E-M-HC2-LDP-V1_06
Document Name
Document Code
HC2-LDP Manual
HC2-LDP
Low Dewpoint Probe
Instruction Manual
Instruction manual
Page
1 of 29
Document Type
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HC2-LDP Manual
Instruction manual
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Table of Contents
Table of Contents .......................................................................................................................................... 2
1 Overview .............................................................................................................................................. 3
1.1 Applicability....................................................................................................................................... 4
1.2 Background Information on the Principle of Measurement ............................................................... 4
2 Mechanical Dimensions ...................................................................................................................... 7
2.1 Probe ................................................................................................................................................ 7
2.2 Measurement Chamber .................................................................................................................... 8
3 General ................................................................................................................................................. 9
3.1 Power Supply ................................................................................................................................... 9
3.2 Measured Parameters ...................................................................................................................... 9
3.3 UART Interface ................................................................................................................................. 9
3.4 HW4 Software Compatibility ........................................................................................................... 10
3.5 Sensor Filter ................................................................................................................................... 10
4 User-Specific Settings and Functions ............................................................................................. 11
4.1 General AirChip4000 Functions...................................................................................................... 11
4.2 Factory Defaults ............................................................................................................................. 14
5 Mechanical Installation ..................................................................................................................... 15
5.1 Choice of Measurement Point ........................................................................................................ 15
5.2 Installation of the Probe .................................................................................................................. 17
5.3 Pin Configuration of Plug Connector .............................................................................................. 18
6 Maintenance....................................................................................................................................... 19
6.1 Service Cable ................................................................................................................................. 19
6.2 Calibration ...................................................................................................................................... 19
6.3 Probe .............................................................................................................................................. 20
7 Firmware Update ............................................................................................................................... 21
8 Technical Data ................................................................................................................................... 22
8.1 Technical data, measurement chamber ......................................................................................... 24
9 Accessories ....................................................................................................................................... 26
10 Additional Documents ...................................................................................................................... 28
11 Document Approval .......................................................................................................................... 29
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E-M-HC2-LDP-V1_06
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Document Code
HC2-LDP Manual
Instruction manual
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1 Overview
The RO TRONIC l ow-dewpoint pr obe i s designed to m easure trace moisture in t he r ange of
-70 .. 85° C (-94 .. 185 °F)T
temperature s ensor, an d t he hi gh-precision A irChip4000 measurement electronics for ev aluation a nd
processing of the sensor data. The probe is designed for dewpoint/frostpoint measurements in compressed-air
systems. The robust stainless-steel housing and the stainless-steel sinter filter make the probe suitable for
industrial applications. The output signals from the low-dewpoint probe are exclusively digital. Suitable devices
for m aking t he d ewpoint/frostpoint an d t emperature m easurements av ailable as analog s ignals ar e the
ROTRONIC measurement converters in the HF5, HF8 and PF4 series, as well as the ROTRONIC HP22 and
HP23 h and-held m eters. Alternatively, the probe can b e connected di rectly to a PC USB port, a nd r ead out
using MS Windows HW4 software.
The low-dewpoint probe has the following features:
• Very high precision measurement of dewpoint, frostpoint and temperature
• Pressure-resistant to 100 bar
• Absolute repeatability guaranteed
• The latest AirChip4000 measurement technology
• HYGROMER® LDP-1 sensor
• Software-based sensor alarm function
• Adjustment by customer possible
• 1-point temeparture calibration / adjustment
• Multi-point dew point calibration / adjustment
The units in the LDP series can be kept up to date with regard to improvements in functionality through simple
update of the firmware.
. The dew point probes are based on a capacitive trace moisture sensor, a Pt1000
d
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HC2-LDP Manual
Instruction manual
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1.1 Applicability
This manual applies to LDP series probes with firmware version V1.5. The low-order digit of the firmware version
stands for minor changes, e.g. correction of errors which do not influence the main functionality of the device.
1.2 Background Information on the Principle of Measurement
The presence of liquid water is undesirable in many industrial gases (e.g. compressed air). It can lead to rust in
the piping and functional elements, rupture of lubricant films, electrochemical formation of elements, microbial
contamination, and icing, with the associated damage to the system. If the dewpoint of the process gas is known,
a suitable drying process can be used to lower its (pressure) dewpoint to a point at which the formation of liquid
water (condensation) is avoided. By and large, it can be said that the lower the temperature and humidity of a
gas is, the lower its pressure dewpoint will be. Determining this kind of low dewpoint, especially at high gas
pressure, makes considerable demands on the pressure resistance, chemical resistance, and resolution of the
humidity probe, and on t he processor p ower nec essary f or t he e lectronics t o convert t emperature an d gas
humidity to the associated low-dewpoint temperature.
