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Home > Hydroponics > Panel/Wall Mounted Controllers
The HI 98143 series is designed to accept signals directly from a pH electrode and a conductivity probe at the same time.
Direct connection of the probes to the transmitter assure a positive electrical connection with no signal loss. This transmitter is ideal for remote process control applications.
Four models are available, transmitting a 0-1 V, 0-4 V or 4-20 mA signal. The output signals are proportional to the input signals but independent of changes in load or cable capacitance. Compensation for the effects of temperature for EC measurements are performed by the transmitters’ Automatic Temperature Compenstion circuitry.
The transmitter can be connected to any pH or conductivity controller, recorder, PC or any data monitoring device that accepts 0 to 1 V, 0 to 4 V or 4 to 20 mA input. HI?98143 is an ideal tool for applications that require the monitoring of both pH and conductivity at the same time.
Order Information:
HI 98143-22 with 4-20 mA isolated output (specific for the HI 8000 controllers), is supplied with instructions.
| Range | pH | 0 to 14 pH |
| EC | 0 to 10 mS/cm | |
| Accuracy @ 20°C | pH | ±0.5% f.s. |
| EC | ±2% f.s. | |
| Calibration | pH | manual, 2 point, through offset and slope trimmers |
| EC | manual, 2 point, through 0 and 5 mS/cm trimmers | |
| Temperature Compensation (EC) |
automatic, 0 to 60°C (32 to 132°F) with ß=2%/°C | |
| Output (isolated) | 4-20 mA | |
| pH Electrode | HI 1001 pH electrode (suggested, not included), HI 1283 matching pin (not included) | |
| EC Probe | HI 3001 (not included) with cell constant 2.1 | |
| Casing | IP 54 | |
| Environment | 0 to 50°C (32 to 122°F); RH max 95% non-condensing | |
| Dimensions | 160 x 105 x 31 mm (6.3 x 4.1 x 1.2’’) | |
| Weight | 280 g (9.9 oz.) |
| Solutions | |
|---|---|
| HI 7004/1L | 4.01 pH Buffer Solution 1 x 1 L bottle |
| HI 7007/1L | 7.01 pH Buffer Solution 1 x 1 L bottle |
| HI 7010/1L | 10.01 pH Buffer Solution 1 x 1 L bottle |
| HI 7039L | 5000 µS/cm EC Solution, 500 mL Bottle |
| Accessories | |
| HI 7855/1 | Connection Cable with Screw and BNC Connectors, 1 m |
| Probes | |
| HI 3001 | Flow-thru Conductivity Probe with 3 m cable |
Manual: (Download)
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