Instrument installation
Instrument dimensions Instrument dimensions(Side view)
Insert the instrument into the square hole
and fix it with the collocated clip.
Insert mounting hole size
Embedded installation
93 mm
93 mm
(± 0.5 mm)
(± 0.5 mm)
3
92.5 mm
10 mm
120 mm
98 mm
98 mm
MENU
ESC
pH
14.51 mA
C1
SP1 SP2
14.001
25.0
°C
pH
T4000
Installation of back
cover with
waterproofing seal
Daily maintenance
Generally, the instrument does not need daily maintenance. If there is any fault, you can contact
our company and carry out adjustment and repair under the guidance of our technical
personnel (you can send it back to our company for help or check).
Simple checking method: set the parameter zero potential E0 to 0.0mV, and the slope to 1.00,
and then short circuit the terminals of the meter "PH+" and "PH-", and the meter should display
7.00 or within the basic error range;Connect 2K resistance to feet of "29" /TEMP+ and "30" /TEMP,
and the temperature of the meter should be displayed around 27.5˫
or within the basic error
range
. If the display is not correct, means the meter is outof working,please contact the
manufacturer timely for maintenance.
The sensor electrode maintenance should pay attention to the following points:
(1) when adopting the circulation structure
, the velocity of the inlet water sample should be ke
pt
as constant as possible
.
(2) Upon deliver
y,
the electrode head is provided with a protective cap containing electrode
soaking liquid to maintain the wetting of sensitive membrane
.Tak
e off the protective cap before
use and screw on the protective cap when not in use
.
(3)The new electrode can be immersed in 3.3 mK
CL solution for 24 hours to ensure the accuracy
of calibration
.
(4)It is recommended to calibrate before installation.When installing the measuring pool
, the glass
bulb of composite electrode should not be collided to avoid damage.
(5)When the water is cut off on site for a long time without use,the electrode should be screwed
on the protective cap in time, and the protective cap should be put into a 3.3m concentration
soaking solution
, which can not be dried, otherwise it is easy to fail!
(6)There is dirt on the glass bult at the top of the electrode
, which can be cleaned with 0.1n
hydrochloric acid
, and then activated after invasion into 3.3mkcl solution
. Do not touch it by
hand
.To ensure long-term correct measurement, the electrode should be cleaned,
maintained
and calibrated regularly.Antimony electrode will produce oxidation after being used for a period
of time
, and the electrode head will become black. F
ine sandpaper can be used to polish the
electrode head and remove the oxidation part, so as to ensure the sensitivity of electrode
measurement
.
(7)keep the electrode cable and connector clean and dry, not damp or water.
(8) The electrode shall be replaced if it fails or is damaged.It is recommended to replace one in
a year
.
When the electrode is not in use, it should be soaked in the solution
.
The preparation of the immersion solution: tak
e a package of pH4 buffer
, dissolve it in 250ml pure
water
, and then add 56g of analytical pure KCl.
Heat it properly and stir until it is completely
dissolved
.(note: the electrode is easy to fail when stored in dry state)
20
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