Metek RCT 10, RCT 11, RCT 12, RCT 13 Installation Manual

A Leader in

Level Measurement

For Assistance Call 1-800-527-6297

Outside North America + 215-674-1234

Installation and

Operating Instructions

RCT 10,11, 12 & 13

Series Transmitter

with HART® Protocol

using 409-T Electronics

U.S. and Canada: 1-800-553-9092
24-Hour Service: 1-800-527-6297
International: [phone]
Fax: [phone]
E-mail: [e-mail]
Website: www.drexelbrook.com

AMETEK Drexelbrook makes no warranty of any kind with regard to the material contained in this

manual, including, but not limited to, implied warranties or fitness for a particular purpose. Drexelbrook
shall not be liable for errors contained herein or for incidental or consequential damages in connection
with the performance or use of material.

Copyright 2007 AMETEK Drexelbrook

EDO# 9-10-111
RCT 10, 11, 12 & 13-LM
Issue #6

RCT Series Transmitter

with HART® Protocol

using 409-T Electronics

An ISO 9001 Certified Company

205 Keith Valley Road, Horsham, PA 19044
U.S. and Canada: 1-800-553-9092
24-Hour Service: 1-800-527-6297
International: [phone]
Fax: [phone]
E-mail: [e-mail]
Website: www.drexelbrook.com

Table Of Contents

Table of Figures .............................................................................................................................. vii

Section 1: Introduction ............................................................................................................... 1

1.1 System Description ........................................................................................................... 1

1.2 Technology ........................................................................................................................ 1

1.3 Models Available ............................................................................................................... 2

1.4 Sensing Element Model Numbering ................................................................................. 4

1.5 Area Classifications .......................................................................................................... 4

Section 2: Installation ................................................................................................................. 5

2.1 Unpacking ......................................................................................................................... 5

2.2 Hazardous Location Installations ...................................................................................... 5

2.3 Mounting the Electronic Unit ............................................................................................. 5

2.4 Wiring the Electronic Unit ............................................................................................... 10

2.5 Wiring the Sensing Element ........................................................................................... 11

2.6 Spark (Static Electricity) Protection ................................................................................ 12

2.7 Surge Voltage (Lightning) Protection .............................................................................. 13

2.8 RFI (Radio Frequency Interference) Filters ..................................................................... 14

2.9 Electrostatic Filters ......................................................................................................... 16

2.10 Digital Integral Meter ....................................................................................................... 16

Section 3: Configuration and Calibration with Drexelbrook PC Software ........................... 19

3.1 General Description ........................................................................................................ 19

3.2 Model Number ................................................................................................................ 19

3.3 System Requirements .................................................................................................... 19

3.4 Installing The RS232 Modem .......................................................................................... 20

3.4.1 Installing The USB Modem ............................................................................................. 21

3.5 Install the Windows Version HARTWin 2.1 Software on Hard Drive ............................... 22

3.6 Description of Function Keys .......................................................................................... 22

3.7 Configuration................................................................................................................... 24

3.7.1 Level Configuration ......................................................................................................... 24

3.7.2 Vessel Configuration ....................................................................................................... 25

3.7.3 Lower and Upper Range Values (LRV and URV) ........................................................... 25

3.8 Calibration ....................................................................................................................... 26

3.8.1 Point Calibration .............................................................................................................. 27

3.8.2 Level Calibration ............................................................................................................. 28

3.8.3 Application Example ....................................................................................................... 28

3.9 PC Status Messages ...................................................................................................... 30

3.10 Set D/A Trim .................................................................................................................... 31

3.11 Strapping Table ............................................................................................................... 31

3.12 Digital Integral Meter Configuration ................................................................................ 33

3.13 Save/Print Entries ........................................................................................................... 33

3.14 Validation ........................................................................................................................ 34

3.14.1 Validation Design Concept .............................................................................................. 34

3.14.2 Validation Procedures ..................................................................................................... 34

3.14.3 Validation Results ........................................................................................................... 36

3.15 Calibration & Configuration via 401-44-3 Display/Keypad .............................................. 37

Section 4: Configuration and Calibration with Model 275 with

Drexelbrook Device Description ............................................................................ 39

4.1 Drexelbrook Device Description ...................................................................................... 39

4.2 Start-up ........................................................................................................................... 40

4.3 Configuration................................................................................................................... 41

4.4 Calibration ....................................................................................................................... 42

4.4.1 Point Calibration .............................................................................................................. 43

4.4.2 Capacitance Calibration .................................................................................................. 44

4.4.3 D/A Trim .......................................................................................................................... 44

4.4.4 Strapping Table ............................................................................................................... 46

Section 5: Configuration & Calibration with Model 275 Communicator without

a Device Description ............................................................................................... 47

5.1 Range/Span Control ....................................................................................................... 47

5.2 Basic Rules & Conventions of HART Configuration Software (Model 275) .................... 48

5.3 Tag ID.............................................................................................................................. 48

5.4 Set Up Procedures ......................................................................................................... 49

5.5 Reading Input and Output ............................................................................................... 52

5.6 Calibration Using Actual Tank Level ................................................................................ 53

5.7 Bench Calibration (if needed) ......................................................................................... 54

5.7.1 Bench Calibration Information Sheet .............................................................................. 55

5.8 Point Calibration .............................................................................................................. 56

5.8.1 Fine Tuning Calibration ................................................................................................... 56

5.8.2 Selecting Engineering Units ............................................................................................ 56

5.9 Handheld Calibrator Error Messages .............................................................................. 57

Section 6: Troubleshooting ...................................................................................................... 59

6.1 Identifying a Problem/Symptom ...................................................................................... 60

6.1.2 Error Codes .................................................................................................................... 60

6.2 Troubleshooting Loop Connection .................................................................................. 60

6.3 Rosemount Model 268 or 275 Calibrator Cannot Identify or Find Device ....................... 61

6.4 Rosemount Model 275 Calibrator with

Device Description Cannot Identify or Find Device ......................................................... 61

6.5 RCT Series Transmitter Does not Communicate with

Drexelbrook PC software ................................................................................................ 62

6.6 Troubleshooting Transmitter ............................................................................................ 63

6.6.1 Transmitter Drift Test ....................................................................................................... 64

6.7 Troubleshooting Sensing Element .................................................................................. 65

6.8 Troubleshooting Coaxial Cable ....................................................................................... 66

6.9 Static Electricity .............................................................................................................. 68

6.10 Radio Frequency Interference ......................................................................................... 68

6.11 Factory Assistance .......................................................................................................... 68

6.12 Field Service ................................................................................................................... 69

6.13 Customer Training ........................................................................................................... 69

6.14 Return Equipment ........................................................................................................... 69

6.15 RCT Series Troubleshooting Guide................................................................................. 71

Section 7: Specifications .......................................................................................................... 73

7.1 Transmitter Specifications ............................................................................................... 73

7.2 Coaxial Cable Specifications .......................................................................................... 74

7.3 Enclosure Specifications ................................................................................................. 74

7.4 Approvals Available ......................................................................................................... 75

7.4.1 ATEX Approvals - Install Per 420-0004-203-ID ............................................................... 75

7.4.2 CSA Approvals - Install Per 420-0004-225-CD ............................................................... 76

7.4.3 FM Approvals - Install Per 420-0004-224-CD ................................................................. 76

Section 8: Normal Maintenance ............................................................................................... 77

8.1 Viewport Cleaning ........................................................................................................... 77

Appendix A: Approval Drawings ................................................................................................A-1

A.1 ATEX APPROVAL DRAWINGS .....................................................................................A-1

A.2 CSA APPROVAL DRAWINGS ..................................................................................... A-12

A.3 FM APPROVAL DRAWINGS ....................................................................................... A-29

Table of Figures

Figure 1-2 RF Admittance Sensing Element with Cote-Shield ..................................................... 1

Figure 1-1 Capacitance Sensing Element .................................................................................... 1

Figure 2-1 Recommended Conduit Connection ........................................................................... 6

Figure 2-2 Mounting Dimensions ................................................................................................. 6

Figure 2-3 Installing Sensing Element .......................................................................................... 8

Figure 2-4 Common Installation Mistakes .................................................................................... 8

Figure 2-5 Installing Sensing Element in Agitated Vessel ............................................................ 9

Figure 2-6 Providing Ground Reference ....................................................................................... 9

Figure 2-7 RCT Series Wiring Connections Integral Mounting ................................................... 10

Figure 2-8 RCT Series Wiring Connections, Remote Mounting ................................................. 10

Figure 2-9 Spark Protection for Integral Sensing Elements ....................................................... 12

Figure 2-10 Spark Protection for Remote Sensing Elements ....................................................... 13

Figure 2-11 Surge Voltage Protection .......................................................................................... 14

Figure 2-12 Radio Frequency Interference (RFI) Filters ............................................................... 15

Figure 2-13 Electrostatic Filter ..................................................................................................... 16

Figure 2-14 Digital Meter in Housing with Viewport...................................................................... 17

Figure 3-1 RS232 Modem Assembly & Loop Connection .......................................................... 20

Figure 3-1a USB Modem Assembly & Loop Connection ............................................................. 21

Figure 3-2 Selecting COM ports during software installation ..................................................... 22

Figure 3-3 PC Software Menu Screen ....................................................................................... 23

Figure 3-4 Configure Transmitter from Menu screen .................................................................. 24

Figure 3-5 Level Configuration from Menu screen ..................................................................... 24

Figure 3-6 Vessel Configuration from Menu screen ................................................................... 25

Figure 3-7 LRV & URV Configuration from Menu screen ........................................................... 25

Figure 3-9 Range Span Jumpers ............................................................................................... 26

Figure 3-10 Point Calibration from Menu screen .......................................................................... 27

Figure 3-11 Level Calibration area of Menu screen ..................................................................... 28

Figure 3-12 Application Example Diagram ................................................................................... 29

Figure 3-13 PC Software Menu Screen View of Application Example ........................................ 29

Figure 3-13a PC Software Menu Screen View of Main Menu ....................................................... 30

Figure 3-14 Setting D/A Trim Menu Screen "Pop-Ups" ............................................................... 31

Figure 3-15 Menu Screen Transforms to Strapping Table ............................................................ 32

Figure 3-16 Configure Meter Pop-up from Menu Screen; values relate to LRV & URV ............... 33

Figure 3-17 Print Pop-up from Menu ............................................................................................ 33

Figure 3-18 Capacitance on Menu Screen ................................................................................... 34

Figure 3-19 Real Time View Pop-up from Menu Screen .............................................................. 35

Figure 3-20 Typical Printout of Transmitter Data .......................................................................... 36

Figure 4-1 Typical Transmitter Loop ........................................................................................... 40

Figure 6-1 Place capacitor on transmitter from probe to ground terminals ................................ 63

Figure 6-2 C-Box Adjustment ..................................................................................................... 64

Figure 6-3 Span Range Capacitance Values ............................................................................. 64

Figure 6-4 Transmitter Drift Test ................................................................................................. 65

Figure 6-5 Sensing Element Testing, Material Below the Sensing Element ............................... 66

Figure 6-6 Sensing Element Testing, Material Covering the Sensing Element .......................... 66

vii

SECTION 1

Introduction

SECTION 1: INTRODUCTION

1.1 System Description

The instructions in this manual are for the AMETEK Drexelbrook

RCT Series RCT Series for level measurement in liquids, slurries,
interfaces, and granulars.

k

air

d

C

C =

A

k

k

k A

d

air

media

C

d

A

k

C

media

A

k

=

d

Figure 1-1 Capacitance

Sensing Element

1.2 Technology

In a simple capacitance sensing element, when the level rises and

R

Xc

Oscillator circuitry through phase shift

cancels small amounts of RF current

flow (both Resistive and Capacitive)

caused by coating

High Resistance

Xc

R

Coating

TFE Insulation
Sensing Element

Figure 1-2

RF Admittance Sensing

Element with Cote-Shield

(More Coating is

Easier to Ignore)

Tank Wall

Little to No Resistance

Each AMETEK Drexelbrook RCT Series system consists of a RCT
Series two-wire, 4-20 mA electronic unit and a 700 series sensing
element. A 380 series connecting cable is also supplied for connection
of the sensing element to the electronic unit.

The RCT Series system is an admittance-to-current transducer. A
change in level produces a change in admittance which results in a
change of current. It is termed a two-wire transmitter because the
same two wires that are used to power the unit also indicate the
change in level (4-20 mA).

material covers the sensing element, the capacitance within the
circuit between the sensing element and the medium (conductive
applications) or the sensing element and the vessel wall (insulating
applications) increases. This is due to the dielectric constant (k)
of the material which causes a bridge misbalance. The signal is

demodulated (rectied), amplied, and the output is increased. There

are drawbacks, however, especially when there is coating of the
sensing element.

An RF Admittance level transmitter is the next generation. Although
similar to the capacitance concept, RCT Series employs a radio
frequency signal and adds the Cote-Shield™ circuitry within the
Electronics Unit.

Built-in oscillator buffer and chopper drive circuits permit separate
measurement of resistance and capacitance. Since the resistance
and the capacitance of any coating are of equal magnitude (by
physical laws), the error generated by a coating can be measured and
subtracted from the total output.

This patented Cote-Shield™ circuitry is designed into the RCT Series
and enables the instrument to ignore the effect of buildup or material
coating on the sensing element. The sensing element is mounted
in the vessel and provides a change in RF admittance indicating
presence of material.

The Cote-Shield™ circuitry prevents the transmission of RF current
through the coating on the sensing element. The only path to ground
available for the RF current is through the material being measured.

The result is an accurate measurement regardless of the amount of
coating on the sensing element. By far the most versatile technology
available it works with all types of materials in a vast array of
conditions, from cryogenics to high temperature, from vacuum to
10,000psi pressure.

1

RCT 10, 11, 12, 13 Series

6 E 700-0005-285
6 F 700-0005-385
6 G 700-0205-002
6 H 700-0205-005
6 I 700-0205-015
6 J 700-0205-018
6 K 700-0205-020
6 L 700-0205-075
6 M 700-0205-079

7 0 700-0008-122
7 1 700-0008-124 Hast C
7 2 700-0008-126 CS
7 3 700-0008-126 316SS
7 4 700-0008-134
7 5 700-0008-136
7 6 700-0008-144
7 7 700-0008-144 91-77
7 8 700-0008-144 91-299
7 9 700-0008-174 CS
7 A 700-0008-174 316SS
7 B 700-0008-174 Hast C
7 C 700-0008-222
7 D 700-0008-222 91-269
7 E 700-0008-242
7 F 700-0018-122
7 G 700-0018-124 Hast C
7 H 700-0018-126 CS
7 I 700-0018-126 316SS
7 J 700-0018-134
7 K 700-0018-136
7 L 700-0008-144
7 M 700-0018-144 91-77
7 N 700-0018-144 91-299
7 O 700-0018-174 CS
7 P 700-0018-174 316SS
7 Q 700-0018-174 Hast C
7 R 700-0018-222
7 S 700-0018-222 91-269
7 T 700-0018-24

2

8 0 700-0001-051
8 1 700-0001-052
8 2 700-0001-053
8 3 700-0001-054
8 4 700-0001-061
8 5 700-0001-062
8 6 700-0001-063
8 7 700-0001-064
8 8 700-0002-041
8 9 700-0002-042
8 A 700-0002-043
8 B 700-0002-044
8 C 700-0002-051
8 D 700-0002-052
8 E 700-0002-053
8 F 700-0002-054
8 G 700-0002-061
8 H 700-0002-062
8 I 700-0002-063
8 J 700-0002-064

9 0 700-0001-034
9 1 700-0001-040

9 2 700-0001-044
9 3 700-0001-045
9 4 700-0001-324
9 5 700-0002-027 90-635
9 6 700-0002-029
9 7 700-0002-033
9 8 700-0002-040
9 9 700-0002-057 90-523
9 A 700-0002-057 91-006
9 B 700-0002-057 91-232
9 C 700-0002-059
9 D 700-0002-321 90-674
9 E 700-0003-009
9 F 700-0004-031
9 G 700-0004-050
9 H 700-0005-018 91-26
9 I 700-0005-018 91-195
9 J 700-0005-348 91-59
9 K 700-0009-002
9 L 700-0009-024
9 M 700-0009-057
9 N 700-0011-001
9 O 700-0011-003
9 P 700-0011-004
9 Q 700-0011-015
9 R 700-0021-001
9 S 700-0021-002
9 T 700-0021-003
9 U 700-0021-007
9 V 700-9000-494
N N System without Sensing

Element

1.3 Models Available

RCT RF Series

Technology

R RF

Measurement Type

C Continuous

Input

T Two Wire

Output Type

1 4-20 mA HART

R C T 01

Application Type

2 100 Khz 0 Degree

3 100 Khz 45 Degree

Digital Display

0 Without Meter

1 With Meter and Keypad

Reserved

Approvals

0 No Approval (Europe)

1 No Approval (NAFTA)

F FM Approval

C CSA Approval

A ATEX Approval

Surge/Noise Suppression

0 No additional filtering required

1 Loop RFI Filter

2 Probe RFI Filter

3 Loop and Probe RFI Filter

4 Loop Surge Filter

5 Probe Surge Filter

6 Loop and Probe Surge Filter

7 RFI and Surge Protection

8 Desalter Filter

Remote/Integral & Cable

0 Integral

1 Remote - no cable

2 Remote - 10 feet cable GP

3 Remote - 25 feet cable GP

4 Remote - 35 feet cable GP

5 Remote - 50 feet cable GP

6 Remote - 75 feet cable GP

7 Remote - 100 feet cable GP

8 Remote - 25 feet Tri-ax

9 Remote - 50 feet Tri-ax

A Remote - 75 feet Tri-Ax

B Remote - 100 feet Tri-Ax

C Remote - 10 feet Hi-temp GP composite

D Remote - 25 feet Hi-temp GP composite

E Remote - 35 feet Hi-temp GP composite

F Remote - 50 feet Hi-temp GP composite

GHRemote - 75 feet Hi-temp GP composite

Remote - 100 feet Hi-temp GP composite

Continued on Next Page

2

Sensing Element

0 0 700-1202-001
0 1 700-1202-012
0 2 700-1202-014
0 3 700-1202-018
0 4 700-1202-041
0 5 700-1202-041 (91-303)
0 6 700-1202-031
0 7 700-1202-010
0 8 700-1202-041 w/conc
0 9 700-1202-033
1 0 700-0001-018
1 1 700-0201-005
1 2 700-0201-005 Hast. C
1 3 700-0201-036
1 4 700-0202-002
1 5 700-0202-043
1 6 700-0002-360
1 7 700-0202-036
1 8 700-0001-022
1 9 700-0001-016
1 A 700-0001-024 Hast. C
1 B 700-0001-026 CS
1 C 700-0001-026 316SS
1 D 700-0001-074 CS
1 E 700-0001-074 316SS
1 F 700-0001-074 Hast. C
1 G 700-0001-344
1 H 700-0001-344 91-175

