Need for density compensation? Drexelbrook offers a density compensation module (DCM) for its Universal IV in-line water cut monitor (CM). The module automatically compensates for density changes that may occur in the compensation of products and reduces the calibration requirements due to those changes. Learn more about the density compensation module from Drexelbrook at http://www.drexelbrook.com/Analytical-Products/Universal-IV-CM.aspx

1. Drexelbrook
Universal IV CM Density
www.drexelbrook.com
.

2. Universal IV
Water Cut Meter (BS&W)
With Density Compensation
Analytical Products

3. The Need For Density Compensation?
The Solution – Drexelbrook Universal IV Cut Monitor (BS&W) with Density Comp
• The new Drexelbrook UIV CM utilizes system inputs from the Coriolis/PLC:
 Temperature
 Flow
 Density
• And calculates the corrected value for true water content and maintains overall
system accuracy.
The Problem
• The density or API gravity of crude oil changes (temp, material, region or formation)
• Standard cut monitors (BS&W) mistakenly attribute these changes to water content
• It is commonly known that API can vary +10 API in a short amount of time
• Changes as small as 3 API can cause water cut errors of over .45% resulting in false
diverts or personnel call outs.

4. Drexelbrook Water Cut Meter Family
Drexelbrook CM Standard
(<2000)
Perfect for applications
with:
• Minimal process flow
temperature changes
• Non-varying oil source
with consistent range of
API
• Minimal material changes
Temperature Compensated
Universal IV CM (2014)
Perfect for applications with:
• Wide temperature changes
in the process flow
• Single oil/water source
• Non-varying oil source with
consistent range of API
• Outdoor LACTs applications
• Minimal material and API
changes
Density Compensated
Universal IV CM (2016)
Perfect for applications with:
• Temperature and density
changes in the process oil
flow
• Multiple oil sources
• Changing environmental
conditions, frequent temp
changes
• API changes handled in real
time
Good Better Best

5. Multiple Installation Options
In-Line Spool Piece
Fits standard industry in-line
spool sizes and various flange
configurations
Density Compensation
Module Option
Optional DCM module can be
added to existing installations to
minimize the effects of density
changes in the process flow
Insertion Probe
Reduced installation
costs by directly
mounting in existing
piping

6. Water Cut Monitor Applications
• LACT Skids (Lease Automatic Custody Transfer)
• Pipeline Loading (Transfer of petroleum products from loading sites)
• Truck Unloading Stations (Remote oil & water collection in upstream O&G)
• Dehydration Equipment (Separators/Heater Treaters)
• Lube Oil Systems (Bearing protection)
• Pump Protection Systems
Heater Treater
LACT Skid
Oil-Water Separator

7. System Overview
Density Compensated Water Cut Meter
The Density compensation option is offered as either part of the
overall system configuration or as a remote option to be added
to any standard Drexelbrook Universal UIV Water Cut Meter in
the field
Model UDO System
Model UDR
Option
Customer Supplied
Density Measurement

8. Benefits of Temperature & Density
Compensation
• Minimizes the need to recalibrate
the cut monitor between truck
loads at remote collection sites
 Minimize Recalibrations
 Lower Downtime
 Faster Load/Unload Cycles
• More repeatable performance load
to load insuring accuracy of the
custody transfer
• Minimize diverts on LACT
installations
• Stability of the measurement is
guaranteed over a wide
temperature range
• Up to 50% better measurement
performance vs standard water cut
monitors
Up to 50% Increase
in Accuracy

9. Specifications UIV CM
Model UDO System or Model UDR Retrofit
Density Compensated Water Cut Meter
Technology
RF Admittance / Capacitance
Supply Voltage
19-30VDC, 4-wire system
Output/Digital Protocol
4-20mA, HART
Compatible with HART® 7
Accuracy and Resolution
Water Cut
Range Variance % wc* Resolution**
0 to 1% +/- 0.03 0.0002
0 to 5% +/- 0.04 0.0009
Load Resistance
Maximum 550 ohms at 24 VDC
Minimum 250 ohms for HART protocol
Ambient Temperature
-40°C to 75°C (-40°F to 167°F)
Process Temperature (Compensated)
Up 232°C (450°F) – Transmitter will
compensate for the effects of temperature
when the water is in liquid state (Eg 0oC to
100oC at ambient pressure)
* The measurement accuracy of an inline, dynamic
water cut measurement is dependent upon many
process variables including: oil dielectric consistency,
fluid velocity at the sample point, mounting geometry
and homogeneity of the oil/water emulsion. The
values above represent nominal water cut
measurement variances for a properly installed sensor
under consistent measurement point conditions.
** The smallest water cut step that the instrument
can resolve
Process Pressure
Up 103 bar (1,500 psi), probe dependent
Density (Compensated)
Transmitter will compensate for the effects of
changing density in the process flow
System or Module Option
The density compensation module (DCM) is
offered as part of the “UDO” System configuration
or it can be purchased as a remote module option
“UDR” to be added to any standard Drexelbrook
water cut meter in the field
Relay Output
SPST Relay, 5A/30 VDC; 5A/250 VAC
Max Switching Capacity: 150W, 2000 VA
Max Contact Load (DC): 100mA @ 12 VDC
Process Connection
NPT, ANSI, and more upon request
Remote Configuration for UDR Retrofit Module
Consult factory for max cable length for remote
configuration
Response Time
350 msec nominal (no damping applied)
1-90 seconds programmable damping time
Supply Voltage Effect : 0.2% of full scale max
Start-Up Time : < 12 seconds
Configuration and Calibration
Standard LCD display and keypad are built-in
STExplorer™ PC-based software (free
download)
Emission and Surge Protection
Compliant with IEC6100-4.2, 3, 4, 6, 8
Compliant with CISPR11 Group I, Class B
Approvals
Intrinsically Safe (IS)
Explosion Proof (XP) without IS barrier
FM, FMc, ATEX, IECEx
CE Mark

