Det-Tronics PIRECL User manual

Instructions 95-8526
Infrared Hydrocarbon Gas Detector
PointWatch Eclipse®
Model PIRECL
13.1 Rev.10/12 95-8526

APPLICATION ..............................1
OPERATION OVERVIEW......................1
Theory of Operation.......................1
Detectable Gases.........................2
Outputs ................................2
Data Logging Capability ....................2
Optional Third Party Addressable Modules .....2
SPECIFICATIONS ...........................3
IMPORTANT SAFETY NOTES..................5
INSTALLATION..............................6
Identication of Flammable Vapor(s) to be
Detected ............................6
Identication of Detector Mounting Locations ...6
Physical Installation Requirements ...........6
24 Vdc Power Supply Requirements ..........7
Wiring Cable Requirements .................7
Power Wiring Size and Maximum Length.......7
Optional Relays ..........................8
Wiring Procedure .........................8
Remote Calibration Wiring . . . . . . . . . . . . . . . . . . 8
DESCRIPTION.............................14
Internal Magnetic Switch ..................14
HART Communication ....................14
Multicolor LED ..........................15
Weather Baffle Assembly ..................15
Clock .................................15
History Logs ............................15
Remote Calibration Option.................16
Special Applications ......................16
OPERATION...............................18
Factory Default Settings ...................18
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . 18
4-20 ma Current Loop Output ..............18
Fault Indication..........................19
STARTUP .................................20
PIRECL Start-up/Commissioning Checklists ...20
CALIBRATION .............................21
Calibration Overview .....................21
Additional Calibration Notes................21
Calibration Initiation ......................22
Detailed Calibration Procedure using Magnetic
Switch .............................22
Time Out ..............................23
Calibration Abort ........................23
MAINTENANCE ............................24
Routine Inspection .......................24
Weather Baffle Cleaning ..................24
Optics Cleaning .........................24
O-Ring ................................24
Protective Caps and Covers ................24
TROUBLESHOOTING .......................25
DEVICE REPAIR AND RETURN ...............25
ORDERING INFORMATION ..................26
PointWatch Eclipse Detector ...............26
Calibration Equipment ....................26
Spare Parts ............................26
Assistance .............................26
APPENDIX A — FM APPROVAL DESCRIPTION ....A-1
APPENDIX B — CSA APPROVAL DESCRIPTION...B-1
APPENDIX C — ATEX APPROVAL DESCRIPTION..C-1
APPENDIX D — IECExAPPROVAL DESCRIPTION D-1
APPENDIX E — OTHER APPROVALS ............E-1
APPENDIX F — HART COMMUNICATION.........F-1
APPENDIX G — MODBUS COMMUNICATION . . . . . G-1
APPENDIX H — E Q PREMIER MODEL...........H-1
APPENDIX I — WARRANTY .....................I-1
APPENDIX J — CONTROL DRAWING ............ J-1
Table of Contents

IMPORTANT
Be sure to read and understand the entire
instruction manual before installing or operating
the gas detection s ystem. This product is intended
to provide early warning of the presence of a
ammable or explosive gas mixture. Proper device
installation, operation, and maintenance is required
to ensure safe and effective opera tion. If this
equipment is used in a manner not specied in
this manual, safety protection may be impaired.
application
The Pointwatch Eclipse®Model PIRECL is a diffusion-
based, point-type infrared gas detector that provides
continuous monitoring of combustible hydrocarbon gas
concentrations in the range of 0 to 100% LFL.
Three basic configurations are available:
• 4-20 mA output with HART communication protocol
and RS-485 MODBUS communications.
• 4-20 mA output with HART communication protocol
and RS-485 MODBUS communications, with two
alarm relays and one fault relay.
• Eagle Quantum Premier (EQP) compatible version
(no analog or relay outputs).
All units are powered from 24 volts DC, and are furnished
with an onboard "status indication" LED, an internal
magnetic calibration switch and an external calibration
line for use with the optional PIRTB remote calibration
termination box.
The Pointwatch Eclipse is ideal for use in harsh outdoor
environments and is certified for use in Class I, Division
1, and Zone 1 hazardous areas. It can be used as a
stand-alone detector, or as part of a larger facility
protection system using other Det-Tronics equipment
such as the FlexVu®UD10 Universal Display Unit, the
U9500H Infiniti Transmitter, the R8471H Controller, or
the Eagle Quantum Premier Fire and Gas Detection/
Releasing System.
opERation ovERviEw
THEORY OF OPERATION
Flammable hydrocarbon gases diffuse through the
weather baffle assembly into the internal measurement
chamber, which is illuminated by an infrared (IR)
source. As the IR passes through the gas within the
chamber, certain IR wavelengths are absorbed by the
gas, while other IR wavelengths are not. The amount
of IR absorption is determined by the concentration of
the hydrocarbon gas. A pair of optical detectors and
associated electronics measure the absorption. The
change in intensity of the absorbed light (active signal)
is measured relative to the intensity of light at a non-
absorbed wavelength (reference signal). See Figure 1.
The microprocessor computes the gas concentration
and converts the value into a 4 to 20 milliampere current
output or digital process variable signal, which is then
communicated to external control and annunciation
systems.
INSTRUCTIONS
Infrared Hydrocarbon Gas Detector
PointWatch Eclipse®
Model PIRECL
13.1 ©Detector Electronics Corporation 2012 Rev: 10/12 95-8526

