Mercoid Series SBLTX Submersible Level Transducer Instruction Manual
- June 3, 2024
- Mercoid
Table of Contents
Bulletin L-37
Series SBLTX Submersible Level Transducer
Specifications – Installation and Operating Instructions
Series SBLTX Submersible Level Transducer
The Series SBLTX Submersible Level Transducer is manufactured for years of
trouble free service. The transducer consists of a piezoresistive sensing
element, encased in a 316 SS housing. Bullet nose design protects diaphragm
from damage.
Comes equipped with a 270-pound tensile strength, shielded, vented cable.
Ventilation tube in the cable automatically compensates for changes in
atmospheric pressure above the tank.
Intrinsic Safety Approval Classification
The SBLTX is UL listed for use in Hazardous (Classified) Locations. The
protection method is by Intrinsic Safety, “ia”. It was investigated by UL
under UL Standard 913 8th Edition, CAN/CSA C22.2 No. 60079-0:15 and CAN/CSA
C22.2 No. 60079-11:14.
Hazardous (Classified) Location Intrinsically Safe For:
Class I, Div. 1, Groups A,B,C,D; Class II, Groups E,F,G; Class III
Class I Zone 0 AEx ia IIC T4 Ga
Zone 20 AEx ia IIIC T135°C Da
Ex ia IIC T4 Ga
Ex ia IIIC T135°C Da
Ta = -20°C to 80°C (ETFE Cable)
Ta = -20°C to 65°C (Polyurethane Cable)
Install in accordance with Control Drawing 001833-43.
See Control Drawing 001833-43 for Entity Parameters.
ATEX Certified for: II 1 G Ex ia IIC T4 Ga / II 1 D Ex ia IIIC T135°C Da
(-20°C ≤
Tamb ≤ 80°C ETFE cable) (-20°C ≤ Tamb ≤ 65°C Polyurethane cable)
ATEX EU-Type Certificate: DEMKO 18 ATEX 2080
ATEX Standards: EN IEC 60079-0, EN 60079-11
IECEx Certified for: Ex ia IIC T4 Ga / Ex ia IIIC T135°C Da (-20°C ≤ Tamb ≤
80°C
ETFE cable) (-20°C ≤ Tamb ≤ 65°C Polyurethane cable)
IECEx Certificate of Conformity: IECEx UL 18.0086
IECEx Standards: IEC 60079-0, IEC 60079-11
UKCA Ex Certified for: II 1 G Ex ia IIC T4 Ga / II 1 D Ex ia IIIC T135°C Da
(-20°C
≤ Tamb ≤ 80°C ETFE cable) (-20°C ≤ Tamb ≤ 65°C Polyurethane cable)
UKCA Ex Certificate: UL21UKEX2364
UKCA Ex Standards: EN IEC 60079-0, EN 60079-11
Install in accordance with Control Drawing 001833-46.
See Control Drawing 001833-46 for Entity Parameters.
SPECIFICATIONS
Service: Compatible liquids.
Wetted Materials: Body: 316 SS, 316L SS; Bullet nose: PVC; Cable: Polyether
polyurethane or ETFE; Seals: Fluoroelastomer.
Accuracy: ±0.25% of FS.
Temperature Limit: ETFE cable equipped -4 to 176°F (-20 to 80°C); Polyurethane
cable equipped -4 to 149°F (-20 to 65°C).
Compensated Temperature Range: -4 to 176°F (-20 to 80°C).
Thermal Effect: Less than ±0.02% FS/ °F.
Pressure Limit: 2X FS.
Power Requirement: 10-28 VDC.
Output Signal: 4-20 mA DC, 2-wire.
Response Time: 50 ms.
Max. Loop Resistance: 900 Ω.
Electrical Connections: Wire pigtail.
Mounting Orientation: Suspended in tank below level being measured.
Weight: 2.2 lb (1.0 kg).
Compliance: CE, UKCA, See Intrinsic Safety Approval Classification.
Note: References to ATEX apply to UKCA Ex.
WARNING Use with approved safety barriers using entity evaluation.
CAUTION
Do not exceed specified supply voltage ratings. Permanent damage not covered
by warranty will result. This device is not designed for 120 or 240 VAC
operation. Use only on 10-28 VDC.
INSTALLATION
- Location: Select a location where the temperature of the transducer will be between -4 and 176°F (-20 to 80°C) for ETFE cable or -4 and 149°F (-20 to 65°C) for polyurethane cable. Distance from the receiver is limited only by total loop resistance.
- Position: The transducer is not position sensitive. However all standard models are originally calibrated with the unit in a position with the pressure connection downward. Although they can be used at other an gles, for best accuracy it is recommended that units be installed in the position calibrated at the factory.
- Mounting: The transducer can be mounted via several methods. It can be suspended from the electrical cable, it can be placed resting on the bottom of the tank in either horizontal or vertical orientation, or it can be attached to a pipe or hang wire by the 1/2˝ NPT male connection on the top of the housing.
- Electrical Connections Wire Length: The maximum length of wire connecting the transducer and receiver is a function of wire size and receiver resistance. Wiring should not contribute more than 10% of the receiver resistance to total loop resistance. For extremely long runs (over 1000 feet), choose receivers with higher resistance to minimize the size and cost of connecting leads. Where wiring length is under 100 feet, wire as small as 22 AWG can be used.
- Wiring: An external power supply delivering 10-28 VDC with minimum current capability of 40 mA DC (per transducer) is required to power the control loop. See Figure A for connection of the power supply, transducer and receiver. The range of appropriate receiver load resistance (RL) for the DC power supply voltage available is expressed by the formula:
| RL Max = Vps – 10 V | Vps – 10 V |
|---|
20 mA DC
Shielded cable is recommended for control loop wiring.
Black wire is negative [-] and red wire is positive [+].
DWYER INSTRUMENTS, LLC
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone:219-879-8000
Fax:219-872-9057
www.dwyer-inst.com
e-mail: info@dwyermail.com
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>