<p class="lr1_gs">The BSQ-MINI water quality transmitter module is an optimized version of the previous BSQ-2019 model, with the following main features:<br /> 1.Removal of the previous LCD display, replaced by dual-color LED lights to indicate functional status;<br /> 2.Volume reduced by 60% compared to BSQ-2019;<br /> 3.Higher cost-performance ratio;<br /> 4.Automatic recognition of conductivity calibration waves for calibration. </p>

■ Overview:

The EC/ER/pH series transmitters are mainly used for transmitting signals from water quality monitoring sensors. They amplify the weak signals output by the sensors and transmit them via 4-20mA, RS485, or TTL levels, facilitating communication with PLCs, configuration software, microcontrollers, etc. The communication protocol uses the standard MODBUS RTU protocol:
This product is widely used in industrial sectors such as metallurgical manufacturing, power, light industry, textiles, water treatment equipment, water supply networks, and scientific research.

Note: The EC/ER transmitter module is a universal module, and the PH module is another universal module. Both modules have the same appearance but different hardware, distinguished by panel markings. Use with caution. One transmitter module can only be set to one electrode input.

■ Transmitter Series Description:

Note: One transmitter module can only be paired with one electrode. EC is a separate module, and PH is another module.
①: EC conductivity transmitter; range: 0~2000us/cm²; optional 0-4000uS, 0-10.00mS, 0-20.00mS, 0-200.0mS;
②: ER resistivity transmitter; range: 0~18.2MΩ
③: pH acidity transmitter; range: 0~14.00 pH

■ EC Conductivity Technical Specifications

Range selection

● Stability: ±2×10-3FS/24h
● Matching electrode: Standard 1.0cm-1 ABS plastic platinum black electrode; other specifications optional;
● Electrode thread: 1/2"NPT
● Contact length: Insert type standard 5 meters; quick-connect type standard 1.5 meters;
● Medium temperature: 0 ~ 50℃
● Electrode withstand pressure: 0.5Mpa
● Temperature compensation element: NTC10K
● Temperature compensation: Automatic compensation based on 25℃

■ Resistivity - Technical Specifications:

Measurement range: 0~18.25MΩ;
Accuracy: 2.0%/FSD;
Stability: ±2×10-3FS/24h;
Matching electrode: Standard 0.05cm-1 316L stainless steel electrode, optional insert type or quick-connect type;
Electrode thread: 1/2"NPT;
Cable length: Insert type standard 5 meters; quick-connect type standard 1.5 meters;
Medium temperature: 0~50℃;
Electrode withstand pressure: 0.5Mpa;
Temperature compensation element: NTC10K;
Temperature compensation: Automatic compensation based on 25℃.

■ pH (Acidity) - Technical Specifications:

Measurement range: 0~14.00;
Accuracy: 2.0%/FSD;
Stability: ±2×10-3FS/24h;
Matching electrode: Online pH electrode ABS two-composite electrode (2-wire system);
Cable length: Standard 5 meters;
Electrode thread: 3/4NPT pipe thread;
Temperature compensation element: NTC10K;
Medium temperature: 0~50℃;
Temperature compensation: Manual or automatic compensation based on 25℃;
Calibration method: Three-point calibration, pH4.00, pH6.86, pH9.18.

■ Other Related Technical Specifications

Output current: 4~20mA/optional; 1-5V/2-10V; 4-20mA corresponding range can be set, default is 0~full scale;
Relay output: High/low frequency relay alarm output can be set, contact current 24V/3A, 220V/2A; (passive dry contact);
Power supply: DC12V-28V, 24V current <0.1A;
Environmental conditions: (1) Temperature 0~50℃ (2) Humidity ≤85%RH
Dimensions: 122×72×45mm (L×W×H);
Installation method: Rail installation;

■ Transmitter Outline Diagram

■ Wiring notes:

Note: 4-20mA output wiring diagram