Spark SP22 Instruction Manual

SP22 & SP23
Instruction Manual
Panel-Mounted pH
Indicators & Controllers
Dear Customer,
Thank you for choosing a Spark
Instruments product. Please read
this instruction manual carefully
before using these instruments.
This manual will provide you with
the necessary information for the
correct use of these instruments.
MAJOR EXAMINATION
Remove the instrument from the
packing material and examine it
carefully to ensure no damage
occurred during shipping. If
there is any damage and each
meter is supplied with:
• Mounting brackets
• Instruction manual
• Two screwdrivers for
installation and calibration
GENERAL INFORMATION
SP22 &SP23 is a panel-mounted
pH indicators and controller
designed for simplicity of use in a
wide range of industrial
applications.
Connections and wiring to the
electrode, power supply, and
contacts are made via the terminal
blocks on the rear panel.
The meters are equipped with a
BNC socket and accept input from
any conventional pH electrodes.
Other features include an overtime
control system, selection of dosing
direction (Acid/Alk.), one dosing
contact, multi-color LED for
indicating if the meter is in
measurement/dosing/ alarm
condition, possibility to set (Off-
Auto-On switch) dosing action
mode SP22&23 powered at 220
Vac.
SPECIFICATIONS
Range 0.0 to 14.0 pH
Resolution 0.1 pH
Accuracy Accuracy (@ 25 °C
/ 77 °F) ±0.2 pH
Calibration
Manual, through
Calibration
CAL (Offset) &
Slope tune trimmer
Dosing Contact
Maximum 2A (fuse
Dosing
protected), 250
Vac,
Contact Open=Acid
dosage=Relay ON if
Dosing
Measure > Set Point
Selection
Contact Close=Alk
Acid or Alk,
dosage=Relay ON if
Measure < Set Point
Recorder 4 to 20 mA, accuracy
±0.20 mA, 500 Ω
Output
(Only SP23) maximum load
Set point
Adjustable, from 0
Setpoint
to 14 pH
Overtime
Adjustable,
Overtime
typically, from 5 to
approx. 30 minutes
Power
10 VA
Consumption
External (fuse
Power
protected), 220/230
supply
Vac; 50/60 Hz
Dimensions 93 x 100 x 79 mm
CALIBRATION
To achieve the best measurement,
we recommend calibrating the
instrument once every week.
And the procedure is as follows: -
with the meter in measurement
mode, immerse the electrode and
Matching Pin (if available) in pH
7.01 buffer solution, shake briefly,
and wait for the reading to
stabilize. Adjust the CAL trimmer
until "7.0" is displayed on the
LCD. And for more accurate
results use the 4.01 buffer solution
and Adjust the Slope Tune
trimmer until "4.0" is displayed on
the LCD.
ACCESSORIES
•
Calibration and Installation
of screwdrivers
•
Mounted bracket
FEATURE DESCRIPTION
Front panel
1.
Liquid Crystal Display
2.
Switch for selecting dosing
mode:
•
OFF = Dosing disabled
•
Auto =Automatic dosage,
depending on set point
•
ON = Dosing always active
3.
RGB-LED indicator:
•
Green = meter in
measurement mode
•
Orange/Yellow = dosing in
progress
•
Red, blinking = indicates an
alarm condition
4.
CAL to adjust the pH offset
value during calibration
5.
Slope Tune to adjust the pH
slope tune value during the
calibration process
6.
SET to adjust the set point
take the value (0 to 14
pH)
7.
SET Point indicator green led
flashing when set point switch
is pressed
8.
Time Out indicator yellow led
flashing when dosing setting
over time dosing for
protection.
9.
Measure key to set the
instrument to measurement
mode
10.
SET Point key to display and
set the set point value