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BL931700-1 pH Mini Controller

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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.

BNC Connection

The controller’s high impedance pH input may be used with any pH electrode with a standard BNC connector.

 

BL931700

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.”

BL931700

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.

BL931700

Front View

Installation cut-out dimensions are provided as well as outside panel dimensions.

BL931700

Side View

Adjustable location brackets allow the controller to slide easily and securely into place.
 

 

SKU BL931700-web
Product Name pH Mini Controller with Analog Output - BL931700
Quote Required Yes
pH Range 0.00 to 14.00 pH
pH Resolution 0.01 pH
pH Accuracy ±0.02 pH
pH Calibration manual, 2 points through offset and slope trimmers
pH Input impedence 10¹² Ohm
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
Analog Ouput Signal 4 to 20 mA, accuracy ±0.20 mA, 500 Ω maximum load
Power Supply BL931700-0
Dimensions 83 x 53 x 99 mm (3.3 x 2.1 x 3.9’’)
Weight BL931700-0
Ordering Information BL931700-0 (12 VDC) and BL931700-1 (115/230 VAC) are supplied with mounting brackets, transparent cover and instruction manual.

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