Detcon PI-700 User Manual

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Page 1

INSTRUCTION MANUAL

Detcon Model PI-700

PI-700 VOC Gas Sensors

This manual covers all ranges of PID based VOC Sensors

DETCON, Inc.

4055 Technology Forest Blvd.,

The Woodlands, Texas 77381

Ph.281.367.4100 / Fax 281.298.2868

www.detcon.com

April 15, 2014 • Document #3228 • Revision 2.5

Page 2

Model PI-700

Model PI-700 ii

Page 3

Model PI-700

Table of Contents

1. Introduction ..................................................................................................................................................1

1.1 Description.......................................................................................................................................... 1

1.2 Sensor Electronics Design .................................................................................................................. 1

1.3 Modular Mechanical Design............................................................................................................... 2

1.4 Intelligent Plug-in PID Gas Sensor..................................................................................................... 3

2. Installation....................................................................................................................................................4

2.1 ATEX Operational Guidelines for Safe Use....................................................................................... 4

2.2 Sensor Placement................................................................................................................................ 5

2.3 Sensor Contaminants and Interference ............................................................................................... 6

2.4 Mounting Installation.......................................................................................................................... 6

2.5 Electrical Installation .......................................................................................................................... 7

2.6 Field Wiring........................................................................................................................................ 8

2.7 Initial Start Up................................................................................................................................... 10

3. Operation....................................................................................................................................................12

3.1 Programming Magnet Operating Instructions................................................................................... 12

3.2 Operator Interface............................................................................................................................. 13

3.3 Normal Operation ............................................................................................................................. 14

3.4 Calibration Mode .............................................................................................................................. 15

3.4.1 AutoZero....................................................................................................................................... 15

3.4.2 AutoSpan...................................................................................................................................... 15

3.5 Program Mode .................................................................................................................................. 18

3.5.1 View Sensor Status....................................................................................................................... 18

3.5.2 Set AutoSpan Level...................................................................................................................... 20

3.5.3 Set Serial ID ................................................................................................................................. 21

3.5.4 Set Range...................................................................................................................................... 21

3.5.5 Set Gas Factor............................................................................................................................... 22

3.5.6 Set Zero Offset.............................................................................................................................. 22

3.5.7 Signal Output Check..................................................................................................................... 23

3.5.8 Restore Factory Defaults.............................................................................................................. 23

3.6 Program Features .............................................................................................................................. 24

3.6.1 Operational Features..................................................................................................................... 24

3.6.2 Fault Diagnostic/Failsafe Features ............................................................................................... 25

4. RS-485 Modbus™ Protocol .......................................................................................................................27

Content Description.............................................................................................................................................27

5. Service and Maintenance............................................................................................................................29

5.1 PID Plug-In Sensor Maintenance...................................................................................................... 29

5.2 Replacement of Intelligent Plug-in Sensor ....................................................................................... 36

5.3 Replacement of ITM......................................................................................................................... 37

5.4 Replacement of PI-700 Sensor Assembly......................................................................................... 38

6. Troubleshooting Guide...............................................................................................................................39

7. Customer Support and Service Policy........................................................................................................42

8. PI-700 Sensor Warranty .............................................................................................................................43

9. Appendix ....................................................................................................................................................44

9.1 Specifications.................................................................................................................................... 44

9.2 Gas Reference Table......................................................................................................................... 46

9.3 Spare Parts, Sensor Accessories, Calibration Equipment................................................................. 53

9.4 Model PI-700 Engineering Drawings ............................................................................................... 54

9.1 Revision History ............................................................................................................................... 54

Model PI-700 iii

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Model PI-700

Table of Figures

Figure 1 Typical Sensor Cell................................................................................................................................ 1

Figure 2 ITM Circuit Functional Block Diagram................................................................................................. 2

Figure 3 Sensor Assembly Front View ................................................................................................................ 2

Figure 4 Sensor Assembly Breakaway................................................................................................................ 3

Figure 5 Intelligent Plug-in Sensor....................................................................................................................... 3

Figure 6 PI-700 ATEX Approval Label............................................................................................................... 4

Figure 7 Outline and Mounting Dimensions........................................................................................................ 7

Figure 8 Typical Installation................................................................................................................................ 8

Figure 9 Sensor Wire Connections....................................................................................................................... 9

Figure 10 Magnetic Programming Tool............................................................................................................. 12

Figure 11 Magnetic Programming Switches..................................................................................................... 12

Figure 12 PI-700 Software Flowchart................................................................................................................ 14

Figure 14 UV Lamp Aging Expectation ............................................................................................................ 29

Figure 15 Splashguard Adapter with Integral Filter........................................................................................... 30

Figure 16 Plug-in sensor with Moisture control packet ..................................................................................... 30

Figure 17 Sensor Cell Parts................................................................................................................................ 31

Figure 18 Removal of Filter Cap........................................................................................................................ 31

Figure 19 Removal of Filter Media.................................................................................................................... 32

Figure 20 Removal of Spacer............................................................................................................................. 32

Figure 21 Removal of Cell Assembly................................................................................................................ 32

Figure 22 Removal of Lamp .............................................................................................................................. 33

Figure 23 Lamp cleaning.................................................................................................................................... 33

Figure 24 Polishing the Lamp ............................................................................................................................ 33

Figure 25 Lamp installation ............................................................................................................................... 34

Figure 26 Lamp seating...................................................................................................................................... 34

Figure 27 Cell Assembly installation................................................................................................................. 34

Figure 28 Spacer installation.............................................................................................................................. 35

Figure 29 Installing Filter Media........................................................................................................................ 35

Figure 30 Replacing the Cap.............................................................................................................................. 35

Figure 31 Sensor Assembly................................................................................................................................ 36

Figure 32 Sensor Cell and ITM Mating ............................................................................................................. 37

Figure 33 Sensor Cell and ITM Mating ............................................................................................................. 39

List of Tables

Table 1 Wire Gauge vs. Distance......................................................................................................................... 9

Table 2 Maximum and Minimum AutoSpan Settings........................................................................................ 20

Table 3 Modbus™ Registers.............................................................................................................................. 27

Table 4 Modbus™ Special Registers ................................................................................................................. 28

Table 3 Gas Factor Table ................................................................................................................................... 46

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: 281.292.2860 • www.detcon.com • [email protected]

Model PI-700 iv

Page 5

1. Introduction

1.1 Description

Detcon Model PI-700 VOC gas sensors are non-intrusive “Smart” sensors designed to detect and monitor a wide range of VOC and Toxic gasses in air. Ranges of detection for target gasses are from 0-1ppm up to 0-5,000ppm. The sensor features an LED display of current reading, fault and calibration status. The Sensor is equipped with standard analog 4-20mA and Modbus™ RS-485 outputs. A primary feature of the sensor is its method of automatic calibration, which guides the user through each step via fully scripted instructions displayed on the LED display.

The microprocessor-supervised electronics are packaged in an encapsulated module and housed in an explosion proof casting, called the ITM (Intelligent Transmitter Module). The ITM includes a four character alpha/numeric LED used to display sensor readings, and the sensor’s menu driven features when the handheld programming magnet is used.

Sensor Technology

Model PI-700

The sensors are based on plug-in replaceable miniature PID (Photo-Ionization Detector) sensor technology. The sensor is sensitive to ambient gases that have ionization potentials of < 10.6eV, making it highly sensitive but extremely non-specific. The sensor responds to most toxic VOC compounds and many other toxic gases as well. The sensor is comprised of a UV lamp covered by a specific optical filter which projects only radiation in the 10.6eV range. Target gases that diffuse into the sensor chamber with ionization potentials of <

10.6eV, are ionized by the radiation and give up free electrons. The free electrons are captured by the high voltage collection grid and provide a current that is directly proportional to the concentration of the target gas.

Figure 1 Typical Sensor Cell

1.2 Sensor Electronics Design

Intelligent Transmitter Module

The PI-700 Intelligent Transmitter Module (ITM) is a fully encapsulated microprocessor-based package that is universal in design and will accept any Detcon intelligent plug-in PID gas sensor. The ITM design uses an internal intrinsically safe barrier circuit that lifts the requirement for use of flame arrestors to achieve Class 1, Division 1 (Zone1) area classification. This facilitates fast response times and improved calibration repeatability on strongly absorbing gas types. The ITM circuit functions include extensive I/O circuit protection, on-board power supplies, internal intrinsically safe barrier circuit, microprocessor, LED display, magnetic programming switches, a linear 4-20mA DC output, and a Modbus™ RS-485 output. Magnetic program switches located on either side of the LED Display are activated via a hand-held magnetic

PI-700 Instruction Manual Rev. 2.5 Page 1 of 54

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Model PI-700

programming tool, thus allowing non-intrusive operator interface with the ITM. Calibration can be accomplished without declassifying the area. Electrical classifications are Class I, Division 1, Groups B C D and are ATEX Approved for Class I, Zone 1, Group IIC area classifications.

Figure 2 ITM Circuit Functional Block Diagram

LED Display

Program Switch #2

Program Switch #1

Splashguard Adapter

Locking Set-Screw

detcon inc.

MODEL

PI-700

VOC

Figure 3 Sensor Assembly Front View

1.3 Modular Mechanical Design

The Model PI-700 Sensor Assembly is completely modular and is made up of four parts (See Figure 4 for Assembly Break-away):

1) PI-700 Intelligent Transmitter Module (ITM)

2) Intelligent Plug-in Sensor (varies by range)

3) PI-700 Splash Guard Adapter with Integral Filter

4) Splash Guard.

NOTE: All metal components are constructed from electro polished 316 Stainless Steel in order to maximize corrosion resistance in harsh environments.

PI-700 Instruction Manual Rev. 2.5 Page 2 of 54

Page 7

Model PI-700

Lens and LCD Display

detcon inc.

MODEL

PI-700

Interconnect Wiring

Intelligent ransmitter Module (ITM) Microprocessor controlled circuit encapsulated in an explosion proof housing

Splash Guard

Splashguard

Adapter

O-Rings

Plug-In replaceable Sensor Cell

Housing Bottom Locking Set-Screw

PI-700

VOC

detcon inc.

MODEL

Magnetic Programming Switches

Figure 4 Sensor Assembly Breakaway

1.4 Intelligent Plug-in PID Gas Sensor

The Detcon range of PID gas sensors are field proven, intelligent plug-in sensors (one type is used for ranges of 20ppm and less, another is used for ranges greater than 20ppm.) The Sensors employ 100% encapsulated circuitry and over-sized gold-plated connections that eliminate corrosion problems. The intelligent design provides automatic recognition of gas type, units, full-scale range, and calibrations data when a new sensor is plugged in. The sensor can be accessed and replaced in the field very easily by releasing the locking setscrew and unthreading the Splashguard Adapter. The PID Sensor cell can be disassembled so that the lamp used can be cleaned or replaced. Detcon’s ranges of PID sensors has a long shelf life and are supported by an industryleading warranty.

Figure 5 Intelligent Plug-in Sensor

PI-700 Instruction Manual Rev. 2.5 Page 3 of 54

Page 8

Model PI-700

2. Installation

2.1 ATEX Operational Guidelines for Safe Use

1. Install sensor only in areas with classifications matching with those described on the approval label. Follow all warnings listed on the label.

Figure 6 PI-700 ATEX Approval Label

2. Ensure that the sensor is properly threaded into a suitable explosion-proof rated junction box with a downward pointing female ¾” NPT threaded connection. The sensor should be threaded up at least 5 full turns until tight, with the LED display facing forward. Avoid use of Teflon Tape, or any type of non-conductive pipe thread coating on the NPT threaded connection.

3. A good ground connection should be verified between the sensor’s metal enclosure and 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. Also verify a good ground connection between the junction box and earth ground.

4. Proper precautions should be taken during installation and maintenance to avoid the build-up of static charge on the plastic components of the sensor. These include the splashguard and splashguard adapter.

5. Do not substitute components that are not authorized by the scope of the safety approval. This may impair the intrinsic safety rating.

6. Do not operate the sensor outside of the stated operating temperature limits.

7. Do not operate the sensor outside the stated operating limits for voltage supply.

8. The sensor power supply common (black wire) must be referenced to the metal enclosure body (ground) during installation.

9. These sensors meet EN60079-0:2009, EN60079-1:2007, EN60079-11:2012 and EN50020.

10. These sensors have a maximum safe location voltage of Um=125V.

11. These sensors pass dielectric strength of 500VRMS between circuit and enclosure for a minimum of 1 minute at a maximum test current of 5mA.

PI-700 Instruction Manual Rev. 2.5 Page 4 of 54

Page 9

Model PI-700

NOTE:

2.2 Sensor Placement

Selection of sensor location is critical to the overall safe performance of the product. Six factors play an important role in selection of sensor locations:

(1) Density of the gas to be detected (2) Most probable leak sources within the industrial process (3) Ventilation or prevailing wind conditions (4) Personnel exposure (5) Maintenance access (6) Additional placement considerations

Density

Placement of sensors relative to the density of the target gas is such that sensors for the detection of heavier than air gasses should be located within 4 feet of grade as these heavy gasses will tend to settle in low lying areas. For gasses lighter than air, sensor placement should be 4-8 feet above grade in open areas or in pitched areas of enclosed spaces.

Leak Sources

The most probable leak 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 with experience in similar processes.

Ventilation

Normal ventilation or prevailing wind conditions can dictate efficient location of gas sensors in a manner where the migration of gas clouds is quickly detected.

Personnel Exposure

The undetected migration of gas clouds should not be allowed to approach concentrated personnel areas such as control rooms, maintenance or warehouse buildings. A more general and applicable thought toward selecting sensor location is combining leak source and perimeter protection in the best possible configuration.

Maintenance Access

Consideration should be given to providing easy access for maintenance personnel. Consideration should also be given to the consequences of close proximity to contaminants that may foul the sensor prematurely.

All installations of the gas sensor should point straight down (refer to Figure 8).

Improper sensor orientation may result in false readings and permanent sensor damage.

Additional Placement Considerations

The sensor should not be positioned where it may be sprayed or coated with surface contaminating substances. Painting sensor assemblies is prohibited.

Although the sensor is designed to be RFI resistant, it should not be mounted in close proximity to highpowered radio transmitters or similar RFI generating equipment.

Mount in an area void of high wind, accumulating dust, rain or splashing from hose spray, direct steam releases, and continuous vibration. If the sensor cannot be mounted away from these conditions then make sure the Detcon Harsh Environment Splashguard accessory is used.

PI-700 Instruction Manual Rev. 2.5 Page 5 of 54

Page 10

Model PI-700

Do not mount in locations where temperatures will exceed the operating temperature limits of the sensor. Where direct sunlight leads to exceeding the high temperature-operating limit, use a sunshade to help reduce temperature.

2.3 Sensor Contaminants and Interference

PID VOC and toxic gas sensors will respond to any gas with an ionization potential <10.6eV. This is not a selective measurement technique, and hence can be used to measure a wide range of gases.

Some of the most commonly present gasses that potentially cause PID interference are listed in Table 5 Gas Factor Table (refer to Section 9). The presence of cross-interference gases in an area does not preclude the use of this sensor technology, although it is likely that the sensor will experience false high readings should exposure occur.

Some heavy organic molecules may be polymerized onto, or strongly adhere to, the optical filter of the lamp. When this occurs, the lamp will require cleaning or replacement.

Relative Response Gas Matrix

Table 5 Gas Factor Table shows the response of the PID sensor to a long list of components. It includes the compound name, synonyms/abbreviations, and chemical formula. It also lists the 10.6eV Response Factor (the measure of how strong the signal from the sensor is in reference to Isobutylene gas). Isobutylene gas is the standard reference used with PID sensors, the lower the Response Factor, the stronger the signal.

2.4 Mounting Installation

The PI-700 sensor assembly is designed to be threaded into a ¾” Female NPT fitting of a standard cast metal, Explosion-Proof Enclosure or Junction Box. Two wrench flats on the upper section of the sensor should be used to thread the sensor into a ¾” female NPT receiving connection. Thread the sensor up until tight (5 turns is typically expected) and until the display is pointed in the direction that sensor will normally be viewed and accessed.

The PI-700 should be vertically oriented so that the sensor points straight down. The explosion-proof enclosure or junction box would then typically be mounted on a wall or pole. Detcon provides a standard selection of junction boxes available as sensor accessories (See Figure 7 below). Any appropriately rated enclosure with a downward facing ¾” NPT female connection will suffice.

When mounting on a wall, it is recommended to use a 0.25”-0.5” spacer underneath the mounting ears of the Detcon standard J-Box to offset the sensor assembly from the wall and create open access around the sensor assembly. Spacing requirements for other junction boxes may vary.

When mounting on a pole, secure the Junction Box to a suitable mounting plate and attach the mounting plate to the pole using U-Bolts. (Pole-Mounting brackets for Detcon J-box accessories are available separately.)

