Page 1
GP Series
Operating Instructions
Rev. F 10/2011
54201
Page 2
Page 3
WARRANTY
The manufacturer warrants this instrument to be free from defects in
material and workmanship under normal use and service for the
period of two years from date of purchase. This warranty extends
only to the original purchaser. This warranty shall not apply to fuses,
batteries, or any product that has been subject to misuse, neglect,
accident, or abnormal conditions of operation.
In the event of failure of a product covered by this warranty, the
manufacturer will repair the instrument when it is returned by the
purchaser, freight prepaid, to an authorized Service Facility within
the applicable warranty period, provided manufacturer’s
examination discloses to its satisfaction that the product was
defective. The manufacturer may, at its option, replace the product in
lieu of repair. With regard to any covered product returned within
the applicable warranty period, repairs or replacement will be made
without charge and with return freight paid by the manufacturer,
unless the failure was caused by misuse, neglect, accident, or
abnormal conditions of operation or storage, in which case repairs
will be billed at a reasonable cost. In such a case, an estimate will be
submitted before work is started, if requested.
THE FOREGOING WARRANTY IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING BUT
NOT LIMITED TO ANY IMPLIED WARRANTY OF
MERCHANTABILITY, FITNESS, OR ADEQUACY FOR ANY
PARTICULAR PURPOSE OR USE. THE MANUFACTURER
SHALL NOT BE LIABLE FOR ANY SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES, WHETHER IN CONTRACT,
TORT, OR OTHERWISE.
Page 4
TABLE OF CONTENTS
1 SAFETY INSTRUCTIONS ............................................ 1
2 DESCRIPTION ............................................................... 4
3 GP MONITOR ................................................................ 5
3.1 TECHNICAL DATA ...................................................... 5
3.1.1 Measurement Specifications ............................... 5
3.1.2 Electrical Specifications ...................................... 6
3.1.3 Environmental Specifications ............................. 6
3.2 MOUNTING INSTRUCTIONS ........................................ 7
3.2.1 Mounting Bracket Accessory .............................. 8
3.2.2 Cutout Template and Cosmetic Frame.............. 10
3.3 ELECTRICAL INSTALLATION ..................................... 11
3.3.1 Terminal Block Layout ...................................... 11
3.3.2 Raytek Sensor Model GP .................................. 13
3.3.3 Raytek Sensor Model XR .................................. 13
3.3.4 Raytek Sensor Models CI3, CM, TX ................ 13
3.3.5 Common Input Devices .................................... 14
3.3.6 Power Connections ........................................... 16
3.3.7 Output Connections ......................................... 17
3.3.8 External Relay (Accessory) ............................... 18
3.4 OPERATION ............................................................... 18
3.4.1 Control Panel .................................................... 18
3.4.2 Device Selection ................................................ 20
3.4.3 Emissivity ......................................................... 22
Page 5
3.4.4 Setpoints 1 and 2 .............................................. 23
3.4.5 Analog 4 - 20 mA Output ................................ 27
3.4.6 Degrees C and F ................................................ 28
3.4.7 Signal Processing .............................................. 29
3.4.8 Ambient Temperature Compensation ............... 30
3.4.9 Display and Analog Output Offset .................. 31
3.4.10 Thermocouple Output..................................... 32
3.4.11 Lockout Mode .................................................. 33
3.4.12 Factory Defaults ............................................. 34
3.5 QUICK REFERENCE ................................................... 34
4 INSTALLATION OF SENSING HEADS ................ 39
4.1 RAYTEK SENSING HEADS ......................................... 39
4.9 AIMING THE SENSING HEAD ................................... 43
5 GPR/GPS SENSING HEAD ....................................... 44
5.1 OPTIONS ................................................................... 47
5.1.1 Air/Water-cooled Housing (GPR/GPS) ........... 47
5.2 ZUBEHÖR .................................................................. 49
5.2.1 Adjustable Mounting Bracket .......................... 49
5.2.2 Air Purge Collar ............................................... 49
5.2.3 Right Angle Mirror .......................................... 51
5.2.4 Sighting Viewer (GPR)..................................... 52
5.3 TECHNICAL DATA .................................................... 52
5.3.1 Optical Parameter ............................................. 52
5.3.2 Measurement Specifications ............................. 55
5.3.3 Environmental Specifications ........................... 55
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6 MAINTENANCE .......................................................... 57
6.1 FAIL-SAFE OPERATION ............................................. 58
6.2 CLEANING THE LENS ................................................ 58
7 APPENDIX ..................................................................... 60
7.1 DETERMINATION OF EMISSIVITY .............................. 60
7.2 TYPICAL EMISSIVITY VALUES ................................... 61
8 NOTES ............................................................................ 65
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Page 8
Safety Instructions
GP Series Rev. F 10/2011 1
1 Safety Instructions
This document contains important information, which should be
kept at all times with the instrument during its operational life. Other
users of this instrument should be given these instructions with the
instrument. Eventual updates to this information must be added to
the original document. The instrument should only be operated by
trained personnel in accordance with these instructions and local
safety regulations.
Acceptable Operation
This instrument is intended only for the measurement of
temperature. The instrument is appropriate for continuous use. The
instrument operates reliably in demanding conditions, such as in
high environmental temperatures, as long as the documented
technical specifications for all instrument components are adhered to.
Compliance with the operating instructions is necessary to ensure the
expected results.
Unacceptable Operation
The instrument should not be used for medical diagnosis.
Replacement Parts and Accessories
Use only original parts and accessories approved by the
manufacturer. The use of other products can compromise the
operational safety and functionality of the instrument.
Instrument Disposal
Disposal of old instruments should be handled
according to professional and environmental
regulations as electronic waste.
Page 9
Safety Instructions
2 Rev. F 10/2011 GP Series
Operating Instructions
The following symbols are used to highlight essential safety
information in the operation instructions:
Helpful information regarding the optimal use of the
instrument.
Warnings concerning operation to avoid instrument
damage and personal injury.
The instrument can be equipped with a Class 2 laser.
Class 2 lasers shine only within the visible spectrum at an
intensity of 1 mW. Looking directly into the laser beam
can produce a slight, temporary blinding effect, but does
not result in physical injury or damage to the eyes, even
when the beam is magnified by optical aids. At any rate,
closing the eye lids is encouraged when eye contact is
made with the laser beam. Pay attention to possible
reflections of the laser beam. The laser functions only to
locate and mark surface measurement targets. Do not aim
the laser at people or animals.
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Safety Instructions
GP Series Rev. F 10/2011 3
Pay particular attention to the following safety instructions.
Use in 110 / 230 VAC electrical systems can result in
electrical hazards and personal injury if not properly
protected. All instrument parts supplied by electricity
must be covered to prevent physical contact and other
hazards at all times.
Page 11
Description
4 Rev. F 10/2011 GP Series
2 Description
The GP monitor consists of printed circuit boards, A/D converters,
microprocessor, control switches, and power conditioners, all
mounted in a 1/8 DIN panel-mount NEMA-12 (IP 54) enclosure. The
GP monitor accepts inputs from any 0-5V and 4-20mA devices, which
allows it to be used as a panel meter for many applications. Other
settings allow the GP to act as a temperature monitor for Raytek fixed
infrared sensors like GPR, GPS, CI3, CM, TX and XR and for other
temperature gathering devices. The GP Monitor also accepts various
types of thermocouple inputs. It provides two programmable
setpoint alarm signals (open collector or relay) and one of two types
of analog output: 4-20 mA output or thermocouple output. (Factory
default is 4-20 mA output.)
