Kahn Optisure Remote User manual

Optisure Remote
Chilled Mirror Hygrometer
User’s Manual
March 2018

Optisure Remote

Optisure Remote User’s Manual
Kahn Instruments iii
1 INTRODUCTION ................................................................................................1
2 INSTALLATION ..................................................................................................2
2.1 Safety................................................................................................................ 2
2.2 Unpacking the Instrument................................................................................... 2
2.3 Operating Requirements ..................................................................................... 3
2.3.1 Environmental Requirements ......................................................................... 3
2.3.2 Electrical Requirements ................................................................................. 3
2.4 Exterior Layout................................................................................................... 3
2.4.1 Front Panel................................................................................................... 3
2.4.2 Rear Panel.................................................................................................... 4
2.5 Rear Panel Connections ...................................................................................... 6
2.5.1 Power Supply Input....................................................................................... 6
2.5.2 Analog Output Connections............................................................................ 7
2.5.3 Alarm Output Connections ............................................................................. 8
2.5.4 Dew-Point Sensor Connection ...................................................................... 10
2.5.5 Remote PRT Probe ..................................................................................... 10
2.5.6 USB Communications Port Connector............................................................ 11
2.5.7 Ethernet Port (Optional) .............................................................................. 11
2.5.8 RS232/485 Port (Optional)........................................................................... 12
2.5.9 Remote Pressure Transducer (Optional) ........................................................ 13
3 USER INTERFACE ............................................................................................14
3.1 Main Display .................................................................................................... 14
3.1.1 Main Screen................................................................................................ 14
4.1 Operating Cycle................................................................................................ 22
4.2 Operating Guide ............................................................................................... 23
4.2.1 Description ................................................................................................. 23
4.2.2 Operating Practice....................................................................................... 23
4.4 First Time Operation......................................................................................... 29
4.5 Operational Functions ....................................................................................... 29
4.5.1 DCC Function.............................................................................................. 29
4.5.2 MAXCOOL Function ..................................................................................... 29
4.5.3 Frost Assurance Technology (FAST) .............................................................. 30
4.5.4 STANDBY Mode........................................................................................... 30
4.5.5 Parameter Conversions & Pressure Compensation ......................................... 30
4.5.6 Data Logging.............................................................................................. 30
4.5.7 Minimum measurable dew points ................................................................. 31
5 MAINTENANCE................................................................................................32
5.1 Safety.............................................................................................................. 32
5.2 Fuse Replacement ........................................................................................... 32
5.3 Sensor Mirror Cleaning...................................................................................... 33
6 CALIBRATION..................................................................................................34
6.1 Traceability ...................................................................................................... 34
Contents
Safety ................................................................................................................................ v
Electrical Safety ........................................................................................................... v
Pressure Safety............................................................................................................ v
Repair ........................................................................................................................ v
Calibration................................................................................................................... v
Abbreviations......................................................................................................................vi
Warnings ............................................................................................................................vi

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iv March 2018
Tables
Table 1 Front Panel .................................................................................................4
Table 2 Rear Panel Controls .....................................................................................5
Table 3 Main Screen Layout ................................................................................... 15
Table 4 Operational Status Display .........................................................................17
Table 5 Sensor Status Display ................................................................................17
Table 6 DCC Menu ................................................................................................18
Table 7 Logging Menu ...........................................................................................19
Table 8 Outputs Menu ...........................................................................................20
Table 9 Alarm Menu ..............................................................................................20
Table 10 Display Menu ............................................................................................21
Table 11 Network Settings.......................................................................................21
Table 12 Calculated Parameters ...............................................................................30
Appendices
Appendix A Technical Specications..............................................................................35
A.1 Dimensions .................................................................................38
Appendix B Application Software..................................................................................39
Figures
Figure 1 Front Panel ................................................................................................3
Figure 2 Rear Panel .................................................................................................4
Figure 3 Power Supply Input ....................................................................................6
Figure 4 Analog Output Connectors ..........................................................................7
Figure 5 Alarm Output Connectors............................................................................9
Figure 6 Dew-Point Sensor Connection....................................................................10
Figure 8 USB Port Connection.................................................................................11
Figure 9 Ethernet Port ...........................................................................................11
Figure 10 Remote Pressure Transducer Connection....................................................13
Figure 11 Main Screen.............................................................................................14
Figure 12 Main Screen Layout ..................................................................................14
Figure 13 Menu Structure ........................................................................................16
Figure 14 DCC Screen..............................................................................................17
Figure 15 Logging Screen ........................................................................................18
Figure 16 Outputs Screen ........................................................................................19
Figure 17 Alarm Screen ...........................................................................................20
Figure 18 Network settings ......................................................................................21
Figure 19 Typical Operating Cycle.............................................................................22
Figure 20 Room Measurement Example ....................................................................24
Figure 21 Sample Block ...........................................................................................25
Figure 22 Material permeability comparison...............................................................26
Figure 23 Formation of condensation........................................................................27
Figure 24 Miniumum Measurable Dew Points.............................................................31
Figure 25 Power Supply Fuse Replacement ...............................................................32
Figure 26 Sensor Mirror Cleaning..............................................................................33
Figure 27 Typical Calibration Certicate.....................................................................34
Figure 28 Optisure Remote Dimensions.....................................................................38
Figure 29 Sensor Dimensions ...................................................................................38

