The BL931700 is a compact single setpoint pH controller designed for applications where space and/or cost are important. It’s adjustable dosing relay may be configured to dose above or below a pH setpoint. Users may choose from automatic or manual dosing modes allowing for easy maintenance and troubleshooting. The device contains a high impedance pH input and may be used with any pH electrode that has a standard BNC connector.
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.
The controller’s high impedance pH input may be used with any pH electrode with a standard BNC connector.
Enhanced Accuracy & Precision
The BL931700 model offers a manual two-point calibration with pH values displayed out to two decimal places.
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.
Adjustable Dosing Relay
The BL931700 features a dosing relay which may be configured to dose above or below a user programmable pH 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 BL931700 features a 4 - 20 mA analog output for connection to a data logger, chart recorder, or other device.
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.
Fuse Protected Dosing Contacts
The mini controller is protected for up to a 2A load from the connected pump or device.
Easy Peripheral Connection
Quick-connect terminal blocks provide for easy connection to power, communication, dosing control, or sensors.
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..
0.00 to 14.00 pH
manual, 2 points through offset and slope trimmers
pH Input impedence
pH Dosing Relay
maximum 2A (fuse protected), 250 Vac, 30 VDC
pH Dosing Set Point
adjustable from 0 to 14 pH
Over Dosing Control
adjustable, typically from 5 to approximately 30 minutes