PRESSURE TRANSDUCERS

876 Series – BarometricPressure Transducers

New!

 Instant Warm-Up
 Barometric Pressure: 600 to 1100 or 800 to 1100 hPa/mb
 Low Power Consumption (for Battery or Solar Power)
The 876 Series features an extremely accurate and stable ceramic sensor to delivera great value in environmental pressure measurement. Gems’ glass-fused ceramic
capacitive sensing capsule offers inherent thermal stability and low hysteresis in aproven, simple design. A custom ASIC used in the 876 Series achieves long-term
stability and high accuracy, and its low power requirements (as low as 5 VDC) allow
the sensor to operate in remote battery or solar powered applications. An integrated
mounting bracket and 1/8˝ tube pressure connection ease installation.

Common Specifications
Input
Pressure Range
See ordering chart
Proof Pressure
20 psia (30 psia for 20 psia range)
Fatigue Life
>1 million cycles
PerformanceLong Term Drift
0.25% FS/6 months
Accuracy±0.25% FS
Thermal Error Zero
1% FS
Thermal Error Span
1% FS
Compensated Temperatures 30°F to +130°F (0°C to +55°C)
Operating Temperatures
0°F to +175°F (-18°C to +79°C)
Storage Temperatures-65°F to +250°F (-55°C to +121°C)
Zero Tolerance±25 mV
Span Tolerance±50 mV
Mechanical Configuration
Pressure Port
1/8˝ Tube Fitting
Wetted Parts
Stainless Steel, Alumina Ceramics, Gold, Elastomer
Electrical Connection
2 ft. Multiconductor Cable
Enclosure
Stainless Steel with Mounting Bracket
Vibration
2g from 5 Hz to 400 Hz
Acceleration
10g
Shock
50g (operating, 1/2 sine 10mg)
Approvals
CEWeight
3.5 oz.

Individual Specifications
Supply Voltage (Vs)
9.0-14.5 VDC
21.6-26.0 VDC
4.9-7.1 VDC

G-34

www.gemssensors.comExcitation
12 VDC
24 VDC
5 VDC

Output (3-wire)
0.1-5.1 VDC
0.1-5.1 VDC
0.5-4.5 VDCApplications• Environmental Monitoring Systems• Weather Measurement Systems• Weather and Environmental Data Logging• Barometric Pressure Compensation for Internal
Combustion Engine Performance• Cleanroom Barometric Pressure Compensation• Automotive Emissions Test Equipment

How They Operate
A glass-fused ceramic sensing capsule detects changes
in barometric pressure. As pressure increases ordecreases, the capacitance changes. This change incapacitance is detected and converted to a linear analog
signal by Gems’ custom ASIC-based circuit, producing
an output signal proportional to applied pressure.

CAPACITANCE TYPEDimensions
1.07
27.2
0.25
6.4

1.13
28.6

2.25
57.1

PRESSURE TRANSDUCERS

1.17
29.7

1.75
44.4
0.50
12.7

0.19 ±0.10
4.9 ±0.25 DIA.

1/8˝ O.D. PLASTIC PUSH-ONTUBE FITTING

2.08
DIA.
52.9

0.67
17.1

0.87
22.0
1.65
41.9

0.65
16.5
2 ft.
CABLE
0.6 m

How to Order
Use the bold characters from the chart below to construct a product code.
SELECT876 - 6-11mb - 12 V -* - * - * - *1. Series
876 - 876 Series
2. Pressure Range CodeBarometric:
6-11mb - 600 to 1100 mb
8-11mb - 800 to 1100 mb
0-20P - 0 to 20 psia
3. Excitation/Output
Code
12 V
24 V
5VExcitation
12 VDC
24 VDC
5 VDC

Output0.1-5.1 VDC
0.1-5.1 VDC
0.5-4.5 VDC

4. Options (*Add as suffix to base part code as needed)
715 - 0.1% FS accuracy.
839 - 1/8˝ NPT pressure port.
Cable Length:803-810 - For cable length of 3 to 10 feet (2 ft. is standard).
Please specify cable length by code (e.g., 810 for 10 ft. cable).
Consult factory for cable longer than 10 ft.
Calibration Certification:
901 - 11-point calibration certificate.

www.gemssensors.com

G-35