Type MA Specifications

MA100

Designed for use in catheter assemblies, these sen-

sors are available with nominal resistance values of

2252, 3000, 5000, and 10,000

Ω at 77°F (25°C).

Close monitoring of manufacturing processes allow

Thermometrics to maintain tight interchangeability

tolerances with volume production.

Typical design parameters are represented in

Assembly Type table.

• 0.030 in (0.76 mm) (10 K

Ω only) and 0.050 in

(1.27mm) diameters available with kapton sleeve

only.

• 0.070 in (1.78 mm) diameter normally supplied

with molded plastic tip.

MA200

Intermittent body temperature measurements are

common practice in all phases of patient care. This

assembly is ideally suited for the disposable cover

oral and rectal fever thermometers in use today. It

features rugged construction with tip sensitive shaft

assemblies exhibiting resistance values of 2252,

3000, 5000, and 10,000

Ω at 77°F (25°C). Refer to

Assembly Type table for typical design parameters.

MA300

Routine continuous patient temperature monitoring

is now feasible by using the convenience of

the patient’s skin site as an indicator of body

temperature. The stainless steel housing used

is suitable for both reusable and disposable

applications, while maintaining maximum patient

comfort. Nominal resistance values of 2252, 3000,

5000, and 10,000

Ω at 77°F (25°C) are available.

Refer to Assembly Type table for typical design

parameters.

Assembly Type

Assem-

bly Type

MA100

MA200

MA300

Standard

Diameters

(D)

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 (L)

3/8 in (9.52 mm)

3.75 in (95.25 mm) N/A

Standard

Lead

Length (A)

24 in (610mm)

GG: 36 in (914mm)

2 in (51 mm)

24 in (610mm)

Tolerance

See Tolerance

Code and Tem-

perature Table

See Tolerance

Code and Tem-

perature Table

See Tolerance

Code and Tem-

perature Table

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

(for all three types)

Thermal Response Time (63% Response)

Series

Still Air

Still Water*

MA100

Catherter Assembly

15 seconds

2.0 seconds

MA200

Oral-Rectal Assembly

35 seconds

0.6 seconds

MA300

Skin Surface Assembly

45 seconds

2.0 seconds

*Response time provided is for assembly plunged from 77°F (25°C) air to 41°F (5°C) water.