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

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Air Monitor Corporation
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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
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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

CAMM
Air Monitor Corporation
116-044-91.P65 (8/31/10) CAMM - IO&M Manual
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4.4 – PROCESS CONNECTIONS
TheCAMMcomesstandardwith brass 1/8" FPTconnections(orspecialfittingsifordered). Totheseconnectionsthe
customercaninstallfittings required for the type of tube/pipe used to connect to process sensor (i.e. flow station,flow
probe, static pressure sensors).
When connecting the CAMM to an airflow measuring device, connections must be completed as follows:
– High Port on CAMM connects to Total Pressure from airflow measuring device.
– Low Port on CAMM connects to Static Pressure from airflow measuring devices.
Although any size of tube/pipe can be used, the response time of the CAMM to process change can increase if there
is a increase in tube/pipe size or an increase in tube/pipe length.
CAUTION
– Selected fittings should be compatible with the brass 1/8" FPT bulkhead connection, and installed using an
appropriatethreadlubricant/sealant.
– When signal fittings are added or removed, use a 9/16 wrench to prevent the 1/8" FPT bulkhead fitting from
turning.
– It is extremely important that no pressure be present in signal tubing at the time of installation, and the
orientation of high and low pressure signal lines is maintained between the source and the CAMM.
If process being measured contains humidity or moisture, it is recommended a drip leg with drain on each tube/pipe
be installed to preclude the migration of water into the CAMM.. See Figure 4.2. for typical drip leg installation.
Figure 4.2
SECTION 4 – INSTALLATION
CAUTION
Migration of water into
the CAMM will
voidwarranty.

CAMM
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116-044-91.P65 (8/31/10) CAMM - IO&M Manual
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4.5 – POWER/SIGNAL CONNECTIONS
All power and signal wiring is done at the terminal strip at the left side of the CAMM. Figure 4.3 below represents the
terminal strip and the connections for power input and the various inputs/outputs available.
Figure 4.3
CAUTION
When connecting or disconnecting any wiring to the CAMM, the
unit's power switch (see Figure 4.1) must be in the OFF position.
WIRING.
It is recommended that any power wiring be 14 awg to 18 awg, and any signal wiring should be 14 awg to 22 awg. 14
awg is the maximum wire gauge that the terminal strip on the CAMM can accommodate.
No more than two wires should be connected to any one terminal. 18 awg is the maximum gauge wire that can be
doubled up in one terminal on the CAMM.
To facilitate wiring and any future removal of the CAMM, each terminal strip is removable from the unit. Remove
terminal strip marked 1-16 first by pulling sideways, away from the unit. Aflat blade screwdriver can also be used to
gently pry strip free. Once the strip is removed, the second strip marked 17-32 can be similarly removed.
If the unit was furnished with optional conduit connection box, loosen screw, and remove cover to gain access to the
terminal strip.
SECTION 4 – INSTALLATION

