Overview
PHG-3081 industrial pH meter is our latest generation of microprocessor-based instrument, with English display, menu operation, a high intelligent, multi-function, high measurement performance, environmental adaptability and other characteristics. It is a highly intelligent online continuous monitoring instrument, integrate with the sensor and the second meter. Can be equipped with three composite or two composite electrodes to meet a variety of sites. Can be widely used for continuous monitoring of PH value for thermal power, chemical fertilizer, metallurgy, environmental protection, pharmaceutical, biochemical, food and water and other solution.
Features
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Intelligent: This industrial PH meter adopts high-precision AD conversion and single chip microcomputer
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processing technologies and can be used for the measurement of the PH values and temperature, automatic
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temperature compensation and self-checking.
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Reliability: All the components are arranged on one circuit board. No complicated functional switch, adjusting
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knob or potentiometer arranged on this instrument.
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Double high impedance input: The latest components are adopted; The impedance of the double high impedance
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input can reach as high as l012Ω. It has strong interference immunity.
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Solution grounding: This can eliminate all the disturbance of the ground circuit.
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Isolated current output: Optoelectronic isolating technology is adopted. This meter has strong interference
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immunity and the capacity of long-distance transmission.
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Communication interface: it can be easily connected to a computer to perform monitoring and communication.
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Automatic temperature compensation: It performs automatic temperature compensation when the temperature is
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within the range of 0~99.9℃.
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Water proof and dust-proof design: Its protection grade is IP54. It is applicable for outdoor use.
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Display, menu and notepad: It adopts menu operation, which is like that in a computer. It can be easily
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operated only according to the prompts and without guidance of the operation manual.
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Multi-parameter display: The PH values, input mV values (or output current values), temperature, time and status
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can be displayed on the screen at the same time.
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Technical Parameters
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1. Measuring range: PH value: 0~14.00pH; division value: 0.01pH
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Electric potential value: ±1999.9mV; division value: 0.1mV
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Temperature: 0~99.9℃; division value: 0.1℃
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2. Range for automatic temperature compensation: 0~99.9℃, with 25℃ as the reference temperature, (0~150℃ for Option)
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3. Water sample tested: 0~99.9℃，0.6Mpa
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4. Automatic temperature compensation error of the electronic unit: ±0 03pH
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5. Repeatability error of the electronic unit: ±0.02pH
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6. Stability: ±0.02pH/24h
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7. Input impedance: ≥1x1012Ω
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8. Clock accuracy: ±1 minute/month
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9. Isolated current output: 0～10mA(load <1 5kΩ), 4～20mA(load <750Ω)
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10. Output current error: ≤±l％FS
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11. The data storage capacity: 1 month (1 point/5 minutes)
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12. High and low alarm relays: AC 220V, 3A
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13. Communication interface: RS485 or 232 (optional)
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14. Power supply: AC 220V±22V, 50Hz±1Hz, 24VDC(optional)
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15. Protection grade: IP54, Alluminium shell for outdoor use
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16. Overall dimension: 146 (length) x 146 (width) x 150 (depth) mm;
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dimension of the hole: 138 x 138mm
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17. Weight: 1.5kg
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18. Working conditions: ambient temperature: 0~60℃; relative humidity <85％
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19. It can be equipped with a 3-in-1 or 2-in-1 electrode.
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Conductivity Meter
Laboratory Water Analysis
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