Air Monitor CAMM User manual

Installation, Operation,
and Maintenance Manual
CAMM
Microprocessor Based
Combustion Airow Management Module
Versions 5.3X
Installation, Operation & Maintenance
Air Monitor Corporation provides complete
technical support between the hours of
7 a.m. and 5 p.m. PST, M-F
Contact our Service Department
Toll Free: 1-800-AIRFLOW
or fax us at 1-707-526-2825
Air Monitor Corporation
116-044-91.P65 (8/31/10)
CAMM - IO&M Manual
Precision Airflow Measurement
An ON
I CON Brand

CAMM
Air Monitor Corporation
116-044-91.P65 (8/31/10) CAMM - IO&M Manual
TABLE OF CONTENTS
INSTRUMENT WARRANTY .................................................................................................................... i
SECTION 1 – GENERAL INFORMATION
1.1 DESCRIPTION ............................................................................................................................... 1
1.2 THEORY OF OPERATION ............................................................................................................. 1
SECTION 2 – PERFORMANCE SPECIFICATIONS
2.1 TRANSMITTER.............................................................................................................................. 2
2.2 INDICATION ................................................................................................................................... 2
2.3 INPUTS/OUTPUTS ........................................................................................................................ 2
2.4 POWER.......................................................................................................................................... 2
SECTION 3 – FEATURES
3.1 OPERATOR SETUP MENU ........................................................................................................... 3
3.2 AIR DENSITY CORRECTION ........................................................................................................ 3
3.3 TRANSMITTER HOLD ................................................................................................................... 3
3.4 AUTOMATIC ZEROING ................................................................................................................. 3
3.5 AUTO-purge MANAGEMENT......................................................................................................... 3
3.6 SPECIAL FUNCTIONS................................................................................................................... 4
3.7 DATADISPLAY ............................................................................................................................... 4
3.8 K-FACTOR ..................................................................................................................................... 4
3.9 FLOW/DIFFERENTIAL PRESSURE CALCULATOR...................................................................... 4
3.10 NETWORK..................................................................................................................................... 4
3.11 MULTIPLE OPERATING POWER SELECTIONS .......................................................................... 4
3.12 ENCLOSURE ................................................................................................................................. 4
SECTION 4 – INSTALLATION
4.1 RECEIVINGAND INSPECTION.....................................................................................................5
4.2 LOCATION ..................................................................................................................................... 5
4.3 MOUNTING.................................................................................................................................... 5
4.4 PROCESS CONNECTIONS........................................................................................................... 6
4.5 POWER/SIGNAL CONNECTIONS ............................................................................................. 7-8
4.6 INPUT/OUTPUT SELECTION........................................................................................................ 9
4.7 DISPLAY CONTRAST ADJUSTMENT ........................................................................................... 9
TABLE OF CONTENTS

CAMM
TABLE OF CONTENTS
SECTION 5 – OPERATION
5.1 INTRODUCTION.......................................................................................................................... 10
5.2 START-UP .................................................................................................................................... 10
5.3 NORMAL OPERATION ................................................................................................................ 11
5.4 CONFIGURATION........................................................................................................................ 12
5.5 PUSHBUTTON DEFINITION........................................................................................................13
5.6 CONFIGURATION PROGRAMMING ...................................................................................... 14-16
5.7 OPERATOR PASSWORD SELECTION....................................................................................... 17
5.8 TRANSMITTER SCALING & CONFIGURATION .................................................................... 18-29
5.9 LOW PASS FILTER SELECTION................................................................................................. 30
5.10 AUTO-zero CONFIGURATION.....................................................................................................31
5.11 AUTO-purge CONFIGURATION................................................................................................... 32
5.12 SPECIAL FUNCTION CONFIGURATION ............................................................................... 33-34
5.13 K-FACTOR CONFIGURATION................................................................................................ 35-36
5.14 ENHANCED DISPLAY CONFIGURATION .............................................................................. 37-40
5.15 ANALOG OUTPUT CONFIGURATION ........................................................................................ 41
5.16 TRANSDUCER SPAN SELECTION ............................................................................................. 42
5.17 TRANSMITTER INPUT CALIBRATION........................................................................................ 43
5.18 TRANSMITTER OUTPUT CALIBRATION.................................................................................... 43
5.19 POWER SUPPLY CALIBRATION................................................................................................. 44
5.20 TRANSDUCER CHARACTERIZATION SELECTION .................................................................. 45
5.21 NETWORK CONFIGURATION .................................................................................................... 46
5.22 MENU INACTIVITY TIMEOUT SELECTION ................................................................................ 47
SECTION 6 – CALIBRATION
6.1 REQUIRED EQUIPMENT ............................................................................................................ 48
6.2 PREPARATION ............................................................................................................................ 48
6.3 TRANSMITTER INPUT CALIBRATION................................................................................... 49-54
6.4 TRANSMITTER OUTPUT CALIBRATION............................................................................... 55-56
SECTION 7 – MAINTENANCE ............................................................................................................. 57
SECTION 8 – TROUBLESHOOTING .............................................................................................. 58-59
SECTION 9 – PARTS LIST .............................................................................................................. 60-61
SECTION 10 – CUSTOMER SERVICE................................................................................................. 62
TABLE OF CONTENTS
Air Monitor Corporation
116-044-91.P65 (8/31/10) CAMM - IO&M Manual

