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參數(shù)資料
| 型號(hào)： | SCX15DN |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Precision Compensated Pressure Sensors |
| 中文描述： | 精密補(bǔ)償壓力傳感器 |
| 文件頁(yè)數(shù)： | 8/10頁(yè) |
| 文件大小： | 219K |
| 代理商： | SCX15DN |
March 1998/053
SCX - Series
Precision Compensated Pressure Sensors
Aubinger Weg 27, 82178 Puchheim, Germany
Phone 0049 - (0) 89 80 08 30, Fax 0049 - (0) 89 8 00 83 33
http://www.sensortechnics.com
PRESSURE SWITCH
The circuit shown in Figure F is an example of using the SCX01D
to make an accurate 0.5 psi switch. This design can be easily
adapted to other pressure ranges by using higher pressure range
SCX sensors.
Circuit Description
Operating the SCX01D from 5V the sensor will have
5
/
the
sensitivity given on the SCX data sheet. The output at 0.5 psi will
be 3.75 mV. Resistor R
sets the amplifier gain to 269 V/V. Zener D
1
biases the amplifier output voltage to 1.2 V with zero input pressure
and amplifier A
swings from 1.2 V to 3.2 V for an input pressure
from 0 to 1 psi. Resistors R
and R
provide 5 mV of hysteresis to
comparator A
to ensure clean transitions for slow movins input
signals. R
sets the switch point for the comparator. Care must be
taken when laying out the comparator circuit; lead lengths should
be as short as possible.
Adjustment Procedure
Apply 0.5 psi and adjust R
until the output just switches from a
high state (4.3 V) to a low state (0.0 V).
PORTABLE PRESSURE METER
The circuit shown in Figure G is a 0 to 200 millibar portable pressure
meter. The 3
1
/
digit display will read 199.9 millibar full-scale. This
circuit operates from a single 9 V battery and draws approximately
4.5 mA supply current. This will provide a typical battery life in
excess of 100 hours. The minimum battery voltage is approximately
6.5 V.
This meter provides resolution to 0.1 millibars. The same circuit
can also be used for other pressure ranges simply by changing
the sensor and gain.
Circuit Description
The LM10CN (A
) is used to generate a regulated 5 V supply to
power the SCX05DN, amplifier A
2
, and the ICL7106 Amplifier A
2
is
a high input impedance diff-in,
diff-out amplifier. The sensor output is amplified to 200 mV full-
scale for the A/D input. R
sets the gain to 14V/V for the values
shown. The gain equation is:
A
V
= 2 (1 +
R1
/
R5
)
R
is the zero adjust pot and R
provides the full-scale span
adjustment. The voltage from pin 35 to pin 36 is approximately 100
mV when the display reads 199.9 millibar.
Component Selection
The value of the components R
-R
and C
-C
have been optimized
for 200 mV full-scale. (See the Intersil ICL7106 Datasheet). R
and
R
8
should be 15 turn cermet pots, R
-R
are metal film 1% resistors.
C
the integrating capacitor should be polypropylene, the reference
and auto zero capacitors can be polystrene or mylar, the clock
capacitor, C
4
, is mica.
Adjustment procedure
Apply 195 millibar to the meter and adjust R
until the display reads
195.0. Apply 0 psig and adjust R
4
until the display reads 000.0.
Repeat if required.
Figure F. 0.5 psi Switch
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| SCX30AN | Precision Compensated Pressure Sensors |
| SCX30DN | Precision Compensated Pressure Sensors |
| SD-A292B | CRYSTAL CLOCK OSCILLATORS |
| SD-A2920 | CRYSTAL CLOCK OSCILLATORS |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SCX15DN-90 | 制造商:Honeywell Sensing and Control 功能描述:Pressure Sensor 0psi to 15psi Differential/Gage 6-Pin |
| SCX15DNC | 功能描述:板上安裝壓力/力傳感器 0 to15psid 6PIN SIP UNAMP DIFF GAGE 20V RoHS:否 制造商:Honeywell 工作壓力:0 bar to 4 bar 壓力類型:Gage 準(zhǔn)確性:+ / - 0.25 % 輸出類型:Digital 安裝風(fēng)格:Through Hole 工作電源電壓:5 V 封裝 / 箱體:SIP 端口類型:Dual Radial Barbed, Same sides |
| SCX15DNC-90 | 制造商:Honeywell Sensing and Control 功能描述:SENSYM |
| SCX2.4 | 制造商:Distributed By MCM 功能描述:Replacement Belt |
| SCX2.9 | 制造商:Distributed By MCM 功能描述:Replacement Belt |
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