PI-700 Instruction Manual Rev. 2.5 Page 6 of 54

Page 11

5.5"

NOTE:

4.95"

Model PI-700

3.675"

3/4" NPT

Ø0.265" x2

Mounting Holes

12.55"

5.25"

7.935"

5.53"

8-32 Thread Ground Point

Explosion Proof Enclosure

Junction-Box

(Detcon's Junction-Box shown)

Use Spacers to move

the J-Box and Sensor

detcon inc.

MODEL

PI-700

VOC

2.125"

Assembly away from the

wall at least 0.25-0.5" to

allow access to Sensor

Sensor Assembly

Splash Guard

Figure 7 Outline and Mounting Dimensions

Bolt

Mounting

Spacer

Wall (or other

mounting surface)

2.5 Electrical Installation

The Sensor Assembly should be installed in accordance with local electrical codes. The sensor assemblies are designed for Class I, Division 1, Groups B, C, & D area classifications, and for ATEX Class I, Zone 1, Group IIC area classifications.

Proper electrical installation of the gas sensor is critical for conformance to Electrical Codes and to avoid damage due to water leakage. Refer to Figure 8 and Figure 9 for proper electrical installation.

If a conduit run exits the secondary port, repeat the installation technique shown in

Figure 8.

In Figure 8, the drain allows water condensation inside the conduit run to safely drain away from the sensor assembly. The electrical seal fitting is required to meet the National Electrical Code per NEC Article 500-3d (or Canadian Electrical Code Handbook Part 1 Section 18-154). Requirements for locations of electrical seals are covered under NEC Article 501-5. Electrical seals also act as a secondary seal to prevent water from entering the wiring terminal enclosure. However, they are not designed to provide an absolute water-tight seal, especially when used in the vertical orientation.

A conduit seal is typically required to be located within 18" of the J-Box and Sensor

Assembly. Crouse Hinds type EYS2, EYD2 or equivalent are suitable for this purpose.

PI-700 Instruction Manual Rev. 2.5 Page 7 of 54

Page 12

Model PI-700

NOTE:

The Detcon Warranty does not cover water damage resulting from water leaking into the enclosure. Since the electronics are 100% epoxy encapsulated, only the wire terminations can get wet. This could cause abnormal operation and possibly cause corrosion to the terminal connections. However, it would not be expected to cause permanent damage to the sensor.

Conduit

"T"

Drain

Customer

Supplied Wiring

Transient Protection Module (TPM) P/N 500-003087-100

mA N/U A(+)

B(-)

(+)

(-)

Mount TPM in Explosion

Proof Enclosure to ground

unit properly. Mount to

bottom of enclosure using

6-32 screws.

EYS Seal Fitting

Explosion

Proof

Junction Box

Blu

Blk

Grn

Wiring to

Wht

A(+)

B(-)

Red

(+)mA(-)

Sensor Assembly

DM-700

Sensor

Assembly

6-Pin Pheonix Plug

P/N 306-175705-100

Plug any unused

Explosion Proof

Housing

(J-Box)

detcon inc.

MODEL

PI-700

VOC

ports

Figure 8 Typical Installation

Any unused ports should be blocked with suitable ¾” male NPT plugs. Detcon supplies one ¾” NPT male plug with their accessory J-box enclosures. If connections are other than ¾” NPT, use an appropriate male plug of like construction material.

2.6 Field Wiring

Detcon Model PI-700 toxic gas sensors assemblies require three conductor connections between power supplies and host electronic controller’s 4-20mA output, and two conductor connections for the Modbus™ RS485 serial interface. Wiring designations are + (DC), – (DC), mA (sensor signal), and Modbus™ RS-485 A (+), and B (-). Maximum wire length between sensor and 24VDC source is shown in the Table 1 below. Maximum wire size for termination in the Detcon J-Box accessory is 14 gauge.

PI-700 Instruction Manual Rev. 2.5 Page 8 of 54

Page 13

Model PI-700

NOTE 1:

NOTE

NOTE 3:

Table 1 Wire Gauge vs. Distance

AWG Wire Dia. Meters Feet

Over-Current

Protection

22 0.723mm 700 2080 3A 20 0.812mm 1120 3350 5A 18 1.024mm 1750 5250 7A 16 1.291mm 2800 8400 10A 14 1.628mm 4480 13,440 20A

Wiring table is based on stranded tinned copper wire and is designed to serve as a

reference only.

: Shielded cable is required for installations where cable trays or conduit runs include high voltage lines or other possible sources of induced interference. Separate conduit runs are highly recommended in these cases.

The supply of power should be from an isolated source with over-current protection

as stipulated in table.

Terminal Connections

CAUTION: Do not apply System power to the sensor until all wiring is properly terminated. Refer to

Section 2.7 Initial Start Up

Power from and 4-20mA

out to Control Device

Modbus RS-485 to

Host Control Device

Customer

Supplied Wiring (In)

(+)

(-)

A(+)

B(-)

Explosion

Proof

Junction Box

Blu

Blk

Grn

Red

(+)mA(-)

Sensor Assembly

A(+)

Wiring to

Customer

Supplied Wiring

(Out to next Device)

(+) (-) mA

A(+) B(-)

Modbus RS-485 to

next Device

Install a 100-250 Ohm

resistor if the 4-20mA

output is not used

Wht

B(-)

Figure 9 Sensor Wire Connections

a) Remove the junction box cover. Identify the terminal blocks for customer wire connections.

b) Observing correct polarity, terminate the 3-conductor 4-20mA field wiring (+, -, mA) to the sensor

assembly wiring in accordance with the detail shown in Figure 9. If the 4-20mA output is not used,

install a 100-250Ω resistor between the mA and (-) terminals on the Transient Protection Module.

PI-700 Instruction Manual Rev. 2.5 Page 9 of 54

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Model PI-700

NOTE

: If the 4-20mA output is not being used, a 100-250Ω resistor must be installed between

the mA and (-) terminals on the Transient Protection Module to ensure RS-485 communication is not disrupted by a 4-20mA Fault.

a) If applicable, terminate the RS-485 serial wiring as shown in Figure 9. Use the second plug (Out) as

termination point on the customer side to facilitate a continuous RS-485 serial loop

The RS-485 (if applicable) requires 24 gauge, two conductor, shielded, twisted pair cable between the sensor and host. General Cable Commodore part number ZO16P0022189 is recommended.

: Install a 120-ohm resistor across A & B terminals on the last sensor in the serial loop.

c) Trim all exposed wire leads if they are not permanently landed in the terminal block.

d) Replace the junction box cover.

2.7 Initial Start Up

Upon completion of all mechanical mounting and termination of all field wiring, apply system power in the range of 11.5-30VDC (24VDC typical) and observe the following normal conditions:

a) PI-700 display reads close to “0”, and no fault messages are flashing.

b) A temporary upscale or downscale reading may occur as the sensor stabilizes. This upscale reading will

typically decrease to near “0”ppm within 1-2 minutes of power-up, assuming there is no gas in the area of the sensor. In some extreme cases, the sensor may require up to 5 minutes before the lamp ignites and becomes operational.

: The 4-20mA signal is held constant at 4mA for the first two minutes after power up.

Initial Operational Tests

After a warm up period of 1 hour (or when zero has stabilized), the sensor should be checked to verify sensitivity to the specific target gas of the application (not just Isobutylene span gas).

: A secondary filter accessory, built into the splashguard adapter, is used with the Model 700 PID sensors (Figure 14). This multi-stage filter is designed to prevent heavy and complex airborne VOC molecules from contacting the PID sensor and causing surface contamination and subsequent reading drift. When used effectively, it may extend the time between required sensor cleaning and / or sensor replacement. Its use is limited to application cases where the target gas(s) are moderate to small VOC molecules (i.e. benzene and smaller molecular weights). Before installing, it must be verified that the filter does not inhibit response to the target gas being monitored. Do not use this filter if the target gas response is inhibited. The service life of the filter may vary depending on the application; however, it is advised to change it out at least on a 18-24 month cycle.

Material Requirements

 Detcon PN 613-120000-700 700 Series Splash Guard with integral Cal Port -OR-  Detcon PN 943-000006-132 Threaded Calibration Adapter

PI-700 Instruction Manual Rev. 2.5 Page 10 of 54

Page 15

Model PI-700

 Detcon Span Gas (See Detcon for Ordering Information). Recommended span gas is 50% of range

with Isobutylene in air or N2balance.

 Detcon P/N 985-241100-321 In-Line Humidifying Tube 24"

a) Attach the calibration adapter to the threaded sensor housing or connect tubing to integral cal port. Apply

the test gas at a controlled flow rate of 200 - 500cc/min using the in-line humidifying tube, (200cc/min is the recommended flow). Observe that the ITM display increases to a level near that of the applied calibration gas value.

b) Remove test gas and observe that the ITM display decreases to “0”.

Initial operational tests are complete. PI-700 VOC gas sensors are factory calibrated prior to shipment, and should not require significant adjustment on start up. However, it is recommended that a complete calibration test and adjustment be performed 16 to 24 hours after power-up. Refer to zero and span calibration instructions in Section 3.4.

PI-700 Instruction Manual Rev. 2.5 Page 11 of 54

Page 16

Model PI-700

NOTE

3. Operation

3.1 Programming Magnet Operating Instructions

The Operator Interface of the Model 700 Series gas sensors is accomplished via two internal magnetic switches located to either side of the LED display (see Figure 11). The two switches, labeled “PGM1” and “PGM2”, allow for complete calibration and configuration, thereby eliminating the need for area declassification or the use of hot permits.

Figure 10 Magnetic Programming Tool

The magnetic programming tool (Figure 10) is used to operate the magnetic switches. Switch action is defined as momentary contact, 3-second hold, and 10-second hold. (Hold times are defined as the time from the point when the arrow-prompt “◄“appears.) For momentary contact use, the programming magnet is briefly held over a switch location. For 3-second hold, the programming magnet is held in place over the switch location for three seconds. For 10-second hold, the programming magnet is held in place over the switch location for 10 seconds. The 3 and 10 second holds are generally used to enter calibration/program menus and save new data. The momentary contact is generally used to move between menu items and to modify set-point values. Arrows (“◄” and “►”) are used on the LED display to indicate when the magnetic switches are activated. The location of “PGM1” and “PGM2” are shown in Figure 11.

LED Display

Program Switch #2

Program Switch #1

detcon inc.

MODEL

PI-700

VOC

Figure 11 Magnetic Programming Switches

: While in the Program Mode, if there is no magnetic switch interaction after 4 consecutive menu scrolls, the sensor will automatically revert to normal operating condition. While changing values inside menu items, if there is no magnet activity after 3-4 seconds

the sensor will revert to the menu scroll.

(Exception to this is with “Signal Output Check” mode.)

PI-700 Instruction Manual Rev. 2.5 Page 12 of 54

Page 17

Model PI-700

3.2 Operator Interface

The operating interface is menu-driven via the two magnetic program switches located under the target marks of the sensor housing. The two switches are referred to as “PGM1” and “PGM2”. The menu list consists of three major items that include sub-menus as indicated below. (Refer to the complete Software Flow Chart.)

Normal Operation

Current Reading and Gas Type/Fault Status

Calibration Mode

AutoZero AutoSpan

Program Mode

View Sensor Status

Sensor Model Type Current Software Version Gas Type Range of Detection Serial ID address AutoSpan Level Days Since Last AutoSpan Remaining Sensor Life Gas Factor Zero Offset mA Output Input Voltage Supply Sensor Temperature Gain Setting

Raw Counts Set AutoSpan Level Set Serial ID Set Range Set Gas Factor Set Zero Offset Signal Output Check Restore Default Settings

PI-700 Instruction Manual Rev. 2.5 Page 13 of 54

Page 18

Normal Operation

PGM1 (3)

PGM2 (10)

View Sensor Status

Auto Time-Out

PGM1/2 (M) PGM1/2 (3)

Model Type

PGM1 (3) PGM2 (3)

AutoZero

AutoSpan

Set AutoSpan Level

AutoTime-out

PGM1/2 (M)

PGM1/2 (3)

Software Flowchart

Set Serial ID

Auto Time-Out

PGM1/2 (M)

PGM1/2 (3)

Set Range

Auto Time-Out

PGM1/2 (M)

PGM1/2 (3)

Model PI-700

Version X.XX

Gas Type

Range XXX

Serial ID XX

AutoSpan @ XX

Last Cal XX Days

Sensor Life XXX%

Gas Factor = XX

Zero Offset = X.X

mA Output = XX.XX

Input Volt = XX.XX

Temperature = XXX

Gain Setting = XXX

Raw Counts = XXX

inc

PGM2 (S) PGM1 (S)

PGM1/2 (3)

Set Gas Factor

Auto Time-Out

PGM1/2 (M)

PGM1/2 (3)

PGM2 (S) PGM1 (S)

PGM1/2 (3)

Restore Defaults

Auto Time-Out

PGM1/2 (M)

PGM2 (10)

Defaults Restored

dec

inc

PGM2 (S) PGM1 (S)

PGM1/2 (3)

Set Zero Offset

Auto Time-Out

PGM1/2 (M)

PGM1/2 (3)

PGM2 (S) PGM1 (S)

PGM1/2 (3)

dec

LEGEND: PGM1 - Program Switch Location #1

PGM2 - Program Switch Location #2 (S) - Momentary Swipe

(M) - Momentary hold of Magnet during text

scroll until the ">" appears, then release (3) - 3 second hold from ">" prompt (10) - 10 second hold from ">" prompt Auto Time-out - 5 seconds

inc - Increase dec - Decrease X, XX, XXX - numeric values

inc

PGM2 (S) PGM1 (S)

PGM1/2 (3)

Signal Output Check

Auto Time-Out

PGM1/2 (M)

PGM1/2 (10)

Simulation

PGM1/2 (3)

dec

Figure 12 PI-700 Software Flowchart

3.3 Normal Operation

In normal operation, the ITM Display continuously shows the current sensor reading, which will normally appear as “ 0 ”. Once every 60 seconds the LED display will flash the sensor’s measurement units and gas type (i.e. ppm VOC). If the sensor is actively experiencing any diagnostic faults, a “Fault Detected” message will scroll across the display on the ITM display once every minute instead of the units of measure and the gas type. At any time, while the sensor is in “Fault Detected” mode, PGM1 or PGM2 can be swiped to prompt the sensor to display a list of the active faults.

In normal operation, the 4-20mA current output linearity corresponds with the full-scale range. The RS-485 Modbus™ serial output provides the current gas reading and complete fault status on a continuous basis when polled by the master device.

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NOTE:

3.4 Calibration Mode

3.4.1 AutoZero

The AutoZero function is used to zero the sensor. Local ambient air can be used to zero calibrate a VOC gas sensor as long as it can be confirmed that it contains no target or interference gasses. If this cannot be confirmed then a zero air or N2cylinder should be used.

Material Requirements:

 Detcon PN 327-000000-000 MicroSafe™ Programming Magnet  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  Detcon PN 942-001123-000 Zero Air cal gas (or use ambient air if no target gas is present).  Detcon P/N 942-640023-100 Nitrogen 99.99%  Detcon P/N 985-241100-321 In-Line Humidifying Tube 24"

The Calibration Wind Guard must be used when the Splashguard Adapter with integral Cal Port is used. Failure to use the Calibration Wind Guard may result in an inaccurate AutoZero calibration.

a) For VOC sensors, if the ambient air is known to contain no target gas content, then it can be used for zero

calibration. If a zero gas or N2cal cylinder is going to be used, be sure to use in-line humidifying tube to present cal gas with correct ambient humidity level. Attach the calibration adapter and set flow rate of 200-500cc/min and let sensor purge for 1-2 minutes before executing the AutoZero.

b) From Normal Operation, enter Calibration Mode by holding the programming magnet over PGM1 for 3

seconds. Note, the “◄” prompt will show that the magnetic switch is activated during the 3 second hold

period. The display will then scroll “PGM1=AutoZero …PGM2=AutoSpan”. Hold the programming

magnet over PGM1 for 3 seconds once the “►” prompt appears to execute AutoZero (or allow to timeout

in 5 seconds if AutoZero is not desired).

Upon entering Calibration Mode, the 4-20mA signal drops to 2mA and is held at this level until the program returns to normal operation. Modbus™ Status Register bit 14 is also set to signify when the sensor is in-calibration mode.

c) The ITM will display the following sequence of text messages as it proceeds through the AutoZero

sequence:

Zero Cal . . . Setting Zero . . . Zero Saved

a) Remove the zero gas and calibration adapter, if applicable.

3.4.2 AutoSpan

The AutoSpan function is used to span calibrate the sensor. Unless otherwise specified, span adjustment is recommended at 50% of range. This function is called “AUTO SPAN”.

