Valeport TideMaster User manual

TideMaster - Operating Manual
Document ID
MANUAL-1094978189-1 | issue 1.1
Date:
July 2021
This confidential document was prepared by the staff of Valeport Limited, the Company, and is the property
of the Company, which also owns the copyright therein. All rights conferred by the law of the copyright and
by virtue of international copyright conventions are reserved to the Company. This document must not be
copied, reprinted or reproduced in any material form, either wholly or in part, and the contents of this
document, and any method or technique available there from, must not be disclosed to any other person
whatsoever without the prior written consent of the Company.
© 2021 Valeport Ltd
Valeport Ltd
St Peter's Quay
Totnes TQ9 5EW
United Kingdom
Phone:
email:
Web:
[phone]
[email protected]
www.valeport.co.uk
As part of our policy of continuous development, we reserve the right to alter, without prior notice, all
specifications, designs, prices and conditions of supply for all our equipment

Contents
© 2021 –Valeport Ltd
Page | b
Contents
1Introduction................................................................................................. 1
1.1 Description ...........................................................................................................1
1.2 Features...............................................................................................................2
1.3 Mounting Template...............................................................................................3
1.4 Specifications .......................................................................................................3
2Installation................................................................................................... 5
2.1 Equipment Supplied..............................................................................................5
2.2 Setting Up.............................................................................................................5
2.2.1 TideMaster Logging Unit..............................................................................................5
2.2.2 Pressure Transducer ...................................................................................................5
2.2.3 Shortening the Transducer Cable................................................................................6
2.3 VRS20 Radar Level Sensor..................................................................................6
2.3.1 Boom Mounting............................................................................................................7
2.3.2 Direct Mounting............................................................................................................8
2.3.3 Levelling.......................................................................................................................9
2.3.4 Wiring ...........................................................................................................................9
2.3.4.1 Junction box.................................................................................................................9
2.4 Calibration ..........................................................................................................10
2.4.1 Pressure Sensor ........................................................................................................10
2.4.2 VRS-20 Radar Level Sensor .....................................................................................10
3Powering the Unit .....................................................................................11
3.1 Alkaline Battery Warning ....................................................................................11
3.2 To Turn the TideMaster On.................................................................................11
3.2.1 Delayed Start .............................................................................................................11
3.3 To Turn the TideMaster Off.................................................................................11
3.4 Changing Batteries.............................................................................................12
3.5 Battery Life Scenarios.........................................................................................13
3.5.1 Scenario A..................................................................................................................13
3.5.2 Scenario B..................................................................................................................13
3.5.3 Scenario C..................................................................................................................14
3.5.4 Scenario D..................................................................................................................14
4Running TideMaster Express...................................................................15
4.1 Installation ..........................................................................................................15
5Communications.......................................................................................16
5.1 RS232 Communications.....................................................................................16
5.2 Bluetooth Communications.................................................................................16
5.2.1 Specification...............................................................................................................16
5.2.2 Pairing........................................................................................................................17