2 0 700-0209-002
2 1 700-209-002 91-112
2 2 700-0209-024
2 3 700-0002-023
2 4 700-0002-024 316SS
2 5 700-0002-024 Hast C
2 6 700-0002-027
2 7 700-0002-027 91-220
2 8 700-0002-028
2 9 700-0002-036
2 A 700-0002-037
2 B 700-0002-056
2 C 700-0002-057
2 D 700-0002-057 91-120
2 E 700-0002-224 316SS
2 F 700-0002-224 Hast C
2 G 700-0002-227
2 H 700-0002-321
2 I 700-0002-363

2 9 700-0002-036
2 A 700-0002-037
2 B 700-0002-056
2 C 700-0002-057
2 D 700-0002-057 91-120
2 E 700-0002-224 316SS
2 F 700-0002-224 Hast C
2 G 700-0002-227
2 H 700-0002-321
2 I 700-0002-363

3 0
3 1 700-0029-001
3 2 700-0029-002
3 3 700-0029-003
3 4 700-0029-004

3 5 700-0029-005
3 6 700-0029-021
3 7 700-0029-022
3 8 700-0029-023
3 9 700-0029-024
3 A 700-0029-025
3 B 700-0029-066
3 C 700-0029-102
3 D 700-0029-103
3 E 700-0029-104
3 F 700-0029-105
3 G 700-0029-106

4 0 700-0005-018
4 1 700-0005-018 91-13
4 2 700-0005-019
4 3 700-0005-028
4 4 700-0005-029
4 5 700-0005-035
4 6 700-0005-035 91-130
4 7 700-0005-048
4 8 700-0005-054
4 9 700-0005-085
4 A 700-0005-085 Hast C
4 B 700-0005-096
4 C 700-0005-348
4 D 700-0005-354
4 E 700-0205-078

5 0 700-0207-001
5 1 700-0207-002
5 2 700-0207-003
5 3 700-0207-004
5 5 700-0207-006
5 6 700-0201-025
5 7 700-0201-026
5 8 700-0201-027
5 9 700-0201-051
5 A 700-0201-052
5 B 700-0201-058

5 C 700-0201-059
5 D 700-0202-053
5 E 700-0202-054
5 F 700-0202-056

R C T 01

6 A 700-0005-009
6 B 700-0005-036
6 C 700-0005-045
6 D 700-0005-095
6 E 700-0005-285
6 F 700-0005-385
6 G 700-0205-002
6 H 700-0205-005
6 I 700-0205-015
6 J 700-0205-018
6 K 700-0205-020
6 L 700-0205-075
6 M 700-0205-079

7 0 700-0008-122
7 1 700-0008-124 Hast C
7 2 700-0008-126 CS
7 3 700-0008-126 316SS
7 4 700-0008-134
7 5 700-0008-136
7 6 700-0008-144
7 7 700-0008-144 91-77
7 8 700-0008-144 91-299
7 9 700-0008-174 CS
7 A 700-0008-174 316SS
7 B 700-0008-174 Hast C
7 C 700-0008-222
7 D 700-0008-222 91-269
7 E 700-0008-242
7 F 700-0018-122
7 G 700-0018-124 Hast C
7 H 700-0018-126 CS
7 I 700-0018-126 316SS
7 J 700-0018-134
7 K 700-0018-136
7 L 700-0008-144
7 M 700-0018-144 91-77
7 N 700-0018-144 91-299
7 O 700-0018-174 CS
7 P 700-0018-174 316SS
7 Q 700-0018-174 Hast C
7 R 700-0018-222
7 S 700-0018-222 91-269
7 T 700-0018-24

2

8 0 700-0001-051
8 1 700-0001-052
8 2 700-0001-053
8 3 700-0001-054
8 4 700-0001-061
8 5 700-0001-062
8 6 700-0001-063
8 7 700-0001-064
8 8 700-0002-041
8 9 700-0002-042
8 A 700-0002-043
8 B 700-0002-044
8 C 700-0002-051
8 D 700-0002-052
8 E 700-0002-053
8 F 700-0002-054
8 G 700-0002-061
8 H 700-0002-062
8 I 700-0002-063
8 J 700-0002-064

9 0 700-0001-034
9 1 700-0001-040

9 2 700-0001-044
9 3 700-0001-045
9 4 700-0001-324
9 5 700-0002-027 90-635
9 6 700-0002-029
9 7 700-0002-033
9 8 700-0002-040
9 9 700-0002-057 90-523
9 A 700-0002-057 91-006
9 B 700-0002-057 91-232
9 C 700-0002-059
9 D 700-0002-321 90-674
9 E 700-0003-009
9 F 700-0004-031
9 G 700-0004-050
9 H 700-0005-018 91-26
9 I 700-0005-018 91-195
9 J 700-0005-348 91-59
9 K 700-0009-002
9 L 700-0009-024
9 M 700-0009-057
9 N 700-0011-001
9 O 700-0011-003
9 P 700-0011-004
9 Q 700-0011-015
9 R 700-0021-001
9 S 700-0021-002
9 T 700-0021-003
9 U 700-0021-007
9 V 700-9000-494
N N System without Sensing

Element

1.3 Models Available (Continued)

Sensing Element

0 0 700-1202-001
0 1 700-1202-012
0 2 700-1202-014
0 3 700-1202-018
0 4 700-1202-041
0 5 700-1202-041 (91-303)
0 6 700-1202-031
0 7 700-1202-010
0 8 700-1202-041 w/conc
0 9 700-1202-033
1 0 700-0001-018
1 1 700-0201-005
1 2 700-0201-005 Hast. C
1 3 700-0201-036
1 4 700-0202-002
1 5 700-0202-043
1 6 700-0002-360
1 7 700-0202-036
1 8 700-0001-022
1 9 700-0001-016
1 A 700-0001-024 Hast. C
1 B 700-0001-026 CS
1 C 700-0001-026 316SS
1 D 700-0001-074 CS
1 E 700-0001-074 316SS
1 F 700-0001-074 Hast. C
1 G 700-0001-344
1 H 700-0001-344 91-175

2 0 700-0209-002
2 1 700-209-002 91-112
2 2 700-0209-024
2 3 700-0002-023
2 4 700-0002-024 316SS
2 5 700-0002-024 Hast C
2 6 700-0002-027
2 7 700-0002-027 91-220
2 8 700-0002-028
2 9 700-0002-036
2 A 700-0002-037
2 B 700-0002-056
2 C 700-0002-057
2 D 700-0002-057 91-120
2 E 700-0002-224 316SS
2 F 700-0002-224 Hast C
2 G 700-0002-227
2 H 700-0002-321
2 I 700-0002-363

Sensing Element

3 0
3 1 700-0029-001
3 2 700-0029-002
3 3 700-0029-003
3 4 700-0029-004

3 5 700-0029-005
3 6 700-0029-021
3 7 700-0029-022
3 8 700-0029-023
3 9 700-0029-024
3 A 700-0029-025
3 B 700-0029-066
3 C 700-0029-102
3 D 700-0029-103
3 E 700-0029-104
3 F 700-0029-105
3 G 700-0029-106

4 0 700-0005-018
4 1 700-0005-018 91-13
4 2 700-0005-019
4 3 700-0005-028
4 4 700-0005-029
4 5 700-0005-035
4 6 700-0005-035 91-130
4 7 700-0005-048
4 8 700-0005-054
4 9 700-0005-085
4 A 700-0005-085 Hast C
4 B 700-0005-096
4 C 700-0005-348
4 D 700-0005-354
4 E 700-0205-078

5 0 700-0207-001
5 1 700-0207-002
5 2 700-0207-003
5 3 700-0207-004
5 5 700-0207-006
5 6 700-0201-025
5 7 700-0201-026
5 8 700-0201-027
5 9 700-0201-051
5 A 700-0201-052
5 B 700-0201-058

5 C 700-0201-059
5 D 700-0202-053
5 E 700-0202-054
5 F 700-0202-056

Sensing Element

6 0 700-0204-038
6 1 700-0204-002
6 2 700-0204-048
6 3 700-0204-022
6 4 700-0204-024
6 5 700-0204-049
6 A 700-0005-009
6 B 700-0005-036
6 C 700-0005-045
6 D 700-0005-095
6 E 700-0005-285
6 F 700-0005-385
6 G 700-0205-002
6 H 700-0205-005
6 I 700-0205-015
6 J 700-0205-018
6 K 700-0205-020
6 L 700-0205-075
6 M 700-0205-079

7 0 700-0008-122
7 1 700-0008-124 Hast C
7 2 700-0008-126 CS
7 3 700-0008-126 316SS
7 4 700-0008-134
7 5 700-0008-136
7 6 700-0008-144
7 7 700-0008-144 91-77
7 8 700-0008-144 91-299
7 9 700-0008-174 CS
7 A 700-0008-174 316SS
7 B 700-0008-174 Hast C
7 C 700-0008-222
7 D 700-0008-222 91-269
7 E 700-0008-242
7 F 700-0018-122
7 G 700-0018-124 Hast C
7 H 700-0018-126 CS
7 I 700-0018-126 316SS
7 J 700-0018-134
7 K 700-0018-136
7 L 700-0008-144
7 M 700-0018-144 91-77
7 N 700-0018-144 91-299
7 O 700-0018-174 CS
7 P 700-0018-174 316SS
7 Q 700-0018-174 Hast C
7 R 700-0018-222
7 S 700-0018-222 91-269

Introduction

Sensing Element

3

RCT 10, 11, 12, 13 Series

1.4 Sensing Element Model Numbering

System
Reference
Number

18 Water-like

1C Concentric water-

24 Low viscosity

26 Interface of liquids

2A Thick conducting

2C Conducting liquids

40 Agitated

42 Heavy-duty for

48 Long lengths of

4E Insulating liquids

*“X” is a fluorocarbon-type insulation

Typical
Application Type

conductive liquids

like insulating
liquids

conducting liquids

containing ketones
and esters

liquids

and interfaces

conducting liquids
and granulars

abrasive granulars

conducting liquids

and granulars

Sensing
Element
Model

700-1-22 TFE-covered

700-1-26 TFE-covered

700-2-24 TFE-covered

700-2-27 FEP-covered

700-2-37 “X”*-covered

700-2-57 “X”*-covered

700-5-18 “X”*-covered

700-5-19 Urethane-

700-5-54 PFA-covered

700-205-78 “X”* covered

Standard
Material of
Construction

rod

rod with carbon
steel concentric
shield

rod

rod

rod

rod

cable

covered
cable

cable

cable

OD and
Standard
Mounting

Rod 3/8" OD
3/4" NPT

Concentric Shield

1.66" OD
1 1/2" NPT

Rod
3/4" OD
3/4" NPT

Rod
.56" OD
3/4" NPT

Rod
.54" OD
3/4" NPT

Rod
.84" OD
1" NPT

Cable
5/16" OD
3/4" NPT

Cable
3/4" OD
2" NPT

Cable
.093" OD
3/4" NPT

Cable
5/16" OD
1" NPT

Temperature
Pressure Limits

100oF @ 1000 PSI
300oF @ 500 PSI

100oF @ 1000 PSI
300oF @ 500 PSI

100oF @ 1000 PSI
450oF @ 500 PSI

100oF @ 1000 PSI
300oF @ 500 PSI

100oF @ 1000 PSI
250oF @ 500 PSI

100oF @ 1000 PSI
250oF @ 500 PSI

100oF @ 1000 PSI
250oF @ 500 PSI

150oF @ 5 PSI

100oF @ 1000 PSI
300oF @ 500 PSI

250oF @ 5 PSI

1.5 Area Classifications

The standard electronic unit mounted in the durable

See Section 1.4 for detailed specications of sensing

The electronic unit and sensing element are connected by

housing (RCTXXX1, 2) is dual-rated and meets the
following conditions:

• Type NEMA 4X Waterproof / Corrosion Resistant

• IP 65

elements that are most often recommended with a
RCT Series system. Contact the factory or your local
representative if additional information is required.

a three-terminal coaxial cable. Drexelbrook cables are
available in See Section 7.2 for Specications:

• General Purpose:

• Triax:

• Composite: (rst 10 feet high temperature)

4

Installation

SECTION 2: INSTALLATION

2.1 Unpacking

Carefully remove the contents of the carton and check

each item against the packing list before destroying any
packing material. If there is any shortage or damage,
report it immediately to the factory.

2.2 Hazardous Location Installations

Installation in hazardous areas must comply with the

control drawings See Appendix A. Always install to

the NEC and/ or local requirements/ codes/ directives

as mandated by the authority having jurisdiction. The

cable ttings supplied are weather resistant only. Before

using Intrinsic Safety Barriers, read manufacturer's
instruction for barrier operation. The electronic unit is
rated T4 and may not be used with materials with an auto

ignition temperature of less than 135Cº. Substitution

of components may impair intrinsic safety. To prevent

ignition of ammable or combustible atmospheres,

disconnect power before servicing.

When installing the transmitter in an enclosure not

supplied by AMETEK Drexelbrook, the enclosure

must be certied for the area in which it is to be

installed.

2.3 Mounting the Electronic Unit

The RCT (409-T) Series system was designed for eld

mounting, but it should be mounted in a location as free
as possible from vibration, corrosive atmospheres, and
any possibility of mechanical damage. For convenience at
start-up, mount the instrument in a reasonably accessible
location. Ambient temperatures should be between -40oF

and 167oF (-40°C and 75°C).

See section 7.4 for customer supplied enclosure
requirements for 409 Series.

5

RCT 10, 11, 12, 13 Series

WRONG

CORRECT

CONDUIT

BREATHER

DRAIN

WRONG

CORRECT

* *

Allows Moisture Infiltration

Use only cable
supplied by
AMETEK
Drexelbrook

All conduit connections
are sealed.
Gaskets are in place.

Fill Pipe Ends with
silicone sealant.

*

2.3 Mounting the Electronic Unit (Continued)

Figure 2-1 shows the recommended conduit installation.

Figure 2-2 shows the dimensions when installing conduit

to the electronic unit.

Figure 2-1

Recommended Conduit

Connection

Figure 2-2

Mounting Dimensions

Inches (mm)

6

Installation

2.3 Mounting the Electronic Unit (Continued)

The mounting location for the sensing element is often

determined by whether there is a suitable location inside
a vessel. An external side arm or stilling well can be
considered.

The following sensing element mounting and installation
instructions should be followed so that the equipment will
operate properly and accurately:

A. In applications requiring an insulated sensing

element, use particular care during installation.
There is always the danger of puncturing the
insulation, especially with the thin-walled sensing
elements.

B. Sensing elements should be mounted in such a

manner that they are not in the direct stream of

a lling nozzle or chute. If this is not possible, a
deecting bafe should be installed between the
sensing element and the ll.

C. Do not take the sensing element apart or loosen the

packing glands. Follow instructions in Figure 2-3.

D. Avoid installing the sensing element with any of

the common mistakes shown in Figure 2-4.

E. If a stilling well is used, ensure that "vent" holes

are large enough to allow free passage of both

air and process material. Holes should be 5/8" or

larger, 120

o

apart, every 2-3 feet along the length of

the stilling well.

F. Sensing elements that are mounted in agitated

vessels usually require brackets and supports to
control the position of the sensing element during
agitation. See Figure 2-5.

G. For non-metallic vessels without Drexelbrook self-

grounding sensing elements, choose one of the
grounding recommendations shown in Figure 2-6.

7

RCT 10, 11, 12, 13 Series

2.3 Mounting the Electronic Unit (Continued)

Packing Gland
Assembly
Do Not Turn One
Relative to The
Other

Figure 2-3

Installing Sensing Element

LACK OF PROPER GROUND

(EARTH) CONNECTION

BETWEEN SENSOR MOUNTING

AND VESSEL WALL

Place Wrench Here
When Tightening
Condulet

Place Wrench
Here to Install or
Remove From
Vessel

Figure 2-4

Common Installation Mistakes

STILLING

WELL

LACKS

VENT

HOLES

PROBE

CONTACTS

SIDE OF STILLING

WELL

PROBE

MAY

FLEX

INSIDE

PIPE

SLUDGE

DAMAGE

MAY

OCCUR

HERE

SLUDGE

MAY CLOG

PIPE

AVOID

FILL

STREAM

NOZZLE DIAMETER
TOO SMALL
OR
LENGTH TOO LONG

DAMAGE

MAY

OCCUR

HERE

FILL LINE

WALL BUILD-UP
TOUCHES SENSOR

8

2.3 Mounting the Electronic Unit (Continued)

Installation

RECOMMENDED RIGID

SENSOR INSTALLATION

Figure 2-5

Installing Sensing Element

in Agitated Vessel

ROD

STYLE

SENSOR

INSULATED
SUPPORT
BUSHINGS
PART # 713-XX-X

CUSTOMER

SUPPLIED

SUPPORT
BRACKET

If the vessel is non metallic see grounding sketch below.
with factory supplied concentric shield or ground rod do not need
additional grounding.