CAMM
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116-044-91.P65 (8/31/10) CAMM - IO&M Manual
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4.5 – POWER/SIGNAL CONNECTIONS (con't)
Transmitter Output 1 (Terminals 1 and 3). This output is sourced (powered) by the CAMM.
4-20mADC: Maximum load resistance is 750 ohms.
0-10VDC: Minimum load resistance is 5000 ohms.
0-5VDC: Minimum load resistance is 2500 ohms.
Temperature Output 2 (Terminals 2 and 3). This output is sourced (powered) by the CAMM.
4-20mADC: Maximum load resistance is 750 ohms.
0-10VDC: Minimum load resistance is 5000 ohms.
0-5VDC: Minimum load resistance is 2500 ohms.
Absolute Pressure Output 3 (Terminals 4 and 6). This output is sourced (powered) by the CAMM.
4-20mADC: Maximum load resistance is 750 ohms.
0-10VDC: Minimum load resistance is 5000 ohms.
0-5VDC: Minimum load resistance is 2500 ohms.
Analog Output 4 (Terminals 5 and 6). This output is sourced (powered) by the CAMM.
4-20mADC: Maximum load resistance is 750 ohms.
0-10VDC: Minimum load resistance is 5000 ohms.
0-5VDC: Minimum load resistance is 2500
Temperature Input (Terminals 7, 8, and 10). Follow the appropriate figure below for connecting a temperature
input signal.
Figure 4.4 Figure 4.5
Special Function Input (Terminals 9 and 10). Input is required to be sourced (powered) from the customer.
Input can be 4-20mA, 0-5V, or 0-10V (refer to Section 4.6 for selection).
External Purge Start (Terminals 11 and 13). Customer to provide momentary (0.5 to 10 second unpowered) dry
contact to initiate purge cycle.
Input Power (Terminals 14, 15, and 16). Power required by CAMM must be connected to terminals 15 and 16.
Earth ground should be connected to Terminal 14. When powering multiple units from one power source, polarity
must be maintained.
Purge Interrupt (Terminals 17 and 18). Customer to provide momentary (0.5 to 10 seconds unpowered) dry
contact to interrupt a purge cycle in progress.
AUTO-purge Purge Valves (SV-1A & SV-1B) (Terminals 21, 22 and 23). Customer to connect toAUTO-purge
panel. Contacts close uponAUTO-purge cycle initiation, remain closed through the programmed Purge Duration
and open at the start of theAfter Purge Duration (see Section 5.11).
AUTO-purge Acknowledgment (Terminals 24 and 25). Acknowledgment contact for customer use. Contacts
close uponAUTO-purge cycle initiation, remain closed through the entire purge cycle (see Section 5.11).
AUTO-purge Main Air Valve (SV2) (Terminals 27 and 28). Customer to connect terminals 27 and 28 to AUTO-
purge panel.
SECTION 4 – INSTALLATION
Review Factory Set-Up Information Sheet
for your signal type.
Review Factory Set-Up Information Sheet
for your signal type.
Review Factory Set-Up Information Sheet
for your signal type.
Review Factory Set-Up Information Sheet
for your signal type.

CAMM
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116-044-91.P65 (8/31/10) CAMM - IO&M Manual
SECTION 4 – INSTALLATION
9
4.6 – INPUT/OUTPUT SELECTION
Selectionsofinputandoutputsignal types are made on the Jumper section of the I/O board, see Figure 5.1. Remove
top cover to gain access to the Jumper board. Figure 4.6 depicts the Jumper board and the pins associated with
specific input and output signal types.
Figure 4.6
Table 4.1 lists the identifier for each row of pins to be jumpered for a specific input or output signal type.
Table 4.1
The necessary jumpers have been installed at the Factory for customer specified inputs and outputs (see Factory
Set-Up Information Sheet).
To change the signal type of an input or output, remove all jumpers from the present signal type pins and install them
on the desired signal type pins.
Inputs have a single jumper covering two pins, and outputs have two jumpers covering four pins.
4.7 – DISPLAY CONTRAST ADJUSTMENT
To compensate for different ambient lighting conditions and viewing angles, the CAMM display's contrast can be
adjusted for optimum visibility.
Contrast is adjusted using potentiometer R1 on CPU board (see Figure 5.1). To gain access to R1:
• Remove the two 10-32 screws on front cover and pull the cover straight and to the right.
• Turn R1clockwisetoincrease contrast(darkencharacters relative tobackground)and counterclockwisetodecrease
contrast.
Analog Output (AO-1)
(Transmitter)
Analog Output (AO-2)
(Temperature)
Analog Output (AO-3)
(Absolute Pressure)
Analog Output (AO-4)
(Selectable)
Analog Input (AI-1)
(Temperature)
Analog Input (AI-2)
(Special Function Input)
4-20mADC
J10
J7
J4
J1
J16
J13
0 to 5 Volts
J11
J8
J5
J2
J17
J14
0 to 10 Volts
J12
J9
J6
J3
J18
J15
SIGNAL TYPE

