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Mobrey 9700 Series Instruction Leaflet

Hydrostatic level transmitter
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Instruction Leafl et
IP342, Rev. AD
August 2011
Mobrey Series 9700
Hydrostatic level transmitter
The 9700 Hydrostatic Level Transmitter is a
measuring instrument and should be handled
with due care and attention at all times.
• Do not swing sensor by the cable
• Do not drop or impact the sensor
www.delta-mobrey.com
Features
• Loop powered
• 4 to 20mA output
• Intrinsically safe option
• +/- 0.1% accuracy
• 10:1 rangeability
• Spans from 0.2 to 200 m H
• Integral or remote calibration
• Good long-term stability
• Ceramic capacitive sensor
• Wide range of process connections
• Direct process mounting
• Approved by the world's leading Marine
Classif cation societies
Contents
Section
1
2
3
4
5
6
7
8
9
Level
0
2
Page
2
3
4
5
7
10
10
11
11

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Summary of Contents for Mobrey 9700 Series

  • Page 1: Table Of Contents

    Instruction Leafl et IP342, Rev. AD Level August 2011 Mobrey Series 9700 Hydrostatic level transmitter Features • Loop powered • 4 to 20mA output • Intrinsically safe option • +/- 0.1% accuracy • 10:1 rangeability • Spans from 0.2 to 200 m H •...

  • Page 2: Specif Cation

    Section 1 : Specifi cation Functional 9710, 9720, 9780 9790 Suspended in tank External to tank Two-wire, 4-20mA Output signal : Two-wire, 4-20mA 10 - 30V d.c. Power supply : 10-30V d.c. R = 50 x (supply voltage -10V) Load resistance : R = 50 x (supply voltage -10V) ...

  • Page 3: Product Overview

    • 9790 - Flanged 190mm / 7.5" max. • Threaded mounting is available upon request Typical installation In order to simplify installation, all 9700 series 9710 - transmitters can be supplied with remote zero and Cable span. suspended Remote zero and span allows zero and full scale output to be set without removing sensor from process, this option includes an IP67 junction box.

  • Page 4: Installation

    Section 3 : Installation Cable and termination Submersible 9700 units are supplied f tted with When installed in an explosive a specif ed length of vented cable. In the case atmosphere refer to ATEX Safety of units with integral electronics this should be Instructions IP341/SI and CSA control drawing terminated in a vented box.

  • Page 5: Wiring Diagrams

    Section 4 : Wiring Diagrams Page 5...
  • Page 6 Page 6...

  • Page 7: Calibration

    4 - 20mA loop (e.g. the indicator, PLC or controller). NOTE : All 9700 Series Units are generally supplied pre-calibrated and ranged specif cally for For Series 9710, 9720, 9780, 9790 with remote the application details supplied with the order.
  • Page 8 5.3.3 Ensure transmitter is isolated from the Re-ranging transmitter process and at zero pressure. 5.1.1 Verify sensor range from range code shown on sensor body. 5.3.4 Turn potentiometer “SN” until multimeter reads 0.00 millivolts, disconnect 5.1.2 Connect 24v dc to transmitter. (12 to 30V multimeter and seal the 'SN' for standard units and 10 to 30V for I.S.
  • Page 9 Linearity Adjustment Chart Sensor response time 5.5.1 The sensor damping can be adjusted via link 1 as shown below. Electronics housing top view (cover removed) 5.5.2 With link 1 present the response time is Re-assembly of the sensor approximately 60mS for a 63% response Refer to Section 5.0.

  • Page 10: Fault F Nding

    Section 6 : Fault Finding The following is a guide to simple fault Remote transmitters fi nding By connecting a Multimeter between 6.1.1 terminal 4 (the OV white) and the following Lightning HIGH mA OUTPUT terminal in the remote transmitter, the NO CHANGE IN OUTPUT WITH given voltages should be observed.

  • Page 11: Csa Control Drawing

    Section 8 : CSA Control drawing Section 9 : Integral cable length for intrinsically safe systems In calculating the permissible capacitance for an intrinsically safe system, the cable supplied with 9700 Integral the equipment must be taken into consideration. Integral electronics: The value of Ci (378nF) must be increased by 0.25nF for each metre of integral cable f tted above 120m...
  • Page 12 IP342, Rev. AD Level August 2011 Linkedin.com/company/delta-mobrey-ltd Twitter.com/DeltaMobreyUK Head Office (UK) Facebook.com/DeltaMobreyUK Delta Mobrey Limited Riverside Business Park, Dogflud Way, Farnham, GU9 7SS, UK Standard Terms and Conditions of Sale can be found at: www.delta-mobrey.com +44 (0)1252 729140 +44 (0)1252 729168...

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