KISTERS HydroMet OSS-B1 User manual

User Manual
OSS-B1
12-2023 – 01-04-00212-2023 – 01-04-002

2© 2023 | KISTERS
Table of Contents
Disclaimer 3I
II Scope of Delivery 4
III Safety Instructions 5
Part I Introduction 6
Part II Operation 7
Part III Maintenance 9
3.1 Service and Recalibration .......................................................................................................... 10
Part IV Troubleshooting 11
Part V Repair 13
5.1 Replacement of Cable Ends ........................................................................................................ 14
5.2 Part List ..................................................................................................................................... 16
Part VI Technical Data 23
Part VII Obligations of the Operator and Disposal 24
7.1 Obligations of the Operator ...................................................................................................... 24
7.2 Dismantling / Disposal ............................................................................................................... 24

3© 2023 | KISTERS
Copyright Notice: No parts of this work may be
reproduced in any form or by any means without the
written permission of the publisher. KISTERS waives
copyright for users to print out parts of the
documentation in hard copy for their own use only.
Trademark Notice: KISTERS products and services
referred to in this document are trademarks or registered
trademarks of KISTERS. Other product names used may
or may not be the trademarks of their respective owners.
© 2023 | KISTERS. Any rights not expressly granted herein
are reserved.
The information provided in this manual was deemed
accurate as of the publication date. However, updates to
this information may have occurred.
This manual does not include all of the details of design,
production, or variation of the equipment nor does it cover
every possible situation which may arise during
installation, operation or maintenance. KISTERS shall not
be liable for any incidental, indirect, special or
consequential damages whatsoever arising out of or
related to this documentation and the information
contained in it, even if KISTERS has been advised of the
possibility of such damages.
Any errors found in any KISTERS product should be
reported to KISTERS where every effort will be made to
quickly resolve the problem.
This document is public.
I Disclaimer

4© 2023 | KISTERS
II Scope of Delivery
Contents of the basic kit
In durable waterproof carrying case:
§ OSS-B1 Body
§ OSS-B1 Connecting Lead
§ Body Key
§ Fan type A
§ 2 × spare bearings
§ 1 × reed switch
§ Screwdriver (Short)
§ Screwdriver (Small)
§ O-Rings for (fan carrier-1, reed switch cover -2, lead-1, terminal post-1)
§ Ground Post
§ 1 × oil bottle
§ Rating Tables
In canvas bag:
§ 1 × Wading Rod of length 1.8 m in 3 sections (3 × 0.6 m), 20 mm diameter
Accessories are available and must be ordered separately:
§ Current Meter Counter: PVD200
§ Fans: type 1, 2 and 4 (for details see ch. Technical Data )
§ Tail Fin Stem Assembly
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5© 2023 | KISTERS
§ Read the user manual including all operating instructions prior to installing, connecting and powering up the KISTERS OSS-
B1. The manual provides information on how to operate the product. The manual is intended to be used by qualified
personnel, i.e. personnel that have been adequately trained, are sufficiently familiar with installation, mounting, wiring,
powering up and operation of the product.
§ Keep the user manual on hand for later reference!
§ If you encounter problems understanding the information in the manual (or part thereof), please consult the manufacturer
or its appointed reseller for further support.
§ KISTERS OSS-B1 is intended to be used in hydrometeorological or environmental monitoring applications.
§ Before starting to work, you have to check the functioning and integrity of the system.
§ Check for visible defects on the OSS-B1, this may or may not include any or all of the following mounting facilities,
connectors and connections, mechanical parts, internal or external communication devices, power supplies or power
supply lines, etc.
§ If defects are found that jeopardize the operational safety, work must be stopped. This is true for defects found before
starting to work as well as for defects found while working.
§ Do not use the KISTERS OSS-B1 in areas where there is a danger of explosion.
§ The present user manual specifies environmental/climatic operating conditions as well as mechanical and electrical
conditions. Installation, wiring, powering up and operating the KISTERS OSS-B1 must strictly comply with these
specifications.
§ Perform maintenance only when tools or machinery are not in operation.
§ If guards are removed to perform maintenance, replace them immediately after servicing.
§ Never make any electrical or mechanical diagnostics, inspections or repairs under any circumstances. Return the product to
the manufacturer’s named repair centre. You can find information on how to return items for repair in the relevant section
of the KISTERS website.
§ Disposal instructions: After taking the KISTERS OSS-B1 out of service, it must be disposed of in compliance with
local waste and environmental regulations. The KISTERS OSS-B1 is never to be disposed in household waste!
§ Inputs and outputs of the device are protected against electric discharges and surges (so-called ESD). Do not touch
any part of the electronic components! If you need to touch any part, please discharge yourself, i.e. by touching grounded
metal parts.
III Safety Instructions