Measure ground continuity from housing ground screw to metal
wall of vessel. A good ground will measure less than 5 ohms.

RECOMMENDED FLEXIBLE

SENSOR INSTALLATION

FLEXIBLE

CABLE TYPE

SENSOR

AVOID WEIGHTED

FLEXIBLE SENSORS IN

HEAVILY AGITATED

VESSELS

FLEXIBLE

BOTTOM
ANCHOR

PART# 727-XX-X

CUSTOMER

SUPPLIED
SUPPORT

sensors

Figure 2-6

Providing Ground

Reference*

*This is a sensing

element ground

reference and possibly

different from an

electrical power ground.

GROUND

CLAMP

METAL

SENSOR

D

RUN 14 AWG. WIRE FROM FABRICATED
GROUND TO GREEN SENSOR GROUND
SCREW

CLAMP

PLASTIC

A B

TANK

WEIGHT

F

PUMP

E

A

GROUND ROD
A ground rod can be fabricated out of any
metal compatible with the process. Use
material that is at least 3/8inch dia. such as
pipe, All-Thread, or tubing. The ground rod
must be parallel and relatively close to the
sensor.

B

GROUND WIRE
1/4 inch or larger dia. stainless steel rope
that is anchored or weighted can be used.

C

C

MOUNT SENSOR IN METAL PIPE
Mounting the level sensor inside a metal
pipe provides an excellent ground
reference.

D

METAL PIPING
Metal piping that connects to the tank
bottom can be used as a ground
reference. Use only if the process material

is greter than 1000 uMHOS/cm such as
acids and caustic.

E

SUBMERGED METAL STRUCTURE
Use any constantly submerged metal
object such as: pumps, agitators, or
thermowells.

greter than 1000 uMHOS/cm such as acids
and caustic.

F

METAL FLANGE
A submerged metal flange or orifice plate
can be used.

Use only if the process material is greater
thatn 1000 uMHOS/Cm. such as acids and
caustic.

Use only if the process material is

9

RCT 10, 11, 12, 13 Series

2.4 Wiring the Electronic Unit

Center Wire (Blue)

GROUND PROBEPAD SHD

Shield Wire (Red)

Two Terminal

Sensing Element

RCT Series Wiring Connections Integral Mounting

Three Terminal Sensing Element

Three Terminal
Sensing Element

Figure 2-7

GROUND PROBEPAD SHD

GROUND PROBEPAD SHD

YEAR OF MANUFACTURE

GND

SERIAL NO.
MODEL NO.

YEAR OF MANUFACTURE

GND

SERIAL NO.
MODEL NO.

V -

+ To Signal

- To Signal

V +M -

V -

V +M -

Center Wire

(Blue)

Shield Wire (Red)

Two Terminal Sensing Element

Center Wire

(Blue)

Shield Wire (Red)

to be cut by field installer

RCT Series Wiring Connections, Remote Mounting

+ To Signal

- To Signal

1. All devices must be wired in series. Voltage driven
devices require a series voltage dropping resistor.

2. Signal Terminals + & - can operate with minimum

of 12.0 VDC with 20mA owing.

3. If the eld wiring is to be in hazardous areas, then

suitable safety barriers are required between the power

supply and the eld to provide for intrinsically safe

wiring.

4. Clipped Shield Wire must NOT touch housing!

Figure 2-8

10

2.4 Wiring the Electronic Unit (Continued)

Integral units are pre-wired at the factory. Figure 2-7
shows the wiring of the integral unit.

For remote units, the signal connections are made to the
four-terminal block on the front of the chassis. Due to
the low power consumption of the instrument, the wiring

need only be light gauge (e.g. 20 AWG). Twisted shielded

pair cables are recommended for lengths over 200 feet.

The cable from the sensing element is connected to the

ve-terminal strip on the back side of the instrument

chassis. The cable connections are probe (prb) or center
wire (cw), ground (gnd), and shield (shd). See Figure 2-8
for wiring connections of the remote unit.

Only coaxial cables supplied by Drexelbrook should be
used to connect the transmitter to the sensing element.
Use of other cables can result in unstable performance.

2.5 Wiring the Sensing Element

CAUTION !

Before using Intrinsic Safety Barriers, read
manufacturer's instruction for barrier operation.

The 409-T has a built-in current limiter which holds the
signal current to a maximum of 28 mA.

The cable connections to the sensing element are shown
in Figure 2-8

Installation

• Do not connect the cable to the sensing element

until after the sensing element has been installed
in the vessel and the condulet housing has been
secured.

• If the sensing element does not have a shield

connection, (the most common condition for a 2­terminal sensing element) be sure to clip and /or

tape the shield wire at the sensing element
end of the cable only. See Figure 2-8.

Only coaxial cables supplied by Drexelbrook should be

used to connect the transmitter to the sensing element.
Use of other cables can result in unstable performance.

11

RCT 10, 11, 12, 13 Series

2.6 Spark (Static Electricity) Protection

Spark Protection for Integral Sensing Elements

If spark protection is supplied for an integral sensing

element, use the following instructions for installing the
spark protection.

A. Attach the mounting link on the spark protector to

the sensing element center connection screw.

B. Connect the green wire from the spark protector to

the housing/chassis mounting screw.

C. Connect the center wire connector (Blue) of the

spark protector to the "probe" connection on the
transmitter.

D. Connect the shield connector (Red) of the spark

protector to the shield (sh) connector on the
transmitter.

Cote-Shield
Wire (Red)

Center
Wire
(Blue)

Figure 2-9

Spark Protection for Integral

Sensing Elements

Ground (Green)

Spark Protector

377-1-24

Fastened Under Screw to

Housing

Spark Protection for Remote Sensing Elements

If spark protection is supplied for a remote sensing

element, use the following instructions for installing the
spark protection.

A. Attach the mounting link on the spark protector to

the sensing element center connection screw.

B. Connect the green wire from the spark protector to

the ground screw.

C. Feed the coax cable into the condulet.

12

Installation

2.6 Spark (Static Electricity) Protection (Continued)

D. Connect the coax cable center wire (cw) to the spark

protector and the ground wire (gnd) to the ground
screw as shown in Figure 2-10.

E. Connect the shield wire to the Cote-Shield terminal

(sh).*

* For sensing elements that do not have shield

connections, clip the shield wire as shown in

Figure 2-8.

Make sure the transmitter has a ground attached

either on sensing element side or loop side of the
unit.

Unless the assembly is attached to a metallic vessel,

chassis of transmitter is not grounded.

Figure 2-10

Spark Protection for Remote

Sensing Elements

2.7 Surge Voltage (Lightning) Protection

Optional surge protection is sometimes supplied with

transmitters that are expected to be exposed to surge
voltages or surges due to lightning near the two-wire loop.

A Drexelbrook Model 377-4-12 Surge Voltage Protection

affords a great deal of protection to the transmitter
but is not absolute in its protection against a very
close lightning strike. Refer to Figure 2-11 to properly

connect the Surge Voltage Protection. Be sure that the

transmitter housing is well connected to a good ground.

13

RCT 10, 11, 12, 13 Series

2.7 Surge Voltage (Lightning) Protection (Continued)

GND

SERIAL NO.
MODEL NO.

YEAR OF MANUFACTURE

V +M -

V -

Transient Surge
Protector
DE Part No.
377-4-18

Figure 2-11

Surge Voltage Protection

+ To Signal
(12 to 30 VDC)

- To Loop

2.8 RFI (Radio Frequency Interference) Filters

When installing the RCT Series transmitter, follow these

recommendations to avoid problems with Radio

Frequency Interference (RFI).

• Choose a location to mount the electronic unit at

least 6 feet (2M) from a walkway where personnel

using walkie talkies may pass.

• If the vessel is non-metallic, select, if possible,
a shielded (concentric) sensor. If unsure about
suitability, contact the Drexelbrook Applications
department for a recommendation.

• For remotely-mounted electronic units connect
the sensor to the electronic unit by placing the
coaxial cable in grounded metal conduit. Integrally
mounted electronic unit sensor connections are
already shielded.

• Use Twisted Shielded Pair wiring for all loop
wiring connections. Loop connection wiring should
also be in grounded metallic conduit.

• Where possible, use of cast aluminum housings
without windowed openings for the electronic unit
is recommended. If local close-coupled indicators

are used, install a loop lter between the indicator

and the electronic unit.

Ground the electronic unit and housing with a minimum

of 14 gauge wire to a good earth ground. Make sure that
conduits entering and leaving the housing have a good
electrical ground connection to the housing

14

Installation

2.7 RFI Filters (Continued)

If the recommendations listed are followed, it is usually

not necessary to add RFI ltering to protect against
signal strengths of 10 Volts/ Meter or less. This degree of
protection is usually sufcient to protect against walkie

talkies that are used 3 feet (1M) or more from a typical

electronic unit. If greater protection is required, or lters
have already been provided, install RFI lters as shown

in Figure 2-12.

CE Mark Certication:

3-Terminal Coaxial Cable - Systems with remote mounted

electronics require the use of a Probe RFI lter (only)

if the sensing element is connected with 3-terminal

coaxial cable, installed in accordance with gure 2-14, to
maintain CE Mark certication.

Triaxial Cable - Systems with remote mounted electronics

that connect to the sensing element via a triaxial cable

do not need a Probe RFI lter to maintain CE Mark
certication.

GROUND PROBEPAD SHD

YEAR OF MANUFACTURE

SHLD

GND

CW

Figure 2-12

Radio Frequency Interference (RFI) Filters

GND

SERIAL NO.
MODEL NO.

V +M -

V -

+ To Signal

- To Signal

+

POS

GND

-

NEG

15

RCT 10, 11, 12, 13 Series

2.9 Electrostatic Filters

In applications such as desalters or treaters and other

coalescers with electrostatic grids, it is customary for

Drexelbrook to supply a special lter on the sensing
element. The purpose of the lter is to remove voltage

that may be imposed in the sensor from the high voltage

grids. Some earlier applications have the lter located at

the transmitter instead of the sensing element; either is
acceptable.

Connect the electrostatic lter Drexelbrook Part Number
385-0028-004 as shown in Figure 2-13.

Typical Mounting For Typical Sensing Element

Figure 2-13

Electrostatic Filter

(385-0028-004)

2.10 Digital Integral Meter

An optional digital integral meter (DIM) (401-44-3) can be

used with the RCT Series electronic unit for local digital

loop indication. When purchased with the RCT Series

instrument, a housing with viewport is supplied. The
meter display is visible through the viewport. If the meter

is added as a retrot to an existing installation, a new
housing dome with viewport (260-2-222) is required and
supplied as part of the retrot package.

To install the meter:

• Remove the "perforated knockouts" from the top
label of the transmitter to expose two threaded
holes and ribbon cable socket

• plug the mini ribbon cable into the socket

• secure meter to top of electronic unit with screws

16

Installation

2.10 Digital Integral Meter (Continued)

Integral meter can be rotated 90° to allow for proper

viewing orientation:

• remove hold-down screws

• remove black cover screws

• move cover screws to original hold-down screw

location

• remount meter in new orientation

The meter is not inserted into the 4-20 mA loop. It

receives power and data directly from the Drexelbrook
smart transmitter via attached mini ribbon cable. See

Figure 2-14.

If the Ribbon Cable is attached while the transmitter is

Powered Up, the transmitter may have to be restarted

before the DIM will display correctly.

The meter can be congured using the Drexelbrook PC

software, the Model 275 Calibrator, or from the DIM

itself.

Figure 2-14

Digital Meter in Housing with

Viewport

17

SECTION 3

Conguration & Calibration

SECTION 3: CONFIGURATION AND CALIBRATION WITH

DREXELBROOK PC SOFTWARE

This section instructs the user how to use the Drexelbrook

401-700-20/40 Series PC calibrator software to
congure and calibrate the RCT Series(RF Admittance)

Transmitter.

3.1 General Description

The 401-700-20/40 software package allows the use of

any Windows® 9X/NT/2000/XP-based personal, laptop,

or notebook computer to calibrate the HART Protocol
transmitter.

The PC software can be used in place of the Rosemount

268 or 275 handheld calibrators used for multi-Process
Variable (PV) transmitters.

3.2 Model Number

4 0 1 - 0 7 0 0 - 0 2 X / 4 X
2X= 1 PC Software Package includes:

RS232 Modem Assembly 401-0700-004 (Figure 3.1).

2X=2 PC Software Package includes:

Contents in 401-0700-021, HART® 6.0 (DOS version) on a
3½" Floppy Disk, and HARTWin™ version 2.1 or greater

on a CD-ROM.

4X=1 PC Software Package includes:

USB Modem Assembly 401-0700-007(Figure 3.1a).

4X=2 PC Software Package includes:

Contents in 401-0700-41, Utilities and Drivers on a CD-

ROM, and HARTWin™ version 2.3 or greater on a CD-

ROM.

4 0 1 - 0 7 0 0 - 0 0 6

HART® 6.0 (DOS version) on a 3½" Floppy Disk

4 0 1 - 0 7 0 0 - 0 3 1

HARTWin™ version 2.X on a CD-ROM.

3.3 System Requirements

PC Requirements

Windows® 95, 98, ME, 2000, XP.

The USB modem is not compatible with Windows® 95, 98

First Edition, or NT. It is recommended that the software

be installed on a hard drive with 20 megabytes or more of
space available.

Input to Modem

RS232 or USB Port, from one of the COM serial ports
(COM1, COM2, etc.). The PC provides operating power

Output (to Transmitter being Calibrated)

for the modem but not for the transmitter.

4-20 mA in HART® Protocol.

19

RCT 10, 11, 12, 13 Series

3.4 Installing The RS232 Modem

Refer to Figure 3-1 for a connection diagram and use

the following procedure to install the hardware that is

necessary to run the PC software.

A. Connect the RS232 Drexelbrook Modem

401-700-004 to one of the COM serial ports (COM1,
COM2, etc.) of the computer.

B. Connect the Modem's 4-20 loop connectors to the

transmitter loop.

C. Turn on the computer.

HART COMPATIBLE

401-0700-004

Figure 3-1

RS232 Modem Assembly & Loop Connection

20

Conguration & Calibration

3.4.1 Installing The USB Modem

Refer to Figure 3-1a for a connection diagram and use

the following procedure to install the hardware that is

necessary to run the PC software.

A. Turn on the computer

B. Install Modem Software:

It is highly recommended the USB drivers be installed

BEFORE you plug in the modem.

Install the USB Drivers by inserting the Modem

Installation Disk into CD Drive of the computer.

If program does not "Auto-Run", select "D:\setup"

(where D is the letter representing the CD Drive)

Be Sure to Select the USB interface in the setup

prompt.

Follow any "On-Screen" Instructions.

C. Connect the Drexelbrook Modem 401-700-007 to a

USB port on the computer. With the USB drivers
already installed, the computer will detect the modem

and assign a COM PORT number.

D. Connect the Modem's 4-20 loop connectors to the

transmitter loop.

HART COMPATIBLE

Notes:

1. Modem will operate from 32º F to
122º F (0º C to 50º C). It can be
stored from -40º F to +185º F (-40º C
to +85º C). 0% to 95% relative
humidity - non condensing.

2. Servic Department 1-800-527-6297
or 1-215-674-1234

401-0700-007

US B

Figure 3-1a

USB Modem Assembly & Loop Connection

21

RCT 10, 11, 12, 13 Series

3.5 Install the Windows Version HARTWin 2.1 Software on Hard Drive

Installation is quite simple.

A. Place the 401-700-031 CD into the CD drive

(usually drive D:).

B. If program does not "Auto-Run", select "D:\setup"

(where D is the letter representing the CD Drive).

C. Follow "On-Screen" instructions in Setup to create

program le.

D. Once loaded, double click "HartWin" icon and the

program should run under its own window.

Figure 3-2

Selecting COM ports during

software installation

E. Select communication port [Com 1, Com 2, etc.]

and then click “OK.” See Figure 3-2

F. If you are not sure which communication port you

are using (such as when rst using a USB modem),
select “Search Ports,” then OK. The software

automatically will seek out the correct one.
In either case the software begins to communicate
with the HART protocol transmitter and returns
with a view (below) containing “name plate data,”

Tag ID and all default or existing conguration

information. This is the same as if you clicked on
the Read Transmitter function button.

G. The next view, shown in Figure 3-3, appears

automatically, displaying current transmitter
database for calibration set-up for your selected

Tag ID. The Scratch Pad will automatically show

the last message (last user, last calibration, etc.) up
to 32 characters. If this is a new transmitter, the

Tag ID is user-dened. Serial number, transmitter

software version, range, etc. is automatically
entered from the “name plate data” embedded in
the transmitter:

3.6 Description of Function Keys

Figure 3-3 shows a PC calibration software menu screen.

Read Transmitter [F3 on keyboard]

The following paragraphs describe the function buttons.

The data elds are described in Section 3.7-Conguration.

Reads all pertinent data from the transmitter and
displays it on the screen. The Read function also updates
the real time window. Keep in mind that it takes several
seconds to load the information from the transmitter.

When the load is complete, the screen shows the database
parameters, except any user-dened strapping table

information. This command is also used when connecting
to another transmitter.

22

Conguration & Calibration

3.6 Description of Function Keys (Continued)

Write to Transmitter [F5 on keyboard]

Sends new or edited conguration data to the transmitter.
Data elds that have been edited but not sent to the

transmitter are displayed in red.

Real Time View [F4 on keyboard]

Displays the real time values of level, capacity, distance,
temperature, loop current, percentage, and status.

Point Calibration [F6 on keyboard]

Calibrates the HART® protocol transmitter using Point

calibration. See Section 3.8 Calibration. Enter the low
point and high point of level for an accurate calibration.

D/A Trim

Allows a eld reference meter to be connected to the

transmitter for adjusting transmitter output current.
See Section 3.10.

