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CPT6180 -- Precision Pressure Sensor

Category: PRESSURE

Model: Pressure Sensor

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The models CPT6180 and CPT6100 precision pressure sensors are compact, robust sensors with a serial output and a measuring range which is freely selectable between -1 ... 400 bar (-15 ... 6,000 psi). The high accuracy of up to 0.01 % IS-50 for 365 days makes the sensor one of the most accurate transducers in precision measurement technology. The standard output mode provides the pressure values via a query-response process.

Application

These precision pressure sensors are built into OEM instru-ments, e.g. in pressure, flow or humidity calibrators, or in any instrument where high-accuracy measurement is needed.

They are used as reference pressure sensors within the automated manufacturing of pressure measuring instruments or calibration stands. Through a high accuracy, speed of reading and long-term stability, these are particularly suited for applications in wind tunnels or in pressure chambers. These characteristics make it a valuable tool in metrology, hydrology, oceanography, and in the aviation and space industries.

Functions

The models CPT6180 and CPT6100 have an RS-232 or RS-485 interface. The RS-485 interface offers the possibility of a genuine multidrop connection and simple cabling. There are four different baud rates to choose from.

The sensors can be configured for gauge and absolute pressure for any measuring range within the specified limits. They have a wide voltage supply range (DC 6 ... 20 V) and low power consumption (< 0>

Compact design

The pressure sensors are, due to their robust, compact design, easily integratable in a 19” rack without taking up much space. With the combination of male and female threads, a fast and secure fitting is always possible, negating the need for further sealing.

Precision pressure sensor technolog

Model

CPT 6100

CPT 6180

Accuracy 1)

0.03 % FS 2)

0.01 FS 2)

0.01 % IS-50 3)

Measuring Range

Gauge Pressure

0 ... 25 to 0 ... 70 mbar

(0 ... 0.36 to 0 ... 1 psi)

0 ... ? 70 mbar to 0 ... 400 bar

(0 ... ? 1 up to 0 ... 6,000 psi)

0 ... 1 to 0 ... 400 bar

(0 ... 15 to 0 ... 6,000 psi)

Bi-Directional

-25 ... 25 to -35 ... 35 mbar

(-0.36 ... 0.36 to -0.5 ... 0.5 psi)

-35 .... 35 mbar to -1 ... 400 bar

(-0.5 ... 0.5 to -14.5 ... 6,000 psi)

-1 ... 10 to 0 ... 400 bar

(-15 ... 145 psi to 0 ... 6,000 psi)

Absolute Pressure

-

0 ... 500 mbar abs. to 0 ... 401 bar abs.

(0 ... 7.5 psi abs. to 0 ... 6,015 psi abs.)

0 ... 1 to 0 ... 401 bar abs.

(0 ... 15 to 0 ... 6,015 psi abs.)

Calibration Interval

180 days

180 days

365 days

CPT6140 as barometric reference

Measuring Range

552 ... 1,172 mbar abs. (8 ... 17 psi abs.)

Accuracy 1)

0.01 % of reading

Calibration Interval

365 days

Preassure Units

psi, bar, mbar, Pa, kPa, hPa, MPa, tsi, atm, torr, Dynes/cm?2;, g/cm?2;, kg/cm?2;, mSW, oz/in?2;, psf, tsf, mmH2O (4°C), cmH2O (4°C), mH2O (4°C), inH2O (4°C), inH2O (20°C), inH2O (60°F), ftH2O (4°C), ftH2O (20°C), ftH2O (60°F), ?mHg (0°C), mmHg (0°C), cmHg (0°C), inHg (0°C), inHg (60°F), inSW (0°C), ftSW (0°C), mtorr (0°C)

  1. The accuracy is defined by the total measurement uncertainty, which is expressed with the coverage factor (k = 2) and includes the following factors: the intrinsic performance of the instrument, the measurement uncertainty of the reference instrument, long-term stability, influence of ambient conditions, drift and temperature effects over the compensated range during a periodic zero point adjustment.
  2. FS: Full Span
  3. 0.01 % IS-50 accuracy: Between 0 ... 50 % of the full scale, the accuracy is 0.01 % of half the full scale and between 50 ... 100 % of the full scale, the accuracy is 0.01 % of reading

Precision pressure sensor

Case

Mounting Position

< 1 bar negligible

Can be adjusted through zero point adjustment (linear shift of the characteristic curve)

Dimesions

see technical drawings

Weight

505 g (1.11 lbs.)

Display

Resolution

CPT6100: 6 significant figures

CPT6180: 7 significant figures

Filter

Adjustable exponential filter from 0 ... 99 %

The filter is only active within a defined range of 0.010 % FS

Warm up time

approx. 15 min up to the specified accuracy

Connection

Pressure Connection

Connection 7/16-20 SAE for pressure and reference port

The reference port is sealed for absolute pressure sensors

Over Pressure Safety

10 % above the nominal pressure of the sensor

Material, Watted Parts

Aluminium, brass, stainless steel 316, Buna-N, Viton®, silicone grease, silicone rubber, nylon, ceramic, glass, silicon

Voltage Supply

Power Supply

DC 6 ... 20 V; 45 mA for DC 12 V

Permissible ambient conditions

Storage Temperature

-20 ... +70 °C (-4 ... 158 °F)

Humidity

0 ... 95 % r. h. (non-condensing)

Compensated temperature range

15 ... 45 °C (59 ... 113 °F)

Precision pressure sensor

Communication

Interface

RS-232 or RS-485

Baud Rate

9,600, 19,200, 38,400 or 57,600 baud

Signal Output

Query and response

Measuring Rate

Standard: 10 values/s

Option: 50 values/s

Respons Time

Standard: 100 ms for a FS pressure pulse

Option: 20 ms for a FS pressure pulse

APPROVALS

CE

EU declaration of conformity

?EMC directive

?Pressure equipment Directive; PS > 200 bar; Modul A, pressure accessory

European Community

EAC

Electromagnetic compatibility

Eurasian Economic Community

MTSCHS

Commissioning approval

Kazakhstan

CERTIFICATES

Calibration 4)

Standard: A2LA calibration certificate

Option: DKD/DAkkS calibration certificate

Recommended recalibration interval

1 year (dependent on conditions of use)

Calibrated in a horizontal position

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