KROHNE BM702 Part 90.103 Fluid level sensor User Manual Report
Krohne America Inc Part 90.103 Fluid level sensor Report
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Contents
- 1. Test report
- 2. Users Manual
Test report
MEASUREMENT/TECHNICAL REPORT
Company: Krohne America, Inc.
Model: BM702
FCC ID: JH5BM702
Description: This is a report to support a request for a type acceptance.
Equipment Type: Radiolocation device
Report prepared for: Krohne America, Inc.
7 Dearborn Road
Peabody, MA 01960
Phone: 978-535-6060
Fax: 978-535-1720
Report prepared by: Chad A. Bell
Curtis-Straus LLC
527 Great Road
Littleton, MA 01460 USA
Phone: 978-486-8880
FAX: 978-486-8828
FCC Application for Krohne America, Inc. ••FCC ID: JH5BM702 •• Report No. EA0897-1
______________________________________________________________________________ 11-Oct-00
_____________________________________________________________
Curtis-Straus LLC •• 527 Great Road •• Littleton, MA •• TEL (978) 486-8880 •• FAX (978) 486-8828 Page 2 of 14
Table of Contents
LETTER OF AGENCY..................................................................................................................................................3
INTRODUCTION ..........................................................................................................................................................4
Product Description.................................................................................................................................................5
Related Submittal(s) Grants.....................................................................................................................................5
Test Methodology.....................................................................................................................................................6
Test Equipment Used ...............................................................................................................................................9
Operating Frequency.............................................................................................................................................11
Electric Field Strength Radiation Measurements ..................................................................................................11
Frequency Stability ................................................................................................................................................ 13
FCC Application for Krohne America, Inc. ••FCC ID: JH5BM702 •• Report No. EA0897-1
______________________________________________________________________________ 11-Oct-00
_____________________________________________________________
Curtis-Straus LLC •• 527 Great Road •• Littleton, MA •• TEL (978) 486-8880 •• FAX (978) 486-8828 Page 3 of 14
Letter of Agency
FCC Application for Krohne America, Inc. ••FCC ID: JH5BM702 •• Report No. EA0897-1
______________________________________________________________________________ 11-Oct-00
_____________________________________________________________
Curtis-Straus LLC •• 527 Great Road •• Littleton, MA •• TEL (978) 486-8880 •• FAX (978) 486-8828 Page 4 of 14
Introduction
This report is an application for Certification of a Transmitter operating pursuant to Part 90 of the
FCC Rules, Code of Federal Regulations 47. The model number covered by this report is BM702.
This report is designed to demonstrate the compliance of this device with the requirements
outlined in Part 90 of CFR 47 using the methods outlined in Part 2 of CFR 47. The current
revision date, October 1,1998, of each Part has been used for technical requirements.
The confidential information and descriptions included in this application are detailed descriptions
of the products, block diagrams, component specifications, and schematic diagrams. We hereby
respectfully request under the provision of section 0.457d of the code that the documents listed
below be held confidential.
Technical Descriptions and Block Diagrams
Schematics
Bill of Materials
Krohne America, Inc. is requesting that the Technical Descriptions, Block Diagrams, Schematics
and Bill of Materials be kept confidential in the FCC application because of the proprietary design
developed by Krohne America, Inc. that is unique to the industry.
FCC Application for Krohne America, Inc. ••FCC ID: JH5BM702 •• Report No. EA0897-1
______________________________________________________________________________ 11-Oct-00
_____________________________________________________________
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Product Description
The BM 702 level gauge is designed solely for measuring the level, distance, volume and
reflection of liquids, pastes, slurries, particulate materials and solids. Five different antennas are
available for use with the unit depending on the application. There are four horn antennas and
one Wave-Stick antenna. The Wave-Stack antenna has several different part numbers which
correspond to the different lengths of waveguide that lead to the radiating potion of the Wave-
Stick. We tested the 6in Wave-Stick.
Unit Tested
Model Number: BM702
Serial Number: 0/311883.001
Antennas:
3in horn 2116340100
4in horn 2113010100
6in horn 2113000100
8in horn 2112540100
Wave-Stick 3159860600
Related Submittal(s) Grants
There are no other approvals required for this device.
