WIKA S-20 Data sheet

Electronic
Pressure Measurement

Model S-20

High Performance Pressure Transmitter
for General Industrial Applications

WIKA Datasheet S-20

Applications

■

General industrial applications

■

Demanding research and development applications

■

Harsh industrial environments

Special Features

■

Measuring ranges from 0…10 to 0…20,000 psi (0 ... 0.4
to 0 ... 1,600 bar)

■

Non-linearity of up to 0.125 % B.F.S.L.

■

Available output signals include 4 ... 20 mA, 0 ... 10 VDC,
1 ... 5 VDC and many others

■

Industry standard electrical connections including
DIN 175301-803A L- connector, cables, housings and
many others

■

Common USA and international process connections
available

Model S-20 Pressure Transmitter

Description

The model S-20 pressure transmitter is the ideal solution for
customers with demanding performance requirements in
many industrial applications.

It features high accuracy, a robust design and is available with
an exceptional number of options that make it suitable for an
extremely broad range of pressure measurement applications.
.

High versatility

The model S-20 oers continuous measuring ranges between

0…10 psi and 0…20,000 psi (0 ... 0.4 and 0 ... 1,600 bar) in
all common engineering units. Vacuum and compound ranges
are also available.

These measuring ranges can be combined with virtually any
standard industry output signal, common international process
connections and a wide variety of electrical connections.

A large number of options are available including dierent

accuracy classes, extended temperature ranges and

customer specic pin assignments to provide compatibility

with most industrial applications.

Data sheets showing similar products:
Pressure transmitter for general industrial applications; model A-10; see data sheet PE 81.60

High quality

The rugged design makes the model S-20 a highly reliable

transmitter that is not aected by most adverse environmental

conditions. This transmitter meets most application
performance requirements when exposed to very low outdoor
temperatures, extreme shock and vibration and aggressive
media.

Availability

Variations of the S-20 described in this data sheet are usually
available with short lead times. Inventory of popular designs
are usually available for particularly urgent requirements.

Page 1 of 15WIKA Datasheet S-20 · 4/2013

R

Measuring ranges

Relative pressure ranges

psi 0 … 10 0 … 15 0 … 25 0 … 30 0 … 50 0 … 60 0 … 100

0 … 150 0 … 160 0 … 200 0 … 250 0 … 300 0 … 400 0 … 500

0 … 600 0 … 750 0 … 1,000 0 … 1,500 0 … 2,000 0 … 3,000 0 … 4,000

0 … 5,000 0 … 6,000 0 … 7,500 0 … 10,000 0 … 15,000 0 … 20,000

bar 0 ... 0.4 0 ... 0.6 0 … 1 0 … 1.6 0 … 2.5 0 … 4 0 … 6

0 … 10 0 … 16 0 … 25 0 … 40 0 … 60 0 … 100 0 … 160

0 … 250 0 …. 400 0 … 600 0 … 1,000 0 … 1,600

Absolute pressure ranges

psi 0 … 10 0 … 15 0 … 25 0 … 30 0 … 50 0 … 60 0 … 100

0 … 150 0 … 160 0 … 200 0 … 250 0 … 300 0 … 400 0 … 500

bar 0 … 0.4 0 … 0.6 0 … 1 0 … 1.6 0 … 2.5 0 … 4 0 … 6

0 … 10 0 … 16 0 … 25 0 … 40

Vacuum and compound ranges

psi -30 inHg ... 0 -30 inHg ... +15 -30 inHg ... +30 -30 inHg ... +45 -30 inHg ... +60

-30 inHg ... +100 -30 inHg ... +160 -30 inHg ... +200 -30 inHg ... +300 -30 inHg ... +500

bar -0.4 … 0 -0.6 … 0 -1 … 0 -1 … +0.6 -1 … +1.5

-1 … +3 -1 … +5 -1 … +9 -1 … +15 -1 … +24

-1 … +39 -1 … +59

The listed pressure ranges are also available in kg/cm2, kPa and MPa.
Special measuring ranges between 0 ... 10 and 0 ... 20,000 psi ( 0.4…1600 bar) are available on request.
Special pressure ranges may have reduced long-term stability and increased temperature errors.

Overpressure limit

The overpressure limit depends on the specic sensor element used for the selected pressure range. A reduction in the
overpressure safety rating may occur depending on the specic process connection and seal selected. A higher overpressure

limit may provide a greater temperature error.

Measuring range < 150 psi/10 bar ≥ 150 psi/10 bar

3 times (standard) 2 times

5 times 3 times

1) Restriction: max. 60 bar/870 psi with absolute pressure

2) Only possible for relative pressure measuring ranges ≤ 400 bar or 5,800 psi

3) Only possible for absolute pressure measuring ranges < 16 bar or 220 psi

1)

(standard)

2) 3)

Vacuum resistance

Ye s
(No damage to sensor when vacuum is applied)

Page 2 of 15 WIKA Datasheet S-20 · 4/2013

Output signal

Signal type Signal

Current (2-wire) 4 ... 20 mA

20 ... 4 mA

Voltage (3-wire) DC 0 ... 10 V

DC 0 ... 5 V
DC 1 ... 5 V
DC 0.5 ... 4.5 V
DC 1 ... 6 V
DC 10 ... 0 V

Ratiometric (3-wire) DC 0.5 ... 4.5 V

Other output signals on request.

