Hand-Grip Heart Rate Monitor (HGH-BTA)
Specifications and User Guide

TROUBLESHOOTING
-Primary Test: This sensor supports Bluetooth® low energy technology if it has a Polar Heart Rate Module. Using Bluetooth® for data collection is very stable and is done at lower sampling rates. This is the best method for collecting heart rate data. Use the receiver if your device does not support Bluetooth. If you are using the receiver, make sure that the hand grips and the receiver are in alignment. The arrow symbol on the left hand grip and the receiver should be held in parallel alignment. The hand grips and the receiver should be at the same level.

Secondary Test: Confirm that the following are OK:
1. the receiver is within 80 cm of the hand grips
2. there are no electrical devices within 25 centimeters of the receiver (interfaces, computers, cell phones, electrical lab equipment)
3. no other receivers or transmitters are near the sensor
4. the contacts are clean
5. readings are stabilized before starting an experiment 
6. if the reading for the Heart Beats Graph in Logger Pro (Graph 2 in LabQuest App and Graphical Analysis) is a flat line, the battery may be dead. As units approach their third and fourth year of service, the battery in the module will need to be changed. The battery is a CR 2025, available at most drug stores. Please be sure to dispose of the old battery properly. To find a battery disposal facility near you, visit http://www.rbrc.org/

RELATED TIL ENTRIES

Which Polar heart rate modules work with Vernier heart rate sensors?
Is it possible to order the receiver and transmitter portion of the Exercise or Hand-Grip Heart Rate Monitor separately?
How can I get better recordings using the Hand-Grip Heart Rate Monitor or Exercise Heart Rate Monitor
The Hand-Grip Heart Rate Monitor or Exercise Heart Rate Monitor does not work with my other sensors, such as a temperature probe. What is the problem?

SPECIFICATIONS
-order code: HGH-BTA

Battery type

CR 2025 (user-replaceable)

Battery lifetime

200 hours

Operating temperature

–10 to 50ºC

Radios

Bluetooth and 5 kHz RF transmission

RF transmission wireless range

0 to ~1 m

Bluetooth wireless range

10 m or more unobstructed

CALIBRATION
-Calibrate? No. The Hand-Grip Heart Rate Monitor does not need to be, nor can it be, calibrated.

RELATED VERNIER PRODUCTS
https://www.vernier.com/product/heart-rate-hand-grips/

https://www.vernier.com/product/polar-transmitter-module/

https://www.vernier.com/product/exercise-heart-rate-strap/

https://www.vernier.com/product/heart-rate-receiver/

Polar’s video on how to change the battery in the Polar H7:

Polar’s video on how to change the battery in the Polar H9: