Instruction manual

6 World Precision Instruments

Setting up TH Thermometer Ampliﬁer and Sensor

The TH ampliﬁer and its sensor are designed to measure the temperature of the ﬂuid

perfusing a heart or an organ (liver, kidney, mesentery) in order to determine the

temperature of the organ.

Fig. 6—The TH Temperature Ampliﬁer, front and back.

If the temperature sensor is going to be used:

1. Plug the microphone jack on the end of the temperature sensor to the TH IN

socket on the back panel of the ampliﬁer. The sensor is now connected to the

TH ampliﬁer module.

2. Plug the microphone jack of one of the output cables into the TH OUT socket of

the TH pressure ampliﬁer. Connect the other end of the output cable to one of

the analog inputs of the data acquisition unit.

3. Turn the 3-way program switch to GND. Place the temperature probe on or into

the area where the temperature needs to be measured. Turn on the ampliﬁer

unit. The actual temperature of the area being monitored appears on the 3-digit

display on the front panel of the TH module.

4. Check the baseline level of the temperature recording channel. A signal of

zero (0) volts is sent by the ampliﬁer to the data recorder. If necessary, set the

baseline of the recording channel to zero (0) using the controls of the data

recording system.

5. Turn the 3-way program switch to the 45ºC position. The voltage level on the

recording channel should change from 0 to 450mVDC corresponding to the

programmed 0-45ºC temperature range.

6. Turn the program switch to MEAS. The voltage level on the recording channel

should now correspond to the actual temperature at the location of the sensor.