CAMM
Air Monitor Corporation
116-044-91.P65 (8/31/10) CAMM - IO&M Manual
i
INSTRUMENT WARRANTY
INSTRUMENT WARRANTY
AirMonitorCorporation(hereinafterreferredtoas“Seller”)
warrants that at the time of shipment, products sold
pursuant to this contract will be free from defects in
materials and workmanship, and will conform to the
specifications furnished or approved in writing by Seller.
Nowarrantyisgiventhat delivered productswillconform
to catalog sheets, data sheets, and the like, which are
subject to change without notice.
Seller will repair or replace, at its option, the CAMM
module under this warranty which is returned freight
prepaid to Seller within three (3) years after start-up or
thirty-nine(39)monthsaftershipment that upon test and
examination, proves defective within the terms of this
warranty. The warranty period for the CAMM module
repaired or replaced shall be for the time remaining on
the warranty period of the original components.
PurchasershallnotifySellerinwritingofsuchdefectwithin
sixty (60) days of discovery of the defect.
This warranty does not extend to any product sold by
Seller which has been the subject of misuse, neglect,
accident, damage or malfunction caused by
interconnectionwithequipmentmanufactured by others,
improper installation or storage, or used in violation of
instructionsfurnishedbySeller,nordoes it extend to any
product which has been repaired or altered by persons
notexpresslyapprovedby Seller. NordoesSellerwarrant
equipment against normal deterioration due to
environment; noritems such aslamps,glass, andsimilar
items subject to wear or burnout through usage.
Adjustments for items or equipment not manufactured
by Seller shall be made to the extent of any warranty of
the manufacturer or supplier thereof.
Seller shall not be liable for any special or consequential
damages or for loss of damage, directly or indirectly
arising from the use of the products. Seller's warranty
shall be limited to replacement of defective equipment
and shall not include field removal and installation
expenses.
The warranty set forth above is in lieu of all other
warranties either express or implied and constitutes the
full extent of Air Monitor Corporation’s liability to the
customer, or any other party for breach of warranty.
THEREARENOEXPRESSWARRANTIESEXCEPTAS
SET FORTH HEREIN AND THERE ARE NO IMPLIED
WARRANTIES OF MERCHANTABILITY OF FITNESS
FOR ANY PARTICULAR PURPOSE, WHICH ARE
PARTICULARLYDISCLAIMED.
NOTICE OF PROPRIETARY RIGHTS
Thisdocumentcontainsconfidential technicaldata,including trade
secrets and proprietary information which are the sole property of
Air Monitor Corporation. The use of said data is solely limited to
use as specified herein. Any other use is strictly prohibited without
the prior written consent ofAir Monitor Corporation.