Strapping Table

Displays the values of the input to level and output to
volume in percent in a 21-point table. Allows points to be
changed to accommodate irregularly shaped vessels.
See Section 3.11.

Congure Meter

Congures the optional Digital Integral Meter (440-44-3)

used for local indication. See Section 3.12.

True Level Calibration (grayed out)

This button is inactive for the RCT Series Transmitter.
It is for the extra features that come with the True Level
model transmitter.

Figure 3-3

PC Software Menu Screen

automatically communicates

all "name plate data" from

transmitter

23

RCT 10, 11, 12, 13 Series

3.7 Configuration

Refer to Figure 3-3 PC Software Menu Screen.

Conguration involves downloading information to

the HART protocol transmitter that is specic to the

Figure 3-4

Congure Transmitter from

Calibration requires that application information and

Menu screen

application and vessel that is being measured.

two points of level and/or capacitance be supplied to the

transmitter from the calibration software.

A. Begin conguration by using Tag ID (8 characters)

to identify the unit or vessel. Use the Scratchpad
(32 characters) to record the date of calibration or

other similar notes. Press Tab or Enter on your

keyboard.

3.7.1 Level Configuration

B. Select Level or Vessel in the Analog Loop

Assign selection box. Press Tab or Enter on your

keyboard.

• Level conguration sets the output to follow
the level of the material being measured.

• Vessel conguration sets the output to follow
the strapped volume or weight in the vessel.
For example, gallons in a horizontal vessel.

C. Edit Damping Time from 0-90 seconds, if desired.

D. Click on Write to Transmitter.

E. Move to Level Conguration section of menu.

A. Select Level Units. The default is feet. Choose the

units that correspond to the level measurement.

Figure 3-5

Level Conguration from

Menu screen

B. Edit the Maximum Level to agree with the actual

tank height (not the length of the sensing element).

C. Click on Write to Transmitter and move to the
Vessel Conguration section of the menu.

24

3.7.2 Vessel Configuration

Figure 3-6

Vessel Conguration from

Menu screen

Conguration & Calibration

A. Select Vessel Units. The default is gallons. Press

Enter and choose the units that correspond to
the vessel measurement. The units include both

weight and volume outputs. Press Tab or Enter on

your key board to continue.

B. Edit the Maximum Capacity of the vessel. Enter

the corresponding value of weight or volume equal
to the Maximum Level. Enter 100 for percent
if the weight or volume units are not known or

needed. Press Tab or Enter on your keyboard to

continue.

C. Select Vessel Type. Available options include:

• Vertical Tank (Vertical)

• Horizontal cylinder with at ends (Hrzcy/Fl)

• Horizontal cylinder with dished ends (HrzCy/Ds)

• Horizontal cylinder with hemispherical ends

(Hrzcy/Hm)

• Spherical (Sphere)

• The default is Vertical. Press Enter and choose

the type of vessel.

D. Click on Write to Transmitter.

E. Move on to Range Values (URV & LRV) section of

menu.

3.7.3 Lower and Upper Range Values (LRV and URV)

Enter the LRV and URV to set the current (mA) window of

the vessel.

Figure 3-7

LRV & URV Conguration

from Menu screen

A. Edit LRV (Lower Range Value) to display the

output you want to see when the transmitter
generates 4 mA current. The default LRV is 0 feet.

B. Edit URV (Upper Range Value) to display the

output you want to see when the transmitter
generates 20 mA current. The default URV is 100
feet for the RCT Series.

C. Click on Write to Transmitter. Conguration is

now complete.

25

RCT 10, 11, 12, 13 Series

3.8 Calibration

There are two methods for calibrating the transmitter

using the PC software:

Point Calibration (menu button selection):

Uses the two known level points in the vessel for

calibration. The further apart the two points are for
the calibration the better the accuracy of the overall
measurement. Always initiate the point calibration
process by selecting the Point Calibration button

on the PC menu screen and following the prompts

in the pop-up window.

Level Calibration (lower right of window):

See Figure 3-3

Uses capacitance values obtained from the

AMETEK Drexelbrook Service department (or a
previous calibration or identical application) for
the zero and span calibration data. Call 1-800-

527-6297. Please provide your DE purchase order

number, transmitter serial number, vessel and
application data to the Service Engineer. Level
calibration is done using the Level Calibration

data elds on the PC menu screen.

It is permissible or sometimes even recommended that

May use both Point &
Level Calibrations

both methods be used in order to establish a calibration

standard. For example, if the vessel was already lled
before the calibration was attempted and it is difcult or

impossible to lower the level to establish the second point,
it would be best to use a calculated zero capacitance for

the low point and actual level for the high point. While

this wouldn’t be as accurate as two known level points,
it will be reasonably accurate until an actual low point
calibration can be established. The Service department
will help in calculating high or low capacitance values.

Because calibration involves determining two known

points of capacitance, a span (or range) jumper provides
an adjustment for the change in capacitance required to
produce full scale current.

• The Range Span Jumper is located on the back of
the transmitter chassis. See Fig. 3-9.

• Each Range Span position on the RCT
Series advances the range in inches or feet to

approximately ve times the previous setting.

See Table 3-1

Figure 3-9

Range Span Jumpers

26

Conguration & Calibration

RCT Series Span Range Setting Chart

Sensing Element Length Vs. Span Position Number / Maximum pf

Jumper Position = 1 2 3 4 5 6
Maximum pF = 20 100 450 2000 10000 40000

System # Maximum Sensing Element Length In Feet

Conducting Liquids:

RCTX3XXXXX18 N/A N/A 5.4 20 N/A N/A
RCTX3XXXXX74 N/A N/A 9.2 40 200 920
RCTX3XXXXX45 N/A N/A 1.2 5.3 20 N/A
RCTX3XXXXX70 N/A N/A 1.4 6.25 31 140
RCTX3XXXXX40 N/A N/A 7.8 20 N/A N/A
RCTX3XXXXX47 N/A N/A N/A N/A 4.1 14
RCTX3XXXXX22 N/A N/A 5.4 20 N/A N/A
RCTX3XXXXX65 N/A N/A 5.4 20 N/A N/A
RCTX3XXXXX72 N/A N/A N/A 4.2 21 95

Interface Application:

RCTX2XXXXX45 N/A N/A 1.2 5.3 20 N/A
RCTX2XXXXX43 N/A N/A 1.0 4.8 20 N/A
RCTX2XXXXX47 N/A N/A N/A N/A 4.0 14

Insulating K = 1.5-5:

RCTX2XXXXX22 N/A 2.7 12.5 20 N/A N/A
RCTX2XXXXX18 N/A 8.3 20 N/A N/A N/A
RCTX2XXXXX74 N/A 8.0 37.5 166 N/A N/A
RCTX2XXXXX45 N/A 3.6 16.2 20 N/A N/A
RCTX2XXXXX70 N/A 3.8 17.1 76 N/A N/A
RCTX2XXXXX40 N/A 6.0 20 N/A N/A N/A
RCTX2XXXXX43 N/A 5.0 20 N/A N/A N/A
RCTX2XXXXX47 N/A 5.0 14 N/A N/A N/A

Table 3-1

Span Range Position for a number of common Sensing Elements

3.8.1 Point Calibration

The Point to Point method of calibration is the most

accurate way to calibrate the transmitter with two level
points. The high or low level must be known and should
be held steady for accurate calibration. They may be any
two points at more than 10% apart, and need not be the

Figure 3-10

Point Calibration from Menu

The Point Calibration pop-up window is accessed by

screen

4mA or 20 mA points.

clicking on the menu "button" Point Calibration. Either a
high point or a low point can be entered rst.

A. Type in current value as the high point of the two

point calibration.

B. Click on Hi Point or press Enter (or Tab) on the

27

RCT 10, 11, 12, 13 Series

3.8.1 Point Calibration (Continued)

keyboard. High point calibration is now complete.

C. Move level in vessel a minimum of 10%.
D. Type in that value for Low Point of the two point

calibration.

E. Click on Low Point or press Enter (or Tab) on

keyboard. Low point calibration is now complete.

3.8.2 Level Calibration

Level calibration uses zero and span capacitance values

as the calibration data . These values can be obtained
from the AMETEK Drexelbrook Service department
(or from a previous calibration or identical application).

Figure 3-11

Level Calibration area of

Menu screen

Please be prepared when you call (1-800-527-6297) with

the purchase order number and the serial number of the
transmitter.

A. Go to Level Calibration area of the menu.
B. Enter Lower Level value. Press Tab or Enter.
C. Enter Lower Capacitance value. Press Tab or

Enter.

D. Enter Upper Level value. Press Tab or Enter.
E. Enter Upper Capacitance value. Press Tab or

Enter.

F. Click on Write to Transmitter.

3.8.3 Application Example

Example of an application using the PC software.

(Application Data)

• Vertical Tank

• No Damping

• Caustic or Acid Material in Tank Sensing Element:
700-5-54, Model Code: 74 (See Section 1.3)

• Span Range Switch factory set to 4

• Maximum Capacity of Vessel = 1200 gallons

• Maximum Size of Vessel = 20 feet

• 4 mA (LRV) = 0 gallons

• 20 mA (URV) = 1185 gallons [19.5 feet]

• Point Cal was done using two known level points:

• Lo Cal = 3 feet [selected level]

• Hi Cal = 16 feet [current level]

28

3.8.3 Application Example (Continued)

Conguration & Calibration

Figure 3-12

Application Example Diagram

Maximum Level 20 feet

URV = 1185 gallons

20 mA

*LRV may either reference the bottom of the vessel,
bottom of the sensor, or an elevated point on the sensor.

[19.5 feet]

High Point
16 feet
Hi Cal

Low Point
3 feet
Lo Cal

LRV Alternate*

[0 feet]

LRV 4 mA Point

Maximum Capacity 1200 gallons

Figure 3-13

PC Software Menu Screen

View of Application Example

29

RCT 10, 11, 12, 13 Series

3.9 PC Status Messages

Status Message: SPAN TOO SMALL

Difference between URV and LRV is less than 10% of
range.

Figure 3-13a

PC Software Menu Screen

View of Main Menu

Example: For 0 to 10 foot calibration points: LRV=3.0

feet and URV=3.8 feet. When calibration points are too

close together, overall accuracy of calibration is adversely
affected.
Action: The calibration points should be farther apart.

Calibration Status Message: RAISE SPAN JUMPER

Based on LRV, URV, and capacitance calibration data,
the estimated 100% capacitance exceeds selected range by
greater than 10%.
Example: A unit in Range 4 (2000 pF) projects

maximum capacitance equal to 2500 pF. Error message is

displayed.
Action: Raise Range jumper (Section 3.8, Table 3-1) to

position 5 for this example.

Calibration Status Message: LOWER SPAN JUMPER

Based on LRV, URV, and capacitance calibration data,
the estimated 100% capacitance value is less than 10% of
the maximum pF for the range below the selected range.
Example: A unit in Range Span 4 (2000 pF) projects
maximum capacitance equal to 400 pF.
Action: Lower Range jumper (Section 3.8, Table 3-1) to

position 3 (Max. pF of 450 pF) for this example.

Real-time Status Message: UNDERRANGE

Present capacitance/milliampere value is less than -5% of

range.
Examples: Center wire connection is broken. Sensing
element is not operating. An elevated Zero is used and
actual level is below 4mA point. Vessel has lost its RF
ground reference.
Action: Check connections and ground. Recalibrate if
this level is in operational range of process.

Real-time Status Message: OVERRANGE

Present capacitance/ milliamp value over 105% of system

span.
Examples: Actual level exceeds span point on sensing
element. Cut in sensing element insulation or shorted
coax.
Action: Check sensing element and coax. Re-calibrate if
this level is in operational range of process.

30

Conguration & Calibration

3.10 Set D/A Trim

D/A Trim is NOT a calibration! This is a pre

calibrated alignment to precision factory settings
and is rarely in need of change. The procedure is
intended only as a slight "meter" adjustment to a
known external reference.

The Digital to Analog (D/A) Trim adjusts the transmitter

mA (current) output. Since the smart transmitter
performs a digital to analog conversion, there may be a
discrepancy in the 4-20 mA output loop as measured with
a reliable external milliampere meter.

For example: perhaps after calibration you observe that

the tank is empty and a hand-held mA meter reads only

3.94 mA, while the Real Time View in the PC Menu shows

4.00 mA. By adjusting the D/A trim, you may digitally

manipulate the output current to equal 4.00. You may

Figure 3-14

Setting D/A Trim Menu Screen

To make these adjustments, click on D/A Trim on the PC

"Pop-Ups"

also wish to adjust the high end to 20.00 mA.

software Menu Screen and follow the pop-up window
instructions:

3.11 Strapping Table

The strapping table is a 2-point to 21-point table

used by the RCT Series to cause the output current to

follow a specied relationship to the level. There are

certain strapping tables that are already built in to
the transmitter software. These are: Linear (vertical

tank); Horizontal Tank with at ends; Horizontal Tank

with dished ends; Horizontal Tank with hemispherical

ends; and Spherical Tank. These predened tables are

automatically created by selections made with Vessel

Conguration assignments during Conguration

procedure in Section 3.7.2, and viewed by clicking the
Strapping Table "button" on the Main menu.

If the output-to-level relationship is not dened by one

of these tables, you may create a table in the Strapping
Table program. To create a non-linear relationship, you
will need at least 3 points and may use as many as 21

points. A 21-point table will dene the relationship with

more accuracy. A common example for a simple table
would be a Cone Bottom Vertical tank which would
require 3 points—the bottom, straight-side break point,

and the top. On the other hand, an open channel ow
application could benet from using all 21 available

points.

31

RCT 10, 11, 12, 13 Series

3.11 Strapping Table (Continued)

A. Plan your table by lling out table 3-2. You may

use the rst column which lists every 5% between
0 and 100%, or you may ll in your own values in

column 2.

B. Fill out column 3 with output values corresponding

to those listed in column 1 or 2.

C. "Click" on Strapping Table button to access table:

D. Enter the values you calculated into the screen

view presented.

E. "Click" on Write Strapping Table.

F. "Click" on Exit when completed.

Point Number Level Standard Level Optional Output Value

Preset Values Values In Selected
% Level % Level Units

1. 0

2. 5

3. 10

4. 15

5. 20

6. 25

Table 3-2

RCT Series

Strapping Table

7. 30

8. 35

9. 40

10. 45

11. 50

12. 55

13. 60

14. 65

15. 70

16. 75

17. 80

18. 85

19. 90

20. 95

21. 100

Figure 3-15

Menu Screen Transforms to

Strapping Table

By clicking on Last Read
Values, this view may also be

used to review existing strapping
tables previously entered.

32

Conguration & Calibration

3.12 Digital Integral Meter Configuration

The optional Digital Integral Meter (DIM)(401-44-3) is

used for local display. It can be viewed through a glass
viewport in the transmitter housing cover. See Figure

2-16

The meter can be congured to read any engineering

units, e.g. 4-20 mA, gallons, inches, feet, etc. Status
messages are also displayed on the meter. Refer to

Figure 3-16

Congure Meter Pop-up from

To congure the meter, "Click" on Congure Meter in

Menu Screen; values relate to

LRV & URV

The meter is congured by:

Factory default settings are:
Minimum Value = 0.00
Maximum Value = 100.00

Section 2.9 for meter installation.

menu screen for the pop-up;

• setting the minimum value equal to the value to be

displayed at the LRV and,

• setting the maximum value equal to the value to be

displayed at the URV.

To set the meter display range equal to calibration

range:

Minimum Value = LRV
Maximum Value = URV

To set the meter display range equal to percent of

level:

Minimum Value = 0
Maximum Value = 100

When a smart transmitter is powered down or the ribbon

cable is disconnected, there is a 1 minute delay before the
DIM begins to display upon return of power.

If the display becomes distorted:

• Remove power from the smart transmitter,

• Wait one minute,

• Reapply power to restart the meter.

3.13 Save/Print Entries

In addition to your own convenience, many regulatory

agencies are requiring a record of the values being used
during certain processes. All of the values developed

in this conguration and calibration procedure may

be saved to be reloaded into another (or replacement)
transmitter. All of the values may likewise be printed out

as hard copy, including the Serial Number, transmitter
software version, Tag ID, Scratch Pad, Level and Vessel

Figure 3-17

Print Pop-up from Menu

Congurations, Level Calibration, all of the Real Time

View numbers, and all of the Strapping Table entries.

33

RCT 10, 11, 12, 13 Series

3.13 Save/Print Entries (Continued)

Pop-up screens come from selections in the FILE pull

down at the top left of the PC menu Screen.

Copies are saved in both .slt le and .txt les.

The .slt le will download into a transmitter through the

OPEN command. The text le may be printed out, or

reformatted.

PRINT command provides a pre-formatted hard copy.

3.14 Validation

More and more industries are requiring formal validation

of their processes for their customers as well as for
various government regulatory agencies. The RCT Series
Transmitter has this capability built in.

3.14.1 Validation Design Concept

Smart RF Continuous Level systems derive their input

information from a sensing element that provides
a capacitance value to the RF Transmitter. The RF
Transmitter output signal is derived from this capacitance
value, based on the capacitance span of the transmitter
during initial calibration.

If the RF Transmitter's minimum and maximum

capacitance values are known, and remain unchanged,

the effects of a specic capacitance value within this

range can be accurately predicted. If a known capacitance

(which can be NIST-traceable) within this range produces

repeatable results and the minimum and maximum
values remain unchanged the RF Level system can be
assumed to be operating correctly.

With a known capacitance input, the output signal

would not be repeatable if the calibration information is
altered, or if the RF transmitter was not operating within

specications. Repeatable calibration information can be
maintained through the use of the Save/Print capability

built into the RCT Series Transmitter.

3.14.2 Validation Procedures

Figure 3-18

Capacitance on Menu Screen

A. Drexelbrook Laptop software must be used.

Connect the laptop to the smart level transmitter
signal loop to be validated and start the software
according to the instructions provided at the
beginning of this Section 3.

