The SRD-99 data logger is designed to record signal inputs and display current values in graphs and numeric form. The device is equipped with 1, 4 or 8 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.
The device has the memory capacity of 2 MB (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)!The logging rate is programmable from 1 second to 60 minutes.
The internal analogue-digital converter has a 16 bit resolution (12 bit in unit with 0/4-20mA inputs), which provides high recording resolution results. Additionally, individual alphanumeric description (text) of each of the recorded channels is possible. The 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
85 ÷ 260V AC/DC
Power consumption:
typical 7 VA; max. 12 VA
Display:
backlit, graphic LCD, 128 x 64 points, with backlight
Measuring inputs:
1, 4 or 8, Pt100; Pt500; Pt1000 (2 and 3-conductor connection) or 0/4-20 mA inputs; common earthing
Sample Rate
Programmable 1 second to 60 minutes
Logging Modes
Stop when full or memory wrap
Measuring range:
± 9999 + decimal point (current inputs); -100°C +600°C (RTD inputs) with resolution 0,1°C
Digital input:
1 input 24V DC
Sensors supply:
24 V DC±5% / 200 mA, not separated from measuring inputs
Communication interface:
RS-485 (MODBUS RTU) or USB Host port, galvanically separated
Transmission speed:
1200 - 115200 bit/sec.
Memory capacity:
2 MB (0,5 milion data recordings)
8 MB (above 2 milion data recordings) in version with USB Host
Type of protection:
version without USB:
IP 40 (front side)
IP 65 (front side when an additional frame is installed)
version with USB:
IP 20
IP 42 (when transparent door with security key type STD-99 is installed)
Use our online calculator to work out input signal ranges and scaling in engineering units for data loggers. Also calculates shunt resistor values, resolution and null point offsets.
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Single Channel Recorders with USB memory port.
SRD-99-1100-1-4-01B
1 channel recorder with 4..2OmA inputs, USB memory port, RS485 port, Pc software, power supply 85-260VAC . Int. mem 2M rdgs