295-852613.1
DETECTABLE GASES
Eclipse is capable of detecting many hydrocarbon
gases and vapors. Refer to the Specifications section
of this manual for details.
OUTPUTS
Standard
The standard version provides an isolated/non-isolated
4-20 mA current loop for connection to analog input
devices.
Optional Relays
An optional relay output board providing two
programmable alarm relay outputs and one fault
relay output can be factory installed with the standard
version. All relays are sealed and provide form C (NO/
NC) contacts. The high and low alarm relay settings are
programmable and can be set for latching or non-latching
operation. The low alarm cannot be set above the high
alarm threshold. Alarm configuration can be done with
the HART or MODBUS interface. The onboard multicolor
LED indicates a LOW alarm condition via a flashing red
color, and a HIGH alarm condition via a steady red color.
The Eclipse internal magnetic switch or HART Field
Communicator can be used to reset latched alarms. A
short-duration magnetic switch activation of 1 second
will reset latched alarms. Holding the magnetic switch
closed for 2 seconds will start the calibration sequence.
The external calibration line will not reset latched alarm
relays.
When the optional relay output board is specified, the
PIRECL’s approval rating is Ex d only.
NOTE
Refer to “Alarm Relays” in the Specifications
section of this manual for important information
regarding alarm relays.
EQP Version
The Eagle Quantum Premier model provides proprietary
digital signals that are compatible with the EQ Premier
network (LON) only. No analog 4-20 mA or RS-485
MODBUS signal outputs are provided. The optional
onboard HART communication port is operational,
but is not recommended for programming use. All
programming of the EQP PIRECL detector should be
accomplished using the S3 point configuration software.
Refer to the EQP Appendix within this manual for
additional information.
DATA LOGGING CAPABILITY
Non-volatile memory is provided to save the 10 most
recent calibrations, alarm/fault events, and minimum/
maximum operating temperature history. An hour meter
(running operational hours since startup) is provided to
record operating service time and to give an indication
of the relative time between events. This information is
accessible using HART, MODBUS communication, or
EQP system software.
OPTIONAL THIRD PARTY ADDRESSABLE MODULES
The PIRECL is electrically compatible with third party
addressable modules, provided the module fits within
the PIRECL wiring compartment. Whenever a third party
addressable module is installed, the PIRECL’s Ex e rating
and FM Approval are void, and only the Ex d rating is valid.
Installation of a third party addressable module requires a
specially labeled PIRECL model to ensure valid product
approvals.
SIGNAL PROCESSING
ELECTRONICS
GAS
CONCENTRATION
(LEL)
IR SOURCE
IR TRANSPARENT
WINDOW
OPTICAL
BEAM SPLITTER
MEASUREMENT
SIGNAL DETECTOR
REFERENCE
SIGNAL DETECTOR
OPTICAL
FILTERS
PERMEABLE
GAS CELL
SAPPHIRE
MIRROR
Figure 1—Measurement Scheme for Infrared Gas Detector

395-852613.1
SpEcificationS
INPUT VOLTAGE (All Models)—
24 Vdc nominal. Operating range is 18 to 32 Vdc.
Ripple cannot exceed 0.5 volts P-P.
POWER CONSUMPTION (All Models)—
Detector without Relays
4.0 watts nominal @ 24 Vdc
7.5 watts peak @ 24 Vdc
10 watts peak @ 32 Vdc.
Detector with Relays
5.5 watts nominal @ 24 Vdc
8.0 watts peak @ 24 Vdc
10.0 watts peak @ 32 Vdc.
TEMPERATURE RANGE—
Operating: –40°C to +75°C (–40°F to +167°F).
Storage: –55°C to +85°C (–67°F to +185°F).
HUMIDITY—
0 to 99% relative humidity (Det-Tronics verified).
5 to 95% relative humidity (FM/CSA/DEMKO verified).
GAS DETECTION RANGE—
0 to 100% LFL standard. Other ranges are configurable
(down to 20% full scale).
DETECTABLE GASES—
Model PIRECL is provided with field-selectable settings
for linear measurement of methane, propane, ethylene,
and butane. Model PIRECL is performance certified for
detection of methane, propane, ethylene, and butane,
and is shipped from the factory calibrated and set for
the customer’s choice of one of these gases. Digital
communication (such as HART) is required to confirm the
current setting and change it if required. In addition to the
gases listed above, the Eclipse is capable of detecting
many other hydrocarbon gases and vapors, with settings
provided for gases such as ethane and propylene. For
detection of gases other than the four certified gases,
performance characteristics / transfer curves are
available. Please consult the factory for details.
DETECTOR CONFIGURATION OPTIONS—
A significant number of PIRECL configuration parameters
are field programmable including gas type, measurement
range, alarm setpoints, tag number, special notations,
password protection, etc. Details are provided in the
HART Communication Appendix. Three PIRECL field
configuration programming methods are supported:
– HART Communication
– EQP System S3 Software
– RS-485 MODBUS Communication
THIRD PARTY ADDRESSABLE MODULE
(Optional)—
Input Voltage: 30 Vdc.
Input Current: 30 mA.
SHORT CIRCUIT CURRENT
(Non-Relay Output Versions Only)—
Power Supply Short Circuit Current (Isc): 5.4 amperes*
Short Circuit Current on Fused Line: 3.1 amperes*
Power Supply Max Voltage: Um = 250V**
* For installations in accordance with Increased Safety
wiring practices.
** For intrinsically safe HART communication port.
WARM-UP TIME (All Models)—
Device enters normal mode after two minutes upon cold
power-up. One hour warm-up time is recommended
for optimum performance. Signal output level during
warm-up is programmable.
CURRENT OUTPUT (Standard Models Only)—
Linear 4-20 mA (current source/sink, isolated/non-
isolated) rated at 600 ohms maximum loop resistance @
24 Vdc operating voltage.
VISUAL STATUS INDICATOR (All Models)—
Tri-color LED:
Red = Low alarm, high alarm, or calibration.
See Table 1 for Details.
Green = Power on / OK
Yellow = Fault or warm-up.
RELAY OUTPUTS (Optional)—
(Available on Ex d approved models only, not available
on Eagle Premier model).
ALARM RELAYS—
Low and High
Form C Type (NO/NC).
De-Energized during Normal mode, Energized on Alarm.
Contact Rating: 5 amperes at 30 Vdc.
Programmable for Latching or Non-Latching Operation.
Setpoint Range (both): 5-60% LFL.
Note: Low alarm range for EQP model is 5-40% LFL.
Factory Default Settings:
Low: 20% LFL – Non-latching
High: 50% LFL – Non-latching
Alarm relay programming can be accomplished using
HART or MODBUS.
CAUTION
When the PIRECL Gas Detector is used in
conjunction with an appropriate certied Control
Unit and congured for a non-latching high alarm,
the control unit must always latch and require a
deliberate manual action to clear a high gas alarm.
When used as a stand alone device, the high alarm
must always be programmed for latching operation.

