Model 3770 DC STRAIN GAGE PANEL METER
3770
SPECIFICATIONS
Measurement Range: Adjustable; 0.5 to 10 mV/V; nominal full-scale. Dependent on Excitation level selected
Transducer Types: Conventional 4-arm strain gage bridges, 120 to 10 k ohm
Excitation: Selectable: 5.0 or 10.0 Vdc, with remote sense lines. Up to 70 mA.
Physical Parameters: 5.68” W x 2.84” H x 7.06” D; weight 3.25 Lbs.
Analog Output: selectable; ± 5, ± 10 Vdc, 4-20mA or 4-12-20mA (20% over-range on voltage outputs only)
Operating Temperature: 0 to +55 Degrees C, 5 to 95% relative humidity, non-condensing
Amplifier
Normal - Mode Range: ± 0.2 V RMS operating; ± 28 V without instrument damage
Common - Mode Range: ± 3 V
Input Impedance: Differential >10 MΩ
Offset:vs. Temperature: ±30 ppm µV/°C; vs. Time: ±10 ppm/month
Gain Accuracy: Limited only bycalibration accuracy
Gain Stability: vs. Temperature: ±30 ppm/°C; vs. Time: ±10ppm/month
Linearity:better than ± 0.03% offull scale
Filter: 3-pole modified Butterworth; 3 dB down at 2 Hz, 20 Hz or 200 Hz; selectable. Fast output
always enabled, 5 KHz response (J3 Pin 3).
Step-Response Settling Times for the 3770 (in milliseconds)
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
P
ANEL
M
OUNTING
You can easily mount the instrument in your own precut panel. Cutout dimensions for
a panel-mounted unit are standard
DIN
; panel thickness should not exceed 6 mm (0.24
in).Simply unscrew the two rear-panel CLAMP SCREWS and slide the CLAMP
SLIDES rearwards out of their grooves (THE FRONT BEZEL NEED NOT BE
REMOVED). Insert the unit through the panel cutout, from the front of the panel (if
the unit has rubber feet, these will have to be removed). Then reinstall the
CLAMP SLIDES, and tighten the CLAMP SCREWS until the instrument is securely
mounted.
Page 2
Power: 85 - 264 VAC @ 0.2 amps; 47 - 63 Hz