B. At the Main conguration screen observe the

Level Calibration, Lower Capacitance, and
Upper Capacitance values and the Lower

34

3.14.2 Validation Procedures (Continued)

Level and Upper Level values. Select an NPO
Capacitor (which can be NIST traceable, if desired

or required) that falls somewhere mid-range.
Example: See Fig. 3-18. If Lower Capacitance

is 50pF and Upper Capacitance is 2000pF, that

corresponds to a Lower Level and Upper Level of 0-

10 feet. Select an NPO Capacitor of approximately
1000pF. [Drexelbrook 401-6-8 Capacitor Substitute
Box may also be used; it is traceable to NIST].

C. Connect the NPO capacitor selected from the last

step to the Probe and Ground connections at
the transmitter (with coaxial cable from sensing
element disconnected).

D. Select Real Time View on the PC software Menu

Screen (F4 on your keyboard) See Fig. 3-19.
The display should show the Capacitance as the

value of the NPO Capacitor (within the capacitors

tolerance), and the LEVEL should display close to
the mid-range of the Lower and Upper Level from
the Level Calibration eld. The Loop Current

Figure 3-19

Real Time View Pop-up from

Menu Screen

* Every capacitor
manufactured will generate a
slightly different capacitance value

within its specied tolerance. By

marking the capacitor and using
only this capacitor for testing and
validating the AMETEK Drexelbrook
RCT Series Transmitter, the system
should produce repeatable results

within transmitter specications.

and the Percentage will also reect the values
that are generated by the NPO Capacitor. Add to

the scratch pad of the Menu Screen the value of

the NPO capacitor that you used. If desired, this
information can be printed out for le or record

purposes. Mark or Tag this capacitor* to correspond

to this specic transmitter. Put the capacitor in

a safe location for use in subsequent testing and
validation.

E. By placing the same exact capacitor* on the RF

transmitter's Probe and Ground terminals and
observing the signal output generated by this

capacitor, it can be veried that the transmitter

is operating properly and that the calibration
information is the same as during the initial set up.

Conguration & Calibration

35

RCT 10, 11, 12, 13 Series

3.14.3 Validation Results

See Fig. 3-20.
If the information that is shown (or printed) matches the

initial readings within system specications, then it can
be veried that the calibration and conguration is as
originally set. It can also be veried that the transmitter’s

response falls within acceptable tolerances. The system

has passed validation tests. Using the Save/Print feature

built into the transmitter allows the ability to comply
with the record-keeping needed for many processes by
regulatory agencies.

AMETEK Drexelbrook

205 Keith Valley Road

Horsham, PA 19044

Telephone: [phone]

FAX: [phone]

Service: 800-527-6297

Tag-ID: LT 101 Serial Number: 1172
Scratch PAD: 1000 pf NPO validation capacitor Software Version: 3.1
Analog Loop Assign: LEVEL Range Position: 4
Damping Time: 0 sec. Type: 30

Level Configuration Vessel Configuration Level Calibration

Level Units: feet Vessel Units: gallons Lower Level: 0 ft
Maximum Level: 10.00 ft Maximum Capacity: 1200.00 gal Upper Level: 10 ft
Level Type: Standard Vessel Type: Vertical Lower Capacitance: 50 pf

LRV (4mA): 0.00 ft
URV (20 mA): 10.00ft

Upper Capacitance: 2000 pf

Real Time View

Level: 10 ft
Vessel: 600 gal
Capacitance: 1000 pF
Loop Current: 12.00 mA
Percentage: 50 %
Status: OK

Strapping Table

Vessel Type: Vertical
Number of Points: 21

Level Volume

In Percent Out Percent

0.00 0.00 o.oo 0.00

1.00 5.00 60.00 5.00

2.00 10.00 120.00 10.00

3.00 15.00 180.00 15.00

4.00 20.00 240.00 20.00

5.00 25.00 300.00 25.00

6.00 30.00 360.00 30.00

7.00 35.00 420.00 35.00

8.00 40.00 480.00 40.00

9.00 45.00 540.00 45.00

10.00 50.00 600.00 50.00

11.00 55.00 660.00 55.00

12.00 60.00 720.00 60.00

13.00 65.00 780.00 65.00

14.00 70.00 840.00 70.00

15.00 75.00 900.00 75.00

16.00 80.00 960.00 80.00

17.00 85.00 1020.00 85.00

18.00 90.00 1080.00 90.00

19.00 95.00 1140.00 95.00

20.00 100.00 1200.00 100.00

Typical Printout of Transmitter Data

Figure 3-20

36

Conguration & Calibration

3.15 Calibration & Configuration via 401-44-3 Display/Keypad

EnterUp/Down Enter

Enter

View Lower Cap

View Lower Level

Enter

View Upper Level

Enter

Enter

View Upper Cap

Enter

Enter

Enter

View Min Value

Enter

Min Value

0 - 99900

Edit

Enter

Enter

Up/Down

Enter

View Max Value

Enter

Up/Down

Max Value

Up/Down

Enter Enter

Edit 0 - 99900

Enter

Enter

Up/Down

Lower Level

Enter

Edit 0 - 99900

Enter

Enter

Up/Down

Lower Level

Enter

Enter

Up/Down

View %Out Scale

Enter

Up/Down

Up/Down

Enter

Sc.PO (Scale Percent Out) See?

Enter

Enter

Edit 1.0 or 100.0

Enter

Edit

Up/Down

Enter

Edit

Up/Down

Enter

Up/Down

Up/Down

C.CAL (Cap Cal) See?

Up/Down

Enter

Enter

View Damping

Enter

Enter

dELy (Damping Time) See?

Up/Down

Up/Down

Enter

Enter

Edit 0 - 90

Enter

Edit

Up/Down

Enter

Enter

S.S.HH

Enter

Enter

Sr.Hr

Up/Down

CAP (Capacitance) View Capacitance

(Software Rev/Hardware Rev)

Enter

Enter

Yes

4.0?

20.0?

Value =

Value =

Enter

Enter

Enter

I.AdJ (DAC Trims)

Yes

No

Edit 19.0-21.0

Up/Down

Enter

Enter

No

Edit 3.5 - 4.5

Return

Up/Down

Lower Cap

Edit 0 - 99900

Enter

Lower Cap

Enter

View Type

Enter

Enter

tyPE (Type) See?

Up/Down Enter

Upper Level

Up/Down

Edit 0 - 99900

Enter

Up/Down Enter

Upper Level

Up/Down

Enter

Edit 00 or 30

Enter

Edit

Up/Down

Up/Down

Up/Down

Up/Down

Upper Cap

Enter Enter

Edit 0 - 99900

Enter

Up/Down

Upper Cap

Enter

View Vessel Type

Enter

Enter

StrP (Vessel Type) See?

Return

Enter

Return

Edit

Up/Down

Up/Down

Enter

Sphere

Standard

HCyl - Flat

HCyl - Dished

HCyl - Hemisphere

Enter

Edit

Up/Down

Escape Menu

Up/Down

Enter

Device

Restarts

Enter

Enter

Up/Down

L.FAC (Load Defaults) Sure?

rEt (Return to Main Menu)

Min Value

Enter

Up/Down

Max Value

Up/Down

Return

Enter

Up/Down

Edit

Up/Down Up/Down

Enter

Up/Down

CFg.d (Configure Display) See?

View LRV

Enter

Enter

Lrng (Lower Range Value) See?

Edit 0 - 99900

Enter

Edit

Up/Down

Up/Down

View URV

Edit 0 - 99900

Enter

Enter

Edit

Up/Down

Up/Down

Enter

Up/Down

Urng (Upper Range Value) See?

Up/Down

View Low Point

Edit 0 - 99900

Enter

Enter

Cal?

Up/Down

Up/Down

Enter

Up/Down

Up/Down

LOPt (Low Point Cal) See?

View High Point

Enter

Enter

HIPt (High Point Cal) See?

Edit 0 - 99900

Enter

Cal?

Up/Down

Up/Down

Enter

donE (Leave Menu)

Enter

Exit Main Menu

Up/Down

Up/Down

diAg (Diagnostic Menu)

37

SECTION 4

Conguration & Calibration

SECTION 4: CONFIGURATION AND CALIBRATION WITH

MODEL 275 WITH DREXELBROOK DEVICE
DESCRIPTION

4.1 Drexelbrook Device Description

The Drexelbrook Device Description for the Rosemount

275 handheld calibrator makes it easy to calibrate a

RCT Series. The device description software is stored in
the memory module (located in the back portion) of the
calibrator.

To determine if your Model 275 Handheld calibrator

has the Drexelbrook Device Description loaded, do the
following steps:

• Turn on the calibrator.

• From the top screen, push 1. Ofine.

• Push 1. New Conguration

• A Table of Contents is shown that lists all the

Manufacturers in alphabetical order.

• Drexelbrook is third on the list in the current

release.

• Select the Manufacturer (Drexelbrook) and a list
of supported devices is displayed (RCT Series).

• Return to top screen, by backing up from arrow

keys.

The Memory Module with the device description can

be purchased as a direct replacement either from

Drexelbrook (401-700-25) or from the local Fisher-

Rosemount Service Center.

Appendix A describes conguration of the RCT Series

transmitter with a Rosemount 275 handheld calibrator

without a device description.

39

RCT 10, 11, 12, 13 Series

Typical Transmitter Loop

Nominal

24Vdc Supply

17-30 Vdc

ABC7 DEF8

GHI9

ABC7

DEF8

GHI9

ABC7

DEF8 GHI9

ABC7

DEF8 GHI9

ABC7

DEF8

GHI9

ABC7

DEF8

GHI9

ABC7

DEF8

GHI9

–

+

Resistance added if
necessary to make total loop
resistance at least 250 ohms
during the communication
process.

2-wire twisted

shielded pair

(recommended)

4.23

Optional loop

powered indicator

e.g. DLM4000 series

Calibrator or PC Modem may be
connected anywhere on the
transmitter side of the 250 ohm
resistance. Voltage at the transmitter
terminals must be at least 12 volts
with 20 mA of loop current.

Other possible loop devices
such as a setpoint controller.

Optional
Safety
Barrier
HART®
Compatible

4.2 Start-up

After the RCT Series transmitter is installed and loop

power is applied, per Section 2, do the following:

1. Connect the Rosemount Model 275 as shown in

Figure 4-1.

2. Turn on the Calibrator and look for the ONLINE
screen to appear. ONLINE means that the 275

Calibrator has recognized the RCT Series and is

ready for Conguration and Calibration.

3. You must start the process by doing the

Conguration rst-- followed by Calibration. There
are also instructions for conguring the Strapping
Tables and for doing a D/A Trim to make the loop

output agree with a calibration standard for loop
current.

Figure 4-1

Typical Transmitter Loop

40

4.3 Configuration

UNIV. III: <TAG>

LRV

NNNNN

UNIV. III: <TAG>

MAX LEVEL

NNNNN

UNIV. III: <TAG>

LEVEL UNITS

AAAAA

UNIV. III: <TAG>

LEVEL TYPE

AAAAA

<select from list>

XXXXX

XXXXX

Conguration & Calibration

UNIV. III: <TAG>

URV

NNNNN

XXXXX

UNIV. III: <TAG>

DAMP TIME

NNNNNs

XXXXX

UNIV. III: <TAG>

CURRENT ANALOG

AAAAA

UNIV. III: <TAG>

LOOP ASSIGN IS

SELECT ANALOG

LOOP ASSIGN

1. LEVEL

2. VESSEL

3. EXIT

UNIV. III: <TAG>

VESSEL UNITS

AAAAA

<select from list>

UNIV. III: <TAG>

VESSEL TYPE

AAAAA

<select from list>

UNIV. III: <TAG>

MAX CAPACITY

NNNNNu

XXXXX

Required only if weight

or volume readings are

desired.

UNIV. III: <TAG>

VESSEL CONFIG

1. VESSEL UNITS AAA

2. VESSEL TYPE AAA

3. MAX CAPACITY NNNu

4. DAMP TIME NNNs

5. LRV NNNu

6. URV NNNu

7. CHG ANLG LOOP ASGN

UNIV. III: <TAG>

ENTER MINIMUM METER VALUE

NNNNNNNNNN

XXX XXXX XXX

ENTER METER SPAN VALUE

NNNNNNNNNN

XXX XXXX XXX

UNIV. III: <TAG>

UNIV. III: <TAG>

LEVEL CONFIG

1. LEVEL TYPE AAA

2. LEVEL UNITS AAA

3. MAX LEVEL NNNu

4. LRV NNNu

5. URV NNNu

6. DAMP TIME NNNs

7. RANGE POSITION N

8. CHG ANLG LOOP ASGN

Required only if weight

or volume readings are

desired.

UNIV. III: <TAG>

ONLINE

1. LEVEL NNNu

2. VESSEL NNNu

3. CAP NNNpF

4. REF. CAP. NNNpF

5. AO NNNmA

6. % OF RNG NNN%

UNIV. III: <TAG>

CONFIGURATION

1. LEVEL CONFIG

2. VESSEL CONFIG

3. METER CONFIG

4. STRAPPING TABLE

5. CALIBRATION

UNIV. III: <TAG>

BASIC SETUP

1. TAG

2. LEVEL UNITS

3. VESSEL UNITS

4. DEVICE INFORMATION

5. VESSEL TYPE

6. DAMP TIME

UNIV. III: <TAG>

DETAILED SETUP

1. HART OUTPUT

2. SIGNAL CONDITION

3. CALIBRATION

DEVICE INFORMATION

UNIV. III: <TAG>

REVIEW

1. DISTRIBUTOR

2. MODEL

MANUFACTURER

TE

6. DESCRIPTOR

3. SERIAL #

4. TAG

5. DA

LEVEL UNITS

VESSEL UNITS

VESSEL TYPE

LRU

URV

7. SCRATCHPAD

8. DEV ID

9. REVISION #'S

DAMP TIME

RANGE POSITION

ANLG LOOP

POLL ADDR

UNIV. III: <TAG>

HART OUTPUT

TYPE

DISTRIBUTOR

MODEL

1. POLL ADDR

2. NUM REQ PREAMS

UNIV. III: <TAG>

SERIAL #

TAG

DATE

DESCRIPTOR

SCRATCH PAD

DEV ID

SIGNAL CONDITION

1. CHG ANLG LOOP ASGN

2. LRV NNNu

3. URV NNNu

4. DAMP TIME NNNs

5. % OF RNG NNN%

UNIVERSAL REV

FLD DEV REV

SOFTWARE REV

HARDWARE REV

Configuration

Start

UNIV. III: <TAG>

1. PROCESS VARIABLES

UNIV. III: <TAG>

ONLINE

1. DEVICE SETUP

2. LEVEL NNNu

2. CONFIGURATION MENU

3. BASIC SETUP

4. DETAILED SETUP

5. REVIEW

3. VESSEL NNNu

4. CAP NNNpF

5. REF. CAP. NNNpF

6. AO NNNmA

7. % OF RNG NNN%

8. LRV NNNu

9. URV NNNu

41

UNIV. III: <TAG>

ANLG LOOP AAA

STATUS

STATUS

1. UNIV III STATUS

RANGE POSITION N

UNIV. III: <TAG>

UNIV. III STATUS

SPAN TOO SMALL AAAAA

DECREMENT SPAN AAAAA

INCREMENT SPAN AAAAA

OVERRANGE AAAAA

UNDERRANGE AAAAA

LEGEND

AAA - ALPHABETICAL DISPLAY

NNN - NUMERIC DISPLAY

XXX - FIELD MAY BE EDITTED

u - UNITS

pF - PICOFARADS

MUST PERFORM THIS FUNCTION

mA - MILLIAMPS

s - SECONDS

% - PERCENT

OPTIONAL FUNCTION

OTHER FUNCTION

RCT 10, 11, 12, 13 Series

4.3 Configuration (Continued)

Following is the keystroke sequence for Conguration

using the Model 275 Calibrator.

Select Device Setup.
Select Conguration Menu.
Select Level Cong.

Select Level Type—edit Level Type—return to Level

Cong screen.

Select Level Units—edit Level Units—return to Level

Cong screen.

Select Max Level—edit Max Level—return to Level

Cong screen.

Select LRV—edit LRV—return to Level Cong screen.

Select URV—edit URV—return to Level Cong screen.

Select Damp Time—edit Damp Time—return to Level

Cong screen.

Select Chg Anlg Loop Assign—edit Current Loop

Assign. If current loop assign is Level and is correct, go to

next screen and select Exit. Proceed to 4.3 Calibration.

If Vessel conguration is to be selected, choose Vessel, go

back to Cong screen and select Vessel Cong. Edit all
values as done for Level Cong. Select Exit and proceed

to 4.4 Calibration.

4.4 Calibration

There are two methods of calibrating the RCT Series

transmitter: Point Calibration or Capacitance
Calibration.

Point calibration uses the actual level in your vessel for

calibration. The further apart the two points are for the
calibration, then the better the accuracy of the overall
measurement.

Capacitance calibration uses values obtained from the

Drexelbrook Service department (or a previous calibration
or identical application) for the zero and span calibration

data. Call 1-800-527-6297 for assistance. Please provide

the purchase order number, transmitter serial number
and application information to the Service Engineer.

It is permissible or sometimes even recommended that

both methods be used in order to establish a calibration

standard. For example, if the vessel was already lled
before the calibration was attempted and it is difcult or

impossible to lower the level to establish the second point,

42

Conguration & Calibration

4.4 Calibration (Continued)

it would be best to use a calculated zero capacitance for

the low point and actual level for the high point. While

this wouldn’t be as accurate as two known level points,
it will be reasonably accurate until an actual low point
can be established. The Service department will help in
calculating high or low capacitance values.

4.4.1 Point Calibration

Following is the keystroke sequence for Point Calibration

using the Model 275 Calibrator.

Select Device Setup.
Select Conguration Menu.
Select Calibration.