6© 2023 | KISTERS
Introduction
1 Introduction
Thank you for choosing our product. We hope you will enjoy using the device.
KISTERS manufactures, sells, installs and operates quality instrumentation, data loggers and communication technology.
Products are designed with passion for environmental monitoring and with a deep understanding of the quality, accuracy and
robustness needed to fulfil the requirements of measurement practitioners in the field.
The present User Manual will help you understand, install and deploy the device. If, however, you feel that a particular
information is missing, incomplete or confusing, please do not hesitate to contact us for further support!
The OSS-B1 universal current meter is a field-proven instrument for measuring the velocity of water in open and closed
channels. It is used for point measurements of flow velocities on the water surface or in vertical profiles down to the riverbed
at flow speeds of 0.025 m/s to 10 m/s.
One of the great features of the OSS-B1 is that it can be used with a 20 mm diameter wading rod and relocating device,
streamlined suspension tube, portable winches and permanent cableway installations, with streamlined or ground-feeling
weights. Furthermore, an optional tail fin assembly is available in two standard sizes, CMB09S (650 mm long) and CMB09
(1,000 mm long), to control directional stability during suspended measurements.
The OSS-B1 comes with a variety of accessories which enable the user to endure water flow measurement easily and
accurately.
All current meters manufactured by KISTERS are calibrated in our purpose built high velocity rating tank prior to shipment.
This rating tank is considered as best in the world since it can run at a velocity of 0.005 m/s minimum and 8 m/s maximum
with a velocity resolution of ±0.001 mm
As part of our service we are able to recondition and recalibrate current meters of any make, including electromagnetic and
other solid state meters. Calibration is directly traceable to International Standards.
All current meters are calibrated in accordance with AS 3778.6.3-1992. This standard is identical with and has been
reproduced from ISO 3455:2021.
The purpose of this manual is to make the user familiar with the OSS-B1 current meter. It is a sensitive and reliable precision
instrument. It is advisable to read this manual carefully and fully understand its use. After reading this manual if you are not
sure about any details, please do not hesitate to contact our office (contact details are on the cover of this manual).

7© 2023 | KISTERS
Operation
2 Operation
One impulse signal is produced per Fan revolution. As shown in figure1 below, this signal is generated by an encapsulated
reed switch (1) which resides inside the meter body (2) and a permanent magnet (3) set into the rotating Fan assembly. A
cover sealed with two O-rings provides a water-tight housing for the reed switch, while gold plated contact pins ensure low-
resistance signal passage.
The voltage must not exceed 9 V DC. Provided the impulse counters have spark-suppression circuits, the meter can be loaded
with up to 1.6 watts. All our counters meet these requirements (refer to specification).
Four type of stainless steel Fans (4) can be used with this meter, all these Fans are supported on bearings which run within the
oil filled hub of the Fan assembly. The capillary oil passage between the stainless steel axle (5) and Fan carrier (6), prevents
entry of water to the bearings. A locknut on the shaft locates the bearings and sets the end float of the assembly.
Figure 1

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Operation
Figure 2
Figure 3
Figure 4