495-852613.1
FAULT RELAY—
Form C Type (NO/NC). Energized during Normal mode,
De-Energized on Fault or loss of power.
Contact Rating: 5 amperes at 30 Vdc.
Non-Latching Operation only — not programmable.
DIGITAL OUTPUT (Optional)—
Digital communication, transformer isolated (78.5 kbps).
CALIBRATION—
All units are factory set and calibrated to the customer’s
choice of methane, propane, ethylene, or butane.
Field programming and full calibration are typically
required for detection of vapors other than the factory-
calibrated gas. Refer to the “Calibration” section of this
manual for details.
Routine calibration of the PIRECL after completion of initial
commissioning is supported, but not absolutely required.
Generally, an annual gas bump test or full calibration will
ensure proper sensitivity and response.
NOTE
Frequent visual inspections of the PIRECL are
recommended to conrm that there are no external
impediments to proper detection capability.
Four methods of initiating Calibration are supported:
– On-Board magnetic reed switch
– HART communication
– Remote calibration line for remote switch
– MODBUS communication
RESPONSE TIME —
Refer to the appropriate Appendix for details.
VIBRATION—
PIRECL successfully passes Sinusoidal Vibration
Testing in accordance with MIL-STD-810C, Method
514.2, Paragraph 4.5.1.3, Figure 514.2-7 Curve AW, and
C22.2 No. 152-M1984, and also DET NORSKE VERITAS
Certification Notes – No. 2.4 dated May 1995.
ACCURACY—
±3% LFL from 0 to 50% LFL, ±5% LFL from 51 to 100% LFL
(at room ambient temperature, +23°C).
SELF-DIAGNOSTIC TEST—
Fail-Safe operation ensured by performing all critical
tests once per second.
INGRESS PROTECTION—
IP66/IP67 (DEMKO Verified).
DETECTOR HOUSING MATERIAL—
316 stainless steel (CF8M).
CONDUIT ENTRY OPTIONS—
Two entries, 3/4 inch NPT or 25 mm.
HART COMMUNICATION PORT (optional)—
Intrinsically safe. For live maintenance, follow Control
Drawing 007283-001 in Appendix J.
OPTICS PROTECTION—
The three-layer weather baffle assembly is UV-resistant,
static-dissipating black Polythalimide plastic. The
standard weather baffle version, recommended for most
outdoor and indoor applications, includes an internal
hydrophobic filter. The standard weather baffle includes
a 3/16” (4.8mm) barb fitting for attaching a 3/16” I.D.
hose during calibration.
Two replacement weather baffles with special calibration
gas openings are available:
• 1/16” internally threaded calibration gas opening to
enable the user to install a threaded compression
fitting (not supplied) into the baffle for use with plastic
or metal tubing (007529-xxx Direct Duct compatible)
• 7/16-20 externally threaded calibration gas opening
for use with the PIRECL sample draw cup assembly
(007378-001).
Heated optics minimize condensation to ensure reliable
operation through temperature extremes.
WIRING—
Field wiring screw terminals are UL/CSA rated for up to
14 AWG wire, and are DIN/VDE rated for 2.5 mm2wire.
Screw terminal required torque range is 3.5–4.4 in.-lbs.
(0.4-0.5 N·m).
ELECTRICAL SAFETY CLASSIFICATION—
Installation Category (Overvoltage Category) II
& Pollution Degree 2 per ANSI/ISA-S82.02.01,
EN 61010-1 & IEC 61010-1.

595-852613.1
CERTIFICATION—
Refer to the appropriate Appendix for specific information.
DIMENSIONS—
See Figure 2.
SHIPPING WEIGHT (Approximate)—
10.5 pounds (4.8 kg).
WARRANTY—
Five year limited warranty from date of manufacture.
See Appendix I for details.
impoRtant SafEty notES
CAUTION
The wiring procedures in this manual are intended
to ensure proper functioning of the device under
normal conditions. However, because of the
many variations in wiring codes and regulations,
total compliance to these ordinances cannot be
guaranteed. Be certain that all wiring complies
with the NEC as well as all local ordinances. If
in doubt, consult the authority having jurisdiction
before wiring the system. Installation must be
done by a properly trained person.
CAUTION
This product has been tested and approved
for use in hazardous areas. However, it must
be properly installed and used only under the
conditions specified within this manual and
the specific approval certificates. Any device
modication, improper installation, or use in a faulty
or incomplete conguration will render warranty
and product certications invalid.
CAUTION
The detector contains no user serviceable
components. Service or repair should never be
attempted by the user. Device repair should be
performed only by the manufacturer or trained
service personnel.
LIABILITIES
The manufacturer’s warranty for this product is
void, and all liability for proper function of the
detector is irrevocably transferred to the owner or
operator in the event that the device is serviced or
repaired by personnel not employed or authorized
by Detector Electronics Corporation, or if the
device is used in a manner not conforming to its
intended use.
CAUTION
Observe precautions for handling electrostatic
sensitive devices.
NOTE
The PointWatch Eclipse is intended for detection
of hydrocarbon vapors only. The device will not
detect hydrogen gas.
4.5
(11.4)
5.2
(13.2)
9.3
(23.6)
4.6
(11.7)
D2055
3/16” (4.8mm) BARB FITTING
(STANDARD WEATHER BAFFLE)
Figure 2—Dimensions of Eclipse Detector in Inches (Centimeters)

