Pressure Measurement and Control Equipment

Pressure Transmitters

Pressure transmitters are electronic sensors that measure the pressure in a line or tank, convert it into a standard electrical signal such as 4–20 mA or 0–10 V and pass this signal to a PLC, frequency converter or controller. The category covers compact transmitters with connector or cable, measuring gauge, absolute and vacuum pressure.

The measuring cell with 316L stainless wetted parts is made in ranges from 0…0.05 bar up to 0…1000 bar; standard accuracy is ±1% of span, optional accuracy ±0.5%. Two-wire current output types are supplied with 8–30 V DC and work at medium temperatures of −30…+100 °C.

0…1000 bargauge pressure range

4–20 mA2-wire output

±0.5%optional accuracy

IP67M12 / cable connection

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Main Applications

Constant pressure control with frequency converters on booster sets
Pressure signal on compressors and compressed air lines
Monitoring 250–600 bar in hydraulic systems
Heating and cooling circuit pressure in building automation
Absolute or vacuum pressure measurement on process tanks
Analogue signal transfer to PLC and SCADA systems

Technical Data

Measurement type	Gauge, absolute, vacuum and ± ranges
Gauge pressure range	From 0…0.05 bar to 0…1000 bar
Absolute pressure range	From 0…0.1 bar to 0…25 bar
Overload limit	Depending on range; e.g. 3 bar for 0…1 bar, 1500 bar for 0…1000 bar
Output signals	4–20 mA (2-wire); 0–10, 0–5, 1–5, 0.5–4.5 V DC (3-wire); 0.5–4.5 V ratiometric
Accuracy	≤ ±1% of span (≥0.6 bar); option ±0.5%
Non-linearity	≤ 0.25% or 0.5% BFSL
Long-term drift	±0.1% of span (>0.4 bar)
Response	Settling time <4 ms (≥0.4 bar)
Process connection	G1/4 B, G1/2 B, 1/4 NPT, 1/2 NPT, R1/4 and others
Vibration / shock	10 g (IEC 60068-2-6) · 500 g (IEC 60068-2-27)
Service life	100 million load cycles (>0.1 bar)

Material Options

Part	4–20 mA (2-wire)	0–10 V (3-wire)	Ratiometric 0.5–4.5 V
Supply	8–30 V DC	14–30 V DC	5 V DC ±10%
Current consumption	Max. 25 mA	Max. 8 mA	Max. 8 mA
Medium / ambient temperature	−30…+100 °C	0…+80 °C	0…+80 °C
Wetted parts	316L; PH steel from 10 bar	316L; PH steel from 10 bar	316L; PH steel from 10 bar
Electrical connection	DIN 175301-803 A (IP65), M12×1 or cable (IP67)	DIN 175301-803 A (IP65), M12×1 or cable (IP67)	DIN 175301-803 A (IP65), M12×1 or cable (IP67)

Note: Values are from the manufacturer data sheet of the general industrial transmitter; range, accuracy and connection options of other models vary by model. In pump control the transmitter signal is usually wired to the booster set control panel.

Advantages

Standard signal

4–20 mA and 0–10 V outputs suit common control systems.
The 2-wire current output suits long cable runs.

Fast response

Settling time is below 4 ms.
Pressure changes reach the control system without delay.

Rugged design

10 g vibration and 500 g shock resistance.
Service life of 100 million load cycles.

Connection variety

G, NPT, R and M threaded process connections.
DIN connector, M12 or cable outlet options.

Construction and Design Features

316L measuring cell; oil-filled at low ranges, dry cell from 10 bar
316L stainless body parts
Electronic signal converter
DIN 175301-803 A connector, M12×1 or cable outlet
Threaded process connection

Send us the pressure type, measuring range, output signal and connection types via the Request a Quote form and we will select the right transmitter.

How to Choose?

Define the pressure typeChoose gauge for measurement against atmosphere, absolute for closed tanks and vacuum ranges for suction lines.
Choose the rangeWorking pressure must stay below full scale and pressure peaks must not exceed the overload limit.
Match the output signalChoose 4–20 mA or 0–10 V according to the analogue input of the PLC or drive.
Check the temperatureIf the medium exceeds 80 °C prefer the current output type; use a siphon on steam.
Define the connectionsChoose the process thread and electrical connection type (connector, M12, cable) to suit the installation.