FCC Application for Krohne America, Inc. ••FCC ID: JH5BM702 •• Report No. EA0897-1
______________________________________________________________________________ 11-Oct-00
_____________________________________________________________
Curtis-Straus LLC •• 527 Great Road •• Littleton, MA •• TEL (978) 486-8880 •• FAX (978) 486-8828 Page 6 of 14
Test Methodology
Radiated emission testing was performed according to the procedures in ANSI C63.4 (1992).
Radiated testing was performed at an antenna to EUT distance of 3 meters below 1 GHz, and at
a distance of 3 or 1 meter(s) above 1 GHz. The actual test distance used is noted in the test data
sheets. The device’s performance was investigated to 40GHz. The EUT was powered by a DC
power supply for all tests. All other performance tests were made in accordance with the
procedures outlined in Part 90 of CFR 47.
Each of the antennas was investigated at the fundamental frequency to determine which was the
most efficient radiator – this was the 8in horn antenna. Using the 8in horn antenna, harmonics
and spurious emissions were checked from 7 – 40GHz.
Test Facility
Curtis-Straus LLC
All testing for the range 30–40000MHz was performed at Curtis-Straus (A2LA Certificate Number:
1627-01). The open area test site used to collect the radiated data is located at 527 Great Road,
Littleton, MA 01460. Site “M” was used.
.
FCC Application for Krohne America, Inc. ••FCC ID: JH5BM702 •• Report No. EA0897-1
______________________________________________________________________________ 11-Oct-00
_____________________________________________________________
Curtis-Straus LLC •• 527 Great Road •• Littleton, MA •• TEL (978) 486-8880 •• FAX (978) 486-8828 Page 7 of 14
FCC Application for Krohne America, Inc. ••FCC ID: JH5BM702 •• Report No. EA0897-1
______________________________________________________________________________ 11-Oct-00
_____________________________________________________________
Curtis-Straus LLC •• 527 Great Road •• Littleton, MA •• TEL (978) 486-8880 •• FAX (978) 486-8828 Page 8 of 14
Equivalent Radiated Power
Conducted measurements of the transmitter output were not possible, since the horn antenna is
permanently affixed. Therefore field strength measurements with a horn antenna were done
instead. The following is the calculation of the limit in field strength based on the limit in power.
ERP = Equivalent Radiated Power
PD = Power Density
V = Volts
Fundamental Maximum Measured Output =117.7dBµV/m = 0.767V/m @ 1m
PD = (V/m)^2/(resistance of free space [Ω])
PD = 0.7672/377
PD = 0.00156W/m2
ERP = 4πPD*R2
ERP = 4π(0.00156)*12
ERP = 19.6mW = 0.0196W = Pfund
Emissions 250% or more outside the fundamental should be attenuated by at least:
43dB + 10 log Pfund
25.9dB
To calculate the limit of the harmonics:
E = 5.5/(distance) x SQRT(Ptot) - Formula for E-field from isotropic antenna
Ptot = 19.6mW – 25.9dB = 12.92dBm – 25.9dB = -13dBm = -43dBW
Ptot = 0.00005W
E1m = (5.5/1) * SQRT (0.00005)
E1m = 0.039V/m = -28.1dBV/m = 91.8dBµV/m
E1m = 91.8 dBµµV/m
Therefore the limit in field strength at 250% outside of the authorized bandwidth is as follows:
E1m = 91.8 dBµµV/m
FCC Application for Krohne America, Inc. ••FCC ID: JH5BM702 •• Report No. EA0897-1
