Velleman K6001 User manual

TEMPERATURE SENSOR
K6001
ILLUSTRATED ASSEMBLY MANUAL H6001IP-2
Total solder points: 71
Difficulty level: beginner 12345 advanced
ForusewithourK6000or
K6002kits.

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This kit has been developed especially to be combined with our K6000 or K6002 in order to create a tem-
perature regulating and temperature control system. Combined with the K6000 kit, a completely programma-
ble thermostat can be assembled. The use of a separate sensor offers the advantage of making the distance
between the controller and the sensor irrelevant.
Specifications:
 Temperature range of the transmitter : -40°C to 150°C.
 Pulse width modulation : 200µs / °C.
 Generated pulse width :
- at –40°C : 2ms (+/- 500µs adjustable)
- at 150°C : 40ms (+/- 2500µs adjustable)
 Linearity from –10°C to 50°C : better than 0,5%.
 Full scale : better than 2%.
 Tested up to 50m (distance between sensor and controller)
 Output : 15mA current loop
 Supply voltage : 12VDC (+/- 2V) / 20mA Max.
 PCB dimensions: 45 x 47mm (1.8" x 1.9")
Features & Specifications

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Assembly hints
1. Assembly (Skipping this can lead to troubles ! )
Ok, so we have your attention. These hints will help you to make this project successful. Read them carefully.
1.1 Make sure you have the right tools:
• A good quality soldering iron (25-40W) with a small tip.
• Wipe it often on a wet sponge or cloth, to keep it clean; then apply solder to the tip, to give it a wet look. This is called ‘thinning’ and will
protectthe tip, and enables youto makegoodconnections. Whensolder rollsoff the tip,it needs cleaning.
• Thin raisin-core solder. Do not use any flux or grease.
• A diagonal cutter to trim excess wires. To avoid injury when cutting excess leads, hold the lead so they
cannot fly towards the eyes.
• Needle nose pliers, for bending leads, or to hold components in place.
• Small blade and Phillips screwdrivers. A basic range is fine.
For some projects, a basic multi-meter is required, or might be handy
1.2 Assembly Hints :
⇒ Make sure the skill level matches your experience, to avoid disappointments.
⇒ Follow the instructions carefully. Read and understand the entire step before you perform each operation.
⇒ Perform the assembly in the correct order as stated in this manual
⇒ Position all parts on the PCB (Printed Circuit Board) as shown on the drawings.
⇒ Values on the circuit diagram are subject to changes.
⇒ Values in this assembly guide are correct*
⇒ Use the check-boxes to mark your progress.
⇒ Please read the included information on safety and customer service
* Typographical inaccuracies excluded. Always look for possible last minute manual updates, indicated as ‘NOTE’ on a separate leaflet.
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Assembly hints
1.3 Soldering Hints :
1- Mount the component against the PCB surface and carefully solder the leads
2- Make sure the solder joints are cone-shaped and shiny
3- Trim excess leads as close as possible to the solder joint
REMOVE THEM FROM THE TAPE ONE AT A TIME !
AXIAL COMPONENTS ARE TAPED IN THE CORRECT
MOUNTING SEQUENCE !
You will find the colour code for the resistances and the LEDs in the HALG
(general manual) and on our website: http://www.velleman.be/common/service.aspx

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 R1 : 240K (2 - 4 - 0 - 3 - 1)
 R3 : 3K (3 - 0 - 0 - 1 - 1)
 R4 : 4K7 (4 - 7 - 0 - 1 - 1)
 R5 : 10K (1 - 0 - 0 - 2 - 1)
 R6 : 1K8 (1- 8 - 0 - 1 - 1)
1. Metal film resistors
R...
Construction
 D1 : 1N4007
4. Diode. Watch the polarity !
 C1 : 470pF (471)
 C2 : 470pF (471)
2. Capacitors.
C...
CATHODE D...
 IC1 : 8p
 IC2 : 16p
3. IC socket. Watch the
position of the notch!
 R2 : 18K (1 - 8 - 0 - 2 - 1)
 R7 : 1K8 (1 - 8 - 0 - 1 - 1)
 Attention : because one of the
connections of both R2 and R7
is a measuring point, it is advis-
able to take care that the body of
the resistors is on the largest
circle of the pcb overprint.
5. Metal film resistors
R...
 R8 : 560 (5 - 6 - 1 - B)
6. Resistor
R...

