Protran PR3850®

Flush DiaphragmPressure Transmitter• Easy clean ﬂush membrane
membra toprevent clogging• Thick ﬁlm sensor
senso technology fors
long servicelife• Pressure ranges to 400 bar• Integral O-ring seal to ensure ﬂush
pressure seal
• ATEX/IECEx option available(includes M1 for mining applications)Vers. 20/1/Eng

Protran ® PR3850 Flush DiaphragmPressure Transmitter
Technical Data
Description
The PR3850 pressure transmitter has been
designed to meet the requirements of the majorityof industrial pressure measurement applications
where a hygienic ﬂush diaphragm connection isrequired.
Robustly constructed from stainless steel this range of pressuretransmitters incorporates the latest strain gauge technology
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stability and accuracy over a long service life. This transmitteris particularly suitable for use with high viscosity materials.
Typical applications include food processing, pharmaceutical,
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membrane can be easily cleaned for long term reliability andoutstanding performance.

The PR3850 offers a stable and accurate output signal of 4-20
mA with options for 0-5 Vdc, 0-10 Vdc, 0-20 mA and otheroutput signals. Electrical connection is via a detachable DIN
connector allowing easy access to zero and span adjustment. In
addition to the standard 1/2” BSP connection, optional 1” BSP
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also available. Pressure ranges available from 0-4 bar to 0-400bar.
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installation of transmitter to tanks and pipe-work.
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Dimensions(in mm)~35
ELECTRICAL CONNECTION (mA)

Pin No.
1232 wire+supply
4-20mA signal
not ﬁtted
to case~131
ELECTRICAL CONNECTION (Vdc)

Pin No.
1234 wire 3 wire
-supply common+supply +supply+output +output

27 A/F
HEX-output to case

199Protran ® PR3850 Flush DiaphragmPressure Transmitter
Technical DataType:

PR3850PR3851

Ceramic Thick Film

Sensor Technology:

Output Signal:

4-20 mA (2 wire)

Supply Voltage:

13 -36 VDC

Pressure Reference:

PR3852

0-5 V (4 wire)

0-10 V (4 wire)
13-30 VDC

Gauge

Protection of Supply Voltage:

Protected against supply voltage reversal up to 50 V

Standard Pressure Ranges (bar):

0-100 mbar; 0 – 4 bar; 0 – 10 bar; 0 – 25 bar; 0 – 100 bar; 0 – 250 bar; 0 – 400 bar (other options available)

Standard Pressure Ranges (psi):

0-60 psi; 0-150 psi; 0-300 psi; 0-1,500 psi; 0-3,000 psi; 0-6,000 psi (other options available)

Overpressure Safety:

Load Driving Capability:

Accuracy NLHR:

1.5x all ranges
4-20 mA: RL < [UB - 13 V] / 20 mA; (e.g. with supply voltage (UB) of 36V max. load (RL) is 1150 Ω); 0-5 V: max load RL> 5 KΩ; 0-10 V: max load RL > 10 KΩ≤ ±0.3 % of span BFSL

Zero Offset and Span Tolerance:±1.0% FS at room temperature; ±5% FS (approx.) adjustment with easy access trimming potentiometers on
amplified versions only

Operating Ambient Temperature:-20 °C to +85 °C (-4 °F to +185 °F)

Operating Media Temperature:-20 °C to +85 °C (-4 °F to +185 °F)

Storage Temperature:+5 °C to +40 °C (+41 °F to +104°F) Recommended Best PracticeTemperature Effects:±2.5% FS total error band for -20 °C to +70 °C. Typical thermal zero and span coefficients ±0.04% FS/ °C

ATEX/IECEx Approval Option (420mA version only):Ex II 1 G Ex ia IIC T4 Ga (zone 0)
Ex II 1 D Ex ia IIIC T135°C Da (zone 20)
Ex I M 1 Ex ia I Ma (group 1 M1)

ATEX/IECEx Safety Values:

Ui = 28 V
Ii = 119 mA
Pi = 0.65 W
Li = 0.1 μH
Ci = 62 nF
Temperature Range = -20 °C to +70 °C
Max. cable length = 105 m

Electromagnetic Compatibility:

Emissions: EN61000-6-3; Immunity: EN61000-6-2; Certification: CE Marked

Insulation Resistance:> 100 MΩ @ 50 VDC

Response time 10-90 %:10 mS

Wetted Parts:

SAE 316L stainless steel

Pressure Media:

All fluids compatible with SAE 316L stainless steel

Pressure Connection:

1/2” BSP male (G1/2) with standard integral Viton o-ring seal and flush SAE 316L stainless steel diaphragm or 1” BSP
male with semi-flush SAE 316L Stainless steel diaphragm (from 100 mbar up to 4 bar only)

Electrical Connection:

Mating socket EN175301-803 Form A (ex DIN43650) rated IP65 with PG9 cable entry (other options available)

Net. Weight (Kg):

0.3 kgProtran ® PR3850 Flush DiaphragmPressure Transmitter
Order Matrix

OutputWiresType

4-20 mA2PR3850

0-5 V4PR3851

0-10 V

4PR3852

ElectricalConnection/Options

Pressure Range

Process Connection

Electrical Connection/Options
DIN EN175301 plug and socket-Cable outlet 1m screened

AM12 connector

B

Cable outlet 1m screened IP67 protection

CATEX/ IECEx certified with DIN EN175301 plug and socket

EX

Pressure Range in bar
0-100 mbar

00.1

0-4 bar0004

0-10 bar0010

0-25 bar0025

0-100 bar

0100

0-250 bar0250

0-400 bar

0400

Process Connection
1/2” BSP male with flush membrane

BA1” BSP male with semi-flush membrane (PR385x only)BC

Order Number Example

PR3860-0400BA-HT

For options not listed please contact the sales teamDISCLAIMER : ESI Technology Ltd operates a policy of continuous product development. We reserve the right to change specification without
prior notice.All products manufactured by ESI Technology Ltd are calibrated using precision calibration equipment, traceable to national
measurement standards.

t. +44(0)1978 262 255
e. sales@esi-tec.com

www.esi-tec.com