That is why the latest AirChip4000 technology is used in the ROTRONIC low-dewpoint probe. It is based on an
enhancement an d p ower bo ost t o t he market-proven, h igh-precision A irChip3000 t echnology. H umidity
measurement i s effected by the new , c apacitive H YGROMER
temperature sensor, it allows the dewpoint or frostpoint to be determined precisely. The AirChip4000 technology
can ascertain any of over 8,000 individual points, and guarantees a high degree of repeatability. The increased
performance is vital for dewpoint applications, because the slightest variations in the environmental conditions
of the delicate trace moisture climate are very important for the results of measurement.
The firmware of the low-dewpoint probe also has an integrated low-pass filter to effectively reduce signal-noise
interference. The result is a low-dewpoint measurement precision of ±2 K T
-50 .. 20 °C T
Familiar f unctions of t he A irChip3000 t echnology, s uch a s c alibration, adj ustment, an d c ompatibility w ith
ROTRONIC measurement transducers and hand-held meters, are also available in the AirChip4000 technology
of the LDP probe.
The dewpoint measurement and its equalization time depend on many factors. ROTRONIC therefore provides
a measurement chamber (see figures 2, 4, 8 and 9) with a pre-set airflow of 1 litre per minute at 8 bar pressure.
In the measurement chamber, the probe experiences constant airflow, which allows very fast, precise dewpoint
measurement. T he equal ization t ime of t he measurement v alue m ay v ary widely bet ween app lications. I t
depends on the flow velocity in the measurement chamber, the absolute pressure in the measurement line, the
dewpoint of the surroundings, and the surface structure of the measurement line.
.
d
®
LDP-1 s ensor. T ogether w ith t he P t1000
in the range
d
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E-M-HC2-LDP-V1_06
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HC2-LDP Manual
1.2.1 Construction of the probe
Integrated AirChip4000
measurement
electronics
Figure 1: Description of the LDP probe and its c omponents.
Screw-in LDP probe
27 mm hex nut for
tightening the probe with
25 Nm
Fixed valve, airflow 1
litre per min. at 8 bar.
Instruction manual
Page
Measurement chamber
base body, POM
5 of 29
Document Type
HYGROMER® LDP 1
sensor and stainlesssteel sinter filter
Quick-action
compressed-air
coupling
Figure 2: LDP probe, screwed into LDP FC measurement chamber in POM (Polyoxymethylene).
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Quick-action
coupling
Document Code
HC2-LDP Manual
Instruction manual
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1.2.2 Measurement chambers
The measurement chamber is available in POM (polyoxymethylene) or stainless steel. It can be ordered as a
base body or as a ready-assembled unit with a quick-action compressed-air coupling and fixed valve.
Figure 3: Base body of measurement chamber (LDP MC) in POM (polyoxymethylene) and stainless steel.
G1/4“ thread for
customized
connections
compressed-air
G1/4“ thread for
customized
connections
G1/2“ thread for
LDP probe
Fixed valve, airflow
1 litre per min. at 8
bar
G1/2“ thread for
LDP probe
Figure 4: Fully assembled measurement chamber (LDP FC) in POM (polyoxymethylene) and stainl ess steel.
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14.9
G1/2“
Document Code
HC2-LDP Manual
Instruction manual
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2 Mechanical Dimensions
2.1 Probe
The LDP probes are available with 2 metres or 5 metres of cable. Figures 5 and 6 show the sensor head of the
low-dewpoint probe.
Figure 5: Dimensions of the LDP probe head in mm
Figure 6: 3D drawing of the probe head.
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HC2-LDP Manual
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2.2 Measurement Chamber
The measurement chamber is available as a complete unit with fixed valve and quick-action compressed-air
coupling.
Figure 7: Dimensions (in mm) of the complete measurement chamber with LDP FC fixed valve.
Customized applications can build on the base body.
Figure 8: Dimensions (in mm) of the LDP MC measurement chamber base body.