CAMM
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116-044-91.P65 (8/31/10) CAMM - IO&M Manual
5.1 – INTRODUCTION
The CAMM has been configured and calibrated at the Factory to customer specified parameters which are recorded
on the CAMM Factory Setup Information Sheet, included with the unit. Review this information and verify that the
CAMM setup is correct for your applications. If any problems or discrepancies are detected, contact Air Monitor's
Customer Service Department at 1-800-AIRFLOW prior to proceeding.
5.2 – START-UP
1. After Installation has been verified in accordance with Section 4, turn power switch located at the lower left side
to the ON position (see Figure 4.1).
2. Display will briefly indicate:
-- CAMM --
Thanks for Choosing
AIR MONITOR with the progressing from left to right.
Followedby:
-- CAMM --
Performing Auto-Zero
Afterapproximately10 seconds,and thenreturntoNormaldisplay mode,andgreenLEDindicating"CPUActivated"
will flash rapidly (4 times per second). This is Normal operation mode and no further Operator interface is
required. If, however, Operator would like to verify configuration or change Operator selectable parameters,
continue to Section 5.4 entitled "CONFIGURATION".
10
SECTION 5 – OPERATION
5 – OPERATION

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116-044-91.P65 (8/31/10) CAMM - IO&M Manual
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5.3 – NORMAL OPERATION
Under Normal operation the CAMM's display will continuously indicate current process variables.
AUTO-zero
At periodical intervals* (see Factory Set-Up Information Sheet) the AUTO-zero cycle will be initiated. When this
occurs, the display will be frozen and all outputs will remain constant. During this cycle the "AUTO-zero in Progress"
LED will be lit.
This cycle will not occur ifAUTO-zero has been turned OFF in configuration programming (see Section 5.10).
The AUTO-zero cycle can be manually activated by user (if ON in configuration programming) by simultaneously
pressing ESC and UP, then scrolling until PerformAuto-Zero is displayed, then press ENT.
AUTO-purge
Atperiodicintervals*(seeFactorySet-UpInformationSheet) theAUTO-purgecyclewillbeinitiated. Whenactivated,
display will be frozen and all outputs will remain constant. During this cycle, the "AUTO-purge In Progress" LED will
remain lit. Length of cycle depends on purge duration and after-purge duration (see Factory Set-Up Information
Sheet).
This cycle will not occur ifAUTO-purge has been turned OFF in configuration programming (see Section 5.11).
The AUTO-purge cycle can be manually activated by user (if ON in configuration programming) by simultaneously
pressing ESC and UP, then scrolling until PerformAuto-Purge is displayed, then press ENT.
*Note: The interval clock forAUTO-zero andAUTO-purge cycles is initiated when the CAMM's power switch is
turned on. The time intervals (preset in Operator Set-Up menu) will then start their timing sequence.
To reset the interval clock, turn power offforaminimumof10seconds, then turn power back on. Interval
clock will then initiate at time zero.
Changing the interval selection in Operator Setup does not reset time clock.
SECTION 5 – OPERATION

CAMM
Air Monitor Corporation
116-044-91.P65 (8/31/10) CAMM - IO&M Manual
5.4 – CONFIGURATION
The CAMM's Onboard Microprocessor Controls Configuration: Operating parameter selection; input/output activa-
tion and scaling, display scaling, and transducer calibration.
Thecustomercan verify configuration andchangecertainparameters(within defined ranges)byenteringthe CAMM's
Configuration mode. This is accomplished using the four pushbuttons located on the CAMM's top cover.
Thetype(i.e.,4-20mA,0-5V,0-10V)ofavailableoutputscan also be changed by jumper selections on I/O board(see
Section 4.6).
To gain access to the jumpers, removetwo10-32screwsonfrontcover and pull the cover straight up and swingtothe
right.
CAUTION: With cover removed, ESD (electrostatic discharge) precautions should be observed at all times
to protect sensitive components.
Refer to Figure 5.1 for location of pushbuttons: UP, DN, ESC, and ENT and location of jumpers.
Figure 5.1
Figure 5.2
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SECTION 5 – OPERATION

