Summary of Contents for EsiWelma TUS40-20
- Page 1 EsiWelma s.r.l. HANDHELD TERMINAL FOR MONITORING AND SETTING UR.20.. SENSORS Terminal Unit TUS40-20 INSTRUCTION MANUAL Rev. Date Page Total pages Type / No. EW082.695_en 02 August 2010...
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Page 2: Table Of Contents
GENERAL ..............................3 ........................3 EANING OF SYMBOLS ......................3 AZARDOUS GAS THRESHOLD DESCRIPTION OF TERMINAL UNIT ....................5 INSTALLATION ............................8 TUS40-20 T NSTALLATION OF THE ERMINAL ...............8 ..........10 YPES OF DETECTOR INSTALLATION FOR CORRECT MONITORING USING THE TERMINAL UNIT ......................11 ..........................11 PERATING MODES ONITORING MODE ...........................12... -
Page 3: General
GENERAL This chapter provides some information on the characteristics of the gases and on the installation criteria for gas detection devices before the description of the TUS40-20 terminal unit. It is not essential to read this chapter to install and commission the terminal unit described in this manual. - Page 4 EsiWelma s.r.l. COHb in the bloodstream has the following effects on healthy adults. % COHb EFFECTS 0.3-0.7 Normal amount in non-smokers from the endogenous production of CO 0.7- 2.9 No detectable symptoms 2.9-4.5 Cardiovascular disorders in patients suffering from heart disease...
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Page 5: Description Of Terminal Unit
EsiWelma s.r.l. DESCRIPTION OF TERMINAL UNIT The TUS40-20 is a terminal unit for monitoring and setting the UR.20. sensors and consists of: theTUS40 handheld terminal the UIC20 junction card the 3m long CBL01 coiled cable the two units communicate through a dedicated master protocol. - Page 6 EsiWelma s.r.l. Under normal operating conditions (monitoring) the handheld terminal receives the information relating to measurements taken by the detector and the alarm status established by the threshold limit values. Three threshold limit values and one fail condition can be defined, and they are respectively called: •...
- Page 7 EsiWelma s.r.l. As you can see in the table below, the part number includes several fields for rapid identification in order to facilitate the choice of the detector according to the technical features described above: Sensing Element 2-terminal 3-terminal Semiconductor...
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Page 8: Installation
220x130 mm. Knurling at the sides of the keypad ensures an easy and secure grip. The TUS40-20 terminal unit must be connected with the sensor power off; follow product and/or installation instructions before opening the sensor cover. - Page 9 EsiWelma s.r.l. CN4 connection Fig. 3.2 – CN4 position Warning: Properly align the female and male CN4 connector with the PCB side of the UIC20 junction card to the outside of the main board of the sensor. Fig. 3.3 – TUS40 terminal plug-in operation Rev.
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Page 10: Types Of Detector Installation For Correct Monitoring
(1.5 - 2 m) to detect gases as heavy as air (CO) The TUS40-20 termination kit comes with a 3 m coiled cable so it can operate correctly even at a considerable height and distance from the sensor. -
Page 11: Using The Terminal Unit
Operating modes Only connect and disconnect the TUS40-20 junction box to and from the sensor if the sensor power is off, to avoid connection errors. This makes it possible to correctly activate communication between the two devices and their alignment. -
Page 12: Monitoring Mode
EsiWelma s.r.l. Monitoring mode At the end of the warm-phase, the sensor shows the following display: S e n s o r : T T T T T T T R e s i d u a l l i f e : S S S... -
Page 13: Setting Mode
EsiWelma s.r.l. Setting mode With the UR20, setting is possible after the warm-up phase is complete. Press the SETTING key to enter Setting Mode The following operations are possible in setting mode: 1) Setting the alarm threshold limit values (useable in custom mode) -
Page 14: Calibration Mode
EsiWelma s.r.l. Calibration mode The UR20 is calibrated by two measurement values. The first of the two values is always zero - no gas measured, make exception O that in free air has a concentration of 20,9%; the second is the factory-calibrated set point of: •... -
Page 15: Calibrating The Sensor
EsiWelma s.r.l. Calibrating the sensor Hold down the KEY button for at least 5 seconds to enter this phase from the setting mode. The display will show the following: 1 ) C a l i b r a t i o n... - Page 16 EsiWelma s.r.l. Two successive steps are required for calibration: • Calibrating the zero point ( clean air for toxic and flammable gas, nitrogen for poison gas such as CO • Calibrating the factory-set concentration (default: 50% LEL for explosive gases, 500...
- Page 17 EsiWelma s.r.l. Apply the gas to the sensor at the default concentration and wait for about 3 minutes for reading to stabilise the value on the third line of the display will stabilise. (WARNING: this is always an absolute value).
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Page 18: Output Test Mode
EsiWelma s.r.l. Output test mode During the warm-up phase only, enter the monitoring mode and press to access a menu where it is possible to directly test the outputs, or press to access the 4…20mA calibration procedure described in the relative paragraph. -
Page 19: M Asignal Calibration Mode
EsiWelma s.r.l. 4…20mA signal calibration mode To execute this type of calibration, it is necessary to insert in series to the 4...20mA output an instrument suitable for this magnitude and with a precision of at least 2% on the full scale. - Page 20 EsiWelma s.r.l. Press the key to memorise calibration; the display will show the previous display as confirmation that the new value has been saved: C a l i b . 4 - 2 0 m A : 4 m A...
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Page 21: Troubleshooting
Power supply connections Replace damaged unit units off inverted with 4...20mA output connections Lack of communication Positioning of the TUS40-20 Restore correct BUS connection between sensor and TUS40-20 junction card inverted or after powering off the sensor terminal unit misaligned Table 4.1 –... -
Page 22: Sensor Operation Check
LED status on the sensing element; this must be flashing as shown in table 4.2, according to the concentration level detected by the TUS40-20 terminal unit in the monitoring mode described above. -
Page 23: 4.10 Residual Life
4.10 Residual life The TUS40-20 terminal unit can display the residual operational lifetime of the sensor in weeks: in figure 4.3 is shown in the sensor monitoring section as Residual life. When the operational lifetime descends to zero, the sign becomes negative and the system continues to operate and count down the weeks of operational lifetime but of course there is no guarantee that the sensor is operating correctly. -
Page 24: Installation Data
EsiWelma s.r.l. INSTALLATION DATA Installer's stamp and To be filled in by Installer signature Installation site and/or room: Product order number: Part Number: Manufacturing date: DETECTORS Gas detected Position of detector Gas detected Position of detector Rev. Date Page Total pages Type / No. -
Page 25: Routine Checks
EsiWelma s.r.l. ROUTINE CHECKS To be filled in by Installer/Service Personnel Signature Date Description Rev. Date Page Total pages Type / No. EW082.695_en 02 August 2010... - Page 26 EsiWelma s.r.l. NOTES ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… Rev. Date Page Total pages Type / No. EW082.695_en 02 August 2010...
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- Page 28 EsiWelma s.r.l. Via F.lli Canepa 134D-E 16010 Serra Riccó (Genova) Italy Tel: +39 010 75421 1 Fax: +39 010 75421 78 e-mail: info@esiwelma.it Web: www.esiwelma.it...
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