The document provides specifications and features of BL 983321-0 and BL 983321-1 panel-mounted TDS indicators and controllers. The products have a measurement range of 0.00 to 19.99 ppm, a resolution of 0.01 ppm, and an accuracy of ±2% f.s. with automatic temperature compensation and manual calibration. They come with the HI 7634-00 EC/TDS probe and adjustable setpoint and dosing time. The power supply is external, with BL983321-0 operating at 12 Vdc and BL983321-1 at 115/230 Vac; 50/60Hz. Users are advised to ensure the suitability of the products for the environment and avoid using them in residential areas to prevent interference with radio and TV equipment. Additionally, the products should not be used when voltages at the measurement surface exceed 24 Vac or 60 Vdc, and measurements in microwave ovens should be avoided.
The BL 983321 series consists of panel-mounted Total Dissolved Solids (TDS) indicators and controllers designed for simplicity in various applications. The instruments feature automatic temperature compensation, single-point calibration, and a multi-color LED status indicator. Two models are available: the BL 983321-0 powered by 12 Vdc and the BL 983321-1 powered by 115 or 230 Vac.
| Range | 0.00 to 19.99 ppm |
|---|---|
| Resolution | 0.01 ppm |
| Accuracy | +M%ts at 20°C/68°F |
| TDS conversion factor | 0.5 |
| Temperature Compensation Range | 5 to 50°C (41 to 122°F) |
| Calibration Method | Manual, through CAL trimmer |
| Dosing Contact Rating | Maximum 2A (fuse protected), 250 Vac, 30 Vdc |
| Power Supply BL983321-0 | 12 Vdc |
| Power Supply BL983321-1 | 115 or 230 Vac |
The instruments are warranted for two years against defects in workmanship and materials when used for their intended purpose.
Ensure the meter is in measurement mode, immerse the probe in a solution with a TDS value higher than 13 ppm, wait for stabilization, then adjust the CAL trimmer to read the correct value.
A blinking red LED indicates an alarm condition, such as when the overtime control system has been exceeded.