Description
The Hanna BL931700 pH mini controller is a compact, panel-mounted device with a unique 4-20 mA analog output for recorder connection, ideal for continuous pH monitoring and control in space- or cost-limited applications. This advanced Hanna BL931700 pH mini controller offers precise two-decimal display, manual calibration, and configurable dosing for acid or alkaline solutions
| Specification | Detail |
| SKU | BL931700 |
| pH Range | 0.00 to 14.00 pH |
| pH Resolution | 0.01 pH |
| pH Accuracy (@25°C/77°F) | ±0.02 pH |
| Calibration | manual, 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 |
| Recorder Output | 4 to 20 mA, accuracy ±0.20 mA, 500 Ω maximum load |
| Input Impedance | 10^12 Ohm |
| 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 | Supplied with mounting brackets, transparent cover and instruction manual. |
| Recommended Probe | HI1001 PVDF body pH electrode with 1/2in. NPT thread, BNC connector and 3 m (9.8′) cable for continuous flow-thru monitoring (not included). |
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