Contents
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© 2021 –Valeport Ltd
6Set Up.......................................................................................................19
6.1 Interrupting TideMaster.......................................................................................19
6.2 Set Up TideMaster Using the Control Panel .......................................................19
6.2.1 Instrument Set Up......................................................................................................19
6.2.2 Sampling Set Up........................................................................................................21
6.2.3 Logging Set Up ..........................................................................................................21
6.2.4 Output Set Up ............................................................................................................22
6.2.5 Reset option...............................................................................................................22
6.3 Set Up TideMaster Using TideMaster Express ...................................................22
6.3.1 Communicate.............................................................................................................23
6.3.2 Sampling Set Up........................................................................................................24
7Calibration.................................................................................................27
7.1 Pressure Sensor.................................................................................................27
7.1.1 Pressure/Depth Relationship.....................................................................................27
7.1.2 User Calibration .........................................................................................................28
7.1.3 Site Calibration...........................................................................................................30
7.2 Radar Sensor .....................................................................................................35
7.2.1 Working Range ..........................................................................................................35
7.3 Using TideMaster Control Panel.........................................................................36
7.3.1 Pressure Sensor Calibration......................................................................................36
7.3.2 Radar Sensor Calibration ..........................................................................................36
8Data Display in TideMaster Express........................................................ 37
8.1 Real Time Data...................................................................................................37
8.1.1 File Period..................................................................................................................37
8.1.2 Daily File Location......................................................................................................37
8.1.3 Backup File Location..................................................................................................37
8.1.4 Remote Data File Location........................................................................................37
8.1.5 Open Prediction File ..................................................................................................37
8.2 Data Download...................................................................................................38
8.3 Data Display - TideMaster Express.....................................................................38
8.3.1 Simple Display ...........................................................................................................39
8.3.2 Scroll Display .............................................................................................................39
8.3.3 Graph Display ............................................................................................................40
8.3.4 Surge Graph Display..................................................................................................40
8.3.5 Last Data Display.......................................................................................................41
8.3.6 Wind Rose Display.....................................................................................................41
8.3.7 Prediction Files...........................................................................................................41
8.3.8 Preset Displays & Display Handling..........................................................................42
9Data Requests and Output Formats........................................................ 43
9.1 Stop Command...................................................................................................43
9.2 Run Commands..................................................................................................43
9.3 Logger Control....................................................................................................43
9.4 Data Formats......................................................................................................44
9.4.1 Logged Data (Pressure Tide & Met)..........................................................................44
9.4.2 Logged Data (Pressure Tide & CT)...........................................................................45
9.4.3 Logged Data (Radar Tide and Met)...........................................................................46
9.4.4 Logged data (Radar Tide and CT).............................................................................47
9.4.5 Real Time Data..........................................................................................................48

Contents
© 2021 –Valeport Ltd
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10 Wiring Information ....................................................................................51
10.1 Tide (Pressure)...................................................................................................51
10.2 Tide (Radar) .......................................................................................................51
10.3 WindSONIC........................................................................................................52
10.4 METPAK II..........................................................................................................52
10.5 MaxiMet..............................................................................................................52
10.6 miniCT................................................................................................................53
10.7 3m Y Lead (RS232)............................................................................................53
11 Declaration of Conformity - TideMaster...................................................54
11.1 UKCA Certificate ................................................................................................54
11.2 EU CE Certificate ...............................................................................................55

Section 1 | Introduction
Page | 1
©2021 –Valeport Ltd
1 Introduction
This manual covers the basic specifications, deployment and maintenance procedures for the following
products
•TideMaster
This product has been designed to operate with Valeport’s own TideMaster Express operating software.
1.1 Description
The TideMaster tide gauge has been designed to provide an accurate, versatile and easily deployed tide
gauge for use in short or long-term hydrographic survey operations. It can be configured with either a
traditional vented pressure sensor or a VRS-20 radar level sensor.
OLED control/display panel, Bluetooth and Secure Digital (SD) card memory combined with low power
consumption and user selectable sampling regime allow up to a year’s autonomous operation, whilst optional
telemetry packages extend the capabilities for real time operations. TideMaster is compatible with the
MIDAS Surveyor GPS Echo Sounder system and a range of hydrographic processing software.
The logger is powered by 4 “C” type cells, which, together with the SD memory allows operation for over 1
year of sampling at a 15 minutes cycle with 40 second bursts (pressure sensor system, with Display and
Bluetooth disabled).
The TideMaster can be configured using either the optional Control/Display panel or using TideMaster
Express (PC software package). Both allow the TideMaster to be configured, calibrated and the recorded
data to be extracted and visualised.
The TideMaster can also run one additional sensor. The additional sensor will be run on the same sampling
pattern as the tide sampling pattern. It can be specified with:
Gill Windsonic:
Wind Speed/Direction
Gill MetPak II:
Wind Speed/Direction, Air Pressure, Air Temperature, Humidity
Gill MaxiMet
Wind Speed/Direction (corrected), Air Pressure, Air Temperature, Humidity
Valeport MiniCT:
Water Temperature, Conductivity
A variety of telemetry options are available for remote access and delivery of data. Support for Multi-gauge
networks is supported in the TideMaster Express software.

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1.2 Features
TideMaster shown below with optional OLED control display panel. Non-Display model is identical other
than the absence of the display and the lower three control buttons.

