2456-Lem Laboratory Environment Monitor

2456-LEM from Fluke Calibration has the ability to measure barometric pressure, ambient temperature, relative humidity and air density.

Manufacturer part number (MPN)

3872718

Brand

Fluke

Category

Tools

Units

Temperature: °F or °C Pressure: mmHg, cmHg, inHg, kPa, mbar, psi, bar, kg/cm2 Humidity: %RH Air Density: g/cm3, kg/m3, lb/in3

Power

10 to 36 V dc, 250 mA maximum (supplied with 115/230 ac adapter). Optional power via RS-485.

Temperature

Operating: 18 °C to 28 °C (64 °F to 82 °F) Storage: -20 °C to 70 °C (-4 °F to 158 °F)

Humidity

5 % to 95 % RH, non-condensing

Weight

0.23 kg (0.5 lb)

Dimensions

(H x W x D) 133.35 mm x 82.55 mm x 31.75 mm (5.25 in x 3.25 in x 1.25 in)

Communications

RS-232 or RS-485

Warm up time

30 minutes

Data update

One second

Pressure

20 inHg to 34 inHg (700 mbar to 1150 mbar)

Precision

Temperature: ± 0.1°C (0.18 °F) Pressure: ± 0.04 inHg (1.3 mbar) Humidity: ± 3 % RH Precision is defined as the combined effects of linearity, repeatability and hysteresis.

Total uncertainty

Temperature: ± 0.5°C (0.9 °F) per year Pressure: ± 0.08 inHg (2.7 mbar) per year Humidity: ± 10 % RH per year

Software

Requires Microsoft® Windows® 95 or higher, 1.6 MB of available hard disk space, 32 MB RAM, RS-232 or RS-485, interface includes extensive help and system manual includes syntax commands.

• OEM-URL https://www.fluke.com/en-us/product/calibration-tools/humidity-calibration/2456-lem