Spark SP22 Instruction Manual

SP22
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
correct use of these instruments.
MAJOR 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 damage
and each meter is supplied with:
• Mounting brackets
• Instruction manual
• Two screwdriver for install and
calibration
GENERAL INFORMATION
SP22 is panel-mounted pH
indicators and controllers designed
for simplicity of use in a wide
range of industrial applications.
Connections and wiring to
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: 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 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
Calibration Manual, through
CAL (Offset) &
Slope tune trimmer
Dosing Contact
Dosing Maximum 2A (fuse
protected), 250
Vac,
Contact Open=Acid
Dosing dosage=Relay ON
Selection if Measure > Set
Acid or Alk, point
Contact Close=Alk
dosage=Relay ON
if Measure < Set
point
Set point
Set point Adjustable, from 0
to 14 pH
Overtime
Overtime Adjustable,
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 best measurement, we
recommend to calibrate the
instrument once every week.
And the procedure as following: -
with meter in measurement mode,
immerse electrode and Matching
Pin (if available) in pH 7.01 buffer
solution, shake briefly and wait for
reading to stabilize. Adjust the
CAL trimmer until "7.0" is
displayed on the LCD. And for
more accurate result use 4.01
buffer solution and Adjust the
Slope Tune trimmer until "4.0" is
displayed on the LCD.
ACCESSORIES

Calibration and Installation
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
calibration process
6.
SET to adjust the set point
take 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