Before performing AutoSpan Calibration, verify that the AutoSpan level matches the

span calibration gas concentration as described in Section 3.5.2 Set AutoSpan Level.

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Model PI-700

NOTE 1:

NOTE 2:

NOTE 3:

NOTE 4:

NOTE 5:

Material Requirements:

 Detcon PN 327-000000-000 MicroSafe™ Programming Magnet

 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

 Target Span Gas (See Detcon for Ordering Information) representing the target gas (with air or N

balance) between 10% and 90% of the full-scale range - OR -

 Isobutylene Span Gas. Recommended span gas is 50% of range with Isobutylene in air or N2balance

 Detcon P/N 985-241100-321 In-Line Humidifying Tube 24"

Contact Detcon for Ordering Information on Span Gas cylinders.

For span, an Isobutylene gas concentration of 50% of range is normally recommended (see Note 4). This should be supplied at a controlled flow rate of 500cc/min using the in-line humidifying tube. Other concentrations can be used if they fall within allowable levels of 5% to 100% of range.

If Isobutylene is used as span gas, the correct Gas Factor must be used.

It is strongly recommended to use the target VOC gas to calibrate for span. This eliminates any possibility that Isobutylene cross-calibration is not accurate. Cross-calibration by use of other gasses should be confirmed by Detcon or at a minimum executed relative to the information provided in Table 5.

The Calibration Wind Guard must be used when the Splashguard Adapter with integral Cal Port is used. Failure to use the Calibration Wind Guard may result in an inaccurate AutoSpan calibration.

CAUTION: Verification that the calibration gas level setting matches the calibration span gas

concentration is required before executing “AutoSpan” calibration. These two numbers must be equal.

AutoSpan consists of entering Calibration Mode and following the menu-displayed instructions. The display will ask for the application of span gas in a specific concentration. The applied gas concentration must be equal to the calibration gas level setting. The factory default setting and recommendation for span gas concentration is 50% of range. If a span gas containing the recommended concentration is not available, other concentrations may be used as long as they fall between 5% and 100% of range. However, any alternate span gas concentration value must be programmed via the “Set AutoSpan Level” menu before proceeding with AutoSpan calibration. Follow the instructions “a” through “e” below for AutoSpan calibration.

a) Verify that the AutoSpan Level is equal to the Calibration Span Gas Concentration. (Refer to View

Sensor Status in Section 3.5.1.) If the AutoSpan Level is not equal to the Calibration span gas concentration, adjust the AutoSpan Level as instructed in Section 3.5.2 Set AutoSpan Level.

b) From Normal Operation, enter Calibration Mode by holding the programming magnet over PGM1 for 3

seconds. Note, the “◄” prompt will show that the magnetic switch is activated during the 3 second hold

period. The display will then scroll “PGM1=AutoZero . . . PGM2=AutoSpan”. Hold the programming

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Model PI-700

NOTE:

NOTE 1

NOTE 2

“Range Fault”

NOTE 3

“Stability Fault”

magnet over PGM2 for 3 seconds to execute AutoSpan (or allow to timeout in 5 seconds if AutoSpan is not intended). The ITM will then scroll “Apply XX ppm Gas”.

c) Apply the span calibration test gas for VOC gas sensors at a flow rate of 200-500cc/min using the in-line

humidifying tube (200cc/min is recommended). As the sensor signal begins to increase the display will switch to flashing “XX“reading as the ITM shows the sensor’s “as found” response to the span gas presented. If it fails to meet the minimum in-range signal change criteria within 2½ minutes, the display will report “Range Fault” twice and the ITM will return to normal operation, aborting the AutoSpan sequence. The ITM will continue to report a “Range Fault” and will not clear the fault until a successful AutoSpan is completed.

Assuming acceptable sensor signal change, after 1 minute the reading will auto-adjust to the programmed AutoSpan level. During the next 30 seconds, the AutoSpan sequence checks the sensor for acceptable reading stability. If the sensor fails the stability check, the reading is re-adjusted back to the AutoSpan level and the cycle repeats until the stability check is passed. Up to three additional 30-second stability check periods are allowed before the unit reports a “Stability Fault” twice and the ITM will return to normal operation, aborting the AutoSpan sequence. The ITM will continue to report a “Stability Fault” and will not clear the fault until a successful AutoSpan is completed.

If the sensor passes the stability check, the ITM reports a series of messages: “Span OK”

“Sensor Life XXX%”

“Remove Span Gas”

d) Remove the span gas source and calibration adapter. The ITM will report a live reading as it clears toward

“0”. When the reading clears below 10% of range, the ITM will display “Span Complete” and will revert to normal operation. If the sensor fails to clear to less than 10% in less than 5 minutes, a “Clearing Fault” will be reported twice and the ITM will return to normal operation, aborting the AutoSpan sequence. The ITM will continue to report a “Clearing Fault” and will not clear the fault until a successful AutoSpan is completed.

When calibrating sensors where there are high levels of VOC gases in the ambient

background, use Zero Air or N2to assist clearing to <10% of range.

e) The AutoSpan calibration is complete.

: Upon entering the calibration menu, the 4-20mA signal drops to 2mA and is held at

this level until the program returns to normal operation.

: If the sensor fails the minimum signal change criteria, a

will be

declared and a “Fault Detected” message will be displayed alternately with the sensor’s current reading. The 4-20mA output will be taken to 0mA and the ‘Range Fault’ fault bit will be set on the Modbus™ output.

: If the sensor fails the stability criteria, a

will be declared and a

“Fault Detected” message will be displayed alternately with the sensor’s current reading. The 4-20mA output will be taken to 0mA and the ‘Stability Fault’ fault bit will be set on the Modbus™ output.

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NOTE 4

Clearing Fault

: If the sensor fails the clearing time criteria, a “

” will be declared and a

“Fault Detected” message will be displayed alternately with the sensor’s current reading. The 4-20mA output will be taken to 0mA and the ‘Clearing Fault’ fault bit will be set on the Modbus™ output.

3.5 Program Mode

Program Mode provides a “View Sensor Status” menu to check operational and configuration parameters. Program Mode provides for adjustment of the AutoSpan Level, Serial ID, Set Range, Set Gas Factor, and Set Zero Offset. Additionally, Program Mode includes the diagnostic function “Signal Output Check” and “Restore Factory Defaults”.

The Program Mode menu items appear in the order presented below:

View Sensor Status Set AutoSpan Level Set Serial ID Set Range Set Gas Factor Set Zero Offset Signal Output Check Restore Default Settings

Navigating Program Mode

From Normal Operation, enter Program Mode by holding the magnet over PGM2 for 10 seconds. Note, the

“◄” prompt will show that the magnetic switch is activated during the 10 second hold period. The ITM will

enter Program Mode and the display will display the first menu item “View Sensor Status”. To advance to the next menu item, hold the magnet over PGM1 or PGM2 while the current menu item’s text is scrolling. At the

conclusion of the text scroll the arrow prompt (“◄” for PGM2 or “►” for PGM1) will appear, immediately

remove the magnet. The ITM will advance to the next menu item. Repeat this process until the desired menu item is displayed. Note, PGM1 moves the menu items from right to left and PGM2 moves the menu items from left to right.

To enter a menu item, hold the magnet over PGM1 or PGM2 while the menu item is scrolling. At the

conclusion of the text scroll the “◄”prompt (“◄” for PGM2 or “►” for PGM1) will appear, continue to hold

the magnet over PGM1 or PGM2 for an additional 3-4 seconds to enter the selected menu item. If there is no magnet activity while the menu item text is scrolling (typically 4 repeated text scrolls), the ITM will automatically revert to Normal Operation.

3.5.1 View Sensor Status

View Sensor Status displays all current configuration and operational parameters including: sensor type,

software version number, gas type, detection range, AutoSpan level, days since last AutoSpan, estimated remaining sensor life, gas factor, zero offset, mA output, input voltage, sensor ambient temperature, gain setting, and the sensor’s raw counts.

From the View Sensor Status text scroll, hold the magnet over PGM1 or PGM2 until the “◄” prompt appears and continue to hold the magnet in place for an additional 3-4 seconds (until the display starts to scroll “Status Is”). The display will scroll the complete list of sensor status parameters sequentially:

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Sensor Model Type

The menu item appears as: “Model PI-700”

Current Software Version

The menu item appears as: “Version 1.XX”

Gas Type

The menu item appears as: “ Gas Type = VOC”

Range of Detection.

The menu item appears as: “Range XXX”

Serial ID address.

The menu item appears as: “Serial ID XX”

AutoSpan Level.

The menu item appears as: “AutoSpan Level XX”

Model PI-700

Days Since Last AutoSpan.

The menu items appears as: “Last Cal XX days”

Remaining Sensor Life.

The menu item appears as: “Sensor Life 100%”

Gas Factor

The menu item appears as: “Gas Factor X.X”

Zero Offset

The menu item appears as: “Zero Offset X.X”

mA Output

The menu item appears as: “mA Output XX.XX”

Input Voltage Supply

The menu item appears as: “Voltage XX.X VDC”

Sensor Temperature

The menu item appears as: “Temp XX C”

Gain Setting

The menu item appears as: “Gain XX”

Raw Counts

The menu item appears as: “Counts XXXX”

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Model PI-700

When the status list sequence is complete, the ITM will revert to the “View Sensor Status” text scroll. The user can either: 1) review list again by executing another 3-4 second hold, 2) move to another menu item by executing a momentary hold over PGM1 or PGM2, or 3) return to Normal Operation via automatic timeout of about 15 seconds (the display will scroll “View Sensor Status” 4 times and then return to Normal Operation).

3.5.2 Set AutoSpan Level

Set AutoSpan Level is used to set the span gas concentration level that is being used to calibrate the sensor.

This level is adjustable from 1% to 99% of range depending on the range of the sensor (see Table 2) . The current setting can be viewed in View Program Status.

Table 2 Maximum and Minimum AutoSpan Settings

Sensor

Full Scale

Range

1.00 0.01 0.99 0.01 95 1 90 Note 1

2.00 0.01 1.99 0.01 100 1 95 Note 1

3.00 0.01 2.99 0.01 150 1 100 Note 1

4.00 0.01 3.99 0.01 200 1 150 Note 1

5.00 0.01 4.99 0.01 250 1 200 Note 1

6.00 0.01 5.99 0.01 300 1 250 Note 1

7.00 0.01 6.99 0.01 350 1 300 Note 1

8.00 0.01 7.99 0.01 400 1 350 Note 1

9.00 0.01 8.99 0.01 450 1 400 Note 1

10.0 1.0 9.9 0.1 500 1 450 Note 1

11.0 1.0 10.9 0.1 550 1 500 Note 1

12.0 1.0 11.9 0.1 600 1 550 Note 1

13.0 1.0 12.9 0.1 650 1 600 Note 1

14.0 1.0 13.9 0.1 700 1 650 Note 1

15.0 1.0 14.9 0.1 750 1 700 Note 1

16.0 1.0 15.9 0.1 800 1 750 Note 1

17.0 1.0 16.9 0.1 850 1 800 Note 1

18.0 1.0 17.9 0.1 900 1 850 Note 1

19.0 1.0 18.9 0.1 950 1 900 Note 1

20.0 1.0 19.9 0.1 1000 1 950 Note 1

21.0 1.0 20.9 0.1 1500 1 1000 Note 1

22.0 1.0 21.9 0.1 2000 1 1500 Note 1

23.0 1.0 22.9 0.1 2500 1 2000 Note 1

24.0 1.0 23.9 0.1 3000 1 2500 Note 1

25.0 1.0 24.9 0.1 3500 1 3000 Note 1 30 1 25 Note 1 4000 1 3500 Note 1 35 1 30 Note 1 4500 1 4000 Note 1 40 1 35 Note 1 5000 1 4500 Note 1 45 1 40 Note 1 5500 1 5000 Note 1 50 1 45 Note 1 6000 1 5500 Note 1 55 1 50 Note 1 6500 1 6000 Note 1 60 1 55 Note 1 7000 1 6500 Note 1 65 1 60 Note 1 7500 1 7000 Note 1 70 1 65 Note 1 8000 1 7500 Note 1 75 1 70 Note 1 8500 1 8000 Note 1 80 1 75 Note 1 9000 1 8500 Note 1 85 1 80 Note 1 9500 1 9000 Note 1 90 1 85 Note 1 10000 1 9500 Note 1

Note 1: When the AutoSpan value is between 1 and 25, the adjustment increment is 1

Minimum AutoSpan

Level

When the AutoSpan value is between 26 and 100, the adjustment increment is 5

Maximum

AutoSpan

Level

Adjustment

Increment

Sensor

Full Scale

Range

Minimum AutoSpan

Level

Maximum

AutoSpan

Level

Adjustment

Increment

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Model PI-700

When the AutoSpan value is between 101 and 1000, the adjustment increment is 50 When the AutoSpan value is between 1001 and 10000, the adjustment increment is 500

The menu item appears as: “Set AutoSpan Level”.

From the Set AutoSpan Level text scroll, hold the magnet over PGM1 or PGM2 until the “◄” prompt appears and continue to hold the magnet in place for an additional 3-4 seconds (until the display starts to scroll “Set Level”). The display will switch to “ XX“ (where XX is the current gas level). Swipe the magnet momentarily over PGM2 to increase or PGM1 to decrease the AutoSpan Level until the correct level is displayed. When the correct level is achieved, hold the magnet over PGM1 or PGM2 for 3-4 seconds to accept the new value. The display will scroll “Level Saved”, and revert to “Set AutoSpan Level” text scroll.

Move to another menu item by executing a momentary hold, or return to Normal Operation via automatic timeout of about 15 seconds (the display will scroll “Set AutoSpan Level” 4 times and then return to Normal Operation).

3.5.3 Set Serial ID

Detcon Model PI-700 sensors can be polled serially via RS-485 Modbus™ RTU. Refer to Section 4.0 for details on using the Modbus™ output feature.

Set Serial ID is used to set the Modbus™ serial ID address. It is adjustable from 01 to 256 in hexadecimal format (01-FF hex). The current serial ID can be viewed in View Sensor Status using the instruction given in Section 3.5.1 View Sensor Status.

The menu item appears as: “Set Serial ID”.

From the “Set Serial ID” text scroll, hold the programming magnet over PGM1 or PGM2 until the “◄” prompt appears and continue to hold the magnet in place for an additional 3-4 seconds (until the display starts to scroll “Set ID”). The display will then switch to “ XX“ (where XX is the current ID address). Swipe the magnet momentarily over PGM2 to increase or PGM1 to decrease the hexadecimal number until the desired ID is displayed. Hold the magnet over PGM1 or PGM2 for 3-4 seconds to accept the new value. The display will scroll “ID Saved”, and revert to “Set Serial ID” text scroll.

Move to another menu item by executing a momentary hold, or, return to Normal Operation via automatic timeout of about 15 seconds (the display will scroll “Set Serial ID” 5 times and then return to Normal Operation).

3.5.4 Set Range

The full-scale range of a PI-700 sensor is determined at the time of order. The Intelligent Plug-in Sensor is factory calibrated for this range. However, if the application requirements change and the user needs to alter the original range, the “Set Range” function can be used to make field adjustments.

The currently selected full-scale range is displayed in the “View Sensor Status” menu. The factory calibrated full-scale range is printed on the Intelligent Plug-in Sensor Label. When a new range is selected the 4-20mA and Modbus™ outputs will automatically be rescaled, and the span gas level will default to 50% of the new range.

The menu item appears as: “Set Range”

From the “Set Range” text scroll, hold the programming magnet over PGM1 or PGM2 until the “◄” prompt appears and continue to hold the magnet in place for an additional 3-4 seconds (until the display starts to scroll

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Model PI-700

NOTE1:

calibrated after any change is made to the sensor range.

NOTE2:

“Set Range”). The display will then switch to “XXX“(where XXX is the current Range). Swipe the magnet momentarily over PGM2 to increase or PGM1 to decrease the range Level until the desired range is displayed. Hold the magnet over PGM1 or PGM2 for 3 seconds to accept the new value. The display will scroll “Range Saved”, and revert to “Set Range” text scroll.

Selectable ranges are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20 – Normal ranges for Low Range Sensors. 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 100, 150, 200, 250, 300, 350, 400, 450, 500, 600, 700, 800, 900, 1000, 2000, 3000, 4000, 5000 – Normal ranges for High Range Sensors.

The PI-700 ITM output range can be changed from the plug-in intelligent PID sensor range, but only within the following limitations: The range can be lowered by a factor of 4, or increased by a factor of 4. It is possible, but not advisable, to take a sensor outside the normal ranges for the sensor. Taking a sensor out of the normal range limits for that sensor may give unreliable, inconsistent results, and should be avoided.