CAMM
Air Monitor Corporation
116-044-91.P65 (8/31/10) CAMM - IO&M Manual
1 – GENERAL INFORMATION
1.1 – DESCRIPTION
The CAMM is an ultra-low differential pressure "smart" mass flow transmitter designed to convert the low magnitude
pressure signals generated by airflow stations or probes, plus process temperature and static pressure inputs into
multiple output signals (4-20mA, 0-5VDC or 0-10VDC) linear to mass flow, temperature, and pressure. Each CAMM
is equipped with numerous standard features: Amulti-line LCD used during configuration/calibration and for display
of process variables;AUTO-zero for elimination of transmitter zero error;AUTO-purge management; analog outputs
of flow (pressure), temperature, absolute pressure, and special function; Operator selectable primary signal noise
filter, input power isolation; and capability of 10:1 flow or 100:1 pressure turndown.
1.2 – THEORY OF OPERATION
High and low pressure signals generated by a combustion airflow station or probes act upon opposite sides of a
flexiblediaphragmwithinthetransducer. The differentialbetween the two pressure signals displaces thediaphragm;
the magnitude of the displacement being measured creates an electrical DC output from the transducer. Additional
analog signals of process temperature (via external 4-20mA temperature input) and process static pressure (via
internal absolute pressure transmitter) are made available. After being multiplexed and undergoingA/D conversion,
theresulting digitalsignals representingprocessvelocitypressure,temperature andstaticpressurecanbemanipulated
within the microprocessor: square rooted; density compensated for air temperature and air pressure correction;
scaled for units of measure and area for process outputs; filtered and scaled for local data display and utilized in
performingaSpecialFunction(seeSection 3 – Features). The built-in microprocessorrunstheprogramthat provides
the following basic functions: Timing, logic, mathematical operations, analog input signal multiplexing, analog input/
output calibration, digital input (contact closure) detection, output relay operation, automatic zeroing valve operation,
Operator Setup menu system, and display (LCD) indication.
1
SECTION 1 – GENERAL INFORMATION

CAMM
Air Monitor Corporation
116-044-91.P65 (8/31/10) CAMM - IO&M Manual
2
2.3 – INPUTS/OUTPUTS
Analog Inputs. Dual inputs are field configurable via
jumper for 0-5VDC, 0-10VDC, or 4-20mADC. One is
reserved for temperature input; the other for use with
special function.
Analog Outputs. Three standard and one selectable
outputs are individually configurable via jumper for 0-
5VDC, 0-10VDC or 4-20mADC.
Digital Inputs. Dry contacts forAUTO-purge external
start command and purge interrupt.
Digital Outputs. Dry contacts for optional alarm or AUTO-
purge activation and acknowledgment. Contacts rated for:
Maximum 3 amps @ 24 to 120VAC
Maximum 3 amps @ 24VDC
Maximum 0.5 amps @ 48VDC
Temperature Compensation Selection . Push-button
selectionoflinearized or non-linearinput. Choiceofthermo-
couple or 100 ohm platinum RTD temperature sensor type.
Type E -50 to 1750ºF -50 to 950ºC
Type T -50 to 750ºF -50 to 400ºC
Type J -50 to 2000ºF -50 to 1090ºC
Type K -50 to 2000ºF -50 to 1090ºC
RTD -50 to 1500ºF -50 to 815ºC
Pressure Compensation. Absolute pressure
(atmospheric or duct static), up to 60 IN Hg.
Network Communication. Optional ModBus TCP/IP
over Ethernet.
2.4 – POWER
Power Supply. 24VDC or 24VAC. Optional 120VAC via
external UL listed transformer.
Power Consumption.
Circuit Protection. Power input is isolated, fused, and
reverse polarity protected.
2.1 – TRANSMITTER
Ranges.Natural Spans .
0 to 25.00 IN w.c.
0 to 10.00 IN w.c.
0 to 5.00 IN w.c.
0 to 2.00 IN w.c.
0 to 1.00 IN w.c.
Span Rangeability. The calibrated span can be down
ranged to 40% of the Natural Span.
Accuracy. ±0.1% of Natural Span, including non-
linearity, hysteresis, deadband, and non-repeatability.
Stability. ±0.5% of Natural Span for six months.
Transducer Response Time. 0.5 second to reach
98% of a step change.
Temperature Effect.
Zero. None; corrected by AUTO-zero.
Span. 0.015% of Full Span/ºF.
Mounting Position Effect. None; corrected by AUTO-
zero.
Span and Zero Adjustment. Digital, via internally
locatedpush-buttons.
Automatic Zeroing.
Accuracy. Within 0.1% of calibrated span.
Frequency.Every 1 to 24 hours selectable on 1 hour
intervals.
Low Pass Filtration. Response time to reach 98% of
a step change is adjustable from 2.0 to 256.0 seconds.
Overpressure and Static Pressure Limit. 25 psig.
Temperature Limits.
–20 to 180ºF Storage.
+40 to 140ºF Operating.
Humidity Limits. 0-95% RH, non-condensing.
2.2 – INDICATION
Displays. Graphical backlit LCD provides up to five
lines of data display.
SECTION 2 – PERFORMANCE SPECIFICATIONS
2 – PERFORMANCE SPECIFICATIONS
0 to 0.50 IN w.c.
0 to 0.25 IN w.c.
0 to 0.10 IN w.c.
0 to 0.05 IN w.c.
24VAC
24VDC
120VAC
14.4VA
9.6W
19.2VA
14VA
9.0W
18.67VA
85VA
37W
106VA
73VA
37W
92VA
Standard w/AUTO-purge
In Rush Contin In Rush Contin

