PolyGard SPC-1110 User manual

PolyGardis a registered trademark of MSR SPC1110I01
Phone [phone] & (888) GO INTEC Fax [phone] & (888) FX INTEC Specification subject to change without notice.
INTEC Controls, Inc., P.O. Box 12506, La Jolla, CA 92039 www.inteccontrols.com Printed in USA 040401
PolyGardSPC-1110
Carbon monoxide (CO) gas detection and control system
serial no. SPC-1110-0 00 0
User Manual
April 01, 2004

User Manual - PolyGard®CO SPC-1110
Page 2
PolyGardis a registered trademark of MSR SPC1110I01
Phone [phone] & (888) GO INTEC Fax [phone] & (888) FX INTEC Specification subject to change without notice.
INTEC Controls, Inc., P.O. Box 12506, La Jolla, CA 92039 www.inteccontrols.com Printed in USA 040401
Carbon monoxide (CO) gas detection and control system
1General Overview .................................................................................................................. 3
2Description ............................................................................................................................... 3
3Installation ................................................................................................................................5
3.1 Mounting locations.................................................................................................................. 5
3.2 Enclosure ............................................................................................................................... 5
4Electrical Connection.......................................................................................................... 6
4.1 Instructions............................................................................................................................. 6
4.2 Wiring connection................................................................................................................... 7
5Start-up Operation ................................................................................................................ 8
5.1 Set trip/setpoints..................................................................................................................... 8
5.1.1 Set low and high trip/setpoints without optional digital display ............................................. 8
5.1.2 Control trip/setpoint voltage calculation............................................................................... 9
5.1.3 Set low and high trip/setpoints with optional digital display .................................................. 9
5.2 Select switching differential of the trip/setpoints...................................................................... 9
5.3 Calibration.............................................................................................................................. 9
5.3.1 Control span voltage calculation ....................................................................................... 10
5.4 Calibration of digital display range (optional display)............................................................. 10
5.5 Motherboard jumper selection table...................................................................................... 11
5.6 Displayboard jumper selection table ..................................................................................... 11
6Inspection and Service..................................................................................................... 12
6.1 Inspection............................................................................................................................. 12
6.2 Calibration sensor................................................................................................................. 12
6.3 Replacing sensor element .................................................................................................... 12
7Troubleshooting................................................................................................................... 13
7.1 Diagnostics........................................................................................................................... 13
8Cross-sensitivity Data...................................................................................14
9Specifications........................................................................................................................ 15
10 Wiring Configuration and Enclosure Dimensions............................................ 17
11 Notes and General Information.................................................................................. 22
11.1 Intended product application ............................................................................................. 22
11.2 Installers’ responsibilities................................................................................................... 22
11.3 Maintenance ..................................................................................................................... 22
11.4 Limited warranty ............................................................................................................... 22
11.5 Return instructions ............................................................................................................ 22

User Manual - PolyGard®CO SPC-1110
Page 3
PolyGardis a registered trademark of MSR SPC1110I01
Phone [phone] & (888) GO INTEC Fax [phone] & (888) FX INTEC Specification subject to change without notice.
INTEC Controls, Inc., P.O. Box 12506, La Jolla, CA 92039 www.inteccontrols.com Printed in USA 040401
Carbon monoxide (CO) gas detection and control system
1 General Overview
The PolyGardCO analog single point controller is used for detection of carbon monoxide in the ambient air to
warn of the presence of carbon monoxide gas and to control ventilation systems.
2 Description
Gas sensing
The sensor portion of the PolyGardCO analog single point controller is a micro-fuel cell, which is completely
sealed. The measurement is a gas-in-liquid chemical reaction rather than a surface area measurement. With no
surface area to coat, this sensor retains its sensitivity to carbon monoxide even after prolonged exposure to clean
air.
The cell consists of a diffusion barrier, O-ring seal, electrolyte reservoir and three electrodes: sensing, counter and
reference. The target gas, carbon monoxide, enters the cell through a diffusion barrier. The chemical process of
the measurement is one of oxidation where one molecule of the target gas is exchanged for one molecule of
oxygen. The reaction drives the oxygen molecule to the counter electrode, generating a DC microampere signal
between the sensing and counter electrodes. This signal is linear to the volume concentration of the sensed gas
rather than the partial pressure.
The integrated two-wire transformer converts this DC microampere signal to a standard 4-20 mA signal. In some
cases, biasing is required to maintain a voltage differential between the reference and sensing electrode in order
to facilitate the necessary reaction in the cell.
The transmitter electronics will provide the necessary bias voltage when configured for one of these sensor types.
Most sensors produce a small amount of baseline current in clean air. This is adjusted out with the zero
potentiometer on the transmitter.
This oxidation at the electrodes causes wear of the sensor. Typical life for this sensor is approximately five years in
normal operation. This will vary somewhat from sensor to sensor, with some working lifetimes less than five years
and some greater than 5 years. This wear also changes the characteristics of the sensor, requiring periodic re-
calibration. It is recommended that the sensor accuracy be verified every six months and recalibrated as
necessary.
Relay output
The controller output provides two (2) adjustable trip/setpoints within the sensing range. If the CO concentration
exceeds any trip/setpoint value the respective alarms will be activated. The low or high alarm trip/setpoint level
correspond to the relay outputs 1K1 (R1) and 1K2 (R2). The output relay R3 can be assigned to either low alarm
or high alarm.
The controller has a self-diagnostic to detect any power supply voltage or sensor failures. When a failure occurs it
triggers relay output R4. The fail-safe relay R4 will close in case of loss of supply voltage or sensor failure.
Analog output
The 1-5 VDC output is linear and represents the range of 0-250 ppm actual sensor proportional value. This signal
can be used with any external DDC/PLC control or automation system.
Test button
With this button pushed, it simulates the maximum gas concentration. Low and high alarms will be activated and
the display will show the maximum value.

