Micro Motion CDM100 Specifications

Product Data Sheet

Micro Motion® Compact Density Meters

Peak performance precision density meter

PS-001482, Rev H

June 2018

Unparalleled real-world performance

■

Superior application performance via traceable calibrations, performed at combined pressure and
temperature conditions

■

OIML R117-1 approved for MID conformance

■

ISO/IEC accredited calibration

Superior multi-variable I/O, meter health, and application capabilities

■

Flow rate indication (velocity/volume flow) ensures sample integrity

■

Internal diagnostics for fast verification of meter health and installation

■

Application-specific factory configurations ensure fit-for-purpose operation

Installation flexibility and compatibility

■

Fluid, process and environmental effects are minimized to ensure superb measurement confidence

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Supports multiple protocols for connection to DCS, PLC, and flow computers

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Retrofit option available for Micro Motion 7835 and 7845 liquid density meters

■

Optional stainless steel transmitter housing for corrosion resistance in harsh environments

Density
Referred Density
Specific Gravity
Flow rate indication (velocity)
°API
%Concentration
%Alcohol by Volume (ABV)
°Brix, °Baume, °Plato

STATUS

SCROLL

SELECT

0(7(5+($/7+

Compact Density Meter

June 2018

Micro Motion Compact Density Meters

Compact Density Meters use the Micro Motion dual curved-tube meter technology to measure density. These meters use a multi­variable measurement system, designed for fiscal metering of high-value products such as crude oil, refined hydrocarbons, alcohol,
and many aggressive process liquids.

Application configurations

You can preselect an application-specific configuration for your meter from a wide range of options.

Integral transmitter

Supports Time Period Signal (TPS), 2-wire TPS, Analog (4–20 mA), HART, WirelessHART®, and Modbus RS-485 communications.

Meter diagnostics

Ensure measurement health through known density verification (KDV) and other meter and installation diagnostic capabilities.

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Compact Density Meter

Retrofit capabilities

Retrofit option has the same face-to-face dimensions as the Micro Motion 7835 and 7845 density meters.

Thermal insulation

The CDM is available with a soft, weather-proof insulating jacket that is easily fitted to all CDM versions to maintain stable
temperatures and achieve optimal performance.

Accreditation and standards

Accredited calibrations are in compliance with domestic and international standards.

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Compact Density Meter

June 2018

ProLink® III software: a configuration and service tool

ProLink III software is an easy-to-use interface that allows you to view key process variables and diagnostics data for your meter. For
more information on ordering the software, contact your local sales representative or email customer support at

[e-mail].

Operating principle

Tube vibration

■ Dual, parallel tubes vibrate at their natural frequency.

■ The natural frequency changes with the density of the liquid inside the tubes.

Density calibration

■ Micro Motion transmitters accurately measure time period.

■ Measured time periods are converted into density readings using meter calibration coefficients.

■ Minimum of 12 calibration points ensures optimum meter performance.

A. Density (kg/m3)
B. Time period = 1 / frequency
C. [Time period]2 (μs2)

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Compact Density Meter

Flow rate indication (velocity/volume flow)

■ Measuring the twist in the vibrating tubes gives an indication of the liquid flow rate (velocity/volume flow).

Performance specifications

Density measurement

Specification

Accuracy (liquid) ±0.1 kg/m3 (±0.0001 g/cm3) ±0.2 kg/m3 (±0.0002 g/cm3)

Repeatability ±0.02 kg/m3 (±0.00002 g/cm3) ±0.02 kg/m3 (±0.00002 g/cm3)

Operating density range 0–3000 kg/m3 (0–3 g/cm3)

Calibration range 300–1300 kg/m3 (0.3–1.3 g/cm3) 300–1300 kg/m3 (0.3–1.3 g/cm3)

Process temperature effect (corrected)

Sensor maximum working pressure 248 bar (3600 psi) or flange limit 100 bar (1450 psi) or flange limit

Process pressure effect (corrected)

(1) Process temperature effect is the maximum measurement offset due to process fluid temperature changing away from the reference calibration

temperature of 20 °C.

(2) Process pressure effect is the maximum measurement offset due to process fluid pressure changing away from the reference calibration pressure

of 1 bar.

