EIJKELKAMP M1 User manual

Last change : 26.11.2008
Product no.
Revision : 1313 :
File : Arch-Orig
Mini Current Meter M1
User Manual
M-1313E
Nijverheidsstraat 9,
6987 EN Giesbeek, The Netherlands
T+31 313 880 200
[e-mail]
Iroyaleijkelkamp.com

User manual Mini Current Meter M1
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Content:
1. PRODUCT DESCRIPTION.............................................................................................3
2. SAFETY AND DANGER INSTRUCTIONS .....................................................................3
3. PARTS SURVEY.............................................................................................................3
4. CURRENT METER MOUNTINGS ..................................................................................4
5. CABLE CONNECTION...................................................................................................4
6. CHANGE OF PROPELLERS..........................................................................................5
7. STARTUP AND OIL CHANGE........................................................................................6
8. DETERMINATION OF VELOCITY..................................................................................7
9. REED-SWITCH...............................................................................................................8
10. EXCHANGE OF REED-SWITCH....................................................................................8
11. BALL BEARINGS...........................................................................................................9
12. EXCHANGE OF BALL BEARINGS................................................................................9
13. SHORTENING OF THE CABLE...................................................................................10

User manual Mini Current Meter M1
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1. Product description
The current meter M I (art. no. 1313) is provided for determination of current velocities. It
is a high quality precision measuring instrument, so please handle it carefully and consider
all points of this service manual.
2. Safety and danger instructions
Please take care, that this current meter is a precision measuring instrument, which has to
be handled carefully. Observe strictly the items in the operation and maintenance manual.
3. Parts survey
part
part no.:
part
part no.:
1 meterbody, front
24 O-ring 12x1
2 contact support
28 reed-switch
7 locking screw
60 plug cap
8 spring centering
70 plug core hose
9 pressure spring
71 O-ring 5 x 2
10 ball bearing
40 propeller 50mm dia
11 meter axle
75 rod 9mm dia
13 magnet support, cplte.
19 meterbody rear
20 clamping piece

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4. Current meter mountings
The current meter M I is mainly used with rod 9 mm diameter. The rod (3 sections, 1,5 m
long) is stored in the instrument case. The parts have to be screwed together and sticked to
the bottom part. Into the upper part of the rod the red plug (+ pole) of the connection cable is
to be inset.
The meterbody will be connected to the rod with the clamping piece (20).
On request rods with cm-division and dm-graduation are available.
5. Cable connection
Screw plug cap (60) with thread (minus pole) on the thread of the contact support (2). Insert
second wire with banana plug (plus pole - red) into the rod from above. Connect cable to the
impulse counter according to colours of the plugs and sockets.

User manual Mini Current Meter M1
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6. Change of propellers
The propellers are manufacturerd of high quality seawater resistant aluminium and are
anodized. The propeller will be slipped on the slot of the axle. Change of propellers in the
same way.
Attention: do not use force
Attention!
Please control regularly that the propeller fits well to the axis, so thatit cannot go lost.
If necessary, you can bend apart the axis carefully with a knife, till the propeller can be
fixed properly on the axis.

User manual Mini Current Meter M1
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7. Startupand oil change
The meter axle with ball bearings is running in
a chamber, filled with special oil.
The delivery of the instrument is without oil
filling. Do not start the current meter before
filling special oil into the chamber.
Remove oil when putting out of operation for a
long period.
Attention:
Before starting, please check whether the oil
chamber has been filled, otherwise refill it. Go
ahead as follows:
a) open locking screw (7) with socket wrench
(97)
b) take out meter axle (11) with ball bearing
(10),
pressure spring (9) and spring centering
(8). Protect ball bearing from dirt and
dust.
c) remove used oil. Keep meterbody (1) in
sloping position - connection thread of
the contact support is on the side - and
fill new oil into the oil chamber, just up
to 25 mm below the rim.
d) insert the meter axle (11) and ball
bearings (10). Take care, that the
magnet support (13) is fastened tight to
the meter axle (11).Oilfilling should raise
up to the upper rim of the oil chamber.
Wipe off overflow of oil. Rescrew
locking screw (7) with socket wrench
(97).

User manual Mini Current Meter M1
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8. Determination of velocity
The calibration of the current meter is determined individually with each propeller in a
hydraulic towing channel. The current velocity (v) is determined according to the calibration
equation:
v = k. n + Δ
v = flow velocity m/sec.
n = propeller revolutions per second
k = hydraulic pitch of the propeller (cm)
Δ= characteristic of the current meter

User manual Mini Current Meter M1
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9. Reed-switch
The counting impulse, necessary for measuring, will be effected by means of the reed-switch
and the magnet, once per revolution of propeller.
10.Exchange of reed-switch
Separate front part of meterbody (1) from rear part (19) by screwing. Carefully pull out reed-
switch (28) with tension spring. Insert complete new reed-switch.
Take care that the contact-surfaces of both meterbody parts are clean, and the O-ring (24)
perfectly fits the notch in the rear part of the meterbody (19).
Finally screw both parts together manually.

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11.Ball bearings
Extremely smooth running ball bearings are used.
They have to be protected absolutely from dirt and dust,
otherwise the instrument will not run smoothly.
In case there should penetrate dirt into the ball bearings
during exchange of oil, clean the ball bearings in purified
benzine only.
12. Exchange of ball bearings
Push off magnet-support (13) and carefully push securing-
disc (1.9 DIN 6799) out of the groove. Remove damaged ball
bearings (10), pressure spring (9) and spring centering (8)
from the meteraxle.
Clean ball bearings from dirt as described in item 10.
Mount all parts vice-versa.

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13.Shortening of the cable
If the cable is damaged at the plug or has to be shortened, go
ahead as follows:
a) cut off the damaged part of the cable
b) insulate cable according to drawing and twist wire together.
c) push plug cap (60) and then plug hose (62) on the cable.
Twist the wire and push it into the multicore cable end (70),
which is included within the maintenance material.
d) compress wire and multicore cable end or solder it Please
take care, that the front side is flat.
e) check whether wire and multi core cable end are fixed. Then
push plug hose (62) over multi core cable end (70).
For using the meterbody with a rod of 20 mm dia. (FI 170.47,
.48, .50 resp. . 52), a special clamp (90) is available. Both,
relocating device (FI 170.55) and red plug (plus pole / 65) for
picking-up the impulses are fastened on this special clamp.