User Manual - PolyGard®CO SPC-1110
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PolyGardis a registered trademark of MSR SPC1110I01
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INTEC Controls, Inc., P.O. Box 12506, La Jolla, CA 92039 www.inteccontrols.com Printed in USA 040401
Manual override of low alarm relay
Manual switch for “Auto” or “On” function of the relay 1K1 (R1)
Switch position:
Auto = alarm relay 1K1 normal operation
On = alarm relay 1K1 manually on
Caution!
Replacement sensor elements, which are not bias types, are shipped with a tiny spring of wire shorting the sensor
and reference electrodes.
This spring MUST BE REMOVED prior to installing the element into the sensor assembly.
Optional Display
3.5 digits display of concentration
LED power: green Power on, and normal operation
red Failure operation
LED alarm: orange Low alarm level active
red Low and high alarm level active
Button “Reset 2nd Alarm” Reset high alarm, when relay is set to latched
Button “Reset Audible” Reset internal horn and relay R3 for remote alarm
Optional time delay relay for low alarm
Time delay relay for delayed activation of relay 1K1
RTE-P11 analog timer = on-delay, adjustable from 0.1 min to 10 min

User Manual - PolyGard®CO SPC-1110
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PolyGardis a registered trademark of MSR SPC1110I01
Phone [phone] & (888) GO INTEC Fax [phone] & (888) FX INTEC Specification subject to change without notice.
INTEC Controls, Inc., P.O. Box 12506, La Jolla, CA 92039 www.inteccontrols.com Printed in USA 040401
3 Installation
Note:
• Avoid any force (e.g. by thumb) during operation or installation on the sensor element. This could destroy
the element.
• Electronics can be destroyed through static electricity. Therefore, do not work on the equipment without a
wrist strap connected to earth ground or standing on conductive floor.
3.1 Mounting locations
• The specific weight of carbon monoxide is almost the same as that of air (factor 0.967).
• Location of the SPC 1110 must conform to the layout of the area being monitored.
• Disregard the ventilation ratio! Do not mount SPC 1110 in the center of the airflow. In larger rooms, it
might be necessary to install two or more SPC 1110 where there is not adequate air movement. Do not
mount in corners or directly in front of air inlets (e.g. doors, windows, open ramps, dampers, etc.). In
areas with undefined air movement, it might be necessary to distribute several SPC 1110 in a vertical and
horizontal direction over the whole area to be monitored.
• Avoid locations where water, oil etc. may influence proper operation and where mechanical damage
might be possible.
• Mounting height is 5 feet to max. 6 feet (1.5 to 1.8 m) above floor.
• Provide adequate space around SPC 1110 for maintenance and calibration work.
3.2 Enclosure
• The door of the enclosure is lockable with supplied key (5/16 in. (8 mm) triangle key).
• Use the provided template for locating position of wall mounting holes.
• Screw the enclosure vertically on wall. (see Fig. 2, page 18).
• When wiring is completed, put back the wire track cover and close the door of the enclosure. (see Fig. 1,
page 17).