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HC2-LDP Manual
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3 General
3.1 Power Supply
For full functionality, the LDP probe requires a power supply at 3.3 .. 5 VDC (1.5 mA).
3.2 Measured Parameter s
The ROTRONIC LDP probe calculates the dewpoint/frostpoint from the humidity measurements taken by the
HYGROMER® LDP-1 dewpoint s ensor, and t emperature m easurements f rom a P t1000 temperature s ensor.
The values for dewpoint, frostpoint and temperature are transmitted in the form of a digital signal.
3.3 UART Interface
The LDP probe has a serial digital UART interface (UART: Universal Asynchronous Receiver Transmitter),
which is compatible to the HF5, HF8, and PF4 measurement transducers, HP22 and HP23 hand-held meters,
and the AC3001 service cable (probe UART to PC USB). With the HW4 software (Professional Version) installed
on the PC, the following functions are available:
• Recording and display of current measured and calculated values;
• Configuration of the probe;
• Calibration and adjustment of the probe.
Connect the probe to the PC as follows:
- Connect the LDP probe to a USB port of an MS Windows PC via AC3001 (UART-to-USB adapter).
- Use HW4 to search for and include the unit:
Units and groups > Searc h for units > Search for USB master
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HC2-LDP Manual
Instruction manual
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3.4 HW4 Software Compatibility
LDP series probes are completely integrated in the HW4 software at V3.4.0 or higher.
3.5 Sensor Filter
The probe must always be protected from soiling by a stainless-steel sinter filter. The filter has a pore size of
50 µm (ROTRONIC Order Code: SP-S15/50).
IMPORTANT:
You should not touch the filter with your bare hands. Soiling of any kind can impair the precision and response
time of the measurements.
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E-M-HC2-LDP-V1_06
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Dewpoint, frostpoint and temperature adjustment
• Multi-point dewpoint/frostpoint calibration and adjustment
Write protection
The device settings can be protected by a password. Password protection is configured with the HW4
Document Code
HC2-LDP Manual
Instruction manual
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4 User-Specific Settings and Func t ions
The LDP probe has a large number of functions and settings that users can adapt to suit their requirements.
This chapter contains an overview of all functions and their default settings.
4.1 General AirChip4000 Functions
This section outlines the general functions of the AirChip family available in the LDP probes. All functions can
be used with the HW4 software and are described in detail in the manual E-M-HW4v3-LDP-001.
4.1.1 Calibration and adjustment
• Single-point temperature calibration and adjustment
• Time stamp for each calibration and adjustment point
• Saving and display of the last adjustment data and values
• Creation of a calibration and adjustment log
IMPORTANT:
ROTRONIC r ecommends that you send the probe back to t he m anufacturer for c alibration and adjustment.
ROTRONIC has a professional, high-quality calibration system that guarantees optimal, certified results.
4.1.2 Write Protection for Device Settings
software.
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Out-of-limits value alarm
Specific limit values can be defined for dewpoint, frostpoint and temperature; an alarm is shown in the HW4
Bad sensor alarm
This function is a fixed component of the LDP probe firmware and cannot be disabled. In the case of a short
circuit or power interruption at the dewpoint or temperature sensor, a digital alarm is triggered and displayed
in the HW4 software. While the alarm is pending, the values for dewpoint/frostpoint are set to the current
Automatic threshold monitoring
Threshold monitoring can be enabled or disabled (only with HW4 v3.5).
Document Code
HC2-LDP Manual
Instruction manual
Page
4.1.3 Alarm Functions
software when they are exceeded.
The alarm function can be enabled or disabled.
temperature value (e.g. at 23 °C (73 °F), the display shows 23 °C (73 °F) Td).
In the case of a temperature-sensor alarm, the temperature value is set to -99 °C (-146 °F).
Document Type
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4.1.4 Threshold Monitoring
Enabled: (only if wished by customer this function can be enabled by factory)
Threshold monitoring becomes active below a measured value of -69.9 °C (-94 °F) T
measured value to -66 °C (-89 °F) Td. This allows the user to observe changes in the measured values in
the lower limit range.
Disabled: (default setting)
The value limits integrated in the probe prevent it from measuring values below -70 °C (-94 °F) T
output measurement value is limited at -70 °C (-94 °F) T
. It then sets the
d
. The
d
.
d
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There is no static system without any changes. Systems are always in motion and this may must be monitored.
