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 active.
- 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 conductivity probe that is available with different cable lengths.
*HI7632 is not included and must be ordered separately
Installation cut-out dimensions are provided as well as outside panel dimensions.
Adjustable location brackets allow the controller to slide easily and securely into place..
Range 0.00 to 10.00 g/L (ppt) Resolution 0.01 g/L (ppt) Accuracy (@25°C/77°F) ±2% f.s. TDS Conversion Factor 0.5 Calibration manual, with CAL trimmer Dosing Relay maximum 2A (fuse protected), 250 Vac, 30 VDC Dosing Selection contact closed when measure > setpoint Setpoint adjustable from 0 to 10 ppt (g/L) Overtime adjustable, typically from 5 to approximately 30 minutes Temperature Compensation automatic from 5 to 50°C (41 to 122°F) with β =2%/oC Power Supply models “-0”: 12 VDC adapter (included)
models “-1”: 115/230 VAC; 50/60Hz
Dimensions 83 x 53 x 99 mm (3.3 x 2.1 x 3.9’’) Weight models “-0”: 200 g (7.1 oz.) models “-1”: 300 g (10.6 oz.) Ordering Information BL983318-0 (12 VDC) and BL983318-1 (115/230 VAC) are supplied with mounting brackets, transparent cover and instruction manual.