695-852613.1
inStallation
Before installing the Pointwatch Eclipse, define the
following application details:
IDENTIFICATION OF FLAMMABLE VAPOR(S) TO
BE DETECTED
It is necessary to always identify the flammable vapor(s)
of interest at the job site in order to determine the
proper calibration gas setting for Pointwatch Eclipse. In
addition, the fire hazard properties of the vapor, such as
vapor density, flashpoint, and vapor pressure should be
identified and used to assist in selecting the optimum
detector mounting location within the area.
The detector must be installed per local installation
practices. For IEC/ATEX hazardous areas, it may be
acceptable to utilize Ex e wiring practices with the Eclipse
(non-relay versions).
IDENTIFICATION OF DETECTOR MOUNTING
LOCATIONS
Identification of the most likely leak sources and leak
accumulation areas is typically the first step in identifying
the best detector mounting locations. In addition,
identification of air current / wind patterns within the
protected area is useful in predicting gas leak dispersion
behavior. This information should be used to identify
optimum sensor installation points.
If the vapor of interest is lighter than air, place the sensor
above the potential gas leak. Place the sensor close to
the floor for gases that are heavier than air. For heavy
vapors, typically locate Pointwatch Eclipse at 2-4 cm
above grade elevation. Note that air currents may cause
a gas that is slightly heavier than air to rise under some
conditions. Heated gases may also exhibit the same
phenomenon.
The most effective number and placement of detectors
varies depending on the conditions at the job site. The
individual designing the installation must often rely on
experience and common sense to determine the detector
quantity and best locations to adequately protect the
area. Note that it is typically advantageous to locate
detectors where they are accessible for maintenance,
and also where the Eclipse status indication LED can
easily be seen. Locations near excessive heat / vibration
sources should be avoided if possible.
Final suitability of possible gas detector locations should
be verified by a job site survey. Gas detector area of
coverage is a subjective evaluation, and may require
long-term empirical data to confirm effectiveness. A
typical rule of thumb is that one detector can cover a 900
square foot area.
However, this rule of thumb is subject to change
depending upon specific application properties and
requirements.
NOTE
For additional information on determining the
quantity and placement of gas detectors in
a specific application, refer to the article titled
"The Use of Combustible Detectors in Protecting
Facilities from Flammable Hazards" contained
in the Instrumentation, Systems and Automation
Society (ISA) Transaction,Volume 20, Number 2.
PHYSICAL INSTALLATION REQUIREMENTS
Pointwatch Eclipse is provided with built-in mounting feet
that will accept 3/8 inch (M8) diameter mounting bolts.
Always ensure that the mounting surface is vibration-
free and can suitably support the total weight of the
Pointwatch Eclipse without assistance from electrical
cabling or conduit system.
The detector must be installed per local installation
practices. For IEC/ATEX hazardous areas, it may be
acceptable to utilize Ex e wiring practices with the
Eclipse.
Device Mounting Orientation
It is highly recommended that the Eclipse be installed
in the horizontal position. The detector is not position-
sensitive in terms of its ability to detect gas. However, the
weather baffle assembly provides superior performance
when the Eclipse is installed with the baffle in a horizontal
position.
LED Visibility
Select a mounting orientation where the Pointwatch
Eclipse status indication LED is visible to personnel
within the area.
CORRECT INCORRECT
Recommended Orientation of Eclipse Detector

795-852613.1
Calibration Gas Port Cover
A protective cover for the calibration gas injection port is
provided to ensure that contaminants are not accidently
introduced into the Eclipse optics. Ensure that this cover
is properly installed over the port when calibration is not
being performed.
NOTE
Failure to install the calibration gas port cover or
the use of a damaged cover may result in nuisance
faults and require cleaning the detector optics.
24 VDC POWER SUPPLY REQUIREMENTS
Calculate the total gas detection system power
consumption rate in watts from cold start-up. Select a
power supply with adequate capability for the calculated
load. Ensure that the selected power supply provides
regulated and filtered 24 Vdc output power for the entire
system. If a back-up power system is required, a float-
type battery charging system is recommended. If an
existing source of 24 Vdc power is being utilized, verify
that system requirements are met.
WIRING CABLE REQUIREMENTS
Always use proper cabling type and diameter for input
power as well as output signal wiring. 14 to 18 AWG
shielded stranded copper wire is recommended.
Always install a properly sized, master power fuse or
breaker on the system power circuit.
NOTE
The use of shielded cable in conduit or shielded
armored cable is required. In applications where
the wiring is installed in conduit, dedicated conduit
is recommended. Avoid low frequency, high
voltage, and non-signaling conductors to prevent
nuisance EMI problems.
CAUTION
The use of proper conduit installation techniques,
breathers, glands, and seals is required to prevent
water ingress and/or maintain the explosion-proof
rating.
POWER WIRING SIZE AND MAXIMUM LENGTH
1. The Eclipse detector must receive 18 Vdc
minimum to operate properly. 24 Vdc minimum is
recommended.
2. Always determine voltage drops that will occur to
ensure that 24 Vdc is delivered to the Eclipse.
3. Normally, nothing smaller than 18 AWG (0.75 mm2 )
is recommended by Det-Tronics for Eclipse power
cabling.
Wire size requirements are dependent upon power
supply voltage and wire length.
The maximum distance between the Eclipse detector
and its power supply is determined by the maximum
allowable voltage drop for the power wiring loop. If the
voltage drop is exceeded, the device will not operate.
To determine the maximum power loop voltage drop,
subtract the minimum operating voltage for the device
(18 Vdc) from the minimum output voltage of the power
supply.
To determine the actual maximum wire length:
1. Divide the maximum allowable voltage drop by the
maximum current draw of the Eclipse (0.31 A),
2. Divide by the resistance of the wire (ohms/foot value
available in wire manufacturer’s specification data
sheet),
3. Divide by 2.
For example: Consider an installation using 18 AWG
wiring with a power supply providing 24 Vdc.
Power supply voltage = 24 Vdc,
Eclipse minimum operating voltage = 18 Vdc
24 – 18 = 6 Vdc
Maximum Voltage Drop = 6
Maximum Current = 0.31 A
Wire Resistance in Ohms/Foot = 0.006523
6 ÷ 0.31 ÷ 0.006523 ÷ 2 = 1484 feet
NOTE
For FM/CSA/ATEX Certied systems using HART
communication, the maximum wiring distance is
2000 feet.
Maximum Voltage Drop
÷
Maximum Current
÷
Wire Resistance in Ohms/
Foot
÷
2
Maximum Wire Length =
Maximum Power Loop
Voltage Drop =
Power Supply Voltage
Minus
Minimum Operating Voltage