______________________________________________________________________________ 11-Oct-00
_____________________________________________________________
Curtis-Straus LLC •• 527 Great Road •• Littleton, MA •• TEL (978) 486-8880 •• FAX (978) 486-8828 Page 9 of 14
Test Equipment Used
SPECTRUM ANALYZERS
XAnalyzer Model No. Company Serial No. Calibration Due
XWHITE
9kHz-22GHz 8593E HP 3547U01252 24-APR-2001
XGREEN
9kHz-26.5GHz 8593E HP 3829A03618 04-OCT-2000
XBLACK
9kHz-12.8GHz 8596E HP 3710A00944 28-JUN-2001
XORANGE
9kHz-26.5GHz E4407B HP US39440975 05-MAY-2001
LISNS
XLISN Model No. Company Serial No. Calibration Due
XYELLOW-BLACK
9kHz-30MHz 8012-50-R-24-BNC Solar 984735 26-OCT-2000
OPEN AREA TEST SITES (OATS)
XSite FCC Code IC Code VCCI Code Calibration Due
X“F”
Florida 93448 IC 2762-F R-468/ C-480 28-JUN-2001
X“M”
Maine 93448 IC 2762-M R-904/ C-480 22-MAY-2001
ANTENNAS
XAntenna Model No. Company Serial No. Calibration Due
XGREEN-BLACK
Bilog: 30MHz-2GHz CBL6112B Chase 2412 23-JUN-2001
XBLACK
Horn: 1-18GHz 3115 EMCO 9703-5148 31-MAY-2001
XWHITE
Std Gain Horn: 18-26.5GHz 3160-09 EMCO 9610-1068 10-MAY-2001
HARMONIC MIXER
XMixer Model No. Company Serial No. Calibration Due
XHARMONIC MIXER
26.5-40 GHZ11970A HP 2332A00900 24-MAY-2001
FCC Application for Krohne America, Inc. ••FCC ID: JH5BM702 •• Report No. EA0897-1
______________________________________________________________________________ 11-Oct-00
_____________________________________________________________
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PREAMPLIFIERS
XPreamplifier Model No. Company Serial No. Calibration Due
XWHITE
1-20GHz SMC-12A MITEQ 426643 09-OCT-2001
XBLACK
0.01-2000MHz ZFL-1000-LN MiniCircuits/
C-S n/a 01-MAR-2001
XYELLOW-BLACK
1-20GHZSMC-12A MITEQ 535055 17-OCT-2000
XYELLOW
18-26.5GHz
AFS4-18002650-
60-8P-4 MITEQ 467559 28-AUG-2001
METEOROLOGICAL METERS
XMeter Model No. Company Serial No. Calibration Due
XTEMPERATURE
/HUMIDITY GAUGE TH300 Dickson 9044101 27-MAR-2001
XATMOSPHERIC
PRESSURE GAUGE BA928 Oregon
Scientific C3166-1 21-AUG-2001
TRACEABLE CLOCKS
XClock Model No. Company Serial No. Calibration Due
X5003 5003 Control
Company 99026940 16-NOV-2000
Unless otherwise noted the calibration interval is one year. All equipment is calibrated using standards
traceable to NIST or other nationally recognized calibration standard.
FCC Application for Krohne America, Inc. ••FCC ID: JH5BM702 •• Report No. EA0897-1
______________________________________________________________________________ 11-Oct-00
_____________________________________________________________
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Measurement Results
Operating Frequency
This device operates at spread source from 8.8-9.8 GHz.
Electric Field Strength Radiation Measurements
Radiated Emissions Table
Curtis-Straus LLC
Date: 03-Jul-00 Company: Krohne America Table: 1
Engineer: David Heald EUT Desc: BM702 Work Order: A0897
Frequency Range:
30-1000 MHz
Measurement Distance:
3 m
Notes:
EUT not mounted in the tank
EUT Max Freq:
9.5 GHz
Antenna Preamp Antenna Cable Adjusted CISPR Class B FCC Class B
Polarization Frequency Reading Factor Factor Factor Reading Limit Margin Result Limit Margin Result
