Sensorex TCSMA Operation And Maintenance Manual
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Sensorex TCSMA Operation And Maintenance Manual

Conductivity measurement system
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Model TCSMA
Conductivity Measurement
(Toroid Sensor, Blind, 2-Wire 4-20mA Transmitter)
Operation and Maintenance
O & M Manual
REV G, 7/2009
System
Manual
1
11751 Markon Dr.
Garden Grove, CA 92841 USA
Tel: 714-895-4344
Fax: 714-894-4839
E-mail: info@sensorex.com
www.sensorex.com

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  • Page 1 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 E-mail: info@sensorex.com www.sensorex.com O & M Manual REV G, 7/2009...
  • Page 2 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.

  • Page 3: Table Of Contents

    Table of Contents Part 1 Introduction General Features TCSMA System Specifications TCSMA Performance Specifications Part 2 Transmitter Mounting General Wall Mount Pipe Mount Panel Mount Part 3 Sensor Mounting General Part 4 Transmitter Electrical Installation General Power Load Drive Part 5...
  • Page 4 External Sources of Problems Transmitter Tests Sensor Tests Spare Parts List Diagrams and Illustrations Figure 1-1 Specifications - Views Figure 2-1 TCSMA Mounting Details Figure 2-2 Panel Mount and Cut-Out Figure 4-1 Loop Power Connection Figure 5-1 Bulkhead Connection Figure 8-1 Pt1000 RTD Table O &...

  • Page 5: Part 1 Introduction

    Part 1 - Introduction 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 110C.

  • Page 6: Tcsma System Specifications

    TCSMA Conductivity System Part 1 - Introduction 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"...
  • Page 7 TCSMA Conductivity System Part 1 - Introduction Inches (mm) 1” NPT WITH PG-11 ADAPTER AND PG-11 CORD GRIP Figure 1-1 Specifications - Views O & M Manual REV G, 7/2009...

  • Page 8: Tcsma Performance Specifications

    TCSMA Conductivity System Part 1 - Introduction 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...

  • Page 9: Part 2 Transmitter Mounting

    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.
  • Page 10 TCSMA Conductivity System Part 2 – Transmitter Mounting Inches (mm) Figure 2-1 Mounting Bracket Details O & M Manual REV G, 7/2009...

  • Page 11: Panel Mount

    TCSMA Conductivity System Part 2 – Transmitter Mounting 2.4 Panel Mount In the panel mount configuration, the entire enclosure is panel-mounted using a special optional sealing flange – as shown in Figure 2-2. The panel mount kit, part number 07-0204, must be ordered separately.
  • Page 12 TCSMA Conductivity System Part 2 – Transmitter Mounting Inches (mm) Figure 2-3 Panel Mount and Cut-out O & M Manual REV G, 7/2009...

  • Page 13: Part 3 Sensor Mounting

    Part 3 – Sensor Mounting 3.1 General Select a location within the maximum sensor cable length for mounting of the sensor flow cell. Locate sensor away from pumps, adjustable frequency drive systems, or other sources of high frequency EMI if possible. Once submerged, verify that the sensor has the proper minimum 2”...

  • Page 14: Part 4 Transmitter Electrical Installation

    Part 4 – Transmitter Electrical Installation 4.1 General The TCSMA loop-powered instrument is a 16-35 VDC powered transmitter. WARNING: Do not connect AC line power to the 2-wire module. Severe damage will result. Important Notes: Use wiring practices that conform to all national, state and local electrical codes.

  • Page 15: Load Drive

    V=load drive voltage, I=maximum loop current (in Amperes), and R=maximum resistance load (in Ohms). To find the load drive voltage of the two-wire TCSMA, subtract 16 VDC from the actual power supply voltage being used (the 16 VDC represents insertion loss). For example, if a 24 VDC power supply is being used, the load drive voltage is 8 VDC.
  • Page 16 TCSMA Conductivity System Part 4 – Transmitter Electrical Installation For example, if the power supply voltage is 24 VDC, first subtract 16 VDC, then divide the remainder by .02. 8/.02 = 400; therefore, a 400 Ohm maximum load can be inserted into the loop with a 24 VDC power supply.

