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Model 3770        

DC STRAIN GAGE PANEL METER 

  

Controls

 

Analog Symmetry, + CAL, - CAL, TARE 

S Y M  

Symmetry - 

Adjust the negative gain slope for symmetrical analog adjustment and display 

reading with reference to the positive span value.  20 Turn potentiometer, with approx. ± 2% 
full scale authority 

+ C A L  

Positive  Calibration – 

Activates the SHUNT Positive by switching in the external or internal 

shunt calibration resistor across the Cal Sense and + Sense leads of the bridge.  

- C A L  

Negative  Calibration  – 

Activates the SHUNT Negative  by  switching in the external or 

internal shunt calibration resistor across the Cal Sense and - Sense leads of the bridge.  

TARE 

TARE - 

Push / Push switch. When enabled, offsets the present sensor signal input to "Zero". 

When activated, a green LED light will illuminate. During activation process, LED will light 
Yellow. If disabled, or out of range, LED will be RED. TARE maybe remotely activated via 
rear J1 connections. Front panel TARE can be disabled via J1 Pin 5connected to Logic 
Common, Pin 6. Maximum TARE capability is approx. 60% of full scale reading.

   

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Summary of Contents for 3770P

Page 1: ...MODEL 3770P DC STRAIN GAGE CONDITIONER SB 1 1 INSTRUCTION MANUAL 3700 Instrument Series...

Page 2: ...nto de este instrumento debe ser realizada por personal calificado solamente El C digo El ctrico Nacional define a una persona calificada como una que est familiarizada con la construcci n y operaci n...

Page 3: ...lektrische Sicherheitsauflagen f r Angestellt Arbeitspl tze ANSI NFPA 70E 2012 der Vereinigten Staaten und alle zus tzlichen Arbeitsplatzsicherheitsauflagen folgen die auf Ihre Installation anwendbar...

Page 4: ...ue el material aislante no tenga rajaduras Reemplace de inmediato cualquier parte defectuosa Mesures de S curit Les mesures de s curit suivantes doivent tre prises chaque fois qu un type de connexion...

Page 5: ...sein wenn Sie Anschl sse an den Stromkreisen durchf hren Stellen Sie sicher da das Ger t AUSgeschaltet ist bevor Sie an der r ckw rtigen Konsole Me f hler anschlie en Pr fen Sie vor jedem Gebrauch al...

Page 6: ...of the analog full scale signal The Model 3770 can be either calibrated by the two point dead weight process involving known input parameters or through the Shunt method using front panel push buttons...

Page 7: ...onds 3db Frequency To within 1 within 1 within 02 Fast Output 5000 Hz 0 14 0 10 0 08 Selectable Output 200 Hz 3 7 5 0 5 6 20 Hz 37 50 56 2 Hz 370 500 560 1 a PANEL MOUNTING You can easily mount the in...

Page 8: ...el Function J1 1 N C No connection J1 2 N C No connection J1 3 HOLD Input Analog Hold command J1 4 TARE Input Analog TARE command J1 5 TARE ENABLE External TARE enable input J1 6 LOGIC COM Logic Commo...

Page 9: ...nd a shorting wire in place of the external shunt resistor position This provides the electrical path for the Calibration Sense line to enable the sensor s internal shunt resistor when the or Shunt Ca...

Page 10: ...nnection is used when external control of the HOLD or TARE features of the unit are enabled and are controlled by an external switch PLC or relay The LOGIC COM signal is used to activate the analog HO...

Page 11: ...KHz Analog Voltage Output 5 Vdc or 10 Vdc with front panel selectable cutoff filter 2 20 200 Hz Analog Current Output 4 20mA 4 12 20mA at selected cutoff filter SIGNAL SIGNAL SIGNAL SIGNAL SIGNAL SIGN...

Page 12: ...elects Display Full Scale Range Range will equate to an analog output value of 5 Vdc or 10 Vdc per Analog Control switch placement Selection is set for 1 count in 5000 2 counts in 10000 and 5 counts i...

Page 13: ...range gain for 0 5 to 10 mV V sensors Display Span Adjustments Used to adjust the digital readout of the 3770 meter the user calibrates the analog output for a specific span value and then adjusts the...

Page 14: ...ion voltage The full scale analog output will be 5 000 Vdc The current output will be set for 4 ma zero and 20 ma will positive full scale The analog low pass filter will be set for 20 Hz Shunt calibr...