In t his c ase t he t hreshold monitoring can be us ed when changes of t he v alue a re important ev en be low
-70 °C T
system. After reaching -70 °C Td the value jumps back to -66 °C Td and goes further down until the system is
stable.
. The following graph shows the drying process of a probe after connecting i t to a compressed air
d
In t his c ase a c ompressed air sy stem i s monitored w hich is s lightly be low -70 ° C T d. W ith t he t hreshold
monitoring activated, variations (e.g.: opening of valves, extensive use of air, leakage, etc.) in the system can
still be seen.
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Configurable Setting
Factory Default
Unit of measurement (metric/English)
Metric
Automatic threshold-value monitoring
Disabled
Dewpoint/frostpoint
Dewpoint
Functions
Factory Default
Three-point dewpoint adjustment
Write protection
Disabled
Measured value alarm, invalid measured
Simulator mode
Disabled
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HC2-LDP Manual
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4.2 Factory Defaults
All factory defaults and functions of the LDP probe are described below. The HW4 software (V3.4.0 or higher)
is needed to change them. An AC3001 service cable can be used to connect the probe to the PC.
Adjustment
Single-point dewpoint adjustment
value (digital alarm)
Disabled
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5 Mechanical Installat ion
5.1 Choice of Measurement Point
There are several points to note when choosing the point at which to measure the dewpoint/frostpoint.
5.1.1 Positioning the probe and the measurement chamber
The probe can be screwed directly into a line (max. 100 bar), or plugged into a compressed-air connection (max.
16 bar) with a measurement chamber (see figure 9).
IMPORTANT: The measurement chamber must not be connected directly to the compressed air supply without
a properly s crewed-in probe, and the probe must not be r emoved f rom the measurement chamber when the
chamber is still under pressure.
It is recommended that you position the probe close to the application to be monitored. Long pipelines from the
measurement chamber to the main line that is to be monitored make measurement unnecessarily difficult with
regard to amplitude and reaction time. In order to prevent any drop in environmental humidity and pressure from
affecting the measurements, there must be no leaks (except for the outlet valve of the measurement chamber).
Figure 9: POM measurement chamber LDP-FCPB1 with compressed-air connection (left), probe insertion
thread (right), and fixed valve (top).
5.1.2 Positioning of probe with regard to temperature specifications
Care m ust be taken that the temperature specifications of t he probe are not exceeded by the medium being
measured.
If the temperature is too high, the medium must be cooled down. To avoid condensation, the dewpoint must,
however, be lower than the ambient temperature.
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5.1.3 Filter soiling
Oil and dust particles in the gas line affect the measurement precision, reaction time and lifetime of the probe.
The probe’s filter cannot filter out particles less than 50 µm in diameter. In this case, it is advisable to install a
more effective external filter upstream. The drop in pressure or reduction in flow volume that this causes can
impair t he m easurement precision an d reaction t ime. H owever, t he measurement i n i ts steady s tate w ould
remain stable over time, even in this setup.
5.1.4 Pressure at the probe head
The m aximum per manent pr essure f or t he pr obe i s 100 bar. P lease n ote t hat t he c omplete measurement
chamber with its quick-action coupling and fixed valve is only approved for up to 16 bar.
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sealing ring
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5.2 Installation of the Probe
As soon as the measurement point has been determined, the probe can be installed as follows:
1. Push the sealing ring over the filter onto the G1/2” threaded shaft. Use a new sealing ring f or every
new installation of the probe.
2. Remove the red protective cap. Do not touch
the probe filter with your bare hands.
3. First, screw the probe finger-tight into a G1/2”
thread.
4. Tighten the probe with a torque wrench set to 25 Nm.
Important: The probe must be tightened using only its 27 mm hex section.
5. The probe can be attached only to a transmitter, a hand-held meter or a PC.
- Connection to a PC: The plug of the probe is connected to a PC via the AC3001 service cable.
- Connection to a transmitter (HF5, HF8 or PF4): The plug of the probe is attached directly to the
probe input on the transmitter.
- Connection to a hand-held meter (HP22, HP23): The plug of the probe is attached directly to the
probe input on the hand-held meter.
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HC2-LDP Manual
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5.3 Pin Configuration of Plug Connector
The low-dewpoint probe has a ROTRONIC E2 plug that is compatible with measurement transducers HF5, HF8,
PF4, HP22 and HP23, and with the AC3001 service cable. Its pin configuration is shown in figure 10.
