Solid State Pressure Sensors

D8M

3

■ Environmental Characteristics

Operation

■ Response Timing Charts

D8M-D1, D2, D82

Legend: T1, Pressure measurement time

T2, Response time

T3, Electrical discharge time

D8M-R1

■ Interface Circuit Diagram

D8M-R1

Application Examples

Compact D8M solid state pressure sensors provide reliable detection

for gas and air inflow for burner controls in water heaters, furnaces

and other gas-fired devices. They can also be used in

gas usage meters.

Item

D8M-A1

D8M-D1

D8M-D2

D8M-D82

D8M-R1

Insulation resistance

100 m

Ω min., 250 VDC between lead terminals and the base

Dielectric strength

250 VAC, 50/60 Hz for 1 minute between lead terminals and the base

500 VAC, 50/60 Hz for

1 minute between ter-

minals and the base

Degree of protection

NA

IP40

IP40

IP40

IP40

Pressure port

4 mm OD

3 mm OD

3 mm OD

6 mm OD

4 mm OD

Connection method

Solder on PC boards

Wiring connector on

top

Wiring connector on

top

Three AWG26 wires,

115 mm long

Wiring connector on

bottom

Weight

NA

NA

NA

NA

NA

Material

PBT (polybutylene terephthalate)

Model

T1T2T3

D8M-D1

2.5 ms min.

18 ms max.

100 ms min.

D8M-D2

3.0 ms min.

32 ms max.

250 ms min.

D8M-D82

1.5 ms min.

30 ms max.

45 ms max.

Response time to 90% of 0.2kPa

Max. 3 seconds (excluding time for pressure change)