VersaLog VL-RTD-1

NOTE: Requires the Siteview software, sold separately.The VersaLog VL-RTD-1 RTD Data Logger is a 4-channel, battery-powered, standalone temperature data logger. It records the ambient temperature with a built-in thermistor and has four external 2 or 3 wire RTD inputs plus alarm output capabilities. Data is stored in 8 MB of non-volatile flash memory for later retrieval.The VL-RTD-1 is a high accuracy device, its 4 external RTD channels offer accuracy of +/-0.16C @ 25C. It accepts standard 2 or 3 wire PT-100 RTD probes that have a resistance value of 100 ohms at 25C. It is powered by a 16-bit ADC and is well suited to science and laboratory applications where precise and accurate measurement is critical.The VL-RTD-1 RTD data logger features an aluminum enclosure and provides excellent performance in the harshest industrial environments. The VL-RTD-1 is powered by an internal non-rechargeable lithium battery with up to 10-year life.Features:– 16-bit Analog-to-Digital Converter- 8-megabyte memory stores up to 4 million measurements- 1 On-Board Thermistor Channel- 4 RTD Input Channels- USB, Serial and Optional Ethernet Interface Capabilities- 10-year Battery Life- Alarm Output
Memory CapacityAll VersaLog data loggers come with 8MB onboard flash memory. The following table shows the relationship between the number of enabled channels, sampling interval, and max time span of logging.

Specifications

Inputs:– Connections: Pluggable terminal block for four external channels, excitation controls, and alarm outputs- Channels: On-board ambient thermistor temperature sensor (-40C ~ 70C). Four external RTD channels for 2 or 3 wire PT100, 100 ohm RTDs, measurement range 20 ~ 400 ohms (-200C ~ 850C) Alpha .00385 & .00392 curves.- Resolution: 0.0018%, 0.02C- Accuracy: Internal thermistor channel: +/- 0.2C (0C ~ 70C) External RTD channels: +/- 0.015% FSR @ 25C, +/-0.16C @ 25C
Alarms:– Channel Alarms: Two editable alarm thresholds per channel- Alarm Outputs: ALARM1 & A2/EXT terminal strips can be configured as alarm outputs- Alarm-On: MOSFET (N-Channel) switch on Alarm-Off: MOSFET (N-Channel) switch off; Max Power: 200mA @ 24VDC, Can report alarm status to host PC via USB, Modem or Ethernet Device Server with SiteView software[2]- Alarm-On Delay: Programmable 0 10 minutes delay with 1-minute increments- Alarm Indicator: On-board LED lights in red when in alarm conditionOn-Board Memory:– Capacity: 8 megabytes (~4 million measurements)- Data Retention: Over 20 yearsSampling & Logging:– Sampling interval: 20 milliseconds[1] to 12 hours user selectable- Logging Mode: Stop recording or FIFO when memory is full- Logging Activation: Programmable instant, start delay or field push-button activationCommunications:– Interface: USB (USB cable included), AUX (RJ11) for direct TTL level communications. – Baud Rate Auto-detect baud rate from 2400 to 115200 bps on both USB and AUX portsBattery:– Power: Built-in 3.6V Lithium Battery- Life Cycle: 10 years based on 1-minute sampling intervalSoftware Requirements:– Computer with 1.0 GHz or faster processor, 256 MB Memory or higher & 1.0 GB of available hard-drive space or higher- Windows XP with SP2 or later, Vista, Windows 7, 8, 10- At least one USB port or one COM port- Requires SiteView software.Other specifications:– LED Indicator: Normal Sampling: green when sampling/Alarm: red when sampling/Low Battery: amber when sampling- Excitation Control A2/EXT terminal strip can be configured as excitation control output for powering connected devices- Warm-up delay Interval settings: 10 to 240 seconds with 10-second increments- Operating Environment: -40 ~ +70C (-40F ~ 158F), 0~95%RH non-condensing- Clock Accuracy: +/- 1 minute per month- Approvals: CE, FCC