Figure 10: Pin configuration of the E2 plug
1 V (+) 3.3 .. 5 VDC
2 GND Supply ground
3 RxD UART reception line
4 TxD UART transmission line
5 - Not connected
6 - Not connected
7 - Not connected
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6 Maintenance
This chapter describes calibration, adjustment, validation and filter changes as well as the tools necessary for
this, e.g. service cable.
6.1 Service Cable
An AC3001 service cable can be used for maintenance and calibration. The service cable has an internal power
supply of 3.3 VDC. Alternatively, the connection to the PC can be made via an HF5, HF8 or PF4 transmitter, or
an HP22/HP23 hand-held meter.
6.2 Calibration
Both the Pt1000-RTD temperature sens or used in the probe and the corresponding electronics are very stable
and do not normally need to be calibrated after i nitial f actory c alibration. T he long-term s tability of t he
HYGROMER
the calibration of the probe should be checked every 12 months. Applications in which the probe is exposed to
considerable contamination could require more frequent checks.
IMPORTANT:
ROTRONIC r ecommends that you send t he probe back to t he m anufacturer for c alibration and adjustment.
ROTRONIC has a professional, high-quality calibration system that guarantees optimal, certified results.
Customers can carry out the adjustments themselves, using the HW4 software.
• Start the HW4 software and look for the connected LDP probe (HW4 Menu > Devices and Groups >
• The device tree of the LDP probe lists all calibration and adjustment functions.
• At least 2 calibration points must be recorded, if adjustments are to be made at a later date.
• The adjustment points must be recorded in the sequence from dry to moist; the lowest calibration point
• You will find further instructions in the LDP sensor software manual, E-M-HW4v3-LDP-001.
®
LDP-1 sensor from ROTRONIC is normally better than 1.°C T
Search for Devices > Search for USB Master)
must b e a t t he lower l imit of t he m easurement r ange, w ith t wo f urther po ints in t he r ange
-10 .. 10 °C (14 .. 50 °F) T
.
d
per year. For maximum accuracy,
d
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6.2.1 Dewpoint and temperature adjustment
The probe should be calibrated at least once a year, and adjusted if necessary. ROTRONIC strongly advises
that you return the probe to the factory for this. If adjustment on site is necessary, the probe should be readjusted
at the following dewpoint values.
• -60 °C Td (±5 °C Td)
• -10 °C Td (±5 °C Td)
You can add further points as necessary. It is advisable to adjust the probe in the order from dry dewpoint value
to humid dewpoint value. Ensure that the probe is in steady state at each dewpoint, i.e. the measured dewpoint
value no longer changes.
The equipment needed for adjustment (dewpoint reference, low dewpoint generator) has a decisive influence
on the measuring accuracy of the probe.
Calibration/adjustment c an be performed w ith t he HW4 s oftware. S hould it be n ecessary t o adj ust the LDP
probe, this can be done with the HW4 software. You will find further instructions in the HW4 software manual
E-M-HW4v3-LDP-001 for the LDP probe.
6.3 Probe
It is recommended to carry out maintenance on the probe at least once a year (or, in the case of measurements
in oil-polluted air, every 3 months). To do this, remove the filter and submit it to a visual inspection. Soiled parts,
such as measurement chamber, fixed valve or filter, must be cleaned in an ultrasonic bath and al cohol, or
exchanged. If the sensor is soiled, the probe must be returned to the manufacturer.
IMPORTANT:
The s ensor filter must be removed very c arefully, because t ouching the trace moisture sensor can destroy it!
The filter should not b e t ouched w ith bare hands. A ny improper maintenance can l ead t o a r eduction in the
precision of measurements.
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7 Firmware Update
The LD P pr obe f irmware can b e u pdated w ith t he H W4 s oftware. Firmware u pdates ar e av ailable for
downloading on the ROTRONIC website. Updating t he firmware r equires that the probe be connected v ia an
AC3001 service cable to a PC with HW4 software installed on it.
IMPORTANT:
There must be a permanent connection to the computer and a stable power supply during the update process.
Procedure:
• Connect the probe to the service cable, or to an HF5, HF8, PF4, HP22 or HP23.