Section 1 | Introduction
Page | 3
©2021 –Valeport Ltd
1.3 Mounting Template
1.4 Specifications
Pressure Transducer
Type:
Vented strain gauge, with stainless steel mounting bracket.
Range:
Standard 10dBar (approx 10m), with 20m cable.
Other pressure ranges and cable lengths are available.
Accuracy:
±0.1% Full Scale.
Calibration:
Held within logging unit.
Dimensions:
18mm diameter x 80mm.
VRS-20 Radar Level Sensor
Type:
Pulsed K-band radar level sensor
Minimum Range:
0.8 m
Maximum Range:
20 m
Beam Angle:
±6°
Frequency:
25 GHz
Accuracy:
±10 mm
Precision:
1 mm
Dimensions
Length:
255mm
Width:
130mm
Height:
130mm (75mm without mount)
Weight:
~2 kg

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TideMaster - Logging Unit
Housing:
Injection molded housing, waterproof to IP67 (1m for 30 minutes) with injection
molded mounting bracket.
Display:
Optional 128x64 OLED keypad display for configuration and data display.
Internal Power:
4 "C" cells within separate sealed compartment.
Tool-less battery change.
Up to a year of autonomous sampling.
External Power:
9-28 V DC
Memory:
512 MB SD card memory allowing for effectively unlimited storage.
Sampling:
Raw data sampled at 8Hz and logged as average over burst.
6 pre-programmed burst modes + custom sampling mode.
Continuous Sampling at 1 Hz
Switching:
Power switch on unit. LED to indicate operation.
Resolution:
Data logged to 1mm resolution.
Comms:
Integral Bluetooth for short range telemetry and communications
RS232/RS485 for cabled communication
Dimensions:
Housing
47mm x 110mm x 197mm
Bracket
35mm x 210mm x 159mm
Mounted
62mm x 210mm x 197 mm
Weight:
1.1kg (approx) including batteries.

Section 2 | Installation
Page | 5
©2021 –Valeport Ltd
2 Installation
Ensure unit is not exposed to high heat levels due to sun strike etc. –user to provide sun screen to
prevent extreme temperatures if required
2.1 Equipment Supplied
The basic TideMaster system comprises the following:
•TideMaster Logger unit, with batteries
•TideMaster Mounting Bracket
•Data lead
•Windows software (TideMaster Express)
There is then an option of
•Pressure Transducer with 20m vented signal cable and mounting bracket
or
•VRS-20 Radar Level Sensor with 5m of cable, junction box and mounting bracket
2.2 Setting Up
2.2.1 TideMaster Logging Unit
The TideMaster and mounting bracket must be mounted ABOVE the highest expected water line
(HAT)
The unit is supplied with a mounting bracket and screws for the user to fix the unit to a convenient surface.
A template for the mounting screws is supplied in Section 12.
The TideMaster is fixed to the wall bracket with the use of the supplied metal T-bar. The TideMaster should
be placed in the bracket and the metal bar slid into place from the top. The bar can be locked in place with
the use of the supplied screw. (NB. This can only be done before mounting the bracket to the wall)
For removal of the bar, it can be pushed up from the bottom of the housing until it can be reached at the top
and removed. When removing the bar, care should be taken to support the TideMaster.
If the logger is installed, but not in use [i.e. cables not fitted] then ensure the connector covers are fitted to
protect the pins.
2.2.2 Pressure Transducer
A mounting bracket is provided for the transducer. The transducer should be located below the lowest
expected water level so that it does not dry out. For reference, the transducer pressure diaphragm [and
therefore the pressure reference] is marked by the dark band on the transducer. A screw-on end cap
protects the transducer. If this is removed for cleaning out of sediment, then care should be taken not to
damage the diaphragm itself.
The transducer cable should be attached to convenient parts of the mounting structure with cable ties or
clips [not supplied]. Care should be taken not to squeeze or crush the cable so that the vented tube within
the cable becomes closed.
The transducer cable should be connected to the connector on the TideMaster marked “TIDE”.
The transducer is provided with an integral 20m length of signal cable. Excess length can be coiled up, or
the cable shortened.

