The Lutron BTM-4208SD is a 12-channel temperature recorder for type K/J/T/E/R/S thermocouples. It saves readings with date and time to an SD card that opens directly in Excel, with auto or manual logging, a backlit LCD showing up to 8 channels at once and an RS232/USB interface.
The Lutron BTM-4208SD is a 12-channel temperature recorder (CH1 to CH12) for type K, J, T, E, R and S thermocouple probes. With a type K probe it measures from -100 to 1300 °C with 0.1 °C resolution up to 999.9 °C, and the reading can be shown in °C or °F.
It is a real-time data logger: the measurements of the 12 channels are saved together with the time information (year, month, date, hour, minute, second) on an SD memory card and can be downloaded to Excel with no extra software, so the user can carry out further data or graphic analysis. Logging is automatic, with a sampling time from 1 to 3600 seconds, or manual, saving one record each time the logger button is pressed.
The jumbo LCD with green backlight shows CH1 to CH8 or CH9 to CH12 on the same screen by page selection. The recorder is powered by 8 AA (UM3) 1.5 V batteries or a DC 9V adapter and has an RS232/USB computer interface.
| Manufacturer | Lutron Electronic |
|---|---|
| Model | BTM-4208SD |
| Channels | 12 channels: T1 to T12 |
| Sensor Type | Type K thermocouple probe; type J/T/E/R/S thermocouple probe |
| Resolution | 0.1 °C / 1 °C, 0.1 °F / 1 °F |
| Type K – Range, Resolution, Accuracy (°C) | -100.0 to -50.1 °C, 0.1 °C: ± (0.4 % + 1 °C); -50.0 to 999.9 °C, 0.1 °C: ± (0.4 % + 0.5 °C); 1000 to 1300 °C, 1 °C: ± (0.4 % + 1 °C) |
| Type K – Range, Resolution, Accuracy (°F) | -148.0 to -58.1 °F, 0.1 °F: ± (0.4 % + 1.8 °F); -58.0 to 999.9 °F, 0.1 °F: ± (0.4 % + 1 °F); 1000 to 2372 °F, 1 °F: ± (0.4 % + 2 °F) |
| Type J – Range, Resolution, Accuracy (°C) | -100.0 to -50.1 °C, 0.1 °C: ± (0.4 % + 1 °C); -50.0 to 999.9 °C, 0.1 °C: ± (0.4 % + 0.5 °C) |
| Type J – Range, Resolution, Accuracy (°F) | -148.0 to -58.1 °F, 0.1 °F: ± (0.4 % + 1.8 °F); -58.0 to 999.9 °F, 0.1 °F: ± (0.4 % + 1 °F) |
| Type T – Range, Resolution, Accuracy (°C) | -100.0 to -50.1 °C, 0.1 °C: ± (0.4 % + 1 °C); -50.0 to 400.0 °C, 0.1 °C: ± (0.4 % + 0.5 °C) |
| Type T – Range, Resolution, Accuracy (°F) | -148.0 to -58.1 °F, 0.1 °F: ± (0.4 % + 1.8 °F); -58.0 to 752.0 °F, 0.1 °F: ± (0.4 % + 1 °F) |
| Type E – Range, Resolution, Accuracy (°C) | -100.0 to -50.1 °C, 0.1 °C: ± (0.4 % + 1 °C); -50.0 to 900.0 °C, 0.1 °C: ± (0.4 % + 0.5 °C) |
| Type E – Range, Resolution, Accuracy (°F) | -148.0 to -58.1 °F, 0.1 °F: ± (0.4 % + 1.8 °F); -58.0 to 999.9 °F, 0.1 °F: ± (0.4 % + 1 °F); 1000 to 1652 °F, 1 °F: ± (0.4 % + 2 °F) |
| Type R – Range, Resolution, Accuracy (°C) | 0 to 600 °C, 1 °C: ± (0.4 % + 0.5 °C); 601 to 1700 °C, 1 °C: ± (0.4 % + 1 °C) |
| Type R – Range, Resolution, Accuracy (°F) | 32 to 1112 °F, 1 °F: ± (0.4 % + 1 °F); 1113 to 3092 °F, 1 °F: ± (0.4 % + 2 °F) |
| Type S – Range, Resolution, Accuracy (°C) | 0 to 600 °C, 1 °C: ± (0.4 % + 0.5 °C); 601 to 1500 °C, 1 °C: ± (0.4 % + 1 °C) |
| Type S – Range, Resolution, Accuracy (°F) | 32 to 1112 °F, 1 °F: ± (0.4 % + 1 °F); 1113 to 2732 °F, 1 °F: ± (0.4 % + 2 °F) |
| Accuracy Conditions | Specified for the meter only, at an environment temperature of 23 ± 5 °C |
| Display | LCD, 82 mm x 61 mm, with green color backlight |
| Datalogger Sampling Time | Auto: 1 second to 3600 seconds; Manual: one record per push of the data logger button |
| Memory Card | SD memory card, 1 GB to 16 GB |
| Temperature Compensation | Automatic temperature compensation for type K/J/T/E/R/S |
| Linear Compensation | Linear compensation for the full range |
| Offset Adjustment | Adjusts the zero temperature deviation value |
| Probe Input Socket | 2 pin thermocouple socket |
| Data Hold | Freezes the display reading |
| Memory Recall | Maximum and minimum value |
| Sampling Time of Display | Approx. 1 second |
| Data Output | RS232/USB PC computer interface (optional RS232 cable UPCB-02 or USB cable USB-01) |
| Power Off | Auto shut off or manual off by push button |
| Operating Temperature | 0 to 50 °C |
| Operating Humidity | Less than 85 % R.H. |
| Power Supply | Alkaline or heavy duty DC 1.5 V battery (UM3, AA) x 8 PCs, or DC 9V adapter input (AC/DC power adapter is optional) |
| Power Current | Approx. DC 7.5 mA in normal operation (SD card not saving, backlight off); approx. DC 25 mA while the SD card saves data (backlight off); backlight on adds approx. 11 mA |
| Standards | ISO-9001, CE, IEC1010 |
| Dimensions | 225 x 125 x 64 mm (8.86 x 4.92 x 2.52 inch) |
| Weight | 948 g (meter, includes batteries) |
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