Remark:
As of 20 14, t he s ervice cables w ork w ith a s tandard U SB dr iver. O lder s ervice cables nee d a
ROTRONIC USB driver, which is installed on the PC together with the HW4 software. For detailed
information on the ROTRONIC USB driver, see the manual E-M-HW4v3-Main.
• Download the latest LDP probe firmware to your PC from the ROTRONIC website.
• Launch the HW4 software on the PC and search for the LDP probe.
HW4 Main Menu > Devices and Groups > Search for Devices > Search for USB Master / Search for
Ethernet Master
• Select t he U pdate opt ion under Device Manager in t he menu
Extras > Firmware Update
For further information, see the manual E-M-HW4v3-LDP-001.
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General
Device type
Low-dewpoint/temperature probe
Output signal type
Digital
Compatible
HF5, HF8, PF4, HP22, HP23, AC3001, HW4 (V3.4.0 or higher)
Power supply
(V+)
3.3…5 VDC
Current consumption
<1.5 mA
Electrical connection
E2 plug (7-pin)
Polarity protection
Mechanical
Dewpoint / frostpoint measurement
Sensor
Measurement range
-70…85 °C (-94…185 °F) Td
±2 K Td (-50…20 °C / -58…68 °F Td)
Long-term stability
<1 °C Td/year
Typically: 10 mins. (humid to dry)
Calibration / adjustment
Multi-point calibration / adjustment
Temperature measurement
Sensor
Pt1000, Class B 1/3 DIN
Measurement range
-40…85 °C / -40…185 °F
Measurement precision at 23 °C (73 °F)
±0.2 K
Response time Ƭ63: at -50 °C (-58 °F) Td
Typically: 15 mins.
Calibration / adjustment
Single-point calibration / adjustment
Startup time and measurement interval
4 s (typical)
2 s (typical)
Document Code
HC2-LDP Manual
8 Technical Data
Instruction manual
Page
22 of 29
Document Type
Measurement precision at 23 °C (73 °F)
Response time Ƭ63: at -50 °C (-58 °F) Td
Startup time
HYGROMER® LDP-1
±3.5 K Td (-60…-50 °C / -76…-58 °F Td)
Typically: 13 s (dry to humid)
Measurement interval
© 2016; Rotronic AG
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E-M-HC2-LDP-V1_06
Document Name
Digital interface
Interface type
Serial (UART)
Maximum length of cable
5 m (16.4 ft)
General specifications
Material of probe housing
Stainless steel, 1.4301
Filter material
Stainless-steel sinter filter, pore size 50 µm
IP protection
IP65
Pressure resistance, sensor
145 x 31 mm (probe head)
Weight
260 g (9.2 oz)
Conformity
EMC Directive:
Solder type
Lead free (RoHS directive 2011/65/EU)
FDA & GAMP directives
Conforms
Environmental limits
Storage and transit
-40 .. 85 °C (-40 .. 185 °F) non-condensing
Operation
-40 .. 85 °C (-40 .. 185 °F) non-condensing
Critical environments
Trace moisture sensor: per DV04-14.0803.02 – critical chemicals
Document Code
HC2-LDP Manual
component
Page
Baud rate : 19,200
Parity : none
Data bits : 8
Stop bits : 1
16 bar (100 bar with LDP-MCS measurement chamber)
Instruction manual
Document Type
23 of 29
Dimensions
CE / EMC immunity
Hex nut: 27 mm
until 20.04.2016: 2004/108/EG
from 20.04.2016: 2014/30/EU
EN 61000-6-1: 2007, EN 61000-6-2: 2005
EN 61000-6-3: 2007+A1:2011+AC:2012, EN 61000-6-4: 2007+A1:2011
Performance criterion: www.rotronic.com
© 2016; Rotronic AG
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E-M-HC2-LDP-V1_06
Document Name
Name
Formula
Concentration
Duration of exposure
Deviation
Carbon dioxide
CO2
10,000 ppm
20 min
±0.2 °C Td
Carbon monoxide
CO
100 ppm
20 min
±0.3 °C Td
Ammonia
NH3
50 ppm
20 min
±0.3 °C Td
Nitrogen dioxide
NO2
5 ppm
20 min
±0.1 °C Td
Hydrogen
H2
3,500 ppm
20 min
±0.2 °C Td
Hydrogen sulfide
Ethylene oxide
Methane
Motor oil
-
100 %
Long-time exposure
±0.4 °C Td
Acetone
CH3COCH3
100 %
1 h
±0.4 °C Td
Toluol
C6H5CH3
100 %
3 h
±0.8 °C Td
Xylene
C6H5(CH3)2
100 %
3 h
±0.2 °C Td
Helium
He
10 %
20 h
±0.2 °C Td
Hydrogen peroxide
H2O2
800 ppm
38 days
±1.2 °C Td
Document Code
HC2-LDP Manual
8.1 Chemical compatibility of LDP-1 sensor
H2S 1 ppm 20 min ±0.6 °C Td
C2H4O 2…3 % 18 cycle a 90 min ±4 °C Td
CH4 100 % 11 days ±0.6 °C Td
Instruction manual
Page
24 of 29
Document Type
Note:
The deviations were measured at 23°C and 80 %RH (19.37 °C T
).