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Construction
 C3 : 470nF (µ47)
8. Capacitor.
 RV1 : 1K (OFFSET)
 RV2 : 200K (ZERO)
 RV3 : 5K (GAIN)
Offset : Zero-setting of the sensor.
Zero : Calibration at zero degrees.
Gain : Maximum temperature
calibration.
7. Multiturn trimmers
RV...
RV...
 C4 : 10µF
 C5 : 10µF
 C6 : 10µF
 C7 : 220µF
10. Electrolytic Capacitors.
Watch the polarity !
C...
 J1 : 2p + 3p
9. Terminal block connectors
 IC1 : TLV721 or eq.
 IC2 : 3524 or eq.
11. IC’s. Watch the position
of the notch!

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Preparing the sensor
 Cut two 5cm pieces of the supplied copper wire (fig. 1.1). Using a knife, remove the varnish of both
pieces of wire over some 3mm from the ends and tin the ends (fig. 1.1)
 Cut the connections of the KTY11, KTY81-22 sensor or eq. at 3mm (fig. 1.2)
 Solder both copper wires to the sensor (fig. 1.3)
12. Preparing the sensor
Fig. 1.1
Fig. 1.3
Fig. 1.2

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 Cut off a piece of shrinking tube with a length equal to 5cm
 Slide the shrinking tube over the copper wires and OVER the sensor (fig. 1.4)
 Heat the shrinking tube using a hair dryer or, better still, using a paint stripper.
 Connect the transmitter (type KTY11, KTY81-22 or equivalent) with the points SENSOR of the pcb, using
a piece of screened wire (+/- 50cm). The polarity is of no importance.
Fig. 1.4
Preparing the sensor

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 IMPORTANT : First have the circuit "warmed up" for about 10 minutes before starting adjusting!
 Connect the transmitter (type KTY11, KTY81-22 or equivalent) with the points SENSOR of the pcb, us-
ing a piece of screened wire (+/- 50cm). The polarity is of no importance.
 Connect a DIGITAL measuring apparatus between the two connection wires of R2 and R7.
 Connect 12VDC to the points +VS and -VS.
REMARK : Be careful to not touch the circuit with your hands while adjusting it, because this could cause
noise at its output, and consequently a very unstable read out.
 Fill a glass with ice cubes and let them melt a little until you get ice-water.
 Plunge the transmitter into the melting ice-water (0°C). Take care that the connection wires of the trans-
mitter do not touch the water.
 Adjust the OFFSET trimming potentiometer RV1, so that the meter indicates 0V (possibly select a more
sensitive measuring range) and wait until the indication becomes stable.
 THIS ADJUSTMENT IS VERY IMPORTANT, SO CARRY IT OUT VERY CAREFULLY!
Adjustment & use
13. Adjustment & use

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Adjustment & use
Further adjustment with the controllers such as K6000, K6002 a. o. :
 Connect the output of the sensor (OUT + and -) with the points IN (+ and -) of the controller (this can be
sensor 1 to 4 in the case of K6000)
 Plunge the transmitter into the melting ice again and adjust the ZERO trimming potentiometer RV2 so
that the indication for this sensor indicates 0°C, and wait until the indication remains stable.
When using the controller as a room thermostat, you better adjust the maximum indication against body tempera-
ture, using the GAIN trimming potentiometer. It is advisable to verify the temperature at the place of the sensor
with a clinical thermometer.
REMARK : If the sensor is intended to be used for measuring liquid temperatures, it has to be insulated by
enclosing it with silicone or glue.
In case you want higher accuracy above 40°C, then calibrate the sensor in a known source of heat e.g. boiling
water (100°C).
 REPEAT THE FULL ADJUSTMENT PROCEDURE AT LEAST ONE MORE TIME!
 With temperatures under 0°C and above 70°C it is advisableto not install the electronic circuitry(pcb
with components) near the transmitter.
 The specifications are indicative and can differ from one transmitter to another.

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The pcb is made in such a way that it easily can be built into a standard wall box, on a blind cover plate.
 Make a hole in the cover plate to pass the sensor (KTY11, KTY81-22 or eq.) through. The sensor
shouldn't touch the cover plate.
 For making the electrical connections, use ordinary wiring or telephone wire of 0.5mm.
 For feeding the sensor use an unstabilised 12VDC power supply, which is able to supply at least 20mA
(you easily can make it yourself, see fig. 1.5). With the K6000 controller, a power supply on the controller
itself can be used. This power supply is able to feed up to four sensors.
14. Mounting and connecting
Connection
Fig. 1.5

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15. PCB layout.
PCB

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16. Diagram
Diagram

Modifications and typographical errors reserved
© Velleman Components nv.
H6001IP - 2004 - ED2 (rev 1)
VELLEMAN Components NV
Legen Heirweg 33
9890 Gavere
Belgium Europe
www.velleman.be
www.velleman-kit.com
5410329 291495