of 6
8/11/2019 MicroTenn II Brochure
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L CA
D
ACCESS
OPERATE
c m
P R OGR A MME R
UT
IRE
EXT
.
T O G
POINT VENTS
I E P E A T S
TEP
RIS
ACTUAL
EV R
ESET
EV
O NE
7
LARM
CON 1 OLLE
TT
YAWS
ORLON
C
C
WAR
Bulletin #137F
icroTenn
r
Voor
.,
Micro
yt
For Totally Automatic Environmental Testing
FEATURING
.
RS-232 or IEEE-488
compatability
. Comm and C artr idge
memory system
.
A djustable Hi-Lo w
Temperature Cut out
.
Propo rtional controllers
.
Battery backup
. Deviation alarm
.
LCD display
.
Touch sensit ive keyboard
. Up to 51 programmable
steps
. Self diagnostics
Guaranteed soak
he Larges t and Mos t Exper i enced Manu f ac t urer o f Hi gh Techno l ogy Env i ronment a l Tes t Equ i pment
1090 Spr i ng f i e ld R d . , P . O. Box 3142 , Un i on , New Jers ey
07083 201)
5S 7070
8/11/2019 MicroTenn II Brochure
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KEY LOCK
SWITCH
CHANNEL #
-- TEMPERATURE
SETPOINT
IN DEGREES C
[F
EQUENTIAL
STEP
PROGRAMMING
KEYBOARD
COMMAND
CARTRIDGE
viicrei e
D 5 Y
LCD
DISPLAY
CONTROLLER
MONITORING
E
F
RS-232
PORT
5 YEAR
BATTERY
BACK-UP
AUTO RESTART,
GUARANTEED SOAK,
RS-232 AND MANUAL
OUTPUT SELECT
SWITCHES
Micro
000 II
More Than Just Another Digital Programmer
Tenneys new MicroTenn is a unique microprocessor based
programmer/controller system. This system was designed by
Tenney to provide fully automatic environmental testing, when
used in conjunction with our latest line of standard and cus-
tom environmental chambers.
Programming and operation of the MicroTenn are via the
touch sensitive keyboard. Once verified, programs may be
stored and easily retrieved using the command cartridge. Com-
plex military, pharmaceutical and commercial environmental
test profiles up to 51 steps long are entered into the Micro-
Tenn in minutes and then run automatically without supervi-
sion. Included in the MicroTenn programming capability are
eight event control circuit& Event circuits may be used to
automatically energize such items as the test specimen,
shakers, vibrators, or CO
injection systems, during specific
steps of the test program.
A standard safety feature of the MicroTenn is the adjustable
Hi-Low temperature cut-out system, which will automatically
shut down the chamber if preset temperature limits are
exceeded.
The MicroTenn is available in the single channel version for
controlling temperature profiles only, and two channel for
simultaneous control of temperature/humidity or tempera-
ture/altitude program profile&
The system has an optional RS-232 or IEEE-488 talk/listen
interface port to allow the MicroTenn to be controlled by a
remote computer.
Contact Tenney Engineering or your local Tenney rep-
resentative to arrange for a MicroTenn demonstration.
Features
FRONT VIEW EAR VIEW
8/11/2019 MicroTenn II Brochure
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M
icr
ei
4
OT
II
CA
MP
P
ROP P YER
0
0
4
CTUA
L E
:
ES
.
SET
URA.
CO,TROLLER
Ser
EA1
OG
POIN
T
VENTS
IME EPEATS
EP
AME
Re
peat entire
profile 5
times
4
40'C
.80%
_
Repea
t step #4
7
10
times
5
Re
peat *6
2 times
+55'
C
+40`C
+30
'C
+25
C
+0C
- 30 C
2
30
C
50% RH
ON - OF F STATUS
OF A
LL RELA
Y
M O DU
LES IS A
VAILAB
LE
FRO
MFRON
TPANEL
OF
MIC
R OT E NN
SOL ID ST AT E
SW I
TCHING
MO DU L
ES
W ITH L
ED ON
IN DIC
AT ORS
MI CRO T
E NNIE
NS T
R UME NT
ATION
LI N
EFILTE
R
ST
EP
Op
erator
enters
the firs
t step#
of his
progra
m
profile.
