The SRD-99 device is designed to record and display current values as well as to present technological parameters in the form of graphs. The device is equipped with eight temperature (Pt100/500/1000) or current (in the 0/4-20 mA standard) inputs, one pulse (digital) input for controlling the recording process and one USB Host port for flash data storage. Internal memory has 2 MB capacity (0.5 million data recordings altogether) or 8 MB in version with USB port (2 milions data recordings). However when a USB flash drive is plugged permanently, it can
significantly extend the recording time without a need of data transfering from SRD-99 to a PC. For example: 1GB flash drive allows continuous data recording for over 1 year (8 channels recorded every 1 sec., approx 250 millions data recordings)! Individual alphanumeric description (text) of each of the recorded channels is possible. The multi-language menu assisted with full text descriptions makes the unit configuration process quite easy. However, due to a significant number of configured parameters it is advised to use the attached configuration software for PCs.
Power supply voltage: 19V ÷ 50V DC; 16V ÷ 35V AC or 85 ÷ 260V AC/DC
Display: graphic LCD, 128 x 64 points, with backlight
Measuring inputs: 1, 4 or 8; Pt100; Pt500; Pt1000 or 0/4-20 mA inputs
Measuring range: ± 9999 + decimal point (current inputs); -100°C ÷ +600°C (RTD inputs) with resolution 0,1°C
Digital input: 1 input 24V DC, optocoupled
Sensors supply: 24 V DC±5%
Communication interface: RS-485 (Modbus RTU) or USB Host port
Internal memory capacity: 2 MB in version without USB, 8 MB in version with USB Host port
Case: board, 96 x 96 x 100 mm
Software attached with data recorder: Loggy Soft for visualization, archiving and printing of measurements (e.g. temperature, humidity, pressure); S-Toolkit for configuration, reading and writing operations, updating the device firmware.