The Anritsu AT Series measures air temperature with a choice of sensing heads, probe lengths and handle configurations.
The Anritsu AT Series measures air temperature using a choice of sensing-head designs. Select the head, length and handle arrangement to suit the measurement location, then match the thermocouple type and connector to your instrument.

| Model | Head construction | Temperature range | Grip |
|---|---|---|---|
| AT-10 | 1.5 mm diameter; fluororesin-insulated thermocouple | −50 to 200°C | No grip |
| AT-20 | 3 mm diameter; glass-fibre-insulated thermocouple | −50 to 300°C | No grip |
| AT-30 | 5 × 12 mm head with pipe | −50 to 500°C | With or without grip |
| AT-40 | 20 mm diameter head with pipe | −50 to 500°C | With or without grip |
The head rating does not apply to the grip, cable or plug. Keep each component within its own temperature limit.
These complete configurations provide a starting point for selection.
| Model | Type K example | Type E example |
|---|---|---|
| AT-10 | AT-10K-050-0-TS1-ANP | AT-10E-050-0-TS1-ANP |
| AT-20 | AT-20K-100-0-TS1-ANP | AT-20E-100-0-TS1-ANP |
| AT-30 | AT-30K-050-1-TC1-ANP | AT-30E-050-1-TC1-ANP |
| AT-40 | AT-40K-050-1-TC1-ANP | AT-40E-050-1-TC1-ANP |

| Model | Listed probe lengths |
|---|---|
| AT-10 | 300 or 500 mm |
| AT-20 | 300, 500, 1000 or 2000 mm; enquire for other lengths |
| AT-30 / AT-40 | 300, 500 or 1000 mm |
Length codes include 030 = 300 mm, 050 = 500 mm, 100 = 1000 mm and 200 = 2000 mm. Probe length and cable length are separate selections.
| Selection | Code / meaning |
|---|---|
| Thermocouple | K or E |
| Grip | 0: no grip; 1: grip, for AT-30/40 |
| Cable | TS: no-grip configuration; TC: grip configuration |
| Cable length | 1: 1 m; 1.5: 1.5 m; 2: 2 m; 2.5: 2.5 m |
| Plug | ANP: miniature; ASP: standard; W: without plug |
Anritsu specifies ±2.5°C at 100°C. For AT-30 and AT-40, the listed tolerance is ±3.0°C at 400°C and ±3.8°C at 500°C. Use the specification applicable to your operating temperature.
The published 0.3-second response is the time to reach 99% of the measured temperature in boiling water or vapour. Air measurements can settle more slowly, depending on airflow and installation.
These probes are listed as non-repairable. The “S” durability notation denotes a special application for which Anritsu does not assign a durability evaluation.
The original references are retained below. The suffix *** is a connector placeholder, not a complete order code. Confirm the final configuration and supply options before ordering.
| Model / reference | Model / reference |
|---|---|
| AT-10K-030-0-TS1-*** | AT-10K-050-0-TS1-*** |
| Model / reference | Model / reference |
|---|---|
| AT-20K-030-0-TS1-*** | AT-20K-050-0-TS1-*** |
| AT-20K-100-0-TS1-*** | AT-20K-200-0-TS1-*** |
| AT-20K-300-0-TS1-*** | AT-20K-400-0-TS1-*** |
| AT-20K-500-0-TS1-*** |
| Model / reference | Model / reference |
|---|---|
| AT-30K-030-0-TS1-*** | AT-30K-050-0-TS1-*** |
| AT-30K-100-0-TS1-*** | AT-30K-030-1-TC1-*** |
| AT-30K-050-1-TC1-*** | AT-30K-100-1-TC1-*** |
| Model / reference | Model / reference |
|---|---|
| AT-40K-030-0-TS1-*** | AT-40K-050-0-TS1-*** |
| AT-40K-100-0-TS1-*** | AT-40K-030-1-TC1-*** |
| AT-40K-050-1-TC1-*** | AT-40K-100-1-TC1-*** |
The AT-20 references with length codes 300, 400 and 500 were listed on the earlier Seacom page. Ask us to confirm these longer configurations against your application.
Confirm input and connector compatibility before pairing a probe with an instrument.
Contact Seacom Process Instruments Sdn Bhd with the air temperature range, measurement location, required probe and cable lengths, and thermometer model. For a replacement, include the full order code or a photograph of the existing probe label.
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