User Manual - PolyGard®CO SPC-1110
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PolyGardis a registered trademark of MSR SPC1110I01
Phone [phone] & (888) GO INTEC Fax [phone] & (888) FX INTEC Specification subject to change without notice.
INTEC Controls, Inc., P.O. Box 12506, La Jolla, CA 92039 www.inteccontrols.com Printed in USA 040401
4 Electrical Connection
4.1 Instructions
Note:
Electrostatic discharge (ESD) may damage electronic components. During wiring, open the cover only when
completely grounded via grounding strap or standing on conductive floor.
• Connections should be made without any power applied to conductors.
• Installation of the electrical wiring should be according to the connection diagram and only performed by a
trained specialist.
• For the 1-5 VDC analog output signal use shielded cable to avoid any influence from external interference.
• Recommended cable: 18 AWG shielded, maximum resistance 20.8 Ω/1000 ft (73 Ω/1000 m)
• Cable for power and relay outputs do not need to be shielded.
Power terminal block X1
Connector H 120 VAC 50/60Hz (24V AC/DC without transformer)
Connector N 0 VAC/DC
Connector G Earth ground
Motherboard terminal strip X2
Connector 1 1-5 VDC sensor output signal (common)*
Connector 2 1-5 VDC sensor output signal (positive)
Connector 3 Power supply 24 VAC
Connector 4 0 VAC/DC
Connector 5 Power supply 24 VDC (19 - 28 VDC)
Connector
* Note:
When the SPC analog output signal is conntected to an external controller, the controller’s analog input must
provide isolation for the 1-5 VDC signal. If the 1-5 VDC signal is used, then remove Jumper JP1 located on the
motherboard.
Motherboard terminal strip X3 (relay output without optional time delay relay 1K1):
Connector 1-2 R1, low alarm relay activates the 1K1 relay via internal wiring
Connector 3
Connector 4
Connector 5
NO
NC
COM R2, high alarm relay activates the 1K2 relay via internal wiring
Connector 6-7 R3, potential free contact for remote alarming
Connector 8-9 R4, potential free contact for remote fail-safe alarming
Low alarm relay socket 1K1 (DPDT)
Contact set 1 of DPDT Contact set 2 of DPDT
Connector 5
Connector 1
Connector 9
Connector 8
Connector 4
Connector 12
NO
NC
COM

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PolyGardis a registered trademark of MSR SPC1110I01
Phone [phone] & (888) GO INTEC Fax [phone] & (888) FX INTEC Specification subject to change without notice.
INTEC Controls, Inc., P.O. Box 12506, La Jolla, CA 92039 www.inteccontrols.com Printed in USA 040401
High alarm relay socket 1K2 (DPDT)
Contact set 1 of DPDT Contact set 2 of DPDT
Connector 5
Connector 1
Connector 9
Connector 8
Connector 4
Connector 12
NO
NC
COM
Optional low alarm time delay relay socket 1K1 (DPDT)
Contact set 1 of DPDT Contact set 2 of DPDT
Connector 6
Connector 5
Connector 8
Connector 3
Connector 4
Connector 1
NO
NC
COM
4.2 Wiring connection
Static electricity (see section 4.1).
• Open the door of the enclosure.
• Pull cables via the conduit openings into the enclosure, and connect cable leads to the appropriate
terminal connectors.

User Manual - PolyGard®CO SPC-1110
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PolyGardis a registered trademark of MSR SPC1110I01
Phone [phone] & (888) GO INTEC Fax [phone] & (888) FX INTEC Specification subject to change without notice.
INTEC Controls, Inc., P.O. Box 12506, La Jolla, CA 92039 www.inteccontrols.com Printed in USA 040401
5 Start-up Operation
Only trained technicians should perform the following:
• Check mounting location.
• Check power voltage.
• Check for correct sensor element (7 MSR) at sensorboard terminal X3 PCB EC-C.
• Check and/or select the appropriate jumpers for remote alarm function, relay R3 (see section 5.5,
motherboard jumper selection table).
• Check and/or select the appropriate jumper for failure function, relay R2 (see section 5.5, motherboard
jumper selection table).
• Check and/or select the appropriate jumper for latched function, relay R2 (see section 5.5, motherboard
jumper selection table).
• Check and/or adjust trip/setpoints for low and high alarm levels (see section 5.1, motherboard
potentiometers R31and R32).
• Check and/or put switch into “Auto” position, manual override of low alarm.
• Verify sensor/transmitter operation by mearsuring approximately 200 mV (about 0 ppm CO) on
sensorboard terminal -X6 and +X6.
Required instruments to start-up and calibrate the SPC:
• Test gas bottle with synthetic air.
• Test gas bottle with 200 ppm CO.
• Gas pressure regulator with flow meter to control the gas flow at 300 ml/min.
• Sensor head calibration adapter with tubing.
• Digital voltmeter with a range of 0-2 VAC and 0-10 VDC, accuracy 1%
• Small screwdriver.
Note:
Please observe proper handling procedures for test gas bottles!
5.1 Set trip/setpoints
5.1.1 Set low and high trip/setpoints without optional digital display
Set low trip/setpoint
• Connect a digital voltmeter to test jacks J1 (red) and JM (black) on the motherboard with a range selected
that will display 10 VDC maximum.
• Adjust the low trip/setpoint voltage, with potentiometer ”R31” at the motherboard, until the signal reads the
appropriate mVDC ± 2 mV (see section 5.1.2, calculation for trip/setpoint control voltage).
Set high trip/setpoint
• Connect a digital voltmeter to test jacks J2 (red) and JM (black) on the motherboard with a range selected
that will display 10 VDC maximum.
• Adjust the high trip/setpoint with potentiometer ”R32” at the motherboard until the signal reads the
appropriate mVDC ± 2 mV (see section 5.1.2, calculation for trip/setpoint control voltage).