(51 ste
pspos
sible.)
SET
POINT
S
Op
erator
digitall
y enter
s setpo
ints (t
em-
peratur
e and h
umidit
y).
EV
ENTS
Inth
is prog
ramm
ing mo
de the
operat
or may
energiz
e any
one or
all of
the 8 e
vent c
ontrol c
ircuits
. If an
ev
ent isp
rogram
med O
N dur
ing as
tep, it w
ill ene
rgizeat
the
start o
f the s
tep, an
drema
in on d
uring th
e entir
estep.
These
eve
nt con
trol cir
cuits, w
henco
nnect
ed toth
e optio
nalev
ent
relay b
oard, c
an be
used to
control powerON - OFF to the
units
under
test or
other
device
s duri
ng spe
cific s
teps o
f
the pr
ogram.
TIM
E R
amp an
d hold
times fo
r each
step a
re enter
ed dur-
i
ng this
mode.
Timeis
entere
d in ho
urs, mi
nutes,
and sec
onds.
The firs
t step o
f thes
ample p
rogram
hasa
ramp t
ime of
1 hour
entered
as Hr
. min. s
ec./01
. 00. 00
..
M
aximu
m ram
p or h
oldtim
e allow
edin
each s
tepis
18
h
ours. I
f longe
r times
are re
quired
additio
nal ste
ps usin
g the
sam
e setp
oints m
ay be
added.
The M
croTen
n can a
lso be
pro-
gra
mmed
to rep
eat ste
ps a s
pecific
numb
er of ti
mes to
in-
cr
ease h
old tim
es (see
repea
ts).
REP
EATS
Dur
ing this
progr
ammin
g mode
the op
erator
may
enter
the nu
mber o
frepe
ats he
wishes
aspe
cific st
ep
num
ber, o
r the en
tire pro
gram,
torepe
at. The
maxim
um nu
m-
ber o
frepe
ats for
each s
tep is
15; ho
wever,
loop n
esting
is
p
ossible
as sh
own.
4
0
1 12
TIME
INHOU
RS
NE
XT ST
EP
T
he ope
ratorn
ow ente
rs the
next ste
p num
-
ber
or the s
tep nu
mber f
or loop
back.
Once
the ab
ove
isted
param
eters f
or each
step o
f the p
ro-
gr
am pro
file hav
ebeen
entere
d, the
MicroT
enn pr
ogramm
ing
s
comp
lete. T
heope
rator n
owpre
sses t
he AU
TO an
d the
RU
N swit
ches, a
nd the
chamb
er will
autom
atically
track t
he
p
rogram
profile
.
8/11/2019 MicroTenn II Brochure
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Sa
fP
tlf
r
an
tu
ra
Q
3
PO
SITI
ON K
EY
LOC
K S
WIT
CH
P
reve
nts u
nau
thor
-
iz
edp
erso
nnel
from
ga
inin
g ac
cess
top
rogr
amp
rofi
les.
FU
LLA
CC
ESS
In
this
pos
ition
the
oper
ator
may
ent
eror
chan
ge p
rogr
ams
in t
he M
icro
Ten
n RA
M.
O
PER
AT
EPO
SIT
ION
In
the o
per
ate p
osit
ion,
the
oper
-
ator
may
run
the
cham
ber
, rev
iew
prog
ram
s in
the
RAM
an
d
m
onit
or a
ctua
l cha
mb
er co
ndi
tions
. He
ma
y no
t, h
owe
ver,
alter the program profile.
LO
CK O
UT
In th
e loc
k-ou
t po
sitio
n, th
e fro
nt ke
yb
lo
cke
d ou
t. Th
e sy
stem
ca
n no
w b
e co
ntro
lled
bya
r
com
pute
r,vi
a the
opt
iona
l RS
-23
2 co
mmu
nica
tion
po
ADJ
UST
ABL
EH
I LO
WL
IMI
T AL
ARM
T
his
feat
low
s th
e op
erato
r to
seti
n m
axim
um
High
and
Lo
w te
m
tur
elim
its
for t
he c
ham
ber.
Sho
uld
these
lim
its b
e en
e
the c
ham
ber
will
auto
ma
tical
ly sh
ut d
own
,en
ergiz
ing
andvisualalarms.