d
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E-M-HC2-LDP-V1_06
Document Name
Base body (LDP-MC)
-40…85 °C (LDP-MCP, POM)
16 bar (LDP-MCP, POM)
Dimensions
40 x 106 mm
G1/2” thread for LDP probe
POM (LDP-MCP)
Measurement chamber with quick-action coupling and fixed valve (LDP -FC)
Air flow
1 litre per min. at 8 bar
-40 .. 85 °C (POM version)
Pressure resistance
16 bar
Dimensions
40 x 106 mm
G1/2” thread for LDP probe
Base body: POM / stainless steel 1.4301
Document Code
HC2-LDP Manual
8.2 Technical data, measurement chamber
Ambient temperature
Pressure resistance
Connections
Housing material
-50…100 °C (LDP-MCS, stainless steel)
100 bar (LDP-MCS, stainless steel)
2 x G1/4” thread
Stainless steel 1.4301 (LDP-MCS)
Instruction manual
Page
25 of 29
Document Type
Measurement range
Connections
Housing material
-50 .. 100 °C (stainless-steel version)
Compressed-air nipple NW7.2
Valve: Zirconium oxide
Quick-action coupling: Brass
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E-M-HC2-LDP-V1_06
Document Name
Document Code
HC2-LDP Manual
Instruction manual
Page
26 of 29
Document Type
9 Accessories
All accessories for ROTRONIC products are to be found in the manual E-M-HC2-accessories. The main
service cables for the LDP probe are also listed there:
Order Code Description
LDP-MCP
LDP-MCS
Measuring chamber base body,
POM
Measuring chamber base body,
stainless steel
LDP-FCPB1
LDP-FCSB1
AC4001-B
Measurement chamber with
fixed coupling and quick-action
compressed-air coupling, POM
Measurement chamber with
fixed valve and quick-action
compressed-air coupling,
stainless steel
Replacement fixed valve
© 2016; Rotronic AG
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E-M-HC2-LDP-V1_06
Document Name
Document Code
HC2-LDP Manual
AC3001
SP-S15/50
AC4003
USB/UART service cable with
E2 socket
Stainless-steel sinter filter, 50
µm
Sealing ring
Instruction manual
Document Type
Page
27 of 29
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E-M-HC2-LDP-V1_06
Document Name
Document Name
Contents
E-M-HW4v3-LDP-001
HW4 software manual for operation of the LDP probe.
E-M-HW4v3-Main
HW4 software version 3: general instructions and description of functions.
Accessories such as service cables, calibration accessories, filters for
probes, transmitters.
Document Code
HC2-LDP Manual
Instruction manual
Page
28 of 29
Document Type
10 Additional Documents
E-M-HW4v3-DIR
E-M-HC2-accessories
Remark:
The document titles are supplemented by the appended version numbers. These version numbers have been
omitted in the above table.
List of all HW4 manuals.
© 2016; Rotronic AG
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E-M-HC2-LDP-V1_06
Document Name
Document Code
HC2-LDP Manual
Instruction manual
Page
29 of 29
11 Document Approval
Version Date Remark
V1_00 November 2014 Release document
V1_01 November 2014 Graphic of threshold monitoring added
V1_02 March 2015 Response time dry to humid added
V1_03 March 2015 Threshold monitoring is disabled by factory
V1_04 September 2015 Calibration / adjustment specification included
V1_05 November 2015 Chemical compatibility of LDP-1 sensor added
V1_06 May 2016 Update CE guideline
Document Type
© 2016; Rotronic AG
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