The integrated explosion-proof pH meter is widely used for online monitoring of conductivity values in chemical, metallurgical, water treatment, pharmaceutical, biochemical, electronic, electroplating, printing and dyeing, chemical, food, and tap water industries. Adopting explosion-proof cast aluminum sealed shell, the protection level can reach IP67, LED display, two-wire isolated current output, especially suitable for industrial sites with harsh environments, the presence of explosive gases, and explosion-proof requirements.

characteristic:
1. Two line system integration
2. Adopting a single-chip microcomputer with low power consumption, high performance, high stability, and high reliability
3. High measurement accuracy, fast response speed, small size, easy installation and maintenance
4. LCD display, buttons can display conductivity value and temperature value separately
5. Electrode K=0.01 K=0.1 K=1.0 that can be matched with three electrode constants
6. Intrinsic safety explosion-proof, explosion-proof grade Exia IIB T4 or isolated explosion-proof, explosion-proof grade Exd IIB T4
7. Parameter power-off protection.
8. Automatic switching of four ranges.
9. Automatic temperature compensation.
10. 4-20mA isolated current output.

Technical indicators:
(1) Working conditions
a. Environmental temperature: 0-55 ℃
b. Relative humidity: less than 85%
c. Power supply: 24VDC
d. Temperature of the tested solution: 0-60 ℃.
(2) Conductivity range: K=0.01 electrode: 0～20.0μS/cm
K=0.1 electrode: 0-200.0 μ S/cm K=1.0 electrode: 200～2000μS/cm
Temperature range: 0～100℃
(3) Basic error of conductivity measurement: ± 1% F.S
Basic temperature measurement error: ± 0.5 ℃
(4) Temperature compensation range and influence error: 0-60 ℃, ± 0.5% F S/10℃
(5) Isolation current output and basic error: 4～20mA（RL≤500Ω）±0.5％F. S