CAMM
Air Monitor Corporation
116-044-91.P65 (8/31/10) CAMM - IO&M Manual
SECTION 5 – OPERATION
5.5 – PUSHBUTTON DEFINITION
In additionto Configuration programming,pushbuttons can beused for certain functionswhen in the Normaloperation
mode. The following list describes the pushbutton function when in the Normal operation mode and in the Operator
Setup (programming).
When in Normal Operation Mode.
ESC + ENT Activates the Operator Setup menu.
ESC + UP Displays a list of ManualActions available on the top line of the display. Use UP or DN to scroll
through selections.
The following list describes all possible actions. Those available depend on installed options.
– Turn On AutoZero Vlv Output not held.
– Perform Auto-Zero Output held.
– Perform Auto-Purge Output held.
UP + DN Displays software Version, W.O. #, S/N, and ID.
When in Operator Setup.
UP or DN Use to scroll to the desired Main Menu item.
Use to scroll to the value or mode within a Parameter.
ENT Enters user into specific selection sub-menu from Main Menu Selection.
Displays current setting of selected Parameter.
Enters the selected value or mode into memory.
ESC Use to exit Main Menu selection to avoid scrolling to "Return to MAIN MENU".
The following pushbutton combinations can be used to more quickly set user selected values (i.e. process minimum
and maximum, K-factor, Scaling Values, Characterization Values, etc.).
UP* + ESC Increase the second column digit.
DN* + ESC Decrease the second column digit.
UP* + DN Increase the third column digit. X X X X X
DN* + UP Decrease the third column digit.
UP* + ESC and DN Increase the fourth column digit.
DN* + ESC and UP Decrease the fourth column digit.
*Must be pressed and held before other button(s) are pressed.
2nd Column
3rd Column
4th Column
NOTE
Pushbuttons are momentary type and should be quickly pressed and released to
initiate desired change, unless otherwise instructed to press and hold.
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CAMM
Air Monitor Corporation
116-044-91.P65 (8/31/10) CAMM - IO&M Manual
14
5.6 – CONFIGURATION PROGRAMMING
Note: User selectable parameters are limited to standard features and those available for options purchased and installed
at the factory. The following will detail all user parameters, which may or may not be available on your unit.
With power ON and initialization complete (see Section 5.2), simultaneously press ESC and ENT, and display will
indicate:
OPERATOR SETUP
Pressing ENT again will enter the user into the Main Menu of configuration programming. The display will indicate:
Operator Password
Selection
Refer to next page for Main Menu Selections.
SECTION 5 – OPERATION

CAMM
Air Monitor Corporation
116-044-91.P65 (8/31/10) CAMM - IO&M Manual
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5.6 – CONFIGURATION PROGRAMMING (con't)
By using UP and DN, the user can scroll through the following selections:
SECTION 5 – OPERATION
MAIN MENU SELECTION
Operator Password Selection
Transmitter Scaling & Configuration
Low Pass Filter Selection
AUTO-zero Configuration
AUTO-purge Configuration
Special Function Configuration
K-Factor Configuration
Display Configuration
Analog Output Configuration
Transducer Span Selection
Transmitter Input Calibration
Transmitter Output Calibration
Power Supply Calibration
Transducer Characterization Selection
Network Configuration
Menu Inactivity Timeout Selection
Exit Operator Setup
DESCRIPTION
Allows for the selection of a numeric password needed to gain further access to
menu items. Also allows for the password to be bypassed.
Allows for the configuration of process variable such as: Square root, process
type, process minimum/maximum/units, duct area, and percent lockdown. Also
offers a Flow/D.P. calculator that allows user to calculate maximum flow or
differential pressure based on entered variables.
Selects amount of filtering applied to transducer output.
Turns AUTO-zero function ON or OFF, and selects interval.
Turns AUTO-purge function ON or OFF, and selects internal/external activation,
interval, purge duration, after purge time.
Turns Special Function ON or OFF, select from the following special functions: %
Deviation; Summed Flow; Averaged Flow; Delta: Internal-External; Delta:
External-Internal; Low Select; High Select; and Setup parameters specific to
Special Function selected.
Turns K-Factor ON or OFF, and allows for the calculation or selection of gain and
bias values.
Allows for the configuration of Display Filter and Parameters.
Allows for the selection of Analog Output 4 parameters.
Allows for displaying the natural span of the installed transducer.
Allows for the zeroing and spanning of transmitter analog Inputs.
Allows for the zeroing and spanning of transmitter analog Outputs.
Allows for adjustment of power supply voltage.
Allows transducer characterization data to be entered when transducer is replaced.
Turns the Network ON or OFF, selection of input source.
Allows for the selection a time after which the unit returns to normal operation if
no activity in the Operator Menu.
Returns display to Normal operation.