(2)

CDM100P (Peak performance precision
density meter)

(1)

■ ±0.005 kg/m3 per °C

■ ±0.278 kg/m3 per 100 °F

■ ±0.003 kg/m3 per bar

■ ±0.021 kg/m3 per 100 psi

CDM100M (General purpose precision
density meter)

■ TPS transmitter version:0-1000 kg/m
(0–1 g/cm3)

■ Analog/Discrete transmitter versions:
0–3000 kg/m3 (0–3 g/cm3)

■ ±0.015 kg/m3 per °C

■ ±0.834 kg/m3 per 100 °F

■ ±0.006 kg/m3 per bar

■ ±0.042 kg/m3 per 100 psi

Temperature measurement

Specification

Operating temperature range –58 °F to +400 °F (–50 °C to +204 °C)

Integral temperature sensor

Value

■ Traceable calibration

■ Technology: 100 Ω RTD

■ Accuracy: BS1904 Class, DIN 43760 Class A (±0.15 +0.002 x Temp °C)

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Compact Density Meter

Specification Value

Case temperature sensors

(1) Case temperature sensors are used for environmental temperature effect correction in applications where the case temperature measurement

does not need to be traceable and/or accredited. Where accreditation and measurement traceability are required, these sensors are used for
diagnostics purposes only and do not perform any correction on the density measurement.

(1)

■ Technology: 3 x 100 Ω RTD

■ Accuracy: BS1904 Class, DIN 43760 Class B (±0.30 +0.005 x Temp °C)

June 2018

Case pressure

Specification Value

Maximum case working pres­sure

Typical burst pressure (case) 195 bar (2824 psig)

27 bar (389 psig)

Diagnostic flow rate indication (velocity/volume flow)

Expected accuracy is within ±5% of reading.

Typical flow recommendations

Minimum 3 gpm (700 L/hr) 1.5 ft/sec (0.5 m/sec)

Normal 11 gpm (2,500 L/hr) 5 ft/sec (1.5 m/sec)

Maximum 75 gpm (17,000 L/hr) 30 ft/sec (9 m/sec)

Note

For fluids that contain abrasive particles, velocity should be below 10 ft/s (3 m/s).

Flow rate Velocity

Transmitter specifications

Available transmitter versions

For more information on the transmitter outputs and ordering codes, see the product ordering information.

Analog

Output channels

Typical application

■ General purpose measurement

■ DCS/PLC connection

A B C

4–20 mA + HART
(passive)

4–20 mA (passive) Modbus/RS-485

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Processor for remote-mount Model 2700 FOUNDATION fieldbus transmitter

Output channels

Compact Density Meter

Typical application

■ General purpose measurement

■ DCS/PLC connection

A B C

Disabled Disabled Modbus/RS-485

Discrete

Output channels

Typical application

■ General purpose measurement with output
switch

■ DCS/PLC connection

A B C

4–20 mA + HART
(passive)

Time Period Signal (TPS)

Output channels

Typical application

■ Fiscal/Custody Transfer

■ Flow computer connection

The 4-20 mA output cannot be configured to output line density.

A B C

4–20 mA + HART
(passive)

Discrete output Modbus/RS-485

Time Period Signal
(TPS)

Modbus/RS-485

2-wire TPS

Output channels

Typical application

■ Fiscal/Custody Transfer

■ Flow computer connection

For the 2-wire transmitter version, TPS is superimposed on power lines.

A B C

Disabled 4-wire 100 Ω, RTD

Local display

Design

Physical

Features

■ Segmented two-line LCD screen.

■ Can be rotated on transmitter, in 90-degree increments, for ease of viewing.

■ Suitable for hazardous area operation.

■ Optical switch controls for hazardous area configuration and display.

■ Glass lens.

■ Three-color LED indicates meter and alert status.

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Compact Density Meter

Design Features

Functions

■ View process variables.

■ View and acknowledge alerts.

■ Configure mA and RS-485 outputs.

■ Supports Known Density Verification (KDV).

■ Supports multiple languages.

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Process measurement variables

Variables Value

Standard

Derived The derived output variables vary, depending on the application configuration of the meter.

■ Density

■ Time period

■ Temperature

■ Drive gain

■ External temperature input

■ External pressure input

■ Flow rate (velocity/volume flow)

■ Referred density (API Tables 53A, 53B)

■ Referred density (Concentration)

■ Specific gravity (Concentration)

■ %Alcohol by Volume (ABV)

■ Alcohol proof

■ °API

■ °Balling

■ °Baume

■ °Brix

■ °Plato

■ %Mass

■ %Solids

■ °Twaddle

■ User-defined calculation output

Note

■ For the TPS transmitter version, process measurement variables are limited to Time Period, Temperature, and Flow.

■ For the 2-wire transmitter version, process measurement variables are limited to Time Period and Temperature.

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