9© 2023 | KISTERS
Maintenance
3 Maintenance
The maintenance of the OSS-B1 current meter can be divided in three sections as stated below. In addition, it is advisable that
the user maintain the OSS-B1 current meter at all time.
§ Keep the OSS-B1 case clean.
§ Clean all the tools after usage.
§ Use lint free paper towels and white spirit (do not use methylated).
§ Office service is required for the OSS-B1 current meter about once a month if it is used on a daily basis (i.e. Fully dismantle
shaft assembly, fan carrier and fan; Clean each item using hot soapy water and then rinse with white spirit).
§ Check the lead and new the ends connections.
§ If the current meter fails the spin test, refer to the mechanical fault-finding section for details.
§ Test lead, counter and reed switch (refer to electrical fault-finding section for details).
For more information, see the following subsection:
§ Service and Recalibration
Section 1: Before commencing a discharge measurement, the following steps should be performed
§ Remove shaft protector from spindle shaft using the provided flat blade screwdriver.
§ Remove fan carrier and shaft assembly from the fan by screwing anti-clockwise (ensure shaft assembly is placed on a
clean lint free cloth to prevent contamination of the bearings).
§ Fill the fan with fresh oil and screw the fan carrier assembly clockwise into the fan (hand tight only).
§ Re-assemble the fan carrier assembly onto the body and secure with the retraining screw.
§ Perform spin test.
§ Start gauging.
Section 2: During a gauging
After every one hour of use, the current meter should be cleaned before continuing a discharge measurement.
Before cleaning the current meter, perform a spin test to ensure the current meter has performed as expected during the last
measurement.
To clean the current meter, perform the following steps:
§ Remove the spare parts from the supplied cleaning jar and ¾ fill with white spirit.
§ Remove fan assembly from meter body by undoing the retraining screw and separating the body from the fan carrier
assembly.
§ Remove fan carrier and shaft assembly from the fan by screwing anti-clockwise (ensure shaft assembly is placed on a
clean lint-free cloth to prevent contamination).
§ Drain the old oil from the fan into a recycling container (for environmental reasons, do not pour white spirits on the
ground).
§ Put the bearing end of the spindle assembly into the cleaning jar and gently agitate.
§ Fill up the fan with white spirit and place your thumb over the threaded hole and shake vigorously for a few seconds.
§ Pour the white spirits into a recycling container (for environmental reasons, do not pour white spirits on the ground).
§ Remove the fan spindle assembly from the cleaning jar and blow dry.
§ Re-assemble the spindle assembly into the fan carrier.
§ Fill the fan with clean unused oil.
§ Screw the fan carrier assembly clockwise into the fan (hand tight only).
§ Re-assemble the fan carrier assembly onto the body and secure with the retraining screw.
§ Continue gauging.
Section 3: After the completion of gauging.
Before cleaning and storing the current meter, perform a spin test to ensure the current meter has performed as expected
during the last measurement.
To clean the current meter for storage, perform the following steps:
§ Remove the spare parts from the supplied cleaning jar and ¾ fill with white spirit.
§ Remove the fan assembly from the meter body by undoing the retraining screw and separating the body from the fan
carrier assembly.
§ Remove the fan carrier and the shaft assembly from the fan by screwing anti-clockwise (ensure shaft assembly is placed
on a clean lint-free cloth to prevent contamination).
§ Drain the old oil from the fan in a recycling container (for environmental reasons, do not pour white spirits on the ground).
§ Put the bearing end of the spindle assembly into the cleaning jar and gently agitate.
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10© 2023 | KISTERS
Maintenance
§ Fill the fan with white spirit and place your thumb over the threaded hole and shake vigorously for a few seconds.
§ Drain the white spirit into a recycling container (for environmental reasons, do not pour white spirits on the ground).
§ Remove the fan shaft assembly from the cleaning jar and blow dry.
§ Re-assemble the spindle assembly into the fan carrier.
§ Screw the fan carrier assembly clockwise into the fan (hand tight only).
§ Fit the spindle protector onto the shaft.
§ Store the fan assembly in the carrying case.
§ Drain the white spirits from the cleaning jar into a recycling container (for environmental reasons, do not pour white
spirits on the ground).
§ Return spare parts back into the cleaning container and store in the carrying case.
3.1 Service and Recalibration
§ Recalibrate the current meter every 300 hours of use or once a year whichever comes first (see KISTERS calibration
certificate for details).
§ For recalibration only, send the body and the fans that require calibration (to save weight). However, if other items needs
repair they can be sent with the body and fans.
Note: KISTERS provides a recalibration and repair service for most types of current meters.