895-852613.1
OPTIONAL RELAYS
Optional relay contacts are “dry”, meaning that the
installer must provide the voltage to the common terminal
of the relay output.
AC voltage should not be switched directly using the
Eclipse relays. The use of an external relay is required if
AC voltage must be switched by the Eclipse relays.
In order to change alarm relay settings from the factory
default settings, it is recommended to utilize a HART
Field Communicator. Contact the factory for further
assistance.
NOTE
Refer to“Alarm Relays”in the Specications section
of this manual for important information regarding
alarm relays.
The relay board must temporarily be removed from
the Eclipse termination compartment to connect the
relay output field wiring cables. After the relay wiring
is connected, re-install the relay board using the three
captive screws. Refer to Figure 3.
WIRING PROCEDURE
Ensure that all cables are terminated properly. Pointwatch
Eclipse screw terminal torque range is 3.5–4.4 in.-lbs.
(0.4–0.5 N·m).
Conductor insulation should be stripped off with a bare
conductor length of 0.2 inch (5 mm) minimum and 0.7
inch (18 mm) maximum.
Cable shield, if used, should be properly terminated. If
not terminated, clip the shield wire off short and insulate
it within the detector housing to prevent the shield wire
from accidentally contacting the detector housing or any
other wire.
Figure 4 shows the wiring terminal strip located inside the
detector’s integral junction box.
Figure 5 shows the wiring terminal configuration for the
standard Eclipse without relays.
Figure 6 shows the wiring terminal configuration for the
standard Eclipse with relays.
Figures 7 through 10 show the 4-20 mA output of the
Eclipse detector in various wiring schemes.
Figure 11 shows a standard Eclipse wired to a FlexVu
UD10 Universal Display Unit.
Figure 12 shows a standard Eclipse wired to a Model
U9500H Infiniti Transmitter.
Figure 13 shows a standard Eclipse wired to a Model
R8471H Controller.
Figure 14 shows the wiring terminal configuration for the
Eagle Quantum Premier Eclipse.
Figure 15 shows the Eclipse wired for benchtop testing/
programming using HART protocol.
NOTE
The Eclipse housing must be electrically
connected to earth ground. A dedicated earth
ground lug is provided for this purpose.
REMOTE CALIBRATION WIRING
If it is desired to initiate calibration using the remote
calibrate line, the use of the Det-Tronics Model PIRTB
Termination Box is highly recommended for optimum
ease of installation and calibration. The PIRTB module
includes a magnetic reed switch, indicating LED, and
wiring terminal block. Refer to “Remote Calibration
Option” in the “Description” section of this manual for
details.
Figure 16 shows the location of the wiring terminals, reed
switch and LED inside the calibration termination box.
See Figures 17 and 18 for wiring details.
WARNING
Do not attempt to physically connect or touch
the calibration lead wire to DCV common in the
field to begin calibration. This practice is often
less than precise, and may result in a spark or
other undesirable results. For optimum ease of
installation and calibration, always utilize a Det-
Tronics junction box with magnetic reed-switch,
indicating LED, and termination block (Model
PIRTB).
Figure 3—Eclipse Wiring Termination Compartment
with Optional Relay Board Removed
FACTORY INSTALLED WIRING
TO RELAY BOARD
(DO NOT REMOVE)
CAPTIVE SCREWS (3)
RELAY TERMINAL BLOCK
A2133

995-852613.1
EARTH GND LUG
A2084
Figure 4—Terminal Strip Located Inside Wiring Compartment
24 VDC –
24 VDC –
24 VDC +
24 VDC +
CALIBRATE
+ 4-20 MA
– 4-20 MA
RS-485 A
RS-485 B
RELAY POWER (RED)
FAULT (ORANGE)
LOW ALARM (WHITE)
HIGH ALARM (YELLOW)
LOW ALARM
RELAY
HIGH ALARM
RELAY
FAULT
RELAY
WIRING TO OPTIONAL
RELAY BOARD
NO USER CONNECTION
RELAY BOARD TERMINALS
(OPTIONAL)
1
2
3
4
5
6
7
8
9
10
11
12
13
B2054
NO
NC
C
NO
NC
C
NO
NC
C
Figure 6—Wiring Terminal Identication
for Standard Eclipse with Relays
24 VDC –
24 VDC –
24 VDC +
24 VDC +
CALIBRATE
+ 4-20 MA
– 4-20 MA
RS-485 A
RS-485 B
RELAY POWER
FAULT
LOW ALARM
HIGH ALARM
NO USER CONNECTION
1
2
3
4
5
6
7
8
9
10
11
12
13
A2054
Figure 5—Wiring Terminal Identication
for Standard Eclipse Without Relays

10 95-852613.1
24 VDC
+–
+–
24 VDC –
24 VDC –
24 VDC +
24 VDC +
CALIBRATE
+ 4-20 MA
– 4-20 MA
RS-485 A
RS-485 B
RELAY POWER
FAULT
LOW ALARM
HIGH ALARM
1
2
3
4
5
6
7
8
9
10
11
12
13
NO USER CONNECTION
4 to 20 MA
B2051
*
*TOTAL LOOP RESISTANCE = 250 OHMS MINIMUM, 600 OHMS MAXIMUM.
DO NOT INSTALL RESISTOR WITHIN PIRECL ENCLOSURE IN EEx e APPLICATIONS.
Figure 8—Eclipse Detector Wired for Non-Isolated
4-20 mA Current Output (Sourcing)
24 VDC
+–
+
–
24 VDC –
24 VDC –
24 VDC +
24 VDC +
CALIBRATE
+ 4-20 MA
– 4-20 MA
RS-485 A
RS-485 B
RELAY POWER
FAULT
LOW ALARM
HIGH ALARM
1
2
3
4
5
6
7
8
9
10
11
12
13
NO USER CONNECTION
4 to 20 MA
B2050
*TOTAL LOOP RESISTANCE = 250 OHMS MINIMUM, 600 OHMS MAXIMUM.
DO NOT INSTALL RESISTOR WITHIN PIRECL ENCLOSURE IN EEx e APPLICATIONS.
*
Figure 7—Eclipse Detector Wired for Non-Isolated
4-20 mA Current Output (Sinking)
24 VDC
+–
24 VDC
+–
24 VDC –
24 VDC –
24 VDC +
24 VDC +
CALIBRATE
+ 4-20 MA
– 4-20 MA
RS-485 A
RS-485 B
RELAY POWER
FAULT
LOW ALARM
HIGH ALARM
1
2
3
4
5
6
7
8
9
10
11
12
13
NO USER CONNECTION
+–
4 to 20 MA
B2053
*
*TOTAL LOOP RESISTANCE = 250 OHMS MINIMUM, 600 OHMS MAXIMUM.
DO NOT INSTALL RESISTOR WITHIN PIRECL ENCLOSURE IN EEx e APPLICATIONS.
Figure 10—Eclipse Detector Wired for Isolated
4-20 mA Current Output (Sourcing)
24 VDC
+–
24 VDC
+–
24 VDC –
24 VDC –
24 VDC +
24 VDC +
CALIBRATE
+ 4-20 MA
– 4-20 MA
RS-485 A
RS-485 B
RELAY POWER
FAULT
LOW ALARM
HIGH ALARM
1
2
3
4
5
6
7
8
9
10
11
12
13
NO USER CONNECTION
+
–
4 to 20 MA
B2052
*
*TOTAL LOOP RESISTANCE = 250 OHMS MINIMUM, 600 OHMS MAXIMUM.
DO NOT INSTALL RESISTOR WITHIN PIRECL ENCLOSURE IN EEx e APPLICATIONS.
Figure 9—Eclipse Detector Wired for Isolated
4-20 mA Current Output (Sinking)

