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differential pH probe
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SD7420CD Differential pH Probe with Direct 4-20mA Output

$655.00

Out of stock

Applications such as pulp and paper or dye manufacturing and industrial wastewater treatment may expose pH probes to harsh conditions and chemicals. A differential pH probe utilizes a special measurement technique, which extends the working lifetime of the sensor in challenging applications. Replacing the sensor reference (salt bridge) and buffered electrolyte solution can extend working lifetime, which saves timely, costly replacements. Our SD7420CD features differential sensor technology with a direct 4-20mA output, so it can be integrated into control systems without the use of a transmitter or controller.

  • Utilizes differential measurement technology for extended sensor lifetime
  • No transmitter or controller required
  • Easy and infrequent maintenance
  • Constructed of chemically-resistant Ryton® Polyphenylene Sulfide (PPS)
  • Built-in automatic temperature compensation
  • Two Year limited Warranty

Out of stock

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Sensorex SKU: SD7420CD

Product Description

Applications such as pulp and paper or dye manufacturing and industrial wastewater treatment may expose pH probes to harsh conditions and chemicals. A differential pH probe utilizes a special measurement technique, which extends the working lifetime of the sensor in challenging applications. Replacing the sensor reference (salt bridge) and buffered electrolyte solution can extend working lifetime, which saves timely, costly replacements. Our SD7420CD features differential sensor technology with a direct 4-20mA output, so it can be integrated into control systems without the use of a transmitter or controller.

  • Reliable measurement performance: True differential pH measurement technology using solution ground
  • High accuracy measurements: Differential measurement technique virtually eliminates ground loop measurement error
  • No transmitter or controller required: Direct 4-20mA output for simple integration
  • Resists aggressive chemicals: Constructed of durable Ryton® Polyphenylene Sulfide (PPS)
  • Automatic temperature compensation: Accurate measurements even with rapid temperature changes
  • Two Year limited Warranty: We stand behind our products with the Sensorex guarantee

 

  • Measurement Range: 0-14 pH (low NA+ ion error)
  • Temperature Range: 0-100⁰ C
  • Pressure Range: 0 – 100 PSIG @ 40⁰ C (PVC fitting); 0 – 100 PSIG @ 60⁰ C (CPVC fitting); 0 – 100 PSIG @ 100⁰ C (stainless steel fitting);
  • Body Construction: Ryton Polyphenylene Sulfide (PPS)
  • Response Time: 95% in 1 second
  • Isopotential: 7.00 pH
  • Offset: 0.2%
  • Span: > 97%
  • Temperature Compensation: 300Ω NTC
  • Connector: Tinned Leads
  • Cable Length: 20 feet (6 meters)
  • Power Supply (not included): 12- 30 V DC ( >24V DC recommended)
  • Installation: 1 1/2″ NPT
  • Warranty: Two year limited warranty

Replaceable Salt Bridge for SD7000 Series pH and ORP Sensors

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Specification Sheet for SD7420 Series Differential pH and ORP Sensors with Direct 4-20mA Output

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