Velleman K6001 User Manual

TEMPERATURE SENSOR

K6001

ILLUSTRATED ASSE MBL Y MANUAL H6001IP-2

Total solder points: 71
Difficulty level: beginner 1  2 3  4 5  advanced

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This kit has been developed especially to be combined with our K6000 or K6002 in order to create a tem­perature regulating and temperature control system. Combined with the K6000 kit, a complet el y programma­ble 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:

 Temperatur e range o f the tran smitter : -40 °C to 150°C .
 Pulse width modulation : 200µs / °C.
 Generated pulse width :

- at –40°C : 2ms ( +/- 500 µs adjustable)

- at 150°C : 40ms (+ /- 25 00µs adju stable)

 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 spon ge o r c loth , to ke ep it c lean ; th en apply so lder to th e t ip, to g ive it a wet look. This is called ‘thinning’ and will

protect the t ip, an d enab les you t o make good conn ections. When so lder ro lls of f th e tip, it ne eds clean ing.

• Thin raisin-core solder. Do not use any flux or grease.

• A diagonal cutter to trim excess w ires. To avoid in jury wh en cutting ex cess leads, ho ld the lead so th ey

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 exc luded. Alwa ys look for poss ible last minu te manu al updates, indicated as ‘NOTE ’ on a separate leaf let.

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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 so ck et . W a tc h t he
position of the notch!

 R2 : 18K (1 - 8 - 0 - 2 - 1)
 R7 : 1K8 (1 - 8 - 0 - 1 - 1)

 Attention : becaus e one of the

connections of both R2 and R7
is a meas uring point , it is a dvis­able 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 degr ees.
Gain : Max imum temperature

calibration.

7. Multiturn trimmers

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 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 poi nts SENSOR of the pcb, us ing

a piece of screened wire (+/- 50cm). The polarity is of no importance.

Fig. 1.4

Preparing the sensor

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 IMPORTANT : Fi rst have the circuit "warmed up" for about 10 minutes before starting adjusting!

 Connec t the transmitter (type KTY11, KTY81-22 or equivalent) with the points SENS OR 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.
 P lunge the transmitter into the melting ice-water (0°C). Take care that the connection wires of the trans-

mitter do not touch the water.

 Adj ust the OFFSET trimming potentiometer RV1, so that the meter indicates 0V (possibl y select a more

sensitive measuring range) and wait until the indicat i on 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. :

 Connec t the output of t he sensor (OUT + and -) with the points IN (+ and -) of the controller (this c an be

sensor 1 to 4 in the case of K6000)

 Pl unge 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 stabl e.

When using the controller as a room thermostat, you better adjust the maximum indication against body tempera­ture, us ing the GAI N trimming pot entiom eter. It is advisabl e to verify t he temperat ure at th e place of th e sensor
with a clini cal t hermome ter .

REMARK : If the sensor is intended to be used for m easuring liquid temperatures, it has to be ins ulated by
enclosing it with silicone or glue.

In case yo u want high er accurac y above 40°C, then cali brate the sen sor in a kno wn source of h eat e.g. boi ling
water (100°C).

 REPEAT THE FULL ADJUSTMENT PROCEDURE AT LEAST ONE MORE TIME!

 With temperatures under 0°C a nd above 70°C it is advisable to not install the electroni c circuitry (pcb

with components) near the trans mitter.

 The specifications are indicative and can differ from o ne transmitter t o anothe r.

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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 feedi ng the sensor use an unstabilis ed 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

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9890 Gavere

Belgium Europe

www.velleman.be

www.velleman-kit.com

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