11© 2023 | KISTERS
Troubleshooting
4 Troubleshooting
Mechanical Fault Finding
Symptom
Possible Causes
Action
Remark
Failed spin test
§ Dirty or faulty
bearings
§ Clean Bearings and try to spin
test again. If Problem persists
replace bearings.
§ Dirty bearings can be identified
towards the end of the spin test
when the fan stops suddenly.
§ Bent shaft
§ If the shaft is slightly bent
return to HS for repair.
§ If the shaft is very bent return
to HS for replacement.
§ Bent shaft can be identified by
looking at the pointed centre of
the fan during spin test. If this
point is turning off-centre this
indicates that the shaft is bent.
Electrical Fault Finding
If an electrical fault has been traced to the current meter, the following conditions should be checked using a multi-meters or
impulse counter.
Faults will be either CLOSED CIRCUIT or OPEN CIRCUIT, and if the CMC-20A counter is used, set the control switches to “ON”
and “INT” (ie. no time limit). Spin the Fan and if the audible signal sounds continuously, the fault is a “CLOSED CIRCUIT”. If no
audible signal is heard, the fault then is an “OPEN CIRCUIT”.
Closed Circuit Fault
Symptom
Possible Cause
Action
Fault occurs only when meter in water.
§ Water entering contact plug
receptacle and earth between plug
and body
§ Replace damaged plug or missing
seal (see figure 7)
Circuit closed in any magnet position,
but open with magnet removed.
§ Reed switch failed
§ Replace reed switch assembly (Figure
3)
Circuit closed without magnet in
position.
§ Reed switch damaged
§ Water damaged during handling
allowing contacts to earth onto
meter body
§ Replace reed switch assembly
§ Remove reed switch (Figure 3
No.1) and insulated contact assembly
(Figure 3 No 8). Drain or wipe
away water. Flush with alcohol or
methyl. Spirits, then air dry. Apply
silicone grease to contact surfaces
and thread on insulating sleeve
before replacing. Check damaged O-
rings (Figure 3 No 9 and10)
replace. Apply silicon grease before
fitting.
§ Check for damage to spigot through
reed switch assembly. Return to
factory for repairs.
Open Circuit Fault
Symptom
Possible Cause
Action
Open circuit between plug (11) and
insulated reed switch contact (8)
(Figure 3 ).
§ Faulty plug contact.
§ Faulty insulated contact assembly
(8) (Figure 3 ).
§ Check fit of plug in hole.
§ Remove, wipe surface clean and
check spring compression. Re-
8
8
8
8
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Troubleshooting
Symptom
Possible Cause
Action
assemble with silicone grease on all
surfaces.
No closure of reed switch contact when
magnet in position.
§ Damaged Reed Switch Assy.
§ Replace.
Reed switch operating but signal not
passing to body.
§ Faulty earth contact (12) (Figure
3).
§ Check spring compression. Remove
assembly and wipe clean contact
surfaces with silicon grease and re-
assemble.
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Repair
5 Repair
KISTERS precision instruments and data loggers are produced in quality-controlled processes. All KISTERS production and
assembly sites in Australia, New Zealand and Europe are ISO 90001 certified. All equipment is factory tested and/or factory
calibrated before it is shipped to the client. This ensures that KISTERS products perform to their fullest capacity when
delivered.
Despite KISTERS most rigorous quality assurance (QA), malfunction may occur within or outside of the warranty period. In rare
cases, a product may not be delivered in accordance with your order.
In such cases KISTERS’ return and repair policy applies. For you as a customer, this means the following:
§ Contact KISTERS using the Repair Request Form and the Declaration of Contamination made available online:
Region (Language)
Download Link
Asia–Pacific (English)
Repair Request Form (APAC)
Declaration of Contamination (APAC)
Europe, the Middle East and Africa (English)
Repair Request Form (EMEA)
Declaration of Contamination (EMEA)
Germany (German)
Repair Request Form (DE)
Declaration of Contamination (DE)
In response you will receive a reference number that must be referenced on all further correspondence and on the freight
documents accompanying your return shipment.
§ Please provide as much information and/or clear instructions within the return paperwork. This will assist our test
engineers with their diagnosis.
§ Please do not ship the goods prior to obtaining the reference number. KISTERS will not reject any equipment that arrives
without reference number; however, it may take us longer to process.
Custom requirements for items sent to KISTERS for warranty or non-warranty repairs: Check with your national customs/tax
authorities for details, processes and paperwork regarding tax exempt return of products. Typically, special custom tariff
codes are available (such as HS Code = 9802.00) that verify the item is being returned for repair and has no commercial value.
Please note that the customs invoice / dispatch documents should also clearly state: “Goods being returned to manufacturer
for repair – No Commercial value”. It is mandatory to have any returned goods accompanied by a commercial invoice on
headed paper. KISTERS reserves the right to charge the customer for time spent rectifying incorrect customs documents.
Note: Please ensure that your goods are packed carefully and securely. Damage that occurs during transit is not covered by
our warranty and may be chargeable.
For more information, see the following subsections:
§ Replacement of Cable Ends
§ Part List
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Repair
5.1 Replacement of Cable Ends
Impulse Counter End and Complete Repair
a. Strip back 140 mm of main cable insulation (1) after
shortening to new length.
b. Expose 5 mm of conductor (2) and twist strands tightly,
then solder.
c. Slide on heat shrink sleeve (3), red and black identifying
sleeves (4) and plug covers (5).
d. Push soldered conductors into plugs (6) and lock with
grubscrew (7).
e. Bring cover forward over plugs.
f. Position heat shrink sleeve centrally over grey cable
insulation and fix in place
Note: Repair to either plug end individually can be made
also, by only cutting away the damaged end and following
steps b, d & e.
Figure 5