Select Point Cal—select either Low Point Cal or High

Point Cal depending on whether you plan to raise or
lower the level for your second point—edit value to agree

with the present actual level and return to Point Cal

screen.

Exit—Calibration is complete.

To D/A Trim

UNIV.III: <Tag>
POINT CAL

1. LOW POINT CAL

2. HIGH POINT CAL

UNIV.III: <Tag>

From configuration

screen

CALIBRATION

1. STRAPPING TABLE

2. D/A TRIM

3. POINT CAL

4. CAPACITANCE CAL

5. TRUE LEVEL

6. CHNG ANLG LOOP ASGN

UNIV.III: <Tag>
CAPACITANCE CAL

1. LOWER LEV NNNu

2. LOWER CAP NNNpF

3. UPPER LEV NNNu

4. UPPER CAP NNNpF

UNIV.III: <Tag>
ENTER LOW POINT CAL
NNNu
XXXu

UNIV.III: <Tag>
ENTER HI POINT CAL
NNNu
XXXu

UNIV.III: <Tag>
LOWER LEV
NNNu
XXXu

UNIV.III: <Tag>
LOWER CAP
NNNpF
XXXpF

UNIV.III: <Tag>
UPPER LEV
NNNu
XXXu

43

UNIV.III: <Tag>
UPPER CAP
NNNpF
XXXpF

RCT 10, 11, 12, 13 Series

4.4.2 Capacitance Calibration

Capacitance calibration uses zero and span capacitance

values as the calibration data. These values can be
obtained from the Drexelbrook Service department (or a
previous calibration or identical application). Call 1-800-

527-6297 for assistance. Please provide your DE purchase

order number, transmitter serial number, and application
information to the Service Engineer.

Following is the keystroke sequence for Capacitance

Calibration using the Model 275 Calibrator.

Select Device Setup.
Select Conguration Menu.
Select Calibration.

Select Capacitance Cal—select either Lower Level or

Upper Level depending on whether the next value will
be higher or lower for the second point—edit capacitance
value and level as a pair—return to Capacitance Cal
screen.

Exit—Calibration is complete.

4.4.3 D/A Trim

Refer to the D/A Trim diagram for the D/A Trim sequence

and Strapping Table conguration.

44

D/A Trim Diagram

UNIV.III: <Tag>

POINT NUMBER: X

UNIV.III: <Tag>

POINT NUMBER: X

UNIV.III: <Tag>

ENTER POINT

ENTER OUTPUT

CAPACITY VALUE:

XXX

XXX

ENTER INPUT

LEVEL VALUE:

XXX

XXX

UNIV.III: <Tag>

NUMBERXX

UNIV.III: <Tag>

POINT NUMBER: X

ENTER OUTPUT

CAPACITY VALUE:

XXX

XXX

POINT NUMBER X

ENTER INPUT

LEVEL VALUE:

XXX

XXX

UNIV.III: <Tag>

POINT NUMBER: X

ENTER OUTPUT AS A

PERCENT OF MAXIMUM

CAPACITY:

XXX

XXX

UNIV.III: <Tag>

POINT NUMBER: X

ENTER INPUT AS A

UNIV.III: <Tag>

% OF MAXIMUM LEVEL:

XXX

XXX

Conguration & Calibration

UNIV.III: <Tag>

RETURNING FLD

DEV TO ORIGINAL

OUTPUT

UNIV.III: <Tag>

FLD DEV OUTPUT

20mA EQUAL TO

REFERENCE

METER?

1. YES 2. NO

POINT NUMBER: X

ENTER OUTPUT AS A

% OF MAXIMUM

CAPACITY:

XXX

XXX

UNIV.III: <Tag>

ENTER METER

VALUE

XXXX

ENTER POINT

NUMBERXX

UNIV.III: <Tag>

UNIV.III: <Tag>

SELECT EDIT

METHOD

1. EDIT 1 POINT

2. EDIT ALL POINTS

3. EXIT

UNIV.III: <Tag>

UNIV.III: <Tag>

ENTER NUMBER OF

POINTS FOR TABLEXX

UNIV.III: <Tag

D/A Trim is NOT a calibration! This is a pre-calibrated alignment to precision factory

UNIV.III: <Tag>

POINT NUMBER: X

ENTER INTPUT AS A

% OF MAXIMUM

LEVEL:

XXX

XXX

SELECT EDIT

METHOD

1. EDIT 1 POINT

2. EDIT ALL

POINTS

SELECT EDIT METHOD

!.EDIT ACTUAL POINTS

2.EDIT POINTS IN %

3. EXIT

UNIV.III: <Tag>

TABLE EDIT/REVIEW:

1.CHANGE # POINTS

2. EDIT POINTS

3. REVIEW POINTS

4. SEND POINTS

UNIV.III: <Tag>

POINT #X:

5. EXIT

INPUT: XXX (UNIT)

% INPUT: XXX%

OUTPUT: XXX

(UNITS)

% OUTPUT: XXX%

UNIV.III: <Tag>

POINT NUMBER X HAS

BEEN MODIFIED. WAIT

AS POINT IS WRITTEN

TO TRANSMITTER.

UNIV.III: <Tag>

SETTING VESSEL TYPE

TO USER-DEFINED

D/A Trim

UNIV.III: <Tag>

SETTING FLD DEV

OUTPUT TO 20mA

UNIV.III: <Tag>

FLD DEV OUTPUT 4mA

EQUAL TO REFERENCE

METER?

1. YES 2. NO

UNIV.III: <Tag>

ENTER METER

VALUE

XXXX

UNIV.III: <Tag>

SETTING FLD DEV

OUTOUT TO 4mA

settings and is rarely in need of change. The procedure is intended only as a slight "meter"

adjustment to a known external reference.

Strapping Table

From configuration

screen

UNIV.III: <Tag>

45

CALIBRATION

1. STRAPPING TABLE

2. D/A TRIM

3. POINT CAL

4. CAPACITANCE CAL

5. TRUE LEVEL

6. CHNG ANLG LOOP

ASGN

UNIV.III: <Tag>

CONNECT

REFERENCE

METER

RCT 10, 11, 12, 13 Series

4.4.4 Strapping Table

The strapping table is a 2-point to 21-point table used by

the RCT Series to cause output current to follow specied

relationship to level. There are certain strapping tables
that are already built in to the transmitter software.
These are: Linear (vertical tank); Horizontal Tank with

at ends; Horizontal Tank with dished ends; Horizontal

Tank with hemispherical ends; and Spherical Tank.

These predened tables are automatically created by
selections made with Vessel Cong assignment during
Conguration procedure in Section 4.3.

If output-to-level relationship is not dened by one of

these tables, you may create a table in Strapping Table
program. To create a non-linear relationship, you will
need at least 3 points and may use as many as 21 points.

A 21-point table will dene relationship to about a 0.1%

accuracy. Common example for a simple table would
be Cone Bottom Vertical tank which would require 3
points—bottom, straight-side break point, and top. Open

channel ow application, however, could benet from

using all 21 available points.

• Plan your table by lling out form below. You may

use rst column which lists every 5% between 0
and 100%, or you may ll in your own values in

column 2.

• Fill out column 3 with output values corresponding

to those listed in column 1 or 2.

Point Number Level Standard Level Optional Output Value

Preset Values Values In Selected
% Level % Level Units

1. 0

2. 5

3. 10

4. 15

5. 20

6. 25

7. 30

8. 35

9. 40

10. 45

11. 50

12. 55

13. 60

14. 65

15. 70

16. 75

17. 80

18. 85

19. 90

20. 95

21. 100

46

Conguration & Calibration

SECTION 5: Configuration & Calibration of RCT Series with

Model 275 Communicator without a Device
Description

The Model 275 Communicator can be used to enter and

download conguration/ calibration values to the RCT

Series transmitter.

5.1 Range/Span Control

Denitions:

• LRV - Lower Range Value of control loop.

• LSL - Lower Sensor Limit corresponding to

minimum level point.

• PV - Process Variable; level value from transmitter.

• SV - Secondary Variable; could be volume or

weight-based on PV.

• URV - Upper Range Value of control loop.

• USL - Upper Sensor Limit corresponding to

maximum level point.

The rst step in conguration is to identify the span

range position of the instrument. There is a jumper on
the back of the electronics chassis: Range Span See Fig.
3-9. The Range Span provides continuous adjustment
of the change in capacitance required to produce full
scale current. Each Range Span position advances the

range in inches or feet to approximately ve times the

previous setting. Table A-1 gives the range span position
for a number of common sensing elements and range of
measurement.

Probe Length Vs. Span Position Number / Maximum Pf

Table 5-1

Range/Span

Setting Chart

Jumper Position: 1 2 3 4 5 6

Max Pf 20 100 450 2000 10000 40000

System Maximum Probe Length In Feet

Conducting Liquids

RCTX3XXXXX18 N/A N/A 5.4 20 N/A N/A
RCTX3XXXXX74 N/A N/A 9.2 40 200 920
RCTX3XXXXX45 N/A N/A 1.2 5.3 20 N/A
RCTX3XXXXX70 N/A N/A 1.4 6.25 31 140
RCTX3XXXXX40 N/A N/A 7.8 20 N/A N/A
RCTX3XXXXX47 N/A N/A N/A N/A 4.1 14
RCTX3XXXXX22 N/A N/A 5.4 20 N/A N/A
RCTX3XXXXX65 N/A N/A 5.4 20 N/A N/A
RCTX3XXXXX72 N/A N/A N/A 4.2 21 95

Interface Application

RCTX2XXXXX45 N/A N/A 1.2 5.3 20 N/A
RCTX2XXXXX43 N/A N/A 1.0 4.8 20 N/A
RCTX2XXXXX47 N/A N/A N/A N/A 4.0 14

Insulating K=1.5-5

RCTX2XXXXX22 N/A 2.7 12.5 20 N/A N/A
RCTX2XXXXX18 N/A 8.3 20 N/A N/A N/A
RCTX2XXXXX74 N/A 8.0 37.5 16 N/A N/A
RCTX2XXXXX45 N/A 3.6 16.2 20 N/A N/A
RCTX2XXXXX70 N/A 3.8 17.1 76 N/A N/A
RCTX2XXXXX40 N/A 6.0 20 N/A N/A N/A
RCTX2XXXXX43 N/A 5.0 20 N/A N/A N/A
RCTX2XXXXX47 N/A 5.0 14 N/A N/A N/A

47

RCT 10, 11, 12, 13 Series

5.2 Basic Rules & Conventions of HART Configuration Software
(Model 275)

To become familiar with the operation of the Model 275

Communicator, it is best to review the Operating Manual
that comes with the unit. This paragraph reviews some

of the basic characteristics of the Model 275 conguration/

calibration software. The following pages show the
decision tree menus.

Arrow Keys: Use the arrow keys to move through the

software menus. An arrow at the beginning of the menu
item indicates the next progressive step.

Alphanumeric Keys: Use the alphanumeric keys to

enter data. Data elds are characterized by a blinking

cursor.

Function Keys: The function keys, F1 through F4,

indicate the specic actions that are available to complete

the software function. The action words that appear
above each key change as you move through the menus
and select the software task.

Heart Symbol: When a appears in the upper right

corner of the screen, communication is occurring between
the communicator and the transmitter.

5.3 Tag ID

To name or identify the transmitter, use the 8-character

Tag ID. The Tag ID is entered or changed in the following
menus.

a) select the ONLINE MAIN menu

b) ⇒1 DEVICE SETUP ⇒ ⇓ ⇓
c) ⇒3 BASIC SETUP ⇒
d) ⇒1 TAG ⇒
e) change (use alphanumeric keys) Tag ID

f) F4 ENTER
g) F2 SEND

h) F4 OK
i) F4 OK
or:

a) select the ONLINE MAIN menu

b) ⇒1 DEVICE SETUP⇒ ⇓ ⇓
c) ⇒3 BASIC SETUP⇒ ⇓ ⇓ ⇓
d) ⇒4 DEVICE INFORMATION⇒ ⇓ ⇓ ⇓
e) ⇒4 TAG⇒
f) change (use alphanumeric keys) Tag ID

g) F4 ENTER
h) F2 SEND

i) F4 OK
j) F4 OK
k) F3 HOME

48

5.4 Set Up Procedures

Conguration & Calibration

49

RCT 10, 11, 12, 13 Series

5.4 Set Up Procedures (Continued)

50

5.4 Set Up Procedures (Continued)

Conguration & Calibration

51

RCT 10, 11, 12, 13 Series

5.5 Reading Input and Output

Within the Model 275 conguration, there are several

different menus that allow you to view the Process
Variable (PV) and the Analog Output (AO1).

View PV Input:

a) select the ONLINE MAIN menu ⇓

b) ⇒1 DEVICE SETUP ⇒ ⇓ ⇓ ⇓
c) ⇒4 DETAILED SETUP ⇒
d) ⇒1 SENSORS ⇒
e) ⇒1 PV ⇒

f) view Process Variable

g) EXIT F4
h) HOME F3

or:

a) select the ONLINE MAIN menu ⇓
b) ⇒2 PV ⇒
c) view Process Variable

d) F4 EXIT
e) ⇒2 PV ⇓
f) ⇒3 PV AO
g) view Analog Output
h) F4 EXIT

or:

a) select the ONLINE MAIN menu

b) ⇒1 DEVICE SETUP
c) ⇒1 PROCESS VARIABLES
d) ⇒1 SNSR ⇒

e) view Process Varible

f) F4 EXIT
g) ⇒1 SNSR ⇓
h) ⇒2 AI % RANGE ⇒

i) view PV%

j) F4 EXIT
k) ⇒2 AI % RANGE ⇓
l) ⇒3 AO1 ⇒
m) view Analog Output
n) EXIT F4
o) HOME F3

52

Conguration & Calibration

5.6 Calibration Using Actual Tank Level

When calibrating using a handheld without a device

description, tank level must be moved. Calibration is a
two-step process. A low point calibration and high point
calibration are required. Calibration points do not have
to be an empty tank or a full tank. (example: low point
performed at 20% and high point performed at 80 % will
work). You also may perform high point cal before low
point cal.

From main screen go to:

1 Device setup
2 Diag/Service
3 Calibration
4 Enter values

You now have four choices:

1 PV LRV
2 PV URV
3 PV USL
4 PV LSL

Choose PV LRV if your vessel currently has a low level.
Choose PV URV if your vessel currently has a high level.

Edit the displayed value to equal the actual tank level,

then:

ENTER
SEND

OK
OK

⇐

1 Apply values
OK

You now have two choices:

1 4mA
2 20 mA

Choose 20mA if performing a high point calibration.
Choose 4mA if performing a low point calibration.

Continue: OK

ENTER

3 EXIT
OK
HOME

Observe on the home screen that your PV URV or PV

This completes the rst calibration point of the two-step

LRV value has been changed by the calibration procedure.
You must manually change these values back. Re-enter

your desired PV URV and PV LRV at this time.

process. For the second point, change the level in your
tank and repeat the entire above procedure.

53

RCT 10, 11, 12, 13 Series

5.7 Bench Calibration (if needed)

When performing a bench calibration tank level will be

simulated using a Drexelbrook 401-6-8 C-box. Calibration

is a two-step process. A low point calibration and high
point calibration are required

Hook up a Drexelbrook c-Box in place of the sensing

element. Dial up the capacitance value that corresponds

to an empty tank. For specic information on how to wire

and use the C-box calibrator see the instructions that
came with the calibrator.

From main screen go to:

1 Device setup

2 Diag/Service
3 Calibration
4 Enter values

You now have four choices

1 PV LRV
2 PV URV
3 PV USL
4 PV LSL

Choose PV LRV if performing a low point calibration.
Choose PV URV if performing a high point calibration.

Edit the displayed value to equal the actual tank

level,then:

ENTER
SEND

OK
OK

⇐

1 Apply values
OK

You now have two choices:

1 4mA
2 20mA

Choose 20mA if performing a high point calibration.
Choose 4 mA if performing a low point calibration.

Continue: OK

ENTER

3 EXIT
OK
HOME

Observe on the home screen that your PV URV or PV

This completes the rst calibration point of the two-step

LRV value has been changed by the calibration procedure.
You must manually change these values back. Re-enter

your desired PV URV and PV LRV at this time.

process. Change the value on the C-box to correspond to

the Picofarads of a full tank and repeat the entire above

procedure for a high point calibration.

54

Conguration & Calibration

5.7.1 Bench Calibration Information Sheet

Company

City State
Customer P.O. Number Item DE# Tag No.

Filled out by: Date Phone Fax

Material being Measured - Fill out any known information

Name of Material: Level Measurement Interface Measurement
Dielectric Constant: (K)
Conductivity: (g)
Other:

Installation Details

NPT Thread Mount
Flange Mount- if flange mount

B = inches

E =
A = inches
H = inches
D = inches
H = inches
IL = inches

Vessel Shape Vertical Cylinder

Horizontal Cylinder
Other

B

E

Unless specified otherwise, calibration values of
zero and span capacitances will be based on 4-20
mA being over the entire range of 'H'. If other

A

H

URV

IL

values are desired specify LRV and URV in
inches.

LRV = inches

LRV

URV = inches

D

Calculations by Drexelbrook

LRV ________ Calculated Zero Capacitance ________ pF
URV ________ Calculated Span Capacitance ________ pF
Calculated by: ____________________ Date _________ Phone [phone]

Fax [phone]

Appx-A-smh.pmd
Page 0 of 1 Created 07/31/1997 by ELS
Revised 08/07/2002 12:21 PM

55

RCT 10, 11, 12, 13 Series

5.8 Point Calibration

Equipment Required:

• RCT Series HART® Smart Transmitter

• Model 275 HART® Calibrator

• 24V Power source

• Approximately 250 ohm total loop resistance

• Two known process levels applied to the probe

This procedure uses an example of a point calibration for

full-scale (20mA) = 35 ft. and zero (4mA) = 1.5 ft.