Figure 1: GP Monitor
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GP Monitor
GP Series Rev. F 10/2011 5
3 GP Monitor
3.1 Technical Data
3.1.1 Measurement Specifications
Input Accuracy: 0 – 5 V input resolution: 1 mV,
accuracy: ± 2 mV
4 – 20 mA input resolution: 0.01 mA
accuracy: ± 0.02 mA
J, K, E, N, T thermocouple input:
± 0.5 % or ± 2°C, whichever is greater
R, S thermocouple input:
± 0.5 % or ± 3°C, whichever is greater
Output Accuracy: 4 – 20 mA output resolution: 0.014 mA
accuracy: ± 0.02 mA
J, K, E, N, T thermocouple output:
± 0.5 % or ± 2°C, whichever is greater
R, S thermocouple output:
± 0.5 % or ± 4°C, whichever is greater
Response Time: 300 ms (GPR/GPS system)
200 ms (all other)
Display: 4 digit LED
Emissivity: 0.10 to 1.09, adjustable in 0.01 increments –
H001 (GP heads) and H007 (XR heads) only
Warm-up Time: 5 s
Peak Hold: 0 to 998 s (999=infinite hold)
Valley Hold: 0 to 998 s (999=infinite hold)
Averaging: 0 to 60 s
Fail-Safe: Full or low scale, depending upon system
failure, see section 6.1 Fail-Safe Operation,
Seite 58.
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6 Rev. F 10/2011 GP Series
Setpoints:
Head type H001: -18 to 538°C (0 to 1000°F)
Head type H003: 0 to 500°C (32 to 932°F)
Head type H004: 0 V input setting = low scale,
5 V input setting = high scale
Head type H005: 4 mA input setting = low scale,
20 mA input setting = high scale
Head type H006: scale = input thermocouple range:
J-type: -40 to 750°C (-40 to 1382°F)
K-type: -40 to 1250°C (-40 to 2282°F)
E-type: -40 to 700°C (-40 to 1292°F)
N-type: -40 to 1300°C (-40 to 2372°F)
R-type: 0 to 1750°C (32 to 3182°F)
S-type: 0 to 1750°C (32to 3182°F)
T-type: -100 to 350°C (-148 to 662°F)
Head type H007: -40 to 1650°C (-40 to 3002°F)
(depending on model)
4 mA input setting = low scale,
20 mA input setting = high scale
3.1.2 Electrical Specifications
Voltage: 110 – 220 VAC + 20 %, 50 – 60 Hz, 100 mA
Current output: 4 to 20 mA
Max. loop impedance: 350
2 Setpoints output: CMOS level Hi/Lo (5 V / 0 V)
GPC Monitor SP1, SP2: 15 mA @ 5 V
Mechanical Relay: AC contact: 250 VAC, 3 A
GPCM Monitor DC contact: 30 VDC, 3 A
3.1.3 Environmental Specifications
Dimensions: 1/8 DIN, 118 mm length
(1.75 x 3.63 x 4.75 in)
Weight: 320 g (0.7 lbs)
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GP Monitor
GP Series Rev. F 10/2011 7
Rating: IP 54 (NEMA-12), front panel only
Operating Temperature: 0 to 50°C (32 to 122°F)
Relative Humidity: 10 - 95 %, non-condensing
Storage Temperature: -30 to 65°C (-22 to 150°F)
3.2 Mounting Instructions
The GP monitor meets NEMA-12 (IEC529, IP54) requirements (front
panel only) for protection of the electronics when mounted properly.
It should be surface mounted using the flanges and holes provided
and mounted in such a manner to allow the free flow of air around
the unit. Ambient temperatures should be kept within the range of
0 to 50°C (32 to 120°F).
Mount the monitor as far away as possible from potential
sources of electromagnetic interference!
Complete the following steps to mount the GP monitor to a panel, see
also Figure 2:
1. Cut a hole 45 mm high by 92 mm wide (1.8 in by 3.62 in) in the
panel.
2. Slip the gasket over the rear of the monitor and then back the
monitor into the hole from the front side of the panel. (Mounting
bracket and cosmetic frame are available as accessories.)
3. Attach the fixing clamps to both sides of the monitor. Make sure
the tab is secure in the hole on both sides.
4. Fix the monitor with the clamp screws!
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GP Monitor
8 Rev. F 10/2011 GP Series
Figure 2: Mounting the Monitor
5. Secure the monitor to the panel by tightening both fixing clamp
screws until the flanges are snug against the back surface of the
panel.
6. Connect the terminal cable as described in the following section.
7. After you complete the electrical installation, secure the rear
cover to the back of the monitor.
Do not operate with rear cover removed because of
electrical shock hazard!
3.2.1 Mounting Bracket Accessory
A mounting bracket is available as an accessory. To mount a GP
Monitor to a wall, post, column, or other flat surface, complete the
following steps:
1. Insert the rear of the monitor through the bracket’s opening so
the bottom of the monitor rests on the bracket surface. Make sure
the gasket is in place Figure 3.
Rear Cover
Gasket
Hole
Fixing Clamp
Tab
Clamp Screw
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GP Monitor
GP Series Rev. F 10/2011 9
Figure 3: Mounting Bracket Accessory Installation
2. Insert the Tab on the side of each fixing clamp (one per side) into
the hole on the side of the monitor housing and hold them. You
might need to loosen the fixing clamp screws first, see Figure 4.
Figure 4: Completing the Installation
Mounting Bracket
Gasket
Hole
Fixing Clamp
Tab
Clamp Scres
Before mounting bracket, connect wires
and attach rear cover
Tighten Fixing Clamp
Screws
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GP Monitor
10 Rev. F 10/2011 GP Series
4. You will need to attach wires to the monitor’s terminals and
attach the rear cover before mounting the bracket onto a surface.
(Refer to the manual for wiring instructions for your particular
device.)
5. Use 3 appropriately sized screws or bolts to fasten the bracket
onto your work surface.
This completes the monitor bracket accessory installation.
3.2.2 Cutout Template and Cosmetic Frame
If you are mounting your monitor into a panel, this plastic frame can
be used as a template for determining the proper dimensions for
your panel cutout. To use, hold or tape the template against the panel
at the location where you want to mount the monitor, and mark
around the inside edges, see Figure 5.
Once you cut the panel, you can use this template as a frame to hide
scratches or small voids on the panel that might have been created
during the cutting process.
To install, simply insert the frame between the monitor bezel and
mounting gasket prior to inserting the monitor into the panel.
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GP Monitor
GP Series Rev. F 10/2011 11
Figure 5: 1/8 DIN Cutout Template and Cosmetic Frame
3.3 Electrical Installation
3.3.1 Terminal Block Layout
Either soldered spade lugs or bare wires are acceptable for
connections.