+55
C -
H
i Lim
it Set
for5
0
Max
.
H
i
L
imit-
210
C)
+4
0C -
4
0C
80
% RH
Pro
gram
Profil
e show
n wi
th
+30
C -
3
0C
H
i Lim
it se
t for 5
0C
0
C
50%
RH
L
ow Li
mit s
et for
-30C
0% R
H
+2
5 C
+0
C
-25
C
-30
Low L
imit S
et fo
r-30C
M
ax Lo
wLim
it
100
C)
TIM
E IN
HOUR
S
M
i
c
r
o
o
ll
io
I
I
p
er
at
ion
a
n
dP
r
og
ra
m
m
in
g
ar
eE
a
Pa
ram
eter
s suc
h a
s tim
e,te
mp
eratu
re,
and
hum
idit
y are
enteredintotheMicroTenn
in
dire
ct te
rms
, tim
e in
hou
rs,
m
inut
es, a
nd s
econ
ds;
temp
era
ture
ind
egre
esC
, and
hum
id-
i
tyin
%r
elati
vehu
mid
ity.
The
Micr
oTe
nn
i
sca
pabl
eof
con-
tro
llin
g tem
per
atur
e fro
m
100
C
to +2
00
C or
1
00C
to
+
500
C
on a
ppro
pria
te c
ham
ber
s.Th
era
nge
of h
um
idity
,
a
ltitu
deo
r lin
earp
roce
ssc
ontr
ol is
from
0-
100
.
MA
NUA
L S
ETP
OIN
TO
PER
ATI
ON
To o
pera
te a
Mic
roTe
nn e
quip
ped
cha
mbe
rin t
he M
AN
UAL
SET
PO
INT
MO
DE,
the
oper
ator
first
pres
ses
the
MA
NUA
L
SET
POI
NT'
swi
tcho
n th
e ke
yboa
rd,
then
digi
tally
ent
erst
he
s
etpo
ints
for
temp
erat
ure,
hum
idi
ty or
alti
tude
. On
cet
hese
set
poin
tsa
ree
nter
ed,
the
ope
rato
r si
mpl
yp
ress
esth
e
AUTO switch, and the systemautomatically selectsthepro
-
per c
ham
ber
func
tion
(he
ating
,re
frige
ratio
n, h
umi
dity
,
req
uire
d to
rea
ch a
nd m
aint
ain
setpo
int
valu
es.
PR
OG
RAM
MIN
G
Pro
gra
mmi
ng a
Mic
roT
enn
equ
ippe
d ch
amb
erto
run
pl
ex p
rog
ram
prof
iles
is a
lso v
ery
eas
y. F
irst t
he o
pe
dra
ws o
ut t
ime
vs. t
emp
erat
ure/h
um
idity
/alti
tude
pro
fil
sho
wn b
elow
. H
e the
nse
que
ntial
lya
ssign
sst
epn
umb
e
eac
h ra
mp
and h
old
.No
te: th
e M
icroT
enn
can
acc
ept p
ro
p
rofi
les u
pto
51 s
teps
lon
g.
To
ent
erth
e pro
gra
m pr
ofile
sho
wnb
elow
int
o the
Mic
roT
the o
pera
tor n
ow
pres
ses t
he P
RO
G s
witc
h. T
he M
icro
wil
l the
n ad
vise
the
oper
ator
tos
eque
ntia
lly e
nter
thef
o
i
ngd
ataf
or e
achs
tep
of hi
s pr
ogra
m pr
ofile
.
6 -2
5'C
+55
C -
+40
C -
+30C
-
+
25C
+0
C-
2
30'C
0
% RH
8
30C
50%
RH
T
IME I
N HO
URS
~
2
-
30C
-
8/11/2019 MicroTenn II Brochure
5/6
Sta
ndard
M
icro Go
o
Featur
es
P
ROPORTIONAL
CONTROLLERS
The te
mperature,
hu
midity and linear
process controll
ers built into the
Mic-
roTenn
are accurate 2 mo
de time proportio
ning units; these
controllers rec
eive digital setpo
int information fr
om the pro-
g
rammer, and com
pare it to the act
ual chamber con
ditions.