Move to another menu item by executing a momentary hold, or, return to Normal Operation via automatic timeout of about 15 seconds (the display will scroll “Set Range” 4 times and then return to Normal Operation).

The sensor should be re-

AutoSpan and AutoZero should be re-established.

When a new plug-in sensor is installed, the ITM will automatically default to the

range of the plug-in sensor.

3.5.5 Set Gas Factor

All span calibrations are recommended to be done with a calibration standard consisting of Isobutylene in air background. If the target gas is not Isobutylene the correct Gas Factor will need to be set for correct operation. Refer to Table 5 for the correct Gas Factor for the target gas. The current Gas Factor is displayed in the “View Sensor Status” menu.

The menu item appears as: “Set Gas Factor”

From the Set Gas Factor text scroll, hold the magnet over PGM1 or PGM2 until the “◄” prompt appears and continue to hold the magnet in place for an additional 3-4 seconds (until the display starts to scroll “Set Factor”). The display will then switch to “ X.XX“ (where X.XX is the current gas factor). Swipe the magnet momentarily over PGM2 to increase or PGM1 to decrease the gas factor level until the correct value is displayed. Hold the magnet over PGM1 or PGM2 for 3 seconds to accept the new value. The display will scroll “Factor Saved”, and revert to “Set Gas Factor” text scroll.

Move to another menu item by executing a momentary hold, or, return to Normal Operation via automatic timeout of about 15 seconds (the display will scroll “Set Gas Factor” 4 times and then return to Normal Operation.

3.5.6 Set Zero Offset

If it is determined that there is a constant but negligible amount of residual active VOC gases in the background air, the Zero Offset feature can optionally be used to null this reading out.

To set the “Zero Offset” of the sensor, observe the sensor’s concentration reading after a ‘true’ zero air calibration procedure. This reading represents the background ambient VOC contribution to the sensors actual zero set point. Record this reading to set the Zero Offset.

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Model PI-700

NOTE

The menu item appears as: “Set Zero Offset”

From the “Set Zero Offset” text scroll, hold the programming magnet over PGM1 or PGM2 until the “◄” prompt appears and then hold continue to hold the magnet in place for an additional 3-4 seconds (until the display starts to scroll “Set Zero Offset”). The display will then switch to “ X.X“ (where X.X is the current offset). Swipe the magnet momentarily over PGM2 to increase or PGM1 to decrease the number until the desired zero offset is displayed. Hold the magnet over PGM1 or PGM2 for 3-4 seconds to accept the new value. The display will scroll “ID Saved”, and revert to “Set Zero Offset” text scroll.

Move to another menu item by executing a momentary hold, or, return to Normal Operation via automatic timeout of about 15 seconds (the display will scroll “Set Zero Offset” 5 times and then return to Normal Operation).

If performed correctly the sensor should read 0.0 after returning to normal operation.

3.5.7 Signal Output Check

Signal Output Check provides a simulated 4-20mA output and RS-485 Modbus™ output. This simulation

allows the user to conveniently perform a functional system check of their entire safety system. This signal output simulation also aids the user in performing troubleshooting of signal wiring problems.

The menu item appears as: “Signal Output Check”.

From the “Signal Output Check” text scroll, hold the magnet over PGM1 or PGM2 until the “◄” prompt appears and then hold continuously for an additional 10 seconds. Once initiated, the display will scroll “Simulation Active” until the function is stopped. During simulation mode, the 4-20mA value will be increased from 4.0mA to 20.0mA (in 1% of range increments at about a 1 second update rate) and then decreased from 20.0mA to 4.0mA. The same simulation sequence is applied to the Modbus™ output gas reading.

: Signal Output Check stays active indefinitely until the user stops the function. There

is no automatic timeout for this feature.

To end simulation mode, hold magnet over PGM1 or PGM2 for 3 seconds. The display will either move to the prior menu item or move to the next menu item respectively.

Move to another menu item by executing a momentary hold, or, return to Normal Operation via automatic timeout of about 15 seconds.

3.5.8 Restore Factory Defaults

Restore Factory Defaults is used to clear current user configuration and calibration data from memory and

revert to factory default values. This may be required if the settings have been configured improperly and a known reference point needs to be re-established to correct the problem.

This menu item appears as: “Restore Defaults”.

: Restoring factory defaults should only be used when absolutely necessary. All previously existing configuration inputs will have to be re-entered if this function is executed. A full 10-second magnet hold on PGM 2 is required to execute this function.

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Model PI-700

NOTE

From the “Restore Defaults” text scroll, hold the programming magnet over PGM2 until the “◄” prompt appears and continue to hold 10 seconds. The display will scroll “Restoring Defaults”, followed by “New ECS Connected”, and “Range XX” where XX is the default range of the intelligent plug-in sensor.

Move to another menu item by executing a momentary hold, or, return to Normal Operation via automatic timeout of about 15 seconds (the display will scroll “Restore Defaults” 4 times and then return to Normal Operation).

Following the execution of “Restore Defaults”, the PI-700 will revert to its factory default settings. The default settings are:

 Serial ID = 01. The Serial ID must be set appropriately by the operator (Section 3.5.3).

: The following must be performed in order before the sensor can be placed in operation.

 AutoSpan Level = 50% of range. AutoSpan level must be set appropriately by the operator (Section 3.5.2).  Range: Defaults to range of intelligent plug-in sensor, must be set to the appropriate level by the operator

(Section 3.5.4).

 AutoZero: AutoZero settings are lost and user must perform new AutoZero (Section 3.4).  AutoSpan: AutoSpan Settings are lost and user must perform new AutoSpan (Section 3.4).

3.6 Program Features

Detcon PI-700 toxic gas sensors incorporate a comprehensive set of diagnostic features to achieve Fail-Safe Operation. These Operational features and Failsafe Diagnostic features are detailed below.

3.6.1 Operational Features

Over-Range

When gas greater than the full-scale range is detected, the ITM display will continuously flash the full-scale reading. This designates an over-range condition. The 4-20mA signal will report a 22mA output during this time.

In-Calibration Status

When the sensor is engaged in AutoZero or AutoSpan calibrations, the 4-20 mA output signal is taken to 2.0 mA and the in-calibration Modbus™ register bit is set. This alerts the user that the ITM is not in an active measurement mode. This feature also allows the user to log the AutoZero and AutoSpan events via their master control system.

Sensor Life

Sensor Life is calculated after each AutoSpan calibration and is reported as an indicator of remaining service life. It is reported in the “View Sensor Status” menu and as a RS-485 Modbus™ register bit. Sensor Life is reported on a scale of 0-100%. When Sensor Life falls below 25%, the sensor cell should be cleaned or replaced within a reasonable maintenance schedule.

Last AutoSpan Date

This reports the number of days that have elapsed since the last successful AutoSpan. This is reported in the View Sensor Status menu. After 180 days, an AutoSpan Fault will be declared.

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NOTE

3.6.2 Fault Diagnostic/Failsafe Features

Fail-Safe/Fault Supervision

Model PI-700 sensors are designed for Fail-Safe operation. If any of the diagnostic faults listed below are active, the ITM Display will scroll the message “Fault Detected” every 1 minute during normal operation. At any time during “Fault Detected” mode, holding the programming magnet over PGM1 or PGM2 for 1 second will display the active fault(s). All active faults are reported sequentially.

Most fault conditions result in failed operation of the sensor. In these cases the 4-20mA signal is dropped to the universal fault level of 0mA. These include the AutoSpan Calibration faults, Sensor Fault, Processor Fault, Memory Fault, Loop Fault, and Input Voltage Fault. The 0mA fault level is not employed for Temperature or AutoSpan Faults. For every diagnostic fault condition the associated RS-485 Modbus™ fault register will be flagged to alert the user digitally.

: Refer to the Troubleshooting Guide section for guidance on how to address fault conditions.

Range Fault – AutoSpan

If the sensor fails the minimum signal change criteria (Section 3.4.2) during AutoSpan sequence, the “Range Fault” will be declared. A “Range Fault” will cause a “Fault Detected” message to flash intermittently on the ITM display and drop the 4-20mA output to 0mA. The Modbus™ fault register bit for Range Fault will be set and will not clear until the fault condition has been cleared. The sensor should be considered ‘Out-of-Service’ until a successful AutoSpan calibration is performed.

Stability Fault - AutoSpan

If the sensor fails the signal stability criteria (Section 3.4.2) during AutoSpan sequence, the “Stability Fault” will be declared. A “Stability Fault” will cause a “Fault Detected” message to flash intermittently on the ITM display and drop the mA output to 0mA. The Modbus™ fault register bit for Stability Fault will be set and will not clear until the fault condition has been cleared. The sensor should be considered as ‘Out-of-Service’ until a successful AutoSpan calibration is performed.

Clearing Fault - AutoSpan

If the sensor fails the signal stability criteria (Section 3.4.2) during AutoSpan sequence, the “Clearing Fault” will be declared. A “Clearing Fault” will cause a “Fault Detected” message to flash intermittently on the ITM display and drop the mA output to 0mA. The Modbus™ fault register bit for Clearing Fault will be set and will not clear until the fault condition has been cleared. The sensor should be considered as ‘Out-of-Service’ until a successful AutoSpan calibration is performed.

Zero Fault

If the sensor drifts to < -10% of range, an “Under-Range Fault” will be declared. An “Under-Range Fault” will cause a “Fault Detected” message to flash intermittently on the ITM display. The Modbus™ fault register bit for Under-Range Fault will be set and will not clear until the fault condition has been cleared. If an UnderRange Fault occurs, the 4-20mA signal will be set at 0mA until the fault condition is resolved.

Sensor Fault

If the intelligent plug-in sensor is not plugged in, plugged in incorrectly, or there is a communication failure, a “Sensor Fault” is declared. A “Sensor Fault” will cause a “Fault Detected” message to flash intermittently on the ITM display. The Modbus™ fault register bit for Sensor Fault will be set and will not clear until the fault

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Model PI-700

condition has been cleared. If a Sensor Fault occurs, the 4-20mA signal will be set at 0mA until the fault condition is resolved.

Processor Fault

If the detector has any unrecoverable run-time errors, a “Processor Fault” is declared. A “Processor Fault” will cause a “Fault Detected” message to flash intermittently on the ITM display. The Modbus™ fault register bit for Processor Fault will be set and will not clear until the fault condition has been cleared. If a Processor Fault occurs, the 4-20mA signal will be set at 0mA until the fault condition is resolved.

Memory Fault

If the detector has a failure in saving new data to memory, a “Memory Fault” is declared. A “Memory Fault” will cause the “Fault Detected” message to flash intermittently on the ITM display. The Modbus™ fault register bit for Memory Fault will be set and will not clear until the fault condition has been cleared. If a Memory Fault occurs, the 4-20mA signal will be set at 0mA until the fault condition is resolved.

4-20mA Loop Fault

If the sensor detects a condition where the 4-20mA output loop is not functional (high loop resistance or failed circuit function) a “4-20mA Fault” is declared. A “4-20mA Fault” will cause the “Fault Detected” message to scroll once a minute on the ITM display. The Modbus™ fault register bit for Loop Fault will be set and will not clear until the fault condition has been cleared. If a Loop Fault occurs, the 4-20mA signal will be set at 0mA until the fault condition is resolved. If the 4-20mA current loop is still out of tolerance, contact Detcon at [email protected], or contact Detcon customer service.

Input Voltage Fault

If the detector is currently receiving an input voltage that is outside of the 11.5-28VDC range, an “Input Voltage Fault” is declared. An “Input Voltage Fault” will cause the “Fault Detected” message to flash intermittently on the ITM display. The fault register bit for Input Voltage Fault will be set and will not clear until the fault condition has been cleared. If an Input Voltage Fault occurs, the 4-20mA signal will be set at 0mA until the fault condition is resolved.

Temperature Fault

If the detector is currently reporting an ambient temperature that is outside of the –40C° to +75C° range a “Temperature Fault” is declared. A “Temperature Fault” will cause the “Fault Detected” message to flash intermittently on the ITM display. The Modbus™ fault register bit for Temperature Fault will be set and will not clear until the fault condition has been cleared. If a Temperature Fault occurs, the 4-20mA signal remains operational.

AutoSpan Fault

If 180 days has elapsed since the last successful AutoSpan, an AutoSpan Fault will be generated. An “AutoSpan Fault” will cause the “Fault Detected” message to flash intermittently on the ITM display. The Modbus™ fault register bit for AutoSpan Fault will be set and will not clear until the fault condition has been cleared by executing a successful AutoSpan. If an AutoSpan occurs, the 4-20mA signal remains operational.

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Model PI-700

3,2

40003

4,2

4. RS-485 Modbus™ Protocol

Model DM-700 sensors feature Modbus™ compatible communications protocol and are addressable via the program mode. Other protocols are available. Contact the Detcon factory for specific protocol requirements. Communication is two wire, half duplex 485, 9600 baud, 8 data bits, 1 stop bit, no parity, with the sensor set up as a slave device. A master controller up to 4000 feet away can theoretically poll up to 256 different sensors. This number may not be realistic in harsh environments where noise and/or wiring conditions would make it impractical to place so many devices on the same pair of wires. If a multi-point system is being utilized, each sensor should be set for a different address. Typical address settings are: 01, 02, 03, 04, 05, 06, 07, 08, 09, 0A, 0B, 0C, 0D, 0E, 0F, 10, 11…etc.

Sensor RS-485 ID numbers are factory default to 01. These can be changed in the field via the Operator Interface described in Section 3.5.5 Set Serial ID.

The following section explains the details of the Modbus™ protocol that the DM-700 sensor supports.

Code 03 - Read Holding Registers is the only code supported by the transmitter. Each transmitter contains 6 holding registers which reflect its current status.

Table 3 Modbus™ Registers

FC REG Content Description R/W Content Definition

03 40000 Device Type R 8 700 Sensor 030640001

40001

03 40002 Read Concentration

030640003

03 40004 Read Sensor Life R 85 For 85% sensor life 03 40005 Read Fault Status Bits

03 40006 Read Model # R 1, 2, 3, 4, 5 DM, FP, IR, TP, PID

03 40007 Read Days Since Cal R 29 29days 03 40008 4-20 Current Output

03 40009 Read Input Voltage

03 40010 Read Temperature R 28 28 °C

03/0640011 Special #1 R/W Function dependent on value of

Read Detectable

Write Detectable Range

Read AutoSpan Level

Write AutoSpan Level

Range

mA x100

V x100

1,2

R/W 100

R 1000 Bound by range. If > range, this

R/W 50 Span gas at 50 DM – 1% to 95% of Range (40001)

R 0x0001

R 400 4.00mA

R 2400 24.00V

Value Meaning Range

10000

0x0002 0x0004 0x0008 0x0010 0x0020 0x0040 0x0080 0x0100 0x0200 0x0400 0x0800 0x1000 0x2000 0x4000 0x8000

For 0-100 For 0-10000

value is in fault.

Global Fault Auto Span Fault Temperature Fault 4-20mA Fault Input Voltage Fault Memory Fault Processor Fault Clearing Fault Stability Fault Range Fault Sensor Fault Zero Fault Sensor Fault 2 <reserved> In Calibration Communication Error

respectively

40006 (See Special Register

Table 4)

DM – 0 to 10000 FP – Read only TP – 20, 50, 100, 200 IR – 0 to 10000 PI – 0 to 10000

FP – 5% to 95% of Range (40001) TP – 2% to 50% of Range (40001) IR – 5% to 95% of Range (40001) PI – 1% to 95% of Range (40001)

Range

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Model PI-700

(R/W)

FC REG Content Description R/W Content Definition

Value Meaning Range

03/0640012 Special #2 R/W Function dependent on value of

40006 (See Special Register

Table 4)

03 40013 Special #3 R Function dependent on value of

40006 (See Special Register

Table 4)

03/0640014 Special #4 R/W Function defendant on value of

40006 (See Special Register

Table 4)

030640015

40015

Calibration Status

Calibration Enable

RW0x0000

0x0001 0x0002 0x0003 0x0004 0x0001 0x0002 0x0008 0x0009 0x000A 0x000B

Idle Zero Calibration Started Span Calibration Started Span Set Span Calibration Unsuccessful Set Zero Set Span Signal simulation mode Set FP Bridge Voltage Set TP Heater Power Set IR Gain

03 40016 Read Text 1, first char inLR Two Char of Gas/Units String

03 40017 Read Text 2 R Two Char of Gas/Units String 03 40018 Read Text 3 R Two Char of Gas/Units String 03 40019 Read Text 4 R Two Char of Gas/Units String 03 40020 Read Text 5, last char inHR Two Char of Gas/Units String

03 40021 Text null terminator in L R Two Char of Gas/Units String

Integer ranges from 1 all the way to 10,000.

