The BL983318 is a compact, easy to handle, efficient, TDS process controller designed
 for applications where space or cost is important. The device features a large LCD and
 protective casing. Users may choose from automatic or manual dosing modes allowin
g for easy maintenance and troubleshooting. It measures total dissolved solids over 
a range of 0.00 to 10.00 g/L (ppt).
 
Large Clear LCD - A large LCD clearly displays the parameter you are monitoring.
Fire Retardant Casing - Special materials provide additional protection in the event of an 
                                       emergency.  
Splash Resistant Cover - A clear plastic cover protects the face panel from dirt or chemicals.
 

 
Fixed Dosing Relay
The BL983318 features a dosing relay fixed to have the contact closed when above a user 
programmable mV setpoint.
 
Selectable Overdose Protection
The mini controller may be programmed to deactivate a valve, pump, or connected device if its 
activation continues over a selected time; adjustable from 5 to 30 minutes
 
Selectable Control Override
With the flick of a switch, normal “Auto” operation may be overridden turning your connected 
device “Off” from operation or always “On.”
 

 
Fuse Protected Dosing Contacts
The mini controller is protected for up to a 2A load from a connected pump or device.
 
Easy Peripheral Connection
Quick-connect terminal blocks provide for easy connection to power, communication, dosing 
control, or sensors.
 


Front View
Installation cut-out dimensions are provided as well as outside panel dimensions


Side View
Adjustable location brackets allow the controller to slide easily and securely into pla
 
Specifications






Range
0.00 to 10.00 g/L (ppt)

Resolution
0.01 g/L (ppt)

Accuracy (@25°C/77°F)
±2% full scale

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 beta =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 (115V) are supplied with mounting brackets, 
transparent cover and instruction manual.