Dresser 10C25 K Series User manual

© 2018 Natural Gas Solutions North America, LLC –All Rights Reserved.
Dresser™ Model 10C25 Series K Meter
Installation, Operation, and Maintenance Manual

Dresser Model 10C25 Series K Installation, Operation, and Maintenance Manual
© 2018 Natural Gas Solutions North America, LLC Page 2 of 74
Contents
1Introduction .....................................................................................................................4
2Overview..........................................................................................................................4
2.1 Operating Principle..................................................................................................................... 5
2.2 Performance Characteristics ...................................................................................................... 5
2.3 Features...................................................................................................................................... 5
3Receiving, Handling, and Storage......................................................................................6
3.1 At Time of Delivery ..................................................................................................................... 6
3.2 Storage........................................................................................................................................ 6
4Parts Identification...........................................................................................................7
4.1 Meter Display ............................................................................................................................. 7
4.2 Flow Indicator........................................................................................................................... 10
5Problems with Installation or Operation .........................................................................10
6Meter Installation...........................................................................................................11
6.1 Preinstallation Considerations ................................................................................................. 11
6.2 Placing Meter in Line ................................................................................................................ 14
7Meter Startup ................................................................................................................15
8Downstream Leak Tests..................................................................................................16
8.1 Flow Indicator Method............................................................................................................. 17
8.2 Electronic Method –Magnetic Interface ................................................................................. 17
8.3 Electronic Method –MeterWare Interface.............................................................................. 18
9AMR Installation.............................................................................................................19
10 Pulse Output Connections ..............................................................................................24
10.1 Pulse Output Allocation Settings and Testing .......................................................................... 24
10.2 Wiring Instructions for Hazardous Locations ........................................................................... 25
11 Meter Operation ............................................................................................................28
11.1 MeterWare Software Information ........................................................................................... 28
11.2 Volume Measurement.............................................................................................................. 28
11.3 Temperature Measurement..................................................................................................... 29
11.4 Flow Rate Measurement .......................................................................................................... 30
11.5 Faults and Alarms ..................................................................................................................... 30

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11.6 Logging Features....................................................................................................................... 33
12 Meter Maintenance........................................................................................................36
12.1 Meter Lubrication..................................................................................................................... 36
12.2 Meter Leveling.......................................................................................................................... 36
12.3 Meter and Digital Index Cleaning ............................................................................................. 36
12.4 Digital Index Replacement........................................................................................................ 36
12.5 Temperature Probe Insertion or Replacement ........................................................................ 39
12.6 Battery Maintenance................................................................................................................ 39
12.7 Removing the Meter from Service ........................................................................................... 45
13 Testing Procedure ..........................................................................................................46
13.1 Prover Test Mode Configuration.............................................................................................. 46
13.2 Proving with the Honeywell SNAP Prover ................................................................................ 49
13.3 Testing Modes .......................................................................................................................... 53
13.4 Proving with Dresser Model 5 Transfer Prover ........................................................................ 54
14 Differential Testing.........................................................................................................57
14.1 Establishing Baseline Curves .................................................................................................... 58
14.2 Pressure Differential Test Procedure ....................................................................................... 59
15 Upgrading Digital Index Firmware...................................................................................61
16 Troubleshooting .............................................................................................................64
17 Specifications .................................................................................................................65
18 Meter Capacity...............................................................................................................67
19 Warranty........................................................................................................................68

Dresser Model 10C25 Series K Installation, Operation, and Maintenance Manual
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1Introduction
This manual provides information for installing, testing, operating, and maintaining the Dresser 10C25
Series K Digital Index non-compensated meter (10C25 DI) and the 10C25 Temperature Compensated
Digital Index meter (10C25 DI-T). Please read the entire manual for information about how to properly
and safely install, use, and maintain the meter and some of its accessories.
This manual provides recommendations when no established company procedure or practice is available.
The following additional resources are available:
•The Dresser MeterWare Software Manual, which contains detailed information about the meter’s
digital index software
•An Installation Supplement guide, which ships with the meter
Manuals are available by request or online at www.dresserngs.com.
2Overview
The Dresser 10C25 Series K (DI/DI-T) meter continues the Dresser legacy of superior long-term rotary
meter performance in a compact oil-free design.
The 10C25 meter body offers:
•A maximum flow rate of 1,000 acfh.
•An MAOP (maximum allowable operating pressure) of 25 psig.
•A functional and aesthetic design for situations in which a larger meter may draw unwanted
attention.
•Bi-directional flow capability that allows for more compact meter set designs.
•Direct replacement for the Dresser Series Z 5C15 and 8C15 ROOTS meters.
The 10C25 digital indexes offer:
•Innovative interconnection for AMR (automatic meter reading) devices pulse outputs including ease
of mounting and IP-68 watertight connections.
•A fast, two (2)-minute proving capability on Dresser Model 5 Transfer Provers and on common sonic
nozzle bench provers.
•Two (2) programmable pulse output signals.
•Dedicated alarm output.
•150 days of hourly logs stored in non-volatile memory.
•Programmable fixed-factor pressure correction.
The Dresser MeterWare software provides the user interface to the 10C25 digital indexes with an IrDA
(infrared) communication interface and is compatible with multiple Dresser metering products.

