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Solid State Pressure Sensors
D8M
Solid State Pressure Sensors with
Analog, Pulse or Frequency Outputs
• Compact housing measures 30L x 30W x 12.4H mm.
• Accept 4 mm OD tubing (D8M-A1, -R1); 3 mm OD tubing
for (D8M-D1, -D2), 6 mm OD tubing for D8M-D82.
• Chemical-resistant plastic (PBT) body.
• Metal shield mounted version (D8M-D82) available.
• IP40 enclosure rating for embedded applications.
• Pre-wired and PCB mounting models available.
Ordering Information
Operating pressure
range
0 to 4.9 kPa
(0 to 0.71 psi)
0 to 5.88 kPa
(0 to 0.85 psi)
0 to 5.88 kPa
(0 to 0.85 psi)
0 to 4.9 kPa
(0 to 0.71 psi)
0 to 196.13 Pa
(0 to 0.028 psi)
Output signal
Output frequency
Analog,
15 to 1247 mV
Pulse count,
1 pulse/9.81 Pa
(1/0.0014 psi)
Pulse count,
1 pulse/9.81 Pa
(1/0.0014 psi)
Pulse count,
1 pulse/9.81 Pa
(1/0.0014 psi)
Frequency,
1 kHz/9.81 Pa
(1 kHz/0.0014 psi)
--
--
--
--
80 to 300 kHz
Power supply
voltage
2.2 ±0.1 VDC
2.2 to 3.4 VDC with
regulator
2.2 to 3.4 VDC with
regulator
2.2 to 3.4 VDC with
regulator
4.2 to 5.5 VDC with
regulator
Withstand pressure
Model
58.8 kPa (8.53 psi) for 3 D8M-A1
minutes
58.8 kPa
D8M-D1
(8.53 psi) for 3 minutes
58.8 kPa
D8M-D2
(8.53 psi) for 3 minutes
19.6 kPa (2.84 psi) for 5 D8M-D82
minutes
3 kPa (0.435 psi) for 10 D8M-R1
seconds
Solid State Pressure Sensors D8M
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Specifications
Electrical Ratings
Item
D8M-A1
D8M-D1
Power supply voltage
2.2 ±0.1 VDC
2.2 to 3.4 VDC with
regulator
Current consumption
2.5 mA max.
25 mA max.
Load resistance
1 Mmin.
--
Output resistance
500 max.
--
Leakage current
1 mA or less
1 mA or less
Output voltage
15 to 1247 mV
--
Output pulses
--
--
Output resolution
(Note 1)
1 pulse/9.81 Pa
Output voltage rate of
change with resistance
load change
1 Mor more into 30 --
kis made within
2.5%
Output voltage by input 0.98 kPa = 261 mV --
pressure
1.96 kPa = 508 mV
3.73 kPa = 951 mV
4.9 kPa = 1247 mV
(Note 1)
Operating characteristics ±62 mV initial
--
±37 mV during test
and after
0 kPa = 30 pulses
0.59 kPa = 60 ±32
pulses
1.96 kPa = 200 ±24
pulses
3.73 kPa = 380 ±24
pulses
5.39 kPa = 530 ±82
pulses
(Note 2)
±62 mV temperature --
influence
D8M-D2
2.2 to 3.4 VDC with
regulator
25 µA
--
--
1 mA or less
--
--
1 pulse/9.81 Pa
--
--
--
0 kPa = 30 pulses
0.59 kPa = 60 ±32
pulses
1.96 kPa = 200 ±24
pulses
3.73 kPa = 380 ±24
pulses
5.39 kPa = 550 ±82
pulses
(Note 2)
--
D8M-D82
D8M-R1
2.2 to 3.4 VDC with 4.2 to 5.5 VDC with
regulator
regulator
100 mA ±5% at 3 VDC 10 mA max.