Page 15: ...nse leads of the bridge CAL Negative Calibration Activates the SHUNT Negative by switching in the external or internal shunt calibration resistor across the Cal Sense and Sense leads of the bridge TAR...

Page 16: ...t Note that changes in Span Gain will affect Zero Span and Zero re adjustments may need to be repeated to obtain the desired reading Note that the 3770 meter also has independent display adjustment ca...

Page 17: ...potentiometers fully CW Coarse is 22 turns Fine is 25 turns then reverse direction CCW Coarse 11 turns and Fine 13 turns to obtain mid authority of the controls Typically this is done on initial cali...

Page 18: ...scale analog output signal will be 5 VDC or 10 VDC as selected by the Analog Controls of the unit To accomplish the display adjustment change the user would first set the desired display range and dec...

Page 19: ...a factor of 2 Wide Span Position SPAN Low mV V SPAN High mV V 0 3 90 5 80 1 3 30 4 90 2 2 90 4 20 3 2 50 3 60 4 2 10 3 10 5 1 80 2 70 6 1 50 2 30 7 1 30 1 90 8 1 10 1 70 9 1 00 1 40 A 0 84 1 20 B 0 72...

Page 20: ...s When reassembling the fuseholder s make sure L and L are connected together and N and N labeled wires are connected together properly d Mate the rear panel to the enclosure and replace the clamp sli...

Page 21: ...cnico calificado para evaluar la condici n AVERTISSEMENT Ne remplacez pas le fusible une nouvelle fois si la d faillance se r p te Une d faillance r p t e indique une condition d fectueuse qui ne dis...

Page 22: ...hase price to the Buyer ANY PRODUCT FOUND TO BE DAMAGED THROUGH CUSTOMER NEGLIGENCE OR MISUSE MAY BE EXCLUDED FROM ANY AND ALL POLICIES CONTAINED IN THIS DOCUMENT ALL EQUIPMENT TO BE REPAIRED OR REPLA...

Page 23: ...3700 SERIES P Option ANALOG PEAK CAPTURE INSTRUCTION MANUAL 3700 Instrument Series...

Page 24: ...3700 SERIES P Option ANALOG PEAK CAPTURE INSTRUCTION MANUAL 3700 P Option Instruction Manual v A 01 Issued 07 15 Daytronic Corporation Dayton OH Tel 800 668 4745 www daytronic com...

Page 25: ...d in figure 1 Dip switch configuration enables various features front panel TARE push button function Peak Mode selection Analog signal source of either the Fast or Select signal from the main 3700 un...

Page 26: ...Signal SELECT Analog Signal low pass filtered selected per main analog controls of the 3700 base unit 2 3 4 LIVE display 5 Front Panel TARE normal operation 6 Standard Run Time Operation 7 1 Full Sca...

Page 27: ...ear Peak Pin 2 false not grounded 4 LOGIC COMMON Common for Logic signal activation 5 DISPLAY LIVE or PEAK Reading 6 FRONT PANEL TARE for Display of PEAK or LIVE signal Input Logic Signal to use the f...

Page 28: ...he TARE switch is depressed the meter will be in track mode following the input signal amplitude When the TARE switch is released outward position the meter is armed and ready to capture the Peak as c...

Page 29: ...er operation of the measurement capture and resetting process of the PEAK Mode function Display Source and Front Panel TARE button mode of operationl are available to provide remote control enabling o...

Page 30: ...ude of the measurement within the positive quadrant of the signal Switch 2 UP Switch 3 UP PEAK Mode captures and holds the most negative signal amplitude of the measurement within the negative quadran...

Page 31: ...ng in an absolute analog output signal Switch 2 UP Switch 3 DOWN TIR Mode captures and holds the most positive signal and the most negative signal amplitude in the positive quadrant of the measurement...

Page 32: ...cts the amplitude of the delta between the live signal and the detection of a Peak value which has occured Sometimes referred to as Backout as shown in the circle graphics below This level sets the re...

Page 33: ...a stand alone meter with the local operator providing the Peak Reset as mentioned in step 3 then Switch 4 should be DOWN for PEAK display operation Remote control of the display can also be done via t...

Page 34: ...pture cycle rate amplitude of the analog signal and the wave shape of the signal being monitored Below are the leak rate values as expressed in percent of full scale using defined parameters of a sing...

Page 35: ...Page left blank Page 11...

Page 36: ...No part of this document may be reprinted reproduced or used in any form or by any electronic mechanical or other means including photocopying and recording or in any information storage and retrieval...

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