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2.2.3 Shortening the Transducer Cable
If a user wishes to shorten the signal cable, then this can be done, but care has to be taken in re-terminating
the connector in order to ensure the integral vent tube is properly terminated in the connector. If the cable is
shortened, the pressure calibration will alter slightly, but provided the site calibration is carried out, any
variations caused by the shortening of the cable will be taken account of. See Section 7.3 for Site calibration
method.
2.3 VRS20 Radar Level Sensor
The basic mounting requirements for the VRS-20 are a sturdy, stable surface or boom that does not
experience any significant vertical movement. The surface does not necessarily need to be level as the
VRS-20 mounting bracket features two axis adjustment.
The VRS-20 must have a clear view of the water surface throughout the expected working range with no
obstructions or fixed reflectors. The horizontal footprint of the radar is defined by the beam angle which is ±6
degrees. This approximates to a footprint radius of ~1/10th of the range.
Range
Footprint Radius
1
0.1m
5
0.53m
10
1.05m
15
1.58m
20
2.1m
The vertical datum of the VRS-20 is the front face of the instrument and all ranges are measured from this
point. With the input of a datum offset, the range values measured by the VRS-20 can be transformed to a
height value.

Section 2 | Installation
Page | 7
©2021 –Valeport Ltd
2.3.1 Boom Mounting
The radar is supplied with a stainless-steel
clamp (as pictured) for attaching to
railings/scaffold poles

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Page | 8
See example of boom constructed from
standard scaffolding parts and attached to
existing railing structure
2.3.2 Direct Mounting
The clamp can be removed and the stainless-steel adaptor plate fitted directly to a mounting surface if
required. The diagram below gives the dimensions of the adaptor plate in millimetres.

Section 2 | Installation
Page | 9
©2021 –Valeport Ltd
2.3.3 Levelling
The VRS-20 needs to be parallel to the water surface for reliable and consistent operation. To aid this, the
sensor has been fitted with two bubble levels. Once the clamp or mounting bracket is firmly fixed to the
mounting surface the two-axis adjustment on the bracket can be adjusted until the VRS-20 is level.
2.3.4 Wiring
The VRS-20 is supplied as standard with a 5m cable (Other lengths are available on request). The cable is
glanded into the VRS-20 at the sensor end, and issued as unterminated cable at the other end. This is to
allow easy routing of the cable through walls/bulkheads etc.
2.3.4.1Junction box
The cable from the VRS-20 sensor terminates into a small junction box.
The bare cable from the VRS-20 should be passed through
the cable gland and terminated in the push fit connectors with
reference to the wiring schedule.
To insert the bare wires into the terminals, push in the orange
tab in with a fine screwdriver and release to clamp the wire.
The output from the junction box will depend on the
configuration of the VRS-20. Refer to section Wiring
Information

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2.4 Calibration
2.4.1 Pressure Sensor
If the TideMaster is supplied with a pressure sensor, it will be shipped with a factory calibration, which
provides an output of pressure in decibars and takes out any non-linearity in the transducer characteristic.
Note that the pressure calibration is specifically for a combination of TideMaster and transducer, and the unit
and transducer serial numbers are held in the logger memory. If the transducer is changed, the pressure
calibration will be slightly in error, but the system can still be used provided an in-situ calibration of depth
against pressure output is made.
The user can add this calibration to provide output in metres [or feet] above a datum. This secondary
calibration takes the form of a Gain factor [distance per dBar] and Offset [transducer position with
respect to datum]. In order to determine this secondary calibration, some on site readings will need to be
taken to establish the relationship between decibars and depth with respect to a datum for the particular site.
The exact calibration is affected by transducer offset, water density and gravity.
The transducer is temperature compensated, but this compensation does rely on the temperature of all parts
of the transducer being the same, so when the transducer is first put into water, time must be allowed for the
temperature to stabilize before any calibration measurements are taken. Five minutes should be adequate.
2.4.2 VRS-20 Radar Level Sensor
The VRS-20 radar sensor measures distance to a water surface, this measurement is factory calibrated and
the calibration is held within the radar sensor. This calibration is independent of environmental conditions.
To transform this range to a tide height the offset between the Radar Datum and a Local Datum must be
established. The relationships between range, working range, tide height, radar datum and local datum are
shown in section 2.3.
2.4.2.1 Working Range
To reduce the possibility of spurious returns and improve the data quality, a valid working range can be set
on the VRS-20. The VRS-20 will ignore any returns from outside of this range so it is important to ensure the
minimum working range is set to a level above Highest Astronomical Tide and the maximum working range
to a level below Lowest Astronomical Tide.