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PolyGardis a registered trademark of MSR SPC1110I01
Phone [phone] & (888) GO INTEC Fax [phone] & (888) FX INTEC Specification subject to change without notice.
INTEC Controls, Inc., P.O. Box 12506, La Jolla, CA 92039 www.inteccontrols.com Printed in USA 040401
5.1.2 Control trip/setpoint voltage calculation
= 0.016 V x trip/setpoint (ppm) + 1.20 VDC
(ppm)
Example
Trip/setpoint value 50 ppm
Control voltage 2.0 V
0.016 (V) x 50 (ppm) + 1.20 (V) = 2.0 V
(ppm)
5.1.3 Set low and high trip/setpoints with optional digital display
• Set display jumper on displayboard into position “JP1” to “JP 1.2”. This will provide a display value with +/-
sign.
Set low trip/setpoint
• Set mode-operating switch “S1” on displayboard into position 1 (far left position). The digital display
indicates the low trip/setpoint value.
• Adjust the low trip/setpoint with potentiometer “R31” on the motherboard. The trip/setpoint value can be
read on the digital display.
Set high trip/setpoint
• Set mode-operating switch “S1” on displayboard into position 2 (second position from the left). The digital
display indicates the high trip/setpoint value.
• Adjust the high trip/setpont with potentiometer “R32” on the motherboard. The trip/setpoint value can be
read on the digital display.
• Set mode-operating switch “S1” on displayboard into position 4 (far right position). This is the normal
operating mode (see Fig. 5, page 18).
• Set display jumper on displayboard back into position “JP1” to “JP1.1”. This provides a display value
without any +/- sign.
5.2 Select switching differential of the trip/setpoints
Individual switching differentials can be selected per trip/setpoint via jumpers “JP6” and “JP8” on the
motherboard, either 4% or 10% differential of full transmitter range (see section 5.5, motherboard jumper
selection table). For example, with factory standard range 0-250 ppm CO, 4% differential =10 ppm, and 10%
differential = 25 ppm.
5.3 Calibration
Note:
If calibration is necessary, the sensor element must be powered and be fully stabilized for at least 1 hour.
Zero adjustment (After sensor warm-up)
Zero-point calibration (4mA):
• Connect digital voltmeter to test pins – and + at sensorboard (with a range selected that will display 2 VDC
max.).
• Connect the calibration adapter to sensor element.
• Apply sensor element zero calibration gas, (300 ml/min; 14.5 psi ± 10%), or other clean air source.
• Wait two minutes until the signal is stable; adjust signal with zero potentiometer ”Zero” until the signal is
200 mV ± 2 mV and stable (sensorboard).
• Remove calibration adapter carefully by turning lightly.

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Phone [phone] & (888) GO INTEC Fax [phone] & (888) FX INTEC Specification subject to change without notice.
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Span adjustment
Note:
CO calibration gas is toxic; never inhale the gas!
Symptoms: Dizziness, headache and nausea.
Procedure if exposed: Bring into fresh air at once, consult doctor.
• Connect calibration adapter to the sensor element.
• Apply sensor element span calibration gas (200 ppm CO), (300 ml/min; 14.5 psi ± 10%).
• Wait two minutes until the signal is stable, adjust signal with span potentiometer ”Span” until the signal
reads the appropriate mVDC (± 3 mV, see calculation for control voltage 5.3.1) and is stable
(sensorboard).
• Remove calibration adapter with a careful light turn. Inspect the seating of the sensor element!
5.3.1 Control span voltage calculation
800 (mV) x test gas concentration (ppm) + 200 (mV)
Sensing range CO (ppm)
Example
Sensing range CO concentration 250 ppm
Test gas concentration 200 ppm
Control voltage 840 mV
800 (mV) x 200 (ppm) + 200 (mV) = 840 mV
250 (ppm)
5.4 Calibration of digital display range (optional display)
Note:
The display range is factory set and normally does not require any field adjustment.
Adjustment can only be made when the sensorboard test pins “X6+” and “X6-“ read 200 mV. This represents a
0 ppm CO value.
Calibrate maximum display range of 250 ppm CO
• Connect digital voltmeter to test pins “J3+” and “J4-“ on the displayboard with a range selected that will
display 300 mVDC maximum.
• Adjust the maximum display range voltage with potentiometer “R31” on the displayboard until the signal
reads 120 mVDC ± 1 mVDC.
Calibrate zero point display of 0 ppm CO
• Adjust the zero point with potentiometer “R32” on the displayboard until the digital display reads 0 ppm.