Keller Nanolevel Specifications

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SubmerSible CeramiC TranSmiTTer

high aCCuraCy and STabiliTy for very low rangeS

The Nanolevel from Keller is specically designed for use in level measurement

applications where full scale ranges are less than 10 ft W.C. The Nanolevel’s ceramic

capacitive sensor technology is proven to provide excellent stability in full scale pressure ranges as low as

4 inches of water.

Perfectly suited for pump control applications and monitoring levels in tanks, weirs, and cooling towers, the

Nanolevel is compatible with any standard 2-wire, 4...20 mA current loop that supplies a minimum of 8 but

no more than 28 VDC to the transmitter.

For more information on the Nanolevel, or any other Keller product, please contact Keller America, or view

the entire Keller catalog at http://www.kelleramerica.com/datasheets.html.

FEATURES

Gold-plated ceramic sensing diaphragm.

nanolevel

16-bit internal digital error correction for cost effective low Total Error Band (TEB)

316L SS housing construction.

2-year warranty covers defects in materials and workmanship.

User-rangeable analog output ensures compatibility as requirements change. Converter cable required,

sold separately.

RS485 modied-MODBUS compatible interface allows up to 128 transmitters on a single bus.

Standard dual (analog & RS485) outputs simplify interface to controls, data collection, and telemetry sys-

tems.

Built in the U.S.A. ARRA Section 1605 Compliant.

Standard 3-day lead time.

Output White Black Blue Yellow

2-wire

(mA)

Braided shield wire connected to transmitter housing

OUT /

GND

+Vcc RS485A RS485B

KELLER America Inc.

Newport News, Virginia

www.kelleramerica.com sales@kelleramerica.com

Edition 01/2017

Subject to alterations

877-253-5537

 757-596-6659

Pressure Ranges

1,2

Relative Innite between 0...4 thru 0...120 in. W.C.

1.The Nanolevel can be provided with custom calibration at no extra cost. For uids other than water, the specic gravity must be given at the time the order is placed.

2. Intermediate ranges are realized by deranging the analog output from the next highest basic range: 30, 100, and 300 mbar. Level range may be specied in units of lb/in2(psi), inches WC or feet WC. Keller America uses the International Standard conversion of 2.3067 feet WC/psi.

Electrical

Supply (4-20mA) 8...28 VDC

Load Resistance (mA) <(Supply-8V)/0.022A

5. Nominal values may be higher depending upon cable length. Cable resistance (~70Ω / 1000ft) adds to the supply requirement. In order to insure proper system operation, calculate the minimum required supply voltage (at the source) as follows:

MINIMUM SUPPLY VOLTAGE = 8 + 0.022 (CABLE LENGTH x 0.07) VDC

Accuracy

Static Standard ±0.1% FS, Optional ±0.05% FS

Total Error Band Standard ±0.25% BR, Optional ±0.1% BR

3.Static accuracy includes the combined effects of non-linearity, hysteresis, and non-repeatability at room temperature (25°C). Total Error Band (TEB) includes the combined effects of non-linearity, hysteresis, and non-repeatability as well as thermal dependencies, over the compensated temperature range, expressed as a percentage of the basic range (BR).

The calculation for maximum TEB on intermediate ranges (IR) is:

TEBIR = (BR/IR) X TEB

Output

Current 4...20mA + RS485

Resolution

4. Resolution applies to digital output only. Analog resolution is continuous and limited by the process meter and not the instrument.

0.002%

Optional Accessories

Environmental

Protection Rating IP68

Operating Temp. 0...60° C

Compensated Temp. 10...50° C

Wetted Materials 316 L Stainless Steel

Gold-plated Ceramic

Nitrile

Fluorocarbon

Cable Options Polyethylene for general purpose

Hytrel for hydrocarbon

Tefzel for chemical interaction

Certications

CE EN50081-1, EN50082-2

Drying Tube Assembly Bellows Assembly Cable Hanger Termination Enclosure

Interface Converter Process Meter Signal Line Surge Protector