Online PH Controller is one of the intelligent online chemical analysis instruments. It can continuously monitor the data and realize remote transmission monitoring and recording through the transmission output connection recorder. It can also be connected to the RS485 interface . It can be easily connected to the computer through the MODBUS-RTU protocol. Monitoring and recording.
4.3 inch LCD display
Good anti-interference performance
Manual/automatic temperature compensation
User settings: Buzzer, LCD backlight, password, pH/ORP electrode, manual/automatic temperature compensation, pH/ORP calibration, pH/ORP modification, pH/ORP high/low alarm, output signal 4-20mA and RS485, etc.
Data record function
Automatic cleaning function
Measuring range | pH: 0~14pH, ORP: -1000~1000mV (-2000~2000mV need customization) |
Accuracy | ±0.02pH, ±1mV |
Resolution | ±0.01pH, ±1mV |
Stability | ≤0.02pH/24h, ≤3mV/24h |
Input impedance | ≥10^12Ω |
Temperature range | -10~+130℃ (NTC 10K or PT1000, accuracy: ±0.5℃) |
Temperature compensation | -10~+130℃ manual/automatic |
Output signal * | Isolated 4-20mA signal (error: ±0.1%, under maximum loop resistance 750Ω) |
Communication function * | RS485 with standard MODBUS-RTU (Now RS485 software is free.) |
Power supply | AC 220V±10%, 50Hz/60Hz |
Alarm relay | 2 alarm relays: AC 250V/3A Function: high alarm, low alarm |
Definition of the ports:
INPUT: Measuring terminal of the pH/ORP/Antimony electrode
NC: Undefined
REF: Reference terminal of the pH/ORP/Antimony electrode
NC: Undefined
TEMPA: Temperature compensation terminal A
TEMPB: Temperature compensation terminal B
TEMPC: Temperature compensation terminal C
RS485 (A+): RS485 communication interface A+
RS485 (B-): RS485 communication interface B-
0/4-20mA (A+): A current output terminal +
0/4-20mA (A/B-): A/B current output terminal -
0/4-20mA (B+): B current output terminal +
WASH: Cleaning device relay
WASH: Cleaning device relay
REL B: Alarm relay B
REL B: Alarm relay B
REL A: Alarm relay A
REL A: Alarm relay A
POWER N: AC 220V/110V neutral wire
POWER L: AC 220V/110V live wire
-Manuals
Online PH Controller
-Data sheet