PVC4100 Series
MEMS PIRANI VACUUM TRANSDUCER
Venture Plaza Funabashi 222, 1-17-25 Kitahoncho, Funabashi-shi, Chiba 273-0864 Japan

Tel:81-47-489-5939 Email:info@all-device.com

DESCRIPTION
The PVC4100 is a fully calibrated, temperaturecompensated vacuum transducer designed forcost-effective OEM integration. It consists of aMEMS thermal conduction sensor (Pirani sensor),measuring electronics, and a microprocessor,
packaged in an ultra-compact PCB assembly.
The sensor element is based on Posifa's proven,second-generation MEMS thermal conduction
chip that operates under the principle that thethermal conductivity of gases is proportional totheir vacuum pressure.
The electronics and microprocessor amplify
and digitize the sensor signal, and provide theoutput via an I2C interface. Because the thermal
conductivity of a vacuum varies with the ambient
temperature, a temperature compensation
algorithm is implemented in the microprocessor,
taking input from a built-in temperature sensor.
To facilitate integration, the PVC4100 includes
a connector-terminated wire harness that issoldered onto the PCB assembly.

FEATURES• Range: 0.1 mTorr to 760,000 mTorr (0.013 Pato 101k Pa)• Accuracy: 15% reading from 1 mTorr to200,000 mTorr• Fast response time: 250 ms• Low power consumption for battery-powered
instruments• Temperature compensation• Resistant to contamination

APPLICATIONS• Leak detection in any closed system maintained under primary vacuum pumps, such as
in vacuum-insulated panels• Digital vacuum gauges

ABSOLUTE MAXIMUM RATINGS••••

Operating temperature: -25 °C to 85 °C
Storage temperature: -40 °C to 90 °CShock: 100 g peak (5 drops, 3 axis)
Overpressure: 27.5 bar

Datasheet_PVC4100_Vacuum_RevA_C0.3 | May 2022 | PAGE 1 OF 5

PVC4100 Series
MEMS PIRANI VACUUM TRANSDUCER
Venture Plaza Funabashi 222, 1-17-25 Kitahoncho, Funabashi-shi, Chiba 273-0864 Japan

Tel:81-47-489-5939 Email:info@all-device.com

ELECTRICAL CHARACTERISTICS
Test Conditions: Vdd = 3.3 Vdc, Ta=21°C
SPECIFICATIONS

MIN

TYP

MAX

Measurement Principle

Thermal conductance according to Pirani

Range11 x 10-1

760,000mTorr

0.013

101,000Pa1.3 x 10-4

1,013mbar

165535Count

Output Count
Accuracy1

CONDITIONS

UNIT
Air, O2, CO, N2

15 %Reading

1 mTorr to 200,000 mTorr (10-3 mbar to 266mbar)

50 %Reading

10-1 micron to 1 micron (10-4 mbar to 10-3 mbar)

50 %Reading

200,000 mTorr to 760,000 mTorr (266 mbar to1013 mbar)

Resolution

1%

Reading

Repeatability

2%

Reading

Response Time

250

ms

Supply Voltage

3.3

Vdc

Operating Current

22mA

Operating Temperature-2065°C

Temperature Compensation

560°C

Storage Temperature-2065°C

Wetted MaterialsEpoxy, FR4, glass, Ni, Si, Au

Note:
1. To achieve the range and accuracy below 1 mTorr and above 10 Torr as specified herein, the master MCU must implement
the extended calibration table as defined in the Posifa application notes.

Datasheet_PVC4100_Vacuum_RevA_C0.3 | May 2022 | PAGE 2 OF 5

PVC4100 Series
MEMS PIRANI VACUUM TRANSDUCER
Venture Plaza Funabashi 222, 1-17-25 Kitahoncho, Funabashi-shi, Chiba 273-0864 Japan

Tel:81-47-489-5939 Email:info@all-device.com

OUTPUT DESCRIPTION
IF count ≤ 10,000Micron/mTorr reading = countIF count > 10,000
Micron/mTorr reading = 13.5 * (count - 10,000) + 10,000
To achieve the range and accuracy as defined in specifications (i.e. below 1 mTorr and above
10,000 mTorr), the master MCU must implement the extended calibration table as defined in thePosifa application notes.

LOW-POWER OPERATION
For battery-powered instruments that require a further reduction in power consumption, we
recommend powering the PVC4100 in an intermittent mode:
1. Turn on the PVC4100
2. Wait for 300 milliseconds
3. Read from the I2C interface
4. Turn off the PVC4100
5. Wait for 1 second and repeat from Step 1
Datasheet_PVC4100_Vacuum_RevA_C0.3 | May 2022 | PAGE 3 OF 5

PVC4100 Series
MEMS PIRANI VACUUM TRANSDUCER
Venture Plaza Funabashi 222, 1-17-25 Kitahoncho, Funabashi-shi, Chiba 273-0864 Japan

Tel:81-47-489-5939 Email:info@all-device.com

PACKAGE DIMENSIONSPVC4100

654321

TopBottom

6

Side
Pad/Wire#Description (Wire Color)1

Vdd (Red)

2

GND (Black)

3

SDA (Yellow)

4

SCL (Green)

5

ICPCK (for firmware update) (Blue)

6

ICPDA (for firmware update) (White)

Note: The PVC4000 comes with a wire
harness that is soldered onto the PCB. The
length is 56 mm (2.2 inch). The wire harness
is terminated with a Molex connector P/N
51021-0600.

Datasheet_PVC4100_Vacuum_RevA_C0.3 | May 2022 | PAGE 4 OF 5

PVC4100 Series
MEMS PIRANI VACUUM TRANSDUCER
Venture Plaza Funabashi 222, 1-17-25 Kitahoncho, Funabashi-shi, Chiba 273-0864 Japan

Tel:81-47-489-5939 Email:info@all-device.com

ORDERING INFORMATIONPART NUMBER
PVC4101

SPECIFICATIONS
10-3 Torr to 760 Torr, SMD sensor, calibrated and temperature-compensatedPlease contact Posifa or your local distributor to place an order.

Datasheet_PVC4100_Vacuum_RevA_C0.3 | May 2022 | PAGE 5 OF 5