Ashcroft EL Series Bimetal Thermometer

Fits local mechanical temperature indication on vibrating process lines where you need a silicone liquid-filled hermetic SS bimetal, external adjustment, and no electrical output.

Key advantages

Liquid-filled case — Silicone fill dampens vibration on the dial.
±1% span Grade A — ASME B40.200 (B40.3 Grade A).
Continuous to 800 °F — Continuous to 800 °F (425 °C); intermittent to 1000 °F (500 °C).
3 / 5″ Everyangle — Maxivision dials with external adjustment.
NEMA 4X / IP66 — Hermetic 304/316 SS case and stem.

Typical applications

Local temperature indication on vibrating pumps, compressors, and process lines.
Mechanical backup indication where liquid fill reduces pointer flutter.
Everyangle installs with thermowells above 15 psi.

Selection guide

Measuring range — Standard dial ranges; continuous to 800 °F (425 °C); intermittent to 1000 °F (500 °C).
Sensor — Bimetal coil in a liquid-filled case; silicone coil options.
Accuracy — ±1% of span ASME B40.200 (B40.3 Grade A).
Dial / head — Maxivision dial 3″ / 5″; Everyangle / rear with external adjustment.
Stem — Diameter 0.250″ or 0.375″; length 2½″…36″.
Process connection — Plain; ½ NPT fixed; ½ NPT Union Everyangle; ½ NPT Adjustable Union.
Case / stem — 304 SS or 316 SS hermetically sealed, silicone liquid-filled.
IP / ambient — NEMA 4X / IP66; ambient −40…+200 °F (−40…+93 °C) typical dry ambient envelope.
Mounting — Direct stem mount; thermowell recommended >15 psi.

Common mistakes

Specifying continuous service above 800 °F — intermittent limit is 1000 °F.
Ordering stem length past 36″ — EL stem options stop at 36″ (unlike some dry EI stems).
Skipping a thermowell above 15 psi.
Undersizing stem immersion so the bimetal coil sits in a dead zone.
Expecting an electrical output — mechanical dial only.

When to RFQ / what to tell us

Dial size (3″/5″), mount, stem diameter/length (≤36″), and dial range.
304 vs 316 SS, process connection, thermowell yes/no.
Quantity, ship-to.

Request a Quote · Get selection help

Specs

Spec	Value
SKU	39227
Brand	Ashcroft
Model	EL Series
Product type	gauge (bimetal thermometer, liquid-filled)
Measuring range	Standard dial ranges through family tables; continuous service to 800 °F (425 °C); intermittent to 1000 °F (500 °C)
Sensor	Bimetal coil (liquid-filled case)
Accuracy	±1% of span ASME B40.200 (B40.3 Grade A)
Output signal	Mechanical dial indication (no electrical output)
Process connection	Plain; ½ NPT fixed; ½ NPT Union Everyangle; ½ NPT Adjustable Union
Stem diameter	0.250″ or 0.375″
Stem length	2½″ to 36″
Case / stem material	304 SS or 316 SS (hermetically sealed, silicone liquid-filled)
Housing	Liquid-filled hermetically sealed SS case
IP rating	NEMA 4X / IP66
Ambient temperature	−40…+200 °F (−40…+93 °C) typical dry ambient envelope
Display	Maxivision dial 3″/5″
Head	3″/5″ Everyangle / rear with external adjustment
Mounting	Direct stem mount; thermowell recommended >15 psi
Approvals	RoHS
Notes	Ashcroft EL liquid-filled externally adjustable bimetal. Specs from OEM EL datasheet Rev E family.

Documents

Ashcroft EL Series datasheet (PDF)

FAQ

Q: How does EL differ from dry EI? A: EL is liquid-filled (silicone) hermetic case for vibration dampening; stem lengths go to 36″. Confirm fill and stem length in the RFQ — do not assume EI options carry over.

Q: What accuracy and continuous temperature limit apply? A: ±1% of span ASME B40.3 Grade A. Continuous service to 800 °F (425 °C); intermittent to 1000 °F (500 °C).

Q: Do I need a thermowell? A: Datasheet recommends a thermowell for process pressure >15 psi. State process pressure and connection in the RFQ.

Q: Is there an electrical output? A: No — mechanical dial indication only. Compatible with systems that use Ashcroft EL Series local indication if you need a drop-in check — we do not claim authorized-dealer status.