®

Protran PR3420
Sludge Platform Submersible
Depth/Level Pressure Transmitter• Sludge Platform
orm toto raisei e ssensor
ensor above
sediment level• Piezoresistive
sensor technology
zorresitechhnology forexcellent stability and repeatability• Robust stainless steel construction• Pressure
ressure ranges available fromfro 0-1 mWG• High strength, moulded cable
forc
ingress
protection against ingr
• ATEX/IECEx option available(includes M1 for mining applications)(inVers. 20/1/Eng

Protran ® PR3420 Sludge Platform Submersible Depth/Level Pressure Transmitter
Technical DataDescription
The PR3420 submersible depth and level transmitter has been designed for accurate level measurement
where sediment is present. The integral sludge platform ensures that the sensing element is elevatedabove the sediment level.
The submersible range of pressure transmitters has been designed for the accurate measurement of the depth and level of liquids
in many applications. Standard output signal is 4-20 mA, and electrical connection is via a high strength moulded cable with integral
tube for trouble-free venting to the surface atmosphere.
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Dimensions(in mm)ELECTRICAL CONNECTION (mA)

RedBlue
Screen+supply
4-20mA signal
to caseoo30

310112120

Protran ® PR3420 Sludge Platform Submersible Depth/Level Pressure Transmitter
Technical Data
Type:

PR3420

PR3421

Sensor Technology:

PR3422Isolated Piezoresistive Silicon

Output Signal:

4-20 mA (2 wire)

0-5 Vdc (4 wire)

0-10 Vdc (4 wire)

Supply Voltage:

13 -36 VDC

13 -30 VDC

13 -30 VDC

Pressure Reference:Protection of Supply Voltage:

Vented Gauge

Protected against supply voltage reversal up to 50 V

Lightening Protection:

On Request

Standard Pressure Ranges (mWG):

0-1 mWG; 0-10 mWG; 0-20 mWG; 0-50 mWG; 0-100 mWG; 0-250 mWG; 0-500 mWG (other options available)

Standard Pressure Ranges (psi):

0-3 psi; 0-5 psi; 0-7.5 psi; 0-10 psi; 0-15 psi; 0-30 psi; 0-50 psi; 0-100 psi; 0-200 psi; 0-300 psi (other optionsavailable)

Overpressure Safety:

Load Driving Capability:

2x 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; 10 mV/V:
n/a; 0 – 5 V: max. load RL > 5 KΩ; 0 – 10 V: max. load RL > 10 KΩ

Accuracy NLHR:≤ ±0.3 % of span BFSL

Zero Offset and Span Tolerance:±0.5% FS at room temperature

Operating Ambient Temperature:-20 °C – +60 °C (-4 °F to +140 °F)

Operating Media Temperature:

Media must not freeze around the sensor

Storage Temperature:+5 °C to +40 °C (+41 °F to +104°F) Recommended Best PracticeTemperature Effects:±2.0% FS total error band for -20 °C – +60 °C. Typical thermal zero and span coefficients +/0.03%FS/°C

ATEX/IECEx Approval Option (4-20mA
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:
Insulation Resistance:

Emissions: EN61000-6-4; Immunity: EN61000-6-2; Certification: CE Marked> 100 MΩ @ 50 VDC

Wetted Parts:

SAE 316L stainless steel housing and diaphragm, polyurethane cable and nitrile (NBR) o-ring seal; 303
stainless steel sludge platform

Pressure Media:

All fluids compatible with SAE 316L stainless steel, 303 stainless steel, polyurethane and nitrile (NBR)

Pressure Connection:

Sludge platform

Electrical Connection:

Submersible black polyurethane cable moulded to housing. With integral screen, Kevlar strain cord and venttube. Conductor size 7/0.20 mm (24 AWG), resistance 8.9 Ω / 100 m (x2)Net. Weight (Kg):

2.5 KgProtran ® PR3420 Sludge Platform Submersible Depth/Level Pressure Transmitter
Order Matrix

OutputWires

Type4-20mA

2

PR3420

0-5 V

4PR34210-10 V4

PR3422

ElectricalConnector

Pressure Range

ProcessConnection

Cable Length

Electrical Connection/ Option
No special option required-ATEX/ IECEx certified

EX

Pressure Range in mWG (Metres Water Gauge)
0-1 mWG

0001

0-5 mWG

0005

0-10 mWG

0010

0-50 mWG

0050

0-100 mWG

0100

0-250 mWG

0250

0-500 mWG

0500

Process Connection
Sludge platform

AY

Cable Length
Cable length is specified by adding a 3 digit numeric code as a suffix to the part number.
e.g. -010 = 10 metres.
(Max cable length 500 metres)
Order Number Examplexxx

PR3420-0010AY-010

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 withoutprior 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