WQ201 pH Sensor Description
WQ201 pH Sensor is a rugged and reliable water pH measuring device. The pH transmitter is mounted on 25 ft of marine grade cable, with lengths up to 500 ft available upon request. The sensor's output is 4-20 mA with a three-wire configuration. The WQ201's electronics are completely encapsulated in marine grade epoxy within a stainless steel housing. The unit also uses a removable shield and replaceable pH sensor element for easy maintenance.
WQ201 pH Sensor Features
| Output | 4-20 mA |
| Range | 0 to 14 pH |
| Accuracy | 2% full scale |
| Maximum Pressure | 40 psi |
| Operating Voltage | 10 to 30 VDC |
| Current Draw | 5.5 mA plus sensor output |
| Operating Temperature | 23° to +131°F (-5° to +55°C) |
| Warm-up Time | 3 seconds minimum |
| Size of Probe |
Open Water: 1¼ in dia. x 10 in long (3.2cm dia. x 25.4cm long) Online: 2 in dia. x 12 in long (5cm dia. x 30.5cm long) |
| Weight | 1 lb (454 g) |
| Order No. | Description |
| WQ201 | pH Sensor for Open Water (includes 25 ft cable) |
| WQ201-O | Online pH Sensor (with 1 inch NPT thread and 25 ft cable) |
| 00-449 | pH Sensor Replacement |
| WQEXC | Extra Sensor Cable, per foot (up to 500 ft) |
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