Mark around
inside edges
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GP Monitor
12 Rev. F 10/2011 GP Series
Figure 6: Terminal Block Layout
Terminal block definitions:
1 4 - 20 mA output + 11 Setpoint 1 + / Relay 1 *
2 4 - 20 mA/TC output – 12 Setpoint 1 – / Relay 1 *
3 TC output + 13 Setpoint 2 + / Relay 2 *
4 TC input – 14 Setpoint 2 – / Relay 2 *
5 TC input + 15 Reset +
6 Input 2 – (Ground) 16 Reset – (Ground)
7 Input 2 + (0-5 V or ambient signal) 17 Calibration (Potential!)
8 Shield 18 no connection
9 24 VDC output power (50 mA max) 19 N Neutral (power)
10 Input 3 (4 - 20 mA or GPR/GPS) 20 H Hot (power)
* see Table 8 Output Connections, page 18
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GP Monitor
GP Series Rev. F 10/2011 13
Incorrect wiring can damage the monitor, sensor, and/or
input device and void the warranty!
3.3.2 Raytek Sensor Model GP
The following table shows wiring connections for the GP sensing
heads to the monitor.
GPR/GPS
(including high temperature cable)
Terminal Pin
Wire Color
6
black
7
green
8
bare
9
red
10
white
Table 1: Wiring GP Sensing Heads
3.3.3 Raytek Sensor Model XR
The following table shows wiring connections for the XR sensing
heads to the monitor.
XR
Pin Monitor
Function
6
Ground
8
Shield
10
mA signal
Table 2: Wiring XR Sensing Heads
3.3.4 Raytek Sensor Models CI3, CM, TX
The following tables show wiring connections for the CI3, CM, TX
sensing heads to the monitor.
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14 Rev. F 10/2011 GP Series
CI3 TX
Terminal Pin
Function / Wire Color
Terminal Pin
Function
4
Power (-) / black
8 Shield
6
Signal ground / green
9 TX (+)
7
Signal (+) / white
10
TX (-)
8
Shield
9
Power (+) / red
Table 3: Wiring CI3 / TX Sensing Heads
CM
Pin Monitor
Wire Color
4
black
6
brown
7
yellow
8
shield
9
orange
Table 4: Wiring CM Sensing Heads
The GP monitor is supplying power to the CI3, CM and TX when
connected as described in the table above and external power
connections are unnecessary (maximum power = 24 VDC @ 50 mA).
Please note that sensing heads other than those listed above may
need external power if their power consumption needs exceed what
is available from the monitor!
3.3.5 Common Input Devices
The following tables show the wiring for sensing heads or input
devices with 0-5 V and 4-20 mA outputs or thermocouples to the
monitor.
0 - 5 V
4 - 20 mA
Pin
Function
Pin
Function
6
Signal (-)
6 GND
7
Signal (+)
8 Shield
8
Shield
10
4 - 20 mA Input
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GP Monitor
GP Series Rev. F 10/2011 15
External Reset Input
Thermocouple Input
Pin
Function
Pin
Function
15
Reset
4 Signal (-)
16
GND
5 Signal (+)
Table 5: Wiring Sensing Heads or Input Devices
The External Reset Input is used to restart the “clock” for the
PeakHold/ ValleyHold/Averaging functions but not to reset the
values to 0. The reset can be activated by installing a switch between
terminals 15 and 16.
Use Table 6 when connecting either 0-5 V or 4-20 mA input devices
that can use the 24 VDC/50 mA power available from the monitor.
Make sure to unplug the unit before wiring devices or power!
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16 Rev. F 10/2011 GP Series
0 - 5 V
4 - 20 mA 4 Wire
4 - 20 mA 2 Wire
Pin
Function
Pin
Function
Pin
Function
6
Power (-)
6 Power (-)
8 Shield
6
Signal (-)
6 4 - 20 mA (-)
9 4 - 20 mA (+)
7
Signal (+)
8 Shield
10
4 - 20 mA (-)
8
Shield
9 Power (+)
9
Power (+)
10
4 - 20 mA (+)
Table 6: Wiring Devices that Use Power from Monitor
Figure 7: Installation 4 – 20 mA (4 Wires)
Figure 8: Installation 4 – 20 mA (2 Wires)
For further information see section 3.4.2 Device Selection, Seite 20.
3.3.6 Power Connections
You can connect 110-220VAC, 50-60Hz, to the monitor. It can
automatically sense whether you connect 110 or 220 VAC. Use Table
7 as a guide.
GP Monitor
V
cc
+
I
+
I
meas
–
V
cc
–
Shield
External Device
GP Monitor
Shield
External Device
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GP Monitor
GP Series Rev. F 10/2011 17
Pin
Funktion
18
Erde (Netz)
19
N Nullleiter
20
H Phase
Table 7: Power Connections
The unit be used in a closed cabinet to prevent electrical
shock!
3.3.7 Output Connections
The monitor has the following outputs:
4 - 20 mA
Thermocouple outputs (J, K, E, N, T, R, and S)
Setpoints 1 und 2, optional: potential free relay contacts
4 - 20 mA
Thermocouple
Pin
Function
Pin
Function
1
4-20 mA output
2 Thermocouple (-)
2
Analog ground
3 Thermocouple (+)
8
Shield
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18 Rev. F 10/2011 GP Series
GPC: Setpoints 1 and 2
GPCM: Relay (optional)
Pin
Function
Pin
Function
11
Setpoint 1 (RLast > 100 Ω)
11
Opener 1 / Closer 1
12
Digital ground
12
Changer 1
13
Setpoint 2 (RLast > 100 Ω)
13
Opener 2 / Closer 2
14
Digital ground
14
Changer 2
Table 8: Output Connections
3.3.8 External Relay (Accessory)
A solid state relay accessory is available as a switching output for
setpoint use as a control for an alarm or triggering mechanism. The
setpoint output can supply 15 mA @ 5 V for SSR control. A wiring
diagram for the relay accessory is shown in the following figure. Two
relays are necessary to take advantage of both setpoints.
Figure 9: Relay Accessory Wiring
The following relay is available:
DC activated / electrically isolated solid state relay for AC
voltages from 24 – 330 VAC / 10 A (XXXGPSSRAC)
3.4 Operation
3.4.1 Control Panel
The GP Monitor consists of a control panel with 4 LED’s, 3 buttons,
and 5 indicating lights. Besides displaying the current temperature or
user-defined value, the LED’s also display parameter settings. By
To alarm or
controlling device
to
GP Monitor
Pin 11 or 13
(Setpoints)
Pin 12 or 14
(Digital ground)
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GP Monitor
GP Series Rev. F 10/2011 19
using the key and the and arrow keys you can control the
different functions, and the indicator LED’s show the function being
addressed. The following figure shows the start-up screen when
power is first turned on (no information stored on EEPROM), or
when factory defaults are restored, see section 3.4.12 Factory
Defaults, Seite 34.
Figure 10: The Control Panel Start-up Screen
The “N” indicator, on the left side of the panel, when lit, shows that
the unit is working normally. The “O” and “L” indicators are
controlled by Setpoints 1 and 2 (SP1, SP2). The “O” indicator, when
lit, shows that the measured temperature or value exceeds the
current SP1 or SP2 setting. The “L” indicator, when lit, indicates that
the measured temperature or value is lower than the current SP1 or
SP2 setting.
On the right side of the panel are two indicators that show which
temperature value the unit is set to if temperature sensors are
attached to the monitor. The “C” indicates if the temperature
measurement is in degrees C (Celsius). The “F” indicates if the
temperature measurement is in degrees F (Fahrenheit). For 0-5 volt
and 4-20 mA devices that do not measure temperatures, C and F can
both be turned off.
