Call Us
Now
Cart  |  Contact  |  Help  |  auinfo@dwyeromega.com  | 
1800 106 210  | 
Toll-Free in Australia: 1800 106 210
International+65 6415 5353

Differential pH or ORP Probes

PHETX-600 Series

Differential pH or ORP Probes | PHETX-600 Series

Differential pH or ORP Probes

PLACE ORDER
  • Integral 2-Wire 4 to 20 mA Transmitter
  • Accurate Differential Measurement
  • Eliminates Ground Loop Interference
  • Built-In Pre-Amp Supports Up to 914 m (3000') Sensor-to-Analyzer Distance
  • 4.6 m (15') Standard Cable Length
  • Automatic Temperature Compensation on pH Versions
Industrial pH Instrumentation and Electrodes - View related products

Description

OMEGA™ pH and ORP differential probes stay in service and provide accurate measurements under conditions that often render conventional pH probes inoperable. These probes, come with an integral encapsulated 4 to 20 mA 2-wire transmitter to feed directly to a PLC or a DCS.
The PHETX-600 and ORETX-600 probes employ a differential measurement technique. Unlike conventional combination probes, the differential probe has two high impedance measurement circuits containing a common metallic return electrode. One circuit includes the process measurement electrode which generates a potential E1 proportional to the process pH. The second circuit includes an internal measurement electrode immersed in a stable buffer solution which generates a standard reference potential, E2. Both circuit share a common potential E3 developed at the return electrode. The two circuits are fed into amplifiers which provide an output representing the differential between them: (E1 - E 3)– (E2 - E3). The common potential E3 is cancelled out electronically, greatly reducing inaccuracies caused by ground loops which may exist between process and instrument grounds. Ground loop current will flow through the low impedance path of the return electrode, affecting the potential E3, but not the differential measurement.
The differential probe maintains its accuracy and stability in aggressive process applications long after a combination-style probes performance begins to deteriorate. Maintenance costs are reduced and the life of the probe is increased. The internal reference electrode is electrically connected to the process solution by means of a field-replaceable double junction salt bridge which greatly reduces the possibility of contamination of the buffer solution in the reference circuit. Although seldom required, the reference solution may be easily replaced by removing the screw-out salt bridge. A salt bridge and buffers are available for this purpose.
Another advantage of the PHETX/ ORETX-600 series are the semi-flush face which is easily cleaned and avoids solution materials gathering on protrusions found in other probes. The domed glass electrode, the protective metal electrode and the temperature sensor protrude only about 1⁄8" while the salt bridge is flush. A flat-face version of the pH probe is also available. The PHETX/ORETX-600 series is available in: 1½ NPT threaded body style (-600), “easy-in, easy-out” variable insertion depth version with 1¼ NPT compression fitting (-610), or the hot tap version (-620).

SPECIFICATIONS
Measuring Range:
    pH: 0 to 14 pH (consult factory for applications below 2 or above 12)
    ORP: -500 to 500 mV or 0 mV to 1000 mV, field selectable
Flow Rate: 10 ft/sec max (3 meters/sec) flow should be as low as possible in low conductivity water and in solutions with high suspended solids
Wetted Materials: CPVC, kynar, glass, titanium palladium alloy and EPDM (platinum for ORP probe); opt FKM and ceramic
Transmission Distance: Dependant upon transmission distance and supply voltage 1
Sensitivity:
    pH: 0.001 pH
    ORP: 0.1 mV
Stability
    pH: 0.03 pH per day, non-cumulative
    ORP: 2 mV per day, non-cumulative
Temperature Compensation (Automatic): -5 to 95°C (23 to 203°F)
Pressure Limit: 100 psig at 65°C (149°F) max
Temperature Limits (CPVC): -5 to 95°C (23 to 203°F) the temperature limit of probes in flow through applications is limited by pressure and by the pipe fitting material.
Probe Cable: 4.6 m (15') long
Place Order(Specify Model Number)

What Other People Bought: When you see this icon, click on it to expand a list of products that other people have bought when they purchased this model.

Part Number/ Desc.
Qty
Description
Click to expand/minimize a list of what others bought with thePHETX-600
PHETX-600
Consult Sales  
Availability: 
 
 
1 1/2 NPT differential pH electrode with 4 to 20 mA outout
  
ORETX-600
Consult Sales  
Availability: 
 
 
1 1/2 NPT differential ORP electrode with 4 to 20 mA outout
  
PHETX-610
Consult Sales  
Availability: 
 
 
Compression fitting pH electrode with 4 to 20 mA output for 7/8 to 5" variable insertion
  
ORETX-610
Consult Sales  
Availability: 
 
 
Compression fitting ORP electrode with 4 to 20 mA output for 7/8 to 5" variable insertion
  
PHETX-620
Consult Sales  
Availability: 
 
 
Hot tap pH electrode with 4 to 20 mA output for 7/8 to 5" variable insertion
  
ORETX-620
Consult Sales  
Availability: 
 
 
Hot tap ORP electrode with 4 to 20 mA output for 7/8 to 5" variable insertion
Accessories
  
PHE-600-SB
AUD354.00
Availability: 5 weeks
 
Replacement salt bridge kit for 600 Series
  
PHE-612-SB
AUD354.00
Availability: 1 week
 
Replacement salt bridge kit for 610 Series
  
PHE-600-EP
AUD354.00
Availability: 5 weeks
 
Electrode protector for 600 Series
  
PHE-610-EP
Consult Sales  
Availability: 
 
 
Electrode protector for 610 Series
  
PHE-620-BVA
Consult Sales  
Availability: 
 
 
PVC hot tap ball valve assembly for 620 Series
Click to expand/minimize a list of what others bought with thePHA-10
PHA-10
AUD30.57
Availability: 1 week
 
pH 10 buffer solution 500 ml (1 pt)
Click to expand/minimize a list of what others bought with thePHA-10-GAL
PHA-10-GAL
AUD77.05
Availability: 1 week
 
pH 10 buffer solution 4L (1 gal)
Click to expand/minimize a list of what others bought with thePHA-4
PHA-4
AUD28.94
Availability: 1 week
 
pH 4 buffer solution 500 ml (1 pt)
Click to expand/minimize a list of what others bought with thePHA-4-GAL
PHA-4-GAL
AUD72.93
Availability: 1 week
 
pH 4 buffer solution 4L (1 gal)
Click to expand/minimize a list of what others bought with thePHA-7
PHA-7
AUD28.94
Availability: 1 week
 
pH 7 buffer solution 500 ml (1 pt)
Click to expand/minimize a list of what others bought with thePHA-7-GAL
PHA-7-GAL
AUD72.93
Availability: 1 week
 
pH 7 buffer solution 4L (1 gal)
Click to expand/minimize a list of what others bought with thePHA-DI
PHA-DI
AUD34.25
Availability: 1 week
 
De-ionized water 500 ml (1 pt)
Click to expand/minimize a list of what others bought with thePHA-DI-GAL
PHA-DI-GAL
AUD85.61
Availability: 1 week
 
De-ionized water 4L (1 gal)
  
PHAB-DI
AUD78.00
Availability: 3 weeks
 
20 single use foil packets of de-ionized water
Click to expand/minimize a list of what others bought with thePHAB-PH
PHAB-PH
AUD78.27
Availability: 1 week
 
5 each single use foil packets of pH-4, pH-7, pH-10, and de-ionized water
† All amounts shown in AUD
 Note: Comes complete with electrode, salt bridge and operator’s manual.
We noticed you are from the US. Visit your local site for regional offers and live support.
Stay here.
Go to the the US site >