Part number variations are described in the datasheet.
Thermometrics Sensor Assemblies
Type ma - Biomedical Chip Thermistors
Thermometrics Type MA Biomedical Chip Thermistor Assemblies are designed for use in applications involving both intermittent and continuous patient temperature monitoring. Repeatability and fast response are essential, not only for the intermittent temperature requirements associated with oral and rectal fever measurements, but also for the continuous monitoring often necessary during induced-hypothermia and general anesthesia, or when employed in the care of infants and premature babies. Intensive care units, along with recovery rooms, have also adopted patient temperature as part of their vital sign monitoring procedures. Temperature monitoring for skin surface, tympanic, esophageal, foley catheters, and biofeedback applications has also improved due to the high stability and tight interchangeable tolerances designed into each Thermometrics’ Biomedical Sensor Assembly.
Within our Type MA line of NTC Thermistors, we offer a complete line of standard sub-assemblies. Continuous research and development efforts within Thermometrics have resulted not only in these field-proven designs, but in the development of our Unitherm Thermochip Thermistor, designed exclusively for biomedical applications in the range of 32°F to 122°F (0°C to 50°C).
Although low in cost, these highly stable, precision thermochips provide the reliability, tight interchangeable tolerances, geometries, and fast response times that are often required in medical applications.
Thermometrics employs experienced applications engineers who welcome inquiries, whether for assistance, or to help with your design requirements concerning new and existing applications.
- Intermittent Patient Temperature Monitoring - For oral and rectal fever measurements
- Continuous Patient Temperature Monitoring - During general anesthesia, induced hypothermia, and premature infant care
- Vital Sign Monitoring - For Intensive Care Units (ICU) and recovery rooms
- Temperature Monitoring - For skin surface, tympanic, esophageal, foley catheters, and biofeedback
- Field-proven designs
- Highly stable and reliable
- Interchangeable tolerances in the range of 32°F to 122°F (0°C to 50°C)
- Tight geometries
- Fast response times
|Standard Diameters||0.030 in (0.762 mm)
0.050 in (1.27 mm)
0.070 in (1.78 mm)
0.080 in (2.03 mm)
|0.156 in (3.96 mm)||0.375 in (9.52 mm)|
|Body Length||0.375 in (9.52 mm)||3.75 in (95.25 mm)||N/A|
|Standard Lead Length||24 in (610 mm)
GG: 36 in (914 mm)
|2 in (51 mm)||24 in (610 mm)|
|Wire Gauge||28, 30, 32, 38, AWG||30 AWG||30 AWG|
|Standard Wire Insulation||*Heavy Isomid
*Medical Grade PVC
*Polyurethane with Nylon Overcoat
|PTFE||Medical Grade PVC PTFE|
|Body Material||Molded Plastic or Kapton Sleeve||Lexan Shaft Aluminum Tip||Stainless Steel|
|Nominal R Values @ 77°F (25°C)||2252 Ω, 3000 Ω, 5000 Ω, 10,000 Ω|
|Thermal Response Time
Skin Surface Assembly
|Still Air||15 seconds||35 seconds||45 seconds|
|Still Water*||2.0 seconds||0.6 seconds||2.0 seconds|
|*Response time provided is for assembly plunged from 77°F (25°C) air to 41°F (5°C) water.|