Before turning on the power, make sure all wiring connections are
secure. Note that all controls can be adjusted while the power is on
without damaging sensor or electronics, see sections 3.4.2 to 3.4.12.
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3.4.2 Device Selection
Several device types can be connected to the electronics enclosure.
Complete the following procedure to set the electronics to the
appropriate device.
From the temperature/value display, press and hold , press , then
release them both. A display similar to the following figure appears.
Figure 11: Device Selection Display
The “H” will be followed by numbers designating the device type.
Press the and buttons to change the number on the display to
the appropriate head type.
Head types are as follows:
H001 = Raytek GPR Standard Head
H001 = Raytek GPS Head with laser sighting
H003 = Raytek CI3 Head
H004 = Raytek CM Head, 0 – 5 V input
H005 = 4 – 20 mA input, e.g. Raytek TX Head
H006 = Thermocouple input
H007 = 4 – 20 mA input, e.g. Raytek XR Head with emissivity setting
Note that all head types except H003 have additional display
settings.
H001
If H001 is displayed, press the button once to be able to turn the
decimal Off (“0”) or On (“1”). A “d” is displayed on the monitor.
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GP Series Rev. F 10/2011 21
When the decimal is On, it will be positioned at a tenth of a degree
(for example, 888.8). Press the button again to return to the
temperature display.
H003
The sensor attached as H003 has a fixed emissivity and no additional
monitor adjustments are necessary.
H004/H005/H007
If H004, H005, or H007 are displayed, press the button once to turn
the decimal Off or to set the location of the decimal on the display.
Use the following as a guide:
d = 0 Decimal turned off
d = 1 Decimal located at ones position (for example 8888.)
d = 2 Decimal located at tens position (for example 888.8)
d = 3 Decimal located at hundreds position (for example 88.88)
d = 4 Decimal located at thousands position (for example 8.888)
Both H004 and H005 have additional settings as follows:
For H004, press the button again to be able to adjust the 0 V
equivalent temperature value (using the and arrows). Press
once more to adjust the 5 V equivalent temperature value.
H005/H007
For H005/H007, press the button again to be able to adjust the
4 mA equivalent temperature value (using the and arrows).
Press once more to adjust the 20 mA equivalent temperature value.
H006
For H006, press the button once to be able to turn the decimal Off
(“0”) or On (“1”). A “d” is displayed on the monitor. When the
decimal is On, it will be positioned at a tenth of a degree (e.g., 888.8).
Press the button again to be able to select the thermocouple input
type. Use the following as a guide:
TC1 = J-type thermocouple input
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22 Rev. F 10/2011 GP Series
TC2 = K-type thermocouple input
TC3 = E-type thermocouple input
TC4 = N-type thermocouple input
TC5 = R-type thermocouple input
TC6 = S-type thermocouple input
TC7 = T-type thermocouple input
Press the button until the temperature or user-defined value
displays.
H007
H007 is specific for the XR Sensor. The H007 sensor head code has the
following features:
4-20 mA sensor signal input (like the TX, H003)
Set point 2 output is changed from a TTL alarm output to a 0 –
5 V output which is proportional to the emissivity setting
displayed on the GP monitor.
The monitor displays the temperature value based off the 4-20 mA
output of the XR. The 0 – 5 V output of the GPC controls the
emissivity setting of the XR.
3.4.3 Emissivity
Emissivity is a function of infrared sensors and how they measure
temperatures of different materials and surfaces.
Emissivities for H001 can be adjusted from 0.10 to 1.09 (adjustable in
0.01 increments). Note that you cannot change emissivity for device
type H003 (fixed at 0.95) or for H004, H005 and H006, because
emissivity adjustments are not available through the GP monitor for
these device types and thermocouples. For H001, complete the
following procedure to set emissivity.
1. In temperature mode display, press the button until a display
similar to following figure appears. The “E” will be followed by
numbers designating the emissivity.
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GP Series Rev. F 10/2011 23
Figure 12: Emissivity Display
2. Press the and buttons to change the number on the display
to the appropriate emissivity.
3. Press the button until the temperature displays.
3.4.4 Setpoints 1 and 2
Setpoints are preset at the factory for the highest measurement value
but are deactivated by default. To adjust setpoints, complete the
following:
1. In temperature/value display, press the button until a display
similar to the following figure appears. Setpoint 1 shows as “S1”
followed by a number 0, showing that Setpoint 1 is Inactive, or a
number 1, designating active.
Figure 13: Setpoint Display (Showing Setpoint 1 Active)
2. When either S1 or S2 is displayed, press the or buttons to
activate or deactivate the setpoint (a number “1” displays when
the setpoint is active, a number “0” displays when it’s inactive).
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24 Rev. F 10/2011 GP Series
3. Press the button, and the display shows the current alarm
temperature or value (Setpoint value). Use the and arrows
to adjust the alarm value.
4. Press the button again and a display similar to the following
figure appears. If you see a number “1,” it means the Normally
Low setpoint will change state when the target temperature or
value exceeds the alarm value. If a number “0” displays, the
Normally Low setpoint will change state when the target
temperature or value is lower than the setpoint alarm value.
If you see a number “3,” it means the Normally High setpoint will
change state when the target temperature or value exceeds the alarm
value. If a number “2” displays, the Normally High setpoint will
change state when the target temperature or value is lower than the
setpoint alarm value.
Figure 14: Setpoint Alarm (Trigger) Display
Note that the “O” and “L” indicators on the monitor are controlled
by SP1 and SP2. The “L” lights when the input signal has fallen
below either the SP1 or SP2 value and when the trigger level (“b”) is
set to either “0” or “2”. The “O” indicator lights when the input
signal has risen above either the SP1 or SP2 value and when the
trigger level (“b”) is set to either “1” or “3”. The following figures
shows examples of how the setpoints change state when triggered.
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GP Monitor Display = b 0 Trigger signal low, output normally low
GP Monitor Display = b 1 Trigger signal high, output normally low
GP Monitor Display = b 2 Trigger signal low, output normally high
Signal
Signal
Signal
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GP Monitor
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GP Monitor Display = b 3 Trigger signal high, output normally high
Figure 15: Output Examples
5. Press the button once more and a display similar to the
following figure appears. Use the or buttons to adjust the
deadband.
Figure 16: Deadband Display
6. If you have completed adjusting Setpoint 1 parameters, pressing
the button will take you to Setpoint 2. When finished with
Setpoint 2, if used, pressing again takes you to the 4-20 mA
output setup indicator display.
To return to the temperature/value display, press the button until
the temperature/value display appears.
Note:
Signal
Signal
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GP Monitor
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The deadband is the temperature/value band (±) about a setpoint,
wherein an alarm output or relay cannot change state.
3.4.5 Analog 4 - 20 mA Output
Note: The 4 - 20 mA analog output is disabled when the
thermocouple output is active, see section 3.4.10 Thermocouple
Output, page 32.
Complete the following for setting a temperature to correspond to
the 4-20mA analog output:
1. Press the button until the 4 mA output display displays, see
the following figure.
Figure 17: 4 mA Analog Output Display
2. Press the button again, and the current 4 mA temperature
displays.
3. Press the and buttons to adjust the temperature value.
4. Pressing the button again brings up the 20 mA display.
Figure 18: 20 mA Analog Output Display
5. Press the and buttons to adjust the temperature value.
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6. Press the button until the temperature mode is displayed.
