Subscribe to Our Youtube Channel
Related Manuals for GESTRA LRGT 16-3n
Summary of Contents for GESTRA LRGT 16-3n
- Page 1 Conductivity Transmitter LRGT 16-3n LRGT 16-4n LRGT 17-3n Original Installation & Operating Manual 850878-01 E n g l i s h...
-
Page 2: Table Of Contents
Conductivity monitoring and continuous blowdown control via a separate level pot ........31 Key Fig. 11 to Fig. 13 ..........................32 Aligning the terminal box ..........................32 s ..........................33 Functional element LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... - Page 3 Cleaning the measuring electrodes of the conductivity transmitter ............52 Comparison of readings .......................... 52 Cleaning interval ............................52 Disposal ................................ 53 Returning decontaminated equipment ......................53 Declaration of Conformity; Standards and Directives ................. 53 LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01...
-
Page 4: Content Of This Manual
1 x sealing ring, D 33 x 39, form D, DIN 7603-2.4068, bright annealed ■ 1 x Installation & Operating Manual ■ Required accessories for LRGT 16-3n, LRGT 17-3n and LRGT 16-4n when installing for the first time 1 x cable jack, Phoenix Contact SACC-M12FS-5PL-SH ■... -
Page 5: How To Use This Manual
How to use this Manual This Installation & Operating Manual describes how to correctly use LRGT 16-3n, LRGT 16-4n and LRGT 17-3n conductivity transmitters. It applies to persons who integrate this equipment in control systems, install, bring into service, operate, maintain and dispose of this equipment. Anyone carrying out the above-mentioned activities must have read this Installation &... -
Page 6: Types Of Warning
Warning of a dangerous situation that may possibly result in death or serious injury. CAUTION Warning of a situation that may result in minor or moderate injury. ATTENTION Warning of a situation that results in damage to property or the environment. LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 7: Specialist Terms / Abbreviations
275 °C, for example, which is not necessarily its operating point. Usage for the intended purpose LRGT 16-3n, LRGT 16-4n and LRGT 17-3n conductivity transmitters can be used as conductivity limiters and continuous blowdown controllers to continually monitor conductivity in steam boiler and hot-water installations. -
Page 8: Improper Use
Do not use the equipment in potentially explosive atmospheres. Do not bring any equipment into service that does not have its own specific name plate. The name plate indicates the technical features of the equipment. LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 9: Basic Safety Information
When bringing the conductivity electrode into service, check that it is not leaking. ■ Attempts to repair the equipment will lead to non-availability of the system. The LRGT 1x-xn conductivity electrode may only be repaired by the manufacturer, GESTRA AG. ■ Only replace faulty equipment with identical equipment from GESTRA AG. -
Page 10: Required Personnel Qualifications
Persons trained by the plant operator to work Refits Specialist staff with pressure and temperature. Fig. 1 Notes on product liability The manufacturer cannot accept any liability for damages resulting from improper use of the equipment. LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 11: Function
4-20 mA current signal. Measuring process of the LRGT 16-3n and LRGT 17-3n LRGT 16-3n and LRGT 17-3n conductivity transmitters use the conductometric two-electrode measuring process. A measuring current with a suitable frequency for the measuring range is introduced into the fluid. - Page 12 Electrode faults cannot be acknowledged. When a fault is corrected, the message disappears from the display, and the LRGT 16-3n, LRGT 17-3n or LRGT 16-4n conductivity transmitter returns to normal operation. Behaviour when performing the test function * Initiating the test function by pressing the rotary knob on the LRGT 1x-xn causes the maximum output current of 20 mA to be output.
-
Page 13: Technical Data
Technical data Model and mechanical connection LRGT 16-3n, LRGT 16-4n, LRGT 17-3n Thread G1 A, EN ISO 228-1, see Fig. 6, 7 and 8 ■ Nominal pressure rating, admissible service pressure and temperature LRGT 16-3n PN 40 32 bar (g) at 238 °C ■... - Page 14 Safety cutout at excessive ambient temperature The cutout takes place at an excessive ambient temperature of Tamb. = 75 °C ■ Electrode voltage < 500 mV (RMS) at no load ■ LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01...
- Page 15 - 40 °C – 80 °C ■ Transport temperature: - 40 °C – 80 °C ■ Air humidity: 10% – 95%, non-condensing ■ Weight LRGT 16-3n, LRGT 16-4n, LRGT 17-3n approx. 2.1 kg ■ LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01...
-
Page 16: Example Name Plate/Identification
Conformity mark Disposal information Manufacturer Protection class Serial number Fig. 2 The date of production (quarter and year) is stamped on the screw-in body of each conductivity transmitter. LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... - Page 17 Disposal information Conformity mark Manufacturer Protection class Serial number Fig. 3 The date of production (quarter and year) is stamped on the screw-in body of each conductivity transmitter. LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01...