Each c
ontroller then ene
rgizes the proper
heat,refrigeratio
n
o
r humidity system
that will minimiz
e or eliminate de
viations
from setpoint
Controller output
s are proportional
for all para-
meters. F
or example, the t
emperature contr
oller will apply
heat in proport
ion tothe deviatio
n from setpoint T
he farther
the act
ual chamber tem
perature isfrom s
etpoint, the mor
e
heat i
s applied.
Advantages of
bidirectional pro
portional control
lers are
smoother transiti
on from heating t
o cooling modes,
a reduc-
tion in te
mperatureoversh
oot, and conserv
ation of energy
required
for chamber con
ditioning.
CO
MMAND CART
RIDGE
Store
s customer test p
ro-
grams
, up tosix progr
ams (three per si
de) of 51 segmen
ts
each
. The control valu
es of the proportio
nal band, reset, d
evia-
tion set, and high/low limits can be storedfor eachprogram.
Stored prog
rams can be easil
y recalled for use
, modification
or
deletion.
EVE
NTS
T
woevents are sup
plied for custom
eruse.
SELF DIAGNOS
TIC SYSTEM
D
uring initial powe
r up,
the
MicroTenn runs
its own self-diag
nostic test progra
m. A
nu
mbered message w
ill appear indicat
ing an error ora n
ormal
system start u
p message. Theop
erator is always s
ure the sys-
tem is o
perational before
he attempts to r
unprograms.
BAT
TERY BACK UP
Th
e battery back-up
system is
designe
dto retain the Mic
roTenn RAM mem
oryfor5 years, in t
he
eventof power failure. The back-up systemhas a switch select-
able
Auto Restart fe
aturewhich, whe
n selected, will a
uto-
matically
return the cham
ber to the step
,
s
tep time, and
temperature
/humidity condit
ions that were pre
sent when the
power faile
d, and complete th
e program profil
e.
LCD DISPLAY
The clear LC
D displayserve
s severa
useful fu
nctions, depend
ing on the mode
of operation the
MicroTenn is in.
PROG
RAM MODE
During pro
gramming, the op
erato
uses the
LCD display to
indicate step #
,setpoints
events,time,
etc. He mayalso
review the entire
program
onthe LCD
displaybefore r
unning iton the c
hamber.
B
CO
NTROLLER MOD
EDuring
this mod
e the operato
may use
the display to rev
iew the following
:
1
Actual
chamber tempera
ture, humidity, or
altitude.
2
Deviation from
setpoint for anyo
f the above para
-
meters.
3
Pr
oportional band,
and reset for each
controller (note
P.B. and
Reset are operato
r adjustable).
4
Deviation set
5
Hi-Low safetyalarm setpoints.
The LCD canbe
used to display t
ime of day, andw
hile pro
grams
are running, time
intostep, and tot
al program runnin
g
time is a
vailable.
DEVIATION SET
Acceptable devia
tionfrom tempera
ture
setpoint ma
ybe keyed into t
hecontroller. Sh
ould the actua
chamber te
mperature shift a
bove or below th
is preset value
the d
eviation relay wi
ll energize. This r
elay closure can t
hen
be use
d to ring a bell, s
hut downthe tes
t, or perform som
e
oth
er appropriate fu
nction.
Examp
le - The program
profile shown be
low has a 5C
deviation programmed in:
Temp/Profile shown
with 5C deviation
40C
+55C -
+40 C
-
+30 C -
+25 C
+0 C-
- 30'C-
TIME IN
HOURS
I
0
Note:
The deviation is
adjustable from
0.01 to 300C.
With the devi
ation set, the oper
ator is assured th
at required
Ramp and
Hold tempera
tures are being t
racked bythe
chamber.
Anoth
er use for the DE
VIATION SET' c
ircuit is to initiate
and control a G
UARANTEED S
OAK period, as m
ay be speci-
fi
ed by various test
s. When used in t
his manner,the pr
ogram
time clock is held Off until actual chamber temperature is
within the ac
ceptable deviatio
n limits. When th
is occurs, the
pr
ogram HOLD is
released and the G
UARANTEED S
OAK
pe
riod begins.
