HANNA instruments HI9913 Industrial pH and Conductivity Controller User Guide
- June 3, 2024
- HANNA instruments
Table of Contents
HANNA instruments HI9913 Industrial pH and Conductivity Controller
Industrial GradepH and Conductivity Controller
with Proportional Control of Fertilization
- Alarm
- The alarm Is activated If pH falls below the set point by the user selectable interval (0.5 to 2.S pH). or conductivity exceeds the set point by more than the user selectable interval{O to2.0 mS/cm) or due to ove1dox1ge
- ATC
- Automatic temperature compensation
Hl9913 Is a 2-in-l pH and conductivity controller engineered f.or dosage of fertilizer solutions in hydroponic-sand agriculture.
HI9913 measures pH from 0 to 14 and EC from 0 to 10 mS/cm, Two separate set points can beuseradjustedfrom4 to7pHand0to6mS/ cm, Therelaysareactivatedwhen pH exceeds the set point or conduclivity falls below the desired value. Two pumps or electrovalves can be wired directly to the controller and be powered through the 1e,minal. Theopera10, can a-d1ust two Independent proportional settings for pH and c-0nductivlty. The time cycJe is adjustable from 0 to 90 seconds. whne the proportional band is O to 2 tor both pH and EC A matching pin/ground probe can be connected to the appropriate terminals to etuninate mteifo1ence aod prolong the pH elec1rod1rs life.
Hl9913 provides for an alarm relay which is activated in several circumstances. These include when the pH is below the set point by the operatot-adjustabfe rhrnshold of O.S to 2.S pH, or EC exceeds th-e set point by a value in th-e 0.5 to2.S mS/cmrange. The alarm goes off if the pH and/or conductivity are not corrected within the operator·determined time frame of 1 to 10 minutes. The alarm can be turned off during maintenance.
Fertilization status can be ascenained from a distance through dosage and alarm LED’s,
Hl9913 accepts pH electordes with BNC and conductivity probes with DlN connectors.
Specifications
| Range | 0.00 to 14.00 pH; 0.00 to 10.00mS/cm |
|---|---|
| Resolution | 0.01 pH; 0.01mS/cm |
| Accuracy (@25°C/77°F) | ±0.02 pH; ±2%f.s. EC |
| Input Impedance | 1012 Ohm |
| Calibration | through “OFFSET” and “SLOPE”trimmers for pH, and “ZERO CAL’ and |
“SLOPE CAL” for EC
Set point| from 4.0 to 7.0 pH and 1.0 to 4.0 mS/cm (EC)
EC Temperature Compensation| automatic, 0 to 50°C (32 to 122°F) with 0=2%/°C
Proportional Control| two independent controls: pH from 0.0 to 2.0 and
conductivity (EC) from 0.0 to 2.0 mS/cm with two separate time cycles from 0
to 90 seconds
Alarm Contact| terminals can be configured as normally open or normally closed
(isolated output max. 2k max. 240V, resistive load, 1,000,000 strokes). The
alarm is activated if pH falls below the set point by the user selectable
interval (0.5 to 2.5 pH), or conductivity exceeds the set point by more than
the user selectable interval (0.5 to 2.5 mS/cm) or due to overdosage
Dosing Terminals| two sets of independent terminals (115 to 240V, Max.2A,
1,000,000 strokes) are activated whenever pH exceeds the pH set point and/or
conductivity falls below the EC set point
Probe| any combination pH electrode with a universal BNC connector and Hanna
conductivity four-ring potentiometric probe with built-in temperature sensor
and DIN connector (not included)
Power Supply| ±10% 115 VAC or 230 VAC; 50/60 Hz
Environment| -10 to 50°C (14 to 122°F); RH max 95% non-condensing
Case Material| fiber-reinforced, self-extinguishing ABS
Dimensions| 221 x 181 x 86 mm (8.7 x 7.1 x 3.4″)
Weight| 1.6 kg (3.5 lb.)
Ordering Information| HI9913-1 (115V) and HI9913-2 (230V) are
supplied complete with instructions.