Brand：Erun
Conductivity TDS resistivity water quality on-line analyzer
Model：ERUN-SZ1-A-A4
Conductivity/TDS/Resistivity (frequency method)
This product is an on-line intelligent conductivity/TDS/resistivity meter independently developed by our company. It adopts high-performance CPU chip and SMT chip technology to complete the measurement of conductivity/TDS/resistivity and temperature, temperature compensation, and automatic conversion of range, with high precision and good repeatability. Widely used in thermal power, chemical fertilizer, metallurgy, environmental protection, pharmaceutical, biochemical, food and tap water and other solutions in the conductivity value / TDS / resistivity continuous monitoring.
Mounting method: | Disk mounted (recessed) |
Gauge Size: | 100*106*168mm, opening size: 92*92mm |
Power supply: | AC220V，DC24V/12V |
Relay: | 2 sets of relays, divided into high and low point alarm control Load AC220V/3A |
Analog output: | 4～20mA (4-wire), Maximum load 750Ω |
Digital Interface: | RS485 (ModBus protocol) |
Protection Rating: | IP65 |
Material: | ABS |
| Resistance measurement range: | 0.01 Electrode 50～20000kΩ-cm 0.1 Electrode 5～20000kΩ-cm 1.0 Electrode 0.5 to 20000kΩ-cm 10.0 Electrode 0.05～20000kΩ-cm (Other ranges on request) |
| Conductivity measurement range: | 0.01 Electrode 0 ~ 20.00μS-cm 0.1 Electrode 0 ~ 200.0 μS-cm-1 1.0 Electrode 0 ~ 2000 μS-cm-1 10.0 Electrode 0 ~ 20.00 mS-cm-1 (Other ranges on request) |
| TDS measurement range: | 0.01 Electrode 0~10 ppm 0.1 Electrode 0~100 ppm 1.0 Electrode 0~1000 ppm 10.0 Electrode 0-10000ppm (Other ranges on request) |
Resolution: | 0.01kΩ·cm |
Precision: | ±2.0 %(FS) |
Automatic temperature compensation: | 0~100℃ NTC10K, based on 25℃, temperature compensation coefficient can be corrected. |
Schematic diagram of piping installation: | Schematic diagram of sensor dimensions: |
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1、History curve (optional): It can automatically record the history curve of 50 groups of measurement data respectively, and can query the data and set the sampling time. | 2、Watchdog function to ensure that the meter will not die. |
3、with RS-485 communication interface (MODBUS protocol partially compatible), can be converted to RS-232. | 4、Power down protection＞10 years. |
5、 large screen dot matrix LCD, Chinese menu operation, multi-parameter simultaneous display: detection value, temperature, output current, alarm points and other simultaneous display, intuitive and easy to read. | 6、Automatic identification of standard liquid, can restore factory settings. |
7、can store 50 measurement data respectively, users can record the measurement data as needed. | 8、Automatic temperature compensation function. |
9、The detection value corresponding to the 4 to 20 mA current output can be set arbitrarily. | 10、It can be equipped with our company's upper computer online acquisition software for data acquisition and processing. |
