Hansen Technologies WLT Specifications, Applications, Service Instructions & Parts

Wire level transducer sensor and controller for use in 4-20 ma control loops for refrigerant level control and monitoring

Advertisement

Quick Links

WIRE LEVEL
TRANSDUCER
SENSOR AND CONTROLLER
INTRODUCTION
Hansen Level Transducer Sensors are reliable, well
engineered electronic level monitoring devices.
provide a computer compatible 4-20 mA (milliamp) output
signal proportional to liquid level. The sensor consists
of a compact, electronic transmitter in a watertight
housing assembled on top of a rugged mechanical
base. The wire element is an insulated stainless-steel
wire and can be mounted directly in a level column. If
it needs to be installed in a vessel, then an inner pipe
is required.
Typical applications include: vertical
vessels, pilot receivers and pump accumulators. These
sensors are intended to be operating control device
should never be used as safety devices. The sensor
can be installed in refrigeration systems and similar
demanding applications with high pressure fluids.
All versions emit a 4-20mA analog signal via the M12
connector and field cable.
There are two different versions of transducer sensors.
WLT: 2-wire Level Transducer Sensor
WLT-C: 3-wire Level Transducer Sensor with
integrated Motorized Valve (MCV) controller.
This bulletin will cover the WLT-C which can be
used for new installations, and direct VLT + PXVC-L
replacement for MCV control. For the quick start
guide see WLT-C-QSG
WLT-C
Specifications, Applications,
Service Instructions & Parts
TRANSDUCER SENSOR
for use in 4-20 mA control
loops for refrigerant level
control and monitoring
KEY FEATURES
They
ADDITIONAL FEATURES
Specifically designed for refrigeration systems.
Flexible wire element adjustable to length.
Active length up to 157" (4000mm).
One transducer sensor fits most legacy probe lengths.
Compact design minimizes shipping cost.
Direct replacement for VLT probe + PXVC-L controller.
Suitable for ammonia and Hansen approved Halocarbons.
WLT-C
WIRE LEVEL
AND CONTROLLER
Bulletin P130
December 2023

Advertisement

Table of Contents
loading

Summary of Contents for Hansen Technologies WLT

  • Page 1 Specifically designed for refrigeration systems. integrated Motorized Valve (MCV) controller. Flexible wire element adjustable to length. This bulletin will cover the WLT-C which can be Active length up to 157” (4000mm). used for new installations, and direct VLT + PXVC-L One transducer sensor fits most legacy probe lengths.
  • Page 2: Installation

    MATERIAL SPECIFICATIONS Follow good piping practice and refrigeration system maintenance to avoid oil accumulation inside the level TRANSDUCER SENSOR column. Equalizer lines and valves should be positioned as shown in the Level Column Piping Installation diagram Signal Output: 4-20 mA, DC, isolated on page 3.It is recommended that a high level float Input Power: 24 VDC or VAC ±...
  • Page 3: Sensor Connections

    *USB Configuration Cable Signal cable connected to: * MCV (motorized control valve) “The WLT-C sensor can provide a signal to a PLC via the M12 connection. An external power supply is wired to the M12 connection to provide voltage to the sensor.
  • Page 4: Installation Steps

    INSTALLATION STEPS 5. Put the wire all the way through the counter- Follow the steps below to install, wire, configure, and weight until it protrudes (1/4” to 1/2”) and tighten (approx use the sensor in a level column. The sensor length is range 3.5-4.0in-lbs) the two set screws with the 2.5mm determined by level column height.
  • Page 5 INSTALLATION STEPS - CONTINUED 8. Start the program to configure the Basic settings tab. For the WLT-C the Control mode should automatically be detected and the following parameters will need to be populated. See page 9 for additional information and settings.
  • Page 6 9. Set up the advanced settings of the probe and save to sensor. Recomended settings: Ramp startup = 5 Valve speed open = 5 Valve speed Closed = 5 Min valve opening = 0 Max valve opening = 100 10. Disconnect the programming cable. Connect the 16ft (5m) sensor field cable to the M12 connector on the electronic transmitter.
  • Page 7 TYPICAL WIRING: NEW INSTALLATIONS AND DIRECT REPLACEMENT OF VLT +PXVC-L WLT-C TO PLC WITH INTEGRATED POWER SOURCE AND MCV: 3-WIRE 4-20MA OUTPUT and MCV 3 and MCV 3 WLT-C TO CONTROLLER/PLC WITH EXTERNAL POWER SOURCE AND MCV: 3-WIRE 4-20MA OUTPUT...
  • Page 8 The splitter box is not suited normal operation, but only for installation and modification. The splitter box is connected to the M12 plug on the WLT-C sensor and then both the pc and the normal M12 plug can be connected. See wiring diagram below.
  • Page 9: Connecting To The Sensor

    SETTING UP THE SENSOR the Hansen Tool, and the steps are as follows: Simulating tools  WLT tool  update desired fields Hansen software tool has three configuration To save the file:...
  • Page 10 BASIC SETTINGS: CONTROL (WLT-C) The Basic Settings screen contains the necessary selections for all sensors. When connected to the sensor, some settings are grayed out and cannot be changed. If changes are desired, see Adjusting Settings on page 9. Setpoint level in% (control mode only) Desired level:...
  • Page 11 ADVANCED SETTINGS (WLT-C) If changes are desired, see Adjusting Settings on page 6. Adjust parameters for the valve control Ramp startup in sec (control mode only) High or Low Alarm: High alarm triggers when the level gets above the Alarm setting % and Low...
  • Page 12 DIAGNOSTICS & SENSOR CALIBRATION VIA HANSEN TOOL If the sensor is operating in one of the pre-defined refrigerants it is delivered factory calibrated and does not normally need further calibration. If the refrigerant is not in the list, perform the calibration below. Make sure the electronic transmitter is mounted on the mechanical wire in the column.
  • Page 13 LEVEL COLUMN DIMENSIONS LEVEL COLUMN DIMENSIONS “ “ “ “ “ “ “ “ “ “ “ “ “ “ “ “ “ “ “ COLUMN EQUALIZER FLOAT SIGHT GLASS OVERALL CATALOG ACTIVE LEGS SWITCH LEG LOCATION HEIGHT NUMBER LENGTH P130 DECEMBER 2023 December...
  • Page 14: Probe Dimensions

    PROBE DIMENSIONS SENSOR DIMENSIONS 2.85'' (72 MM) 2.02'' (22 MM) 5.31'' (135 MM) (APPROX INSTALLED 5.69'' HEIGHT) Ø.78'' (145 MM) (22 MM) 7.62'' (194 MM) 3/4''-14 NPT 1.00'' (26 MM) 5.78'' (147 MM) P130 DECEMBER 2023 P129 June 2023...
  • Page 15: Led Indication

    LED INDICATION • Green LED indicates 24 V DC supply; it flashes during operation. If “run-in” is not used, this function must be deactivated in the tool. • Yellow LED indicates control. The flashing sequence indicates if the valve is closing or opening. •...
  • Page 16 681 Commerce Street Burr Ridge, Illinois 60527 USA Tel: 630.325.1565 Fax: 630.325.1572 Toll: 866.4HANSEN Email: sales@hantech.com Web: www.hantech.com USA ∙ Asia ∙ Europe ∙ India ∙ Latin A merica ∙ Middle East © 2023 Hansen Technologies Corporation P130 DECEMBER 2023 December...

This manual is also suitable for:

Wlt-c

Table of Contents