11 95-852613.1
Figure 12—Standard Eclipse Wired to a Model U9500H Inniti Transmitter
A2201
FLT RELAY SPOWERRESET PW IN NO COM NC – +CAL
S POWER OUT – ++–
24 VDC –
24 VDC –
24 VDC +
24 VDC +
CALIBRATE
+ 4-20 MA
– 4-20 MA
RS-485 A
RS-485 B
RELAY POWER
FAULT
LOW ALARM
HIGH ALARM
NO USER CONNECTION
1
2
3
4
5
6
7
8
9
10
11
12
13
24 VDC
+–
PIRECL
POINTWATCH ECLIPSE
U9500H
INFINITI TRANSMITTER
+
-
DCS
1
NOTES: 1 250 OHM RESISTOR REQUIRED IF USING HART PORT COMMUNICATIONS.
2 PIRECL ECLIPSE MUST BE PROGRAMMED TO PIR9400 FAULT MODE
FOR PROPER STATUS IDENTIFICATION AT THE U9500H TRANSMITTER.
Figure 11—Standard Eclipse Wired to a Model UD10 Universal Display Unit
UD10 DISPLAY UNIT
24 VDC –
24 VDC –
24 VDC +
24 VDC +
CALIBRATE
4-20 MA +
4-20 MA –
RS-485 A
RS-485 B
RELAY POWER (RED)
FAULT (ORANGE)
LOW ALARM (WHITE)
HIGH ALARM (YELLOW)
WIRING TO OPTIONAL
RELAY BOARD
NO USER CONNECTION
1
2
3
4
5
6
7
8
9
10
11
12
13
MODEL PIRECL
C2404
BLACK
WHITE
RED
Sensor Connector
Power Supply Connector
Output Loop
Connector
MODBUS
Connector
Relay Connector
P1
J2
J3
J4
P2
4-20 mA +
4-20 mA –
SHIELD
COM
RS485 A
RS485 B
HIGH ALARM COM
HIGH ALARM NC
HIGH ALARM NO
AUX ALARM COM
AUX ALARM NC
AUX ALARM NO
LOW ALARM COM
LOW ALARM NC
LOW ALARM NO
FAULT COM
FAULT NC
FAULT NO
24 VDC –
24 VDC +
SHIELD
24 VDC –
24 VDC +
SHIELD
SHIELD
CALIBRATE
24 VDC –
4-20 mA
24 VDC +
P1-3
P1-2
P1-1
J2-3
J2-2
J2-1
J4-1
J4-2
J4-3
J4-4
J4-5
J4-6
J4-7
J4-8
J4-9
J4-10
J4-11
J4-12
J3-1 J3-2 J3-3 J3-4 J3-5
P2-6 P2-5 P2-4 P2-3 P2-2 P2-1
NOTE 1 INTERNAL JUMPER REQUIRED FOR
NON-ISOLATED CURRENT OUTPUT
(SINGLE POWER SUPPLY).
NOTE 2 UD10 HOUSING MUST BE ELECTRICALLY
CONNECTED TO EARTH GROUND.
1

12 95-852613.1
Figure 14—Wiring Terminal Identication
for Eagle Quantum Premier Eclipse
24 VDC –
24 VDC –
24 VDC +
24 VDC +
24 VDC SHIELD
24 VDC SHIELD
COM 1 A
COM 1 SHIELD
COM 1 B
COM 2 A
COM 2 B
COM 2 SHIELD
CALIBRATE
1
2
3
4
5
6
7
8
9
10
11
12
13
A2087
CURRENT OUTPUT
CHASSIS GROUND
POWER
SENSOR
EXTERNAL RESET
HIGH ALARM
HIGH ALARM / OC
AUX. ALARM
AUX. ALARM / OC
LOW ALARM
LOW ALARM / OC
FAULT
FAULT / OC
1
3
4
5
6
7
8
9
10
11
12
13
14
15
16
–
+
+
–
+
–
18 TO 32
VDC
POWER
SIGNAL
2
OC = OPEN COLLECTOR OUTPUT
(BASE MODEL ONLY)
A2202
24 VDC –
24 VDC +
– 4-20 MA
1
2
3
4
5
6
7
8
9
10
11
12
13
R8471H CONTROLLER
PIRECL
POINTWATCH ECLIPSE
+ 4-20 MA
24 VDC
24 VDC –
24 VDC +
+
–
2
1
NOTES: 1INTERNAL JUMPER REQUIRED
FOR NON-ISOLATED CURRENT
OUTPUT (SINGLE POWER
SUPPLY).
2
250 OHM RESISTOR REQUIRED.
Figure 13—Standard Eclipse Wired to a Model R8471H Controller
CALIBRATE SWITCH
B2056
HOLD CALIBRATION MAGNET
AT OUTSIDE BASE OF JUNCTION
BOX AT THIS LOCATION
TO ACTIVATE CALIBRATION SWITCH
REMOTE LED
Figure 16—Remote Calibration Switch and LED in Optional
Det-Tronics PIRTB Termination Box
Figure 15—Wiring the Model PIRECL for Benchtop Testing/
Programming Using HART Protocol
24 VDC –
24 VDC –
24 VDC +
24 VDC +
CALIBRATE
+ 4-20 MA
– 4-20 MA
RS-485 A
RS-485 B
RELAY POWER
FAULT
LOW ALARM
HIGH ALARM
NO USER
CONNECTION
1
2
3
4
5
6
7
8
9
10
11
12
13
A2203
24 VDC
+
–
250 TO 500 OHMS