3.4.6 Degrees C and F
You can change the temperature display unit from °C to °F, from °F
to °C, or to both off by completing the following steps:
1. Press the button until a “C” shows in the display.
Figure 19: Degrees C Activation Display
2. Pressing the and buttons activates or deactivates °C as a
temperature measurement unit. If you select number “1”, °C is
active; if you select number “0,” it is inactive. See the following
table for setting configurations.
3. Press the button again brings up the degrees F activation
display. To activate or deactivate degrees F, press the and
arrows.
4. Press the button until the temperature mode is displayed.
°C
°F
Function
1 0 °C lit on monitor
0 1 °F lit on monitor
0 0 To disable °C/°F indicators (only for H004 and H005)
1 1 Not available
Table 9: The °C and °F Configurations
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Thermocouple output is available for H004 and H005 only
if either °C or °F is activated!
3.4.7 Signal Processing
The Peak Hold,Valley Hold, and Average times are factory set at 0
seconds and are not activated. If you don’t need to use these signal
processing functions, no adjustments are necessary.
Only one signal processing setting can be active at a time!
To set and activate, complete the following steps:
1. Press and hold the button and press the button and release
them both. The Peak Hold display appears:
Figure 20: Peak Hold Display
2. Press the button again and the display shows the current Peak
Hold value in seconds.
3. Set the display by using the and buttons. Note that “000”
turns off Peak Hold.
4. Press the button again and the Valley Hold display appears.
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Figure 21: Valley Hold Display
5. Press the button once more and the display shows the current
Valley Hold value in seconds.
6. Set the display by using the and buttons. Note that “000”
turns off Valley Hold.
7. Press the button again and the Averaging display appears.
Figure 22: Averaging Display
8. Press the button once more and the display shows the current
Averaging value in seconds.
9. Set the display by using the and buttons. Note that “000”
turns off Averaging.
10. Press the button again until the temperature mode is
displayed.
3.4.8 Ambient Temperature Compensation
Head type H001 only - The ambient temperature compensation is
factory preset as inactive. This value is normal for most applications.
However, in some applications the surrounding ambient temperature
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GP Monitor
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is much higher than the target. If the target has an emissivity less
than 1.0, it will reflect a certain portion of the surrounding energy
and cause an erroneous temperature reading. To avoid this error, set
in the average surrounding temperature and the microprocessor will
automatically compensate for it.
To set T-Ambient, complete the following:
1. Press and hold the button, and press the button, then release
them both. The Peak Hold display appears, see Figure 20.
2. Press the button several times until the Ambient
Compensation indicator displays, as shown in the following
figure. The display shows either a “0” or “1” (default = “0” - Off).
3. You can activate or deactivate Ambient Temperature
Compensation by using the and buttons. A number “1”
means it is active; a number “0” means it is inactive.
Figure 23: Ambient Temperature Compensation Display
4. To adjust the ambient temperature compensation, press the
button once more.
5. Set the value by using the and buttons.
6. Press the button until the temperature/value mode displays.
3.4.9 Display and Analog Output Offset
To adjust and set the Display and Analog Output Offset (applies to
displayed temperature and all analog outputs), complete the
following steps:
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1. Press the button and the button simultaneously then release.
The Peak Hold display appears, see Figure 20.
2. Press the button several times until the Offset indicator
displays:
Figure 24: Offset Indicator Display
3. To adjust the display and output offset, press the button once
more.
4. Set the display by using the and buttons.
5. Press the button until the temperature mode displays.
3.4.10 Thermocouple Output
Thermocouple output is factory preset as inactive. To adjust and set
the type of thermocouple output, complete the following steps:
1. Press and hold the button, and press the button, then release
them both. The Peak Hold display appears, see Figure 20.
2. Press the button several times until the thermocouple output
indicator displays as shown in the following figure:
Figure 25: Thermocouple Output
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GP Monitor
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3. Press the and buttons to change the number on the display
to the appropriate thermocouple output type. Use the following
as a guide:
TC1 = J-type thermocouple output
TC2 = K-type thermocouple output
TC3 = E-type thermocouple output
TC4 = N-type thermocouple output
TC5 = R-type thermocouple output
TC6 = S-type thermocouple output
TC7 = T-type thermocouple output
4. Press the button until the temperature/value mode displays.
Note: Thermocouple output is available for H004 and H005 inputs
only if either °C or °F is activated. The 4 - 20mA analog output is
disabled when the thermocouple output is active.
3.4.11 Lockout Mode
The Lockout Mode protects you from accidental value changes or
from tampering. When you activate lockout, no mode values can be
changed.
To activate Lockout:
Press and hold the button, press the button 3 times, then
release. The letter “L” appears on the display for approximately 3
seconds showing that Lockout has been activated.
To deactivate Lockout:
1. Press the button once to get the emissivity adjustment display.
2. Press the button, the button 3 times, then release. The letter
“E” displays for approximately 3 seconds showing that Lockout
has been deactivated.
3. Press the button until the temperature mode displays.
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3.4.12 Factory Defaults
If you need to reset the GP monitor to its factory default settings, you
can do so by pressing and holding the button and then pressing
the button 3 times.
Parameter
Value
Setting Range
Remarks
Emissivity
0.95
0.1 - 1.09
For 0 - 5 V, 4 - 20 mA and
thermocouple inputs,
emissivity is not functional
Sensing Head/Device
type
H001
H001 - H007
Display Resolution
0
0 - 4
Setpoints (SP1, SP2)
off
According to Sensing
Head/Device type
see section 3.4.4, page
23
Peak hold
0
0-998 s (999 s = ∞)
∞: reset by hardware
Valley hold
0
0-998 s (999 s = ∞)
∞: reset by hardware
Averaging
0
0 – 60 s
Ambient Temperature
Compensation (t-amb)
0
-18 to 1200°C
(0 to 2200°F)
Offset
0
-50 to 50°C
(-99 to 99°F)
Table 10: Factory-set Default Values
3.5 Quick Reference
On the following pages are quick reference charts for setting up the
GP Monitor with sensing head and input devices and for adjusting
the monitor’s normal and advanced functions.
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Make sure the device attached to the monitor is wired
correctly or damage to the monitor and attached units
could occur!
Refer to the appropriate Sensing Head and Input Device wiring
information in section 3.3 Electrical Installation, Seite 11 before
continuing.
