AEMC Data Logger Model L452 The Model L452 is a low cost, simple to use, two-channel data logger. It records DC voltage, DC current, pulses and events. Its two input channels allow the user to connect to various types of sensors in order to record data such as pressure, temperature, flow, humidity and more. This logger can also be used to record events such as machine run time. Each channel's real-time measurement is displayed on the LCD screen. The L452 communicates via USB or Bluetooth for configuration and data transfer to a PC using the free DataView software included with the unit. The logger can also be configured using its front panel with a very simple user interface. Channels Two with LCD display Input 4mm safety banana jacks Ranges (4) 100mV/1V/10V, 4 to 20mA, Event & Pulse Accuracy ± 100mV, ±1V, ±10V: ±(0.5% R +1ct) 4 to 20mA ±(0.25% R +5ct) Resolution Pulse: 3.3V (with 1M¦ pull up resistor) Event: ± 10V Input Impedance V DC: 1M¦, DC current: 100¦ Event: 1M¦, Pulse N/A Sample Rate Max V & Current DC: 5 samples/s, Event 16 samples/s, Pulse 100 samples/s Storage Rate Programmable from 200 ms to 60 minutes Storage Modes Start/Stop Recording Length 15 minutes to 6 weeks, programmable using DataView Memory 32MB recorded data is stored in non-volatile memory and will be retained even if battery is low or removed. Communication USB 2.0, Bluetooth 2.1 Class 1 (100m) Power Source 2x1.2V 400mAh NIMH Charger (Supply) Rechargeable by main 110 to 240V 50/60Hz or via USB cable Battery Life (Display ON) 18 days @ 200ms sampling rate, 27 days @ 60s Battery Life (Display OFF) 36 days @ 200ms sampling rate, 270 days @ 60s Dimensions 4.92 x 2.60 x 1.30 (125 x 66 x 33mm) Weight (with battery) 7.4 oz (210g) Case Polycarbonate Operating Temperature 32° to 122°F (0° to 50°C) Storage Temperature -4° to 140°F (-20° to 65°C) Relative Humidity Up to 90% @ 104°F (40°C) Ingress Protection (IP) IP40 EMC EN 61326-1 Safety Compliance IEC 61010-1, EN 61010-2-30