  • Page 17: Part 5 Sensor Electrical Connection

    Part 5 – Sensor Electrical Connection 5.1 General The sensor cable can be quickly connected to the TCSMA terminal strip by matching the wire colors on the cable conductors. A junction box is suggested to provide a quick- disconnect point for the sensor, or a break point for very long sensor cable runs.

  • Page 18: Junction Box Connection

    TCSMA Conductivity System Part 5 – Sensor Electrical Connection Once inside the enclosure, the individual colored sensor sensor cable leads can be connected directly to the SENSOR connection terminals by matching the wire colors. 5.3 J-Box Connection For installations where the sensor is to be located more than 20 feet from the transmitter, a customer supplied junction box should be used.

  • Page 19: Part 6 Calibration

    Part 6 – Calibration 6.1 General The transmitter is factory calibrated in a default range of 0- 10,000 uS/cm. The transmitter must be re-calibrated with the actual sensor for optimum accuracy using the following procedure. 6.2 User Interface The user interface controls for the transmitter are quite simple, and they are described below.

  • Page 20: Temp Comp Adjustment

    TCSMA Conductivity System Part 6 - Calibration Due to the nature of the sensor design, it is recommended to use the largest range possible for the application. The higher instrument ranges are easier to user calibrate, as they require less back- and-forth zero/span adjustments.

  • Page 21: Conductivity Calibration

    TCSMA Conductivity System Part 6 - Calibration 6.3 Conductivity Calibration This section details the procedure to change the factory calibration of the transmitter. The instrument may be calibrated using a reference instrument, using pre-mixed calibration solutions, or mixing NaCl calibration solutions application.
  • Page 22 TCSMA Conductivity System Part 6 - Calibration Due to the nature of the sensor design, it is recommended to use the largest range setting possible for the application when using the 500- 2,500 uS range. The higher instrument ranges are easier to user calibrate, as they require less back- and-forth zero/span adjustments.

  • Page 23: Reverse Operation

    TCSMA Conductivity System Part 6 - Calibration 6. While still in solution, adjust the FINE SPAN to dial in the final value to 20.00 mA. 7. Pull sensor back into air, rinse, and gently shake off solution. Re-adjust 4 mA point with OFFSET control if necessary.

  • Page 24: Part 7 System Maintenance

    Part 7 – System Maintenance 7.1 General The TCSMA Conductivity System will generally provide unattended operation over long periods of time. With proper care, the system should continue to provide measurements indefinitely. For reliable operation, some minimal level of maintenance on the system must be done on a regular schedule.

  • Page 25: Part 8 Service

    Part 8 – Service 8.1 General The information included in this section is intended to be used to quickly resolve an operational problem with the system. During any troubleshooting process, it will save the most time if the operator can first determine if the problem is related to the transmitter, sensor, or some external source.

  • Page 26: Transmitter Tests

    TCSMA Conductivity System Part 8 – Service 5. Check for possible ground loops. Although the sensor is electrically isolated from the process water, high frequency sources of electrical noise may still cause erratic behavior in extreme conditions. If readings are...
  • Page 27 TCSMA Conductivity System Part 8 – Service B. Connect a DVM between the RED and BLACK wires in the red jacket pair. With the DVM set to measure resistance, you should measure between 0.5 and 2.0 Ohms. C. Connect a DVM between the WHITE and BLACK wires in the white jacket pair.

  • Page 28: Spare Parts List

    TCSMA Conductivity System Part 8 – Service 8.5 Spare Parts List- MODEL TCSMA PART NO. DESCRIPTION TCSMA TCSMA blind 4-20mA toroidal conductivity transmitter TCS-3020-P1K Toroidal Conductivity Sensor, polypropylene, with integral Pt 1000 RTD temperature sensor and 20 ft. cable with tinned...

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