For a detailed explanation of each function, refer to section
3.4 Operation, Seite 18.
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Figure 26: Head and Input Setup
Startup display
and
Press
to go to head/input
setup functions
GPR/GPS Head
GPM Head (3 displays)
To temperature display
Turn decimal
on (1) or off (2)
Turn decimal
on (1) or off (2)
Detektor Calibration: „D“ Value
Ambient Calibration: „R“ Value
To temperature display
CI3 Head
To temperature display
= Cycle through displays
= Cycle through head and input displays
= Adjust values
0 - 5 V Input (3 displays)
Adjust decimal
position (or off)
Adjust 0 V equivalent value
Adjust 5 V equivalent value
To temperature display
4-20 mA Input (3 displays)
Adjust decimal
position (or off)
Adjust 4 mA equivalent
Adjust 20 mA equivalent
To temperature display
Thermocouple Input (2 displays)
Turn decimal
on (1) or off (2)
To temperature display
Select thermocouple type
Back to
display 2
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Figure 27: Normal Functions
4 mA output range (2 displays)
20 mA output range (2 displays)
Activate °C or °F (2 displays)
Back to display 1
= Cycle through displays
= Adjust values
Normal Operation display
Adjust Emissivity
Activate Setpoint 1 (4 displays)
Activate Setpoint 2 (4 displays)
Emissivity not
adjustable for
H003, H004,
H005, H006
4/20 mA outputs
disabled if
thermocouple
output enabled
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GP Monitor
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Figure 28: Advanced Functions
Normal Operation
and
Press
for advanced funtions
Peak Hold Indicator
(2 displays)
Back to display 1
= Cycle through displays
= Adjust values
Valley Hold Indicator
(2 displays)
Averaging Indicator
(2 displays)
Ambient Compensation Indicator
(3 displays)
Offset Indicator (2 displays)
Thermocouple Output
(2 displays)
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Installation of Sensing Heads
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4 Installation of Sensing Heads
4.1 Raytek Sensing Heads
This section describes how to connect Raytek infrared sensing heads
to the GP monitor. Raytek sensing heads include:
GPR sensing head (head type H001)
GPS sensing head with laser (head type H001)
CI3 sensor (head type H003)
TX/SX sensor using 4 - 20 mA connection (head type H005)
XR sensor using 4 - 20 mA connection (head type H007)
Model
Temperatur
e range
Optical Resolution
GPR (SF)
-18 to 538°C
(-0 to 1000°F)
35 : 1
GPR (CF)
-18 to 538°C
(-0 to 1000°F)
30 : 1
GPS (SF)
-18 to 538°C
(-0 to 1000°F)
50 : 1
GPS (CF)
-18 to 538°C
(-0 to 1000°F)
45 : 1
SF = Standard Focus, CF = Close Focus
Table 11: GP Sensing Heads
For further information for setting up the sensing heads see section
3.4.2 Device Selection, page 20.
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Installation of Sensing Heads
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4.2 Preparation
Sensor location depends on the application. Before deciding on a
location, you need to be aware of the ambient temperature of the
location, the atmospheric quality of the location, and the possible
electromagnetic interference in that location. If you plan to use air
purging, you need to have an air connection available. Wiring and
conduit runs must be considered
4.3 Ambient Temperature
The GP Monitor is designed for measurements in ambient
temperatures between 0 to 50°C (32 to 122°F). Operation of these
units outside of specified ambient temperatures is not recommended,
and accuracy cannot be guaranteed.
The GPR/GPS sensing heads operate in ambient temperatures of 0 to
65°C (32 to 150°F). (Laser operates from 0 to 50°C (32 to 122°F.) In
ambient conditions above 65°C (150°F), an optional air/water-cooled
housing is available, which extends the ambient operating range to
120°C (250°F) with air cooling or 177°C (350°F) with water cooling.
4.4 Distance to Object
The desired spot size on the target will determine the maximum
measurement distance and the necessary focus length of the optical
module. To avoid erroneous readings the target spot size must
contain the entire field of view of the sensor. Consequently, the
sensor must be positioned so the field of view is the same as or
smaller than the desired target size.
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Installation of Sensing Heads
GP Series Rev. F 10/2011 41
Figure 29: Proper Sensor Placement
4.5 Atmospheric Quality
It is important to keep the lens clean at all times. A clean lens can
prevent erroneous readings and possible lens damage. An Air Purge
Collar is available, and recommended, for all models to protect the
lens from smoke, fumes, dust, and other contaminants.
Sensor
best critical incorrect
Target greater
than spot size
Target equal to
spot size
Target smaller
than spot size
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4.6 Electrical Interference
To minimize electrical or electromagnetic interference or “noise,” be
aware of the following:
Mount the sensor as far away as possible from potential
sources of electrical interference such as motorized equipment
producing large step load changes.
With a GP sensing head, use solid or flexible conduit between
the head and electronics box. Check continuity to ensure a
good connection of the conduit between the sensor head and
electronics box. For a good connection, the ends of the conduit
should make metal to metal contact with the sensor head and
the electronics box.
Use shielded wire for all input and output connections.
Connect the shield as described in the sensing head tables in
sections 3.3.2 and 3.3.3 page 13 ff. Make sure the shield wire in
the sensor cable is earth grounded.
For additional protection, use conduit for the AC power lines
and any external connections. Solid conduit is better than
flexible conduit in high noise environments.
Do not run AC power for other equipment in the same conduit.
4.7 Mechanical Installation
4.7.1 GPR/GPS Sensing Head
After you complete preparations, fasten the supplied mounting
bracket, or other mounting device, to the area you have chosen. You
can fasten the sensor with the supplied nut either in the front, by the
lens, or in the back by the cable connector. Make sure the nut is tight,
but do not over tighten.
For the GPR, the standard 4 m (13ft) cable is an accessory and comes
with a 5-pin DIN connector on one end and bare wires on the other.
Plug the DIN connector into the sensing head, and run the wire to the
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Installation of Sensing Heads
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monitor’s connectors. The GPS head uses a 7-pin DIN connector. Be
sure to allow space for mounting the GPS laser switch box.
If you are using a conduit adapter and conduit for the wiring, install
the conduit adapter on the sensor end of the conduit, then run the
wire through it. You might need to position and tighten the
mounting bracket in place after attaching the DIN connector to the
sensing head and screwing the sensing head into the conduit adapter.
Note that a mounting bracket may not be necessary if using rigid
conduit.
4.8 Electrical Installation
For proper operation, make sure all wiring is installed correctly and
the connections are tight. If strain relief is required, use standard
conduit fittings. For proper operation, this cable must be free of
splices and connected to the monitor’s terminals exactly as indicated
below.
For more information on how to wire the sensor you can find in
section 3.3 Electrical Installation, page 11.
4.9 Aiming the Sensing Head
All sensing heads that can be attached to the GP monitor are aimed
using the same technique, which is to peak the sensor to its
maximum signal. (The GPS has laser aiming.) To do this, all
connections must be secure and power applied to the monitor. If a
temperature does not display, press the button until it does.
To aim the sensor, complete the following:
1. Slightly loosen the mounting bracket’s nuts.
2. Point the sensor toward the target.
3. Move it around until the target’s temperature displays on the
monitor.
4. Secure the mounting bracket.
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5 GPR/GPS Sensing Head
5.1 GPR Head
The GPR is available in Standard Focus and Close Focus models.
The sensor is supplied with a fixed bracket and mounting nut. It can
also be mounted using a customer-supplied bracket or pipe adapter
or other accessories.
Use the following measurements when determining space
requirements for installation.
Figure 30: Dimensions for the GPR Head
Note:
All sensors and accessories are supplied with 3.8 cm (1.5”) 20 UN
machine threads and must not be used with standard pipe fittings. A
pipe adapter is available for this purpose, if required. Make sure the
inner diameter of any pipe or tube extension is not so small that it
interferes with the optical field of view of the sensing head model
being used.
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5.2 GPS Laser Sighting Head
The laser sighting head allows fast and precise aiming at small and
quick moving targets. The laser is specially aligned with the lens to
provide accurate, non-parallax pinpointing of targets. Press the on/off
switch at the laser switching box, and a small, bright red laser beam
shows you the target center. The laser dot indicates the center of the
target, not the size of the spot being measured. (To determine spot
size, refer optical charts in section 5.3.1 Optical Parameter, page 52.)
