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Model DM-100

DM-100 Instruction Manual

Rev. 3.5

Page 4 of 41

1.3

Model 100 Standard Terminal Board (Optional)

If the sensor is ordered with an explosion proof condulet/junction box, the sensor will come with the Model
100 Standard Terminal Board mounted in the J-Box (Figure 7). This terminal board affords the user easy plug-
in connectors for use in wiring the unit during installation, and convenient test points for measuring the
milliamp (mA) output.

R

ED

G

RE

E

N

B

L

UE

WH

ITE

V+

mA

Customer

Wiring

Sensor Wiring

Figure 7 DM Standard Terminal Board

The standard terminal board provides an easy Digital Volt Meter (DVM) connection for reading the mA output
from the sensor.

Two test points (TP1 and TP2) provide a connection across a 10Ω resistor that develops a

10mV voltage drop per 1mA output. Thus a reading of 40mV on a DVM equals 4mA of current. This is an
alternative method to reading the mA output of the sensor for assemblies that do not include the DM-100
Series Display option. Refer to Section 2.6, Field Wiring for more information about the setup of the DM-100
Terminal Board.

1.4

DM-100 Display Terminal Board (Optional)

If the unit is ordered with the optional display or a battery pack (wireless configurations) the unit comes with
the DM-100 Display Terminal Board mounted in the J-Box (Figure 8).

J6

J7

J4

J1

J5

J8

L9

J2

AI

N1

W

/BK

W

/BN

W

/BU

W

/G

N

W/

V

WIRELESS

AI

N2

MA

G

ND

PWR

POWER IN

( SOLAR)

WIRELESS

PROGRAM

B

A

G

ND

24V

MODBUS OUT

( WIRELESS)

24V

G

ND

A

B

MODBUS IN

24V

G

ND

A

B

SENSOR

PWR

G

ND

SCL

SDA

SP1

SP2

DISPLAY

JP1

SW2

SW1

TERM

PROGRAM

POWER

mA

R

ED

B

LA

C

K

B

LU

E

W

H

ITE

Customer Wiring

Figure 8 Model 100 Display Terminal Board

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Содержание DM-100 O2

Страница 1: ...TCON INC RANGE 100 PPM DM 100 GAS H2S Operator s Installation and Instruction Manual Covers all Model DM 100 Sensors DETCON Inc 4055 Technology Forest Blvd The Woodlands Texas 77381 Ph 281 367 4100 Fa...

Страница 2: ...Model DM 100 Model DM 100 ii This page left intentionally blank...

Страница 3: ...Sensors 11 2 7 2 O2 Deficiency Sensors 13 3 Operation 14 3 1 Normal Operation 14 3 2 Auto Span Level Adjustment 14 3 3 Calibration 15 3 3 1 Zero Calibration 15 3 3 2 Span Calibration 17 3 4 Fault Diag...

Страница 4: ...proval Label 6 Figure 11 Typical DM 100 Sensor Assembly and Mounting Dimensions 9 Figure 12 Typical Installation 10 Figure 13 Magnetic Programming Tool 14 Figure 14 Magnetic Programming Switches 14 Fi...

Страница 5: ...ox with a Model 100 Terminal Board and may include a Model 100 Loop Powered LED display Other options are available contact Detcon for more information DETCON INC H2S 100 PPM DM 100 Model 100 Figure 1...

Страница 6: ...dular Mechanical Design The Model DM 100 Sensor Assembly is completely modular and is made up of four parts Figure 4 1 DM 100 Intelligent Transmitter Module ITM 2 Intelligent Plug in Sensor varies by...

Страница 7: ...ith the Transmitter Module Electrical classifications are Class I Division 1 Groups A B C and D Figure 5 Functional Block Diagram Field Replaceable Sensor The Detcon family of electrochemical gas sens...

Страница 8: ...across a 10 resistor that develops a 10mV voltage drop per 1mA output Thus a reading of 40mV on a DVM equals 4mA of current This is an alternative method to reading the mA output of the sensor for ass...

Страница 9: ...ble at J7 NOTE Install JP1 jumper on pins 1 and 2 if a battery pack is used Install JP1 on pins 2 and 3 if battery is not used 1 5 DM 100 Series Display Optional The DM 100 Series Display is a 4 digit...