CAMM
Air Monitor Corporation
116-044-91.P65 (8/31/10) CAMM - IO&M Manual
3 – FEATURES
3.1 – OPERATOR SETUP MENU
The CAMM microprocessor program contains a Operator Setup menu system for setting Operator selectable
parameters. Four pushbuttons, ESC, UP, DN, ENT allow the Operator access to the menu for setting configuration
modes and values. Refer to the Configuration Programming (Section 5.6) instructions for operation details. Also
contained in the Operator Setup menu is all input and output calibration. The calibration method is completely digital
and contains no analog potentiometer adjustments which are susceptible to drift. Non-volatile memory is used for
storingallsetupparametersand calibration values, and will remain unchanged after set, even when power to the unit
is off.
3.2 – AIR DENSITY CORRECTION
TheCAMM is capable of performing both process temperature and process staticpressure correction. Temperature
input is an analog signal from a remote temperature transmitter; non-linear temperature inputs can be linearized by
the microprocessor. Process static pressure is measured by means of an internal absolute pressure transmitter
connected to the transmitter static pressure signal input.
3.3 – TRANSMITTER HOLD
Certain operations performed by the microprocessor place the unit into a Hold mode.This occurs when the Operator
Setup menu system is activated, when an AUTO-zero is performed, or when an AUTO-purge cycle is in progress.
WheninHold, all Normal mode processing is halted and outputsand displays are held at their last value prior to Hold.
3.4 – AUTOMATIC ZEROING
At periodic intervals the microprocessor will automatically execute an AUTO-zero cycle consisting of the following
sequence: The transmitter output and display signals are put on Hold; a valve is activated which disconnects the
process high pressure from the high port of the transducer and connects the process static pressure to both sides of
the transducer, creating a true zero differential pressure; after a brief stabilization period, the transducer zero offset
signalis measuredand storedinmemory;thevalve isdeactivated andafterabrief periodfor processsignalstabilization,
the Hold is released and Normal process measurement resumes. During Normal operation, the zero offset value
stored in memory is subtracted from subsequent transducer readings until the next AUTO-zero cycle occurs and
repeats the process.AUTO-zero On/Off and Interval are available and configurable using the Operator Setup menu.
3.5 – AUTO-purge MANAGEMENT
The CAMM provides the capabilities of establishing purge frequency and duration, while also giving the Operator a
choice of either internally timed cycle frequency or externally triggered purge initiation. During the purge cycle all
transmitter outputs and displays are maintained at their last value prior to the start of the purge cycle.
3
SECTION 3 – FEATURES

