Detcon DM-634 User Manual

detcon inc.Detcon MicroSafe™DM-634 Oxygen Deficiency Sensor (0-25% O2)Operator’s Installation & Instruction ManualJune 18,2009 • Document #2016T •

If a jumper tab is installed in the latch position, that alarm relay will be in the latching mode. The latching modewill latch the alarm after alarm c

g) Replace the plug-in control circuit and replace the junction box cover.3.5.6 Remote Mounting ApplicationsSome sensor mounting applications require

3.6 START UPUpon completion of all mechanical mounting and termination of all field wiring, apply system power and observethe following normal condit

Programming Magnet Operating InstructionsOperator interface to MicroSafe™ gas detection products is via magnetic switches located behind the transmitt

d) From the programming menu scroll to the calibration level listing. The menu item appears as: “SET CALLEVEL”. Enter the menu by holding the programm

3.7.4 Calibration FrequencyIn most applications, monthly to quarterly calibration intervals will assure reliable detection. However, industrialenviro

“SET ALARM 1 LEVEL”. Enter the menu by holding the programming magnet stationary over “PGM 1”for 3 seconds until the display reads “SET ALM1 @ 19.5%”

no parity, with the sensor set up as a slave device. A master controller up to 4000 feet away can theoretically pollup to 256 different sensors. This

Bit 3 1-Unit is in calibration 0-Normal operationBit 2 1-Alarm 2 is ascending 0-Alarm 2 is descendingBit 1 1-Alarm 2 is normally energized 0-Alarm 2 i

3.12 DISPLAY CONTRAST ADJUSTDetcon MicroSafe™ sensors feature a 16 character backlit liquid crystal display. Like most LCD, character contrastcan be

Table of Contents3.0 Description3.1 Principle of Operation3.2 Application3.3 Specifications3.4 Operating Software3.5 Installation3.6 Start-up3.7 Calib

3.15 SERVICE POLICYDetcon, Inc., as manufacturer, warrants under intended normal use each new MicroSafe™ plug-in control circuit tobe free from defec

3.16 SOFTWARE FLOW CHARTDetcon Model DM-634 Oxygen Sensor PG.21NORMALOPERATIONCALIBRATIONPGM2 (3)PGM1 (M) PGM2 (M)PGM1 (3)SET ALM1 @ ##.#%INCDECP

3.0 DESCRIPTIONDetcon MicroSafe™ Model DM-634, oxygen deficiency sensors are non-intrusive “Smart” sensors designed todetect and monitor O2 in air ov

3.0.2 Microprocessor Control CircuitThe control circuit is microprocessor based and is packaged as a plug-in field replaceable module, facilitating e

3.1 PRINCIPLE OF OPERATIONMethod of detection is by a controlled rate of diffusion. Air and gas diffuse through a sintered stainless steel filterand

Power ConsumptionNormal operation = 28 mA (<3/4 watt); Full alarm = 85 mA (2 watts)Output3 relays (alarm 1, alarm 2, and fault) contact rated 5 amp

* The estimated remaining sensor life. The menu item appears as: “SENSOR LIFE 100%”3.4.3.2 Alarm 1 Level AdjustmentThe alarm 1 level is adjustable fr

Ventilation- Normal ventilation or prevailing wind conditions can dictate efficient location of gas sensors in amanner where the migration of gas clou

energized/normally de-energized relay. The default settings of the alarms (jumpers removed) are normally de-energized relays, non-latching relays, and