Adjustable Dry Contact Dosing Relay
The BL983318 features a dosing relay that is activated when the reading is above a user programmable set point.
Programmable Overdose Protection
For enhanced safety the mini controller can be programmed to deactivate the dosing relay if the set point is not reached within a specified time interval. The overdosing timer is programmable from 5 to 30 minutes or disabled.
Relay Control Override
With the flick of a switch the mini controller’s relay can be disabled (Off), placed in control (Auto), or be activated for manual operation (On) which is useful for priming a dosing pump.
Multicolor LED Indicator
Multicolor LED indicator allows an operator to quickly check the status of the controller.
- Green = Meter in measurement mode and reading is below the set point.
- Orange/Yellow = Reading is above the set point and the relay is activated.
- Blinking Red = Indicates an alarm condition such as when the maximum dosing time has been exceeded.
Fuse Protected Dosing Contacts
The relay dosing contact is rated for up to a 2A load and is fuse protected.
Labeled Termination Connections
Quick-connect terminal blocks are clearly labeled for easy connection to power, conductivity probe and relay that can be used to operate a dosing pump, valve, audible alarm, or light.
1/2″ NPT Male Threaded Amperometric Probe for Mounting In-line*
The BL983318 mini controller uses the HI7632-00 conductivity probe that is available with different cable lengths.
*HI7632-00 is not included and must be ordered separately
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Front ViewInstallation cut-out dimensions are provided as well as outside panel dimensions. |
Side ViewAdjustable location brackets allow the controller to slide easily and securely into place. |
| Specification Name | Detail |
|---|---|
| SKU | BL983318 |
| TDS Range | 0.00 to 10.00 g/L (ppt) |
| TDS Resolution | 0.01 g/L (ppt) |
| TDS Accuracy (@25°C/77°F) | ±2% F.S. |
| TDS Conversion Factor | 0.5 |
| Temperature Compensation | automatic from 5 to 50°C (41 to 122°F) with ß=2%/ºC |
| Calibration | manual, with CAL trimmer |
| Dosing Relay | maximum 2A (fuse protected), 250 Vac, 30 VDCcontact closed when measure > setpoint |
| Setpoint | adjustable from 0 to 10 ppt (g/L) |
| Overtime | adjustable, typically from 5 to approximately 30 minutes |
| Power Supply | BL983318-0: 12 VDC adapter (included)BL983318-1: 115/230 VAC; 50/60Hz |
| Dimensions | 83 x 53 x 99 mm (3.3 x 2.1 x 3.9’’) |
| Weight | BL983318-0: 200 g (7.1 oz.)BL983318-1: 300 g (10.6 oz.) |
| Ordering Information | Supplied with mounting brackets, transparent cover and instruction manual. |
| Recommended Probe | HI7632-00 EC/TDS probe with internal temperature sensor and 2 m (6.6’) cable (not included). |
