Hanna Instruments BL 983314 User Manual
Instruction Manual
BL 983314-0
BL 983314-1
Panel-Mounted
Resistivity
Indicators & Controllers
Dear Customer,
Thank you for choosing a Hanna product.
This manual will provide you with the necessary information
for the correct operation of the meter. Please read it carefully
before using the instrument.
If you need additional technical information, do not hesitate
to e-mail us at tech@hannainst.com.
These instruments are in compliance with the directives.
PRELIMINARY EXAMINATION
Remove the instrument from the packing material and
examine it carefully. If any damage has occurred during
shipment, immediately notify your Dealer or the nearest
Hanna Customer Service Center.
Each meter is supplied with:
• HI 3314 resistivity probe
• Mounting brackets
• Instruction manual
Note: Conserve all packing material until the instrument
has been observed to function correctly. Any defective
item must be returned in its original packing.
SPECIFICATIONS
Range 0.00 to 19.90 MΩ/cm
Resolution 0.10 MΩ/cm
Accuracy (@ 20°C/68°F) ±2% f.s.
Typical EMC Deviation ±2% f.s.
Probe HI 3314 resistivity probe (included)
Temp. Compensation Automatic and Linear
from 5 to 50°C (41 to 122°F)
Temperature Coefficient β=2.4 ; 3.5 ; 4.5 %/°C
User-selectable through rear jumper
Calibration Factory calibrated
Dosing Contact Maximum 2A (fuse protected), 250 Vac, 30 Vdc
Contact close when measure < setpoint
Setpoint Adjustable, from 0 to 19.90 MΩ/cm
Overtime Adjustable, typically from 5 to approx. 30 minutes
Power Consumption 10 VA
Installation Category II
Power supply: External (fuse protected)
BL983314-0 12 Vdc
BL983314-1 115/230 Vac ; 50/60Hz
Dimensions 83 x 53 x 99 mm (3.3x2.1x3.9”)
CE DECLARATION OF CONFORMITY
WARRANTY
These instruments are warranted for two years against defects in workmanship and materials when used for their intended purpose and
maintained according to instructions. Probes are warranted for six months.
This warranty is limited to repair or replacement free of charge. Damages
due to accident, misuse, tampering or lack of prescribed maintenance are
not covered. If service is required, contact the dealer from whom you
purchased the instrument. If under warranty, report the model number,
date of purchase, serial number and the nature of the failure. If the repair
is not covered by the warranty, you will be notified of the charges incurred.
If the instrument is to be returned to Hanna Instruments, first obtain a
Returned Goods Authorization Number from the Customer Service department and then send it with shipment costs prepaid. When shipping any
instrument, make sure it is properly packaged for complete protection.
Recommendations for Users
Before using these products, make sure that they are entirely suitable for the environment
in which they are used. Operation of these instruments in residential areas could cause
unacceptable interferences to radio and TV equipment. The metal band at the end of the
probe is sensitive to electrostatic discharges. Avoid touching this metal band at all times.
During operation, ESD wrist straps should be worn to avoid possible damage to the probe by
electrostatic discharges. Any variation introduced by the user to the supplied equipment may
degrade the instrument’s EMC performance. To avoid electrical shock, do not use these
instruments when voltages at the measurement surface exceed 24 Vac or 60 Vdc. To avoid
damages or burns, do not perform any measurement in microwave ovens.
GENERAL DESCRIPTION
BL983314-0 and BL983314-1 resistivity indicators and
controllers have been designed for continuous monitoring of
process solutions.
The setpoint value can be fixed by acting on the trimmer on
the front panel, and after selection of the required limit, the
output relay allows to control an external dosing device.
Connections and wiring to probe, power supply and contacts
are made via the terminal blocks on the rear panel.
The probe is easy to clean and requires little maintenance.
Other features include: user-selectable temperature coefficient
for readings compensation, overtime control system, multicolour LED for indicating if the meter is in measurement/
dosing/alarm condition, possibility to set (Off-Auto-On switch)
dosing action mode.