The laser is Class 2 with an output power less than 1 mW and an
output wavelength of 630-670 nm. The laser has an operating range
up to 30 m (100 ft), depending on ambient light level. The laser
complies with FDA Radiation Performance Standards, 21 CFR,
subchapter J, and meets IEC 825, Class 2 specifications.
Note: The laser automatically turns off after approximately 10
minutes of use.
Figure 31: Dimensions for the GPS Head
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Figure 32: GPS Head and Laser Switching Box
Figure 33: Laser Switching Box
WARNUNG!
Avoid exposure to laser light.
Eye damage can result. Use
extreme caution when
operating. Never point at a
person.
Be aware of reflections!
GPS Head Laser Switching Box
Laser On/Off
1. Cap
2. Compression fitting
3. Rubber washer
4. Metal washer
5. Cable shield
6. Wires
7. Sensor head cable
Sensor head cable
4 m (13 ft)
Sensor head wires (left to right):
red, blue, green, white, yellow
Monitor wires (left to right):
white, green, black, red
Monitor cable
8 m (26 ft)
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Figure 34: Fixed Mounting Bracket
5.1 Options
Options are those items that are factory installed and must be
ordered with base model units
ISO Calibration Certificate, based on NIST/DKD certified
probes (GPR: XXXGPCERT, GPS: XXXGPSCERT)
Air/water-cooled housing (...W)
5.1.1 Air/Water-cooled Housing (GPR/GPS)
The air/water-cooled housing option allows the sensor to be used in
ambient temperatures up to 120°C (250°F) for air-cooled and 177°C
(350°F) for water-cooled. It is supplied with two 1/8” NPT brass
fittings. Air flow should be 25°C (77°F) at 2.8 liters/sec (0.74
gallon/sec) with a pressure drop across the housing of 0.63 kg/cm²
(9 PSI). Water flow should be approximately 2 liters (0.5 gallons) per
minute. Water temperature should be 10-27°C (50-80°F) for efficient
cooling. Using chilled water below 10°C (50°F) is not recommended.
To avoid condensation, it is recommended to use the Air Purge
Collar with the Water Cooled Housing.
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Figure 35: GPR Head with Air/Water-cooled Housing
Figure 36: GPS Head with Air/Water-cooled Housing
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GP Series Rev. F 10/2011 49
5.2 Zubehör
Accessories include items that may be ordered at any time and added
on-site:
Adjustable Mounting Bracket (XXXTXXACAB)
Air Purge Collar (XXXTXXACAP)
90° Umlenkspiegel (XXXTXXACRA)
Visierhilfe (nur GPR) (XXXTXXACSV)
Schutzrohradapter (XXXTXXACCA)
Rohradapter (XXXTXXACPA)
Starrer Montagewinkel (im Lieferumfang) (XXXTXXACFB)
Montagemutter, (im Lieferumfang) (XXXTXXACMN)
Kabel: 4 m
Hochtemperaturkabel: 8 m oder 15 m
5.2.1 Adjustable Mounting Bracket
An adjustable mounting bracket is available if you require a sensor
that can be aimed at different targets from the same mounted
position.
Figure 37: Adjustable Mounting Bracket
5.2.2 Air Purge Collar
The Air Purge Collar is used to keep dust, moisture, airborne
particles, and vapors away from the lens. It can be installed before or
after the mounting bracket. It must be screwed in fully. Air flows into
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50 Rev. F 10/2011 GP Series
the 1/8” NPT brass fitting and out the front aperture. Air flow should
be a maximum of 0.5-1.5 l/s (1-3 cfm). Clean or “instrument” air is
recommended to avoid contaminants from settling on the lens.
Figure 38: Air Purge Collar
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5.2.3 Right Angle Mirror
The Right Angle Mirror is used to obtain a perpendicular view of the
object. It is often used when space is limited or when you need to
avoid excessive radiation to the sensor. It must be installed after the
bracket or after the Air Purge Collar (if used) and screwed in fully. In
dusty or contaminated environments, air purging is required to keep
the first surface mirror clean. If used in conjunction with the Air
Purge Collar, both the Right Angle Mirror and the Air Purge Collar
must be air purged.
Figure 39: Right Angle Mirror
When using the Right Angle Mirror, adjust the emissivity settings
downward by 5%. For example, for an object with an emissivity of
0.95 use 0.9; for an object with 0.8 use 0.76; for 0.65 use 0.62. This
correction accounts for energy losses in the mirror.
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5.2.4 Sighting Viewer (GPR)
The Sighting Viewer is used to aid in the alignment of the sensor. It
can be used when an object is small and far from the sensor. It can
also be used when direct in-line sighting is difficult. It can be used
both with and without the Air Purge Collar, but not with the Right
Angle Mirror. For best results, first secure the sensor to the bracket
using the mounting nut or Air Purge Collar and then screw on the
Sighting Viewer Tool. Next, position and secure the bracket. Be sure
to remove the Sighting Viewer when alignment is complete.
Figure 40: Sighting Viewer for GPR Head
5.3 Technical Data
5.3.1 Optical Parameter
The optical charts indicate the nominal target spot diameter at any
given distance from the sensing head. Information in the top half of
each diagram is in inches or feet, the bottom half is in metric units.
All optical diagrams within this manual assume 90% energy.
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Figure 41: GPR Standard Focus Optics
Figure 42: GPR Close Focus Optics
Spot
diameter S
[mm]
Distance D: Sensor to Object [mm]
Spot
Distance D: Sensor to Object [in]
Spot
diameter S
[mm]
Distance D: Sensor to Object [mm]
Spot
Distance D: Sensor to Object [in]
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54 Rev. F 10/2011 GP Series
Figure 43: GPS Standard Focus Optics
Figure 44: GPS Close Focus Optics
Spot
diameter S
[mm]
Distance D: Sensor to Object [mm]
Spot
Distance D: Sensor to Object [in]
Spot
diameter S
[mm]
Distance D: Sensor to Object [mm]
Spot
diameter S
[in]
Distance D: Sensor to Object [in]
Page 62
GPR/GPS Sensing Head
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5.3.2 Measurement Specifications
Temperature range: -18 to 538°C
Spectral response: 8 to 14 µm
Accuracy: ±1% of reading or ±1°C (2°F),
(with GP monitor) whichever is greater
at 23°C ± 5°C (73 ± 9°F) ambient
Repeatability: ±0,5% of reading or ±1°C (2°F),
whichever is greater
at 23°C ± 5°C (73 ± 9°F) ambient
Response Time: 300 ms (95% response, 4/20mA output)
Temperature Coefficient: 0.15°C per °C (0.15°F per °F)
5.3.3 Environmental Specifications
Dimensions: see sections 5.1 and 5.2, page 44 f.