10. Ordering Information
Model UDO System
Density Compensated Water Cut Meter System
U
D0
1
0
9
A
B
3
4
5
0
1
0
1
0
1
000
XXX
ZZZ
0
A
B
F
G
Z
U DO 1 0 9 3 0 0 0 - XXX - A
IECEx d with Density Cut Monitor
Base Model Number
Universal IV Base Model
System Type
Density Cut Monitor model: 100 KHz, 0° Phase
Digital Protocols
Approvals
FM/FMc XP with Density Cut Monitor
ATEX d with Density Cut Monitor
4-20mA HART
Future Use
Future Use
Electrical Connection
Surge / Noise Suppression
Integral / Remote options
Dual Seal Option
Special Software
3/4" NPT without external ground with Density Cut Monitor
M20 with external ground / Equipotential Bonding with Density Cut Monitor
3/4" NPT with external ground / Equipotential Bonding with Density Cut Monitor
No additional filtering required
Signal RFI (Integral or Remote)
Remote configuration
Without Dual Seal Option
With Dual Seal Option
Remote system
Sensing Element
Part Number Example
Heavy Oil 0 to 1%
Heavy Oil 0 to 5%
Special Software
None
Integral
Consult Factory for All Probe Configuration Options
Special Sensing Element
Light Oil 0 to 1%
Light Oil 0 to 5%

11. Ordering Information
Model UDR Retrofit Module
Density Compensated Water Cut Meter Retrofit
Note: Cut monitor must be set to range 1 for all retrofit
installations
U
DR
1
0
9
A
B
3
4
5
0
1
0
000
0
U DR 1 0 9 3 0 1 0 - 000 - 0
Base Model Number
Universal IV Base Model
System Type
DR=Density Cut Monitor model: 100 KHz, 0° Phase, Retrofit
Surge / Noise Suppression
Digital Protocols
Approvals
FM/FMc XP with Density Cut Monitor
ATEX d with Density Cut Monitor
IECEx d with Density Cut Monitor
Electrical Connection
3/4" NPT without external ground with Density Cut Monitor
M20 with external ground / Equipotential Bonding with Density Cut Monitor
3/4" NPT with external ground / Equipotential Bonding with Density Cut Monitor
4 Wire 4-20mA w/HART
Future Use
Future Use
Special Software
None
Sensing Element
None
No additional filtering required
Integral / Remote options
Remote Only for Retrofit Module
Dual Seal Option
None

12. Typical Installation of DCM System

13. Typical Wiring of DCM System

14. DCM Interface to PLC
• The primary method for retrieving the density data is through the PLC
• This is a Modbus connection between the 2 devices with the DCM
configured either as a master or a slave
• The DCM has an Auto-detect feature that insures successful connectivity
between the 2 devices
• Installations will require knowledgeable personnel in PLC and Modbus
communications
Already Existing System at LACT
DCM to PLC

15. System Configuration
Keypad or STExplorerTM (PC Utility Software)
There are two ways to configure and calibrate the Drexelbrook Cut Monitor system. Via the
onboard display keypad or through the STExplorerTM PC software.
1. To use the onboard keypad customers must follow the instructions in the manual. The
menu tree and configuration menu tables will guide you through display prompts to make
changes.
2. STExplorerTM provides a simple way to configure and calibrate the Drexelbrook cut monitor
system using a PC.

16. STExplorer
PC Utility Software
STExplorerTM is a free PC software utility designed by AMETEK to provide connectivity
and configuration functionality for the Drexelbrook IV Cut Monitor with the Density
Compensation Module (DCM). STExplorerTM is the successor to HRTWin. It will also be
used for firmware updates to the DCM (Bootloader Capability).
Minimum Hardware Requirements
Operating System: Windows 7 or greater
CPU: Pentium Processor at 1 GHZ
RAM: 1 GB
Hard Drive: 25 MB available disk space
Download the Beta version of the STExplorerTM files from the Drexelbrook.com
website. Follow the Software Download links and select STExplorerTM Installer Files.
Once the files are relocated to your PC, run stexplorer.exe and follow the onscreen
instructions.

17. STExplorer
Using the PC Software
Using the software is a simple 4 step process.
1. Add your device (provides a
communication connection)
2. Select the Variable
Handler Interface
3. Select & load the appropriate
list for whatever functionality you
want to perform
4. Read and write data into the DCM
as required to measure, analyze,
calibrate or configure the device

18. Universal IV (BS&W) with Density Comp
Value Proposition
• Density compensation in the water cut measurement improves ROI
• Improved accuracy: Up to 50% better measurement performance vs standard
water cut monitors
 Minimize Need for Re-calibration
 Lower Downtime
 Faster Load/Unload Cycles
• More repeatable performance load to load insuring accuracy of the custody
transfer
• Minimize diverts on LACT installations
• No worries: The stability of the measurement is insured over a wide temperature
and density range