Installation and Electrical Connection
Installation
Note: The sensor should not be installed upside down or
horizontally when installed, at least at an angle of 15 degrees or
more.
Wiring
a) Red line - power cord (12 ~ 24V)
b) Black line - ground (GND)
c) Blue line - 485A
d) White line - 485B
e) Bare wire - shielded wire
After wiring is completed, it should be carefully checked to avoid
incorrect connections before powering up.
Cable specification: Considering that the cable is immersed in
water (including sea water) for a long time or exposed to the air,
the cable has certain corrosion resistance. The outer diameter of
the cable is Φ6 mm and all interfaces are waterproof.
Maintenance
Use and maintenance
When measuring the pH sensor, it should be cleaned in distilled
water (or deionized water), and the filter paper should be used to
absorb moisture to prevent impurities from being introduced into
the liquid to be tested. 1/3 of the sensor should be inserted into
the solution to be tested.
The sensor should be washed when not in use, inserted into a
protective sleeve with a 3.5 mol/L potassium chloride solution, or
the sensor inserted into a container with a 3.5 mol/L
potassium chloride solution.
Check if the terminal is dry. If it is stained, wipe it with
absolute alcohol and dry it. Avoid long-term immersion in distilled
water or protein solution and prevent contact with silicone grease.
With a longer sensor, its glass film may become translucent or with
deposits, which can be washed with dilute hydrochloric acid and
rinsed with water. The sensor is used for a long time. When a
measurement error occurs, it must be calibrated with the meter for
calibration.
When the calibration and measurement cannot be performed while the
sensor is being maintained and maintained in the above manner, the
sensor has failed. Please replace the sensor.
Standard Buffer Ph Reference Table
| Temp(°C ) | 4.00 | 4.01 | 6.86 | 7.00 | 9.18 | 10.01 |
| 0 | 4.00 | 4.00 | 6.98 | 7.12 | 9.46 | 10.32 |
| 5 | 4.00 | 4.00 | 6.95 | 7.09 | 9.39 | 10.25 |
| 10 | 4.00 | 4.00 | 6.92 | 7.06 | 9.33 | 10.18 |
| 15 | 4.00 | 4.00 | 6.90 | 7.04 | 9.28 | 10.12 |
| 20 | 4.00 | 4.00 | 6.88 | 7.02 | 9.23 | 10.06 |
| 25 | 4.00 | 4.01 | 6.86 | 7.00 | 9.18 | 10.01 |
| 30 | 4.01 | 4.02 | 6.85 | 6.99 | 9.14 | 9.97 |
| 35 | 4.02 | 4.02 | 6.84 | 6.98 | 9.17 | 9.93 |
| 40 | 4.03 | 4.04 | 6.84 | 6.97 | 9.07 | 9.89 |
| 45 | 4.04 | 4.0 5 | 6.83 | 6.97 | 9.04 | 9.86 |
| 50 | 4.06 | 4.06 | 6.83 | 6.97 | 9.02 | 9.83 |
The actual reading and standard of the instrument sometimes have an
error of ±1 digit.
Quality and service
Quality assurance
- Quality inspection departments have standardized inspection
procedures, with advanced detection equipment and instruments, and
in strict accordance with the test procedures for products that do
72 hours aging test, stability test, not asubstandard products
factory.
- The receiving party directly returns the product batch with a
failure rate of 2% , and all the costs incurred are borne by the
supplier. The reference standard refers to the product description
provided by the supplier.
- Guarantee the quantity of goods and the speed of shipment.
Service commitment
The company provides local after-sales service within one year from
the date of sale, but does not include damage caused by improper
use. If repair or adjustment is required, please return it, but the
shipping cost must be conceited. Damaged on the way, the company
will repair the damage of the instrument for free.
