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Model ER7230

Electrical Resistance Probe, Retrievable with Flush Element
Large Header for High Pressure (HPTM and MHTM) Access Systems

View data sheet (PDF)


Model ER7230 is a fixed-length, flush-mount, retrievable, electrical resistance (ER) probe for use with high pressure access systems. The ER7230 is ideally suited for applications where the probe element should be flush with the wall of the pipe, but it can be used at any position in the line.  The ER7230 has been specifically designed to minimize the negative effects of iron sulfide by maximizing the spacing between the sensing element and probe body, thus reducing the possibility of shorting by conductive buildup.

The probe assembly consists of the sensing element, insertion rod, hermetically sealed connector, and an integral hollow plug nut which mates with the hollow plugs of various high pressure access systems.  This allows the probe to be installed and retrieved without system shutdown using a retriever tool and service valve.

The insertion length (I.L.) can range from a minimum of 1.75" up to any length specified by the customer in 1/8" increments, using the formula:

I.L. = PD + WT + 1.75"
(where PD = penetration depth, WT = wall thickness)
For top-of-the-line, flush-mount monitoring, PD = 0.

Note: Formula valid for access fitting heights of 5.25" (HP) and 5.5" (MH).

Several standard elements are available to meet your specific needs. Probe adaptors are available and must be ordered separately.


Probe Body - 316 Stainless Steel
Element Seal - Epoxy
Fill Material - Epoxy
Temperature Rating - 500° F / 260° C
Pressure Rating - 3600 PSI / 245 Bar
Mounting - High Pressure (HPTM or MHTM) Access System with Hollow Plug


ER7230 Ordering Information

HR - Electrical Resistance Probe for High Pressure (HP and MH) Access Systems
  Probe Body Material
2 - 316 SS
3 - C276
  Connector Type
1 - Small Connector
2 - Standard Connector
  ER Element Options
A - FS4 Flush Mount - 4 mil thickness (2 mil useful probe life)
B - FS8 Flush Mount - 8 mil thickness (4 mil useful probe life)
H - FS20 Flush Mount - 20 mil thickness (10 mil useful probe life
  Seal Type
3 - Epoxy
  Length (Round calculated length down to the nearest 1/8")
Enter length in inches, stated in 2 decimal place format (Example: 6 1/8" = 0612) Click here to open Length Calculator
  Element Alloy
  ER Probe Options
LH - Large Header
Your Part Number



This list represents our most common options.  Many other sizes, alloys, and options are available.
Please contact your Metal Samples sales representative if you do not see what you're looking for.
(Note: Not all alloys are available with all element types and seals.)
* Chemically equivalent to standard pipe-grade carbon steels.

Teflon® is a registered trademark of DuPont.
Metal Samples Company

P.O. Box 8
152 Metal Samples Rd.
Munford, AL 36268

: (256) 358-4202
Fax: (256) 358-4515

E-mail: msc@alspi.com

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Metal Samples Company is a division of Alabama Specialty Products, Inc. - Copyright © 2023