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BL931700 pH Mini Controller

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. 230V

Brand: Hanna

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Product CodeProduct Product Description Price (Excl gst) Qty Add
HA-BL931700-1 BL931700 pH Mini Controller (230V) BL931700 pH Mini Controller (230V) Login for price  

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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.

Range 0.00 to 14.00 pH
Resolution 0.01 pH
Accuracy (@25°C/77°F) ±0.02 pH
Calibration manual, 2 points through offset and slope trimmers
Dosing Relay maximum 2A (fuse protected), 250 Vac, 30 VDC
Dosing Selection acid or alkaline
contact open=acid dosage=relay ON if measurement > setpoint
contact closed=alkaline dosage=relay ON if measurement < setpoint
Setpoint adjustable from 0 to 14 pH
Overtime adjustable, typically from 5 to approximately 30 minutes
Input Impedance 10¹² Ohm
Analog Output 4 to 20 mA, accuracy ±0.20 mA, 500 ¥ maximum load
Power Supply BL931700-0: 12 VDC adapter (included);
BL931700-1: 115/230 VAC; 50/60Hz
Dimensions 83 x 53 x 99 mm (3.3 x 2.1 x 3.9’’)
Weight BL931700-0: 200 g (7.1 oz.);
BL931700-1: 300 g (10.6 oz.)
Ordering Information BL931700-0 (12 VDC) and BL931700-1 (230V) are supplied with mounting brackets, transparent cover and instruction manual.
Warranty 2 years

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