Units are determined by “units” field in the “notation” string

Gas Reading times one (x 1) with units in notation string for “Low Range” = 0. Gas Reading times one (x 10) with units in notation string for “Low

Range” = 1. Gas Reading times one (x 100) with units in notation string for “Low Range” = 2.

Span Gas must be less than or equal to Detectable Range and is usually about ½ of it.

Fault status bits self-reset when fault clears

Text in ASCII, in order L byte, H byte, L byte… See field descriptions of notation string.

Gas/Units String

Character # 1 2 3 4 5 6 7 8 9 10 11

Description Units 0x20 Gas Type 0x00

Units – This field is ‘PPM’, ‘PPB’, or ‘_ _ %’ (where ‘ _ ‘ is a space, 0x20). 0x20 – The units filed is terminated with an ASCII space (0x20)

Gas Type – This field contains the gas type of the cell. Any ASCII string is permissible 0x00 – The notation string is terminated with an ASCII null character

Table 4 Modbus™ Special Registers

REG DM (40006 = 1) FP (40006 = 2) IR(40006 = 3) TP (40006 = 4)

40011 Low Range= 0, 1, 2

0: Range >25 (0 decimal place) 1: Range 10-25 (1 decimal place) 2: Range <10 (2 decimal place)

40012 0x8XXX

0x0XXX 0xX000 0xX096 0xX0C8 0xX12C

Positive Polarity Cell Negative Polarity Cell Bias = 0mV Bias = 150mV Bias = 200mV Bias = 300mV

40013 Gain Code

(integer between 0 & 15)

40014 Raw Counts 0-0xFFFF

Only possible ranges are 20, 50, 100, 200. Modbus register 40001 will contain either 20, 50, 100, or 200, range divisor is not necessary.

(0x8000 = nominal 0)

Gas Factor

Range = 79 to 565

Cal Factor

Range = 79 to 565

Gas Factor

Range = 20 to 565

Heater Power (mW) (R/W)

Active Counts Heater Voltage

(mV)

Bridge Current (mA) Reference Counts Sensor Resistance

(x100 Ω)

Bridge Voltage (mV)

(Read only)

Range Divisor 1,10,100, or 1000

Heater Current (mA )

Low Range= 0, 1, 2 0: Range >25 1: Range 10-25 2: Range <10 0x8XXX 0x0XXX 0xX000 0xX096 0xX0C8 0xX12C

Gain Code

Raw Counts

PI (40006 = 5)

Positive Polarity Cell Negative Polarity Cell Bias = 0mV Bias = 150mV Bias = 200mV Bias = 300mV

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Model PI-700

5. Service and Maintenance

Calibration Frequency

In most applications, quarterly span calibration intervals will assure reliable detection. However, industrial environments differ. Upon initial installation and commissioning, close frequency tests should be performed, weekly to monthly. Test results should be recorded and reviewed to determine a suitable calibration interval. If, after 180 days, an Auto-Span Calibration is not performed, the ITM will generate an AutoSpan Fault.

5.1 PID Plug-In Sensor Maintenance

The plug-in PID Sensor will need to be properly maintained to achieve proper long-term performance. All PID sensors use a UV lamp that has a finite lifetime. The Detcon PID UV lamp source is expected to last at least 1 year. However, from the time of installation a gradual loss in UV lamp strength is expected (Figure

13). As the UV lamp strength decreases the sensor signal will decrease accordingly. This dictates that periodic span calibrations are required to maintain calibration accuracy. To determine the present signal strength of the PID sensor execute a valid span calibration and view the Sensor Life from the ‘View Program Status’ menu. Any Sensor Life value less than 30% should result in the user’s choice of replacing the plug-in sensor, cleaning the UV Lamp, or replacing the UV Lamp.

Figure 13 UV Lamp Aging Expectation

If the PID sensor appears to be losing signal strength at a rate faster than the estimates shown in Figure 13, the sensor is most likely experiencing contamination film build-up on the UV optical filter. This will happen when exposed to certain gases or ambient contaminations that collect on the surface of the UV filter. The result is a decrease in the amount of emitted UV light from the lamp source. This is known to happen with gases that can be polymerized by UV light (such as heavy complex VOC’s), airborne oil vapors, and very fine dust. As UV Filter contamination occurs, the sensor’s signal strength falls off in addition to the expected loss rate shown in Figure 13. This phenomenon can be reversed by disassembling the sensor and carefully cleaning the UV lamp filter using a specialized cloth.

A secondary filter accessory, built into the splashguard adapter, is used with the Model 700 PID sensors (Figure 14). This multi-stage filter is designed to prevent heavy and complex airborne VOC molecules from contacting the PID sensor and causing surface contamination and subsequent reading drift. When used effectively, it may extend the time between required sensor cleaning and / or sensor replacement. Its use is limited to application cases where the target gas(s) are moderate to small VOC molecules (i.e. benzene and smaller molecular weights). Before installing, it must be verified that the filter does not inhibit response to the target gas being monitored. Do not use this filter if the target gas response is inhibited. The service life of the

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Model PI-700

filter may vary depending on the application; however, it is advised to change it out at least on a 18-24 month cycle. In addition, a small moisture control packet (P/N 960-700PID-000) Figure 15 is banded around the plug-in PID sensor. This helps the sensor maintain better zero stability in extremely high humidity conditions. It is only to be used in conjunction with the secondary filter discussed previously. This moisture control packet should be replaced on an 18-24 month cycle.

Figure 14 Splashguard Adapter with Integral Filter

DetconP/N 960-700PID-000

Avoidcontactwith crystals

Figure 15 Plug-in sensor with Moisture control packet

It is also possible, under certain ambient contamination conditions, that the sensor’s Detector Cell may have a partially conductive film that forms across the contact grids. This condition causes the zero background signal to gradually increase to the point where it becomes unacceptable for the range of signal input to the transmitter electronics. When this occurs the detector cell should be replaced. This can be checked by examining the amount of raw signal that is produced during exposure to zero gas. Refer to the ‘View Program Status’ menu and record the Raw Signal report after 5 minutes of zero gas exposure. A value that exceeds 3000 counts would be evidence of this problem.

General recommendations for Sensor Maintenance

 For normal environmental exposure and signal decay, replace the plug-in sensor every 9-12 months.

(especially if there are no skilled technicians to handle proper UV lamp replacement.)

 If skilled technicians are available, replace just the UV lamp every 9-12 months.  For abnormally high rates of signal decay, clean the UV lamp monthly, using a Lamp Cleaning Kit, and

replace the UV lamp every 9-12 months.

 For any proven cases where the zero baseline has drifted up, replace the detector cell.

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Page 35

All piD Sensor Cells contain six user replaceable components:

NOTE

Filter Cap Spacer

Filter Media #1 Filter Media #2

Cell Assembly 10.6eV Lamp

Model PI-700

Figure 16 Sensor Cell Parts

: Avoid touching lamp’s window as well as any metal portion of the Detector Cell

with bare fingers. It is acceptable to hold the lamp by its glass body or by the edges of the window. Fingerprints left on those parts may adversely affect the sensor’s operation. Use of cotton or latex gloves is suggested.

Disassembly

1. Power down the instrument and remove the sensor cell.

2. Remove the filtercap by applying a slight upward pressure with the tip of a screwdriver or an Exacto Blade just below the hole in the cap and between the cap and the housing.

Figure 17 Removal of Filter Cap

3. With a fine tipped tweezers, remove both the Filter Media and set aside.

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Figure 18 Removal of Filter Media

4. Using the Exacto Blade, remove the spacer and set it aside.

Model PI-700

Figure 19 Removal of Spacer

5. With fine tipped tweezers, carefully remove the cell assembly by prying under the cell’s edge where the connector pins are located.

Figure 20 Removal of Cell Assembly

6. With fine tipped tweezers, grasp the lamp by placing the tips in the housing notch and gently pulling it out. Be careful not to scratch the lamp lens or chip the edges.

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Cleaning the Lamp

Model PI-700

Figure 21 Removal of Lamp

Figure 22 Lamp cleaning

Wearing gloves grab the lamp by the cylindrical glass body and clean the window by rubbing it against the Polishing Pad. Use a circular motion and try to keep the window surface flat relative to the pad. Five seconds of rubbing should be enough in most cases. Another indication of cleaning completeness is that about 1/16thof the pad surface is used during the process.

Figure 23 Polishing the Lamp

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Model PI-700

Reassembly

1. Install the lamp into the sensor, making sure that the lamp’s metalized pads are aligned with the corresponding excitation springs inside the lamp cavity

Figure 24 Lamp installation

2. With the end of the clean tweezers, or a clean blade of a screwdriver, press down firmly, being careful not to scratch the surface of the lamp.

Figure 25 Lamp seating

3. Using fine tipped tweezers, install the cell assembly. Align the pins with the corresponding sockets on the sensor and push down on the end with the pins. Make sure the cell assembly is flush with the lamp window.

Figure 26 Cell Assembly installation

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Model PI-700

4. Place the spacer around the assembly.

Figure 27 Spacer installation

5. Place the filter media over the Cell Assembly centered on the top of the sensor. Make sure the filters are installed in the correct order. Filter Media #2 first, then Filter Media #1 on top, with the shiny side up.

Figure 28 Installing Filter Media

6. Align the Cap Key with the notch on the housing. Starting at the side opposite the notch, press down until the Filter Cap snaps on to the housing. If the Cap Key is incorrectly aligned there will be a noticeable bulge on the side of the cap.

Figure 29 Replacing the Cap

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Model PI-700

NOTE

Visual Inspection

The Sensor should be inspected annually. Inspect for signs of corrosion, pitting, and water damage. During visual inspection, the Splash Guard should be inspected to insure that it is not blocked. Examine the plug-in sensor for signs of physical blockage, electrolyte leakage, or severe corrosion. Also, inspect inside the Junction Box for signs of water accumulation or Terminal Block corrosion.

Condensation Prevention Packet

A moisture condensation packet should be installed in every explosion proof Junction Box. The moisture condensation 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 critical function and should be replaced annually. Detcon’s PN is 960-202200-000.

Lens and LCD Display

detcon inc.

MODEL

PI-700

Interconnect Wiring

Intelligent ransmitter Module (ITM) Microprocessor controlled circuit encapsulated in an explosion proof housing

Splash Guard

Splashguard

Adapter

O-Rings

Plug-In replaceable Sensor Cell

Housing Bottom Locking Set-Screw

PI-700

VOC

detcon inc.

MODEL

Magnetic Programming Switches

Figure 30 Sensor Assembly

5.2 Replacement of Intelligent Plug-in Sensor

: It is not necessary to remove power while changing the Intelligent plug-in VOC gas

sensor in order to maintain area classification, since it is intrinsically safe.

a) Use a 1/16” Allen wrench to release the locking setscrew that locks the ITM and Splash Guard Adapter together (One turn will suffice - Do not remove setscrew completely).

b) Remove splashguard. Unthread and remove the Splash Guard Adapter from the ITM.

c) Gently pull the plug-in sensor out of the ITM. Remove moisture control packet if supplied. Transfer to new plug-in sensor. Orient the new plug-in sensor so that it matches with the female connector pins. When properly aligned, press the sensor in firmly to make the proper connection.

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Model PI-700

NOTE

Locking Setscrew

Display Window

ITM

Bottom View

Plug-in Sensor

(Bottom View)

Figure 31 Sensor Cell and ITM Mating

d) Thread the Splash Guard Adapter onto the ITM to a snug fit and tighten the locking setscrew using the 1/16” Allen wrench. Reinstall the splashguard.

e) Verify the gas type and range of the new sensor by checking in View Program Status. It is recommended “AutoZero and AutoSpan functions be performed, as per Section 3.4 Calibration Mode, to match the new intelligent plug-in sensor with the ITM.

5.3 Replacement of ITM

a) Remove the power source from the sensor assembly. Disconnect all sensor wire connections at the J-Box taking note of the wire connections.

: It is necessary to remove power to the J-Box while changing the ITM in order to

maintain area classification.

b) Use a wrench and the wrench flats provided at the top section of the ITM and unthread the ITM until it can be removed.

c) Use a 1/16” Allen wrench to release the locking setscrew that locks the ITM and Splash Guard Adapter together (One turn will suffice - Do not remove setscrew completely).

d) Remove splashguard. Unthread and remove the Splash Guard Adapter from the ITM.

e) Gently remove the plug-in gas sensor from the old ITM and install it in the new ITM. Orient the plug-in sensor pins so that they match with the female connector sockets on the new ITM then press the sensor in firmly to make proper connection.

f) Thread the Splash Guard Adapter onto the ITM until snug, tighten the locking setscrew and reconnect splashguard.

g) Feed the sensor assembly wires through the ¾” female NPT mounting hole and thread the assembly into the J-box until tight and the ITM lens faces toward the front access point. Connect the sensor assembly wires inside J-Box (Refer to Section 2.6, and Figure 9).

h) Perform Set AutoSpan Level, Set Serial ID, Set Range, and then perform a successful AutoZero and AutoSpan before placing sensor into service.

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Model PI-700

NOTE

5.4 Replacement of PI-700 Sensor Assembly

a) Remove the power source from the sensor assembly. Disconnect all sensor wire connections at the J-Box.

: It is necessary to remove power to the J-Box while changing the PI-700 sensor in order

to maintain area classification.

b) Use a wrench and the wrench flats provided at the top section of the ITM and unthread the ITM until it can be removed.

c) Use a 1/16” Allen wrench to release the locking setscrew that locks the ITM and Splash Guard Adapter together (One turn will suffice - Do not remove setscrew completely).

d) Remove splashguard. Unthread and remove the Splash Guard Adapter from the ITM.

e) Feed the new PI-700 sensor assembly wires through the ¾” female NPT mounting hole and thread the assembly into the J-box until tight and the ITM lens faces toward the front access point. Connect the sensor assembly wires inside J-Box (Refer to Section 2.6, and Figure 9).

f) PI-700 sensors are factory calibrated, however, they require an initial AutoZero and AutoSpan calibration (Section 3.4), and must be configured per customer specific application requirements.

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Model PI-700

6. Troubleshooting Guide

Refer to the list of Failsafe Diagnostic features listed in Section 3.6.2 for additional reference in troubleshooting activities. Listed below are some typical trouble conditions and their probable cause and resolution path.

Locking Setscrew

Display Window

ITM

Bottom View

Plug-in Sensor

(Bottom View)

Figure 32 Sensor Cell and ITM Mating

Under-Range Fault

Probable Cause: Sensor Baseline drifted lower, Ambient Interference gasses reduced.

 Repeat AutoZero. Use Zero Air or N2source.  Execute successful AutoSpan and verify adequate Sensor Life.  Check Raw counts in View Sensor Status. Count should be close to 1,500 for high range and 3,000

for low range.

 Replace plug-in sensor if fault continues.

Missing Sensor Fault

Probable Cause: Sensor is Missing, Failed Plug-in Sensor Electronics, or ITM I.S. Barrier Failure.

 Make sure plug-in sensor is plugged in properly with correct orientation.  Swap plug-in sensor into another ITM to determine if plug-in sensor problem or ITM problem.  Replace the plug-in sensor if proven faulty.  Replace the ITM if proven faulty.

AutoSpan Calibration Faults – (Range, Stability and Clearing)

To clear any AutoSpan Calibration fault, the AutoSpan process must be completed successfully (Section 3.4). Use zero air gas after AutoSpan Calibration to avoid clearing fault from high background VOC levels.

Range Fault

Probable Causes: Failed Sensor, Cal Gas not applied or not applied at appropriate time, or problems w/ cal gas and delivery.

 Check validity of span gas (check MFG date on cal gas cylinder).  Use proper cal gas regulators and tubing for highly absorbing or corrosive gasses.  If using Splashguard with Integral Cal Port, must use Calibration Wind Guard or air movement can

compromise span gas delivery.

 Check for obstructions affecting cal gas hitting sensor face (including being wet, blocked, or

corroded).

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Model PI-700

 Verify adequate Sensor Life.  Clean or replace the PID lamp.  Replace the plug-in VOC sensor.

Stability Fault

Probable Causes: Failed Sensor, empty or close to empty Cal Gas Cylinder, or problems with cal gas and delivery.

 Check validity of span gas using pull tube or other means (check MFG date on cal gas cylinder).  Use proper cal gas regulators and tubing for highly corrosive gasses.  If using Splashguard with Integral Cal Port, must use Calibration Wind Guard or air movement can

compromise span gas delivery.

 Check for obstructions affecting cal gas hitting sensor face (including being wet, blocked, or

corroded).

 Verify adequate Sensor Life.  Clean or replace the PID lamp.  Replace the plug-in VOC sensor.

Clearing Fault

Probable Causes: Failed Sensor, Cal Gas not removed at appropriate time, problems with cal gas and delivery, or background of Target Gas.

