pH Mini Controllers BL931700
Quantity
- It's easy to handle
- Fire retardant casing
- Selectable overdose protection system
- Splash resistant cover
This versatile controller is ideal for a wide variety of applications, such as textiles, papers, photographic solutions, plating baths, chemicals and water treatment.This
BL 931700 is provided with a selectable set point for acid or basic dosage.
Measurements are directly taken from a pH electrode in the range from 0 to 14 with a 0.01 pH resolution. Accuracy is ensured by two point calibration, performed manually through trimmers on the front panel.
Users can choose automatic or manual dosing mode with a switch on the front panel. Manual control is particularly useful during maintenance operations, because
it permits operators to enable or disable the dosing relay according to need. The overtime control system advises users when the relay is active for too long, helping to prevent overdosing.
In addition, this model features a 4-20 mA analog output for recorder connection.
Order Information:
BL 931700-0 (12 VDC) and BL 931700-1 ( 115/230V) are supplied with mounting brackets, transparent cover and instruction manual.
Specifications
| Range | 0.00 to 14.00 pH |
| Resolution | 0.01 pH |
| Accuracy @ 25°C | ±0.02 pH |
| Calibration | manual, 2 point, with offset and slope trimmers |
| Dosing Relay | max 2A (fuse protected), 250 Vac, 30 Vdc |
| Dosing Selection |
acid or alkaline contact open=acid dosage=relay ON if measurement > set point contact close=alkaline dosage=relay ON if measurement < set point |
| Setpoint | adjustable from 0.00 to 14.00 pH |
| Overtime | adjustable, typically from 5 to approx. 30 minutes |
| Recorder Output | 4-20 mA, accuracy ±0.20 mA, 500 Ohm max load |
| Input Impedance | 102 Ohm |
| Power Supply |
BL931700-0: 12 VDC adapter (included); BL931700-1: 115/230 VAC; 50/60Hz |
| Dimensions | 79 x 49 x 95 mm (3.1 x 1.9 x 3.7’’) |
| Weight |
BL931700-0: 200 g (7.1 oz.); BL931700-1: 300 g (10.6 oz.) |
| Warranty | 2 years |
