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LAUREL MAGNA, Installation & Operating Manual, Page: 1 / 37

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1

Rear case screws - please note

The rear panel is held in place with finger-screws, which
only need to be gently tightened.

Do not use tools to tighten or loosen the screws, as
this could cause damage to the internal threads.

!

Caution:

 Risk of electrical shock if this instrument is not properly installed.

Caution:

 Read the whole manual before you install this display.

LAUREL Electronics,  Inc.

3183-G Airway Ave, Costa Mesa, CA 92626, USA
Tel +1 714-434-6131

Fax +1 714-434-3766

www.laurels.com

[email protected]

MAGNA 4-Digit Large-Digit

Temperature Indicator / Controller

Installation & Operating Manual

Summary of Contents for MAGNA

Page 1: ...age to the internal threads Caution Risk of electrical shock if this instrument is not properly installed Caution Read the whole manual before you install this display LAUREL Electronics Inc 3183 G Ai...

Page 2: ...RRANTY The foregoing warranty shall not apply to defects resulting from 1 Improper or inadequate maintenance by the buyer 2 Unauthorized modification or misuse 3 Operation outside the environmental sp...

Page 3: ...etical Calibration Decimal Point Scale 20 Theoretical Calibration Low End Calibration 21 Sensor Drift Correction 22 Logic Input Connection Front Buttons 23 Factory Defaults 24 Signal Filtering Averagi...

Page 4: ...V supply 2A for 110V supply 5A for 48VAC supply or 10A for 11 30VDC Don t touch any circuitry after you have connected the display because there may be lethal voltages on the circuit board Do not appl...

Page 5: ...hutdown periods you may have to to wait several weeks for an equivalent replacement or we may have no stock at the time you urgently need it You mayalso need to payextra carriage charges if you want a...

Page 6: ...very 10 meters of viewing distance required use 1 of digit height Options include 100 240 Vac or 11 30 Vdc power normal of daylight viewing display brightness wall mount suspension mount or panel moun...

Page 7: ...mm 1 8 to 1 4 When the outer nut is tightened by hand seals inside the gland are compressed against the cable thereby making a hermetic seal For power insert a 6 5 mm 1 4 diameter round power cable t...

Page 8: ...3 wire hookup the meter senses the com bined voltage drop across the RTD plus two excitation leads It also senses the voltage drop across one excitation lead and then subtracts twice this voltage fro...

Page 9: ...07 5mm 220mm OK dg W mm Cable Glands Number of glands depends on installed options H mm 25mm You can order these displays with the cable glands in the bottom surface as shown the rear or top Rear glan...

Page 10: ...6 4 digit numeric 520 246 580 550 8 4 digit numeric 690 290 750 720 You can order these displays with the cable glands in the bottom surface as shown the rear or top Rear glands allow you to mount the...

Page 11: ...it numeric 219 5 154 5 376 249 5 4 4 digit numeric 374 195 5 434 404 6 4 digit numeric 520 246 580 550 8 4 digit numeric 690 290 750 720 M8 x 15 bolt Spring washer Flat washer Wall Bracket M8 x 20 bol...

Page 12: ...nection and overload protection devices Circuit breaker Power E Inside the enclosure Outside the enclosure Warning Disconnect all power before removing the rear of the display There is a range of poss...

Page 13: ...ustment of the display s settings when the display is inaccessible You can also enable or disable the display s front panel buttons either by a remote contact closure or by an on board push on jumper...

Page 14: ...14 Temperature Display Connection Diagram...

Page 15: ...feeds inverters discharge lighting cables welding cables etc They should preferrably be routed in a dedicated low voltage signalling instrumentation conduit or cable tray 4 When using multi core scre...

Page 16: ...brightness at any time provided the display is locked Set1 Set2 Output Alarms Digit OK Max Min Reset Press for 3 seconds For 4 digits display shows Each press of the UP button selects a new brightness...

Page 17: ...nal level How to choose a calibration method Set1 Set2 Output Alarms Digit OK Max Min Reset Lockout Switch must be OFF Press 3 seconds Set1 Set2 Output Alarms Digit OK Max Min Reset Press to select di...

