Hanna Instruments Groline HI981413, Инструкция по эксплуатации

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6
SPECIFICA
TIONS
4. SPECIFICATIONS
4.1. HI981413 NUTRIENT DOSING SYSTEM
Range
EC 0.00 to 10.00 mS/cm
TDS
0 to 9900 ppm, depends on TDS factor
i.e. with TDS factor 0.5, range 50 to 5000 ppm
with TDS factor 0.7, range 70 to 7000 ppm
Temperature* -5.0 to 105.0 °C (23.0 to 221.0 °F)
Resolution
EC 0.01 mS/cm
TDS 1 ppm
Temperature 0.1 °C (0.1 °F)
Accuracy
@ 25 °C / 77 °F
EC
±0.10 mS/cm (0.00 to 5.00 mS/cm)
±0.20 mS/cm (5.00 to 10.00 mS/cm)
TDS
± 2% F.S.
±50 (0 to 2500 ppm) with TDS factor 0.5
±100 (2500 to 5000 ppm) with TDS factor 0.5
Temperature ±0.5 °C (±0.9 °F)
Calibration
• User calibration:
automatic, one-point with standard solution (1.41 or 5.00 mS/cm)
• Process calibration:
single point, adjustable (±0.50 mS/cm around measured value)
• The corresponding value in TDS, depends on TDS factor
Temperature Compensation Automatic
EC to TDS Conversion Factor TDS factor selectable from 0.45 to 0.99
High or Low Mode
Operation
Pump Control
• On/Off control using adjustable set point
(0.10 to 10.00 mS/cm; 45 to 9900 ppm, depends on TDS factor)
with adjustable hysteresis
(0.05 to 0.50 mS/cm; 23 to 495 ppm, depends on TDS factor)
• Proportional control using adjustable set point
(0.10 to 10.00 mS/cm; 45 to 9900 ppm, depends on TDS factor)
with adjustable proportional band
(0.05 to 1.00 mS/cm; 23 to 990 ppm,depends on TDS factor)
• Startup delay timer at power-on (0 to 600 sec.)
• Pump flow control 0.5 to 3.5 Liter/hour (0.13 to 0.92 Gallon/hour) and
maximum output pressure 1 atm (14 psi)
• Manual control for pump priming (defined in setup)
*
The range may be limited by the probe’s limits.