Optisure Remote User’s Manual
Kahn Instruments v
Safety
The manufacturer has designed this equipment to be safe when operated using the procedures
detailed in this manual. The user must not use this equipment for any other purpose than that
stated. Do not apply values greater than the maximum value stated.
This manual contains operating and safety instructions, which must be followed to insure the safe
operation and to maintain the equipment in a safe condition. The safety instructions are either
warnings or cautions issued to protect the user and the equipment from injury or damage. Use
qualied personnel and good engineering practice for all procedures in this manual.
Electrical Safety
The instrument is designed to be completely safe when used with options and accessories supplied
by the manufacturer for use with the instrument. The input power supply voltage limits are 85 to
264 V AC, 47/63 Hz. Refer to Appendix A - Technical Specications.
Pressure Safety
DO NOT permit pressures greater than the safe working pressure to be applied to the sensor. The
specied safe working pressure is 290 psig (20 barg) or 3625psig (250barg) for the high pressure
version. Refer to Appendix A - Technical Specications.
Application of gas pressures higher than the specied maximum will result in potential damage
and may render the instrument unsafe and in a condition of incorrect functionality. Only personnel
trained in the safe handling of high pressure gases should be allowed to operate this instrument.
Refer to Appendix A - Technical Specications.
Repair
The instrument must be repaired by the manufacturer. Please contact Kahn Instruments at parts.
[email protected].
Calibration
The recommended calibration interval for the Optisure Remote is one year, unless otherwise specied
by Kahn Instruments. The instrument should be returned to Kahn (please contact parts.service@
kahn.com).

Optisure Remote User’s Manual
vi March 2018
Abbreviations
The following abbreviations are used in this manual:
DCC Dynamic Contamination Correction
FAST Frost Assurance System Technology
MAXCOOL Maximum Sensor Cooling
AC alternating current
atm pressure unit (atmosphere)
bar pressure unit (=100 kP or 0.987 atm)
°C degrees Celsius
°F degrees Fahrenheit
COM common
DC direct current
dp dew point
ENT enter (select)
EU European Union
ft foot (feet)
g/kg grams per kilogram
g/m3grams per cubic meter
HMI Human Machine Interface
Hz Hertz
IEC International Electrotechnical Commission
in inch(es)
Nl/min normal liters per minute
lb pound
mA milliampere
max maximum
min minute(s)
mV millivolt(s)
N/C normally closed
N/O normally open
No number
ppmVparts per million (by volume)
ppmWparts per million (by weight)
PRT Platinum resistance thermometer (typically type Pt100)
psig pound(s) per square inch (gauge)
rh relative humidity
RTU Remote Terminal Unit
scfh standard cubic feet per hour
SD card storage device card (memory card for storing datalog les)
sec second(s)
temp temperature
USB Universal Serial Bus
V Volts
Warnings
The following general warning listed below is applicable to this instrument. It is repeated
in the text in the appropriate locations.
!
Where this hazard warning symbol appears in the following
sections, it is used to indicate areas where potentially
hazardous operations need to be carried out.

Optisure Remote User’s Manual
Kahn Instruments vii
NOTES

Optisure Remote User’s Manual
Kahn Instruments 1
INTRODUCTION
1 INTRODUCTION
The Optisure Remote Hygrometer is a high precision instrument used for the measurement
of moisture content in air and other gases. Relative humidity and other calculated
parameters based on dew point, pressure and temperature of the sample gas can also
be displayed. Two pressure options are available: low pressure, allowing measurements
at a maximum of 290psig (20barg), and high pressure, allowing measurements at a
maximum of 3625psig (250barg).
The Optisure Remote employs an advanced chilled mirror technique which enables it to
directly measure dew points in the range -40 to +194°F (-40 to +90°C ); -40 to +248°F
(-40 to +120°C) for the PEEK and Climatic sensor version.

