Hach, PRO-P3A1N, PRO Series Transmitter, pH/ORP
Catalog Number: PRO-P3A1N
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| Width | with back cover |
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| Accuracy | ± 0.1 % of span, at 25 °C |
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| Calibration Method | 2-point Buffer (for pH only) 1-point Sample (for pH or ORP) |
| Communication | 0/4 to 20 mA with 0.004 mA (12-bit) resolution (during calibration, the analog output is automatically held at the last measured value and, upon completion, returned to its active state) |
| Compatible Instruments | Analog pHD, LCP pH or ORP sensors |
| Dimensions (H x W x D) | 95 mm x 95 mm x 60 mm |
| Display | 2-line by 16 character LCD |
| Load | Maximum permissible load dependent on power supply voltage, transmitter hookup arrangement, and wire resistance |
| Material | Enclosure: Polycarbonate |
| Measuring Range ORP | -2100 - 2100 mV |
| Measuring Range pH | Selectable Ranges: -2.0 - 14.0 pH -2.00 - 14.00 pH |
| Measuring Range Temperature | -20 to 200 °C |
| Memory Backup | All user settings are retained indefinitely without battery backup |
| Mounting | Panel, wall, pipe, or integral sensor mounting |
Unless otherwise stated, the minimum order amount is USD 1,000.
For orders below USD 1,000, an additional handling fee may apply, or we may arrange local delivery / local handover where available.
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| Operating Temperature Range |
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| -20 - 60 °C at 0 - 95% RH (non-condensing) |
| Parameter | pH/ORP |
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| Power Requirements (Voltage) | 12 - 30 V DC |
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| Relative Humidity | 0 - 95 % non-condensing |
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| Repeatability | ± 0.05 % of span, at 25 °C |
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| Response Time T90 | 1 - 60 s with output filter setting of zero |
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| Sensitivity | ± 0.05 % of span, at 25 °C |
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| Special Notes | The measured pH (or ORP) and temperature can be displayed separately or together on one screen. Both analog output values are shown together on one screen |
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| Storage Conditions | -30 to 70 °C 0-95% Relative humidity, non-condensing |
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| Temperature Compensation | -10 - 110 °C Automatic with selection for NTC 300 Ω, Pt1000 or Pt100 or manually fixed at a user-entered temperature; additional selectable temperature correction factors (ammonia, morpholine or user-set pH/°C linear slope) |
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| Temperature Drift | 0.02 % of span per °C (zero and span), at 25 °C |
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| Warranty | 12 months |
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| Weight | 0.280 kg |
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| What's included? | Controller, User Manual |
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