Страница 10: ...the junction box If a good ground connection is not made the sensor can be grounded to the junction box using the sensor s external ground lug Verify a good ground connection between the junction box...

Страница 11: ...k sources within an industrial process include flanges valves and tubing connections of the sealed type where seals may either fail or wear Other leak sources are best determined by facility engineers...

Страница 12: ...rference gases in an area does not preclude the use of this sensor technology The sensor could experience a false high or false low reading should exposure occur Cross Interference Data Table The gase...

Страница 13: ...1 Groups A B C D area classifications and are ATEX Approved for Class I Zone 1 Group IIC area classifications Proper electrical installation of the gas sensor is critical for conformance to Electrical...

Страница 14: ...0 Figure 12 Typical Installation NOTE Any unused ports should be blocked with suitable 3 4 male NPT plugs Detcon supplies one 3 4 NPT male plug with each J box enclosure If connections are other than...

Страница 15: ...Blue B Green is not connected 6 On the Display Terminal Board other connectors are provided for factory installed options The options ordered will dictate if and what connectors are used The display o...

Страница 16: ...ibration Adapter OR Detcon PN 943 01747 T05 Teflon Calibration Adapter for highly reactive gases Detcon Span Gas 50 of range target gas in balance N2 or Air at fixed flow rate between 200 500cc min 50...

Страница 17: ...irements Detcon PN 613 120000 700 700 Series Splash Guard with integral Cal Port and Calibration Wind Guard P N 943 000000 000 OR Detcon PN 943 000006 132 Threaded Calibration Adapter OR Detcon PN 943...

Страница 18: ...ch location The location of PGM1 and PGM2 are shown in Figure 14 DETCON INC H2S 100 PPM DM 100 Program 1 Program 2 Figure 14 Magnetic Programming Switches 3 1 Normal Operation In normal operation the...

Страница 19: ...3 3 1 Zero Calibration The zero calibration is used to zero the sensor Zero calibration should be performed periodically or as required Zero calibration should be considered after periods of over rang...

Страница 20: ...r The reading will then return to 4ma The ideal reading for zero is 4 03mA or 40 3mV 4 Observe the reading for a minute or so to ensure that the reading does not drift 5 If zero gas was used remove th...

Страница 21: ...e of 200 to 500cc min with 500cc min being the recommended flow rate Other concentrations can be used if they fall within allowable levels of 10 to 100 of range NOTE 3 The Calibration Wind Guard must...

Страница 22: ...get reading This indicates that the span calibration point has been successfully saved If a lack of proper signal level change is internally detected the sensor will immediately go into fault The read...

Страница 23: ...e fault until a successful AutoSpan is completed NOTE For O2 deficiency sensors N2 99 99 MUST be applied at a flow rate of 500cc min for 2 to 3 minutes until the sensor reading clears below 2 5 volume...

Страница 24: ...explosion proof Junction Box The prevention packet will prevent the internal volume of the J Box from condensing and accumulating moisture due to day night humidity changes This packet provides a crit...

Страница 25: ...Feed the sensor assembly wires through the 3 4 female NPT mounting hole and thread the assembly into the J box until tight and the ITM faces toward the front access point Use the locking nut to secur...

Страница 26: ...22 of 41 9 Reconnect the power connector to the terminal board 10 Re install the DM 100 Display if one was installed 11 Reinstall the junction box cover and restore power to the sensor 12 Check operat...

Страница 27: ...mplete Verify the cal gas is being removed at the appropriate time during span calibration Background gas may be present Use bottled air zero air or N2 if there is a known continuous background level...

Страница 28: ...ction 3 3 1 Zero Calibration Allow more time for zero stabilization if usuing a biased sensor type Execute successful Span Calibration Section 3 3 2 Span Calibration Replace plug in toxic sensor if er...

Страница 29: ...ay 5 1 Smart Display Error Codes These error codes are determined by the smart display and must be rectified before normal operation of the unit will continue ER01 Firmware Incompatible Sensor firmwar...

Страница 30: ...epair or replace without charge any such equipment found to be defective during the warranty period Full determination of the nature of and responsibility for defective or damaged equipment will be ma...