Weight: GPR: 275 g (9.7 oz), GPS: 290 g (10 oz)
Environmental Rating: NEMA-4 (IEC 529, IP 65) rated with
conduit adapter and compression fitting
(which prevents liquid from entering
through the connector)
Ambient Operating:
Head: GPR: 0 to 65°C
GPS: 0 to 65°C (laser switch off 50°C/122°F)
with air cooling: 0 to 120°C (32 to 248°F)
with water cooling: 0 to 177°C (32 to 351°F)
Storage temperature: -30 to 65°C (-22 to 149°F)
Relative Humidity: 10-95%, non-condensing
Vibration: MIL-STD-810D (IEC 68-2-6): 3G’s, 11 to
200Hz, any axis
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Mechanical Shock: MIL-STD-810D (IEC 68-2-27): 50G’s,
11msec duration, any axis
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Maintenance
GP Series Rev. F 10/2011 57
6 Maintenance
Our customer service representatives are always at your disposal for
questions regarding application assistance, calibration, repair, and
solutions to specific problems. Our Service Department should be
contacted before returning any equipment to us. In many cases,
problems can be solved over the telephone. The following table lists
common symptoms, their causes, and possible solutions.
Symptom
Probable Cause
Solution
No output
No power to monitor
Check power supply
Erroneous output
Wrong output range
Correct Lo/Hi output
setting
Erroneous Temperature
Faulty sensor cable
Verify cable integrity
Erroneous Temperature
Field of view obstructed
Remove obstruction
Erroneous Temperature
Wrong signal processing
Correct peak/valley setting
Relays "chatter"
Deadband too narrow
Correct deadband setting
Table 12: Troubleshooting
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58 Rev. F 10/2011 GP Series
6.1 Fail-Safe Operation
The Fail-Safe system is designed to alert the operator and provide a
safe output in case of any system failure. Basically, it is designed to
shutdown the process in the event of a set-up error or a failure in the
sensor head or control electronics.
When an error or failure does occur, the display indicates the
possible failure area, and the output circuits automatically adjust to
their lowest or highest preset level, see the following table.
Display
(flashing)
Condition
mA Output
Thermocouple Output
E111
Over instrument input range
20 mA
High value of input range
E000
Under instrument input range
4 mA
Low value of input range
E444
Head disconnect
4 mA
Low value of input range
E555
Head ambient temperature
GPR/GPS: >65°C (150°F)
4 mA
Low value of input range
E666
Monitor ambient temperature
>50°C (120°F) or <0°C (32°F)
4 mA
Low value of input range
Table 13: Fail-Safe Error Codes
Note:
With either input type H003 or H004 the under instrument input
range will display low scale for the input device, and the output will
be 4 mA.
6.2 Cleaning the Lens
Keep the lens clean at all times. Any foreign matter on the lens will
affect measurement accuracy. However, care should be taken when
cleaning the lens. To clean the lens, do the following:
Lightly blow off loose particles.
Gently brush off remaining particles with a soft camel hair
brush.
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Maintenance
GP Series Rev. F 10/2011 59
Clean remaining “dirt” using a cotton swab dampened in
distilled water. Do not scratch the surface.
For finger prints or other grease, use any of the following:
Denatured alcohol
Ethanol
Kodak
®
lens cleaner
Apply one of the above to the lens. Wipe gently with a soft, clean
cloth until you see colors on the surface, then allow to air dry. Do not
wipe the surface dry, this may scratch the surface.
If silicones (used in hand creams) get on the lens, gently wipe the
surface with Hexane. Allow to air dry.
Do not use ammonia or cleaners with ammonia on
the lens, this may result in permanent damage to the
lens’ surface.
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Appendix
60 Rev. F 10/2011 GP Series
7 Appendix
7.1 Determination of Emissivity
Emissivity is a measure of an object’s ability to absorb and emit
infrared energy. It can have a value between 0 and 1.0. For example a
mirror has an emissivity of < 0.1, while the so-called “Blackbody“
reaches an emissivity value of 1.0. If a higher than actual emissivity
value is set, the output will read low, provided the target
temperature is above its ambient temperature. For example, if you
have set 0.95 and the actual emissivity is 0.9, the temperature reading
will be lower than the true temperature.
An object’s emissivity can be determined by one of the following
methods:
1. Determine the actual temperature of the material using an RTD
(PT100), a thermocouple, or any other suitable contact temperature
method. Next, measure the object’s temperature and adjust
emissivity setting until the correct temperature value is reached.
This is the correct emissivity for the measured material.
2. For relatively low temperatures (up to 260°C / 500°F) place a plastic
sticker (e.g. XXXRPMACED) on the object to be measured. This
sticker should be large enough to cover the target spot. Next,
measure the sticker’s temperature using an emissivity setting of
0.95. Finally, measure the temperature of an adjacent area on the
object and adjust the emissivity setting until the same temperature
is reached. This is the correct emissivity for the measured material.
3. If possible, apply flat black paint to a portion of the surface of the
object. The emissivity of the paint is 0.95. Next, measure the
temperature of the painted area using an emissivity setting of 0.95.
Finally, measure the temperature of an adjacent area on the object
and adjust the emissivity until the same temperature is reached.
This is the correct emissivity for the measured material.
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Appendix
GP Series Rev. F 10/2011 61
7.2 Typical Emissivity Values
The following table provides a brief reference guide for determining
emissivity and can be used when one of the above methods is not
practical. Emissivity values shown in the table are only approximate,
since several parameters may affect the emissivity of a material.
These include the following:
1. Temperature
2. Angle of measurement
3. Geometry (plane, concave, convex)
4. Thickness
5. Surface quality (polished, rough, oxidized, sandblasted)
6. Spectral range of measurement
7. Transmission (e.g. thin films plastics)
Page 69
Appendix
62 Rev. F 10/2011 GP Series
Metals
Emissivity
Aluminum
Unoxidized
0,02-0,1
Oxidized
0,2-0,4
Alloy A3003, Oxidized
0,3
Roughened
0,1-0,3
Lead rough
0,4
Iron
Oxidized
0,5-0,9
Unoxidized
0,05-0,2
Rusted
0,5-0,7
Iron, Cast
Oxidized
0,6-0,95
Unoxidized
0,2
Iron, Wrought
dull
0,2
Copper
Polished
0,03
Roughened
0,05-0,1
Oxidized
0,4-0,8
Haynes alloy
0,3-0,8
Inconel
Oxidized
0,7-0,95
Sandblasted
0,3-0,6
Brass
burnished
0,3
Oxidized
0,5
Molybdän
Oxidized
0,2-0,6
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Appendix
GP Series Rev. F 10/2011 63
Metal
Emissivity
Nickel Oxidized
0,2-0,5
Electrolytic
0,05-0,15
Platinum
Black
0,9
Steel Cold-rolled
0,7-0,9
Ground sheet
0,4-0,6
Polished sheet
0,1
Oxidized
0,7-0,9
Stainless
0,1-0,8
Titanium
Oxidized
0,5-0,6
Table 1: Typical Emissivity Values for Metals
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Appendix
64 Rev. F 10/2011 GP Series
Non-Metal
Emissivity
Asbestos
0,95
Asphalt
0,95
Basalt
0,7
Concrete
0,95
Ice
0,98
Soil
0,9-0,98
Paint (non-al.)
0,9-0,95
Gypsum
0,8-0,95
Glass Plate
0,85
Rubber
0,95
Wood
0,9-0,95
Limestone
0,98
Carborundum
0,9
Ceramic
0,95
Gravel
0,95
Carbon Unoxidized
0,8-0,9
Graphite
0,7-0,8
Paper
0,95
Plastic (thicker than 500 µm)
0,95
Cloth
0,95
Sand
0,9
Snow
0,9
Clay
0,95
Water
0,93
Table 2: Typical Emissivity Values for Non-Metals
Page 72
Notes
GP Series Rev. F 10/2011 65
8 Notes
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