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2.1 Operating Principle
The Dresser meter is designed to measure the volume of gases and gas mixtures with a high degree of
accuracy. The industry accepted rotary type positive displacement operating principle supports
permanent, non-adjustable accuracy by using precision machined two-lobe impellers encased within a
rigid measuring chamber. Measurement accuracy is not affected by changes in gas specific gravity,
pressure, or fluctuating flow.
Figure 1: Two (2) contra-rotating impellers of two-lobe or ‘figure 8’contour
As shown in Figure 1, two (2) contra-rotating impellers of two-lobe or ‘figure 8’design are encased within
a rigid measuring chamber that has inlet and outlet connections on opposite sides. Precision machined
timing gears keep the impellers in the correct relative position. Optimal operating clearances between the
impellers, cylinder, and headplates provide a continuous, non-contacting seal.
This design effectively isolates the gas at the meter inlet from the gas at the outlet. This enables a very
small pressure drop across the impellers to cause them to rotate.
2.2 Performance Characteristics
The 10C25 rotary meter has the following performance characteristics:
•Manufactured in accordance with the American National Standard specification ANSI/ASC-B109.3 for
rotary type gas displacement meters
•Not affected by low or varying line pressures
•Suitable for use at pressures ranging from a few inches of w. c. (water column) to the MAOP of 25 psig
•Mounts in the gas line like the Dresser™ Series Z 5C15 and 8C15 meters
2.3 Features
The 10C25 has the following features:
•Both horizontal (side) and vertical (top) mounting capability
•Oil-less with permanently lubricated bearings
•RPM (revolutions per minute) Flow Indicator to indicate flow
•Differential testing capability
•Fast prove feature available
•Compatible with common AMR/AMI devices that require pulse input
•Compensated and non-compensated versions available
•IP66 to IP68 rating (depending on pulse output configuration)
•Multiple connection types, including Sprague #3/#4, 30 LT, 45 LT, and 1-1/2 inch FNPT
For additional specifications, refer to Section 17.

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3Receiving, Handling, and Storage
Follow the steps and recommendations in this section to ensure your meter and its accessories are ready
for installation and use.
3.1 At Time of Delivery
Perform the following steps when you receive your shipment:
1. Check the packing list to verify all items have been received.
2. Inspect each item for damage and, if necessary:
a. Record any visible damage or shortages on the delivery record.
b. File a claim with the carrier.
c. Immediately notify your Dresser meter supplier.

Note:
•Do not accept any shipment that appears damaged without immediately inspecting the
contents for damage.
•Check the meter for free rotation soon after arrival. Internal working parts might be
damaged without obvious external evidence. To check the meter, blow dry air lightly into
the meter inlet to verify the free rotation of the impellers.
3.2 Storage
If the product is not tested or installed soon after it is received, store it in a dry location in the original
shipping container for protection within the meter’s operating temperature range of -40°F to 140°F
(-40°C to 60°C).

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4Parts Identification
Figure 2: Parts identification
4.1 Meter Display
View the meter information on its LCD (liquid-crystal display) screen.
4.1.1 Scrolling Through the Screens
To scroll through the different screens, swipe a magnet across the black dot to the right of the LCD screen
on the meter’s label, as shown in Figure 3.

Note: The screen will not change if the magnet is swiped on another area of the label.
Figure 3: Magnet used to change screens
Flow Indicator
(under sight glass)
LCD screen
Pulse output connector
IR window
IrDA cable holder slot
10C25 meter inlets
AMR meter bracket
mounting holes

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The magnet can be purchased as part of the Communications Kit (refer to Figure 85) or individually by
part number, as shown in Table 1. Contact the Factory for pricing.
Table 1: Magnet Part Numbers
Part
Number (P/N)
Communications Kit
060542-000
Individual Magnet
060541-000
4.1.2 LCD Screen Displays
The home or default screen displays either Compensated Volume or Non-Compensated Volume,
depending on the meter version and customer configuration. After approximately thirty (30) seconds of
inactivity, the home screen displays.
Swipe the magnet vertically over the black dot on the meter’s label until the screen you want to view
displays. The screens always display in the order shown in Table 2. Depending on the meter configuration,
some screens might not display.
After the value’s name or parameter displays for three to five (3–5) seconds, the screen displays the
parameter’s value.

