Amprobe TM45A Thermometer is a small, go-anywhere size thermometer that is Type K thermocouple compatible and has °F/°C and 1°/0.1° selectable. It also has Data and Max Hold functions. Ideal for HVAC/R contractor, plant maintenance and commercial building service.
The TM45A is a compact, mini‑stick design thermometer aimed at HVAC/R contractors, plant maintenance personnel, and commercial building service technicians. It features a Type K thermocouple interface, selectable °F/°C units, and a data‑hold function, all housed in a small, go‑anywhere size.
The handbook lists the device’s key specifications such as a 3.4‑digit LCD display, 2.5 updates/sec, four AAA batteries with about 200 hours of runtime, operating temperature from 0 °C to 50 °C, and dimensions of 170 mm × 44 mm × 40 mm. Included accessories are a K‑type bead probe (TP255A), carrying case, batteries, and the user manual, with optional probes and handles available.
| Display | 3.4‑digit LCD, 1999 counts |
|---|---|
| Display Update Rate | 2.5 /sec (nominal) |
| Power Supply | Four 1.5 V AAA batteries |
| Battery Life | 200 hours (zinc‑carbon) |
| Operating Temperature | 0 °C to 50 °C, < 80 % RH |
| Storage Temperature | -20 °C to 60 °C, < 70 % RH (battery removed) |
| Dimensions (HxWxD) | 170 mm × 44 mm × 40 mm |
| Weight (incl. batteries) | 250 g (9 oz) |
| Thermocouple Compatibility | Type K |
| Supplied Probe | 1.2 m (4 ft) Type K bead probe |
The TM45A is compatible with a Type K thermocouple.
Typical battery life is about 200 hours when using zinc‑carbon AAA batteries.
It operates from 0 °C to 50 °C with relative humidity below 80 %.
The package includes a K‑type bead probe (TP255A), a carrying case, batteries, and the user manual.