Ag/AgCl Reference

ZrO2-Based pH Glass-Based pH Platinum Redox High-P, High-T CMAS Corrosion Probe High Temperature & High Pressure pH, Reference & Platinum Electrodes
High-Temperature and High-Pressure Pressure Balanced Ag/AgCl Reference Probes
 

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Call:    (210) 924-3101

Fax:     (210) 696-1126

info@corrinstruments.com 

 
High-Temperature and High-Pressure Pressure Balanced Ag/AgCl Reference Electrodes are divided into three types (A, B, and C) and two designs (External Reference Electrode or Internal Reference Electrode). 

Types A and B have a compression fitting and an insertion tube. Type A has an NPT fitting with a metal seal that will be locked to the insertion tube after first use (insertion depth one-time adjustable only). Type B has an NPT fitting with a soft seal that can be reposition on the insertion tube after each use (insertion depth fully adjustable).  The NPT fittings for Types A and B are sold separately.  

Type C has a threaded fitting. If the NPT size is 1/4" or larger, a thin-walled protection tube may be provided . Type C is ultra compact and may be used in autoclaves that have smaller access ports (1/8"). But the insertion depth for Type C is fixed at factory (non adjustable). Type C is available for internal design only.

External design:  Reference material (Ag/AgCl) is away from heated location and maintained near ambient temperature so that the probe is more stable when used at T>200 oC.  

Internal design: Reference material (Ag/AgCl) is in heated location so that the probe has a better defined thermodynamic potential.  Not recommended for long-term use at T>200 oC.   

 

Specifications:

  Pressure:       Ambient to 2000 psi (13 MPa)  (higher pressure models are available).

  Temperature:  

       -External design:  0oC (32oF) to 305oC (581oF) for continuous use.

       -Internal design:   0oC (32oF) to 200oC (392oF) for continuous use; 200oC (392oF) to 305oC (581oF) for short-term use

  Tube/Fitting Materials:   316L Stainless steel (standard);  Ti and  C-276 are available.

  Seals:     QueonTM . 

  Liquid Junction:  Saturated (standard) or  0.1 m KCl.

 
 

 
 

 

High Temperature and/or High Pressure Ag/AgCl Reference Probes Selection Guide

  

Order Code

   Connection Type and Size*

Thread Fitting Option

Upper Design Pressure PSI (atm)

Sealability Helium Leakage+ cc/sec

Temperature Range oF (oC)

 

External or Internal Pressure  Balanced Reference Electrodes with Compression Fitting 

RZ-x-b-Tube250

¼" Tube

N/A (no fitting)

3000 (205)+

<2x10-8

32(0) - 581(305)

RZ-x-b-Tube250-NPT125A

1/8” NPT on ¼” tube

One-Time Adjustable

3000 (205)+

<2x10-8

32(0) - 581(305)

RZ-x-b-Tube250 –NPT250A

¼” NPT on ¼” tube

One-Time Adjustable

3000 (205)+

<2x10-8

32(0) - 581(305)

RZ-x-b-Tube250 –NPT250B

¼” NPT movable on ¼” tube

 Fully Adjustable 

3000 (205)+

<2x10-8

32(0) - 581(305)

RZ-x-b-Tube375

3/8" Tube

N/A

2000(136)+

<2x10-8

32(0) - 581(305)

 RZ-x-b-Tube375-NPT250A

(Standard Type)

¼” NPT on 3/8” tube

One-Time Adjustable

2000(136)+

<2x10-8

32(0) - 581(305)

RZ-x-b-Tube375-NPT375A

3/8” NPT on 3/8” tube

One-Time Adjustable

2000(136)+

<2x10-8

32(0) - 581(305)

RZ-x-b-Tube375-NPT500A

1/2” NPT on 3/8” tube

One-Time Adjustable

2000(136)+

<2x10-8

32(0) - 581(305)

RZ–x-b-Tube375-NPT500B

1/2” NPT movable on 3/8” tube

Fully Adjustable 

2000(136)+

<2x10-8

32(0) - 581(305)

 

 Internal Pressure-Balanced Reference Electrodes with Thread Fitting 

 

    

RI -x-b-NPT125C

1/8" NPT

Non-Adjustable

3000 (205)+

<2x10-8

32(0) - 581(305)

RI -x-b-NPT250C

1/4" NPT

Non-Adjustable

2000(136)+

<2x10-8

32(0) - 581(305)

RI -x-b-NPT375C

3/8" NPT

Non-Adjustable

2000(136)+

<2x10-8

32(0) - 581(305)

+ Higher pressure models are available.

  Call:  (210) 924-3101 Fax: (210)696-1126 Email: info@corrinstruments.com  
  copyright © 2003-2009, Corr Instruments, LLC, San Antonio, TX, USA, All rights reserved.  

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