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  • SRD-99

SRD-99 Multi-Channel Display & Data Logger

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Availability: 1-2 Weeks


Quick Overview

The SRD-99 Multi-channel display 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, two relay outputs for control 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 million data recordings). However when a USB flash drive is plugged permanently, it can significantly extend the recording time without a need of data transferring 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 or 85 ÷ 260V AC/DC
  • Power consumption: typical 7 VA; max. 12 VA
  • Display: 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
  • Protection: version without USB: IP 40 (front side) IP 65 (front side when an additional frame is installed)
  • Protection: version with USB: IP 20, IP 42 (when transparent door with security key type STD-99 is installed)
  • Working temperature: 0°C ÷ +60°C
  • Storage temperature: -10°C ÷ +70°C
  • Case dimensions: 96 x 96 x 100 mm
  • Panel cut-out dimensions: 90,5 x 90,5 mm
  • Installation depth: min. 102 mm
  • Board thickness: max. 5 mm

Connector for power supply included. All connectors are waterproof.


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Product Attachments

View FileSRD-99 Datasheet    Size: (1.25 MB)
View FileSRD-99 Current Input Diagram    Size: (142.49 KB)