D4T Benchtop Datalogger

Zesta D4T Benchtop Datalogger
Zesta D4T Benchtop Datalogger
Zesta’s D4T Benchtop Datalogger is loaded with powerful features, yet its intuitive navigation allows for quick setup and easy operation. It is equipped with a 4.3-inch, colour, graphical touch-screen interface. Users can fully personalized the user interface by renaming channels, alarms, inputs and outputs with user defined names.

Completely flexible, it can be configured with channels ranging from 1 to 24, and can log up to 128 parameters simultaneously, depending on configuration. It records as fast as one time per 0.1 second or as slow as one time per hour.

The D4T Benchtop Datalogger easily complies with regulatory standards with ability to choose encrypted, .CSV or both types of file formats for tamper proof record needs. It enables security using lock-out security levels for different user groups.

The D4T Benchtop Datalogger is field expandable. Many optional features (encryption, graphical trend charts, function block sets, additional channels etc.) can be activated instantly in the field. Inputs and outputs are also field expandable. Ask your Zesta
sales representative for details.

From laboratory to the field, Zesta’s D4T Benchtop Datalogger delivers complete flexibility and simplicity to your most demanding data logging application.
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Product Features

  • 4.3-inch color graphical touch panel
  • Data logging with encrypted files
  • Graphical trend charts
  • Inputs and outputs from 1 to 24
  • Intuitive user interface with screen personalization. Channels, alarms, inputs and outputs can be personalized with user defined names
  • Programmable timers, counters, math and logic
  • Log temperature, altitude, relative humidity and Vaisala® humidity compensation, AC current and other 0-10VDC or 0-20mA process units
  • USB port for recording to memory stick
  • Configuration settings can be stored and recalled
  • Ethernet Modbus® TCP connectivity
  • Agency approvals: CSA/UL508 NRTL/C, File No.LR91385

Product Specifications


  • 120V, 50/60Hz, 5ft power cord & 125VAC plug
  • 240V, 50/60Hz, 5ft power cord & 250VAC plug

User Interface
  • 4.3 inch TFT PCAP color graphic touch screen
  • LED backlife >50K hours
  • 4 keys: Home, Main Menu, Back, Help
  • On/Off button on front plate

Data Logging
  • User selectable parameters: Up to a maximum of 128 active parameters depending on configuration
  • Logging interval: Programmable increments between 0.1 seconds and 60 minutes if logging to internal memory. Logging directly to USB; 1.0 seconds to 60 minutes
  • File types: .CSV for standard data logging or proprietary format for encrypted data log option
  • Storage: 80MB internal memory or to USB memory stick
  • File transfer: Internal memory to USB host port or to Ethernet Modbus® TCP
  • Transfer options: On demand by user or user programmable based on when a new data log file record is available. Utilizes TFTP and Samba protocols
  • Record: Date and time stamped
  • Data retention upon power failure via nonvolatile memory

Trending Option
  • 4 user programmable charts
  • 6 pens available per chart
  • View analog sensors, process values, set points and power

Calibration Accuracy
  • Calibration accuracy and sensor conformity: ±0.1% of span, ±1°C at the calibrated ambient temperature and rated line voltage
  • Types R, S, B: ±0.2%
  • Type T below -50°C: ±0.2%
  • Calibration ambient temperature at 77°F ±5°F (25°C ±3°C)
  • Accuracy span: 1000°F (540°C) min.
  • Temperature stability: Typical ±0.1°F/°F (±0.1°C/°C) rise in ambient max.

Real Time Clock with Battery Backup
  • Accuracy (typical): +/-3ppm over -15 to 50°C
  • Typical battery life: 10 years at 77°F (25°C)
  • Field replaceable lithium battery

  • User programmable alarms

  • Ethernet Modbus® TCP
  • Isolated communications

  • NEMA Type 1 Enclosure
  • Operating temperature: 0 to 104°F (-18 to 40°C)
  • Storage temperature: -40 to 185°F (-40 to 85°C)
  • Relative humidity: 0 to 90%, non-condensing

  • 12" x 10" x 7" (H x W x D) nominal

Signal Input
Thermocouple, grounded or ungrounded.
  • Accepts all standard size and miniature male connectors.
  • Type J: -346 to 2192°F (-210 to 1200°C)
  • Type K: -454 to 2500°F (-270 to 1371°C)
  • Type T: -454 to 750°F (-270 to 400°C)
  • Type E: -454 to 1832°F (-270 to 1000°C)
  • Type N: -454 to 2372°F (-270 to 1300°C)
  • Type C: 32 to 4200°F (0 to 2315°C)
  • Type D: 32 to 4200°F (0 to 2315°C)
  • Type F (PTII): 32 to 2449°F (0 to 1343°C)
  • Type R: -58 to 3214°F (-50 to 1767°C)
  • Type S: -58 to 3214°F (-50 to 1767°C)
  • Type B: 32 to 3300°F (0 to 1816°C)
RTD, 2-wire or 3-wire
  • RTD 100-ohm: -328 to 1472°F (-200 to 800°C)
  • RTD 1000-ohm: -328 to 1472°F (-200 to 800°C)
Thermistor (custom option, consult factory)
  • 0-40kΩ, 0-20kΩ, 0-10kΩ, 0-5kΩ
  • 2.252kΩ and 10kΩ base at 77°F (25°C)
  • Linearization curves built in
Universal Process
  • Process, 0-20mA @ 100Ω, or 0-10VDC @ 20kΩ input impedance; scalable, 0-50mV, 0-1000Ω
  • Process: -1999 to 9999 units

Agency Approval
  • CSA/UL508 NRTL/C, File No.LR91385


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