Section 3 | Powering the Unit
Page | 11
©2021 –Valeport Ltd
3 Powering the Unit
3.1 Battery Warning
Batteries are prone to gassing and in the case of Alkaline batteries
leaking potassium hydroxide, a caustic agent that can cause
respiratory, eye, and skin irritations. You can reduce the risks by not
mixing battery types in the same device and by replacing all the
batteries at the same time and prior to full discharge
Do not mix old and new batteries or battery types. Doing so will
reduce overall performance and may cause battery leakage or
rupture. We recommend replacing all the batteries at the same time
3.2 To Turn the TideMaster On
The TideMaster switches on when the power button on the top right of the front panel is pressed (quick
press). The LED to the left of the panel will flash ten times in rapid succession to indicate the unit is
initialising.
The unit will then fall into its default sampling mode (or the last set mode). The start of a data collection
burst is denoted by a single flash. The end of the burst is denoted by five flashes in quick succession. The
burst modes sample at fixed intervals and so it may be some time before the first burst is collected. During
this time the unit will be in sleep mode.
For example:
In B2 mode (6 min interval, 40 second burst) the TideMaster will collect data at:
00/06/12/18/24/30/36/42/48/54
minutes past the hour.
In B4 mode (15 min interval, 40 second burst) the TideMaster will collect data at
00/15/30/45
minutes past the hour.
3.2.1 Delayed Start
There is no delayed start mode and the TideMaster should only be powered on when ready to collect data.
3.3 To Turn the TideMaster Off
Press and hold the Power button until the LED light comes on. On the display version a powering off
message will be displayed. When the LED light goes out, the TideMaster has powered off.
The TideMaster can only be turned off in sleep or sampling mode.
If the TideMaster is interrupted either via PC control or via the integral display this mode will have to
be exited before the TideMaster can be turned off

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Page | 12
3.4 Changing Batteries
Changing batteries in the TideMaster is very simple process.
All data is saved in non-volatile Flash memory, so data is secure during the battery change process
The system clock does require battery power in order to maintain the current date and time settings, but the
instrument is fitted with a capacitor system to maintain a supply to the clock for a period of not less than 20
minutes after the removal of the battery. This should be more than sufficient time to allow the battery to be
changed.
In the event that clock settings are lost during battery change, or after an extended period of storage with no
batteries fitted, then please use TideMaster Express or the control panel to reset the clock.
Dry the top of the housing to ensure no water enters the battery compartment during the process.
Undo the thumbscrews on the top of the housing. They are fitted with a retaining clip and cannot be
completely removed.
Gently slide the compartment lid up and out of the battery compartment. The lid is fitted with a retaining
cord.
Remove any residual moisture from around the seal.
Replace the 4 C cell batteries, taking care to insert them in the correct orientation.
Take note of the orientation markings on the battery board. TideMaster will not operate if batteries
are incorrectly installed
Check the O-ring on the battery compartment lid for damage and debris. Clean it and smear lightly with
silicon grease.
Replace the compartment lid and push gently into place. Tighten the thumbscrews –finger tight is sufficient.
For planned periods of extended storage, the batteries should be removed from the instrument to
prevent accidental leakage

Section 3 | Powering the Unit
Page | 13
©2021 –Valeport Ltd
3.5 Battery Life Scenarios
The standard alkaline cells in the TideMaster have a nominal capacity of 6000mAh. Assuming 75%
efficiency, this gives a usable life of 4500mAh. Use of lithium cells will extend these lifetimes.
In Burst mode, the unit cycles between ‘Run’ and ‘Sleep’ modes, making calculations complex. The tables
below summarise the battery life of a scenario in each of the pre-set patterns.
Bluetooth connectivity is based on the Bluetooth being available for pairing. Pairing and sending/receiving
data from the TideMaster draws more power and prevents the unit from entering sleep mode.
It is recommended that unless externally powered, Bluetooth connections are terminated when not
required
3.5.1 Scenario A
•Druck Pressure Transducer - Fitted
•Bluetooth Off
•Display Off
•Gill Windsonic –Not Fitted
Mode
Pattern
Battery Life
B1
30 seconds per 1 minute
56 days
B2
40 seconds per 6 minutes
231 days
B3
40 seconds per 10 minutes
356 days
B4
40 seconds per 15 minutes
487 days
B5
60 seconds per 30 minutes
598 days
3.5.2 Scenario B
•Druck Pressure Transducer - Fitted
•Bluetooth Off
•Display On Period –5s
•Gill Windsonic –Not Fitted
Mode
Pattern
Battery Life
B1
30 seconds per 1 minute
57 days
B2
40 seconds per 6 minutes
231 days
B3
40 seconds per 10 minutes
356 days
B4
40 seconds per 15 minutes
488 days
B5
60 seconds per 30 minutes
598 days

