Sensorex TCSMA Manuale utente
O & M Manual 1
REV G, 7/2009
Model TCSMA
Conductivity Measurement
System
(Toroid Sensor, Blind, 2-Wire 4-20mA Transmitter)
Operation and Maintenance
Manual
11751 Markon Dr.
Garden Grove, CA 92841 USA
Tel: 714-895-4344
Fax: 714-894-4839
www.sensorex.com
O & M Manual 2
REV G, 7/2009
PRODUCT WARRANTY
SENSOREX warrants all products to be free of defects in materials and
workmanship for 1 year from date marked on the product. However, SENSOREX
offers no warranty, either expressed or implied, as to the useful life of these
products. There are no implied warranties of merchantability or fitness for a
particular purpose given in connection with the sale of any goods. In no event
shall SENSOREX be liable for consequential, incidental or special damages.
The buyer’s sole and exclusive remedy and the limit of SENSOREX’s liability for
any loss whatsoever shall not exceed the purchase price paid by the purchaser
for the product to which claim is made.
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REV G, 7/2009
Table of Contents
Part 1 Introduction
1.1 General 5
1.2 Features 5
1.3 TCSMA System Specifications 6
1.4 TCSMA Performance Specifications 8
Part 2 Transmitter Mounting
2.1 General 9
2.2 Wall Mount 9
2.3 Pipe Mount 9
2.4 Panel Mount 9
Part 3 Sensor Mounting
3.1 General 13
Part 4 Transmitter Electrical Installation
4.1 General 14
4.2 Power 14
4.3 Load Drive 15
Part 5 Sensor Electrical Connection
5.1 General 17
5.2 Direct Sensor Connection 17
5.3 Junction Box Connection 18
Part 6 Calibration
6.1 General 19
6.2 User Interface 19
6.21 Offset Adjustment 19
6.22 Coarse Span Adjustment 19
6.23 Fine Span Adjustment 19
6.24 Range Selection 19
6.25 Temp Comp Adjustment 20
6.26 REV/DIR Switch 20
6.27 Loop Current 20
6.28 Cell Drive 20
6.3 Conductivity Calibration 21
6.4 Reverse Operation 23
Table of Contents (continued)
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REV G, 7/2009
Part 7 System Maintenance
7.1 General 24
7.2 Transmitter Maintenance 24
7.3 Sensor Maintenance 24
Part 8 Service
8.1 General 25
8.2 External Sources of Problems 25
8.3 Transmitter Tests 26
8.4 Sensor Tests 26
8.5 Spare Parts List 27
Diagrams and Illustrations
Figure 1-1 Specifications - Views 7
Figure 2-1 TCSMA Mounting Details 10
Figure 2-2 Panel Mount and Cut-Out 13
Figure 4-1 Loop Power Connection 15
Figure 5-1 Bulkhead Connection 17
Figure 8-1 Pt1000 RTD Table 27
O & M Manual 5
REV D, 2/2007
Part 1 - Introduction
1.1 General The Model TCSMA is a blind, loop-powered monitoring
system, designed for the continuous measurement of
solution conductivity. The full scale operating range of the
transmitter may be user adjusted to any value between 500
uS and 1,000,000 uS using the same sensor. The sensing
system will operate on water streams with temperatures from
-5°C to 110C.
1.2 Features - Special toroidal sensor design greatly minimizes sensor
fouling and, therefore, reduces maintenance requirements.
- Standard main module is designed to be a fully isolated, loop
powered instrument for 2-wire DC applications.
- Can be user-adjusted for specific application span from 500
uS to 1,000,000 uS using the same sensor.
- Direct/Reverse operation allows 4-20 mA output direction to
be flipped.
- Adjustable temperature compensation from 0% to 4% per °C
to match solution requirements.
- Loop indicator LED glows to indicate loop current level.
- Instrument supplied in rugged NEMA 4X enclosure with
multi-purpose mounting bracket.