Permissible load in Ω

■

Current output (2-wire): ≤ (power supply - 7.5 V) / 0.023 A

≤ (power supply - 11.5 V) / 0.023 A (with optional settling time of 1 ms)

■

Voltage output (3-wire): > maximum output voltage / 1 mA

■

Ratiometric output (3-wire): > 4.5k

Optional output signal limits

■

4 ... 20 mA signal: Minimum zero point setting: 3.6 mA 1), 3.8 mA, 4.0 mA

Maximum full scale setting: 20 mA, 21.5 mA, 23 mA

■

DC 0 ... 10 V signal: Full scale: 10 VDC or 11.5 VDC

1) Not available with the zero point adjustment option

Voltage supply

Power supply

Maximum allowable power supply rating for cULus approval: 35 VDC (32 VDC with heavy-duty connector)

■

Current output (2-wire)

4 ... 20 mA: 8 ... 36 VDC (12 ... 36 VDC with optional 1 ms settling time)
20 ... 4 mA (reverse output): 8 ... 36 VDC

■

Voltage output (3-wire)

0 ... 10 VDC: 12 ... 36 VDC
0 ... 5 VDC: 8 ... 36 VDC
1 ... 5 VDC: 8 ... 36 VDC

0.5 ... 4.5 VDC: 8 ... 36 VDC
1 ... 6 VDC: 9 ... 36 VDC
10 ... 0 VDC: 12 ... 36 VDC

■

3-wire ratiometric output:

0.5 ... 4.5 VDC: 5 VDC ±10 %

Power dissipation (loss)

■

Current output (2-wire): 828 mW (22 mW/K derating of the power dissipation when ambient temperatures

are ≥ 212 ° F/100 °C)

■

Voltage output (3-wire): 432 mW

Maximum current consumption

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Current output (2-wire): Current signal, max. 25 mA

■

Voltage output (3-wire): max. 12 mA

Page 3 of 15WIKA Datasheet S-20 · 4/2013

Reference conditions (per IEC 61298-1)

Temperature

59…77ºF (15…25ºC)

Barometric pressure

860 ... 1,060 mbar

Humidity

45 ... 75 % relative

Power supply

■

24 VDC

■

5 VDC for ratiometric output

Mounting position

Calibrated in vertical position with pressure connection facing down

Response time

Signal type Settling time per IEC 62594 Signal damping

Standard

Current (2-wire) 3 ms 1 ms 10, 50, 100, 500, 1,000, 5,000 ms
Voltage (3-wire) 2 ms 1 ms 10, 50, 100, 500, 1,000, 5,000 ms
Ratiometric (3-wire) 2 ms 1 ms 10, 50, 100, 500, 1,000, 5,000 ms

1) 3 dB limit frequency: 500 Hz

2) 3 dB limit frequency: 1,000 Hz

3) Alternative specications for 4 ... 20 mA output signal:
Load: ≤ (power supply - 11.5 V) / 0.023 A
Power supply: DC 12 ... 36 V

1)

Option 1

2) 3)

Option 2

Switch-on time (from power up to output signal)

150 ms

Switch-on drift time

5 s to reach stated accuracy (60 s with optional 0.1 % zero point adjustment)

Page 4 of 15 WIKA Datasheet S-20 · 4/2013

Accuracy data

Non-linearity (per IEC 61298-2)

Accuracy at calibration temperature

BFSL Terminal method

≤ ±0.5 % of span (standard) ≤ ±1.0 % of span ≤ ±1.0 % of span

≤ ±0.25 % of span ≤ ±0.5 % of span ≤ ±0.5 % of span
≤ ±0.125 % of span

1) Restrictions for the non-linearity of 0.125 % BFSL or 0.25 % with terminal method:
Available output signals: 4 ...20 mA and DC 0 ... 10 V

Available measuring ranges: All measuring ranges specied in the data sheet

For further output signals or measuring ranges, please ask the manufacturer

1)

≤ ±0.25 % of span

1)

≤ ±0.25 % of span

Calibration temperature

15 ... 25 °C (standard)

4 °C ±5 °C
40 °C ±5 °C
60 °C ±5 °C
80 °C ±5 °C

Zero point adjustment

≤ ±0.2 % of span, factory setting (standard)

≤ ±0.1 % of span, factory setting

±10 % of span, in 0.05 % increments, customer setting

1) Restrictions for the optional factory set 0.1 % zero point adjustment:
Only available with 4 ...20 mA and 0 ... 10 VDC output signals

Available measurement ranges: All relative pressure ranges specied in the

data sheet. Not available in combination with the optional calibration temperature.

2) The “optional zero point adjustment access” is not available with every electrical
connection, see “Electrical connections” for details.

1)

2)

1)

Eect of mounting position on zero oset

For measuring ranges < 15 psi ( 1 bar), an additional zero oset of up to 0.15 % applies

Non-repeatability

≤ ±0.1 % of span

Temperature hysteresis

0.1 % of span at > 176 °F (80 °C)

Long-term drift (per IEC 61298-2)

■

≤ ±0.1 % of span

■

≤ ±0.2 % of span (with special measuring ranges)

Temperature error (for calibration temperature of 59…77 °F (15 ... 25 °C))

For measuring ranges < 15 psi (1 bar), special measuring ranges and instruments with an increased overpressure limit the
temperature error increases by 0.5 % of span

Temperature error [%]

Medium temperature [°C]

Page 5 of 15WIKA Datasheet S-20 · 4/2013