Optisure Remote User’s Manual
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INSTALLATION
2 INSTALLATION
2.1 Safety
!
It is essential that the installation of the electrical and gas
connections to this instrument be undertaken by competent
personnel.
2.2 Unpacking the Instrument
Open the box and unpack carefully. Save all the packing materials for the purpose of
returning the instrument for re-calibration or any warranty claims.
The accessories box should contain the following items:
• Traceable calibration certicate
• SD memory storage card
• Optics cleaning kit
• USB communications cable
• Remote Pt100 temperature probe
• IEC power cable
• Sensor cable
• Dew-point sensor
• Pressure transducer and cable (optional)
If there are any shortages please notify Kahn Instruments immediately
([email protected]).

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Kahn Instruments 3
INSTALLATION
2.3 Operating Requirements
2.3.1 Environmental Requirements
The operational range of the Optisure Remote sensor is dependant on the temperature of
the environment in which it is installed. The sensor is able to measure dew points down
to 90°F (60°C) below ambient temperature, and anywhere up to (but not including) the
point of condensation. At higher ambient temperatures the cooling ability of the sensor
may be slightly reduced.
2.3.2 Electrical Requirements
The Optisure Remote requires the following electrical supply:
• 85 to 264 V AC, 47/63 Hz, 100 VA max
• Alarm outputs comprise two sets of changeover relay contacts, one set for
a PROCESS alarm and one set for an INSTRUMENT FAULT. Both sets of
contacts are rated at 24 V, 1A. NOTE: This rating must not be exceeded.
2.4 Exterior Layout
The controls, indicators and connectors associated with the Optisure Remote are located
on the front and rear panels of the instrument.
2.4.1 Front Panel
Touch Screen Display
SD Slot
Figure 1 Front Panel

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INSTALLATION
No. Name Description
1Touch Screen
Display
Displays measured values and enables the user to control the
operation of the instrument. See section 3 for information about
the touch screen and menu system.
2 SD Slot Takes an SD card used to store logged data. See section 3.2.2
for further information on how to use data logging.
Table 1 Front Panel
2.4.2 Rear Panel
12
8
4
5
6
7 3
9
Figure 2 Rear Panel

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INSTALLATION
No. Name Description
1 Power Socket
Universal power input 85 to 264 V AC, 47/63 Hz
Fuse - T2.5A, Glass, 20 x 5mm
Features integrated power ON/OFF switch
2 Sensor Connector Used for connecting the chilled mirror sensor to the
instrument via the sensor cable.
3Pressure Transducer
Connector
Used for connecting an external pressure transducer to
the instrument.
4USB Communications
Port
Used for connection to an external computer system for
running application software (optional).
5
Ethernet
Communication Port
(Optional)
Used for connection to a network to access measured
parameters and control the instrument remotely.
6
RS232/RS485
Communication Port
(Optional)
Used for connection to a computer system or DCS to
access measured parameters and control the instrument
remotely.
7 Alarms
Socket for Process and Fault alarm outputs. Each alarm
has one set of potential free, changeover, relay contacts,
common (COM), normally closed (N/C) and normally
open (N/O).
The Process alarm can be congured to operate at a
specied level on any of the measured or calculated
parameters. Refer to Section 3.2.4.
8Remote Temperature
Probe
6-Pin Lemo socket for connection of remote Pt100
temperature probe.
9Analog Output
Connector
Three 2-wire output channels, CH1, CH2 and CH3, each
of which may be congured to give either a 0-20 mA,
or a 4-20 mA current loop output or a 0 to 1000 mV
voltage signal representing any one of the measured or
calculated output parameters selected.
Spans for each signal output are separately congurable.
Refer to Section 3.2.3.
Table 2 Rear Panel Controls

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INSTALLATION
2.5 Rear Panel Connections
!
These tasks should be undertaken only by competent
personnel.
DANGER
Electric
Shock Risk
All the connections to the rear panel are electrical
connections. Exercise due caution, particularly when
connecting to external alarm circuits which could be at high
potential.
Connections to the rear panel of the instrument are explained in the following sections.
2.5.1 Power Supply Input
The AC power supply is a push t into the power input socket as shown in Figure 3.
Figure 3 Power Supply Input
The method of connection is as follows:
1. Insure that both ends of the power cable are potential free, i.e. not
connected to an AC power supply.
2. Check that the ON/OFF switch on the power supply connector is switched
to OFF.
3. Push the IEC connector rmly into the power input socket.
4. Connect the free end of the power cable to a suitable AC power supply
source (voltage range 85 to 264 V AC, 47/63 Hz) and switch on the AC
supply. The instrument may then be switched on, as required, by the
power ON/OFF switch.