- Page 18 Disposal information Conformity mark Manufacturer Protection class Serial number Fig. 3 The date of production (quarter and year) is stamped on the screw-in body of each conductivity transmitter. LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01...
-
Page 19: Factory Settings
Sout parameter. If the parameter is set too high or is still at the factory setting (500 µS), the error E.002 may appear on the display if the conductivity of the fluid is low. Please check the parameter and adjust it if necessary. LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 20: Overall View
Overall view LRGT 16-3n LRGT 16-4n LRGT 17-3n Fig. 5 LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... - Page 21 Sealing ring D 33 x 39, form D, DIN 7603-2.4068, bright annealed Electrode thread Threaded pin M2.5 mm (LRGT 16-3n, LRGT 17-3n) Measuring tube with measuring electrode (LRGT 16-3n, LRGT 17-3n), measuring electrodes (LRGT 16-4n) Spacer disc LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01...
-
Page 22: Dimensions Of The Lrgt 16-3N
200 mm ■ 300 mm ■ 400 mm ■ 500 mm ■ 600 mm ■ 800 mm ■ 1000 mm ■ Fig. 6 All lengths and diameters in mm LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 23: Dimensions Of The Lrgt 16-4N
180 mm ■ 300 mm ■ 380 mm ■ 500 mm ■ 600 mm ■ 800 mm ■ 1000 mm ■ Fig. 7 All lengths and diameters in mm LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 24: Dimensions Of The Lrgt 17-3N
200 mm ■ 300 mm ■ 400 mm ■ 500 mm ■ 600 mm ■ 800 mm ■ 1000 mm ■ Fig. 8 All lengths and diameters in mm LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 25: Installation
Conductivity electrodes are extremely hot during operation. Always let the conductivity electrode cool down before performing installation and mainte- ■ nance work. Remove the conductivity electrode only when it has cooled down. ■ LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 26: Additional Notes For Installation
Provide spacing of approx. 60 mm between the lower end of the measuring tube and the ■ boiler wall, the smoke tubes and any other metallic fittings, and the low water level (LW). LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 27: Example Lrgt 16-3N
H. Sealing ring D 33 x 39 ◆ DIN 7603-2.4068, bright annealed Prohibited seal materials: Hemp, PTFE tape ■ Conductive paste or grease ■ Fig. 10 LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... - Page 28 (with size 41 open-ended spanner attachment). Tightening torque when cold: LRGT 16-3n, LRGT 16-4n, LRGT 17-3n = 250 Nm ■ Installation examples with dimensions, see Fig. 11, Fig. 12, Fig. 13 29 LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01...
-
Page 29: Installation Examples With Dimensions
* Minimum distances (R) LRGT 16-3n / LRGT 17-3n R = 30 mm ■ LRGT 16-4n R = 60 mm ■ Fig. 11 All lengths and diameters in mm LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 30: Conductivity Monitoring And Continuous Blowdown Control
A = 184 mm ■ ■ DN 25 mm A = 184 mm ■ DN 40 mm A = 189 mm ■ Fig. 12 All lengths and diameters in mm LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 31: Conductivity Monitoring And Continuous Blowdown Control Via A Separate Level Pot
DN 15 - 40 Inlet DN 15 - 40 Sealing ring D 33 x e.g. LRGT 16-3n 39 DIN 7603-2.4068, bright annealed Fig. 13 All lengths and diameters in mm LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 32: Key Fig. 11 To Fig. 13
If necessary, you can orientate the display in the desired direction by rotating the terminal box. ATTENTION Rotating the terminal box ≥ 180° will damage the conductivity transmitter’s internal wiring. Never rotate the terminal box more than 180 degrees in either direction. ■ LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 33: Functional Element S
Functional element Fig. 14 Terminal box Cover screws M4 x 16 mm Operating panel with 4-digit LCD/malfunction and status LEDs and rotary knob, see page 43 M12 connector, 5-pole, A-coded LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 34: Electrical Connection
Connecting the 24 V DC power supply LRGT 16-3n, LRGT 17-3n and LRGT 16-4n conductivity transmitters are supplied with 24 V DC. ■ A safety power supply unit that delivers a Safety Extra Low Voltage (SELV) and is isolated from con- ■... -
Page 35: Bringing Into Service
2.0 – 200 Maximum output load for actual 5.0 – 500 value output: 500 ohms. 10.0 – 1000 1000 20.0 – 2000 2000 60.0 – 6000 6000 LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... - Page 36 (“quit”) and the old parameter value is retained. Save your settings by pressing the rotary knob for approx. 1 second. The message “donE” is shown and the parameter appears on the display once more. LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01...
