datafromSIGNALS OBSCURED BY NOISE The NEW LOCK-IN AMPLIFIER
Recover useful
or BACK GROUND DRIFT
from 3 cps to 100 kc — time constants
.003 sec. to 30 sec.
Includes all the features that make it the truly universal coherent detector. The E M C Model R J B Lock-In provides the user with a regularly manufactured laboratory instrument. Based on the widely accepted design of R. J. Blume, this equipment provides all the required functions of a complete narrow banding system; including: selective amplifiers—phase detector—filter—meter—recorder driver circuits.
REFERENCE
• Full monitoring of signal and reference • Self-contained regulated power supply
CHANNEL
• Accepts any input waveform • Phase shift with approximate calibration • Fundamental or 2nd harmonic ("2nd derivative") operation selectable by front panel switch OUTPUT
TECHNICAL FEATURES SIGNAL CHANNEL • Internal notch rejection filtering of an unwanted input signal • Overload indicator • Precision step attenuators, decade and log interpolation • Three switch — selected plug-in tuning networks. QOO20 • Reference pick-off permits gain calibration
SIMPLIFIED BLOCK SIGNAI, INWJT I
CIRCUIT
• Internal time constants - .003 sec. to 30 sec. • Outputs for all standard recorders including separate zero for .non-adjustable potentiometric types • Servo output • Zero suppression up to 5 times full scale • Pen marker circuit activated by momentary front panel switch • On-off switch for recorders
REFERENCE INPUT Γ ~ ~ REFERENCE CHANNEL
10
Important
MEASUREMENT AND CONTROL
Completely constructed of inert materials, " PYREX ( R ) B R A N D c o m p o n e n t s , VYCOR ( R ) b r a n d i m m e r s i o n h e a t e r , n e w PYREX ( R ) b r a n d 1:5 T e f l o n ( R ) p l u g s t o p c o c k : a b s e n c e of heavy metal c o n t a m i n a n t s .
2
C o m p l e t e v i s i b i l i t y o f a l l glass p a r t s f o r e a s e in " troubleshooting.
3 J
Ultra-pure glass-distilled water, " extremely low. Easily d r a i n e d a n d c l e a n e d ; placed.
conductivity
p a r t s easily r e -
ς
STILL
C F l e x i b l e — c a p a b l e of p e r f o r m i n g s i n g l e d i s u " f i l i a t i o n in o n e p a s s f r o m t a p w a t e r , y e t q u i c k l y a d a p t a b l e t o operation as t h e second stage t o a double distillation system. 7 A u t o m a t i c o p e r a t i o n . T h e r m o s t a t i c protec' " t i o n of a p p a r a t u s f r o m o v e r h e a t i n g . 0 Includes electrical control box which reduces " " t h e r m o s t a t v o l t a g e t o 12 v o l t s , s h u t s o f f p o w e r t o i m m e r s i o n h e a t e r if w a t e r d r o p s b e l o w proper operating level. Q C o m p l e t e l y s e l f - c o n t a i n e d ; all c o m p o n e n t s necessary for operation are m o u n t e d within a painted steel cabinet. i nw C o n t i n u o u s r e m o v a l o f v o l a t i l e s t h r o u g h w e l l " designed venting system.
P r o d u c e s P y r o g e n Free w a t e r ; t e s t s c o n " d u c t e d in accordance with U.S.P. XVI. ORDER N O W ! C a t . N o . A 54685—Net w e i g h t — 6 0 l b s . ( i n c l u d i n g c a b i n e t ) . S h i p p i n g w e i g h t a p p r o x . 120 l b s . 44" h i g h , 17" w i d e , 12" d e e p . 220-250 v o l t s A . C . , 15 A m p s Each $495.00 ACCESSORIES C a t . N o . A54685A—Removable i n s u l a t e d P o l y u r e t h a n e j a c k e t ( f o r e v a p o r a t o r ) f o r i n c r e a s e d e f f i c i e n c y J
Each
$4.60
C a t . N o . A54685B—Adapter k i t f o r d o u b l e d i s t i l l a t i o n — c o n s i s t i n g of t h r e e g l a s s c o n n e c t i n g t u b e s Each $16.50
Bulletin SB270 On Request
STANDARD
SCIENTIFIC
Supply Corp.
LABORATORY
APPARATUS
808 BROADWAY NEW YORK 3, N Y
REAGENTS
AND
CHEMICALS
·
ANALYTICAL CHEMISTRY
75th
4nniVersarjr Year
Circle No. 119 on Readers' Service Card 134 A
INC.
DIVISION
160 EAST THIRD STREET - MOUNT VERNON, NY. 10550 · 914-668-3012
Features:
1 x
Λ
ALL GLASS
AND
COMMUNICATIONS,
NEW! QUICK! EASY! TdWia Pute DISTILLED WATER
CORNING
PANEL METE*
VTVM
ELECTRONICS,
Circle No. 201 on Readers' Service Card
WITH THE
BC FILTER
PHASE OETECTOR
MISSILES
low drift dc amplifier types
• Regulated dc on all critical heaters
TO RÎCORDERS
For cvInpitU „to