13 95-852613.1
24 VDC –
24 VDC –
24 VDC +
24 VDC +
CALIBRATE
+ 4-20 MA
– 4-20 MA
RS-485 A
RS-485 B
RELAY POWER
FAULT
LOW ALARM
HIGH ALARM
NO USER CONNECTION
FACTORY WIRING ONLY
1
2
3
4
5
6
7
8
9
10
11
12
13 B2057
CAL
SIGNAL
24 VDC –
SPARE
CAL
SIGNAL
24 VDC –
24 VDC + 24 VDC +
24 VDC
+
–
MAGNETIC REED SWITCH
FOR REMOTE CALIBRATION
TYPICALLY
NO CONNECTION
NOTE: IF REQUIRED, POWER AND 4 TO 20 MA
SIGNAL OUTPUT MAY BE ROUTED
THROUGH REMOTE CALIBRATION MODULE
USING SHIELDED CABLING.
STANDARD ECLIPSE
MODEL PIRTB
Figure 17—Remote Calibration Module Wired to Standard PointWatch Eclipse
A2567
CAL
SIGNAL
24 VDC –
SPARE
CAL
SIGNAL
24 VDC –
24 VDC + 24 VDC +
24 VDC
+
–
MAGNETIC REED SWITCH
FOR REMOTE CALIBRATION
TYPICALLY
NO CONNECTION
24 VDC –
24 VDC –
24 VDC +
24 VDC +
24 VDC SHIELD
24 VDC SHIELD
COM 1 A
COM 1 SHIELD
COM 1 B
COM 2 A
COM 2 B
COM 2 SHIELD
CALIBRATE
1
2
3
4
5
6
7
8
9
10
11
12
13
EQP ECLIPSE
MODEL PIRTB
Figure 18—Remote Calibration Module Wired to Eagle Quantum Premier Eclipse

14 95-852613.1
dEScRiption
INTERNAL MAGNETIC SWITCH
An internal magnetic switch is provided for resetting
latched alarms and initiating calibration. See Figure 19
for switch location. Momentary switch activation will reset
alarms, while holding the switch closed for 2 seconds or
longer will start the calibration sequence. The switch can
also be used to enter "live" calibration mode or terminate
the calibration sequence (see "Calibration" section).
HART COMMUNICATION
An optional intrinsically safe HART communication port
provides a non-intrusive means for connecting the HART
Communicator to the Eclipse. Refer to Figure 20.
Alternatively, the HART communicator can be connected
across a 250 ohm resistor in the 4-20 mA loop.
NOTE
All Eclipse gas detectors (except EQP models) are
furnished with HART capability. However, a 250
ohm resistor must be present within the 4-20 mA
loop for HART communication to work. In many
cases, this resistor is already present in the control
panel. For a bench test or a situation where the
4-20 mA loop is not active, this resistor must still
be installed for HART communication to function
properly (see Figure 15).
If a PIRTB Remote Calibration Termination Box is utilized,
the HART Communicator can be connected at the PIRTB.
Note that this connection requires removal of the PIRTB
cover.
Connect the HART Communicator, then turn it on by
pressing the ON/OFF key. The communicator will indicate
when the connection is made. If the connection is not
made, the communicator will indicate that no device was
found. Refer to the HART Appendix in this manual for
complete information.
WARNING
For Division applications, do not open cover when
explosive gas atmosphere may be present.
Refer to Appendix F in this manual for complete
information regarding HART communication with Eclipse.
CALIBRATION MAGNET
CALIBRATION NOZZLE
WEATHER BAFFLE
MULTICOLOR LED
HART COMMUNICATION PORT
(COVER INSTALLED)
PLACE CALIBRATION MAGNET
HERE TO ACTIVATE INTERNAL
REED SWITCH
C2058
EARTH GND LUG
Figure 19—PointWatch Eclipse
HART COMMUNICATOR CONNECTED
TO I.S. HART PORT
I.S. HART PORT NOT PROVIDED ON THIS MODEL
A2490
Figure 20—Eclipse Models with and without IS HART Port

15 95-852613.1
MULTICOLOR LED
An onboard multi-color LED is provided for indicating
faults, alarms, and calibration status. See Table 1. LED
operation for fault status is non-latching. LED operation
for alarms is configurable for latching/non-latching.
WEATHER BAFFLE ASSEMBLY
The black weather baffle is provided to prevent debris
and water from entering the optics, while allowing gases
and vapors to enter readily. An O-ring is provided on
the main Eclipse body to ensure a proper seal with the
weather baffle. Two weather baffle configurations are
available — one with an internal hydrophobic filter and
one without the internal hydrophobic filter.
The weather baffle version with hydrophobic filter is
recommended for most outdoor and indoor applications,
especially wet and/or dirty applications. When compared
to the weather baffle version without the hydrophobic
filter, it provides optimum protection against airborne
water and dirt, with minimal reduction in speed of gas
alarm response.
The weather baffle assembly is not field-serviceable,
but is easily replaceable. To remove the plastic weather
baffle from the Eclipse body, rotate it one quarter turn
counter-clockwise and pull.
The weather baffle is furnished with a calibration gas
nozzle for direct injection of gas to the sensor, allowing
the operator to apply gas to the detector without going
through the weather baffle.
NOTE
Always cover the calibration gas nozzle with the
cap during normal operation, and ensure that the
cap is not damaged.
CLOCK
An hour meter is provided to give a relative indication of
time for historical logs. The meter is zeroed at the time of
manufacture and only increments while power is applied.
HART or MODBUS communication is required to view the
running hours.
HISTORY LOGS
All history logs are saved in non-volatile memory and
retained through power cycles. HART or MODBUS
communication is required to view the history logs.
Event Log (Alarms and Faults)
An event log saves the ten most recent alarms and a
selected group of faults with an hour meter time stamp.
HART or MODBUS communication is required to view the
log. Types of logged events include:
• Low Alarms
• High Alarms
• Optics Fault
• Warm-up
• Calibration Fault
Calibration Log
A log of the ten most recent calibrations with time stamp
is saved. HART or MODBUS communication is required
to view the log. Types of calibration records include:
• Zero Only Calibration
• Complete Calibration
• Failed Calibration
Min/Max Temperature History
Ambient minimum and maximum exposed temperature
measurements are stored in non-volatile memory, and
are accessible via HART or MODBUS communication.
The measurements are time tagged with respect to total
hours of powered operation. The temperature log may
be reset, in which case all min/max exposed temperature
logs are cleared.
Table 1—LED Status Indication
LED Device Status
Green Normal operation.
Red Blinking indicates Low Alarm.
On steady indicates High Alarm.
Yellow Fault condition or warmup.

