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Model ER7100

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

View data sheet (PDF)


Model ER7100 is a fixed-length, retrievable, electrical resistance probe for use with HP and MH high pressure access systems. The all-welded construction of the element makes it ideal for harsh environments. The probe assembly consists of an insertion rod with an element, a hermetically sealed connector, and a hollow plug nut, which are all welded in place. A velocity shield can be added to the assembly if required. The hollow plug nut on the probe screws into the hollow plug of the access system. This allows the probe to be installed in the process, using a retriever tool and service valve, without process shutdown. The insertion length (I.L.) can range from 5" up to any length specified by the customer in 1/8" increments. Insertion length is calculated by the formula:

I.L. = PD + WT + 1.75"
(where PD = penetration depth, WT = wall thickness)

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 - Welded
Fill Material - Ceramic
Temperature Rating - 500° F / 260° C
Pressure Rating - 3600 PSI / 245 Bar
Mounting - High Pressure (HPTM or MHTM) Access System with Hollow Plug


ER7100 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
5 - CT10 Cylindrical - 10 mil thickness (5 mil useful probe life)
J - CT10 Cylindrical (2") - 10 mil thickness (5 mil useful probe life)
6 - CT20 Cylindrical - 20 mil thickness (10 mil useful probe life)
7 - CT50 Cylindrical - 50 mil thickness (25 mil useful probe life)
  Seal Type
0 - All Welded
  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
00 - No shield
01 - Standard Shield
02 - High-Velocity Shield
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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