5.8.1 Fine Tuning Calibration

When a known level is available that is closer to an

The procedure SET UP ZERO
AND FULL SCALE LIMITS
must be performed to set up the

vessel zero and full-scale limits

ENTER THE UPPER CALIBRATION POINT and/ or

sometime prior to performing

ENTER THE LOWER CALIBRATION POINT with the

a point calibration. This
informs the RCT Series of the
tank level limits and only

The order of execution between the upper and lower

needs to be performed once for
a given installation.

endpoint than a previous calibration point, it may be used
as a new calibration point to increase accuracy. This is
done in the following steps:

new known level applied.

calibration procedures does not matter. They can be done
at different times.

5.8.2 Selecting Engineering Units

The examples in this procedure use the default units of

feet. For other units, use the following procedure:

A. Connect the handheld communicator to the 4-20

mA loop per Figure 4-1.

B. Power the loop and proceed with following steps.

Do See Function Comments

1/0 Online (Generic) Power On
1 Device Setup Select Device Setup
3 Basic Setup Select Basic Setup
4 PV Snsr unit Select PV Units

⇑ and ⇓ Available Units

Use the arrow keys to scroll
through the available units and
press [ENTER] when the desired
unit is displayed.

[ENTER] Basic Setup Select highlighted unit

Home Online (Generic) Desired units are now selected.

56

Conguration & Calibration

5.9 Handheld Calibrator Error Messages

Error Message: Applied Process Too High

The applied process at 100% exceeds the capacitance

range setting by at least 5% of span.

Example: URV = 10 ft., Applied Process = 12 ft. will

generate this error.

Action: The Span Select Jumper Must Be Raised.
This allows the process output at 100% to be within the

range of the span range capacitance.

Error Message: Span Too Small

The difference between the URV and LRV is less than

10% of the range.

Example: For 0 to 10 ft. calibration points: LRV = 3.0

ft., URV = 3.8 ft. will generate this error.

Action: The Calibration Points Should Be Farther Apart.
When the calibration points are too close together, the

overall accuracy of the calibration is adversely affected.

Error Message: Upper Range Value Too High

The process capacitance at 100% exceeds the present

capacitance range jumper setting.

Example: For 0 to 10 ft. calibration: span select jumper

= 100 pF, point cal. LRV = 0 ft. @ 10 pF, URV = 7 ft. @ 90
pF generates this error because the process would be 124
pF @ 10 ft.

Action: The Span Select Jumper Must Be Raised.
This allows the process output at 100% to be within the

range of the span range capacitance.

NOTE: Respond to the prompt which is displayed immediately

after the error message that reads “Restore Device Value?”
with <N>.

Error Message: Upper Range Value Too Low

The Full scale projected from the entered URV and LRV

is less than 5% of the present capacitance range jumper

setting.

Example: For 0 to 50 ft. calibration: span select jumper

= 1000 pF, LRV = 0 ft. @ 10 pF, URV = 40 ft. @ 80 pF
generates this error.

Action: The Span Select Jumper Must Be Lowered.

This allows the URV-LRV span to be greater than 5% of

NOTE: Respond to the prompt which is displayed immediately

the capacitance range jumper setting.

after the error message that reads “Restore Device Value?”
with <N>.

57

SECTION 6

Troubleshooting

SECTION 6: TROUBLESHOOTING

Problem/Symptom Tests in order of probability Reference Section(s) Comments

Rosemount 268 or 275
Calibrator gives error
message that no device was
found

Rosemount 275 Calibrator
gives error message
that device could not be
identified

Can’t communicate
with transmitter using
Drexelbrook PC Software

0 mA output all the time
(no measurable output
current at any time)

More than 20 mA output
all the time (output current
always exceeds 20 mA)

Output drifts (output
accuracy varies slowly over
time…e.g. hours or days)

Output erratic - (output
jumps around noticeably
in terms of seconds or
minutes)

Output intermittent (output
jumps quickly usually
between >0mA and some
"on scale" value

Inaccurate readings (Level
readings are incorrect
compared to actual known
level)

Reading does not change
with level

Output goes in opposite
direction from level change

Application-related
Problems

Product Bridging When process material fills what was originally airspace between the sensor and a nozzle

Corrosion of metal parts TFE and stainless steel in the sensor's pressure seal have widely different coefficients

Check calibrator connections
Check for 250Ω resistance (min.)
Check voltage at transmitter
Check transmitter

Check calibrator connections
Check for 250Ω resistance (min.)
Check voltage at transmitter
Check transmitter

Check calibrator connections
Check for 250Ω resistance (min.)
Check voltage at transmitter
Check transmitter
Try another modem

Check voltage at transmitter
Check polarity of loop
Test Transmitter

Check for moisture in head of sensor
Test Sensing Element
Test Transmitter
Check Calibration

Test transmitter without sensing element
(drift test)
Verify proper sensing element ground
reference

Test Transmitter
Check process level
Check for Static Discharge
Check for radio interference

Check Signal Loop Connections 6.7

Check calibration
Test transmitter
Check method of comparison

Check cables
Check sensing element
Test Transmitter

Check calibration Section(s) 3, 4, and 5 Probable high point

Comments

or the vessel, it no longer behaves like a coating. It measures like actual level. Contact
Drexelbrook.

of expansion that sometimes permit pressure leaks to occur. Re-torqueing the packing
assembly can usually fix the problem. Contact the Service department for the proper
torque values and procedure.

6.2 and 6.3

6.6

6.2 and 6.3

6.6

6.2 and 6.5

6.6

6.2 (6.3, 6.4, or 6.5)

6.6

6.7

6.6
Section(s) 3, 4, and 5

6.6

Fig. 2-6

6.6

6.9

6.10

6.8

Section(s) 3, 4, and 5

6.6

6.8

6.7

6.6

Often a result of loop
connection problems

Often a result of loop
connection problems

Often a result of loop
connection problems

Probable loop
problem
Faulty connection in
loop

Erratic readings
often show actual
process conditions.
Look for bubbles or
stratification, etc.

Intermittent Loop
Connection

Have you verified
actual level? (At
times even sight
gauges can be
misleading.)

Be sure that level
is really changing.
Possible plugged or
unvented stilling well.

cal/low point cal
reversal or inverted
interface application.

Table 6-1 Problem / Symptom Chart

59

RCT 10, 11, 12, 13 Series

6.1 Identifying a Problem/Symptom

Use Table 6-1 as a guide to nd and correct a problem

when it occurs. Most problems are not related to
transmitter failure. It is important to be methodical
when tracking down a problem. If you experience a
problem that you cannot solve using this guide, call the

Drexelbrook 24-hour Service Hot line at 1-800-527-6297
or 215-674-1234. You may also E-mail us at the Internet

address: [e-mail]. Further

service information may be found at our World Wide Web

address www.drexelbrook.com.

When you contact us, be prepared to give the service

person as much information as you can about the model
numbers, application requirements, and the materials
being measured. At the end of this section, a form is
available to organize the information that will help us

resolve the problem. Prior to your call, a copy of the

completed form can be faxed directly to the Service

department at [phone].

6.1.2 RCT Integral Digital Meter Display (401-0044-003) Error Codes

Error Message Description Probable Cause Corrective Action
Err 1

Err 2
Err 3

Err4

EEPROM Failure /
Checksum Error

Not Used

Analog to Digital
Converter Response
Failure

Probe Value too High Probe Resistance to

Transmitter Failure Restore Factory Defaults

See Section 3.15

Transmitter Error Contact Factory Service

1-800-527-6297

Check for Electrical Short

Ground too Low

See Section 6.7 & 6.8

6.2 Troubleshooting Loop Connection

Specic transmitter loop connections will vary from

installation to installation but in general will be
connected in a similar manner to typical transmitter loop
in Figure 4-1. When troubleshooting the loop connection,
verify the following items.

• Loop devices are wired in series.

• There is at least 250 ohms total loop resistance.

• There is at least 12 Vdc available for the transmitter
when a loop current of 20 mA is owing.

60

Troubleshooting

Is loop

current between

3.7 and 22 mA?

Is there a

minmum of 250

ohms loop

resistance?

1. Check calibrator connections to loop per loop drawing

Figure 4-1.

2. Check for "noise" and ripple on loop with oscilloscope. Maximum noise level
per HART Foundation is 1.2 mV rms (500 - 10 kHz). Maximum ripple (47 - 125
hZ) specification is .2V p-p. Line noise can sometimes be traced to things like motor
speed controller wiring in close proximity with transmitter. Noise can sometimes
be overcome by increasing loop resistance thereby increasing calibrator
signal. Noise effects can also be reduced by connecting calibrator directly at
transmitter. Generally noise is only a problem when calibrator is communicating
with transmitter and does not affect normal operation of transmitter.

3. Check voltage at transmitter it should be at least 12 V when 20 mA is flowing in loop.

4. If wiring is correct, go to

Section 6.6

to test transmitter.

Calibrator does

not

communicate

with

transmitter

Yes

Yes

Check:

1. If current greater than 22 mA, disconnect at sensing
element and re-check. If current returns to normal,
check sensing element using checkout procedure in

Section 5.7

. If current does not return to normal,

test transmitter with procedure in

Section 5.6

.

2. If loop current is 0 mA, check polarity of wiring
at transmitter. If OK check for open loop.

3. If loop current is between 0 and 3 mA transmitter
is likely bad. Test with procedure in

Section 5.6

.

4. Check voltage at transmitter, it should be at least
12 volts when 20 mA is flowing in loop.

5. Disconnect the three probe cable connections at
transmitter and retry. If it now communicates,
check cable and probe as described in

Sections 5.7 & 5.8

.

1. Check Power Supply source resistance. The 250
ohms may be built in as with the Drexelbrook 401­ 500 series or most DCS inputs.

2. If not, add enough resistance for loop to be at least
250 ohms.

Start

No

No

6.3 Rosemount Model 268 or 275 Calibrator cannot identify or
find device

If the Rosemount 268 or 275 calibrator (generic) gives

error message that no device description was found, use

the following owchart to troubleshoot.

6.4 Rosemount Model 275 Calibrator with device description cannot
identify or find device

This condition may be the result of trying to calibrate

a transmitter with software less than version 3.0
(transmitters shipped prior to approximately January

1997). There are two options you can use to identify the

device and delete the error message.

Option 1 - Congure the transmitter as a "generic"

device per the instructions in this manual.

Option 2 - Contact the Drexelbrook Service

department (1-800-527-6297) about upgrading your

transmitter to the latest software.

61

RCT 10, 11, 12, 13 Series

Is loop
current

between 3.7 and

22 mA?

Is there a

minmum of 250

ohms loop

resistance?

Are you connected

to a DCS?

Is It Polling?

Make it stop polling or power
transmitter from a separate
source - then re-check
operation.

Yes

Yes

Yes

Check:

1. Is correct COM Port selected at startup?

2. Is there any software running that would re-direct COM Port such as
Windows, mouse drivers, terminal emulation software, or TSR's.
(This can be tested by booting from Drexelbrook Calibration software in
the A: drive)

3. Possible bad RS-232 cable or defective modem.

4. Check modem connections to loop per loop drawing on

Figure 3-1

.

5. Go to

Section 5.6

to test transmitter.

Modem does

not

communicate

with

transmitter.

No

No

Start

No

Are you using

the Drexelbrook

supplied modem?

Check:

1. Is modem non-isolated
from ground and/or is your
laptop plugged into AC
power.? If so you may have
ground problem. Contact
Service department.

2. Some laptops don't provide
enough voltage to drive
modem correctly from

COM Port. Check with
modem supplier or try a

different laptop.

3. Checkout "Yes" response
tests listed below.

No

Yes

Check:

1. If current is greater than 22 mA disconnect at sensing
element and re-check. If current returns to normal,
check sensing element using checkout procedure in

Section 5.7

. If current does not return to normal,

test transmitter with procedure in

Section 5.6

.

2. If loop current is 0 mA, check polarity of loop at
transmitter. If it is OK, check for open loop.

3. If loop current is between 0 and 3 mA transmitter is
likely bad. Test with procedure in

Section 5.6

.

4. Check voltage at transmitter it should be at least 12
volts when 20 mA is flowing in the loop

5. Disconnect the three probe cable connections at
transmitter and retry. If it now communicates, check
cable and probe as described in

Sections 5.7 & 5.8

.

No

Yes

1. Check Power Supply and loop source
resistance (the 250 ohms may be built in as
with the Drexelbrook 401-500 series or most
DCS inputs).

2. If not there add enough resistance for loop to
be at least 250 ohms.

1. Check calibrator connections to loop per loop drawing

Figure 4-1

.

2. Check for "noise" and ripple on loop with oscilloscope. Maximum noise level per HART
Foundation is 1.2 mV rms (500 - 10 kHz). Maximum ripple (47 - 125 Hz) specification is .2V p-p. Line
noise can sometimes be traced to things like motor speed controller wiring in close proximity with
transmitter. Noise can sometimes be overcome by increasing loop resistance thereby increasing
calibrator signal. Noise effects can also be reduced by connecting calibrator directly at
transmitter. Generally noise is only a problem when calibrator is communicating with transmitter
and does not affect normal operation of transmitter.

3. Check voltage at transmitter. It should be at least 12 volts when 20 mA is flowing in the loop.

4. If wiring is OK, go to

Section 6.6

to test transmitter.

6.5 RCT Series transmitter does not communicate with Drexelbrook
PC software

62

Troubleshooting

6.6 Troubleshooting Transmitter

To troubleshoot the transmitter, use one of the following

Always Install to Local

Codes / Requirements /

Directives as Mandated

by the Authority Having

Jurisdiction

Install Per

420-0004-203-ID

TRANSMITTER TEST - Using a PC or 275 Handheld

WARNING:
Substitution of
Components May Impair
Intrinsic Safety.

WARNING:
To Prevent Ignition
of Flammable
or Combustible
Atmospheres, disconnect
Power Before Servicing.

tests, depending on the device used with your calibration.

Some of the following tests require the use of high quality

xed capacitors in the picofarad ranges or a Drexelbrook
calibrator box (C-box 401-6-81). Contact the Drexelbrook

Service department if you need a C-box. Fixed

temperature stable capacitors (NPO types) can often be

found at many electronic supply houses.

with device Description

1. Determine the span range currently selected on the
electronic unit. See Figure 3-9

2. Using the MAX pF values listed in Figure 6-3,
select a capacitance value near the midpoint of
the MAX pF range. For example, position #4 has
a MAX pF range of 2000 pF. Select a 1000 pF
capacitance for this test.

3. Remove all three connections of the coaxial cable at
the transmitter's probe terminals.

CAP

1 2 3 4 5 6

RANGE SPAN

GROUND PROBEPAD SHD

Figure 6-1

SPARE

4. Place capacitor on transmitter from PROBE to
GND (ground) terminals See Figure 6-1.

5a. Using a PC - Using the real-time view (F4), verify

that the displayed capacitance value is within the
value and tolerance printed on the test capacitor.
If using a Drexelbrook C-box, be sure to add the
standing capacitance of the box (10pF low range,

20 pF normal range).

5b. Using a Rosemount 275 handheld with device

description - Viewing the HOME screen, verify
that the displayed capacitance value is within the
value and tolerance printed on the test capacitor.
If using a Drexelbrook C-box, be sure to add the
standing capacitance of the box (10pF low range,
20pF normal range).

6. If the displayed capacitance value is within the

stated tolerance, the unit is working. If the
displayed capacitance value is not accurate, call

1-800-527-6297.

63

RCT 10, 11, 12, 13 Series

6.6 Troubleshooting Transmitter (Continued)

TRANSMITTER TEST - Using a 268 or 275 Handheld

WITHOUT a Device Description (Generic Mode)

Transmitter

1. Visually verify the span range of the electronic
unit.

1 2 3 4 5 6

RANGE SPAN

SPARE

2. Using the C-box, adjust the capacitance until 4 mA
is achieved. Record value. See Figure 6-2

GROUND PROBEPAD SHD

C-Box

Figure 6-2

3. Adjust C-box capacitance until 20 mA is achieved.
Record value.

4. Using Figure 6-3, verify that the capacitance value
recorded at 20 mA is less than the MAX pF value

for the Span Range Position of the electronic unit.

5. Verify that the loop conguration is Level Cong
(signal output linear to level vs. Vessel Cong).

6. Subtract pF value recorded for 4 mA from the pF

value recorded for 20 mA. Divide this number in
half.

Example: 4 mA = 120 pF
20 mA = 800 pF

800 pF – 120 pF = 680 pF
680 pF ÷ 2 = 340 pF

7. Adjust the capacitance box (C-box) to the

number gured in step 6. The signal should read
approximately 50%.

8. If the display reads 50%, the unit is working

properly. If the display is not accurate, contact the

Service department at 1-800-527-6297 for further

assistance.

6.6.1 Transmitter Drift Test

If symptoms point toward calibration drift, it is important

SPAN JUMPER POSITION
RANGE 1 2 3 4 5 6

MAX pF 20 100 450 2000 10000 40000

Figure 6-3

Span Range Capacitance Values

to determine if the apparent drift is coming from the
transmitter, the sensing element, or the application
of the equipment. The following test determines if the
transmitter is stable. In most cases, no drift will be found
in the transmitter.

64

6.6.1 Transmitter Drift Test (Continued)

1. Remove coaxial cable from the transmitter

terminals.

Transmitter

2. Without changing any data stored in the

GND

SERIAL NO.
MODEL NO.

YEAR OF MANUFACTURE

V +M -

V -

mA Meter

on Record

transmitter, connect a Drexelbrook capacitance

substitution box (401-6-8) or an NPO test capacitor
from the probe terminal to the GND terminal on

the transmitter. (Select a capacitance value that
produces between 4 and 20 mA of loop current.)

3. Observe the loop current over a 12-hour period to

conrm the stability of the unit. If the readings

remain stable for this period, then the problem

24 VDC

is not in the transmitter. If the loop current has
changed more than 1% during the test period, then

the unit is defective. Please contact the Service

Figure 6-4

department for further instructions regarding
repair or replacement.