- Page 37 If numbers or decimal points are displayed incorrectly or not at all, you must replace the ■ conductivity transmitter with an identical one from GESTRA AG. Manually initiate a display test. Alternatively, initiate the display test by pressing “diSP”, see page 41. LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01...
-
Page 38: Changing The Cell Constant
Raising the “CF” value increases the display value. The display value will have become lower due to soiling. You can compensate for this by increasing the “CF” value, as described above in items 1 to 4. LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 39: Changing The Temperature Coefficient
Set the reference value you previously established (conductivity from the reference sample) as the new display value. Save your setting by pressing the rotary knob for approx. 1 second. LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 40: Using The "Filt" Feature
0.5 - 20, 100, 200, 500, 1000, 2000 or 6000 µS/cm ■ LRGT 16-4n: 50 - 3000, 5000, 7000 or 9999 µS/cm ■ Save your setting by pressing the rotary knob for approx. 1 second. LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 41: Changing The Display Unit (Μs/Cm Or Ppm)
Faulty equipment is a risk to system availability. If numbers or decimal points are displayed incorrectly or not at all, you must replace the ■ conductivity transmitter with an identical one from GESTRA AG. LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 42: Comparing The Reading With The Reference Reading From A Reliable Sample
“tC” until the indicated reading matches the reference reading. Also see the description of parameter “tC” on page 39. LRGT 1x-xn conductivity transmitters may only be repaired by the manufacturer, GESTRA AG. ■ Only replace faulty equipment with identical equipment from GESTRA AG. -
Page 43: Starting, Operation And Testing
Priority of error code display Higher priority error codes overwrite lower ones on the display! See page 47 ff. for fault indications and the error code table. LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... - Page 44 Electrode faults cannot be acknowledged. When a fault is corrected, the message disappears from the display, and the conductivity transmitter returns to normal operation. See the following page for more information and tables. LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01...
- Page 45 ■ faulty. Perform failure analysis. ■ LRGT 1x-xn conductivity transmitters may only be repaired by the manufacturer, GESTRA AG. ■ Only replace faulty equipment with identical equipment from GESTRA AG. ■ LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01...
-
Page 46: System Malfunctions
Check that the system is not carrying live voltage before commencing work. ■ If the current loop is open or has reversed polarity, error E.013 is shown on the display. ■ LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 47: Indication Of System Malfunctions Using Error Codes
Sout Comparison between 12-bit/16-bit parameter? Are the sensor tips soiled? (4-rod E.011 ADVTSTErr AD converter outside tolerance electrode, in particular) Remedy: Clean the sensor tips. Replace the conductivity transmitter LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... - Page 48 In this case, check that the installation shielding is correctly wired, and check the general EMC conditions before replacing the electrode. LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01...
-
Page 49: Errors That Do Not Provoke A Shutdown
The cell constant is excessively high after the “CAL” Remove the conductivity transmitter, ■ calibration process or manual readjustment see page 51. LRGT 1x-xn CF > 3.0 Check and clean the electrode, see page 52 ■ LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 50: Checking Installation And Function
In the event of malfunctions or errors that cannot be remedied with the aid of this Installation & Operating Manual, please contact our service centre or authorised agent in your country. LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 51: Taking Out Of Service/Disassembly
Reduce the boiler pressure to 0 bar. Allow the conductivity electrode to cool to room temperature. Switch off the supply voltage. Detach the plug-in connection. Next, remove the conductivity electrode. LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 52: Cleaning The Measuring Electrodes Of The Conductivity Transmitter
Compare the reading with the conductivity directly established from a reference measurement, see page 42. Check the equipment using the test function of the conductivity transmitter, see page 45. LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01... -
Page 53: Disposal
You can find details on the conformity of the equipment and the applicable standards and directives in the Declaration of Conformity and the relevant certificates. You can download the latest version of the Declaration of Conformity from www.gestra.com and re- quest relevant certificates by writing to the following address: GESTRA AG Münchener Straße 77... - Page 54 For your notes LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01...
- Page 55 For your notes LRGT 16-3n, 16-4n, 17-3n - Installation & Operating Manual - 850878-01...
- Page 56 You can find our authorised agents around the world at: www.gestra.com GESTRA AG Münchener Straße 77 UK Importer: 28215 Bremen GESTRA UK Ltd Germany Tel. +49 421 3503-0 Unit 1 Sopwith Park, Royce Close, +49 421 3503-393 West Portway Business Park, Andover, e-mail info@de.gestra.com...
Need help?
Do you have a question about the LRGT 16-3n and is the answer not in the manual?
Questions and answers