15© 2023 | KISTERS
Repair
Current Meter Ends and Complete Repair
a. Shorten cable (1) to new length and strip outer insulation
(2) to 140 mm (red plug end) and 120 mm (black plug
end).
b. Expose 5mm of conductors (3) and twist strands tightly,
then solder.
c. Slide on heat shrink sleeve (4) red (5), and black (6)
identifying sleeves.
d. On the positive (+) end, push plug cap (7), washer (8),
rubber bush (9) and plug holder (10) over cable.
e. Lock conductor into plug pin (11), then slide back into
plug holder and screw plug cap into place.
f. Fit rubber seal (12) to plug pin.
g. For the negative (-) end, slide on black heat shrink tube
(13). Push conductor into the earth pin (14) and solder in
place. Bring heat shrink sleeve forward onto earth pin
and fix down with heat.
h. Fix down heat shrink sleeve (4) over main cable
termination.
i. Repairs can be made individually to the positive (+) end
with steps 2, 4, 5, and 6 and to the negative (-) end, by
following steps 2 and 7. However, the shortened ends of
the cable might be difficult to assemble conveniently
onto the current meter, and it is usually preferable to
reconstruct the cable as detailed in figure 6.
Figure 6

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Repair
5.2 Part List

17© 2023 | KISTERS
Repair

18© 2023 | KISTERS
Repair

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Repair

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Repair