Related Manuals for PEMTECH PT900-12
Summary of Contents for PEMTECH PT900-12
- Page 1 Gas Detection Technology Model PT900-12 Twelve (12) Channel Gas Monitor / Controller Revision 2.0 March 2001 Operator’s Manual Pem-Tech, Inc. Houston, Texas U.S.A www.pem-tech.com...
- Page 2 In no event, whether as a result of breach of warranty or alleged negligence, shall PEM-TECH be liable for special or consequential damages, including, but not limited to, loss of profits or revenue, loss of equipment or down time costs. PT900-12 Monitor/Controller Rev 2.0...
- Page 3 For this an additional charge may be applicable. NOTE: 1. For all the repairs under warranty, serial number must be legible on the items being repaired. 2. Shipping point is FOB Houston. PT900-12 Monitor/Controller Rev 2.0...
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Page 4: Table Of Contents
Alarms Alarm Reset Alarm Bypass Programming Alarms Programming Alarm Levels Setting alarms as Latching or Non-Latching Setting alarm contacts as Normally Open or Normally Closed Figure 6. PT950-B Control Monitor circuit diagram Malfunction Condition Parts List PT900-12 Monitor/Controller Rev 2.0... -
Page 5: Specifications
SPECIFICATIONS For PT900-12 Rack Assembly with Power Supply MOUNTING: Wall or Panel Mount ENCLOSURE: NEMA 4X Fiberglass Enclosure with clear window DIMENSIONS: 27”H x 24.5”W x 10”D WEIGHT: 48 Lbs. -40 F to +149 F. OPERATING TEMPERATURE POWER INPUT: 117 VAC or 24-28 VDC... -
Page 6: Specifications For Model Pt9050-B Control Monitor
24 VDC power input. Power is supplied to remote sensor & transmitter through a 2 Amp miniature fuse Power Consumption: < 1.2 Watt normal operation for each control module. Max of 2.4 watt with all relays active. PT900-12 Monitor/Controller Rev 2.0... -
Page 7: Overview
High-High alarms. The alarm relay set points can be programmed via pushbutton switch provided on the front panel. On the main termination board of PT900-12 rack system alarm terminals are provided for each of the control module. A common terminal is also provided for sensor malfunction (or fault). - Page 8 Captive Screw Digital Display Visual Alarm LED indicators Pushbutton switch (Alarm Reset & Adjust) Alarm Bypass Switch Handle Figure 1. PT950-B Control Module PT900-12 Monitor/Controller Rev 2.0...
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Page 9: Installation And Startup
Do not use excessive force to tighten the screw. Also a handle is provided to facilitate for insertion and removal of the module from the rack assembly. PT900-12 FG enclosure must be installed in a safe area. Figure 2 shows the mounting holes for the fiberglass enclosure. ... - Page 10 Figure 3. User termination – PT900-12FG 12 Each PT950 series control modules in Fiberglass enclosure PT900-12 Monitor/Controller Rev 2.0...
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Page 11: Ac Or Dc Power Input
(Low, Hi & Hi-Hi) to common auxiliary alarms. Auxiliary relay will be energized if the corresponding alarm relay is activated on any of the 12 control modules in the rack assembly. Refer to figure 5. PT900-12 Monitor/Controller Rev 2.0... - Page 12 Figure 4. Remote Sensor connection. Alarm wiring to control modules. PT900-12 Monitor/Controller Rev 2.0...
- Page 13 Figure 5. Wiring Auxiliary relay board for common alarm contacts PT900-12 Monitor/Controller Rev 2.0...
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Page 14: Startup
Note: If a control module display remains blank upon power up or the channel number flashing is incorrect then remove the control module and reinsert into card guides in order to properly snap into the card edge connectors on the termination board. PT900-12 Monitor/Controller Rev 2.0... -
Page 15: Normal Operation And Alarms Normal Operation
This will reset alarms on all control modules. Note: If the gas concentration continues to be higher than the programmed alarm set point the alarm will be activated again. PT900-12 Monitor/Controller Rev 2.0... -
Page 16: Alarm Bypass
Latching alarm on the other hand will not self reset if concentration falls below alarm set point. The alarm relays must be manually reset by pressing the RESET switch on the front panel PT900-12 Monitor/Controller Rev 2.0... -
Page 17: Programming Alarm Levels
To set the alarm as latching move the dip-switch up or move the dip switch down for non-latching alarms. The dip-switch positions in the diagram below shows Low and High alarm configured as non-latching and High-High alarm set as latching PT900-12 Monitor/Controller Rev 2.0... -
Page 18: Setting Alarm Contacts As Normally Open Or
To set the contact type set the jumpers as show below. Jump Pin 2 and 3 for Normally closed contacts Jump Pin 1 and 2 for Normally Open contacts PT900-12 Monitor/Controller Rev 2.0... - Page 19 Figure 6. PT950-B Control Module PT900-12 Monitor/Controller Rev 2.0...
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Page 20: Malfunction Condition
24VDC then the fuse is OK. See figure 6 for the location of the fuse on the control module. 3. Refer to the reference manual of the remote sensor for the problems the sensor transmitter may have. PT900-12 Monitor/Controller Rev 2.0... -
Page 21: Parts List
Model PT950-B Control Module for LEL sensor 950-B-OXY Model PT950-B Control Module for oxygen sensor 950-B-SO2 Model PT950-B Control Module for SO2 sensor Call factory for detail list of control modules available for various gas sensors PT900-12 Monitor/Controller Rev 2.0...
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