TCSMA Conductivity System Part 1 - Introduction
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REV G, 7/2009
1.3 TCSMA System Specifications
Measuring Range Manual selection of one of the following ranges,
500 to 2,500 uS/cm
2,500 to 15,000 uS/cm
15,000 to 100,000 uS/cm
100,000 to 1,000,000 uS/cm
Enclosure NEMA 4X, IP66, polycarbonate, stainless steel
hardware, weatherproof and corrosion resistant,
HWD: 4.4" (112 mm) x 4.4" (112 mm) x 3.5" (89
mm)
Mounting Options Wall, panel, pipe, DIN rail, or integral-sensor.
Conduit Openings Standard: 1 - PG-9 opening, 1 - 1" NPT center
opening, cordgrips and PG-11 adapter included.
Weight 1 lb. (0.45 kg)
Ambient Temperature Transmitter Service, -20 to 60 °C (-4 to 140 ºF)
Sensor Service, -5 to 110°C (23 to 230 °F)**
Storage, -30 to 70 °C (-22 to 158 ºF)
Ambient Humidity 0 to 95%, non-condensing
Location Designed for hazardous and non-hazardous areas
EMI/RFI Influence Designed to EN 61326-1
Output Isolation Inherently isolated by sensor design
Temperature Input Pt1000 RTD with automatic compensation,
compensation adjustable from 0.0 to 4.0%/°C.
Sensor Noryl body toroidal, 150 psig max, ¾” NPT rear
process connection, P1000 RTD, CPVC 20 ft
length integral cable.
Max. Sensor-to-Transmitter
Distance 200 feet (61 meters)
Power 16-35 VDC (2-wire device)
DC Cable Type Belden twisted-pair, shielded,
Maximum length 3000 ft (914 meters)
Insertion Loss 16 VDC
** Note – sensor cable limited to 105°C max temperature when dry and 70°C max temperature if
submerged.
TCSMA Conductivity System Part 1 - Introduction
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REV G, 7/2009
Figure 1-1 Specifications - Views
Inches
(
mm
)
1” NPT
WITH PG-11
ADAPTER
AND PG-11
CORD GRIP
TCSMA Conductivity System Part 1 - Introduction
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REV G, 7/2009
1.4 TCSMA Performance Specifications
Repeatability 0.2% of selected range
Sensitivity 0.1% of selected range
Non-linearity 0.5% of selected range
Stability 0.2% of range per 24 hours, non-cumulative
Temperature Drift 0.06% of range/°C, span or zero
Response Time 2 seconds to 90% of full-scale step input
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REV D, 2/2007
Part 2 – Transmitter Mounting
2.1 General A bracket is included with each unit that allows mounting to
walls, pipes and DIN rail. In all cases, choose a location that
is readily accessible for calibrations. Also consider that it
may be necessary to utilize a location where solutions can
be used during the calibration process.
Locate the instrument in close proximity to the point of
sensor installation - this will allow easy access during
calibration. The sensor-to-instrument distance should not
exceed 200 feet. To maximize signal-to-noise ratio however,
work with the shortest sensor cable possible. The standard
cable length of the sensor is 20 feet (6.1 meters).
2.2 Wall Mount The instrument may be easily wall mounted (see Figure 2-1
details). The multi-purpose bracket is attached to the rear of
the enclosure using the four provided pan head screws. The
protrusion side of the multi-purpose bracket should face into
the depression on the rear of the instrument enclosure. The
instrument is then attached to the wall using the four outer
mounting holes in the bracket.
2.3 Pipe Mount For the pipe-mounting configuration, the multipurpose
bracket is attached to the rear of the enclosure with the four
provided screws. The protrusion on the bracket must face
outward. The bracket may be rotated for proper alignment
prior to mounting (see Figure 2-1 for details).
Once the bracket is fastened to the rear of the enclosure, the
provided pipe clamp must be completely opened and slipped
through the two slots in the multi-purpose mounting bracket.
The clamp is then looped around the pipe, re-attached, and
tightened.
TCSMA Conductivity System Part 2 – Transmitter Mounting
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REV G, 7/2009
Figure 2-1 Mounting Bracket Details
Inches
(
mm
)
Indice
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