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Page | 14
3.5.3 Scenario C
•Druck Pressure Transducer –Fitted
•Bluetooth On –Every burst
•Display Period = 5s
•Gill Windsonic –Not Fitted
Mode
Pattern
Battery Life
B1
30 seconds per 1 minute
13 days
B2
40 seconds per 6 minutes
58 days
B3
40 seconds per 10 minutes
95 days
B4
40 seconds per 15 minutes
140 days
B5
60 seconds per 30 minutes
182 days
3.5.4 Scenario D
•Druck Pressure Transducer –Fitted
•Bluetooth On –Every burst
•Display Period = 5s
•Gill Windsonic –Fitted
Mode
Pattern
Battery Life
B1
30 seconds per 1 minute
4.7 days
B2
40 seconds per 6 minutes
20 days
B3
40 seconds per 10 minutes
34 days
B4
40 seconds per 15 minutes
51 days
B5
60 seconds per 30 minutes
67 days
All battery calculation figures are estimated, and may vary according to deployment temperature and
the inherent battery variability.
Valeport accepts no liability for the failure of a battery to last for the expected lifetime.

Section 4 | Running TideMaster Express
Page | 15
©2021 –Valeport Ltd
4 Running TideMaster Express
TideMaster Express is Valeport developed software for use with the TideMaster tide gauge. It is designed
for use in single gauge deployments as well supporting tide gauge networks.
The program allows the user to configure the instruments, view data in real time using a selection of
displays, and extract and view logged data from logging instruments.
Additional Features of TideMaster Express:
•Support for up to 10 station tide gauge network.
•Support for multiple serial inputs(Cable, Bluetooth, GSM/GPRS, Radio)
•Support for UKHO prediction files (.mt04 format)
4.1 Installation
TideMaster Express has been designed for easy installation. It is compatible with Windows 10, Windows
XP, Windows Vista and Windows 7/8. Open the install package and follow the on screen instructions.
Once Installation is Complete, start TideMaster Express by double clicking on the desktop icon.

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5 Communications
5.1 RS232 Communications
Communication with TideMaster is via the TideMaster Express software. The unit can also be interrogated
by a terminal program such as HyperTerminal. Details of the commands that can be manually sent and
received are provided in Section 9
The data cable supplied with the TideMaster is terminated with a 9 pin serial connector. If no serial port is
available on the host PC then a USB-Serial adaptor is supplied with the unit.
Communication parameters are factory set to 115200 Baud, 8 data bits, 1 stop bit, no parity.
5.2 Bluetooth Communications
The TideMaster is also fitted with a Bluetooth communications chip. The system allows a wireless link to be
established between an instrument and the operator’s PC, performing exactly as if the instrument were
connected to the PC via a serial cable.
Before Bluetooth communications can be established it is necessary to pair the TideMaster with the PC to be
communicated with. A TideMaster can be paired with multiple PC’s but can only be connected to one PC at
a time.
Bluetooth communication will seriously deplete the battery lifetime.
It is recommended that unless mains powered, Bluetooth connections are disconnected when not
required
5.2.1 Specification
5.2.1.1 Product Description
The OBS418 and OBS419 are stand-alone Classic Bluetooth modules with UART logic level interface for
fast, secure, and transparent serial data transmissions up to 150 meters. With the embedded Bluetooth
stack, you can be up and running quickly as there is no need for a driver or stack in the host.
5.2.1.2 Approvals
The modules are fully Bluetooth qualified and provide modular radio type approvals for the US, Europe,
Japan and Canada:
•(FCC, R&TTE, MIC, IC).
•The modules are also compliant with EMC, Safety
The operating temperature range is –30°C to +85°C.
5.2.1.3 Features
•OBS419: v2.1 + EDR (Classic Bluetooth)
•OBS419: 950 kbps