Two models are available:
• BL 983314-0 powered at 12 Vdc
• BL 983314-1 powered at 115 or 230 Vac
ASSEMBLING VIEW
ACCESSORIES
HI 3314 Resistivity probe
HI 710005 12 Vdc power adapter, US plug
HI 710006 12 Vdc power adapter, European plug
HI 710012 12 Vdc power adapter, Australian plug
HI 710013 12 Vdc power adapter, South African plug
HI 710014 12 Vdc power adapter, UK plug
HI 731326 Calibration screwdriver (20 pcs)
HI 740146 Mounting brackets
FUNCTIONAL DESCRIPTION
OPERATIONS
Front panel Rear panel
1. Liquid Crystal Display
2. Switch for selecting dosing mode:
• OFF = dosing disabled
• Auto = automatic dosage, depending on setpoint value
• ON = dosing always active
3. “MEAS” key to set the instrument to measurement mode
4. “SET” key to display and set the setpoint value
5. “SET” trimmer to adjust the setpoint value
6. 3-colour LED indicator:
• Green = meter in measurement mode
• Orange/Yellow = dosing in progress
• Red, blinking = indicates an alarm condition
1. TC jumper for selection of temperature coefficient (β)
2. Connections for HI 3314 resistivity probe
3. Power supply terminal:
• for BL983314-0 model: 12 Vdc adapter
• for BL983314-1 model: 115 Vac or 230 Vac option
4. This contact acts as a switch for driving the dosing system (e.g.
dosing pump)
5. Not used contact
6. Jumper for enabling (jumper in) or disabling (jumper
removed) the overtime control
7. Trimmer for overtime setting (typically from 5 to 30 minutes)
All external cables connected to the rear panel
should end with cable lugs.
A circuit breaker (rated 6A max.) must be
connected in close proximity to the equipment, and in a position easy to reach by the
operator, for disconnection of the instrument
and of all the devices connected to the relays.
REAR PANEL CONNECTIONS
Terminals #1: Probe
• Connect the supplied HI3314 probe by following the wires
colour indications.
Terminals #2: Power Supply
• Model BL983314-0: connect the 2 wires of a 12 Vdc
power adapter to the terminals +12 Vdc and GND.
• Model BL983314-1: connect a 3-wire power cable to the
terminals while paying attention to the correct earth (PE),
line (L) and neutral (N1 for 115 V or N2 for 230 V) contacts.
Terminals #3: Dosing Contact
• This contact drives the dosing system, accordingly to the
selected setpoint.
Note: The setpoint has a typical hysteresis value comparable
to the meter accuracy.
Terminals #4: Not Used Contact
Overtime system: jumper (#5) and trimmer (#6)
• This system allows the user to set a maximum dosing
period, by adjusting the rear trimmer from 5 (min) to
approx. 30 (max) minutes.
• When the set time is exceeded, any dosing action stops,
the LED indicator on the front panel will blink Red and the
LCD will show the “TIMEOUT” warning message. To exit
the overtime condition, set the OFF/Auto/ON switch to
“OFF” position, and then to “Auto” again.
• For disabling the overtime feature, simply remove the
jumper on the rear panel.
Note: The overtime system works only if the OFF/Auto/ON
switch is in “Auto” position.
OPERATING THE METER
Attach the resistivity probe to the meter and immerse it in
the solution to be monitored while making sure that the
metal pins are completely submerged.
Press the “MEAS” key (if necessary) and wait for a few
seconds to allow stabilization of reading.
The LCD will display the resistivity value of the solution in
MΩ/cm unit. The LED indicator will light up Green when the
meter is in measurement mode and dosing is not active,
while will light up Orange/Yellow for signaling that a dosing
action is in progress.
CALIBRATION
The meter is factory calibrated.
If recalibration is needed, please contact your dealer or the
nearest Hanna Service Center.
SETPOINT
Press the “SET” key: the display will show the default or
previously adjusted value, together with the “SET” indication.
Using a small screwdriver adjust the “SET” trimmer until the
desired setpoint value is displayed.
After 1 minute the meter automatically returns to the normal
mode; or press the “MEAS” key.
SELECTING TEMPERATURE COEFFICIENT
The reading is automatically corrected for temperature variations by using the linear compensation method:
R25=R
(1+β(t-25))
t
where Rt is the resistivity at the temperature t.
The reference temperature is 25ºC.
The coefficient β is user-selectable through the “TC” jumper on
the rear panel.
Three values are available: 2.4, 3.5 or 4.5%/ºC.
Follow the below diagram to set the desired coefficient.
Note: If the coefficient 4.5%/ºC is selected, a minimum
measurement temperature of 10ºC is suggested to
maintain the best accuracy of the meter.
ISTBL3314R2 04/05
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