 Must recover to < 5% of range in < 5 min after AutoSpan is complete.  Use bottled air (zero air or N2) if there is a known continuous background level.  Check validity of span gas using pull tube or other means (check MFG date on cal gas cylinder).  Use proper cal gas regulators and tubing for highly corrosive gasses.  Check for obstructions affecting cal gas hitting sensor face (including being wet, blocked, or

corroded).

 Verify adequate Sensor Life.  Clean or replace the PID lamp.  Replace the plug-in VOC sensor.

Poor Calibration Repeatability

Probable Causes: Failed Sensor, use of wrong Cal Gas or problems with cal gas and delivery, or Interference Gasses.

 Check for adequate Sensor Life.  Check validity of span gas using pull tube or other means (check MFG date on cal gas cylinder).  Use proper cal gas regulators and tubing for highly corrosive gasses.  Check for obstructions affecting cal gas hitting sensor face (including being wet, blocked, or

corroded).

 Verify adequate Sensor Life.  Clean or replace the PID lamp.  Replace the plug-in VOC sensor.

Unstable Output/ Sudden spiking

Possible Causes: Unstable power supply, inadequate grounding, or inadequate RFI protection.

 Verify Power source is stable.

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Model PI-700

 Verify field wiring is properly shielded and grounded.  Contact Detcon to optimize shielding and grounding.

Nuisance Alarms

 Check condulet for accumulated water and abnormal corrosion on terminal blocks.  If nuisance alarms are happening at night suspect condensation in condulet.  Add or replace Detcon’s Condensation Prevention Packet P/N 960-202200-000.  Investigate the presence of other target gasses that are causing cross-interference signals.  Determine if cause is RFI induced.

Processor and/or Memory Faults

 Recycle power in attempt to clear problem  Restore Factory Defaults - This will clear the processor’s memory and may correct problem.  Remember to re-enter all customer settings for range and cal gas level after Restore Factory Defaults.  If problem persists, replace the Intelligent Transmitter Module.

Unreadable Display

If due to excessive sunlight, install a sunshade to reduce glare.

Nothing Displayed – Transmitter not Responding

 Verify condulet has no accumulated water or abnormal corrosion.  Verify required DC power is applied to correct terminals.  Swap with a known-good ITM to determine if ITM is faulty.

Faulty 4-20 mA Output

If Sensor has a normal reading with no Faults displayed, and the 4-20 mA signal output is 0mA….

 Check that wiring is properly connected at terminal blocks and through to controller inputs.  The 4-20 output loop must be closed (resistance of < 1000 ohms) to avoid the Loop Fault.  Perform a “Signal Output Check” sequence via Section 3.5.7 and verify 4-20mA output with Current

Meter.

 Swap with new ITM to determine if the ITM’s 4-20mA output circuit has failed.  If the 4-20mA current loop is still out of tolerance, contact Detcon at [email protected], or contact

Detcon customer service.

No Communication - RS-485 Modbus™

If sensor has a normal reading with no Faults displayed and the Modbus™ is not communicating….

 Verify that the correct (and non-duplicated) serial address is entered (per Section 3.5.3).  Check that the wiring is properly connected at terminal blocks, and the serial loop is wired correctly.  Perform a “Signal Output Check” per Section 3.5.7 and troubleshoot wiring.  Consider adding a Modbus™ repeater if the distance from the nearest distribution drop is excessive.  Swap with new ITM to determine if the ITM’s serial output circuit is faulty.  Refer to Detcon’s “Guide to Proper Modbus™ Communications” Application Note.

PI-700 Instruction Manual Rev. 2.5 Page 41 of 54

Page 46

Model PI-700

7. Customer Support and Service Policy

Detcon Headquarters 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, or 281.367.4100 Fax: 281.292.2860

• www.detcon.com

• [email protected]

All Technical Service and Repair activities should be handled by the Detcon Service Department via phone, fax, or email at contact information given above. RMA numbers should be obtained from the Detcon Service Department prior to equipment being returned. For on-line technical service, customers should have ready the model number, part number, and serial number of product(s) in question.

All Sales activities (including spare parts purchase) should be handled by the Detcon Sales Department via phone, fax or email at contact information given above.

Warranty Notice

Detcon Inc. warrants the Model PI-700 VOC gas sensors to be free from defects in workmanship and material under normal use and service for two years from the date of shipment on the ITM electronics, and for the conditional warranty period of twelve months on the intelligent plug-in sensor.

Detcon Inc. will repair 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 made by Detcon Inc. personnel.

Defective or damaged equipment must be shipped to the Detcon Inc. factory or representative from which the original shipment was made. In all cases, this warranty is limited to the cost of the equipment supplied by Detcon Inc. The customer will assume all liability for the misuse of this equipment by its employees or other contracted personnel.

All warranties are contingent upon the proper use in the application for which the product was intended and does not cover products which have been modified or repaired without Detcon Inc. approval, or which have been subjected to neglect, accident, improper installation or application, or on which the original identification marks have been removed or altered.

Except for the express warranty stated above, Detcon Inc. disclaims all warranties with regard to the products sold. Including all implied warranties of merchantability and fitness and the express warranties stated herein are in lieu of all obligations or liabilities on the part of Detcon Inc. for damages including, but not limited to, consequential damages arising out of, or in connection with, the performance of the product.

PI-700 Instruction Manual Rev. 2.5 Page 42 of 54

Page 47

Model PI-700

NOTE

8. PI-700 Sensor Warranty

Intelligent Plug-in Sensor Warranty

Detcon Inc. warrants, under normal intended use, each new intelligent plug-in sensor for a period of twelve months and under the conditions described as follows: The warranty period begins on the date of shipment to the original purchaser. The sensor element is warranted to be free of defects in material and workmanship. Should any sensor fail to perform in accordance with published specifications within the warranty period, return the defective part to Detcon, Inc., 4055 Technology Forest Blvd., The Woodlands, Texas 77381, for necessary repairs or replacement.

: The warranty only covers parts not working. This warranty does not cover conditions where the

detector cell or lamp may be dirty and can be restored by cleaning.

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 within 30 days of invoice. * Detcon, Inc. reserves the right to refund the original purchase price in lieu of sensor replacement.

ITM Electronics Warranty

Detcon Inc. warrants, under intended normal use, each new Model 700 ITM to be free from defects in material and workmanship for a period of two years from the date of shipment to the original purchaser. All warranties and service policies are FOB the Detcon facility located in The Woodlands, Texas.

Terms & Conditions * The original serial number must be legible on each ITM. * Shipping point is FOB the Detcon factory. * Net payment is due within 30 days of invoice. * Detcon, Inc. reserves the right to refund the original purchase price in lieu of ITM replacement.

PI-700 Instruction Manual Rev. 2.5 Page 43 of 54

Page 48

Model PI-700

9. Appendix

9.1 Specifications

System Specifications

Sensor Type: Continuous diffusion/adsorption type

Photo Ionization Detector - PID Plug-in Replaceable Intelligent Type (with replaceable Lamp)

Sensor Life: 2 years typical

Measuring Ranges: Gas Dependent, ranges as low as 0-10ppm or as high as 0-5,000ppm

(Consult Detcon) Special Low Range 0-500ppb

Accuracy/ Repeatability: ±10% of reading of full-range or ±2% of range (greater of)

Response Time: T50 <30 seconds; T90 < 60 seconds

Outputs: Linear 4-20mA DC

RS-485 Modbus™ RTU

Electrical Classification: Explosion Proof

CSA and US (NRTL)

Class I, Division 1, Groups B, C, D (Tamb=-40° to 75°C) Class I, Zone I, Group IIB+H2

ATEX

EEx d IIB+H2T4 (Tamb=-40° tp 75°C)

Ingress Protection: NEMA 4X, IP66

Safety Approvals: cCSAus Performance to ISA 12.13.01-2000 and CSA 22.2 #152

ATEX CE Marking

Warranty: Plug-in detector – 1 year

Transmitter – 2 years

Environmental Specifications

Operating Temperature: -4°F to +122°F; -20°C to +50°C

(Special -40°C version available) Storage Temperature: --4°F to +122°F; -20°C to +50°C Operating Humidity: 0-100% RH Non-Condensing

Mechanical Specifications

Dimensions 7"H x 2.2" Dia.; 178mmH x 65mm Dia. (sensor assembly only)

11"H x 6.1"W x 3.75"D; 280mmH x 155mmW x 96mmD (with junction box)

Mounting holes (J-box) 5.5"; 140mm center to center

PI-700 Instruction Manual Rev. 2.5 Page 44 of 54

Page 49

Model PI-700

Weight: 2 lbs; 0.907kg (sensor only)

6 lbs; 2.72kg (w/aluminum j-box) 9 lbs; 4.08kg (w/stainless steel j-box)

Electrical Specifications

Input Voltage: 11-30 VDC

Power Consumption: Normal operation = 68mA (<1.7 watt)

Maximum = 85mA (2 watts)

Inrush current: 1.67A @ 24V

RFI/EMI Protection: Complies with EN61000

Analog Output: Linear 4-20mA DC current (1000 ohms maximum loop load @ 24VDC)

0mA All Fault Diagnostics 2mA In-Calibration 4-20mA 0-100% full-scale 22mA Over-range condition

Serial Output: RS-485 Modbus™ RTU

Baud Rate: 9600 BPS (9600,N,8,1 Half Duplex)

Status Indicators: 4-digit LED Display with gas concentration

full-script menu prompts for AutoSpan, Set-up Options, and Fault Reporting

Faults Monitored: Loop, Input Voltage,

Zero, Missing Sensor, Processor, Memory, Calibration

Cable Requirements: Power/Analog: 3-wire shielded cable

Maximum distance is 13,300 feet with 14 AWG

Serial Output: 2-wire twisted-pair shielded cable specified for RS-485 use

Maximum distance is 4,000 feet to last sensor

I/O Protection: Over-Voltage, Miss-wiring, EMI/RFI Immunity

PI-700 Instruction Manual Rev. 2.5 Page 45 of 54

Page 50

Model PI-700

9.2 Gas Reference Table

Table 5 Gas Factor Table

Compound Name Synonym/Abbreviation Formula

Response

Factor

Acetaldehyde C2H4O 5.5 + 10.23 C25

Acetic Acid Ethanoic Acid C2H4O2 22 + 10.66 10

Acetic Anhydride Ethanoic Acid Anhydride C4H6O3 6.1 + 10.14 5

Acetone 2-Propanone C3H6O 1.1 + 9.71 500

Acetonitrile Methyl cyanide, Cyanomethane C2H3N NR 12.19 40

Acetylene Ethyne C2H2 NR 11.40 ne

Acrolein Propenal C3H4O 3.9 + 10.10 0.1 Acrylic Acid Propenoic Acid C3H4O2 12 + 10.60 2 Acrylonitrile Propenenitrile C3H3N NR + 10.91 2 Allyl alcohol C3H6O 2.4 + 9.67 2

Allyl chloride 3-Chloropropene C3H5Cl 4.3 9.9 1

Ammonia H3N 9.7 + 10.16 25

Amyl alcohol

mix of n-pentyl acetate &

2-Methylbutyl acetate

C5H12O 5 10.00 100

Aniline Aminobenzene C7H7N 0.5 + 7.72 2 Anisole Methoxybenzene C7H8O 0.8 8.21 ne

Arsine Arsenic trihydride AsH3 1.9 + 9.89 0.05

Benzaldehyde C7H6O ? 9.49 ne

Benzene C6H6 0.5 + 9.25 0.5

Benzonitrile Cyanobenzene C7H5N 1.6 9.62 ne

a-Hydroxytoluene,

Benzyl alcohol

Hydroxymethylbenzene,

C7H8O 1.1 + 8.26 ne

Benzenemethanol

Benzyl chloride

a-Chlorotoluene,

Chloromethylbenzene

C7H7Cl 0.6 + 9.14 1

Benzyl formate Formic acid benzyl ester C8H8O2 0.73 + ne

Boron trifluoride BF3 NR 15.5 C1

Bromine Br3 1.30 + 10.51 0.1

Bromobenzene C6H5Br 0.6 8.98 ne

2-Bromoethyl methyl ether C3H7OBr 0.84 + ~10 ne

Bromoform Tribromomethane CHBr3 2.5 + 10.48 0.5

Bromopropane, 1- n-Propyl bromide C3H7Br 1.5 + 10.18 ne

Butadiene 1,2-Butadiene, Vinyl ethylene C4H6 0.85 + 9.07 2

Butadiene diepoxide, 1, 3- 1,2,3,4-Diepoxybutane C4H6O2 3.5 + ~10 ne

Butane C4H10 67 10.53 ne

Butanol, 1- Butyl alcohol, n-Butanol C4H10O 4.7 + 9.99 C50

Butanol, t- tert-butanol, t-Buty alcohol C4H10O 2.9 + 9.90 100 Butene, 1- 1-Butylene C4H8 0.9 9.58 ne

Butoxyethanol, 2-

Butyl Cellosolve,

Ethyleneglycol monobutyl ether

C6H14O2 1.2 + <10 25

Butyl acetate, n- C6H12O2 2.6 + 10 150

Butyl acrylate, n-

Butyl 2-propenoate,

Acrylic acid butyl ester

C7H12O2 1.6 + 10

Butylamine, n- C4H11N 1.1 + 8.71 C5

Butyl cellosolve see 2-Butoxyethanol

Butyl hydroperoxide, t- C4H10O2 1.6 + <10 1

Butyl mercaptan 1-Butanethiol C4H10S 0.52 + 9.14 0.5

Confirmed

Value

IP (eV) TWA

NR = not recommended (does not register) ? = measurable but no data exist Confirmed Value = “+” means actual gas has been used to verify RF, “blank” means it is an empirical estimate IP = is the gases ionization potential (only gases < 10.6eV will respond to sensor) TWA/Time Weighted Average = generally accepted limit for safe 8 hour exposure (in ppm)

ne = None Established

PI-700 Instruction Manual Rev. 2.5 Page 46 of 54

Page 51

Model PI-700

Compound Name Synonym/Abbreviation Formula

Carbon disulfide CS2 1.2 + 10.07 10

Carbon monoxide CO NR + 14.07 50

Carbon tetrachloride Tetrachloromethane CCl4 NR + 11.47 5

Carbonyl sulfide Carbon Oxysulfide COS NR 11.18

Cellosolve

(see 2-Ethoxyethanol)

CFC-14

(see Tetrafluoromethane)

CFC-113

(see 1,1,2-Trichloro-1,2,2-

trifluoroethane)

Chlorine Cl2 NR 11.48 0.5

Chlorine dioxide ClO2 NR + 10.57 0.1

Chloro-1,3-butadiene, 2- Chloroprene C4H5Cl 3 10

Chlorobenzene Monochlorobenzene C6H5Cl 0.40 + 9.06 10

Chloro-1, 1-difluoroethane,

1-(R-142B)

Chlorodifluoromethane HCFC-22, R-22 CHClF2 NR 12.2 1000

Chloroethane Ethyl chloride C2H5Cl NR + 10.97 100

Chloroethanol Ethylene chlorhydrin C2H5ClO 10.52 C1

Chloroethyl ether, 2- bis(2-chloroethyle) ether C4H8Cl2O 3.0 + 5

Chloroethyl methyl ether,2- Methyl 2-chloroethyl ether C3H7ClO 3 ne

Chloroform Trichloromethane CHCl3 NR + 11.37 10

Chloropicrin CCl3NO2 ~400 + ? 0.1 Chlorotoluene, o- o-Chloromethylbenzene C7H7Cl 0.5 8.83 50 Chlorotoluene, p- p-Chloromethylbenzene C7H7Cl 0.5 8.69 ne

Crotonaldehyde trans-2-Butenal C4H6O 1.1 + 9.73 2

Cumene Isopropylbenzene C9H12 0.54 + 8.73 50 Cyanogen bromide CNBr NR 11.84 ne Cyanogen chloride CNCl NR 12.34 C0.3

Cyclohexane C6H12 1.4 + 9.86 300

Cyclohexanol Cyclohexyl alcohol C6H12O ? 9.75 50

Cyclohexanone C6H10O 0.9 + 9.14 25

Cyclohexene C6H10 0.8 + 8.95 300

Cyclohexylamine C6H13N 1.2 8.62 10

Cyclopentane C5H10 ? 10.51 600

Decane C10H22 1.4 + 9.65 ne

Diacetone alcohol 4-Methyl-4-hydroxy-2- pentanone C6H12O2 0.7 50

Dibromoethane,1,2-

Dichlorobenzene, o 1,2-Dichlorobenzene C6H4Cl2 0.47 + 9.08

Dichlorodifluoromethane CFC-12 CCl2F2 NR + 11.75 1000

Dichloroethane, 1,2Dichloroethene, 1,1- 1,1-DCE, Vinylidene chloride C2H2Cl2 0.9 9.79 5

