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Operating Manual
Description
The Model 140 is a remote in-line DC amplifier designed to be used with bridge-type mV output
transducers. The amplifier features five user selectable gain settings with a gain accuracy of ±0.5% and
offers a wide bandwidth to 100kHz. The model 140 offers a patent pending Auto-Zero function that
allows the operator to zero the transducer offset voltage to within ±1.5mV.
Specifications
Dynamic
Input Type
Input Range (V)
User Selectable Gain Settings
Bandwidth (-3dB)
Noise (nV/√Hz)
Zero Output After Auto-Zero Actuation
Input Range Limit for Auto-Zero Function ±10Volts/gain
Electrical
Excitation Voltage (Vdc)
Reverse Polarity Protection
Quiescent Current (mA)
Reference Out (Vdc)
Output Voltage Limit (Vpk)
Gain Accuracy (%)
Output Impedance (Ω)
Insulation Resistance (MΩ)
Environmental
Operating Temperature (°C)
Storage Temperature (°C)
Environmental Protection
Vibration (g)
Shock (g)
Physical
Case Material
Electrical Connector, Input
Electrical Connector, Output
Weight (grams)
1
Auto-zero can be actuated using pushbutton or grounding remote auto-zero pin for minimum 2 sec.
Multiple actuations may be required to achieve the ±1.5mV limit.
Measurement Specialties, Inc.
32 Journey, Suite 150, Aliso Viejo, CA 92656 USA
Differential
0.5 to (Vexc – 0.6), each input referenced to ground
x10, x25, x50, x100, x200
DC to 100kHz
17 RTI + 2000 RTO
1
±1.5mV, referenced to 2.5V reference out
5 to 30
-20V, on excitation line
15
2.50 ±0.05, referenced to ground
±2, referenced to 2.5V reference out
0.5
<50
>100 @ 50Vdc
0 to 50
0 to 50
IP50
20 pk from 50Hz to 2000Hz
2000 pk with 3.6ms Haversine pulse
Anodized Aluminum
Binder Connector P/N 09-0098-00-05
(mates with Binder Connector P/N 99-0095-100-05)
Binder Connector P/N 09-0098-00-05
(mates with Binder Connector P/N 99-0095-100-05)
33
www.meas-spec.com
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TM
+1 949-716-5377
t&m@meas-spec.com
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