Vishay Instruments P-350A Level Meter
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Model:
P-350A
Date:
1973
Category:
Group:
Description:
Digital Strain Indicator
Information
The P-3.50A Digital Strain Indicator is designed primarily
for use with resistance-type strain gages or strain gage
devices to determine numerically the strain (and thus
stress) in a structure or the output of a transducer.
1.1 The P-350A employs the null-balance principle:
The operator must center a null galvanometer prior to
reading a mechanical digital display.
The instrument uses a 1000 Hz carrier; bridge excitation,
rebalance circuitry and the null Amplifier all operate at
this carrier frequency.
1.2 While the P-350A by itself will accept only one input
(quarter, half or full bridge), it can be used as the
central indicator for a multiple-channel static strain gage
data acquisition system when used with Switch and Balance
Units; each of the several inputs are manually selected in a
sequential manner to obtain the outputs of all channels.
1.3 The principal features of the P-350A are:
...Direct-reading in-line digital display, including
sign, to ±49 , 99 9ue .
...Built-in initial balance control so that the no-load
reading is 0000.
...Completely portable: lightweight and rugged, with both
self-contained battery and line operation possible with the
standard instrument. ...Built-in 120ft and 350ft dummies for
true quarter bridge operation.
...Wide-range Gage Factor control; 0.10 to 10.0 ...Internal
shunt-calibration to verify instrument calibration and
correct for lead-wire desensitation on quarter bridges, even
when the lead resistance is not known.
The P-350A supercedes the original P-350; normal operation
is identical although the following features have been added.
(a) 115 VAC option now standard.
(b) Internal shunt-calibration (5000]ie) on quarter bridges.
(c) On-off control on initial BALANCE.
(d) Improved bandpass on "Scope OUTPUT.
Manual type:
Service and User Manual
Pages:
42
Size:
3.94 Mbytes (4134655 Bytes)
Language:
english
Revision:
Manual ID:
Date:
1973 08 01
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
2017 01 08
MD5:
905426a9abed2859af5de7d914697ca5
Downloads:
574
Information
Instruction Manual