Adjustable Dosing Relay
The BL932700 features a dosing relay which may be configured to dose above or below 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.”
Analog Output Communication
The BL932700 features a 4 - 20 mA analog output for connection to a data logger, chart recorder, or other device.
External Disabling Feature
A normally open contact may connect to a level controller or flow monitor. This safety feature may be used to prevent continuous dosing in the event of specific or undesired system conditions.
Matching Pin Connection
An included matching pin option helps protect the sensor from ground loop effects that may lead to erratic readings or system damage.
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 ±1000 mV Resolution 1 mV Accuracy (@25°C/77°F) ±5 mV Calibration manual, with CAL trimmer Dosing Relay maximum 2A (fuse protected), 250 Vac, 30 VDC Dosing Selection reducing or oxidizing, selectable on the back panel
contact open=reductant dosage=relay ON if measurement > setpoint
contact closed=oxidant dosage=relay ON if measurement < setpoint
Setpoint adjustable from -1000 to 1000 mV Overtime adjustable, typically from 5 to approximately 30 minutes Input Impedance 10¹² Ohm Analog Output 4 to 20 mA, accuracy ±0.20 mA, 500 Ω maximum load Power Supply BL932700-0: 12 VDC adapter (included);
BL932700-1: 115/230 VAC; 50/60Hz
Dimensions 83 x 53 x 99 mm (3.3 x 2.1 x 3.9’’) Weight BL932700-0: 200 g (7.1 oz.)
BL932700-1: 300 g (10.6 oz.)
Ordering Information BL932700-0 (12 VDC) and BL932700-1 ( 115/230V) are supplied with mounting brackets, transparent cover and instruction manual.