16 95-852613.1
REMOTE CALIBRATION OPTION
In most applications, it is recommended to install the
Pointwatch Eclipse where it will contact the vapor of
interest as quickly as possible. Unfortunately, the best
location for early warning can often result in accessibility
problems for the operator when calibration is required.
In these applications, the Model PIRTB Termination Box
is highly recommended to provide the ability to calibrate
the Pointwatch Eclipse from a remote location.
The PIRTB consists of a termination/circuit board, housed
within an explosion-proof junction box. The circuit board
contains a magnetic reed switch for initiating calibration,
an indicating LED to signal the operator when to apply
and remove the calibration gas, and a wiring terminal
block. The junction box cover is furnished with a small
viewing window that enables calibration to be performed
without hazardous area de-classification. The PIRTB may
be installed up to 100 feet away from the Eclipse. Refer
to Figure 21 for remote calibration configuration options.
NOTE
The remote calibration switch is intended for
initiating calibration only. Resetting latching alarm
outputs using the remote calibration switch cannot
be accomplished without entering the Calibration
mode.
The following recommendations are provided to enhance
operator ease and convenience of remote calibration
configurations:
1. Install the Eclipse in such a manner that the onboard
LED is visible whenever possible. This will aid in
checking device status "at a glance."
2. The Eclipse is provided with a calibration gas nozzle
on the weather baffle, which allows the use of
permanently attached calibration gas delivery tubing
(either polyethylene or stainless steel). The tubing is
typically routed in parallel with the remote calibration
cabling to the same location as the PIRTB termination
box. This arrangement enables a technician to
initiate calibration and deliver the calibration gas to
the Eclipse from a single location.
3. When permanently installed calibration gas tubing
is utilized, always install a shut-off valve at the open
end to prevent unwanted vapors or debris from
entering the tubing.
4. Always purge the permanent tubing with clean,
dry compressed air prior to and immediately after
calibration to ensure that residual combustible
gases are cleared. Always close the shutoff valve
after post-calibration purging is complete. This will
ensure that all hydrocarbon vapors are eliminated
from the Eclipse optics.
5. Note that permanently installed calibration gas tubing
will increase the calibration gas consumption rate as
a function of total tubing length.
Other methods of remote Eclipse calibration include
utilizing HART or MODBUS communications. Refer to
the HART and MODBUS appendices for details.
SPECIAL APPLICATIONS
The standard Pointwatch Eclipse is intended for
open area combustible gas detection applications.
However, special detector configurations are available
for applications such as duct-mounting and sample
extraction. Contact Detector Electronics Corporation for
information on these special device configurations.

17 95-852613.1
WRONG
HAZARDOUS LOCATION NON-HAZARDOUS LOCATION
24 VDC +
24 VDC –
4-20 MA SIGNAL
24 VDC +
24 VDC –
4-20 MA SIGNAL
24 VDC +
24 VDC –
4-20 MA SIGNAL
24 VDC +
24 VDC –
+ 4-20 MA
– 4-20 MA
PIRECL
PIRECL
HART
COMMUNICATOR
HART
COMMUNICATOR
HART
COMMUNICATOR
HART
COMMUNICATOR
PIRTB
PIRTB
D2060
NOTE: THE TOTAL WIRING DISTANCE FROM THE HART COMMUNICATOR
THROUGH THE POINTWATCH ECLIPSE TO THE SIGNAL RECEIVER
MUST NOT EXCEED 2000 FEET (610 METERS).
CAL GAS
24 VDC, CAL
PIRECL
PIRTB ISOLATED 4-20 MA
CAL GAS
PIRECL
PIRTB NON-ISOLATED 4-20 MA
NON-ISOLATED 4-20 MA
NON-ISOLATED 4-20 MA
Figure 21—Remote Calibration Conguration Options

18 95-852613.1
opERation
FACTORY DEFAULT SETTINGS
The Pointwatch Eclipse is shipped from the factory pre-
calibrated and set for the customer’s choice of 0-100%
LFL methane, propane, ethylene, or butane. Detection
of gases other than the factory default gas will require
changing the gas setting and performing field calibration
of the device. HART or MODBUS communication is
required to change the factory default settings. Refer
to the HART Communications Appendix within this
document for additional guidance.
OPERATING MODES
The Eclipse has three operating modes: warm-up,
normal, and calibrate.
Warm-up
Warm-up mode is entered upon application of 24 Vdc
operating power. During warm-up, the 4-20 mA current
loop output will indicate warm-up, the indicating LED is
yellow, and the alarm outputs are disabled. The warm-up
mode lasts nominally two (2) minutes after power-up.
Normal
After warm-up mode is completed, the device
automatically enters the Normal mode, and all analog
and alarm outputs are enabled.
Calibrate
Calibration of the Eclipse is normally not required; however,
the user has the option to verify proper calibration or to
perform calibration procedures if necessary. Guidelines
for when to perform a calibration or a response test are
listed in Table 2. The user has the choice of three methods
to place the device into the Calibrate mode. Refer to the
"Calibration" section in this manual for details.
4-20 MA CURRENT LOOP OUTPUT
Eclipse provides an isolated, linear current loop output
that is proportional to the detected gas level. Fault and
calibration status are also indicated by this output.
The factory default for full-scale 100% LFL output is 20
mA. Other full scale values (from 20 to 100% LFL) can
be selected using HART or MODBUS communication.
HART and MODBUS interfaces also have the ability to
calibrate the 4 mA and 20 mA levels.
When the default setting is selected, the LFL percentage
for a given current reading can be calculated using the
formula:
% LFL = (X – 4) ÷ 0.16 X = Current reading
in milliamperes
Example: Device reads 12 mA.
12 – 4 = 8
8 ÷ 0.16 = 50
50% LFL is indicated.
Normally, the current loop output is proportional to the
selected standard gas type only.
Table 2—Calibration or Response Test
Function Calibration Response
Test
Startup X
Gas selection changed X
Non-standard gas
(using linearization other than methane)
X
Replace any part X
Constant zero offset X
Periodic Functional Testing
(at least once a year)
X