Dichloroethene, c-1,2- c-1,2-DCE, cis-Dichloroethylene C2H2Cl2 0.8 9.66 200 Dichloroethene, t-1,2-

Dichloro-1-fluoroethane, 1,1- R-141B C2H3Cl2F NR + ne

Dichloromethane

(see Methylene chloride)

Dichloropentafluoropropane

Dichloropropane, 1,2 C3H6Cl2 NR 10.87 75

PI-700 Instruction Manual Rev. 2.5 Page 47 of 54

EDB, Ethylene dibromide,

Ethylene bromide

EDC, 1,2-DCA, Ethylene

dichloride

t-1,2-DCE, transDichloroethylene

AK-255, mix of ~45% 3,3-

dichloro-1,1,1,2,2-pentafluoro-

propane (HCFC-225ca) & ~55%

1,3-Dichloro-1,1,2,2,3-

pentafluoropropane

(HCFC-225cb)

C2H3ClF2 NR 12.0

C2H4Br2 1.7 + 10.37 ne

C2H4Cl2 NR + 11.04 10

C2H2Cl2 0.45 + 9.65 200

C3HCl2F5 NR + ne

Response

Factor

Confirmed

Value

IP (eV) TWA

Page 52

Model PI-700

Compound Name Synonym/Abbreviation Formula

Dichloro-1-propene, 1,3- C3H4C12 0.96 + <10 1 Dichloro-1-propene, 2,3- C3H4Cl2 1.3 + <10 ne Dichloro-1,1,1-trifluoro-

ethane, 2,2-

Dichlorvos

Dicyclopentadiene DCPD, Cyclopentadiene dimer C10H12 0.5 + 8.8 5

Diesel Fuel #1 m.w. 226 0.9 + Diesel Fuel #2 m.w. 216 0.7 +

Diethylamine C4H11N 1 + 8.01 5

Diethylaminopropylamine, 3- C7H18N2 1.3

Diethylmaleate C8H12O4 4 ne Diethyl sulfide see Ethyl sulfide

Diisopropylamine C6H15N 0.74 + 7.73 5

Diketene Ketene dimer C4H4O2 2.0 + 9.6 0.5

Dimethylacetamide, N,N- DMA C4H9NO 0.8 + 8.81 10

Dimethylamine C2H7N 1.5 8.23 5

Dimethyl carbonate Carbonic acid dimethyl ester C3H6O3 ~70 + ~10.5 ne

Dimethyl disulfide DMDS C2H6S2 0.20 + 7.4 ne

Dimethylethylamine DMEA C4H11N 1.0 + 7.74 ~3

Dimethylformamide, N,N- DMF C3H7NO 0.8 9.13 10

Dimethylhydrazine, 1,1- UDMH C2H8N2 0.8 + 7.28 0.01

Dimethyl methylphosphonate

Dimethyl sulfate C2H6O4S ~20 + 0.1

Dimethyl sulfide see Methyl sulfide

Dimethyl sulfoxide DMSO, Methyl sulfoxide C2H6OS 1.4 + 9.10 ne

Dioxane, 1,4- C4H8O2 1.3 9.19 25

Dowtherm A see Therminol

DS-108F Wipe Solvent

Epichlorohydrin

Ethane C2H6 NR + 11.52 ne

Ethanol Ethyl alcohol C2H6O 12 + 10.47 1000

Ethanolamine

(not recommended)

Ethene Ethylene C2H4 10 + 10.51 ne

Ethoxyethanol, 2-

Ethyl acetate C4H8O2 4.6 + 10.01 400

Ethyl acrylate C5H8O2 2.4 + (<10.3) 5

Ethylamine C2H7N 0.8 8.86 5

Ethylbenzene C8H10 0.52 + 8.77 100

Ethylene glycol 1,2-Ethanediol C2H6O2 16 + 10.16 C100

Ethylene oxide Oxirane, Epoxyethane C2H4O 13 + 10.57 1

Ethyl ether Diethyl ether C4H10O 1.1 + 9.51 400

Ethyl 3-ethoxypropionate EEP C7H14O3 0.75 + ne

Ethyl formate C3H6O2 ? 10.61 100

Ethyl hexyl acrylate, 2- Acrylic acid 2-ethylhexyl ester C11H20O2 1.1 + ne

Ethyl (S)-(-)-lactate see also

DS-108F

Ethyl mercaptan Ethanethiol C2H6S 0.56 + 9.29 0.5

Ethyl sulfide Diethyl sulfide C4H10S 0.5 + 8.43 ne

Formaldehyde Formalin CH2O ? 10.87 C0.3

Formic acid CH2O2 NR + 11.33 5

Furfural 2-Furaldehyde C5H4O2 0.92 + 9.21 2

PI-700 Instruction Manual Rev. 2.5 Page 48 of 54

Vapona; O,O-dimethyl O-

dichlorovinyl phospate

DMMP, methyl phosphonic acid

Ethyl lactate/Isopar H/

Propoxypropanol ~7:2:1

ECH Chloromethyloxirane, 1-

chloro2,3-epoxypropane

MEA, Monoethanolamine C2H7NO 1.6 + 8.96 3

Ethyl cellosolve, Ethylene glycol

Ethyl lactate, Ethyl (S)-(-)-

R123 C2HCl2F3 NR + 11.5 ne

C4H7Cl2O4P 0.9 + <9.4 0.1

dimethyl ester

monoethyl ether

hydroxypropionate

C3H9O3P 4.3 + 10.0 ne

m.w. 118 1.6 + ne

C2H5ClO 8.5 + 10.2 0.5

C4H10O2 1.3 9.6 5

C5H10O3 3.2 + ~10 ne

Response

Factor

Confirmed

Value

IP (eV) TWA

Page 53

Model PI-700

Compound Name Synonym/Abbreviation Formula

Furfuryl alcohol C5H6O2 0.80 + <9.5 10

Gasoline #1 m.w. 72 0.9 + 300

Gasoline #2, 92 octane m.w. 93 1.0 + 300

Glutaraldehyde

Halothane

HCFC-22

(see Chlorodifluoromethane)

HCFC-123 (see 2,2-Dichloro-

1,1,1-trifluoroethane, R-123)

HCFC-141B (see 1,1-

Dichloro-1-fluorethane)

HCFC-142B (see 1-Chloro-

1,1-difluoroethane)

HCFC-134A (see 1,1,1,2-

Tetrafluoroethane)

HCFC-225 (see

Dichloropentafluoropropane)

Heptane, n- C7H16 2.8 + 9.92 400

Hexamethyldisilazane,1,1,1,3

,3,3-

Hexane, n C6H14 4.3 + 10.13 50

Hexanol, 1- Hexyl alcohol C6H14O 2.5 + 9.86 ne

Hexene, 1- C6H12 0.8 9.44 30

Hydrazine H4N2 2.6 + 8.1

Hydrogen Synthesis gas H2 NR + 15.43 ne

Hydrogen cyanide Hydrocyanic acid HCN NR + 13.60 C4.7

Hydrogen peroxide H2O2 NR + 10.54 1

Hydrogen sulfide H2S 3.3 + 10.45 10

Iodine I2 0.1 + 9.40 C0.1

Iodomethane Methyl iodide CH3I 0.2 + 9.54 2

Isoamyl acetate Isopentyl acetate C7H14O2 2.1 <10 100

Isobutne 2-Methylpropane C4H10 100 + 10.57 ne

Isobutanol 2-Methyl-2-propanol C4H10O 3.8 + 10.02 50

Isobutylene Isobutxene, Methyl butene C4H8 1.00 + 9.24 ne

Isobutyl acetate C6H12O2 2.6 150

Isobutyl acrylate

Isoflurane

Isooctane 2,2,4-Trimethylpentane C8H18 1.2 9.86 ne Isopar E Solvent Isoparaffinic hydrocarbons m.w. 121 0.8 + ne Isopar G Solvent Photocopier diluent m.w. 148 0.8 + ne Isopar K Solvent Isoparaffinic hydrocarbons m.w. 156 0.5 + ne Isopar L Solvent Isoparaffinic hydrocarbons m.w. 163 0.5 +

Isopar M Solvent Isoparaffinic hydrocarbons m.w. 191 0.7 +

Isopentane 2-Methylbutane C5H12 8.2 ne Isophorone C9H14O ? 9.07 C5

Isoprene 2-Methyl-1,3-butadiene C5H8 0.63 + 8.85 ne

Isopropanol Isopropyl alcohol, 2-propanol C3H8O 6.0 + 10.12 400

Isopropyl acetate C5H10O2 2.6 9.99 250

Isopropyl ether Diisopropyl ether C6H14O 0.8 9.20 250

Jet fuel JP-4 Jet fuel JP-5 Jet 5, Kerosene type aviaton fuel m.w. 167 0.6 + 15 Jet fuel JP-8

1,5-Pentanedial, Glutaric

dialdehyde

2-Bromo-2-chloro-1,1,1-

trifluoroethane

HMDS C6H19NSi2 0.2 + ~8.6

Isobutyl 2-propenoate, Acrylic

acid Isobutyl ester

1-Chloro-2,2,2-trifluoroethyl

difluoromethyl ether, forane

Jet B, Turbo B, Wide cut type

aviation fuel

Jet A-1, Kerosene type aviation

fuel

C5H8O2 0.8 + C0.0

C2HBrClF3 NR

C7H12O2 1.5 + ne

C3H2ClF5O NR ~11.7 ne

m.w. 115 1.0 + ne

m.w. 165 0.6 + 15

Response

Factor

Confirmed

Value

IP (eV) TWA

PI-700 Instruction Manual Rev. 2.5 Page 49 of 54

Page 54

Model PI-700

Compound Name Synonym/Abbreviation Formula

Limonene, D- (R)-(+)-Limonene C10H16 0.33 + ~8.2 ne

Kerosene (C10-C16 petro.

distillate - see Jet Fuels)

MDI (see 4,4'-Methylenebis

(phenylisocynate))

Mesitylene 1,3,5-Trimethylbenzene C9H12 0.35 + 8.41 ne

Methane Natural gas CH4 NR + 12.51 ne

Methanol Methyl alcohol, carbinol CH4O NR + 10.85 200

Methoxyethanol, 2-

Methoxyethoxyethanol, 2-

Methyl acetate C3H6O2 6.6 + 10.27 200

Methyl acrylate

Methylamine Aminomethane CH5N 1.2 8.97

Methyl bromide Bromomethane CH3Br 1.7 + 10.54 1

Methyl t-butyl ether MTBE, tert-Butyl methyl ether C5H12O 0.9 + 9.24 40

Methyl cellosolve

(see 2-Methoxyethanol)

Methyl chloride Chloromethane CH3Cl NR + 11.22 50

Methylcyclohexane C7H14 0.97 + 9.64 400

Methylene bis

(phenyl-isocyanate)

4,4'-Methylene chloride Dichloromethane CH2Cl2 NR + 11.32 25

Methyl ether Dimethyl ether C2H6O 3.1 + 10.03 ne

Methyl ethyl ketone MEK, 2-Butanone C4H8O2 0.9 + 9.51 200

Methylhydrazine

Methyl isobutyl ketone MIBK, 4-Methyl-2-pentanone C6H12O 0.8 + 9.30 50

Methyl Isocyanate CH3NCO C2H3NO 4.6 + 10.67 0.02

Methyl isothiocyanate CH3NCS C2H3NS 0.45 + 9.25 ne

Methyl mercaptan Methanethiol CH4S 0.54 9.44 0.5

Methyl methacrylate C5H8O2 1.5 + 9.7 100

Methyl nonafluorobutyl ether HFE-7100DL C5H3F9O NR + ne

Methyl-1,5-pentane-diamine,

2- (coats lamp)

Methyl propyl ketone MPK, 2-Pentanone C5H12O 0.93 + 9.38 200

Methyl-2-pyrrolidinone, N-

Methyl salicylate Methyl 2-hydroxybenzoate C8H8O3 1 ~9 ne Methylstyrene, a- 2-Propenylbenzene C9H10 0.5 8.18 50

Methyl sulfide DMS, Dimethyl sulfide C2H6S 0.44 + 8.69 ne

Mineral spirits (Stoddard

Solvent, see also Viscor

120B)

Mineral spirits Viscor 120B

Calibration Fluid, b.p. 156-

207°C

Mustard HD, Bis (2-chloroethyl) sulfide C4H8Cl2S 0.6 0.0005

Naphthalene Mothballs C10H8 0.42 + 8.13 10

Nitric oxide NO 5.2 + 9.26 25

Nitrobenzene C6H5NO2 1.9 + 9.81 1

Nitroethane C2H5NO2 NR 10.88 100

Nitrogen dioxide NO2 16.0 + 9.75 3

Nitromethane CH3NO2 NR 11.02 20

Methyl cellosolve, Ethylene

glycol monomethy ether

2-(2-Methoxyethoxy)ethanol

Diethylene glycol monomethyl

ether

Methyl 2-propenoate, acrylic acid

methyl ester

MDI, Mondur M C15H10N2O2

Monomethylhydrazine,

Hydrazomethane

Dytek-A amine, 2-Methyl

pentamethylenediamine

NMP, N-Methylpyrrolidone,

1-Methyl-2-pyrrolidinone, 1-

Methyl-2-pyrrolidone

C3H8O2 2.4 + 10.1 5

C7H16O3 1.2 + <10 ne

C4H6O2 3.7 + -9.9 2

C2H6N2 1.2 + 7.7 0.01

C6H16N2 ~0.6 + <9.0 ne

C5H9NO 0.8 + 9.17 ne

m.w. 144 0.7 + 100

m.w. 142 0.7 + 100

Response

Factor

Very slow ppb

level response

Confirmed

Value

+ 0.005

IP (eV) TWA

PI-700 Instruction Manual Rev. 2.5 Page 50 of 54

Page 55

Model PI-700

Compound Name Synonym/Abbreviation Formula

Nitropropane, 2- C3H7NO2 NR 10.71 10

Nonane C9H20 1.4 9.72 200

Octane, n- C8H18 1.8 + 9.82 300

Pentane C5H12 8.4 + 10.35 600

Peracetic acid

Peracetic/Acetic acid mix

Perchloroethene

PGME

PGMEA

Phenol Hydroxybenzene C6H6O 1.0 + 8.51 5

Phosgene Dichlorocarbonyl CCl2O NR 11.2 0.1 Phosphine in N2 PH3 3.9 + 9.87 0.3

Photocopier Toner Isoparaffin mix 0.5 +

Picoline, 3- 3-Methylpyridine C6H7N 0.9 9.04

Pinene, a- C10H16 0.31 + 8.07 ne

Pinene, b C10H16 0.37 + ~8 100

Piperylene, isomer mix 1,3-Pentadiene C5H8 0.69 + 8.6 100

Propane C3H8 NR + 10.95 2500

Propanol, n- Propyl alcohol C3H8O 5 10.22 200

Propene Propylene C3H6 1.4 + 9.73 ne

Propionaldehyde Propanal C3H6O 1.9 9.95 ne

Propyl acetate, n- C5H10O2 3.5 10.04 200

Propylene carbonate C4H6O3 62 + 10.5 ne

Propylene glycol 1,2-Propanediol C3H8O2 5.5 + <10.2 ne

Propylene oxide Methyloxirane C3H6O 6.6 + 10.22 20

Propyleneimine 2-Methylaziridine C3H7N 1.3 + 9.0 2

Propyl mercaptan, 2-

Pyridine C5H5N 0.7 + 9.25 5

Pyrrolidine (coats lamp) Azacyclohexane C4H9N 1.3 + ~8.0 ne

RR7300 (PGME?PGMEA)

Sarin

Stoddard Solvent

(see Mineral Spirits)

Styrene C8H8 0.40 + 8.43 20

Sulfur dioxide SO2 NR + 12.32

Sulfur hexafluoride SF6 NR 15.3 1000

Sulfuryl fluoride Vikane SO2F2 NR 13.0 6

Tabun

Tetrachloroethane, 1,1,1,2- C2H2Cl4 NR ~11.1 ne Tetrachloroethane, 1,1,2,2- C2H2Cl4 NR + ~11.1 1

Tetraethyllead TEL C8H20Pb 0.3 ~11.1 0.008

Tetraethyl orthosilicate Ethyl silicate, TEOS C8H20O4Si 0.7 + ~9.8 10

Tetrafluoroethane, 1,1,1,2- HFC-134A C2H2F4 NR ne

Tetrafluoroethene

Tetrafluoromethane CFC-14, Carbon tetrafluoride CF4 NR + >15.3 ne

Peroxyacetic acid, Acetyl

Hydroperoxide

Peroxyacetic acid, Acetyl

Hydroperoxide

PCE, Perchloroethylene,

Tetrachloroethylene

Propylene glycol methyl ether,

107-98-2 1-Methoxy-2-propanol

Propylene glycol methyl ether

108-65-6 acetate, 1-Methoxy-2-

acetoxypropane, 1-Methoxy-2-

propanol acetate

2-Propanethiol, Isopropyl

mercaptan

70:30 PGME:PGMEA (1-

Methoxy-2- propanol:1-

Methoxy-2-acetoxypropane)