CAMM
Air Monitor Corporation
116-044-91.P65 (8/31/10) CAMM - IO&M Manual
3.6 – SPECIAL FUNCTIONS
When used in conjunction with an external input (second transmitter) applied to the special function input terminals,
theCAMMcanperformoneoftheSpecial Functions listed below. Within the Operator Setup menu, both the external
inputandtheinternaltransmittersignalscanbeindividually scaled to achieve a correct weighted basis. The resulting
Special Function output is available as an analog output and/or for the display on the Enhanced Display. When %
Deviation is selected as Special Function Type, contact closure is available for alarm/notification. Special Function
ON/OFF and Type are available and configurable using the Operator Setup menu.
%Deviation. | EXTERNAL– INTERNAL | / | EXTERNAL|. This function hasAlarm Setpoint, Deadband, and Delay
that are configurable via the Operator Setup menu.
Summed Flow. INTERNAL + EXTERNAL
Averaged Flow. (EXTERNAL + INTERNAL) / 2
Delta Flow, Internal - External. INTERNAL – EXTERNAL
Delta Flow, External - Internal. EXTERNAL – INTERNAL
Low Select. Selecting the lesser of the INTERNAL and EXTERNAL signals.
High Select. Selecting the greater of the INTERNAL and EXTERNAL signals.
3.7 – DATA DISPLAY
TheintegraldisplayisgraphicalbacklitLCD. Itiscapableof displaying the transmitter flow,processtemperatureand
static pressure signals in Engineering units, plus the Special Function option described in Section 3.6. It can also
display a Operator settable I.D. number using any combination of standardASCII characters. It is also used by the
Operator Setup menu for displaying the menu parameters and values. Configuring the display for Normal operation
is done using the Operator Setup menu. 3.8 – K-FACTOR
The CAMM is equipped with a K-factor feature which allows for the introduction of a bias and/or gain factor into the
transmitter's flow calculations. The K-factor feature is intended to be used in two types of applications:
1. To adjust for flow measurement error as a result of highly distorted airflow induced by upstream or downstream
flow disturbances.
2. To adjust the transmitter's output to bring it into close correlation with field measured flow data.
The K-Factor gain and bias values can be entered directly or the CAMM can calculate these values based on
measured and reference values from a 1 or 3 point airflow traverse.
3.9 – FLOW/DIFFERENTIAL PRESSURE CALCULATOR
TheCAMMis equipped with an integral calculator feature that allows the Operator todetermine the maximum flow or
differential pressure from the appropriate variables. This feature allows the Operator to determine input or output
values at various points of the process or new values if the process parameters have changed. Also, the calculator
can be used to implement a single-point density compensation for operating temperature and/or absolute pressure.
3.10 – NETWORK (option)
The CAMM can be provided with optional ModBus TCP/IP over Ethernet for serial data communication.
3.11 – MULTIPLE OPERATING POWER SELECTIONS
The CAMM can be powered by 24VAC, 24VDC, or 120VAC with optional transformer.
3.12 – ENCLOSURE
The CAMM is furnished in a NEMA 1 aluminum enclosure with external, unitary plug in terminal strips for ease of
installation and removal. An optional conduct connection box is available for applications requiring enclosed field
wiring.
4
SECTION 3 – FEATURES

CAMM
Air Monitor Corporation
116-044-91.P65 (8/31/10) CAMM - IO&M Manual
5
4.1 – RECEIVING AND INSPECTION
• Carefully remove the CAMM from the shipping container taking ESD (electrostatic discharge) precautions.
• Inspect unit for any damage. If damaged, contact freight company.
• Review the Factory Setup Information Sheet provided with unit and verify the W.O. # and Serial # match those on
the unit. Verify that the configuration recorded on the Factory Set-Up Information Sheet is correct for your applica-
tion. If not, contactAir Monitor's Customer Service Department at 1-800-AIRFLOW for further guidance.
Note: The CAMM has been configured and calibrated to customer specified parameters (see "Factory Setup
Information Sheet"), and requires no additional calibration/verification prior to installation.
4.2 – LOCATION
• TheCAMM is housed in a NEMA1 enclosure which provides some degree of protection which is sufficientformost
clean indoor locations.
• Where additional protection is deemed necessary, the CAMM should be mounted in an enclosure with adequate
NEMArating.
• Theambient temperature of the selected mounting location must bebetween40º–140ºF. Consideration should be
given to units installed in enclosures exposed to direct sunlight.
• The selected mounting location should be rigid and free of vibration.
4.3 – MOUNTING
Tools Required: Electric Drill; #25 (0.1495") or #26 (0.1470") Drill Bit; Screwdriver or Nutdriver; Four #8 - 32 Self-
Tapping Machine Screws
• The CAMM can be mounted in any position provided it is secured using all four mounting slots.
• Reasonable consideration should be given to clearances for pressure and electrical connections.
• Once a suitable location is found, mark the centers of the four mounting slots and drill four pilot holes. With the
unit in position, install the four #8 - 32 screws.
Figure 4.1
4 – INSTALLATION
SECTION 4 – INSTALLATION
IR ONITOR ORPORATION A M C
CAMM