(H / V) (MHz) (dBµV) (dB) (dB/m) (dB) (dBµV/m) (dBµV/m) (dB) (Pass/Fail) (dBµV/m) (dB) (Pass/Fail)
EUT sitting on the table --- --- --- --- --- --- --- --- --- ---
V
86.0
37.2
22.4
8.9
0.8
24.5
40.5
-16.0
Pass
40.0
-15.5
Pass
V
122.0
41.1
22.4
13.0
1.0
32.7
40.5
-7.8
Pass
43.5
-10.8
Pass
V
126.0
38.0
22.3
13.2
1.1
30.0
40.5
-10.5
Pass
43.5
-13.5
Pass
V
134.0
34.8
22.3
12.6
1.1
26.2
40.5
-14.3
Pass
43.5
-17.3
Pass
V
154.0
38.4
22.3
11.4
1.2
28.7
40.5
-11.8
Pass
43.5
-14.8
Pass
V
166.0
46.4
22.3
10.7
1.3
36.1
40.5
-4.4
Pass
43.5
-7.4
Pass
V
170.0
49.6
22.3
10.6
1.3
39.2
40.5
-1.3
Pass
43.5
-4.3
Pass
V
174.0
46.0
22.3
10.4
1.3
35.4
40.5
-5.1
Pass
43.5
-8.1
Pass
V
186.0
48.0
22.4
10.4
1.4
37.4
40.5
-3.1
Pass
43.5
-6.1
Pass
V
190.0
45.1
22.4
10.4
1.4
34.5
40.5
-6.0
Pass
43.5
-9.0
Pass
V
230.0
39.2
22.4
12.2
1.7
30.7
40.5
-9.8
Pass
46.0
-15.3
Pass
V
254.0
33.4
22.5
13.3
1.8
26.0
47.5
-21.5
Pass
46.0
-20.0
Pass
V
270.0
33.6
22.5
13.7
1.9
26.7
47.5
-20.8
Pass
46.0
-19.3
Pass
H
294.0
34.4
22.5
14.4
2.0
28.3
47.5
-19.2
Pass
46.0
-17.7
Pass
H
306.0
31.9
22.5
14.7
2.0
26.1
47.5
-21.4
Pass
46.0
-19.9
Pass
Table Result: Pass by -1.3 dB Worst Freq: 170.0 MHz
Test Site:
"M"
Pre-Amp:
Black
Cable:
65 ft RG8A/U
Analyzer:
Green
Antenna:
Grn-Blk
Radiated Emissions Table
Curtis-Straus LLC
Date: 11-Oct-00 Company: Krohne America Table 2
Engineer: Stacey C. Costa EUT Desc: BM702 Work Order: A0897
Frequency Range:
8.75-10GHz
Measurement Distance:
1 m
Notes:
Comparison at fundamental to determine highest gain antenna
Antenna Preamp Antenna Cable Adjusted --- ---
Polarization Frequency Reading Factor Factor Factor Reading Limit Margin Result Limit Margin Result
(H / V) (MHz) (dBµV) (dB) (dB/m) (dB) (dBµV/m) (dBµV/m) (dB) (Pass/Fail) (dBµV/m) (dB) (Pass/Fail)
3 Inch --- --- --- --- --- --- --- --- --- ---
H
9322.0
87.1
18.0
40.7
2.2
112.0
---
---
---
---
---
---
4 Inch
---
---
---
---
---
---
---
---
---
---
H
9300.0
89.3
18.0
40.7
2.2
114.2
---
---
---
---
---
---
6 Inch
---
---
---
---
---
---
---
---
---
---
H
9319.0
91.9
18.0
40.7
2.2
116.8
---
---
---
---
---
---
8 Inch
---
---
---
---
---
---
---
---
---
---
H
9313.0
92.8
18.0
40.7
2.2
117.7
---
---
---
---
---
---
Wavestick
---
---
---
---
---
---
---
---
---
---
H
9322.0
90.8
18.0
40.7
2.2
115.7
---
---
---
---
---
---
Test Site:
"F"
Pre-Amp:
White
Cable:
3m Sucoflex
Analyzer:
Orange
Antenna:
Black Horn
FCC Application for Krohne America, Inc. ••FCC ID: JH5BM702 •• Report No. EA0897-1
______________________________________________________________________________ 11-Oct-00
_____________________________________________________________
Curtis-Straus LLC •• 527 Great Road •• Littleton, MA •• TEL (978) 486-8880 •• FAX (978) 486-8828 Page 12 of 14
Radiated Emissions Table
Curtis-Straus LLC
Date: 11-Oct-00 Company: Krohne America Table 3
Engineer: Stacey C. Costa EUT Desc: BM702 Work Order: A0897
Frequency Range:
1-18GHz
Measurement Distance:
1 m
Notes:
8in horn antenna
Antenna Preamp Antenna Cable Adjusted --- FCC Part 90
Polarization Frequency Reading Factor Factor Factor Reading Limit Margin Result Limit Margin Result
(H / V) (MHz) (dBµV) (dB) (dB/m) (dB) (dBµV/m) (dBµV/m) (dB) (Pass/Fail) (dBµV/m) (dB) (Pass/Fail)
H9313.0 92.8 18.0 40.7 2.2 117.7 --- --- --- --- --- ---
