Series PBLTX Submersible Level Transducer
Specifications - Installation and Operating Instructions
Bulletin L-23
The PBLTX Submersible Level Transducer is manufactured
for years of trouble free service in the harshest applications. The
PBLTX measures the height of liquid above its position in the
tank referenced to atmospheric pressure. The transducer con-
sists of a piezoresistive sensing element, encased in a 316 SS
housing. Perfect for wastewater and slurry applications with fea-
tures to protect the unit from these demanding applications.
Large diameter 316 SS diaphragm seal is non-clogging and
damage resistant to floating solids.
Comes equipped with a 270-pound tensile strength, shielded,
vented cable. Ventilation tube in the cable automatically com-
pensates for changes in atmospheric pressure above the tank.
The vent is protected with a maintenance free filter eliminating
particulate or water droplets from entering the transducer.
Intrinsic Safety Approval Classification
The PBLTX is UL listed for use in Hazardous (Classified) Loca-
tions. The protection method is by Intrinsic Safety, “ia”. It was in-
vestigated by UL under UL Standard 913 Sixth Edition and CSA
Standard No. 157-92.
For use in Hazardous (Classified) Locations:
Class I Div. 1 Groups A,B,C,D
Class II Div. 1 Groups E,F,G
Class III Div. 1
Temperature Code: T4 @ 80°C ambient
Install in accordance with control drawing 01-700797-00.
WARNING: To prevent ignition of flammable or
combustible atmospheres, disconnect power be-
fore servicing.
Use with approved safety barriers using entity
evaluation.
SPECIFICATIONS
Service: Compatible liquids.
Wetted Materials: 316 SS, 316L SS, Buna-N, cable: ETFE or
polyurethane.
Accuracy: ±0.25% full scale.
Temperature Limit: 0 to 176ºF (-18 to 80ºC).
Compensated Temperature Range: 0 to 176ºF (-18 to 80ºC).
Thermal Effect: Less than ±.02%/ FS/ºF.
Pressure Limit: 2X full scale.
Power Requirement: 10-28 VDC.
Output Signal: 4 to 20 mA DC, two wire.
Response Time: 50 msec.
Max. Loop Resistance: 900 ohms.
Electrical Connection: Wire pigtail.
Mounting Orientation: Suspended in tank below level being
measured. Can be placed on the bottom of the tank on its side.
Weight: 4.3 lb (2.0 kg).
Agency Approvals: CE, UL Intrinsically Safe to UL Standard
913. (See Intrinsic Safety Approval Classification).
The following standards were used for CE approval:
IEC 61000-4-2: 2001
IEC 61000-4-3: 2006
IEC 61000-4-4: 2004
IEC 61000-4-5: 2005
IEC 61000-4-6: 2006
IEC 61000-4-8: 2001
CENELEC EN 55011: 2003
CENELEC EN 61326: 2003
89/336/EEC EMC Directive
MERCOID DIVISION
DWYER INSTRUMENTS, INC.
P.O. BOX 258 • MICHIGAN CITY, IN 46361 U.S.A.
Phone: 219/879-8000 www.dwyer-inst.com
Vmax
28VDC
Imax
93mA
Ci
0.051_F
Li
240_H
Entity Parameters
Pi
0.651W
60˚
TYP
ø1/4 x THRU
[ø6.35 x THRU]
ø3-7/16
[ø87.31] ø1/4 [ø6.35] x THRU
ON A ø1-39/64 [ø40.88] B.C.
8-3/32
[205.58]
2-3/16
[55.56]
BREATHER TUBE
ø1 [25.40]1/2 NPT SUBMERSIBL
CABLE
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