Surface Depth and Time Recorder (SDR)


Surface Depth and Time Recorder (SDR)


The Surface Depth and Time Recorder (SDR) is a ruggedized depth and speed data recorder for Slickline and Coiled Tubing memory logging. However, it may be used for other applications where recording trips in and out the whole will improve the process. The depth from a shaft encoder is recorded against time together with other analog channels such as wireline tension, wellhead pressure, or even a flowmeter. The SDR is intrinsically safe (IS).
The purpose of the SDR is to supply Data logging against time, Depth/time data for merging in Memory tools, Real-time display of depth, and Line speed for the winch operator.
Depth, Time, Cable Speed, and Tension Cable are displayed in real time. In addition, other parameters, such as analog and frequency channels, are also displayed.
The system has two modes: Configuration and Logging Mode.


General Specs SDR
Units English /Metric
Temperature Rating -20ºC to 70ºC
Dimensions 11.81”L x 8.87” W x 5.18”H (300.00mm x 225.00mm x 132.00 mm)
Case Characteristics O-ring seal. Watertight, crushproof, and dustproof.
Rating P67/MIL STD – 810 G / DEF STAN 81-41
External Connections IP68 – Dust Tight, Waterproof
USB Connector Support USB2. SDR can operate as a Standalone unit or/and connect to a laptop with the Warrior software for Real-time.
Alarm Audible Alarm, 2.9 KHz. Alarms are defined by the user for tension, different depths, and cable speeds.
Calibrations User calibrations for the encoder, analog channels, and frequency channels.
Display 320 x 240 pixel Transflective Display LCD, High contrast, High, resolution, 400uW., Readable in any lighting condition. Resistance to vibration 2G
Key Pad Touch buttons
Memory Flash memory to save user calibrations 256KB. Data Storage – USB flash drive 2.0
Depth Encoder DIN 19234 Low power encoder fully supported. Supply 5VDC. Other encoders can be used.
Tension Tension transducer 4mA to 20mA, 12VDC
Auxiliary Channels 3 analog inputs (4mA to 20mA, 0-5VDC), Two Frequency inputs, 3 Digital outputs.
Sample Rate 50mS.


  • 4x Duracell Procell or Energizer Max MN1300 Alkaline ‘D’- cell batteries Typically 3 to 6 hr operation.
  • 4x 3.6V, 19Ah lithium D-type batteries, typically 50 hrs @ 25 deg C.
  • 12VDC battery Truck, or
  • 12V AC/DC power adapter.
Key Pad Touch buttons
Software Stand along / Warrior compatible


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