GB, Isopropyl

methylphosphonofluoridate

Ethyl N, N-

dimethylphosphoramidocyanidate

TFE, Tetrafluoroethylene,

Perfluoroethylene

C2H4O3 NR + ne

C2H4O3/C2H

4O2

C2Cl4 0.57 + 9.32 25

C6H12O3 1.5 + 100

C6H12O3 1.0 + ne

C3H7N 0.66 + 9.2 ne

C4H10O2 /

C6H12O3

C4H10FO2P ~3

C5H11N2O2P 0.8 15ppt

C2F4 ~15 10.12 ne

Response

Factor

50 + ne

1.4 + ne

Confirmed

Value

IP (eV) TWA

PI-700 Instruction Manual Rev. 2.5 Page 51 of 54

Page 56

Model PI-700

Compound Name Synonym/Abbreviation Formula

Response

Factor

Confirmed

Value

IP (eV) TWA

Tetrahydrofuran THF C4H8O 1.7 + 9.41 200

Tetramethyl orthosilicate Methyl silicate, TMOS C4H12O4Si 1.9 + ~10 1

Therminol VP-1

Dowthern,3:1 Diphenyl oxide:

Biphenyl

C12H10O

C12H10

0.7 + ne

Toluene Methylbenzene C7H8 0.50 + 8.82 50

Tolylene-2,4-diisocyanate

TDI, 4-Methyl-1,3-phenylene-

2,4- diisocyanate

C9H6N2O2 1.4 + 0.002

Trichlorobenzene, 1,2,4- 1,2,4-TCB C6H3Cl3 0.46 + 9.04 C5

Trichloroethane, 1,1,1- 1,1,1-TCA, Methyl chloroform C2H3Cl3 NR + 11 350 Trichloroethane, 1,1,2- 1,1,2-TCA C2H3Cl3 NR + 11.0 10

Trichloroethene TCE, Trichloroethylene C2HCl3 0.54 + 9.47 50

Trichlorotrifluoroethane,

1,1,2- CFC-113

C2Cl3F3 NR 11.99 1000

Triethylamine TEA C6H15N 0.9 + 7.3 1

Triethyl borate

TEB; Boric acid triethyl ester,

Boron ethoxide

C6H15O3B 2.2 + ~10

Triethyl phosphate Ethyl phosphate C6H15O4P 3.1 + 9.79 ne

Trifluoroethane, 1,1,2-

Trimethylamine

Trimethylbenzene, 1,3,5-

(see Mesitylene)

Trimethyl borate

TMB; Boric acid trimethyl ester,

Boron methoxide

C2H3F3 NR 12.9 ne

C3H9N 0.9 7.82 5

C3H9O3B 5.1 + 10.10 ne

Trimethyl phosphate Ethyl phosphate C3H9O4P 8.0 + 9.99 ne

Turpentine Pinenes (85%) + other diisoprenes C10H16 0.3 + ~8 100

Undecane C11H24 2 9.56 ne

Varsol (see Mineral Spirits)

Vinyl actetate C4H6O2 1.2 + 9.19 10

Vinyl bromide Bromoethylene C2H3Br 0.4 9.80 5

Vinyl chloride in N2 Chloroethylene, VCM C2H3Cl 2.0 + 9.99 5

Vinylidene chloride –

(see 1,1-Dicholorethene)

Vinyl-2-pyrrolidinone, 1-

NVP, N-vinylpyrrolidone, 1-

ethenyl-2-pyrrolidinone

C6H9NO 0.8 + ne

Viscor 120B – (see Mineral

Spirits - Viscor 120B

Calibration Fluid)

Xylene, m- C8H10 0.4 + 8.56

Xylene, o- C8H10 0.6 + 8.56 Xylene, p- C8H10 0.5 + 8.44

NR = not recommended (does not register) ? = measurable but no data exists Confirmed Value = “+” means actual gas has been used to verify RF, “blank” means it is an empirical estimate IP = is the gases ionization potential (only gases < 10.6eV will respond to sensor) TWA/Time Weighted Average = generally accepted limit for safe 8 hour exposure (in ppm) ne = None established

PI-700 Instruction Manual Rev. 2.5 Page 52 of 54

Page 57

9.3 Spare Parts, Sensor Accessories, Calibration Equipment

Part Number Spare Parts

927-P25500-000 PI-700 Intelligent Transmitter Module (ITM for VOC Gas Sensors) 602-003295-FLT Model PI-700 Splash Guard Adapter with Integral Filter 377-P10000-0XX Replacement Plug-in VOC gas sensor (≤20ppm where XX=range) 377-P20000-XXX Replacement Plug-in VOC gas sensor (>20ppm where

XXX=range)

500-003087-100 Transient Protection PCA

Sensor Accessories

897-850800-010 NEMA 7 Aluminum Enclosure less cover – 3 port 897-850400-010 NEMA 7 Aluminum Enclosure Cover (Blank) 897-850801-316 NEMA 7 316SS Enclosure less cover – 3 port 897-850401-316 NEMA 7 316SS Enclosure Cover (Blank) 602-003295-000 Splashguard Adapter without Integral Filter 613-120000-700 Sensor Splashguard with Cal Port 613-2R0000-000 Remote Calibration Adapter 943-002273-000 Harsh Environment Sensor guard 327-000000-000 Programming Magnet 960-202200-000 Condensation prevention packet (for J-Box replace annually) 960-700PID-000 Moisture control Packet for plug-in sensor 017-557718-000 O-ring (used to secure Moisture Control Packet)

Model PI-700

Calibration Accessories

943-000000-000 Calibration Wind Guard 943-000006-132 Threaded Calibration Adapter 943-020000-000 Span Gas Kit: Includes calibration adapter, span gas humidifier,

200cc/min fixed flow regulator, and carrying case. (Not including

gas). 942-001123-000 Zero Air 103Liters See Detcon For Isobutylene Span Gasses (Range Specific) 943-090005-502 500 cc/min Fixed Flow Regulator for span gas bottle 985-241100-321 In-Line Humidifying Tube 24"

Recommend Spare Parts for 2 Years

927-P25500-000 PI-700 Intelligent Transmitter Module (ITM for VOC Gas Sensors) 600-003295-FLT Model PI-700 Splash Guard Adapter with Integral Filter 377-P10000-0XX Replacement Plug-in VOC gas sensor (≤20ppm where XX=range) 377-P20000-XXX Replacement Plug-in VOC gas sensor (>20ppm where

XXX=range) 500-003087-100 Transient Protection PCA 960-202200-000 Condensation prevention packet (for J-Box. Replace annually) 960-700PID-000 Moisture Control Packet for sensor 017-557718-000 O-ring (used to secure Moisture Control Packet)

PI-700 Instruction Manual Rev. 2.5 Page 53 of 54

Page 58

Model PI-700

9.4 Model PI-700 Engineering Drawings

1) PI-700 Series Breakaway and Wiring

2) PI-700 Series Dimensional, Mounting, and Wiring - 316 SS condulet

3) PI-700 Series Dimensional, Mounting, and Wiring - Aluminum condulet

9.1 Revision History

Revision Date Changes made Approval

0.0 08/01/2006 Initial Manual release. BM

0.1 04/01/2007 Engineering drawings changed to rev 1.

0.2 11/26/2007 Engineering drawings changed to rev 2. BM

1.0 02/29/2008 Yellow wire removed from ITM assembly, changed from DM 700 splashguard adapter to PI-700 Splashguard adapter.

1.1 07/14/2008 PID Sensor maintenance procedure modified. BM

1.2 10/01/2009 Added in-line humidifying tube to calibration procedures and Spare parts, Added PI-700 Splashguard adapter to Spare parts. Updated engineering drawings to rev 4.

1.3 11/16/2009 Addition of Splashguard Adapter with Integral Filter to Maintenance and Accessories.

1.4 12/17/2009 Changed Warranty period from 6 months to 12 months on PID Sensor cell

1.5 05/12/2010

Updated engineering drawings to rev 5.

Splash Guard adapter with Integral Filter now Standard, (before was option) Changed Spare parts list

1.6 12/13/2010 Correction to Note 2 page 15. regarding flow rate BM

1.7 04/25/2011 Added standard EN60079-11 to Section 2.1 and removed Teflon note in Section 2.5.

1.8 7/11/2011 Added Inrush current information to Specifications section. Added dimensional drawings for Aluminum condulet

1.9 04/16/2012

2.0 01/07/2013

Changed cable recommendation, updated the Modbus Register Map,

company address.

Updated ATEX approvals label, updated EN standards that sensor assembly meets.

2.1 04/10/2013

2.2 11/19/2013

2.3 12/25/2013

2.4 02/12/2014

2.5 04/15/2014

Added max/min AutoSpan chart LU Updated approvals label BM Update Calibration to include Wind Guard BM Clarifications to span cal procedure with target gas LU Update Specification to reflect slower response times BM

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: 281.292.2860 • www.detcon.com • [email protected]

PI-700 Instruction Manual Rev. 2.5 Page 54 of 54

Page 59

Sensor Wiring to Junction Box

Intelligent Transmitter Module (ITM)

Customer

Supplied Wiring (In)

Transient Protection Module (TPM) P/N 500-003087-100

Explosion

Proof

Junction Box

Customer

Supplied Wiring

(Out to next Device)

Power to next Device

(+) (-) mA

PGM1

ZERO

MODEL

PI-700

PGM2

SPAN

A(+)

B(-)

Modbus RS-485 to

Host Control Device

A(+) B(-)

Modbus RS-485 to

next Device

VOC

Housing Bottom Locking Set-Screw

Install a 100-250 Ohm

resistor if the 4-20mA

output is not used

Ground Points

Earth-Ground connection is made via 6-32

mounting holes.

Intelligent

Plug-in

Sensor

Splash Guard

P/N 613-120000-700

Remove Splash Guard Adapter from ITM to access Plug-in Sensor

Splash Guard Adapter

P/N 602-003295-FLT

Wiring to

Sensor Assembly

6-32 threaded

Ground point

NOTES:

det c on , i nc .

3200 Research Forest Dr. A-1 * The W oodlands Texas 77381 * www.detcon.com

detcon inc.

Power from and 4-20mA

out to Control Device

(+)

(-)

CLIENT:

PROJECT:

Rev DATE DESCRIPTION

DRN CHKD

REF. DWGS

P.O. NO.

REQ. NO.

PROJECT NO.

SERIAL NO.

PLANT:

NA NA NA NA NA

The information and technical data disclosed by this document may be used and disseminated only for the purposes and to the extent specifically authorized by Detcon Incorporated in writing. Such information and technical data are proprietary to Detcon Incorporated and may not be used or disseminated except as provided in the foregoing sentence.

4 3 2 1 0

11/20/13 06/25/10 01/14/08 04/01/07 08/01/06

Changes to Housing and Splashguard

Add draw ing for Aluminum Condulet

Removed yellow wire

TPM Changed

RELEASE FOR MAN UFACTURE

REVISION HISTORY

RH RH RH RH RH

SF SF

BM BM BM BM BM

APPD

3228 3228 3228 3228 3228

DWG #

Updates Updates Updates Updates Updates

SUBJECT

DRAWN BY:

R HUTSKO

FIRST ISSUE:

08/01/06

PI-700 Series

Breakaway and Wiring

SCALE

NTS

SALES ORDER NO.

DRAWING NO.

3228-1

SHEET NUM.

SIZE REV

REV

3207-1

DRAWING NO.

JOB NO.NASIZE

Red

(+)mA(-)

Blk

Blu

Grn

A(+)

Wht

B(-)

Page 60

Model DM-700

This page left intentionally blank

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: 281.292.2860 • www.detcon.com • [email protected]

PI-700 Instruction Manual Rev. 2.5

Page 61

REV

3228-2

SIZE

DRAWING NO.

mounting surface)

Wall (or other

Spacer

and Mounting

Bolt

Mounting

4.25"

ITM

PI-700 Series

Wiring, Dimensional,

NANTS

SALES ORDER NO.

SHEET NUM.

SCALE

3200 Res earch Forest Dr. A-1 * The W oodlands Texas 77381 * www.detcon.com

08/01/06

detcon, inc.

CLIENT:

Ground Point

6-32 threaded

Use Spacers to move

the J-Box and Sensor

allow access to Sensor

wall at least 0.25-0.5" to

Ø0.265"

" NPT Fitting

Mounting Hole

Plug unused ports

5.25"

8-32 Threaded

Ground Point

Assembly away from the

Typ.

12.55"

7.3"

Typ.

R. Hutsko

PROJECT:

Updates

3228

BMSFRH

BMLURH

FIRST ISSUE:

DRAWN BY:

Updates

SUBJECT

REF. DWGS

3228BMEMRH UpdatesTPM Changed04/01/071

3228

DWG #

BMSFRH

APPDDRN CHKD

4.9"

Typ.

5.5"

Mounting Holes

Junction-Box

(Detcon's J-Box Shown)

Explosion Proof Housing

MODEL

PI-700

detcon inc.

VOC

2.125"

(ITM)

Removed yellow wire01/14/082

RELEASE FOR MANUFACTURE08/01/060

Changes to Housing and Splashguard11/20/134

Add drawing for Aluminum Condulet06/25/103

REVISION HISTORY

Rev DATE DESCRIPTION

Splash Guard

Housing Bottom

Transmitter Module

" NPT Fitting

Ø0.265"

Mounting Hole

EYS Seal Fitting

" NPT Fitting

Installation Method

Recommended Electrical

JOB NO.

"T"

Proof

Junction Box

Model-700 Inteligent

this document may be used and disseminated

The information and technical data disclosedby

output is not used

resistor if the 4-20mA

Install a 100-250 Ohm

P.O. NO.

Wht

Blu

Grn Blk

Red

B(-) A(+)

Wiring to

(-) (+)

Sensor Assembly

not be used or disseminated except as provided

only for the purposes and to the extent

in writing. Such information and technical data

are proprietary to Detcon Incorporated and may

in the foregoing sentence.

specifically authorized by Detcon Incorporated

NANANA

PROJECT NO.

SERIAL NO.

REQ. NO.

PLANT:

SIZE

3228-2

Conduit

DRAWING NO.

REV

Drain

(-)

(+)

B(-)

N/U

A(+)

Customer

Supplied Wiring

(TPM) P/N 500-003087-100

Transient Protection Module

Enclosure to ground unit

properly. Mount to bottom of

enclosure using 6-32 screws.

Mount TPM in Explosion Proof

NOTES:

If the Sensor is not mechanically

grounded to the Junction Box, and

insure proper grounding.

external ground strap should be used to

Page 62

Model DM-700

This page left intentionally blank

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: 281.292.2860 • www.detcon.com • [email protected]

PI-700 Instruction Manual Rev. 2.5

Page 63

5.5" 3.95"

5.2"

Detcon's Aluminum

Explosion Proof

Junction-Box

(Condulet)

" NPT Port

Plug unused ports

5.825"

8-32 Threaded

Ground Point

Ø0.275"

Mounting

Hole

13.1" Typ

6-32 Threaded

Ground Point

detcon inc.

MODEL

4.88"

PI-700

Sensor Assembly

VOC

0.4" Typ

Splash Gaurd

NOTES:

det c on , i nc .

3200 Research Forest Dr. A-1 * The W oodlands Texas 77381 * www.detcon.com

CLIENT:

PROJECT:

Rev DATE DESCRIPTION

DRN CHKD

REF. DWGS

P.O. NO.

REQ. NO.

PROJECT NO.

SERIAL NO.

PLANT:

NA NA NA NA NA

4 3 2 1 0

11/20/13 06/25/10 01/14/08 04/01/07 08/01/06

Changes to Housing and Splashguard Add draw ing for Aluminum Condulet

Removed yellow wire

TPM Changed

RELEASE FOR MAN UFACTURE

REVISION HISTORY

RH RH RH RH RH

SF SF

BM BM BM BM BM

APPD

3228 3228 3228 3228 3228

DWG #

Updates Updates Updates Updates Updates

SUBJECT

DRAWN BY:

R HUTSKO

FIRST ISSUE:

06/25/10

DM-700 Series

with Detcon Aluminum

SCALE

NTS

Junction-Box

SALES ORDER NO.

DRAWING NO.

3207-3

SHEET NUM.

SIZE REV

NAA4

REV

3207-3

DRAWING NO.

JOB NO.NASIZE

Page 64

Model DM-700

This page left intentionally blank

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: 281.292.2860 • www.detcon.com • [email protected]

PI-700 Instruction Manual Rev. 2.5