∆
∆OForOffsetcalibration
SLOPE ForSlopecalibration

7
Unplug the instrument from the power
supplybeforereplacingthefuse.
1.FuseHolder
2.Power supply
3.Recorderoutput
4.ConnectionsforPT100temperaturesensor
5. BNC socket for pH electrode.
FUSE
FUSE
ELECTRODE
INPUT
PT100
mA OUT
+
-
220
110
L
1
2
3
4
5
REARPANELHI8510E

8
Unplug the instrument from the power
supplybeforereplacingthefuse.
1.FuseHolder
2.Power supply
3.Recorderoutput
4. Connections to the transmitter.
REARPANELHI8510T