noise floor
18000.0
40.4
20.4
45.2
3.1
68.3
---
---
---
91.8
-23.5
Pass
Test Site:
"F"
Pre-Amp:
White
Cable:
3m Sucoflex
Analyzer:
Orange
Antenna:
Black Horn
Radiated Emissions Table
Curtis-Straus LLC
Date: 11-Oct-00 Company: Krohne America Table 4
Engineer: Stacey C. Costa EUT Desc: BM702 Work Order: EA0897
Frequency Range:
18-40GHz
Measurement Distance:
1 m
Notes:
8in horn antenna
Antenna Preamp Correction Antenna IF Cable Adjusted --- FCC Part 90
Polarization Frequency Reading Factor Loss Factor Factor Reading Limit Margin Result Limit Margin Result
(H / V) (MHz) (dBµV) (dB) (dB) (dB/m) (dB) (dBµV/m) (dBµV/m) (dB) (Pass/Fail) (dBµV/m) (dB) (Pass/Fail)
noise floor 27000.0 15.4 22.5 23.0 38.9 0.3 55.1 --- --- --- 91.80 -36.7 Pass
noise floor
36000.0
13.8
22.5
23.2
41.4
0.3
56.2
---
---
---
91.80
-35.7
Pass
Test Site:
"F"
Pre-Amp:
Black
Cable:
Sucoflex
Analyzer:
Orange
Antenna:
26.5-40Ghz with mixer
Conducted Emissions Chart
Curtis-Straus LLC
Date:
26-Jul-00
Company:
Krohne America
Table No:
5
Engineer:
Chad A. Bell
EUT Desc:
BM702
Work Order:
EA0897
Notes: Measured on the AC side of the DC supply
Range: 0.45 - 30.0 MHz LISN(s): Yellow-Black Spectrum Analyzer: White
Quasi-Peak FCC Class B Average FCC Class B Overall
Frequency
L1
L2
Reading
Limit
Result
L1
L2
Reading
Limit
Result
Margin
(MHz)
(dBµV)
(dBµV)
(dBµV)
(dBµV)
(Pass/Fail)
(dBµV)
(dBµV)
(dBµV)
(dBµV)
(Pass/Fail)
(dB)
0.45 25.0 25.0 25.0 48.0 Pass 25.0 48.0 Pass -23.0
0.55
28.3
28.2
28.3
48.0
Pass
28.3
48.0
Pass
-19.7
0.65
25.8
26.0
26.0
48.0
Pass
26.0
48.0
Pass
-22.0
1.56
26.1
26.0
26.1
48.0
Pass
26.1
48.0
Pass
-21.9
3.63
25.8
26.0
26.0
48.0
Pass
26.0
48.0
Pass
-22.0
20.30
26.0
26.0
26.0
48.0
Pass
26.0
48.0
Pass
-22.0
FCC Application for Krohne America, Inc. ••FCC ID: JH5BM702 •• Report No. EA0897-1
______________________________________________________________________________ 11-Oct-00
_____________________________________________________________
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Frequency Stability
Work Order:
A0897
Date(s):
11-Aug-00
Engineer:
Mike Buchholz and Matt Deeter
EUT:
BM702
Company:
Krohne America Inc.
Modifications since start date:
none
Modifications this test:
none
Test Equipment Used:
Analyzer: Black
B-M-A Inc Environmental Chamber Model SGTH-315
Atmospheric Conditions:
Temp:
24.0°C
Humidity:
30.60%
Pressure:
1006mbar
Temperature( oC) f
L
*
(GHz) % Deviation f
H
*
(GHz) % Deviation
-30
8.861
0.147
9.715
0.103
-20
8.838
0.113
9.712
0.134
-10
8.841
0.079
9.719
0.062
0
8.844
0.045
9.722
0.031
10
8.844
0.045
9.725
0.000
20
8.848
0.000
9.725
0.000
30
8.867
0.215
9.738
0.134
40
8.874
0.294
9.745
0.206
55
8.874
0.294
9.754
0.298
Stability with 85% and 115% Input Voltage at 20
o
C
24V
8.870
0.000
9.751
0.000
20.4V
8.870
0.000
9.751
0.000
27.6V
8.870
0.000
9.748
0.031
*The fundamental is a spread frequency, swept from fL to fH
FREQUENCY STABILITY DATA SHEET
FCC Application for Krohne America, Inc. ••FCC ID: JH5BM702 •• Report No. EA0897-1
______________________________________________________________________________ 11-Oct-00
_____________________________________________________________
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Emissions Plots:
Fundamental