6.7 Troubleshooting Sensing Element

Troubleshooting

Troubleshooting sensing element requires use of

an analog ohmmeter. Digital meters do not properly

measure resistance for the purpose of this test. An
analog ohmmeter typically provides more current when
measuring resistance, which is required to detect a
pinhole or crack in the sensing element insulation. In
addition, digital meters frequently give erroneous results
due to a battery-like effect when dissimilar metals contact
conductive liquids.

CAUTION: Sensing element is intrinsically

safe. Therefore, when using this product, it is
recommended that all service activity comply with
appropriate guidelines.

Remove sensing element from vessel to a safe area.

Test outlined in steps 1 and 2 can be performed

in a metal test vessel lled with high conductivity

water. Depending on locality, tap water may not be
suitable. If not, a spoonful of table salt may work.

In the following tests, if it is not possible to raise or lower

level in vessel, sensing element may be suspended in a

metal pipe or other container that is lled with conductive

water (see above note) and connected to grounded sensing
element condulet. If container is not metallic, then a
ground wire or rod is needed to be placed into the water
and referenced to sensing element condulet or mounting
devices.

65

RCT 10, 11, 12, 13 Series

6.7 Troubleshooting Sensing Element (Continued)

Testing the Sensing Element - Step 1 (Figure 6-5)

With the material below the sensor, and the coaxial

cable disconnected at the sensing element, measure the
resistance from the sensing element center connector to
ground connector (or condulet). The ohmmeter should

be set to R x 10000 scale. The reading should be innite

(open circuit). Readings of less than one meg-ohm indicate
excessive electrical leakage, probably due to product
leakage or condensation in the packing seal or condulet.
Contact the Service department for recommended repairs.

Figure 6-5

Sensing Element Testing,

Material Below

the Sensing Element

Testing the Sensing Element - Step 2 (Figure 6-6)

Raise the level in the vessel to cover as much of the sensor
as possible. Repeat the measurement made in step 1.
Readings of 1 meg-ohm or less indicate a pinhole or crack
in the sensing element insulation. Failed insulation is

not eld repairable. Consult the Service department for

further assistance.

Figure 6-6

Sensing Element Testing,

Material Covering

the Sensing Element

6.8 Troubleshooting Coaxial Cable

If there is water or other conductive material in the

conduit it can change the electrical properties of the coax
cable and cause the system to perform poorly. Moisture
in the conduit may not be detected by the following test.

66

6.8 Troubleshooting Coaxial Cable (Continued)

The only sure way is to inspect the coax and associated
conduit for trapped water.

1. Disconnect all three wires of the coaxial cable at

the electronic unit.

2. Disconnect all wires at the sensing element end of

the coax.

3. Using an ohmmeter, measure between two of the

coaxial cable conductors. Note any reading. Repeat

for all three conductors. All readings should show

an open circuit, (innite resistance).

Troubleshooting

OHMMETER

8

0

4. Check for continuity of each conductor. Short out

two of the coaxial cable conductors and measure
these two conductors at the other end. A reading
close to 0 ohms should be shown.

CENTER - GROUND

CENTER - SHIELD
SHIELD - GROUND

SHORTED WIRES SHOULD READ 0 OHMS

CHECK FOR CONTINUITY

"0"
"0"
"0"

OHMS
OHMS
OHMS

SHORT OUT

TWO CONDUCTORS

67

RCT 10, 11, 12, 13 Series

6.9 Static Electricity

Static electricity can cause the 4-20 mA output to appear

to jump around in an erratic fashion with a time period
of few seconds. Applications that are prone to static
electricity include insulating liquids that may be agitated
or pumped and granulars that may be air-conveyed at
high rates of speed. Conductive liquids and conductive
granulars tend not to generate static electricity. In
addition to causing erratic readings, static electricity can
cause instrument failure. If you ever get a static shock
from a sensing element, you need spark protection. (See
section 2.5)

Drexelbrook normally supplies static electricity discharge

devices (spark protectors) with its sensing elements that
are going to be used in these types of applications. If you
need a spark protector, contact the Drexelbrook Service
department.

6.10 Radio Frequency Interference

All Drexelbrook transmitters have a signicant amount

of RFI protection built in. There are situations, however,

where the standard protection is inadequate. RFI lters

are available to provide additional protection for both

the sensor and the 4-20 mA loop from unusually difcult
sources of interference. Proper grounding and careful

attention to installation practices can usually make them
unnecessary. Some recommended installation practices
include:

1. Use twisted shielded cable for the 4-20 mA loop.

2. Use grounded metal conduit for all entrances to the
transmitter housing.

3. Ground the transmitter housing to a good earth

ground.

4. Use concentric shield sensors in non-metallic
vessels.

If RFI continues to be a problem, contact the Drexelbrook

service department for the proper lters and assistance.

6.11 Factory Assistance

AMETEK Drexelbrook can answer any questions about

your level measurement system.

For Technical Support: 1-800-527-6297

If you require assistance and attempts to locate the

All other inquiries: Call Customer Service at

1-800-553-9092 (US and Canada) , or + 215-674-1234

(International).

problem have failed:

68

Troubleshooting

6.11 Factory Assistance (Continued)

• Contact your local Drexelbrook representative,

• For Technical Assistance call toll-free:

1-800-527-6297 (US and Canada)
or + 215-674-1234 (International),

• FAX: + 215-443-5117,

• E-mail: [e-mail]

Please provide the following information:

• Instrument Model Number

• Sensing Element Model Number and Length

• Original Purchase Order

• Material being measured

• Temperature

• Pressure

• Agitation

• Brief description of the problem

• Checkout procedures that have failed

6.12 Field Service

Trained eld servicemen are available on a time-plus-

expense basis to assist in start-ups, diagnosing difcult

application problems, or in-plant training of personnel.
Contact the service department for further details.

6.13 Customer Training

Periodically, AMETEK Drexelbrook instrument training

seminars for customers are held at the factory. These
sessions are guided by Drexelbrook engineers and
specialists, and provide detailed information on all
aspects of level measurement, including theory and
practice of instrument operation. For more information
about these valuable workshops, write to AMETEK

Drexelbrook, attention: Communications/ Training Group,
or call direct + 215-674-1234.

6.14 Return Equipment

Any equipment being returned for repair or credit

must be pre-approved by the factory.

In many applications, sensing elements are exposed to

hazardous materials.

69

RCT 10, 11, 12, 13 Series

6.14 Return Equipment (Continued)

• OSHA mandates that our employees be informed

and protected from hazardous chemicals.

• Material Safety Data Sheets (MSDS) listing the

hazardous materials to which the sensing element
has been exposed MUST accompany any repair.

• It is your responsibility to fully disclose all

chemicals and decontaminate the sensing element.

To obtain a return authorization (RA#), contact the

Service department at 1-800-527-6297 (US and Canada)
or + 215-674-1234 (International).

Please provide the following information:

• Model Number of Return Equipment

• Serial Number

• Original Purchase Order Number

• Process Materials to which equipment has been

exposed

• MSDS sheets for any hazardous materials

• Billing Address

• Shipping Address

• Purchase Order No. for Repairs

Please include a purchase order even if the repair is under

warranty. If repair is covered under warranty, you will not be

charged.

Ship equipment freight prepaid to:
AMETEK Drexelbrook

205 Keith Valley Road
Horsham, PA 19044-1499

COD shipments will not be accepted.

70

AMETEK Drexelbrook™

Universal III Mark II Troubleshooting Guide

Service Department [phone] FAX[phone]

Phone #

6.15 RCT Series Troubleshooting Guide

AMETEK Drexelbrook

RCT Series Troubleshooting Guide

Service Department [phone] FAX [phone]

Service Dept. Contact

Troubleshooting

Customer Name Company

Fax #

Purchase Order # DE #

Electronic Unit Model # Serial # Range Jumper Position

Sensing Element Model # Serial # Insertion Length Mounting

Process Material Temp. Press. Other

Provide as much of the following information as possible. All of the information is available from the
Drexelbrook Calibration Software, or from a Rosemount Model 275 with Drexelbrook Device Description
(DD) installed. Information with an asterisk is available from a Rosemount 268 or 275 in the Generic mode.

AMETEK Drexelbrook

*Tag ID

*Scratch Pad

Analog Loop Assign

*Damping Time

Level Configuration Vessel Configuration

Level Units

Maximum Level

Level Type

*LRV (4mA)

*URV (20mA)

HART® Protocol Software Version

*Serial Number

Software Version

Range Position

Type (00/30)

Vessel Units

Maximum Capacity

Vessel Type

City/State

Vessel Sketch

True Level Reference

Lower Reference Cap.

Upper Reference Cap.

Press F4 For Real-Time View

Level

Vessel

Capacitance

Reference

Loop Current

Percentage

Status

Capacitance Calibration

Lower Level

Lower Capacitance

Upper Level

Upper Capacitance Status:

Detailed description of problem:

Show principal tank dimensions, including vessel construction, mounting

location, nozzle, LRV, URV, present level, etc.

71

SECTION 7

SECTION 7: SPECIFICATIONS

7.1 Transmitter Specifications

Power Requirement

• 12 to 30 VDC

• Minimum of 12 VDC at 20 mA

Input Range

• 409-T: 1.0 to 40,000 pF

Output Range

• 4-20 mA

Accuracy

• ± 0.25% of range. Accuracy includes the combined

effects of linearity, hysteresis, and repeatability.
It refers to the transmitter only and is measured

at reference conditions of 25 degrees C ±1°, 10­55% R.H. and 24 ±1.2 Vdc, using an admittance

standard (applied to the transmitter sensor
terminals) in place of the sensor.

Specications

Load Resistance

• Maximum Load Resistance = 750 ohms

• Minimum Load Resistance

With HART® Communications = 250 ohms
Without HART® Communications = 0 ohms

Temperature Effect

• ±1% of range per 50°F (30°C).

Supply Voltage Effect

• < 0.1% from 12 to 30 VDC.

Effect of Load Resistance

• < 0.1% for full resistance range at 24 VDC supply.

Response to Step Change

• < 1 second standard (to 90% of nal value); 0-90

seconds available with delay.

Fail-Safe

• Low-Level Fail-Safe (LLFS) standard.

Also called direct-acting because current increases
as the level increases.

• High-level Fail-Safe (HLFS).

Also called reverse-acting because current
decreases as level increases.

There Are No Devices That Are Absolutely “Fail-Safe".

Fail-safe means that in the event of the most probable failures,
the instruments will fail safely. Probable failures include
things such as loss of power and transistor and component
failures. If your application needs absolute fail-safe, a back­up instrument should be installed.

Ambient Temperature

• -40°F to +167°F (-40°C to 75°C)

73

RCT 10, 11, 12, 13 Series

7.1 Transmitter Specifications (Continued)

Calibration Adjustments

• Range Span, 6 positions (back panel)

Lowest Permitted Resistance
(bare sensing element to ground) causing 5% error in each

model:

• 600 ohms - 409-TX0, 2

• 100K ohms - 409-TX1, 3

Intrinsic Safety

• Sensing element and cable: Designed to be
intrinsically safe for Class I Groups A, B, C and
D; *Class II Groups E, F, and G, Class III, Div. 1.

Electronics and signal wires: Intrinsically safe for

Class I Groups A, B, C, and D, Class II Groups E, F
and G Div. 1 when powered by an intrinsically safe

power supply. EEx ia Zone 0.

* When provided in the aluminum enclosure

(RCT Series)

Nonincendive Equipment

• Class I Div. 2, Groups A, B, C, and D; Class II,
Div 2, Groups E, F, and G, Class III Div 2

Sensing Element Cable Length

• 100 feet maximum.

7.2 Coaxial Cable Specifications

General Purpose 380-XXX-12

• .51" (13mm) OD at largest point,
160°F (70°C) temperature limit.

Composite Cable 380-XXX-18

(rst 10 feet high temperature)

• .62" (16mm) OD at largest point,
450°F (230°C) temperature limit for rst 10 feet.

• 160°F (70°C) temperature limit for remainder.

CE Mark Triaxial Cable 380-XXX-520

• .62" (16mm) OD at largest point,

-55°F to 176°F (-55°C to 80°C) temperature limit.

7.3 Enclosure Specifications

• The RCT transmitter and remote sensor enclosures

are constructed of aluminum and are rated both

NEMA 4X and IP65. Conduit entries are 3/4 NPT

with M20 adapters available The enclosures are
powder coated to provide additional corrosion
resistance.

74

7.4 Approvals Available

7.4.1 ATEX Approvals - Install Per 420-0004-203-ID

Integral Systems

Specications

205 KEITH VALLEY ROAD
HORSHAM, PA 19044

Amb Temp -40˚C...+75˚C
Ui = 30V
Ii = 140 mA
Pi = 1W
Ci = 0.001 uF
Li = 0mH

12-30 VDC
4-20mA
T135˚C

INSTALL PER 420-004-203-ID

205 KEITH VALLEY ROAD
HORSHAM, PA 19044

MODEL NO. 409-TXXX

SERIES LEVEL CONTROL

II 1 G EEx ia IIC T4

0344

KEMA NO. 03 ATEX1249 X

Ui : 30V
Ii : 140 mA
Pi : 1W
Ci : 0.001uF
Li : 0mH

INSTALL PER 420-0004-203-ID

270-0101-812

RCT Series

Level Control

0344

II 1 GD EEx ia IIC T4 T135˚C

KEMA NO. 03 ATEX1249 X

SERIAL NO. ACA-XXXXXX

ENCLOSURE TYPE IP65

270-0101-804

Amb Temp:

-40˚C...+75˚C

12-30VDC
4-20mA

IP650344

II 1 GD EEx ia IIC T4

Remote Systems

IP650344

II 1 GD EEx ia IIC T4

Temperature Class Process Temperature
T6 85° C
T5 100° C
T4 135° C

T3 200° C

Chassis Only

II 1 G EEx ia IIC T4

For indoor locations
enclosure must be minimum
IP20 rated.

For outdoor locations
enclosure must be minimum
IP44 rated.

A higher degree may
be required for harsh
environments. See Note 1

RCT SERIES REMOTE SENSING ELEMENT ENCLOSURE

YEAR OF MANUFACTURE - SEE INSIDE TRANSMITTER ENCLOSURE

II 1 G EEx ia IIC T3...T6,
T135˚C

BELONGS TO KEMA 03 ATEX1249X

0344

Amb Temp -40˚C...+75˚C
Ui = 30V
Ii = 140 mA
Pi = 1W
Ci = 0.001 uF
Li = 0mH

270-0101-847

Remote Sensor

Note 1: Always Install to Local Codes / Requirements / Directives as Mandated by the Authority

Having Jurisdiction

Note 2: For applications in explosive atmospheres caused by air / dust mixtures, a degree of

ingress protection of ot least IP 60 according to EN 60529 will only be achieved when
certified cable and conduit entries are used providing a degree of ingress protection of
at least IP65 according to EN60529

Note 3: The aluminum enclosure must be protected from mechanical friction and impact that

could cause ignition capable sparks.

WARNING: Substitution of Components May Impair Intrinsic Safety.

WARNING: To Prevent Ignition of Flammable or Combustible Atmospheres,

disconnect Power Before Servicing

75

RCT 10, 11, 12, 13 Series

7.4.2 CSA Approvals - Install Per 420-0004-225-CD

Intrinsically Safe

Class I, Div. 1, Groups A, B, C and D;
Class II, Div. 1, Group E, F and G; Class III

Class I, Zone 0: Ex ia IIC

Class I, Div. 2, Groups A, B, C and D;
Class II, Div. 2, Group E, F and G; Class III

Class I, Zone 2: Ex na IIC

For Ambient temperatures above 70º C, use wiring
rated 75º C or higher.

7.4.3 FM Approvals - Install Per 420-0004-224-CD

Intrinsically Safe:Class I, II, III, Div. 1, Groups A, B, C,

D, E, F, G
Nonincendive: Class I, Div. 2, Groups A, B, C, D
Special Protection: Class II, Div. 2 , Groups F, G
Dust-Ingnitionproof: Class I, II, Div. 1, Groups E, F, G

76

Normal Maintenance

SECTION 8: NORMAL MAINTENANCE

8.1 Viewport Cleaning

The viewport (if supplied) is made of Borosilicate glass

and can be cleaned with any common glass cleaning

product (e.g.: Windex™, Isopropyl alcohol, etc.) that is
suitable for the Class and Division rating of the specic

system installation.

77

APPENDIX A

APPENDIX A: APPROVAL DRAWINGS

A.1 ATEX APPROVAL DRAWINGS

Appendix A

A-1

RCT 10, 11, 12, 13 Series

A.1 ATEX APPROVAL DRAWINGS (Continued)

A-2

A.1 ATEX APPROVAL DRAWINGS (Continued)

Appendix A

A-3

RCT 10, 11, 12, 13 Series

A.1 ATEX APPROVAL DRAWINGS (Continued)

A-4

A.1 ATEX APPROVAL DRAWINGS (Continued)

Appendix A

A-5

RCT 10, 11, 12, 13 Series

A.1 ATEX APPROVAL DRAWINGS (Continued)

A-6

A.1 ATEX APPROVAL DRAWINGS (Continued)

Appendix A

A-7

RCT 10, 11, 12, 13 Series

A.1 ATEX APPROVAL DRAWINGS (Continued)

A-8

A.1 ATEX APPROVAL DRAWINGS (Continued)

Appendix A

A-9

RCT 10, 11, 12, 13 Series

A.1 ATEX APPROVAL DRAWINGS (Continued)

A-10

A.1 ATEX APPROVAL DRAWINGS (Continued)

Appendix A

A-11

RCT 10, 11, 12, 13 Series

A.2 CSA APPROVAL DRAWINGS

A-12

A.2 CSA APPROVAL DRAWINGS (Continued)

Appendix A

A-13

RCT 10, 11, 12, 13 Series

A.2 CSA APPROVAL DRAWINGS (Continued)

A-14