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Kahn Instruments 7
INSTALLATION
2.5.2 Analog Output Connections
The three analog outputs can be congured to represent any of the directly measured
or calculated output parameters. They are provided as 2-wire signals from a 6-way
connector located on the rear panel of the instrument.
Each of these outputs can be set-up as either a current loop signal (4-20 mA or 0-20
mA) or alternatively, as a 0 to 1 V voltage signal. The conguration of these outputs,
i.e. parameter represented, output type (current loop or voltage) and upper/lower span
levels are set up via the SETUP Menu (refer to Section 3.5.4).
These signals may be used to control external systems. During a DCC cycle, and for
the hold period following a DCC cycle, they are held at the level that they were at
immediately prior to the start of DCC. When the dew-point measurement is stable, or
if the maximum hold period has expired, they are released and will track the selected
parameter throughout the measurement cycle.
By default the analog outputs are setup as 4-20 mA current loop, with the following
ranges:
Dew point -40 to +176°F (-40 to +80°C)
Temperature -58 to +122°F (-50 to +50°C)
% Relative Humidity 0 to 100%
NOTE: The analog outputs are only active during the MEASURE phase. During
DCC cycles they will be held at the last measured value.
The three analog output ports connections are made via a single 6-way, push t connector
block as shown in Figure 4 . All outputs are 2-wire, positive-going signals referenced to
a common 0 V line. To differentiate between the outputs it is recommended that a black
lead be used for each of the COM (common) lines and a separate color for each of the
positive lines.
Figure 4 Analog Output Connectors

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INSTALLATION
For each output:
1. Remove the terminal block tted into the analog output socket.
2. Strip back the wire for the common (black) connection to the CH1 output,
exposing approximately 0.25" (6mm) wire insert the wire into the COM1
terminal way and screw into the block. Do not overtighten the screw.
3. Strip back the wire for the signal (e.g. red) connection to the OP1 output,
exposing approximately 0.25" (6mm) wire, insert the wire into the OP1
terminal way and screw into the block. Do not overtighten the screw.
4. Repeat operations 1 and 2 for the other analog outputs, selecting a different
color wire for the OP2 and OP3 outputs.
5. Locate the terminal block over the connector labelled ANALOG OUTPUTS
and push the terminal block rmly into the connector.
2.5.3 Alarm Output Connections
Two alarm outputs are provided from a terminal block, located on the rear panel of
the instrument, as two pairs of potential free, change-over relay contacts. These are
designated as a PROCESS alarm and a FAU LT alarm.
The PROCESS alarm can be congured to represent any one of the measured or calculated
parameters and set-up to operate when a pre-set parameter threshold level is exceeded. By
default, the PROCESS alarm is set to monitor the dew-point parameter. See section 3.2.4 for
further details.
The FAU LT alarm is a non-congurable alarm which continuously monitors the degree
of contamination of the chilled mirror. During normal operational conditions this alarm
will be off. If the optics or the mirror contamination exceeds 100% of the lm thickness,
or if a fault exists on the Pt100, the alarm is triggered and the relay contacts will change
state.
This fault is also reported to the status area of the display.
The two alarm output ports are connected to the instrument via a single 6-way, push-t
connector block as shown in Figure 5. Each output comprises a 3-wire set of potential
free, change-over relay contacts.
Each contact set is labelled COM (common 0 V), N/O (normally open with respect to
COM) and N/C (normally closed with respect to COM).
To differentiate between the alarm output channels it is recommended that a black lead
be used for each of the COM (common) lines and a separate color for each of the N/O
and N/C lines.