24 HOUR MILIT
ARY TIME CLOC
K
Eliminates t
he ambi-
guity and inco
nvenience ofente
ring or reading t
ime in am.
and p.m.units
. The crystal contr
olled time base a
ccuracy is
.00
5%. (Note: May
be programmed t
o perform an auto
matic
timeof day star
t.)
8/11/2019 MicroTenn II Brochure
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8 EVENTS FOR
OPERATOR USE
- 2
-
- 4
-
5
- 6
-
7
-
8
ENGINEERING INC.
1090 Springfield Rd., Union, New Jersey 07083
(201) 686-7870
RS-232 COMPUTER INTERFACE
The basic option consists of an RS-232 port, operational circuitry and a special software
configuration. A host computer dedicated to the unit may then communicate with the MicroTenn. The computer can perform all
operating functions, including entering setpoints, events, programs, etc., that may be performed via the keyboard. Actual chamber
conditions and other controller parameters may be transmitted from the MicroTenn to the computer upon demand.
IEEE-488 COMPUTER INTERFACE
A MicroTenn can be operated from an IEEE-488 via an optional parallel-to-serial con-
verter. The converter allows communication via the RS-232 port system as described above.
CHART RECORDERS
A.
Single pen 12 circular recorder for temperature recording. (Charts are calibrated in C.)
B.
2 pen 12 circular recorder for recording temperature and humidity. (Charts are calibrated in C and % RH.)
. 32
COLUMN PRINTER
Prints out the following data on demand, at pre-programmed time intervals of 1-99 minutes, or
automatically in the event of any alarm condition.
A.
Time
E
Deviation from temperature setpoint
B.
Date
F
Hi and low alarm setpoints
C.
Program I.D. #
G.
Deviation condition
D .
Actual chamber temperature/humidity or altitude
H .
Proportional band settings
12 BLACK AND WHITE CRT
Displays same information as printer.
EVENT RELAY BOARD In
addition to two standard events, an additional six 1 amp 120-230 VAC triac switches, with LED
indicators
to show
ON condition are available. These units are installed behind the hinged chamber instrument control panel, for
easy access.
The event triacs
are connected to and controlled by the MicroTenn
event programming mode. With this option, an
external connector is provided for all eight events.
.
SECOND LINEAR CHANNEL Allows the MicroTenn to control other functions such as altitude or any other linear functions.
Programming and read out for altitude can be directly in feet up to 100,000 feet, in millimeters of mercury or millibars (to
customer specs).
.
ADDITIONAL COMMAND CARTRIDGES
For additional program capability.
INPUTS
OUTPUTS
MicniliOa2Y
II
1.
LOGIC INPUTS
2.
1000 PLATINUM SENSOR
FOR TEMPERATURE
CONTROL
3. WET BULB/DRY BULB
SENSOR FOR HUMIDITY >
TYPE "E" TC
CONTROL
RS-232 COMMUNICATION
PORT
NOTE ONLY ONE OF THE FOLLOWING
OPTIONS MAY BE PROVIDED
OPTIONAL
HOST
EEE-488 COMPUTER
COMPUTER
NTERFACE
OR H OS T
COMPUTER
RS-232
OR PRINTER/CRT
PRINTER FORMAT
TOTAL PROG TIME =
12:36:10
PRO FILE ID* = 999
2.0 00.2
40.0 00.3
.0
100 .0
300.0
PB RESET D-ALM L-ALM H-ALM
2
0% 000 .2% 000 .0
1
5.3C 00.4C 001.1
CH ACTUAL DEV OU1
,11, ALM
00:01:22
7 /14 /82
D E M N D L O G
9L
zIavare
-
p
r -010. 01 . 1 . 11
777
7 4 ;
411 11 1111 411 11 0
7 7
WO
nc
U
O
a
OPTIONAL EVENT
RELAY MODULE
HEATING CONTROL
REFRIGERATION CONTROL
HUMIDIFY CONTROL
DEHUMIDIFY CONTROL
CHART RECORDER
In line with our policy of continual product improvements, Tenney Engineering, Inc., reserves the right to incorporate and use equipment and
material to conform with the latest
design of its products
and in keeping with the
specifications
o
this equipment
ade in Our NJ Plant
Ten ney
Eng. Inc 1984