Note: Use the Dresser MeterWare software to configure parameters on the screens by
selecting or clearing the checkbox for the parameter to be displayed (refer to the Dresser
MeterWare Software Manual).
Table 2: Scrolling Sequence of LCD Screens
Displayed on Screen
Represents
Function
COMPENSATED VOLUME
Compensated Volume
Displays non-compensated volume that has been
corrected to standard conditions
NON-COMPENSATED
VOLUME
Non-Compensated Volume
Displays actual non-compensated volume
LINETEMP
Line Temperature
Displays live line temperature
FIXED P
Fixed Line Pressure
Displays the line pressure as entered by the user
FLOWRATE
Flow Rate
Displays uncorrected flow rate (average of latest
thirty (30) seconds of captured data)
MTR INFO
Meter Info
Displays meter size and type
LEAKTEST
Leak Test
Performs a functional test to determine low flow
leakage downstream of the meter
PROVE CV
Compensated Prove Mode
Allows for compensated volume accuracy testing
PROVE UV
Non-Compensated Prove Mode
Allows for non-compensated volume accuracy
testing
BATTVOLT
Battery Voltage
Displays battery voltage
REM LIFE
Remaining Battery Life
Calculates remaining battery life and displays it in
months
FIRM REV
Firmware Revision
Displays the current firmware revision
LCD TEST
LCD Test
Tests all display segments

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Displayed on Screen
Represents
Function
BATT.CHNG
Change Battery
Saves data to memory and resets remaining battery
life to 240 months
COMPFCTR
Compensation Factor
Displays the factor applied to non-compensated
volume to calculate compensated volume
COMPENSATED RESIDUAL
Compensated Residual
Displays extended compensated volume data
beyond the value displayed on the compensated
volume screen
NON-COMPENSATED
RESIDUAL
Non-Compensated Residual
Displays extended non-compensated volume data
beyond the value displayed on the
non-compensated volume screen
BASE T
Base Temperature
Displays base temperature as entered by the user
BASE P
Base Pressure
Displays base pressure as entered by the user
PRESS FA
Fixed Pressure Factor
Displays the fixed pressure factor
NCVOLFLT
Non-Compensated volume
under fault
Displays non-compensated volume that has
accumulated since a fault occurred
4.1.3 Data Display Screen and Icons
Data displays in digital format, as shown in Figure 4.
Figure 4: Data display screen
Icons display depending on the function or parameter and how the meter is configured in the Dresser
MeterWare software. For icon descriptions, refer to Table 3.
For information about these data settings, refer to Section 11.
Table 3: Data Display Icons
Icon
Description
CHANGE BATT
Change Battery
psi
Pounds per Square Inch
kPa
Kilopascal
Abs
Absolute
GA
Gauge
°C
Temperature in Celsius
°F
Temperature in Fahrenheit
xm3
Cubic Meters
x100 CF
100 Cubic Feet
x CF
Cubic Feet

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Icon
Description
Alarm/Fault has occurred; refer to Section 11.5
4.2 Flow Indicator
The white, reflective Flow Indicator located on the top of the meter (refer to Figure 5) serves two
purposes: It verifies the impeller rotation to indicate that gas is flowing, and it is also used as an optical
photo-sensor (scanner) when a proving device is testing the meter for accuracy.
Each revolution of the Flow Indicator indicates 0.007407 cf (0.0002098 m3) of non-compensated gas flow
through the meter.

Note: Keep the Flow Indicator covered by the rubber cap to help protect the viewing port
and keep it clean.
Figure 5: Flow Indicator location under cover in meter
5Problems with Installation or Operation
If you encounter any serious problems during installation or initial operation of the meter, immediately
notify your Dresser meter supplier.

Note: Do not attempt repairs or adjustments. Doing so might void all claims for warranty.
When reporting a suspected problem, complete the following steps:
1. Provide the following information to your Customer Service Representative:
•Purchase order number and/or sales order number
•Product model, serial number, and/or bill of material number
•Description of the problem
•Application information such as gas type, pressure, temperature, and flow characteristics
2. Pack all returns in the original shipping container or similar, if available, and use shipping material that
protects the product from damage during transit.
3. Contact your Dresser meter supplier to obtain an RMA (Return Materials Authorization) number.
The Dresser Product Services Department offers professional services for all Dresser Meters and
Instruments products. Authorization for return is required for all products shipped to the Factory for
repair, calibration, warranty, exchange, or credit. An RMA number is required to obtain authorization.