-- --
-- --
1 mA or less
1 mA or less
-- --
-- 80 to 300 kHz
1 pulse/9.81 Pa
1 kHz/9.81 Pa
-- --
-- --
--
0 kPa = 30 pulses
0.15 kPa = 45 ±30
pulses
2 kPa = 204 ±15
pulses
4 kPa = 438 ±46
pulses
--
--
0 Pa =
180 ±100 kHz;
Incremental change
from 0 value:
49.03 Pa =
5 ±0.9 kHz
73.55 Pa =
7.5 ±1.0 kHz
147.10 Pa =
15 ±0.8 kHz
196.13 Pa =
20 ±1.4 kHz
(Note 2)
--
Note: 1. Output voltage (mV) = Supply voltage V (2.2) x (2.464 x Pressure (kPa)/9.8 x 1000 + 15)
2. Values measured during and after testing.
Operating Characteristics
Item
Pressure type
Pressure range
Withstand pressure
Repeatability/hystersis
Non-linearity
characteristics
Response time
D8M-A1
Gauge
0 to 4.9 kPa
(0 to 0.71 psi)
5.88 kPa for 3
minutes
±0.5% FS
--
3.0 ms
Operating temperature
(Note)
Storage temperature
(Note)
Operating humidity
-30° to 70°C
-40° to 80°C
25 to 95%
D8M-D1
D8M-D2
D8M-D82
D8M-R1
0 to 5.88 kPa
(0 to 0.85 psi)
58.8 kPa for 3
minutes
±0.5% FS
--
0 to 5.88 kPa
(0 to 0.85 psi)
58.8 kPa for 3
minutes
NA
--
0 to 4.9 kPa
(0 to 0.71 psi)
19.6 kPa for 5
minutes
±0.5% FS
±2% FS max.
0 to 196.13 Pa
(0 to 0.028 psi)
3 kPa for 10
seconds
±0.5% FS
±2% FS max.
2.5 ms (pressure)
18 ms max. (switch)
100 ms (discharge)
-30° to 70°C
3 ms (pressure)
32 ms max. (switch)
250 ms (discharge)
-30° to 70°C
1.5 ms (pressure)
30 ms max. (switch)
45 ms (discharge)
-10° to 60°C
3 seconds max.
-20° to 70°C
-40° to 80°C
-40° to 80°C
-20° to 70°C
-30° to 80°C
25 to 95%
25 to 95%
25 to 95%
25 to 95%
Note: With no icing or condensation
2 Solid State Pressure Sensors D8M

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Environmental Characteristics
Item
Insulation resistance
Dielectric strength
Degree of protection
Pressure port
Connection method
Weight
Material
D8M-A1
D8M-D1
D8M-D2
100 mmin., 250 VDC between lead terminals and the base
250 VAC, 50/60 Hz for 1 minute between lead terminals and the base
D8M-D82
NA IP40
4 mm OD
3 mm OD
Solder on PC boards Wiring connector on
top
NA NA
PBT (polybutylene terephthalate)
IP40
3 mm OD
Wiring connector on
top
NA
IP40
6 mm OD
Three AWG26 wires,
115 mm long
NA
D8M-R1
500 VAC, 50/60 Hz for
1 minute between ter-
minals and the base
IP40
4 mm OD
Wiring connector on
bottom
NA
Operation
Response Timing Charts
D8M-D1, D2, D82
Interface Circuit Diagram
D8M-R1
Model
D8M-D1
D8M-D2
D8M-D82
T1
2.5 ms min.
3.0 ms min.
1.5 ms min.
T2
18 ms max.
32 ms max.
30 ms max.
T3
100 ms min.
250 ms min.
45 ms max.
Legend: T1, Pressure measurement time
T2, Response time
T3, Electrical discharge time
D8M-R1
Response time to 90% of 0.2kPa
Max. 3 seconds (excluding time for pressure change)
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.
Solid State Pressure Sensors D8M
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Dimensions
Unit: mm (inch)
D8M-A1
30 (1.18)
23 (0.92) ±0.2
30 (1.18)
23 (0.92) ±0.2
Two 3.2 (0.13) dia.
mounting holes
TYPE NAME
Two, 3 (0.12) dia.
10.7 (0.42)
17.7 (0.70)
10.1 (0.40)
2 (0.08)
4 (0.16) OD
18.8 (0.74)
5 (0.20)
1.6 (0.06)
11.6 (0.46)
18.6 (0.73)
2 (0.08)
LOT NUMBER
4 (0.16) OD
Two, 1.5 (0.06) dia.
standoff pins
4.4 (0.17)
7 (0.28)
Three, 0.635 (0.025)
square terminal leads
Mounting Holes
(Top View)
Terminal Arrangement
(Top View)
GND
VOUT
VCC
15.6 (0.61) ±0.01
5.08 (0.20)
23 (0.91) ±0.1
Two, M3 holes
D8M-D1
5.08 (0.20)
23 (0.91) ±0.1
4 Solid State Pressure Sensors D8M

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D8M-D2
D8M-D82
Solid State Pressure Sensors D8M
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