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Products: Charge-to-Mass Ratio Test System

Trek's Charge-to-Mass Ratio System (Model 210HS-3) is a portable Q/m analyzer which provides repeatable high accuracy toner charge measurements. This unit can be used directly on the production line as well as in the laboratory and employs unique technology to avoid measurement errors that can occur with other "blow-off" systems.

TREK Model 210HS-3 Q/m Test System

Trek offers a unique, small, and portable Q/m analyzer which utilizes the “draw-off” toner transfer method to yield repeatable high accuracy toner charge measurements. The Trek Model 210HS-3 Charge-to-Mass Ratio (Q/m) Test System* is used to quickly and accurately determine the charge-to-mass ratio characteristics of both single and dual component electrophotographic toners and other charged particulates. Interchangeable mesh filters accommodate various sizes of charged particles. The system is highly portable for use directly on the production line as well as in the laboratory.

The Trek Model 210HS-3 system employs a unique specimen separation and transfer technique which avoids the creation of measurement errors due to the undesired additional charging of the toner as caused by the rapid air movement associated with "blow-off" type measurement systems.

The Trek Model 210HS-3 is configured as a separate main indicator unit, a plug-in sample cell unit, and a plug-in absorption nozzle unit to allow for different configurations in response to various user applications. A two position switch selects pump strength for normal or high application needs, such as for measuring charge on single component toners (when stronger suction is required).

* Measuring toner mass requires the use of a weigh scale which is not included in the Charge-to-Mass Ratio Test System.

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PERFORMANCE

  • Measurement Range
    0 to ±2 microcoulomb full scale (other ranges optionally available.)
  • Measurement Resolution
    0.001 µC (1 nC).
  • Accuracy at Monitor Output
    Better than ±2% of full scale.

    Accuracy at DPM Display Output
    Better than 0.25% of full scale (±5 nC).
  • Stability
    • Drift with Time
      Less than ±0.005 nC/s.
    • Drift with Temperature
      Less than 200 ppm/°C,
      over the range of 15 °C to 35 °C.
  • Vacuum Pressure
    10 kPa.
  • Pump
    At 60 Hz Line Frequency
    Maximum Draw-off Pressure
    1.0 ±0.2 MPa (10.2 kg f /cm²).
    Maximum Draw-off Rate
    9.8 ±1.5 liters/minute.
    Maximum Suction Pressure
    0.067 MPa (0.67kg f /cm²).

    Pump
    At 50 Hz Line Frequency
    Maximum Draw-off Pressure
    1.0 ±0.2 MPa (10.2 kg f /cm²).
    Maximum Draw-off Rate
    10.2 ±1.5 liters/minute.
    Maximum Suction Pressure
    0.067 MPa (0.67 kg f /cm²).
  • Absorption (Nozzle Unit) Volume
    170.0 mL3.

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PRODUCT FEATURES

Front Panel Features

Pump Selection Switch
Selects either Normal pressure setting or High pressure setting.

  • Input 1 Connector
    A BNC connector for connecting the Absorption Nozzle Unit to the Main Indicator Unit.
    Input 2 Connector
    A BNC connector for connecting the Sample Cell Case to the Main Indicator Unit.

    Air Connector
    A connector for connection of the air hose of the Absorption Nozzle Unit.
    Reset 1 Switch
    A switch to reset the coulombmeter for the Absorption Nozzle Unit to zero.
    Reset 2 Switch
    A switch to reset the coulombmeter for the Sample Cell Case to zero.
    Display 1
    A display to indicate the charge transfer to the Faraday cage in the
    Absorption Nozzle Unit.
    Display 2
    A display to indicate the charge transfer from the Faraday cage in
    the Sample Cell Case.

Rear Panel Featues

  • Output 1
    A voltage output monitor which indicates the charge transfer to
    the Faraday cage in the Absorption Nozzle Unit.
    Scale Factor
    1 V/uC.
    Accuracy
    Better than ±2% of full scale.

    Output 2
    A voltage output monitor which indicates the charge transfer from
    the Faraday cage in the Sample Cell Case.
    Scale Factor
    1 V/uC.
    Accuracy
    Better than ±2% of full scale.

    Air Outlet
    Exit path for air.

    Ground Connector
    Threaded ground screw.

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ACCESSORIES

  • Accessories Supplied
    • Screw driver, plastic wrench, extra silicon tubes, extra silicon tubes, Type #2 filter papers (H6001), extra No. 400 mesh screens, line cord, and manual.
    • Nozzle Filter Section
      Nozzle Filter set, Filter Case, Nozzle Hose, Filter Case Stopper, and silicon tubes.
    • Cell Case Section
      Sample Cell Case (with Cell Case, Cell Case Stand and Cell Case Stopper), and No. 400 stainless steel mesh screens.
  • Accessories Available
    • Carrying case.

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GENERAL

  • Main Indicator Unit
    • Dimensions
      235 mm H x 285 mm W x 390 mm D
      (9.25" H x 11.8" W x 15.4" D).
    • Weight
      10 kg (22 lb).
    • Power Requirements
      Factory set for one of three voltage ranges:
      100 V AC, 115 V AC, or 230 V AC at 48 to 63 Hz
      (specify when ordering).
  • Sample Cell Case
    • Dimensions
      40 mm H x 120 mm W x 120 mm D
      (1.57" H x 4.72" W x 4.72" D).
    • Weight
      0.5 kg (1.1 lb).
    • Stainless Steel Mesh (supplied)
      Plain Woven No. 400
      28.7 mm diameter,
      33 um opening,
      27.8% opening ratio.
  • Absorption Nozzle Unit
    • Dimensions
      1600 mm L (63" L).
    • Weight
      350 g (0.8 lb).
    • Operating Conditions
      Temperature
      5 °C to 40 °C.

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CERTIFICATION

TREK, INC. certifies that every Model 210HS-3 Q/m Test system is tested and calibrated to specifications using measurement equipment traceable to the National Institute of Standards and Technology or traceable to consensus standards.

RoHS compliant (EU). CE compliant.

All specifications are subject to change.

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