Page 18: ...followed by Press 3 seconds Set1 Set2 Output Alarms Digit OK Max Min Reset Apply the highest calibration signal you can achieve ideally 100 of system capacity You can use less but you will get better...

Page 19: ...ettings OK Max Min Reset Lockout Switch must be OFF Set1 Set2 Output Alarms Digit OK Max Min Reset Apply the lowest calibration signal you can achieve ideally 0 of system capacity Then press OK 1 For...

Page 20: ...and press OK when done Then use DIGIT to select each digit in turn and the UP or DOWN arrow to increase or decrease each digit s value as required eg set 100 0 if your display range is 0 to 100 0 Set1...

Page 21: ...not done so before please select Theoretical Calibration mode from the Meter Calibration page Done You can set Zero first if you prefer but you will not be able to change the decimal point position i...

Page 22: ...ity of your system and is only applied for readings less than 8 least significant counts The corrected value is stored in non volatile memory so that any drift trend will be re ap plied after you have...

Page 23: ...ak Valley and Reset buttons also Or simply link NPN could be opto isolators if you need the logic control lines to be galvanically isolated from the input signal Tares display to 0 Often used in weigh...

Page 24: ...ou want to check whether a display has been altered since it was last calibrated The calibration audit number ranges from to 4 digits allowing up to 255 alterations to be recorded Whenever you want to...

Page 25: ...includes an active filter for removing the effects of vibration It is shipped with the filter enabled for maximum stability You can move a push on jumper switch to change the filter response to maxim...

Page 26: ...er is less than 10 per con version Guidance For noisy systems increase the Filter Jump value up to a maximum of 99 Choose a value which gives a good compromise between filtering and response speed For...

Page 27: ...no rounding 2 5 10 20 or 50 Set1 Set2 Output Alarms Digit OK Max Min Reset Lockout Switch must be OFF Press 3 seconds Set1 Set2 Output Alarms Digit OK Max Min Reset For 4 digits press repeatedly until...

Page 28: ...gallons Changing weight units of measure from kg to pounds You could also use the SCALE to convert your readout from kg to pounds without affecting the calibration Simply set SCALE 2 205 and your mete...

Page 29: ...See the separate SCALE page for this feature Set1 Set2 Output Alarms Digit OK Max Min Reset Lockout Switch must be OFF Press 3 seconds Set1 Set2 Output Alarms Digit OK Max Min Reset Press repeatedly...

Page 30: ...rms Digit OK Max Min Reset Lockout Switch must be OFF Press together briefly Set1 Set2 Output Alarms Digit OK Max Min Reset Press repeatedly until you see XX 4 digits where XX is the delay in seconds...

Page 31: ...playing the number 876543 displaying the number 876543 Set1 Set2 Output Alarms Digit OK Max Min Reset Lockout Switch must be OFF Press together briefly Set1 Set2 Output Alarms Digit OK Max Min Reset P...

Page 32: ...power is applied 4 digits All segments illuminate permanently until a button is pressed 1 2 3 4 5 Set1 Set2 Output Alarms Digit OK Max Min Reset Lockout Switch must be OFF Press together briefly OFF C...

Page 33: ...than this the resistor has probably been overloaded and burned by having a voltage connected across it Please check your field wiring to en sure that no more than 30 mA or 1V can be applied to the cu...

Page 34: ...ltage 33 Ohms for current inputs Accuracy 0 05 of range Span tempco 25 ppm C Zero Tempco 30 ppm C 24V Excitation voltage 24 VDC nominal rated at 60mA 10V Excitation voltage 10 VDC nominal rated at 20m...

Page 35: ...f reading Span tempco 0 003 of reading C Zero tempco 0 03 deg deg Provision for user calibration Multiplier of RTD resistance plus offset in degrees Connection 2 3 or 4 wire Overvoltage protection 125...

Page 36: ...mpco 0 003 of reading C Reference junct accuracy 0 5 C 10 C to 40 C Input resistance 1 Gohm Input current 100 pA Max lead resistance 1 kohm max for rated accuracy Overvoltage protection 125 Vac NMR at...

Page 37: ...routed separately to power carrying cabling includes relay output wiring All signal cabling shall be screened The screen shall only be terminated to the power earth terminal at the meter end of the c...

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