Sensors for National Instruments DAQ

Pulse Plethysmograph

The PTN-104 Plethysmograph, with MINI DIN 7 connector, is a sensitive, rugged, non-magnetic accelerometer, ideal for classroom use. It is small in size, requires no auxiliary power and connects to the MINI DIN 7 inputs on either the IX-MYDAQ or IX-ELVIS inputs. When used as a finger pulse sensor, the PTN-104 produces a signal from which rates and relative pressure information can be computed. The real-time integral of this signal is identical to volume pulse signals recorded with more expensive infrared pulse plethysmographs.

Applications include measurement of peripheral pressure pulses and Korotkoff sounds and small animal respiratory activity. Because the PTN-104 is self-powered, it does not require a conditioning amplifier.

Typical Pulse Output 200 mV
Connector Mini DIN7

Measurement Instructions
1. Install the IX-ELVIS board into the National Instrument ELVIS platform or the IX-myDAQ board onto the NI myDAQ. If using ELVIS, connect the ELVIS power supply to the ELVIS unit and connect it to the computer via a USB cable. Ensure both of the power switches are in the “on” position. For the myDAQ, connect it to the computer using the USB cable.

2. Connect the MINI DIN7 connector of the PTN-204 to either CH1 or CH2 of either the IX-ELVIS or IX-myDAQ board.

3. Open the recording software, select the channel that the PTN-204 is connected to and ensure the range is set to +/-5V.

4. To record a pulse, place the white surface of the PTN-100 on the soft volar surface of one of your middle fingers, wrap the velcro around the the finger snugly.

5. Start recording, relax the hand and observe the pulse.

*Note: The signal may be inverted while using the IX-MYDAQ.

Intended Use
iWorx Systems Inc. instruments, components, and accessories are designed for educational and research oriented life science applications and investigations. iWorx Systems Inc. does not condone the use of its instruments for clinical medical applications. Instruments, components, and accessories provided by iWorx are not intended for the diagnosis, cure, mitigation, treatment, or prevention of disease.
  • Model: PTN-104

Be the first to write a review.  Write a Review.

Customers who bought this product also purchased...

Who's Online

There currently are 3 guests online.