TC_LAB datasheet(10/29 Pages) WAVELENGTH

10 / 29 page

CONNECT THE POWER

On the back panel, insert the female end of the IEC AC power

cable into the Power receptacle and then plug the male end

into the AC power source.

NOTE: Place the TC LAB instrument at least 6” away from any

wall to provide adequate ventilation and prevent overheating.

WIRE A SENSOR AND TEST LOAD

We recommend using a test load and simulated thermistor

when configuring the TC LAB instrument. The thermistor test

load simulates a 10 kΩ thermistor operating at 25ºC.

Wire a 15 + 2 D-SUB plug to a test load and insert it into the

TE Out and Sensor D-SUB port located on the back panel.

10 kΩ

SENSOR- (1)

SENSOR+ (2)

LOAD Recommendation

0 to 10 A: 0.5 Ω, > 50 W

0 to 15 A: 0.1 Ω, > 50 W

Resistors may require

heatsinking.

LOAD

TEC+ (A1)

TEC- (A2)

Test Load

Thermistor Test Load

Figure 6. Test Load Wiring Schematic

Setting up this test load allows current to be driven to either

the positive or negative limit. Choose units of resistance and

change the setpoint above or below the 10 kΩ value. This

confirms proper operation and direction of the current flow.

After practicing with a test load to gain comfort and proficiency

with the operation of the instrument, wire the sensor and

thermoelectric or resistive heater.

WIRE A SENSOR

Be sure to wire the sensor to the correct pins on the TE/Sensor

D-SUB. Wiring depends on which type of sensor is used.

Figure 7. Thermistor Wiring Schematic

2-Wire

RTD

Sense+

Sense-

3-Wire

RTD

Sense+

Sense-

Force+

4-Wire

RTD

Sense+

Sense-

Force+

Force-

Figure 8. RTD Wiring Schematics

AD590

Figure 9. AD590 Wiring Schematic

LM335

Figure 10. LM335 Wiring Schematic

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