Optisure Remote User’s Manual
Kahn Instruments 9
INSTALLATION
DANGER
Electric
Shock Risk
WARNING: Alarm leads MUST be potential free when wiring
to the connector block.
Figure 5 Alarm Output Connectors
For each output:
1. Strip back the wire for the common (black) connection to the COM
connector way for the FAU LT alarm contact set, exposing approximately
0.25" (6mm) wire and clamp into the screw block COM terminal way. Do
not overtighten the screw.
2. Strip back the wire for the N/O (e.g. green) connection to the N/O
connector way for the FAU LT alarm contact set, exposing approximately
0.25" (6mm) wire and clamp into the screw block N/O terminal way. Do
not overtighten the screw.
3. Strip back the wire for the N/C (e.g. blue) connection to the N/C connector
way for the FAU LT alarm contact set, exposing approximately 0.25" (6mm)
wire and clamp into the screw block N/C terminal way. Do not overtighten
the screw.
4. Repeat operations 1 to 3 for the PROCESS alarm contact set, using
appropriate colored wires.
5. Locate the terminal block over the connector labelled ALARMS and push
the terminal block rmly into the connector.

Optisure Remote User’s Manual
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INSTALLATION
2.5.4 Dew-Point Sensor Connection
The dew-point sensor contains the optical system and the chilled mirror. It is tted with
an M12 connector to allow easy and secure connection to the instrument using the
supplied sensor cable.
Figure 6 Dew-Point Sensor Connection
2.5.5 Remote PRT Probe
1. Rotate the body of the PRT probe connector until it locates in the socket
labeled REMOTE TEMPERATURE (See Figure 7).
2. Push the connector into the socket until it locks. NOTE: Do not attempt
to force it into the socket. If it will not t in, rotate it until the key
locks and it pushes in easily.
3. To remove the connector, slide the connector’s body collar back along its
axis, away from the instrument, to release the lock and then gently pull the
connector body out of the socket. NOTE: Do not attempt to pull it out
with the cable, make sure that the collar is rst released.
Figure 7 Remote PRT Connection

Optisure Remote User’s Manual
Kahn Instruments 11
INSTALLATION
2.5.6 USB Communications Port Connector
The instrument features a USB port for communication with the Application Software.
The appropriate cable will be supplied with the instrument.
1. Check the orientation of the connector and gently push it into the socket
labelled USB (see Figure 8) .
2. To remove the connector, pull it out of the socket by holding the connector
body. Do not attempt to remove it from the socket by pulling on
the cable.
Figure 8 USB Port Connection
2.5.7 Ethernet Port (Optional)
The instrument features an optional RJ45 port for communication with the Application
Software.
1. Check the orientation of the connector and gently push it into the socket
labelled LAN.
Figure 9 Ethernet Port
2. To remove the connector, depress the small locking tab on the top and pull
it out of the socket by holding the connector body.
For more information on how to congure the Application Software see the section at
the end of the manual.

Optisure Remote User’s Manual
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INSTALLATION
2.5.8 RS232/485 Port (Optional)
The instrument features an optional RS232/485 port for communication with the
application software. This is designed to be used with a standard 9-pin D-sub connector.
1. Check the orientation of the connector and gently push it into the socket
labelled RS232 or RS485, and tighten the retaining screws.
2. Loosen the retaining screws, and pull the connector out of the socket by
holding the connector body.
RS232
RS232 Pinout (9-pin female)
Pin 1
Pin 6
Pin 5
Pin 9
Pin 1 N/C
Pin 2 TXD
Pin 3 RXD
Pin 4 N/C
Pin 5 GND
Pin 6 N/C
Pin 7 N/C
Pin 8 N/C
Pin 9 N/C
RS485
RS485 Pinout (9-pin female)
Pin 1
Pin 6
Pin 5
Pin 9
Pin 1 N/C
Pin 2 N/C
Pin 3 A
Pin 4 N/C
Pin 5 GND
Pin 6 N/C
Pin 7 N/C
Pin 8 B
Pin 9 N/C

Optisure Remote User’s Manual
Kahn Instruments 13
INSTALLATION
2.5.9 Remote Pressure Transducer (Optional)
1. Rotate the body of the pressure transducer connector until it locates in the
socket labelled PRESSURE TRANSDUCER.
2. Push the connector into the socket until it locks. NOTE: Do not attempt
to force it into the socket. If it will not t in, rotate it until the key
locks and it pushes in easily.
3. To remove the connector, slide the connector's body collar back along its
axis, away from the instrument, to release the lock and then gently pull the
connector body out of its socket. NOTE: Do not attempt to pull it out
with the cable, make sure that the collar is rst released.
Figure 10 Remote Pressure Transducer Connection