A Division of Alabama Specialty Products, Inc.              
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Model ER1000

Electrical Resistance Probe
with 1/2" NPT Pipe Plug and Loop Element

View data sheet (PDF)


Model ER1000 is a fixed-length, electrical resistance probe with a 1/2" NPT pipe plug. The probe requires process isolation or process shutdown to install and a threaded pipe fitting to mount. With a diameter of 1/2", the probe is ideal for applications where space is limited. The probe assembly consists of an insertion rod with an element, a hermetically sealed connector, a 1/2" NPT pipe plug, and a velocity shield, which are all welded in place. The insertion length (I.L.) is calculated to the end of the shield and can be specified by the customer. For standard probes, the maximum insertion length is given in the chart below. Several standard loop elements are available to meet your specific needs.


Probe Body - 316 Stainless Steel
Element Seal - Glass or Teflon®
Fill Material - Ceramic
Temperature Rating - 500° F / 260° C
Pressure Rating - 3000 PSI / 204 Bar
Mounting - 1/2" NPT Pipe Plug

Std. Length I.L. (max)
5" 2.08"
8" 5.08"
12" 9.08"
18" 15.08"

ER1000 Ordering Information

EP21 - Electrical Resistance 1/2" NPT Pipe Plug Probe
  Probe Body Material
22 - 316
44 - C276
  E/R Element Options
00 - WR40 Wire Loop - 40 mil thickness (10 mil useful probe life)
10 - WR80 Wire Loop - 80 mil thickness (20 mil useful probe life)
20 - TU04 Tube Loop - 4 mil thickness (2 mil useful probe life)
30 - TU08 Tube Loop - 8 mil thickness (4 mil useful probe life)
  Seal Type
1 - Glass
2 - Teflon®
3 - Epoxy
05 - 2.08 inches max. insertion length
08 - 5.08 inches max. insertion length
12 - 9.08 inches max. insertion length
18 - 15.08 inches max. insertion length
  Element Alloy
  ER Probe Options
00 - No shield
03 - Shield
    Insertion Length (I.L.)
Enter length in inches, stated in 2 decimal place format. Round calculated length down to the nearest 1/8".
(Example: 5 1/8" = 0512)

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