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  • Liquid Density Analyzer-DM8C/VD6

Liquid Density Analyzer-DM8C/VD6

2016-05-27 15:18:47

Description:

The DM8 liquid density analyzer measures liquid density of general process liquids with high sensitivity and excellent stability. It has a measuring density range of 0 to 2.0 g/cm3, and unaffected by flow rate and viscosity. Besides general-purpose sensor, sanitary and explosionproof sensor are also available. The DM8 is a vibration type liquid density analyzer and its converter incorporates a microprocessor to directly convert frequency signals from the sensor into density values and display them and is provided with a variety of functions such as one-touch calibration, self diagnosis, digital output.……

Description

DM8C/VD6

In 1967, Yokogawa developed the model VD6 vibration type liquid density analyzer in response to user requests for an online density analyzer that could be used in process automation. This was an important development in the instrumentation field, because density is a fundamental physical quantity, and its accurate measurement is important to almost all processes. The VD6 density analyzer has gone on to develop an excellent reputation as a highly stable, high sensitivity meter.

The new DM8 vibration type liquid density analyzer is a highly reliable, multi-function meter that builds on the experience gained with the VD6. It takes advantage of the latest computer technology to integrate a wide range of sensor techniques. Its converter incorporates a microprocessor that directly converts sensor frequency signals into density values for display. It is provided with a variety of functions such as one-touch calibration, self diagnosis and digital output (RS-232C).

The DM8 is a vibration type liquid density analyzer and its converter incorporates a microprocessor to directly convert frequency signals from the sensor into density values and display them and is provided with a variety of functions such as one-touch calibration, self diagnosis, digital output.

The DM8 liquid density analyzer measures liquid density of general process liquids with high sensitivity and excellent stability. It has a measuring density range of 0 to 2.0 g/cm3, and unaffected by flow rate and viscosity. Besides general-purpose sensor, sanitary and explosionproof sensor are also available.

  • High sensitivity and stability.

  • One touch calibration with a standard calibrating solution.

  • Free setting of measuring range in the field.

  • Failure alarm display and output.

  • Outdoor installation of converter.

Measurement objectLiquid density
Measurement principleVibration density measurement
Measurement rangeDensity :0.5 to 2.0 g/cm3
Measuring liquid temperature-10 to 100℃
Measuring liquid pressure2 MPa G or less
Withstandable pressure4.9 MPa G
Output signalAnalog output:4 to 20 mA DC (load resistance 550 Ω or less), and 0 to 1 V DC (load resistance 250 kΩ or more), isolated output.
Digital output: RS-232C
Output signal span0.05 to 0.5 g/cm3 settable
Reference temperature set range0 to 100℃ (in increments or decrements of 1℃)
Contact output on failureOne output
Settable range for temperature coefficient0 to 0.002 g/cm3/℃
Calibration procedureOne-touch calibration by strong calibration liquid density (one-point calibration)
Ambient temperature-10 to 55℃
Case constructionDust and rain proof construction
Power supply90 to 132 V AC or 180 to 264 V AC, 50/60 Hz
WeightApprox. 7.5 kg (Converter), approx. 12.0 kg (Detector)
Linearity±0.5 % of span (when span is 0.2 g/cm3 or less)
Repeatability5 x 10-4 g/cm3 (for digital output)
1 % of span (for analog output)