MODEL: CO-500/1000-24
ASSEMBLY CONSISTS OF:
O housing (supersedes PE-EX-CO )
XP-C
ST1600-50
0/1000-24 sensor (supersedes PE1600-500/1000-24 )
JB-T-
A junction box
ELECTROCHEMICAL CO DETECTOR
(Used with ST1600 CO Sensor)
REVISED: October, 2005
WARRANTY POLICY
Net Safety Monitoring Inc Products, are carefully designed and manufactured from high quality
components and can be expected to provide many years of trouble free service. Each product is
thoroughly tested, inspected and burned-in prior to shipment. Failures can occur which are
beyond the control of the manufacturer. Failures can be minimized by adhering to the operating
and maintenance instructions herein. Where the absolute greatest of reliability is required,
redundancy should be designed into the system.
Net Safety Monitoring Inc, warrants its sensors and detectors against defective parts and
workmanship for a period of 24 months from date of purchase and other electronic assemblies
for 36 months from date of purchase.
No other warranties or liability, expressed or implied, will be honored by Net Safety
Monitoring Inc.
Contact Net Safety Monitoring Inc. or the authorized distributor for details.
Table of Contents
DESCRIPTION................................................................1
FEATURES .................................................................. 1
Figure 1 - CO Detector Assembly .......................................... 1
SPECIFICATIONS ............................................................. 2
SENSOR OPERATION .........................................................2
SENSING ELEMENT .................................................... 2
SENSOR OUTPUT...................................................... 3
INSTALLATION ............................................................... 3
DETECTOR POSITIONING ...............................................3
WIRING REQUIREMENTS ............................................... 3
Table 1 -Cross Sensitivity of Electrochemical Sensor to 100% Concentrations of CO . 3
SENSOR WIRING ...................................................... 4
Figure 2 - Sensor Wiring ..................................................5
START-UP PROCEDURE ....................................................... 6
CALIBRATION ................................................................ 6
MAINTENANCE...............................................................6
SENSING ELEMENT REPLACEMENT ...................................... 7
TROUBLESHOOTING..........................................................8
Table 2 - Troubleshooting Guide ...........................................8
Appendix A
Net Safety Monitoring Inc. Electrostatic Sensitive Device Handling Procedure .............. i
Appendix B
Wire Resistance In Ohms ....................................................... ii
DESCRIPTION
The Net Safety Monitoring Inc. CO-500/1000-24 Electrochemical CO Detector consists of an
explosion-proof enclosure, which contains sensor electronic circuitry and an electrochemical CO
sensing element. This CO sensor provides continuous monitoring of oxygen levels in the range
of 0 to 500/1000 ppm. The sensor can be used with one of the Net Safety Monitoring Inc. Uni-
Trol™ Controllers or Display Modules, or it can be used with other devices that are capable of
monitoring a 4 to 20 mA dc input and allow for calibration. The explosion-proof sensor is CSA
certified for hazardous locations, Class 1, Division 1, Groups C and D.
FEATURES
‚ Electrochemical sensor for increased accuracy and reliability.
‚ High specificity to CO reduces the chance of false alarms resulting from the presence of
other gasses.
‚ Temperature compensation to ensure consistent performance over the entire operating
temperature range.
‚ Self-contained transmitter circuitry permits use without a separate transmitter.
‚ Explosion-proof housing.
‚ EMI/RFI hardening.
Figure 1 - CO Detector Assembly
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