Страница 31: ...s Texas 77381 for necessary repairs or replacement Terms Conditions The original serial number must be legible on each sensor element base Shipping point is FOB the Detcon factory Net payment is due w...

Страница 32: ...fication CSA and US NRTL Class I Division 1 Groups A B C D ATEX Class I Zone 1 Group IIC Ex d ib ib IIC T6 Approvals CCSAUS ATEX CE Marking Warranty Electronics 2 years Sensor Table 3 Environmental Sp...

Страница 33: ...able 3 Sensor Specific Data Gas GasName Part Number1 Response Time seconds SpanDrift Temperatur e Range C Humidity Range Warranty O2 Oxygen 371 343400 025 T95 30 5 signal loss year 20 to 50 15 to 90 2...

Страница 34: ...r Hydrogen Bromide 371 090800 030 T90 70 3 signal loss month 20 to 40 10 to 95 1 5 years HCl Hydrogen Chloride 371 090900 030 T90 70 2 signal loss month 20 to 40 10 to 95 1 5 years HCN Hydrogen Cyanid...

Страница 35: ...es Amines Ethyl Mercaptan C2H5SH Nitric Oxide NO Ammonia NH3 Ethylene C2H4 Nitrogen N2 Arsenic Triflouride AsF3 Ethylene Oxide C2H4O Nitrogen Dioxide NO2 Arsenic Pentaflouride AsF5 Fluorine F2 Ozone O...

Страница 36: ...275 75 n d n d n d n d n d n d n d n d 275 170 n d F2 n d n d n d 1000 0 n d n d n d n d 0 1 0 n d yes n d n d n d CH2O 330 40 330 340 330 75 n d n d n d n d n d n d n d n d 330 170 n d GeH4 n d n d n...

Страница 37: ...75 135 n d n d n d n d 275 150 n d 275 50 275 180 n d F2 5000 0 n d 1000 0 n d 1 1 3 n d n d n d n d n d n d n d n a CH2O n d 330 140 330 100 330 135 n d n d n d n d 330 150 n d 330 50 330 180 n d GeH...

Страница 38: ...75 220 n a 275 330 n d n d n d n d n d n d n d n d n d n d F2 n d n d n d n d n d range 0 n d 1 0 n d 5 0 1 3 3 0 n d CH2O 330 220 330 275 n a n d n d n d n d n d n d n d n d n d n d GeH4 n d n d n d...

Страница 39: ...15 n d 275 275 n d n d n d n d n d n d F2 n d 1 1 5 n d n d n d n d n d n d 100 0 1 0 05 0 1 0 2 n d n d CH2O n d n d n d n d 330 415 n d 330 275 n d n d n d n d n d n d GeH4 0 05 0 005 1 0 n d n d n...

Страница 40: ...00 220 200 n d 220 55 C2H4O n d n d n d n d n d n d 275 45 n d n d 275 200 275 200 n d 275 55 F2 n d n d n d n d 2 0 n d n d n d n d n d n d n d n d CH2O n d n d n d n d n d n d 330 45 n d n d 330 200...

Страница 41: ...mits When properly maintained it does offer the ability to function as gross leak detection method for ACN releases The lowest recommended scale range for ACN is 0 50 ppm The lowest recommended alarm...

Страница 42: ...Model DM 100 DM 100 Instruction Manual Rev 3 5 Page 38 of 41 8 5 Intrinsically Safe Installation Guidelines Control Drawing 3993 Figure 15 Control Drawing 3993...

Страница 43: ...00000 000 Programming Magnet Part Number Calibration Accessories 943 000000 000 Calibration Wind Guard 943 000006 132 Threaded Calibration Adapter 943 000000 000 Calibration Wind Guard 943 01747 T05 C...

Страница 44: ...02 15 2011 Added additional notes required by approval agencies LU 1 2 04 06 2011 Added references to 100 Series Bottom Housing Assembly with integral filter Added 100 Series Bottom Housing Assembly...

Страница 45: ...al Rev 3 5 Page 41 of 41 Shipping Address 4055 Technology Forest Blvd The Woodlands Texas 77381 Mailing Address P O Box 8067 The Woodlands Texas 77387 8067 Phone 888 367 4286 281 367 4100 Fax 281 292...

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